CN214554041U

CN214554041U - Vertical coal mill

Info

Publication number: CN214554041U
Application number: CN202120224206.8U
Authority: CN
Inventors: 蒋猛; 李俊; 韩国栋; 肖良才; 田娟
Original assignee: Zaozhuang Wofeng Cement Co Ltd
Current assignee: Zaozhuang Wofeng Cement Co Ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-11-02
Anticipated expiration: 2031-01-27

Abstract

The utility model discloses a vertical coal pulverizer relates to coal pulverizer technical field. This vertical coal pulverizer, including the base, the top fixed mounting of base has the casing, and the through-hole has all been seted up to the both sides of casing, and the top of base is provided with the mill, and the mill is located the casing, and the mill includes quiet ring, rotating ring, blade and annular steel sheet, and the rotating ring sets up in quiet intra-annular, and the blade is provided with a plurality ofly altogether. This vertical coal pulverizer, weld 60mm of width on quiet ring, the annular steel sheet of thickness 8mm, consolidate on quiet ring with the triangle muscle, and consolidate once more with the coal pulverizer casing with long muscle, cover the movable ring, the clearance of quiet ring department is whole, the wide vent of 60mm remains in movable ring spout department, the vertical distance control is at 15mm about welded annular steel sheet and the movable ring, prevent to produce the friction in the operation, make the coal pulverizer spit the sediment volume significantly reduced, go out the fineness of grinding normal control at 8% -10%, the coal pulverizer vibration resumes the normal value, grinding pressure is carried 11-12 MPa, the coal pulverizer operates stably, the operating mode is fine.

Description

Vertical coal mill

Technical Field

The utility model relates to a coal pulverizer technical field specifically is a vertical coal pulverizer.

Background

The coal mill is a machine for crushing and grinding coal blocks into coal powder, is an important auxiliary device of a coal powder furnace, is an important coal mill, is an ideal large-scale grinding device, and is widely applied to industries such as cement, electric power, metallurgy, chemical industry, non-metal ores and the like. It integrates crushing, drying, grinding and grading conveying into a whole, has high production efficiency, and can grind blocky, granular and powdery raw materials into required powdery materials.

However, in the conventional vertical coal mill, because the yield of the rotary kiln is high, the coal consumption is large, the coal powder bin does not expand, the bin level is kept low for a long time, the machine-hour yield is forced to be improved for keeping the bin level when the rotary kiln encounters coal with poor grindability or the coal mill is abnormally stopped, the slag discharge amount is large, vicious circle is caused, the coal consumption is greatly increased, the labor intensity of field workers is high, the environment is influenced, the upper limit and the lower limit of vibration fluctuation of the coal mill are greatly limited due to the influence of the granularity of raw coal and the fineness of pulverized coal, potential safety hazards exist, meanwhile, the grinding efficiency is reduced due to low grinding pressure and large vibration, the slag discharge amount is large, the fineness of pulverized coal discharged cannot be controlled, after the rotating speed of the powder concentrator is increased, the fine powder in the mill is excessive, the vibration of the coal mill is intensified, the coarse pulverized coal brings great influence to the process operation of the rotary kiln, the pulverized coal is combusted after the kiln head, and the combustion in the decomposing furnace is insufficient, the temperature of the smoke chamber is higher, the crust is more, thick kiln crust is easy to appear at the kiln tail, the ventilation in the kiln is influenced, the yield quality is reduced, and the use requirement of a user cannot be met.

Disclosure of Invention

The utility model provides a vertical coal pulverizer, welding width 60mm on quiet ring, thickness 8 mm's annular steel sheet, consolidate on quiet ring with the triangle muscle, and consolidate once more with the coal pulverizer casing with long muscle, all cover the clearance of sound ring department, the wide vent of 60mm remains in rotating ring spout department, vertical distance control is 15mm about welded annular steel sheet and rotating ring, prevent to produce the friction in the operation, make the coal pulverizer spit the sediment volume significantly reduced, go out fineness of grind normal control at 8% -10%, the coal pulverizer vibration resumes the normal value, grinding pressure carries 11-12 MPa, the coal pulverizer operates stably, the operating mode is fine.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a vertical coal mill comprises a base, wherein a shell is fixedly mounted at the top of the base, through holes are formed in two sides of the shell, a mill disc is arranged at the top of the base and is positioned in the shell, the mill disc comprises a static ring, a dynamic ring, blades and an annular steel plate, the dynamic ring is arranged in the static ring, the blades are arranged in a plurality, the blades are uniformly distributed on the circumferential wall of the dynamic ring, the annular steel plate is fixedly mounted on the inner wall of the static ring and is positioned above the dynamic ring, a supporting block is fixedly mounted on one side of the base, a hydraulic telescopic rod is rotatably arranged at the top of the supporting block, a supporting frame is rotatably arranged at the generating end of the hydraulic telescopic rod, the bottom of the supporting frame is rotatably connected with the top of the base, a fixed seat is fixedly mounted on one side of the supporting frame and is positioned in the through holes, and a grinding roller is arranged on one side of the fixed seat, which is far away from the supporting frame, and the grinding roller is positioned on the top of the grinding disc.

As an optimized scheme of the utility model, the top fixed mounting of annular steel sheet has the triangle muscle, and one side and quiet ring fixed connection of triangle muscle.

As a preferred scheme of the utility model, the top fixed mounting of annular steel sheet has long muscle, and the one end that annular steel sheet was kept away from to long muscle and the inner wall fixed connection of casing.

As an optimized scheme of the utility model, the width of annular steel sheet is 60mm, and the thickness of annular steel sheet is 8 mm.

As an optimized proposal of the utility model, the vertical distance between the annular steel plate and the movable ring is 15 mm.

As an optimal scheme of the utility model, the bottom fixed mounting of base and supporting shoe has the cushion socket.

The utility model provides a vertical coal pulverizer. The method has the following beneficial effects:

this kind of vertical coal pulverizer, weld 60mm of width on quiet ring, the annular steel sheet of thickness 8mm, consolidate on quiet ring with the triangle muscle, and consolidate once more with the coal pulverizer casing with long muscle, cover the clearance of sound ring department all, the wide vent of 60mm remains in rotating ring spout department, the vertical distance control is at 15mm about welded annular steel sheet and rotating ring, prevent to produce the friction in the operation, make the coal pulverizer spit the sediment volume significantly reduced, go out to grind fineness normal control at 8% -10%, the coal pulverizer vibration resumes the normal value, grinding pressure is carried 11-12 MPa, the coal pulverizer operates stably, the operating mode is fine.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the base of the present invention;

FIG. 3 is an enlarged view of the point A in FIG. 2 according to the present invention;

fig. 4 is a top view of the movable ring and the stationary ring of the present invention.

In the figure: 1. a base; 2. a grinding disc; 3. a housing; 4. a support block; 5. a hydraulic telescopic rod; 6. a support frame; 7. a fixed seat; 8. grinding the roller; 9. a shock absorbing seat; 10. a stationary ring; 11. a moving ring; 12. a blade; 13. an annular steel plate; 14. triangular ribs; 15. and (5) long ribs.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a vertical coal mill comprises a base 1, a shell 3 is fixedly installed at the top of the base 1, through holes are formed in two sides of the shell 3, a mill 2 is arranged at the top of the base 1, the mill 2 is located in the shell 3, the mill 2 comprises a static ring 10, a movable ring 11, blades 12 and an annular steel plate 13, the movable ring 11 is arranged in the static ring 10, the blades 12 are arranged in a plurality, the blades 12 are uniformly distributed on the circumferential wall of the movable ring 11, the annular steel plate 13 is fixedly installed on the inner wall of the static ring 10, the annular steel plate 13 is located above the movable ring 11, a supporting block 4 is fixedly installed at one side of the base 1, a hydraulic telescopic rod 5 is rotatably arranged at the top of the supporting block 4, a supporting frame 6 is rotatably arranged at the generating end of the hydraulic telescopic rod 5, the bottom of the supporting frame 6 is rotatably connected with the top of the base 1, a fixing seat 7 is fixedly installed at one side of the supporting frame 6, and the fixing seat 7 is located in the through holes, one side of the fixed seat 7, which is far away from the support frame 6, is provided with a grinding roller 8, and the grinding roller 8 is positioned at the top of the grinding disc 2.

In this embodiment: the annular steel plate 13 covers the gaps at the positions of the movable ring 11 and the static ring 10, a 60mm wide vent hole is left at the position of a spray nozzle of the movable ring 11, according to the traditional technology, the grinding disc 2 is provided with a ventilation ring which is provided with a plurality of ventilation holes, the air heater is arranged at the bottom surface of the grinding disc 2 and is communicated with the lower end surface of the grinding disc 2, so that hot air of the air heater circulates from bottom to top through the ventilation holes to facilitate the drying of materials on the grinding disc 2, a separator is arranged in the shell 3, a discharge hole is arranged at the bottom of the separator, a feed inlet is arranged on the shell 3, on the basis of the traditional technology, the annular steel plate 13 is welded on the static ring 10 to cover the gaps at the positions of the movable ring 11 and the static ring 10, the position of the spray nozzle of the movable ring 11 is left with the 60mm wide vent hole, the vertical distance between the welded annular steel plate 13 and the movable ring 11 is controlled to be 15mm, the friction generated in the operation process is prevented, so that the slag discharging amount of the coal mill is greatly reduced, the grinding fineness is normally controlled to be 8% -10%, the vibration of the coal mill is recovered to a normal value, the grinding pressure is increased to 11-12 MPa, the coal mill operates stably, the working condition is good, the arranged hydraulic telescopic rod 5 is widely used equipment, a user can select a corresponding model according to the use requirement, and the description is omitted.

Specifically, the top of the annular steel plate 13 is fixedly provided with a triangular rib 14, and one side of the triangular rib 14 is fixedly connected with the stationary ring 10.

In this embodiment: so that the annular steel plate 13 can be stably fixed with the stationary ring 10.

Specifically, the top of the annular steel plate 13 is fixedly provided with a long rib 15, and one end of the long rib 15, which is far away from the annular steel plate 13, is fixedly connected with the inner wall of the shell 3.

In this embodiment: the stability of the annular steel plate 13 after fixation is enhanced.

Specifically, the width of the annular steel plate 13 is 60mm, and the thickness of the annular steel plate 13 is 8 mm.

In this embodiment: so that the annular steel plate 13 can meet the use requirement.

Specifically, the vertical distance between the annular steel plate 13 and the movable ring 11 is 15 mm.

In this embodiment: the annular steel plate 13 is prevented from generating friction with the movable ring 11 in operation.

Specifically, the bottom of the base 1 and the supporting block 4 are fixedly provided with a damping seat 9.

In this embodiment: through the shock attenuation seat 9 that sets up, can realize the shock attenuation effect.

When in use, the annular steel plate 13 with the width of 60mm and the thickness of 8mm is welded on the static ring 10, the static ring 10 is reinforced by triangular ribs 14, and is reinforced with the coal mill shell 3 again by long ribs 15, the clearance between the movable ring 11 and the static ring 10 is completely covered, a vent with the width of 60mm is left at the spout of the movable ring 11, the vertical distance between the welded annular steel plate 13 and the movable ring 11 is controlled at 15mm, the friction generated in the operation is prevented, the slag discharging amount of the coal mill is greatly reduced, the grinding fineness is normally controlled at 8% -10%, the vibration of the coal mill is recovered to a normal value, the grinding pressure is increased to 11-12 MPa, the coal mill operates stably, the working condition is good, the control mode of the utility model is controlled by manually starting and closing a switch, the wiring diagram of a power element and the supply of a power supply belong to the common knowledge in the field, and the utility model is mainly used for protecting mechanical devices, the control mode and the wiring arrangement are not explained in detail in the present invention.

In the present application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first feature or the second feature or indirectly contacting the first feature or the second feature through an intermediate.

Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Claims

1. The utility model provides a vertical coal pulverizer, includes base (1), its characterized in that: the grinding disc comprises a base (1), a shell (3) is fixedly mounted at the top of the base (1), through holes are formed in two sides of the shell (3), a grinding disc (2) is arranged at the top of the base (1), the grinding disc (2) is located in the shell (3), the grinding disc (2) comprises a static ring (10), a dynamic ring (11), blades (12) and annular steel plates (13), the dynamic ring (11) is arranged in the static ring (10), the blades (12) are arranged in a plurality, the blades (12) are uniformly distributed on the circumferential wall of the dynamic ring (11), the annular steel plates (13) are fixedly mounted on the inner wall of the static ring (10), the annular steel plates (13) are located above the dynamic ring (11), a supporting block (4) is fixedly mounted on one side of the base (1), a hydraulic telescopic rod (5) is rotatably arranged at the top of the supporting block (4), a supporting frame (6) is rotatably arranged at the generating end of the hydraulic telescopic rod (5), and the bottom of support frame (6) is rotated with the top of base (1) and is connected, one side fixed mounting of support frame (6) has fixing base (7), and fixing base (7) are located the through-hole, one side that support frame (6) were kept away from in fixing base (7) is provided with grinding roller (8), and grinding roller (8) are located the top of mill (2).

2. The vertical coal pulverizer of claim 1, wherein: the top of the annular steel plate (13) is fixedly provided with a triangular rib (14), and one side of the triangular rib (14) is fixedly connected with the stationary ring (10).

3. The vertical coal pulverizer of claim 1, wherein: the top fixed mounting of annular steel sheet (13) has long muscle (15), and the one end that annular steel sheet (13) was kept away from in long muscle (15) and the inner wall fixed connection of casing (3).

4. The vertical coal pulverizer of claim 1, wherein: the width of the annular steel plate (13) is 60mm, and the thickness of the annular steel plate (13) is 8 mm.

5. The vertical coal pulverizer of claim 1, wherein: the vertical distance between the annular steel plate (13) and the movable ring (11) is 15 mm.

6. The vertical coal pulverizer of claim 1, wherein: and the bottom parts of the base (1) and the supporting block (4) are fixedly provided with a damping seat (9).