CN207324979U - A kind of U-shaped liner plate of coal pulverizer - Google Patents
A kind of U-shaped liner plate of coal pulverizer Download PDFInfo
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- CN207324979U CN207324979U CN201721275177.8U CN201721275177U CN207324979U CN 207324979 U CN207324979 U CN 207324979U CN 201721275177 U CN201721275177 U CN 201721275177U CN 207324979 U CN207324979 U CN 207324979U
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Abstract
The utility model discloses a kind of U-shaped liner plate of coal pulverizer, including an arc substrate, arc groove is offered on the intrados of arc substrate, the arc substrate of arc groove both sides forms first raised and the second protrusion respectively, first raised thickness and the thickness of the second protrusion are identical, and the first raised upper surface width is more than the second raised upper surface width.The U-shaped liner plate uses unsymmetric structure, not only reduce the gross weight of U-shaped liner plate, and the first raised wear-out life with the second protrusion can be balanced, it is non-uniform to solve the problems, such as that the U-shaped liner plate both ends wave crest of symmetrical structure is damaged, the grading diameter of abrading-ball can be reduced at the same time, so as to reduce the useful load of abrading-ball, reach energy-saving effect；In addition, raised use arc transition with arc groove, abrading-ball landing is not only contributed to, increase abrading-ball friction rotation area, improves milling efficiency, and enhances the shock resistance of liner plate, improves the parabolic height of abrading-ball.
Description
Technical field
Coal-grinding mechanism pink collar domain is the utility model is related to, more particularly to a kind of U-shaped liner plate of coal pulverizer.
Background technology
Coal-burning power plant mainly uses dual damascene structure with lining plate of coal grinder, but since the corrugation pitch of dual damascene liner plate is small,
Not only by grind materials with trough contact area is smaller, powder point processed is less, milling efficiency is relatively low, but also abrading-ball parabolic height compared with
It is low, impact force is smaller, abrading-ball fall after rise when easily impact wave crest rather than trough, impact of the abrading-ball to wave crest is excessive, can cause dual damascene
The wave crest of liner plate shortens the service life of ball milling by Ball wear.
The dual damascene structure of lining plate of coal grinder is changed to U-shaped symmetrical structure, the crest height of wave at U-shaped liner plate both ends in the prior art
Degree and peak face width all same, after two identical U-shaped liner plate assemblings, although adding corrugation pitch so that by mill thing
The contact area of material and liner plate increases, and abrading-ball directly impacts trough, improves milling efficiency, overcomes above-mentioned dual damascene liner plate institute
There are the defects of, but current U-shaped liner plate still once technical problem：(1) the parabolic height of abrading-ball is still relatively low, powder effect processed
Rate is not high；(2) wave crest peak face is flat face after assembling, and peaks and troughs also connects for wedge angle, is unfavorable for abrading-ball and slides and reduce
The ability of the resistance abrading-ball impact of liner plate；(3) since U-shaped liner plate both sides are symmetrical, determined by the working method of coal pulverizer, U
The degree of wear of type liner plate both sides wave crest is deviated, so as to cause the service life of U-shaped liner plate both sides wave crest asynchronous.
Utility model content
To solve above technical problem, the utility model provides a kind of U-shaped liner plate of coal pulverizer, to solve abrading-ball parabolic height
Deficiency, abrading-ball are not easy to slide at wave crest, milling efficiency is low and liner plate shock resistance is poor, high energy consumption technical problem.
To achieve the above object, the utility model provides following scheme：
The utility model provides a kind of U-shaped liner plate of coal pulverizer, and the U-shaped liner plate includes an arc substrate, the arc base
Offer arc groove on the intrados of plate, it is raised and that the arc substrates of the arc groove both sides forms first respectively
Two is raised, and the described first raised thickness is identical with the thickness of the described second protrusion, and the upper surface width of first protrusion is big
In the described second raised upper surface width.
Optionally, the described first raised upper surface and the second raised upper surface are interior concaved circular cambered surface, and institute
The first raised upper surface is stated with the described second raised upper surface to be located on same arc surface.
Optionally, one end of the arc groove is in smoothing junction by the described in the first arc surface first raised upper surface,
The other end of the arc groove is in smoothing junction by the second arc surface and the described second raised upper surface, first circular arc
The cambered surface in face and the cambered surface of second arc surface are outer convex arc surface.
Optionally, the arc substrate is concave arc substrate, and the circle of the intrados of the arc substrate and extrados
The heart is located on same vertical curve.
Optionally, the described first raised upper surface width is 65mm, and the described second raised upper surface width is 55mm,
Described first raised cambered surface radius is 1898mm；The cambered surface radius of the extrados of the arc substrate is 1975mm.
Optionally, the both ends of the surface in the arc substrate circumferential direction are that inclination is faced directly, and two inclinations are faced directly pair
Claim to set, and two elongated surfaces faced directly that tilt cross above the intrados of the arc substrate, two institutes
It is 10.9 ° to state the angle tilted between facing directly.
Optionally, the parallel spacing between the intrados and the extrados at the arc substrate both ends is
77mm, the most short distance on the arc substrate between the minimum point of the arc groove and the extrados of the arc substrate
It is 334mm from the axial length for 35mm, the arc substrate, the cambered surface chord length of the extrados of the arc substrate is
374mm。
Optionally, each described centre position faced directly that tilts opens up a wedge-shaped impression, the two neighboring U-shaped lining
When plate connects, the described second raised wedge-shaped impression and described the first of another U-shaped liner plate of a U-shaped liner plate
Raised wedge-shaped impression is clamped by convex block.
Optionally, two rectangular channels, the rolling coal cylinder inner wall of coal pulverizer are symmetrically offered on the extrados of the arc substrate
On be provided with the matched protrusion of the rectangular channel, the U-shaped liner plate with it is described rolling coal cylinder inner wall card slot be connected.
Optionally, the U-shaped liner plate is an integral molding structure, and the U-shaped liner plate is the U-shaped liner plate of chrome molybdenum manganese-titanium.
The utility model achieves following technique effect relative to the prior art：
The U-shaped liner plate of coal pulverizer of the utility model, since the first raised upper surface width is more than the second raised upper table
Face width, forms the U-shaped liner plate of unsymmetric structure, not only reduces the gross weight of U-shaped liner plate, and it is raised to balance first
With the second raised wear-out life, solve the U-shaped liner plate both ends wave crest of symmetrical structure causes U due to uneven by Ball wear
Type liner plate both ends wave crest service life nonsynchronous problem；Meanwhile first upper convex surface and the second upper convex surface be indent circle
Cambered surface, the both ends of arc groove pass through outer convex arc surface and first raised and the second raised smooth connection, arc transition respectively again
Abrading-ball landing is not only contributed to, increase abrading-ball friction rotation area, improves milling efficiency, and enhance the impact resistance of liner plate
Can, the smooth connection between circular arc is even more to improve the parabolic height of abrading-ball；And using the unsymmetric structure U of the utility model
Type liner plate, can reduce the grading diameter of abrading-ball, so as to reduce the useful load of abrading-ball, reach energy-saving effect.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, drawings in the following description are only the utility model
Some embodiments, for those of ordinary skill in the art, without having to pay creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the positive dimensional structure diagram of the U-shaped liner plate of the utility model coal pulverizer；
Fig. 2 is the back side dimensional structure diagram of the U-shaped liner plate of the utility model coal pulverizer；
Fig. 3 is the overlooking the structure diagram of the U-shaped liner plate of this Fig. 1 coal pulverizers；
Fig. 4 is the A-A direction structure schematic diagrames of the U-shaped liner plate of this Fig. 3 coal pulverizers.
Description of reference numerals：1st, intrados；11st, arc groove；12nd, first is raised；13rd, second is raised；14th, the first circular arc
Face；15th, the second arc surface；2nd, extrados；3rd, tilt and face directly；4th, wedge-shaped impression；5th, rectangular channel.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained, shall fall within the protection scope of the present invention.
The purpose of this utility model is to provide a kind of U-shaped liner plate of coal pulverizer, with solve abrading-ball parabolic height deficiency, abrading-ball in
It is not easy to slide at wave crest, milling efficiency is low and liner plate shock resistance is poor, high energy consumption technical problem.
Based on this, the utility model provides a kind of U-shaped liner plate of coal pulverizer, and U-shaped liner plate includes an arc substrate, arc substrate
Intrados on offer arc groove, the arc substrates of arc groove both sides forms that first is raised and second is raised respectively, the
One raised thickness and the thickness of the second protrusion are identical, and the upper surface that the first raised upper surface width is more than the second protrusion is wide
Degree.
The U-shaped liner plate of the utility model coal pulverizer, since the first raised upper surface width is more than the second raised upper surface
Width, forms the U-shaped liner plate of unsymmetric structure, not only reduces the gross weight of U-shaped liner plate, and can balance first it is raised with
Second raised wear-out life, solve the U-shaped liner plate both ends wave crest of symmetrical structure causes U-shaped lining due to uneven by Ball wear
Plate both ends wave crest service life nonsynchronous problem；Meanwhile excessively connected by circular arc between raised and arc groove, not only contribute to
Abrading-ball slides, and increase abrading-ball friction rotation area, improves milling efficiency, and enhances the shock resistance of liner plate, improves
The parabolic height of abrading-ball；And the U-shaped liner plate of unsymmetric structure of the utility model is used, the grading diameter of abrading-ball can be reduced, from
And reduce the useful load of abrading-ball, reach energy-saving effect.
To enable the above-mentioned purpose of the utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings and have
Body embodiment is described in further detail the utility model.
Embodiment one：
As shown in figures 1-4, the present embodiment provides a kind of U-shaped liner plate of coal pulverizer, U-shaped liner plate to include an arc substrate, arc
Arc groove 11 is offered on the intrados 1 of substrate, the arc substrate of 11 both sides of arc groove forms the first raised 12 Hes respectively
The thickness of second protrusion 13, the thickness of the first protrusion 12 and the second protrusion 13 is identical, but the upper surface width of the first protrusion 12 is big
In the upper surface width of the second protrusion 13, the U-shaped liner plate of this unsymmetric structure, can not only reduce the gross weight of U-shaped liner plate,
And the first raised wear-out life with the second protrusion can be balanced, the U-shaped liner plate both ends wave crest of symmetrical structure is solved due to by abrading-ball
Wear uneven and cause nonsynchronous problem of U-shaped liner plate both ends wave crest service life.
In this present embodiment, as shown in figure 4, the upper surface of the first protrusion 12 and the upper surface of the second protrusion 13 are indent
Arc surface, and the upper surface of the first protrusion 12 and the upper surface of the second protrusion 13 are located on same arc surface.Meanwhile arc groove
11 one end is in smoothing junction by the upper surface of the first arc surface 14 and the first protrusion 12, and the other end of arc groove 11 then passes through
The upper surface of second arc surface 15 and the second protrusion 13 is in smoothing junction, and the cambered surface of the first arc surface 14 and the second arc surface 15
Cambered surface be outer convex arc surface, excessively connected by circular arc between raised and arc groove, not only contribute to abrading-ball landing, have
Beneficial to increase abrading-ball friction rotation area, milling efficiency is improved, and the shock resistance of liner plate can be strengthened, it is flat between circular arc
Sliding circular sliding slopes are even more the parabolic height for improving abrading-ball.
Further, as shown in Figure 1, arc substrate is concave arc substrate, and the intrados 1 and extrados of arc substrate
2 center of circle is located on same vertical curve, and the vertical curve just divides intrados 1 and extrados 2 equally；Simultaneously because intrados 1
On the first protrusion 12 and the second protrusion 13 upper surface width it is different, straight line where the center of circle of arc groove 11 deviates above-mentioned perpendicular
Straight line, and it is inclined to the second raised 13 side.
Further, the first protrusion 12 and the cambered surface radius of the second raised 13 place arc surfaces are 1898mm, arc base
The cambered surface radius of the extrados 2 of plate is 1975mm, parallel between the intrados 1 and extrados 2 at arc substrate both ends
Away from for 77mm, the beeline on arc substrate between the minimum point of arc groove 11 and the extrados 2 of arc substrate is 35mm,
The axial length of arc substrate is 334mm, and the cambered surface chord length of the extrados 2 of arc substrate is 374mm；And due to intrados 1
Radius size it is larger, the circular arc radian of the upper surface of the first protrusion 12 and the second protrusion 13 is smaller, herein first protrusion 12
Upper surface width is 65mm, and the circular arc chord length for being exactly in fact the first raised 12 upper surfaces is 65mm；Similarly, the second protrusion 13 is upper
Face width, i.e., the circular arc chord length of the second raised 13 upper surfaces is 55mm.
Further, the both ends of the surface in arc substrate circumferential direction are that inclination faces 3 directly, and two inclinations are faced 3 directly and symmetrically set
Put, two tilt and face 3 elongated surfaces directly and cross in the top of the intrados 1 of arc substrate, and intersection line and extrados 2 is above-mentioned
Vertical curve where the center of circle is vertical and intersecting, and two angles tilted between facing directly are 10.9 °, i.e. the radian of extrados 2 is
10.9°。
Further, each inclination faces 3 centre position directly and opens up a wedge-shaped impression 4, and two neighboring U-shaped liner plate connects
When connecing, the wedge-shaped impression 4 of the second protrusion 13 of a U-shaped liner plate and the wedge-shaped impression 4 of the first protrusion 12 of adjacent U-shaped liner plate are logical
Cross convex block clamping.
Further, two rectangular channels 5, the rolling coal cylinder inner wall of coal pulverizer are symmetrically offered on the extrados 2 of arc substrate
On be provided with 5 matched protrusion of rectangular channel, U-shaped liner plate with rolling coal cylinder inner wall card slot be connected.
Further, U-shaped liner plate is an integral molding structure, and U-shaped liner plate is the U-shaped liner plate of chrome molybdenum manganese-titanium.
Operation instruction is made to the U-shaped liner plate of coal pulverizer of the present embodiment below.
In use, U-shaped liner plate is installed along the direction of rotation of coal pulverizer rolling coal cylinder according to coal-grinding mechanism powder principle first,
So that the first protrusion 12 of each U-shaped liner plate is always located in the front end on direction of rotation compared to the second protrusion 13 so that at this
It can impact in the first protrusion 12 when abrading-ball under the influence of rotation direction is pounded partially, even if the first protrusion 12 has been worn, also can more
Since the width of the first protrusion 12 is originally greater than the width of the second protrusion 13, the abrasion of the protrusion 12 of balance first and the second protrusion 13
In the service life, solve symmetrical structure liner plate both ends wave crest is caused the U-shaped liner plate both ends wave crest service life due to uneven by Ball wear
Nonsynchronous problem.Multiple U-shaped liner plates are circumferentially clamped in same circumferential wall on rolling coal cylinder inner wall, it is continuous recessed to form a circle
Groove, it is raised be spaced apart structure, and the U-shaped liner plate of multi-turn is arranged side by side along the axial direction of rolling coal cylinder inner wall；Due to first convex
Play 12 upper surface width to be more than the upper surface width of the second protrusion 13 and form the U-shaped liner plate of unsymmetric structure, not only reduce
The gross weight of U-shaped liner plate, and compared to the loading abrading-ball 55t of dual damascene liner plate, the U-shaped liner plate of unsymmetric structure of the present embodiment
36t only need to be filled, reduces the useful load of abrading-ball, the grading diameter compared to the liner plate grinding ball of symmetrical structure is reduced up to 10%, is saved
Energy effect is fairly obvious.
After installing U-shaped liner plate, proceed by coal-grinding, will treat coal-grinding it is packaged enter horizontal positioned rolling coal cylinder in and drive
Rolling coal cylinder is rotated with setting speed；Roll during coal cylinder rotates, roll the abrading-ball in coal cylinder can due to roll coal cylinder rotation and
Arc transition connection between arc groove 11 and both sides protrusion, is constantly thrown by arc groove 11 and constantly falls into arc
In connected in star 11, the arc transition between the setting of single groove and groove and protrusion has ensured the upthrow height of abrading-ball, and then
The impact force that coal cinder in arc groove 11 is pointed to when abrading-ball is fallen after rise is ensured, abrading-ball impact force can be carried compared to symmetrical structure liner plate
It is high by 12%, be conducive to improve milling efficiency；Moreover, even if abrading-ball is fallen on when falling after rise in the first protrusion 12 or the second protrusion 13,
Can be due to the first protrusion 12 and the circular arc setting of the upper surface of the second protrusion 13 and the first arc surface 14 and the second arc surface 15
Setting, smooth to roll down in adjacent arcing groove 11, the friction that can effectively improve abrading-ball and cambered surface in the process rotates
Area, can strengthen grinding effect of the abrading-ball to coal cinder, and then improve milling efficiency.
It can be seen from the above that the present embodiment is more than the second raised upper surface width, shape due to the first raised upper surface width
Into the U-shaped liner plate of unsymmetric structure, the gross weight of U-shaped liner plate is not only reduced, and can balance that first is raised and second is convex
The wear-out life risen, solve the U-shaped liner plate both ends wave crest of symmetrical structure causes U-shaped liner plate two due to uneven by Ball wear
Hold wave crest service life nonsynchronous problem；Meanwhile first upper convex surface and the second upper convex surface be interior concaved circular cambered surface, arc
The both ends of groove are again raised in smoothing junction with the first protrusion and second by outer convex arc surface respectively, and arc transition not only contributes to
Abrading-ball slides, and increase abrading-ball friction rotation area, improves milling efficiency, and enhance the shock resistance of liner plate, circular arc it
Between smooth connection be even more improve abrading-ball parabolic height；And using the U-shaped liner plate of unsymmetric structure of the utility model, can
The grading diameter of abrading-ball is reduced, so as to reduce the useful load of abrading-ball, reaches energy-saving effect.
It should be noted that the dimensional parameters of each block of U-shaped liner plate in the utility model, include the thickness of arc substrate
Degree, the radian and radius of inner arc radius surface, extrados, it is the radius of arc groove on intrados, first raised and second is raised
Radius of place cambered surface etc., however it is not limited to above-described embodiment, all can be according to actual production demand and rolling coal cylinder specification
Change and adaptive change, to meet changeable production specification and demand demand；Correspondingly, U-shaped liner plate is also not limited to chromium
Molybdenum manganese-titanium is integrally formed, other can realize the alloy of constructed effect；Moreover, mill is required in the utility model
The hardness of ball is higher than the hardness of U-shaped liner plate, easy to impact comminution of the abrading-ball to coal cinder and grinding, therefore, as long as disclosure satisfy that
The abrading-ball of above-mentioned hardness requirement can be used cooperatively with the U-shaped liner plate of the utility model.
Apply specific case in this specification to be set forth the principle and embodiment of the utility model, the above is real
The explanation for applying example is only intended to help the method and its core concept for understanding the utility model；Meanwhile for the general of this area
Technical staff, according to the thought of the utility model, in specific embodiments and applications there will be changes.To sum up institute
State, this specification content should not be construed as the limitation to the utility model.
Claims (10)
- A kind of 1. U-shaped liner plate of coal pulverizer, it is characterised in that the U-shaped liner plate includes an arc substrate, the arc substrate it is interior Offer arc groove in cambered surface, the arc substrates of the arc groove both sides forms that first is raised and second is convex respectively Rise, the described first raised thickness is identical with the thickness of the described second protrusion, and the described first raised upper surface width is more than institute State the second raised upper surface width.
- 2. the U-shaped liner plate of coal pulverizer according to claim 1, it is characterised in that the described first raised upper surface and described Second raised upper surface is interior concaved circular cambered surface, and the described first raised upper surface and the described second raised upper surface position In on same arc surface.
- 3. the U-shaped liner plate of coal pulverizer according to claim 2, it is characterised in that one end of the arc groove passes through first The first raised upper surface is in smoothing junction described in arc surface, and the other end of the arc groove passes through the second arc surface and described the Two raised upper surfaces are in smoothing junction, and the cambered surface of the cambered surface of first arc surface and second arc surface is evagination circular arc Face.
- 4. the U-shaped liner plate of coal pulverizer according to claim 3, it is characterised in that the arc substrate is concave arc substrate, And the intrados of the arc substrate and the center of circle of extrados are located on same vertical curve.
- 5. the U-shaped liner plate of coal pulverizer according to claim 4, it is characterised in that the described first raised upper surface width is 65mm, the described second raised upper surface width is 55mm, and the described first raised cambered surface radius is 1898mm；The arc base The cambered surface radius of the extrados of plate is 1975mm.
- 6. the U-shaped liner plate of coal pulverizer according to claim 5, it is characterised in that two in the arc substrate circumferential direction End face is that inclination is faced directly, and two inclinations are faced directly and are symmetrical arranged, and two elongated surfaces faced directly that tilt are in the arc Cross above the intrados of shape substrate, the angle between two inclinations are faced directly is 10.9 °.
- 7. the U-shaped liner plate of coal pulverizer according to claim 6, it is characterised in that positioned at described in the arc substrate both ends Parallel spacing between intrados and the extrados is 77mm, the minimum point of the arc groove and institute on the arc substrate It is 35mm to state the beeline between the extrados of arc substrate, and the axial length of the arc substrate is 334mm, described The cambered surface chord length of the extrados of arc substrate is 374mm.
- 8. the U-shaped liner plate of coal pulverizer according to claim 7, it is characterised in that the interposition that each described inclination is faced directly Put and open up a wedge-shaped impression, when the two neighboring U-shaped liner plate connects, second protrusion of a U-shaped liner plate Described first raised wedge-shaped impression of wedge-shaped impression and U-shaped liner plate another described is clamped by convex block.
- 9. the U-shaped liner plate of coal pulverizer according to claim 1 or 8, it is characterised in that right on the extrados of the arc substrate Title offers two rectangular channels, is provided with the rolling coal cylinder inner wall of coal pulverizer and the matched protrusion of the rectangular channel, the U-shaped lining Plate is connected with the rolling coal cylinder inner wall card slot.
- 10. the U-shaped liner plate of coal pulverizer according to claim 1 or 8, it is characterised in that the U-shaped liner plate is integrally formed knot Structure, the U-shaped liner plate are the U-shaped liner plate of chrome molybdenum manganese-titanium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721275177.8U CN207324979U (en) | 2017-09-30 | 2017-09-30 | A kind of U-shaped liner plate of coal pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721275177.8U CN207324979U (en) | 2017-09-30 | 2017-09-30 | A kind of U-shaped liner plate of coal pulverizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207324979U true CN207324979U (en) | 2018-05-08 |
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ID=62367622
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721275177.8U Active CN207324979U (en) | 2017-09-30 | 2017-09-30 | A kind of U-shaped liner plate of coal pulverizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207324979U (en) |
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2017
- 2017-09-30 CN CN201721275177.8U patent/CN207324979U/en active Active
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