CN207271355U - A kind of Combined liner structure - Google Patents
A kind of Combined liner structure Download PDFInfo
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- CN207271355U CN207271355U CN201721180319.2U CN201721180319U CN207271355U CN 207271355 U CN207271355 U CN 207271355U CN 201721180319 U CN201721180319 U CN 201721180319U CN 207271355 U CN207271355 U CN 207271355U
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Abstract
Technical solutions of the utility model disclose a kind of Combined liner structure, in low speed coal mill cylinder, including：Some basic liner plates of the cylinder inner surface are disposed axially in along cylinder；Some connecting plate and acoustical absorption heat preserving plates of the arranged for interval between adjacent foundation liner plate；Cover some lifting liner plates of the acoustical absorption heat preserving plate and part adjacent foundation liner plate；Some basic liner plates, some connecting plates, acoustical absorption heat preserving plate and some lifting liner plates are removably attachable in the cylinder.The Combined liner structure that technical solutions of the utility model provide has the advantages that power consumption is low, noise is small, radiation loss is small, liner plate is light-weight and convenient for disassembly and assembly.
Description
Technical field
It the utility model is related to low speed coal mill part technical field, and in particular to the group in a kind of low speed coal mill cylinder
Box-like lining plate structure.
Background technology
Low speed coal mill operation principle is through the bull gear on retarder and pinion gear driving cylinder outer rim, band by main motor
Dynamic cylinder is rotated with the rotating speed of 15~20 circles/minute (r/min), and the quill shaft at cylinder both ends is located in two braking alignings
On babbit metal bearing, bull gear is bolted on shell flange.
A certain number of steel balls (abrasive media) are housed in cylinder, are lifted steel ball to certain by the rotary motion of cylinder
Highly, feed coal is ground into coal dust by steel ball during freely rushing down and leaving.The First air of heat enters in coal-grinding machine drum body,
The coal dust ground is carried while drying material coal and leaves cylinder.Cylinder is by two casting end caps and the cylinder rolled with steel plate
Welding (or being bolted) forms, and the service life is more than 30 years.
It is many to influence the factor of grinding efficiency, one of them important factor is lining plate structure, the surface texture shape of liner plate
Shape directly affects production capacity and liner plate, the consumption of steel ball of coal pulverizer.Existing general 6 years of liner plate projected life, disposably
Replace, after low speed coal mill 3 years ' operation, the corrugated surface of liner plate protrusion is smooth-out, the height of steel ball rising with regard to very limited,
Dribbling ability declines, and increases the opposite slip between steel ball and liner plate, and this low speed coal mill operationally has the disadvantage that：
(1) the unit coal-grinding power consumption of low speed coal mill is higher than other coal pulverizers, coal-grinding power consumption be about 20~28 kilowatt hours/
Ton (kwh/t)；
(2) noise is big, and cylinder external noise is more than 120 decibels；
(3) pulverized coal preparation system makees drier using hot wind, and radiation loss is big, about brings the 6% of total amount of heat into.
Utility model content
The technical problem to be solved is that low speed coal mill unit coal-grinding power consumption is high, noise for technical solutions of the utility model
Greatly, the problem of radiation loss is big, liner plate weight is heavy and dismounting is inconvenient.
In order to solve the above technical problems, technical solutions of the utility model provide a kind of Combined liner structure, for pacifying
In low speed coal mill cylinder, including：
Some basic liner plates of the cylinder inner surface are disposed axially in along cylinder；
Some connecting plate and acoustical absorption heat preserving plates of the arranged for interval between adjacent foundation liner plate；
Cover some lifting liner plates of the acoustical absorption heat preserving plate and part adjacent foundation liner plate；
Some basic liner plates, some connecting plates, acoustical absorption heat preserving plate and some lifting liner plates are detachably connected
In in the cylinder.
Alternatively, the lifting liner plate has protrusion surface, and two corners of the lifting liner plate bottom surface compress phase respectively
Adjacent basis liner plate.
Alternatively, the section of the lifting liner plate is trapezoidal, alternatively, the protrusion surface of the lifting liner plate is arc-shaped.
Alternatively, the Combined liner structure further includes the bolt for connecting the lifting liner plate, connecting plate and cylinder
Component, the bolt assembly include bolt and nut.
Alternatively, there is location hole on the lifting liner plate, connecting plate and cylinder, location hole described in the bolt-through will
The lifting liner plate and connecting plate are fixed on the cylinder.
Alternatively, the acoustical absorption heat preserving plate is sound-absorption and heat-insulation rock-wool heat insulation plate.
Alternatively, the Combined liner structure further includes the damping material for brushing or being bonded in the cylinder inner surface
At least one of material, basis liner plate, connecting plate and the acoustical absorption heat preserving plate is arranged on the damping material.
Alternatively, the thickness of the damping material is less than or equal to 5mm.
Compared with prior art, the technical solution of the utility model has the following advantages：
Combined liner structure includes：Some basic liner plates, the interval of the cylinder inner surface are disposed axially in along cylinder
Some connecting plate and acoustical absorption heat preserving plates acoustical absorption heat preserving plate described with covering being arranged between adjacent foundation liner plate and part are adjacent
Some lifting liner plates of basic liner plate.Wherein, the effect of the acoustical absorption heat preserving plate is it with excellent insulation and sound absorption properties
Can, efficiently solve the problem of radiation loss is big, noise is big；The lifting liner plate can play fixed acoustical absorption heat preserving plate and base
The effect of plinth liner plate.
Some basic liner plates, some connecting plates, acoustical absorption heat preserving plate and some lifting liner plates are detachably connected
In in the cylinder, easy disassembly.
The lifting liner plate has protrusion surface, as section setting set in echelon or by protrusion surface it is in the arc-shaped, both
Raw material can be saved, and the weight of Combined liner structure can be mitigated, two corners of the lifting liner plate compress phase respectively
Adjacent basis liner plate, plays the role of immobilizing foundation liner plate, and in whole wear period, it is constant to lift the corrugated shape of liner plate, ensures
Coal pulverizer has stable output and fineness, reduces the power consumption of coal pulverizer.
There is location hole on the lifting liner plate, connecting plate and cylinder, carried using location hole described in bolt-through by described
Liter liner plate, connecting plate are fixed on the cylinder, and the lifting liner plate at the same time fixes basic liner plate and acoustical absorption heat preserving plate, so
Connecting plate, basic liner plate, acoustical absorption heat preserving plate and lifting liner plate just form a Combined liner structure for being fixed on cylinder together.
The Combined liner structure further includes the damping material for brushing or being bonded in the cylinder inner surface, described
Damping layer is brushed or bonded on the inner surface of low speed coal mill cylinder, can be effectively reduced to come from steel ball and rush down and leave and be hit
Hit the vibration of generation, noise and have effects that heat-insulated, in addition, brushing or bonding damping layer into cylinder, can cause basis
Liner plate can be preferably laid with it.
The thickness of the damping material is less than or equal to 5mm, and thickness is arranged in the range of this, can save cost,
Preferable noise-proofing and heat-insulated effect can be taken into account again.
Therefore, knockdown lining board device provided by the utility model is with power consumption is low, noise is small, radiation loss is small, lining
The advantages of plate is light-weight and convenient for disassembly and assembly.
Brief description of the drawings
Fig. 1 is the structure diagram of the Combined liner structure (not carrying out bolt to fix) of the utility model embodiment；
Fig. 2 is the structure diagram of the Combined liner structure (carrying out bolt to fix) of the utility model embodiment；
Fig. 3 is that the bolt of the utility model embodiment connects the cross-section structure signal in (the A-A directions shown in Fig. 2)
Figure；
Fig. 4 is the non-cross-section structure signal for being bolted position (the B-B directions shown in Fig. 2) of the utility model embodiment
Figure；
Fig. 5 is the structure diagram of the wear-resistant liner of the low speed coal mill cylinder of the utility model embodiment.
Embodiment
Technical solutions of the utility model are described in detail with reference to embodiment.
As shown in Figures 1 and 2, the Combined liner structure of the utility model embodiment, for installed in low speed coal mill
In cylinder, Combined liner structure includes at least：Some basis liner plates 2, some connecting plates 3, acoustical absorption heat preserving plate 4 and lifting liner plate
22。
Some basis liner plates 2 are disposed axially in cylinder inner surface along cylinder.For example, basic liner plate 2 can be strip
Shape, the length of basic liner plate 2 are adapted with barrel lenght, and some basis liner plates 2 axially can be equidistantly arranged in along cylinder
The inner surface of cylinder, the width of basic liner plate 2 customize according to the actual requirements.
4 arranged for interval of some connecting plates 3 and acoustical absorption heat preserving plate is between adjacent foundation liner plate 2.Specifically, adjacent two
Between a basis liner plate 2, compartment of terrain arrangement connecting plate 3 and acoustical absorption heat preserving plate 4, each connecting plate 3 are served as a contrast with two adjacent bases
Plate 2 connects, and each acoustical absorption heat preserving plate 4 also connects with two neighboring basic liner plate 2, each connecting plate 3 and two adjacent sound-absorbings
Thermal insulation board 4 connects, and each acoustical absorption heat preserving plate 4 connects with two adjacent connecting plates 3.The width of connecting plate 3 and acoustical absorption heat preserving plate 4
Be of same size, the length of connecting plate 3 is less than the length of acoustical absorption heat preserving plate 4.Acoustical absorption heat preserving plate 4, which can be selected, has excellent insulation
With the material of sound absorbing capabilities, such as sound-absorption and heat-insulation rock-wool heat insulation plate, there is insulation using the plank made by rock wool material,
Heat loss of the low speed coal mill in operation is greatly reduced, while is also equipped with the effect of sound insulation, effectively reduces cylinder
Outer noise.
Some lifting liner plates 22 cover acoustical absorption heat preserving plate 4 and part adjacent foundation liner plate 2.In the present embodiment, lifting lining
Plate 22 is arranged to, along the axial arranged strip plank of cylinder, in other embodiments, can be configured as some block short slabs, if
It is arranged to the plank of strip, the use of fixing piece can be saved, also allow for dismantling, according to block short slab, it is desirable to is fixed every
A block short slab, then need at least two fixing pieces, so adds the usage amount of fixing piece, if fixing piece selects bolt group
During part, the location hole on plank accordingly increases, so that the possibility of Lou powder is increased, and also in dismounting, workload is larger.
Some basis liner plates 2, some connecting plates 3, some acoustical absorption heat preserving plates 4 and some lifting liner plates 22 are detachably connected
In in cylinder, above-mentioned plank is removably connected, easy to which low speed coal mill cylinder inner structure is installed and dismantled.
In the present embodiment, the dismountable connection mode taken is to be bolted.Specifically, liner plate 22, connecting plate 3 and cylinder are lifted
Going up has location hole, and the bolt in bolt assembly 21 (including bolt and nut) will lift liner plate 22, connecting plate 3 is fixed on cylinder
Body.
In the present embodiment, lifting liner plate 22 is strip, is being bolted position, as shown in figure 3, lifting liner plate 22 covers
Connecting plate 3, and part is covered in the basic liner plate 2 of two adjacent with connecting plate 3；Position is bolted non-, as shown in figure 4,
Lift liner plate 22 to cover on acoustical absorption heat preserving plate 4, and part is covered in the basic liner plate 2 of two adjacent with acoustical absorption heat preserving plate 4.
Lifting liner plate 22 has protrusion surface, and protrusion surface can such as be designed to section in the arc-shaped, or will lifting liner plate 22
Design in echelon in face.The section design for lifting liner plate 22 in echelon, so can not only be saved raw material, but also can mitigate by the present embodiment
The weight of Combined liner device, and two corners for lifting liner plate 22 compress adjacent foundation liner plate 2 respectively, play fixed base
The effect of plinth liner plate 2, it is not necessary to still further set fixing piece to carry out immobilizing foundation liner plate 2.
Further, as shown in Figure 1, the Combined liner structure of the present embodiment further includes brushing or is bonded in cylinder inner surface
Damping material 1.When low speed coal mill is in running, rushing down and leaving cylinder can be made to produce vibration due to steel ball, cylinder exists
Under Long-term Vibration, its service life can be seriously affected, if brushing or bonding one layer of damping material in cylinder, can be good at
To the effect of buffering；When basic liner plate 2 is directly arranged in arc-shaped cylinder, 1~2mm occurs with cylinder in basic liner plate 2
Gap, basic liner plate 2 can not come into full contact with cylinder, if brushing or bonding one layer between basic liner plate 2 and cylinder
Damping material, can effectively improve this problem；Damping material also has antinoise, heat-insulated effect concurrently.In the present embodiment,
Because temperature is at least at 100 DEG C when low speed coal mill is run, thus can select some heat safe materials as damping material
1.Except damping material 1 is brushed or bonded between basic liner plate 2 and cylinder, can also be brushed between connecting plate 3 and cylinder
Or bonding damping material 1, brushed between acoustical absorption heat preserving plate 4 and cylinder or bond damping material 1, so that plate body is abundant with cylinder
Contact, that is to say, that before arrangement combinations formula lining plate structure, damping material 1 can first be arranged in the whole inner surface of cylinder, also may be used
To be selectively arranged at the portion inner surface of cylinder.In other embodiments, damping material can not also be used.
The thickness of damping material is less than or equal to 5mm, and thickness is arranged in the range of this, can save cost and
Take into account preferable noise-proofing and heat-insulated effect.
The Combined liner structure of the utility model is applied in the cylinder of low speed coal mill, as shown in figure 5, in figure
Cylindrical liner plate 6 is the Combined liner structure of the utility model, it has collectively constituted low speed coal mill cylinder with end cap liner plate 5
Wear-resistant liner.
The Combined liner structure of the utility model mainly takes up steel ball using backing surface and hill (protrusion surface),
Material is crushed and is ground, which protects cylinder not frayed, can be replaced in the case where not emptying steel ball
Liner plate is lifted, dismounting is simple and convenient, and in whole wear period, liner plate corrugated shape is constant, ensure that coal pulverizer has stabilization
Contribute and fineness, reduce the power consumption of coal pulverizer, reduce the pollution and harm caused by noise, and the weight of whole liner plate compared with
Gently.
Specific embodiment of the utility model described in detail above, it will be appreciated that those of ordinary skill in the art without
Need creative work according to the present utility model can conceive and make many modifications and variations.Therefore, it is all in the art
Technical staff on the basis of existing technology can by logical analysis, reasoning, or a limited experiment according to the design of the utility model
, all should be in the protection domain being defined in the patent claims with obtained technical solution.
Claims (8)
- A kind of 1. Combined liner structure, in low speed coal mill cylinder, it is characterised in that including：Some basic liner plates of the cylinder inner surface are disposed axially in along cylinder；Some connecting plate and acoustical absorption heat preserving plates of the arranged for interval between adjacent foundation liner plate；Cover some lifting liner plates of the acoustical absorption heat preserving plate and part adjacent foundation liner plate；Some basic liner plates, some connecting plates, acoustical absorption heat preserving plate and some lifting liner plates are removably attachable to institute State in cylinder.
- 2. Combined liner structure according to claim 1, it is characterised in that the lifting liner plate has protrusion surface, Two corners of the lifting liner plate bottom surface compress adjacent foundation liner plate respectively.
- 3. Combined liner structure according to claim 2, it is characterised in that the section of the lifting liner plate is trapezoidal, Alternatively, the protrusion surface of the lifting liner plate is arc-shaped.
- 4. Combined liner structure according to claim 1, it is characterised in that further include the connection lifting liner plate, connect The bolt assembly of fishplate bar and cylinder, the bolt assembly include bolt and nut.
- 5. Combined liner structure according to claim 4, it is characterised in that lifting liner plate, connecting plate and the cylinder Upper to have location hole, the lifting liner plate and connecting plate are fixed on the cylinder by location hole described in the bolt-through.
- 6. Combined liner structure according to claim 1, it is characterised in that the acoustical absorption heat preserving plate is sound-absorption and heat-insulation rock Cotton thermal insulation board.
- 7. Combined liner structure according to any one of claims 1 to 6, it is characterised in that further include brushing or bonding In the damping material of the cylinder inner surface, at least one of basis liner plate, connecting plate and the acoustical absorption heat preserving plate are arranged in institute State on damping material.
- 8. Combined liner structure according to claim 7, it is characterised in that the thickness of the damping material is less than or waits In 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721180319.2U CN207271355U (en) | 2017-09-14 | 2017-09-14 | A kind of Combined liner structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721180319.2U CN207271355U (en) | 2017-09-14 | 2017-09-14 | A kind of Combined liner structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207271355U true CN207271355U (en) | 2018-04-27 |
Family
ID=61989324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721180319.2U Active CN207271355U (en) | 2017-09-14 | 2017-09-14 | A kind of Combined liner structure |
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| Country | Link |
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| CN (1) | CN207271355U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112090549A (en) * | 2020-07-22 | 2020-12-18 | 神华国能集团有限公司 | Coal mill |
| CN114042511A (en) * | 2021-11-10 | 2022-02-15 | 攀枝花贝氏体耐磨管道有限公司 | Composite damping structure mill barrel |
-
2017
- 2017-09-14 CN CN201721180319.2U patent/CN207271355U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112090549A (en) * | 2020-07-22 | 2020-12-18 | 神华国能集团有限公司 | Coal mill |
| CN114042511A (en) * | 2021-11-10 | 2022-02-15 | 攀枝花贝氏体耐磨管道有限公司 | Composite damping structure mill barrel |
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