CN219043363U - Air inlet mechanism of vertical roller mill - Google Patents

Abstract

The application relates to the technical field of vertical roller mill, and discloses a vertical roller mill air inlet mechanism, including selection powder machine shell body, row feed cylinder and rotor body, the top of row feed cylinder welds with the interior bottom wall of selection powder machine shell body, and the rotor body sets up the inside at selection powder machine shell body, and the air intake has all been seted up on the top of row feed cylinder both sides. According to the scheme, the deflection angle, the gap of the wind guide blades, the number and the size of the rotor blades and the like are uniquely designed and installed, so that steel slag coarse powder moves to a low wind speed area through a high wind speed area among a plurality of wind guide blades and then falls down along the inner wall of the discharge barrel, and steel slag fine powder is sucked into the top of the inside of the discharge barrel through a high wind speed area among a plurality of wind guide blades, a low wind speed area and gaps among a plurality of rotor blades in sequence and finally discharged, and further, the efficient powder selection and flexible product fineness regulation of the powder selecting machine are realized.

Description

Air inlet mechanism of vertical roller mill

Technical Field

The application relates to the technical field of vertical roller grinders, in particular to an air inlet mechanism of a vertical roller grinder.

Background

The vertical roller mill belongs to the third generation powder concentrator, when in work; the method is characterized in that the ground steel slag fine powder through grinding discs and grinding rollers is sucked into a powder concentrator under the wind power generated by high-speed rotation of a rotor body in a vertical roller mill, the gravity classification (the region is an auxiliary classification region) is firstly carried out on the particle flow in a complex annular region formed by a powder concentrator guide blade, a powder concentrator shell, a coarse grain material collecting cone and the grinding bodies, then the particle flow enters into a concentric annular region formed by the outer edges of the rotor blades and the inner edges of the guide blades for centrifugal classification (the region is a main classification region), the steel slag coarse powder is centrifugally thrown out of the annular region by the rotor body and falls to the grinding discs along the inner sides of the guide blades for re-grinding, the product particles are discharged out of the mill through a rotor, the rotor blades and the wind guiding blades in the powder concentrator are arranged in the air inlet in a fan shape and are small in number, so that the wind power is identical when flowing through between the two wind guiding blades and the two rotor blades, and the high wind speed region and the low wind speed region are not formed, the steel slag coarse powder and the fine powder are sucked into the powder concentrator together, and the steel slag coarse powder is separated from the coarse powder by the centrifugal force of the rotor body, and the coarse powder is separated by the centrifugal force of the rotor body, so that the steel slag coarse powder and the coarse powder cannot be flexibly regulated and the fine powder cannot be separated after the fine powder is separated, and the fine powder is very low in work, and the fineness can not be regulated.

Disclosure of Invention

In order to solve the problem, the application provides an air inlet mechanism of a vertical roller mill.

The application provides a vertical roller mill air inlet mechanism adopts following technical scheme:

the air inlet mechanism of the vertical roller mill comprises a powder concentrator outer shell, a discharge cylinder and a rotor body, wherein the top end of the discharge cylinder is welded with the inner bottom wall of the powder concentrator outer shell;

a plurality of rotor blades are welded at one end of the bottom of each of the two fan-shaped plates, the intervals between every two rotor blades welded at one end of the bottom of each of the two fan-shaped plates are the same, and the thicknesses of the rotor blades welded at one end of the bottom of each of the two fan-shaped plates are the same;

the other ends of the bottom of the fan-shaped plates are welded with a plurality of air guide blades, the intervals between every two of the plurality of air guide blades welded at the other ends of the bottom of the fan-shaped plates are the same, and the inclination angles of the plurality of air guide blades welded at the other ends of the bottom of the fan-shaped plates are consistent.

Through adopting above-mentioned technical scheme, through a plurality of rotor blade and a plurality of wind-guiding blade cooperation in two air intakes, the slag coarse powder moves to low wind speed district through the high wind speed district between a plurality of wind-guiding blade and then falls along row feed cylinder inner wall, and the slag fine powder then is inhaled to row feed cylinder inner top and is discharged at last through the clearance between a plurality of wind-guiding blade in high wind speed district, low wind speed district and a plurality of rotor blade in proper order, through carrying out unique design and installation to the offset angle, clearance and rotor blade's of wind-guiding blade quantity, size etc. and then realize the nimble regulation and control of the high-efficient selection powder and the product fineness of selection powder machine.

Preferably, the rotor blades and the wind guiding blades in the two wind inlets are respectively staggered one by one.

Through adopting above-mentioned technical scheme, with a plurality of rotor blade and a plurality of wind-guiding blade in two air intakes respectively dislocation distribution one by one, can form a plurality of air flow channels like this, and then can shunt the slag powder.

Preferably, the plurality of rotor blades and the plurality of wind guiding blades are made of ferrous metal, and paint is sprayed on the outer surfaces of the plurality of rotor blades and the plurality of wind guiding blades.

Through adopting above-mentioned technical scheme, a plurality of rotor blade and a plurality of wind-guiding blade that are made by ferrous metal, hardness is high, can not damage easily after long-time use, and has paint spraying on its surface can promote its rust resistance.

Preferably, a stainless steel thin layer is welded on the inner wall of the discharge cylinder.

By adopting the technical scheme, the stainless steel thin layer has smooth surface, is easy for coarse slag to fall down by self gravity, and cannot be attached to the inner wall of the discharge cylinder.

In summary, the present application includes the following beneficial technical effects:

through being equipped with the sector plate, all weld a plurality of rotor blade in the one end of two sector plate bottoms, all weld a plurality of wind-guiding blade in the other end of two sector plate bottoms, through carrying out unique design and installation to the offset angle, clearance and rotor blade's quantity, size etc. of wind-guiding blade for the slag coarse powder moves to low wind speed district and then falls along the inner wall of the row feed cylinder through the high wind speed district between a plurality of wind-guiding blade, and the slag fine powder then is inhaled to the row feed cylinder through the high wind speed district between a plurality of wind-guiding blade, low wind speed district and the clearance between a plurality of rotor blade and is discharged at last, and then realizes the nimble regulation and control of the high-efficient selection powder and the product fineness of selection powder machine.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the application embodiment.

Fig. 2 is an enlarged schematic view of the structure at a in fig. 1 of the application embodiment.

FIG. 3 is a schematic view of a combination of rotor blades, wind-guiding blades and sector plates in an embodiment of the application.

Fig. 4 is a schematic view showing the bottom view of the inside of the outer casing of the powder concentrator in the application example.

Reference numerals illustrate: 1. a powder concentrator outer shell; 2. a discharge cylinder; 3. a rotor body; 4. an air inlet; 5. a sector plate; 6. a bolt; 7. a rotor blade; 8. and the wind guide blade.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses an air inlet mechanism of a vertical roller mill. Referring to fig. 1 and 2, an air inlet mechanism of a vertical roller mill comprises a powder selecting machine outer shell 1, a discharging barrel 2 and a rotor body 3, wherein the top end of the discharging barrel 2 is welded with the inner bottom wall of the powder selecting machine outer shell 1, the powder selecting machine outer shell 1 is used for fixing the discharging barrel 2, the discharging barrel 2 can discharge steel slag coarse powder into a grinding disc at the bottom of the powder selecting machine outer shell, the rotor body 3 is arranged in the powder selecting machine outer shell 1, air inlets 4 are formed in the top ends of two sides of the discharging barrel 2, wind power generated by high-speed rotation of the rotor body 3 can suck the steel slag powder into the discharging barrel 2 through the two air inlets 4 for powder selecting, fan-shaped plates 5 are arranged at the inner top parts of the two air inlets 4, three bolts 6 penetrate through the bottom threads of the two fan-shaped plates 5, and the three bolts 6 are in threaded connection with the powder selecting machine outer shell 1, so that the two fan-shaped plates 5 can be fixed in the two air inlets 4;

referring to fig. 3 and 4, a plurality of rotor blades 7 are welded at one end of the bottoms of the two sector plates 5, the intervals between the rotor blades 7 welded at one end of the bottoms of the two sector plates 5 are the same, and the thicknesses of the rotor blades 7 welded at one end of the bottoms of the two sector plates 5 are the same; the other ends of the bottoms of the two fan-shaped plates 5 are welded with a plurality of wind guide blades 8, the intervals between every two of the plurality of wind guide blades 8 welded with the other ends of the bottoms of the two fan-shaped plates 5 are the same, the inclination angles of the plurality of wind guide blades 8 welded with the other ends of the bottoms of the two fan-shaped plates 5 are identical, the plurality of rotor blades 7 in the two air inlets 4 are matched with the plurality of wind guide blades 8, steel slag coarse powder moves to a low wind speed area through a high wind speed area among the plurality of wind guide blades 8 and then falls along the inner wall of the discharge cylinder 2, and steel slag fine powder is sucked into the millstone at the bottom of the discharge cylinder 2 through the high wind speed area among the plurality of wind guide blades 8, the low wind speed area and gaps among the plurality of rotor blades 7 in sequence.

Referring to fig. 4, a plurality of rotor blades 7 and a plurality of wind guiding blades 8 in two air inlets 4 are respectively staggered one by one, so that a plurality of wind flowing channels can be formed, and then a plurality of wind can be formed, and steel slag powder can be sucked into the discharge cylinder 2 in a stranding manner.

Referring to fig. 3, the plurality of rotor blades 7 and the plurality of wind guiding blades 8 are made of iron metal, so that the hardness is high, the wind guiding blades cannot be easily damaged after long-time use, and the outer surfaces of the plurality of rotor blades 7 and the outer surfaces of the plurality of wind guiding blades 8 are sprayed with paint, so that the rust resistance of the wind guiding blades can be improved.

Referring to fig. 1, a stainless steel thin layer is welded on the inner wall of the discharge cylinder 2, the surface of the stainless steel thin layer is smooth, coarse slag is easy to fall down by self gravity, and the coarse slag cannot adhere to the inner wall of the discharge cylinder 2.

The implementation principle of the air inlet mechanism of the vertical roller mill provided by the embodiment of the application is as follows: when the wind power generation device works, steel slag powder can be sucked into the discharge cylinder 2 through the two air inlets 4 by wind power generated by high-speed rotation of the rotor body 3, in the process, the plurality of rotor blades 7 in the two air inlets 4 are matched with the plurality of wind guide blades 8, steel slag coarse powder moves to a low wind speed area through a high wind speed area among the plurality of wind guide blades 8 and then falls into a millstone at the bottom of the discharge cylinder 2 along the inner wall of the discharge cylinder 2, and steel slag fine powder is sucked into the inner top of the discharge cylinder 2 through a high wind speed area among the plurality of wind guide blades 8, a low wind speed area and gaps among the plurality of rotor blades 7 in sequence and finally discharged.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides a vertical roller mill air inlet mechanism, includes selection powder machine shell body (1), arranges feed cylinder (2) and rotor body (3), its characterized in that, the top of arranging feed cylinder (2) is welded with the interior bottom wall of selection powder machine shell body (1), rotor body (3) set up the inside at selection powder machine shell body (1), air intake (4) have all been seted up on the top of arranging feed cylinder (2) both sides, two air intake (4) interior top all is provided with sector plate (5), two the bottom screw thread of sector plate (5) has run through three bolt (6), three bolt (6) all with selection powder machine shell body (1) threaded connection;

a plurality of rotor blades (7) are welded at one end of the bottoms of the two fan-shaped plates (5), the intervals between every two rotor blades (7) welded at one end of the bottoms of the two fan-shaped plates (5) are the same, and the thicknesses of the rotor blades (7) welded at one end of the bottoms of the two fan-shaped plates (5) are the same;

the other ends of the bottoms of the fan-shaped plates (5) are welded with a plurality of air guide blades (8), the intervals between every two of the air guide blades (8) welded at the other ends of the bottoms of the fan-shaped plates (5) are the same, and the inclination angles of the air guide blades (8) welded at the other ends of the bottoms of the fan-shaped plates (5) are consistent.

2. The air intake mechanism of claim 1, wherein: the rotor blades (7) and the wind guide blades (8) in the two air inlets (4) are respectively staggered one by one.

3. The air intake mechanism of claim 1, wherein: the rotor blades (7) and the wind guide blades (8) are made of iron metal, and paint is sprayed on the outer surfaces of the rotor blades (7) and the wind guide blades (8).

4. The air intake mechanism of claim 1, wherein: the inner wall of the discharge cylinder (2) is welded with a stainless steel thin layer.

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