CN210994583U - Novel lining plate of vertical coal mill - Google Patents
Novel lining plate of vertical coal mill Download PDFInfo
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- CN210994583U CN210994583U CN201921807552.8U CN201921807552U CN210994583U CN 210994583 U CN210994583 U CN 210994583U CN 201921807552 U CN201921807552 U CN 201921807552U CN 210994583 U CN210994583 U CN 210994583U
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Abstract
The utility model relates to a novel lining plate of a vertical coal mill, which comprises a lining plate base body and a metal ceramic composite plate; one large surface of the liner plate base body is provided with a positioning bulge, one side of the positioning bulge is provided with a connecting screw hole, the other large surface of the liner plate base body is provided with a positioning key connected with the mill, and the positioning key is provided with an installation screw hole; the mounting surfaces of the metal ceramic composite plate and the lining plate base body are provided with positioning grooves which can be matched with the positioning bulges, and the metal ceramic composite plate is also provided with countersunk through holes corresponding to the connecting screw holes. The metal ceramic composite plate is detachably mounted on the grinding contact surface of the lining plate of the coal mill, has impact resistance and abrasion resistance, and is mounted and fastened by adopting bolts, so that the abrasion resistance of the lining plate is improved, and the mounting and dismounting are facilitated; and the damping cushion block is arranged on the mounting surface of the lining plate and the grinding machine, so that the rigid impact force between the lining plate and the grinding bowl can be effectively prevented, the service life of the lining plate is greatly prolonged, and the vibration noise of the grinding machine is reduced.
Description
Technical Field
The utility model relates to a coal grinding technical field, concretely relates to can promote novel welt of vertical coal pulverizer of coal grinding efficiency installation of being convenient for.
Background
The coal mill is the main equipment of the coal powder preparation system of the thermal power plant, realizes the grinding and crushing of coal blocks through three modes of crushing, smashing and grinding, is also applied to the powder preparation system of the cement industry, the metallurgical industry, the chemical industry and the sugar industry, and can adapt to the grinding and powder preparation of coal with various hardness.
Coal mills can be classified into low-speed coal mills, medium-speed coal mills and high-speed coal mills according to the operating speed; the common features of medium-speed coal mills (i.e. vertical coal mills) are that the grinding part is composed of two sets of grinding bodies moving relatively, the coal block is crushed between the two sets of grinding bodies by squeezing and grinding, and the hot air introduced into the coal mill dries the coal and sends the coal powder to the separator at the upper part of the grinding area, and the separated coal powder with a certain particle size is carried out of the mill along with the air flow. The lining plate of the coal mill is mainly used for protecting a barrel body of the coal mill, so that the barrel body is prevented from being directly impacted and abraded by a grinding body and materials. Therefore, the lining plate needs to be replaced periodically in the coal grinding process so as to protect the grinding machine and ensure the coal grinding quality and efficiency.
The existing lining plate is found that the contact surface of the lining plate and a grinding roller is not high in wear resistance when in use, the lining plate needs to be frequently replaced, installation and fixation are complex, replacement is time-consuming, and meanwhile, the lining plate and the grinding machine are rigidly installed without a damping function.
SUMMERY OF THE UTILITY MODEL
To the problem mentioned above, the utility model provides an improve wearability and be liable to change to have the novel welt of vertical coal pulverizer of shock attenuation effect.
The utility model discloses a concrete technical scheme is:
a novel lining plate of a vertical coal mill comprises a lining plate base body and a metal ceramic composite plate; a positioning bulge is arranged on one large surface of the liner plate base body, a connecting screw hole is formed beside the positioning bulge, a positioning key connected with a mill is arranged on the other large surface of the liner plate base body, and an installation screw hole is formed in the positioning key; and the mounting surfaces of the metal ceramic composite plate and the lining plate base body are provided with positioning grooves which can be matched with the positioning bulges, and the metal ceramic composite plate is also provided with countersunk through holes corresponding to the connecting screw holes.
Further, preferably, still include the shock attenuation backing plate, the shock attenuation backing plate is installed to the navigation key both sides of welt base member.
Further, it is preferable that the lining plate base body is provided with a positioning protrusion, and a positioning column is further arranged on one side of the lining plate base body, and a positioning column hole is formed in the metal ceramic composite plate corresponding to the positioning column.
Further, preferably, the liner plate base body and the installation surface of the shock absorption base plate are also provided with shock absorption installation blocks, and shock absorption installation block grooves are formed in the shock absorption base plate corresponding to the shock absorption installation blocks.
The utility model has the advantages that: the metal ceramic composite plate is detachably mounted on the grinding contact surface of the lining plate of the coal mill, has impact resistance and abrasion resistance, has the service life 2-3 times that of a common metal lining plate, can effectively prolong the service life of the utility model, adopts a bolt mounting and fastening mode, can realize the replacement of the metal ceramic composite plate by loosening the bolt after the metal ceramic composite plate is worn or damaged, does not need to be integrally replaced, improves the abrasion resistance of the lining plate, and is convenient to mount and dismount; and the damping cushion block is arranged on the mounting surface of the lining plate and the grinding machine, so that the rigid impact force between the lining plate and the grinding bowl can be effectively prevented, the service life of the lining plate is greatly prolonged, and the vibration noise of the grinding machine is reduced.
Drawings
Fig. 1 is the side view of the utility model discloses a during assembly of welt base member, cermet composite sheet and shock attenuation backing plate of novel welt of vertical coal pulverizer.
Fig. 2 is a front view plan view of the lining base body of the present invention.
Fig. 3 is a left side view of the lining base body of the present invention, in which a partial section view of the connection screw hole is shown.
Fig. 4 is a top view of the liner substrate of the present invention.
Fig. 5 is a rear view of the liner substrate of the present invention.
Fig. 6 is a front view of the metal ceramic composite plate of the present invention.
Fig. 7 is a stepped cross-sectional view of a-a of fig. 6.
Fig. 8 is a front view of the shock absorbing pad of the present invention.
Figure 9 is a half-sectional view of the shock absorbing pad of the present invention.
In the upper diagram: 1-a lining plate matrix, 2-a metal ceramic composite plate, 3-a damping cushion plate and 4-a flat head bolt;
101-positioning protrusion, 102-connecting screw hole, 103-positioning key, 104-mounting screw hole, 105-shock-absorbing mounting block and 106-positioning column;
201-a positioning groove, 202-a countersunk through hole and 203-a positioning column hole;
301-shock absorbing mounting block slot.
Detailed Description
In order to make the technical problems and technical solutions solved by the present invention more clearly understood, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1 to 7, the novel lining plate for the vertical coal mill comprises a lining plate base body 1 and a metal ceramic composite plate 2, wherein the metal ceramic composite plate 2 is installed on the lining plate base body 1 through a flat head bolt 4.
The welt base member 1 adopts ordinary steel preparation to form, and it has avoided traditional welt monoblock to use the drawback of special wear-resisting material steel, and 1 big face of welt base member is provided with location arch 101, and sphere arc design is chooseed for use to protruding 101 in the location, makes things convenient for metal ceramic composite panel 2 can fix a position fast with welt base member 1, also can bear great tangential force simultaneously.
The side of the positioning bulge 101 is provided with a connecting screw hole 102, the connecting screw hole 102 is a blind hole, meanwhile, a positioning groove 201 which can be matched with the positioning bulge 101 is arranged on the mounting surface of the metal ceramic composite plate 2 and the lining plate base body 1, the metal ceramic composite plate 2 is provided with a countersunk through hole 202 corresponding to the connecting screw hole 102, the flat-head bolt 4 penetrates through the countersunk through hole 202 and is in threaded connection with the connecting screw hole 102 of the lining plate base body 1, meanwhile, in order to prevent the nut of the flat-head bolt 4 from being worn, the countersunk depth of the countersunk through hole 202 is slightly larger than the nut thickness of the flat-head bolt 4, the nut surface of the flat-head bolt 4 is slightly lower than the surface of the metal ceramic composite plate 2 after being mounted, the flat-head bolt 4 is preferably.
The metal ceramic composite board 2 has the shock resistance and the abrasion resistance simultaneously, and the service life of the metal ceramic composite board is 2-3 times that of a common metal lining board, so that the service life of the utility model can be effectively prolonged.
The lining plate base body 1 is provided with the protruding 101 one side in location and still is provided with reference column 106, and it has location post hole 203 to open on metal ceramic composite sheet 2 to correspond reference column 106, adds in lining plate base body 1 and metal ceramic composite sheet 2 and establishes reference column 106 and location post hole 203 and can bear the great tangential force that the grinding roller brought in order to guarantee connection between them, and the quick installation of the crew cut bolt 4 of being convenient for is dismantled simultaneously.
As shown in fig. 1 and 3 to 5, the other large surface of the lining plate base body 1 is provided with a positioning key 103 connected with a grinding machine, the positioning key 103 is provided with an installation screw hole 104, and two sides of the positioning key 103 of the lining plate base body 1 are provided with the shock absorption backing plate 3; the damping cushion plate 3 is made of materials with damping performance, such as rubber, PVC organic matters and the like. After the lining plate base body 1 is installed with a grinding bowl of a grinding machine through the installation screw holes 104 on the positioning key 103 by bolts, the shock absorption base plates 3 on two sides of the positioning key 103 are clamped and fixed by the lining plate base body 1 and the grinding bowl of the grinding machine, so that the thickness of the shock absorption base plates 3 is slightly larger than that of the positioning key 103, and the thickness of the shock absorption base plates 3 is preferably larger than 1-2 mm. The damping base plate 3 with the damping function is additionally arranged between the lining plate base body 1 and the mill, so that the rigid impact force of the grinding roller on the lining plate and the mill body is reduced.
As shown in fig. 8 to 9, in order to prevent the shock absorbing pad plate 3 from loosening or even displacing from the space between the liner plate base body 1 and the grinding bowl of the grinding mill during the grinding and impacting of the grinding roll on the liner plate, a shock absorbing mounting block 105 is further arranged on the liner plate base body 1 on the surface where the shock absorbing pad plate 3 is mounted, a shock absorbing mounting block groove 301 is arranged on the shock absorbing pad plate 3 corresponding to the shock absorbing mounting block 105, and the effect of positioning and preventing movement is achieved by adopting concave-convex fit.
The metal ceramic composite plate is detachably mounted on the grinding contact surface of the lining plate of the coal mill, has impact resistance and abrasion resistance, has the service life 2-3 times that of a common metal lining plate, can effectively prolong the service life of the utility model, adopts a bolt mounting and fastening mode, can realize the replacement of the metal ceramic composite plate by loosening the bolt after the metal ceramic composite plate is worn or damaged, does not need to be integrally replaced, provides the abrasion resistance of the lining plate, and is convenient to mount and dismount; and the damping cushion block is arranged on the mounting surface of the lining plate and the grinding machine, so that the rigid impact force between the lining plate and the grinding bowl can be effectively prevented, the service life of the lining plate is greatly prolonged, and the vibration noise of the grinding machine is reduced.
The present invention has been described in detail with reference to the specific and preferred embodiments, but it should be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and any modifications, equivalents and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (4)
1. The novel lining plate for the vertical coal mill is characterized by comprising a lining plate base body (1) and a metal ceramic composite plate (2), wherein a large surface of the lining plate base body (1) is provided with a positioning bulge (101), one side of the positioning bulge (101) is provided with a connecting screw hole (102), the other large surface of the lining plate base body (1) is provided with a positioning key (103) connected with the mill, and the positioning key (103) is provided with an installation screw hole (104); and positioning grooves (201) which can be matched with the positioning bulges (101) are formed in the mounting surfaces of the metal ceramic composite plate (2) and the lining plate base body (1), and countersunk through holes (202) are formed in the corresponding connecting screw holes (102) of the metal ceramic composite plate (2).
2. The novel liner plate of the vertical coal mill as claimed in claim 1, wherein: still include shock attenuation backing plate (3), shock attenuation backing plate (3) are installed to the navigation key (103) both sides of welt base member (1).
3. The novel liner plate of the vertical coal mill as claimed in claim 1 or 2, wherein: the lining plate is characterized in that a positioning column (106) is further arranged on one side, provided with a positioning protrusion (101), of the lining plate base body (1), and a positioning column hole (203) is formed in the metal ceramic composite plate (2) corresponding to the positioning column (106).
4. The novel liner plate of the vertical coal mill as claimed in claim 2, wherein: the damping mounting block is characterized in that a damping mounting block (105) is further arranged on the mounting surface of the lining plate base body (1) and the damping base plate (3), and a damping mounting block groove (301) is formed in the damping base plate (3) corresponding to the damping mounting block (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921807552.8U CN210994583U (en) | 2019-10-25 | 2019-10-25 | Novel lining plate of vertical coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921807552.8U CN210994583U (en) | 2019-10-25 | 2019-10-25 | Novel lining plate of vertical coal mill |
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| Publication Number | Publication Date |
|---|---|
| CN210994583U true CN210994583U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921807552.8U Active CN210994583U (en) | 2019-10-25 | 2019-10-25 | Novel lining plate of vertical coal mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113003467A (en) * | 2021-04-10 | 2021-06-22 | 南京工程学院 | Hydraulic control device and method for mounting rubber-plastic spring damping device of large coal mill |
-
2019
- 2019-10-25 CN CN201921807552.8U patent/CN210994583U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113003467A (en) * | 2021-04-10 | 2021-06-22 | 南京工程学院 | Hydraulic control device and method for mounting rubber-plastic spring damping device of large coal mill |
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