CN215694764U - Rotary nozzle ring - Google Patents
Rotary nozzle ring Download PDFInfo
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- CN215694764U CN215694764U CN202121580670.7U CN202121580670U CN215694764U CN 215694764 U CN215694764 U CN 215694764U CN 202121580670 U CN202121580670 U CN 202121580670U CN 215694764 U CN215694764 U CN 215694764U
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Abstract
The utility model discloses a rotary nozzle ring, which relates to a powder pulverizing and crushing equipment technology and comprises a middle frame body, wherein a grinding disc is arranged in the middle frame body, a flange is arranged at the top of the grinding disc, a flat plate is arranged at the top of the flange, a peripheral plate is arranged at the edge of the bottom of the flat plate, an inner wall plate is arranged at the bottom of the flat plate, a plurality of blades distributed at equal intervals are arranged on the peripheral plate and the inner wall plate, an included angle alpha between each blade and a horizontal plane is seen from the center of a ring body in a ring-shaped cavity which is formed by the inner wall plate, the peripheral plate and the flat plate and is narrow at the top and wide at the bottom, and the included angle alpha ranges from thirty-five degrees to seventy-five degrees. The thickness of the vanes is gradually increased from the top to the bottom in a trapezoidal change manner, so that the service life of the vanes can be prolonged by more than one time, the overhauling and maintenance cost of a nozzle ring of a user is reduced, and unnecessary shutdown of the coal mill caused by replacing the nozzle ring is reduced; meanwhile, the time of hot air passing through the nozzle ring is shortened, the ventilation efficiency of the nozzle ring is improved, and the output of the coal mill is favorably improved.
Description
Technical Field
The utility model relates to a powder making and crushing equipment technology, in particular to a rotary nozzle ring.
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 and comprises a vertical mill, a high-pressure suspension roller mill, a medium-speed micro-mill, an overpressure trapezoid mill, a Raymond mill and the like, wherein the coal grinding process is a process of crushing coal and increasing the surface area of the coal, and the binding force among solid molecules must be overcome to increase a new surface area, therefore, energy is consumed, coal is ground into coal powder in a coal mill mainly by three modes of crushing, crushing and grinding, wherein the energy consumed in the crushing process is the least, the energy consumed in the grinding process is the most, and various coal mills have the two or three modes in the pulverizing process, however, the type of the coal mill depends on the type of the coal mill, and the types of the coal mill are various, and can be classified into three types, i.e., a low-speed coal mill, a medium-speed coal mill, and a high-speed coal mill, depending on the rotational speed of the coal grinding operation member.
In prior art, the thickness of the movable nozzle ring blade of the medium speed coal mill is the same, when the actual coal quality selected by a user is larger than the designed coal quality, the ventilation volume of the coal mill is changed greatly, so that the wind speed of the nozzle ring deviates from the designed value, the abrasion of the nozzle ring blade is increased, and the whole service life of the nozzle ring is shortened. When the nozzle ring is replaced by shutdown maintenance, the old movable nozzle ring and the new movable nozzle ring are assembled by cutting the static nozzle ring, so that the normal operation of a unit or equipment is influenced, the work of maintenance personnel is increased, and the shutdown maintenance time of the equipment is prolonged.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide a rotatory nozzle ring to solve the problem that proposes in the above-mentioned background art, can improve the life more than one time of nozzle cascade blade, reduced user's nozzle cascade and overhauld the maintenance cost and reduce and make the coal pulverizer unnecessary shut down because of changing the nozzle cascade.
In order to achieve the above purpose, the present application provides the following technical solutions: the utility model provides a rotatory nozzle ring, includes middle support body, the inside of middle support body is provided with the mill, the flange is installed at the top of mill, the top of flange is installed dull and stereotypedly, outer surrounding plate is installed to the edge of dull and stereotyped bottom, the installation of dull and stereotyped bottom has interior wallboard, outer surrounding plate with a plurality of equidistance distribution's blade is installed to interior wallboard, interior wallboard with outer surrounding plate reaches among the narrow lower wide ring type cavity that the flat board encloses, see from the ring body center the contained angle alpha of blade and horizontal plane, this contained angle is the alpha scope and is thirty five degrees to seventy five degrees.
By means of the structure: the thickness of the blades is gradually increased from the top to the bottom in a trapezoidal change manner, so that the service life of the blades can be prolonged by more than one time, the overhauling and maintenance cost of a nozzle ring of a user is reduced, and unnecessary shutdown of the coal mill caused by replacement of the nozzle ring is reduced; meanwhile, the time of hot air passing through the nozzle ring is shortened, the ventilation efficiency of the nozzle ring is improved, and the output of the coal mill is favorably improved.
Preferably, the thickness of the blade is changed in a trapezoidal shape, and the thickness of the top of the blade is half of the thickness of the bottom of the blade.
Furthermore, the thickness of the blades is gradually thickened in a trapezoidal change from the top to the bottom, the service life of the blades can be prolonged by more than one time, the overhauling and maintenance cost of a nozzle ring of a user is reduced, and unnecessary shutdown of the coal mill due to replacement of the nozzle ring is reduced.
Preferably, the inner wall of the middle frame body is provided with an inner lining plate, the inner wall of the inner lining plate is movably provided with a cone static nozzle ring, and an asbestos square rope is arranged between the cone static nozzle ring and the inner lining plate.
Further, asbestos wool, known as alumina silicate fiber rope, is commonly used as a thermal insulating material in various thermal devices and heat transfer systems.
Preferably, round steel is arranged at the top of the asbestos square rope and is installed on the outer side wall of the cone static nozzle ring, and the round steel is a pressing piece and used for pressing the asbestos square rope.
Preferably, twelve to twenty unthreaded holes distributed equidistantly are formed in the outer side wall of the cone static nozzle ring, twelve to twenty threaded cylinders distributed equidistantly are mounted on the inner side of the inner wall of the middle support body, countersunk bolts are slidably mounted on the inner wall of the unthreaded holes, and outer side walls of the countersunk bolts are in threaded connection with the inner wall of the threaded cylinders.
Furthermore, the cone static nozzle ring fixed by the countersunk head bolt connection avoids the problem that the movable nozzle ring needs to be cut and removed before a flat plate is installed, the cone static nozzle ring can be reused, the problem that the whole set of nozzle ring needs to be replaced due to the fact that only the outer peripheral plate and the inner wall plate are replaced is avoided, the overhaul cost is saved, and overhaul work of a maintainer on the movable nozzle ring is facilitated.
Preferably, the blades are replaced by arc-shaped pieces, and the unfolding angle of the arc-shaped pieces ranges from thirty-five degrees to seventy-five degrees.
Furthermore, the arc-shaped sheet can be thickened like the effect that the thickness of the blade is changed from the top to the bottom in a trapezoidal mode, and meanwhile materials can be saved.
In conclusion, the technical effects and advantages of the utility model are as follows:
1. in the utility model, the thickness of the blades is gradually thickened from the top to the bottom in a trapezoidal change manner, so that the service life of the blades can be prolonged by more than one time, the overhaul and maintenance cost of a nozzle ring of a user is reduced, and unnecessary shutdown of the coal mill caused by replacement of the nozzle ring is reduced; meanwhile, the time of hot air passing through the nozzle ring is shortened, the ventilation efficiency of the nozzle ring is improved, and the output of the coal mill is favorably improved.
2. In the utility model, the cone static nozzle ring fixed by the countersunk head bolt connection avoids the problem that the movable nozzle ring needs to be cut and removed before a flat plate is installed, and the cone static nozzle ring can be reused, thus avoiding the problem that the whole set of nozzle ring needs to be replaced due to only replacing the outer peripheral plate and the inner wall plate, saving the maintenance cost and facilitating the maintenance work of a maintainer on the movable nozzle ring.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic perspective view of a rotary nozzle ring in the embodiment 1;
FIG. 2 is a schematic view of the partially cut-away structure of FIG. 1 in this embodiment 1;
FIG. 3 is a schematic front view of the structure of FIG. 2 in this embodiment 1;
FIG. 4 is a schematic view of a rotary nozzle ring mounting structure in the embodiment 1;
FIG. 5 is a schematic view of a rotary nozzle ring mounting structure in the embodiment 2; .
In the figure: 1. a peripheral plate; 2. a flat plate; 3. a cone static nozzle ring; 4. a countersunk bolt; 5. a blade; 6. a middle frame body; 7. an inner liner plate; 8. an asbestos square rope; 9. round steel; 10. a threaded barrel; 11. an inner wall panel; 12. an arc-shaped sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): referring to fig. 1-4, a rotary nozzle ring comprises a middle frame body 6, a grinding disc is arranged inside the middle frame body 6, a flange is mounted on the top of the grinding disc, the flange can be any one of flanges in the prior art, and the size of the flange is determined according to the size of the grinding disc.
Dull and stereotyped 2 is installed at the top of flange, outer surrounding plate 1 is installed to the edge of 2 bottoms on the dull and stereotyped, 2 bottoms on the dull and stereotyped install interior wallboard 11, outer surrounding plate 1 with a plurality of equidistance distribution's blade 5 is installed to interior wallboard 11, and the high-speed rotation of blade 5 can make water diverge everywhere.
In an annular cavity which is narrow at the top and wide at the bottom and is formed by the inner wall plate 11, the outer peripheral plate 1 and the flat plate 2, an included angle alpha between the blade 5 and the horizontal plane is seen from the center of the annular body, the included angle alpha ranges from thirty-five degrees to seventy-five degrees, and the included angle alpha ranges from thirty-five degrees to seventy-five degrees, so that the centrifugal force applied to water can be increased.
By means of the structure: the thickness of the blades 5 is gradually increased from the top to the bottom in a trapezoidal change manner, so that the service life of the blades 5 can be prolonged by more than one time, the overhauling and maintenance cost of a nozzle ring of a user is reduced, and unnecessary shutdown of the coal mill caused by replacement of the nozzle ring is reduced; meanwhile, the time of hot air passing through the nozzle ring is shortened, the ventilation efficiency of the nozzle ring is improved, and the output of the coal mill is favorably improved.
As a preferred embodiment of the present embodiment, as shown in fig. 5, the thickness of the vane 5 is changed in a trapezoidal manner, the thickness of the top of the vane 5 is half of the thickness of the bottom of the vane 5, and the thickness of the vane 5 is gradually increased in a trapezoidal manner from the top to the bottom, so that the service life of the vane 5 can be increased by more than one time, the maintenance cost of the nozzle ring for users can be reduced, and unnecessary shutdown of the coal mill due to replacement of the nozzle ring can be reduced.
As a preferred embodiment of this embodiment, as shown in fig. 5, an inner lining plate 7 is installed on the inner wall of the middle frame body 6, a cone static nozzle ring 3 is movably installed on the inner wall of the inner lining plate 7, and asbestos square ropes 8, namely 8 alumina silicate fiber ropes, are installed between the cone static nozzle ring 3 and the inner lining plate 7, and are generally used as heat-insulating materials in various thermal devices and heat conduction systems.
As a preferred embodiment of this embodiment, as shown in fig. 5, round steel 9 is disposed on the top of the asbestos square rope 8, the round steel 9 is mounted on the outer side wall of the cone static nozzle ring 3, and the round steel 9 is a pressing member for pressing the asbestos square rope 8.
As a preferred embodiment of this embodiment, as shown in fig. 5, twelve to twenty unthreaded holes equidistantly distributed are seted up to the lateral wall of cone static nozzle ring 3, twelve to twenty equidistantly distributed screw thread barrels 10 are installed to the inboard of middle support body 6 inner wall, the inner wall slidable mounting of unthreaded hole has countersunk bolt 4, the lateral wall spiro union of countersunk bolt 4 is installed on the inner wall of screw thread barrel 10, and cone static nozzle ring 3 fixed by countersunk bolt 4 connection has avoided installing flat board 2 after needing to cut cone static nozzle ring 3 and demolish when changing the movable nozzle ring, and cone static nozzle ring 3 also can used repeatedly, has avoided needing to change a whole set of nozzle ring because of only changing outer surrounding plate 1 and inner wall plate 11, has saved the maintenance cost, has also made things convenient for the maintenance work of maintainer to moving the nozzle ring.
Example 2: unlike the embodiment 1, as shown in fig. 5, the blade 5 is replaced by the arc-shaped piece 12, the unfolding angle of the arc-shaped piece 12 ranges from thirty-five degrees to seventy-five degrees, the arc-shaped piece 12 can be thickened like the blade 5, and the thickness of the blade 5 changes from top to bottom in a trapezoid manner, and meanwhile, materials can be saved.
This practical theory of operation:
the thickness of the blades 5 is gradually increased from the top to the bottom in a trapezoidal change manner, so that the service life of the blades 5 can be prolonged by more than one time, the overhauling and maintenance cost of a nozzle ring of a user is reduced, and unnecessary shutdown of the coal mill caused by replacement of the nozzle ring is reduced; meanwhile, the time of hot air passing through the nozzle ring is shortened, the ventilation efficiency of the nozzle ring is improved, and the output of the coal mill is favorably improved.
The cone static nozzle ring 3 which is connected and fixed by the countersunk head bolts 4 avoids the problem that the movable nozzle ring needs to be cut and removed before the flat plate 2 is installed, the cone static nozzle ring 3 can be reused, the problem that the whole set of nozzle ring needs to be replaced due to the fact that only the outer peripheral plate 1 and the inner wall plate 11 are replaced is avoided, the overhaul cost is saved, and overhaul work of the movable nozzle ring by maintainers is facilitated.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (7)
1. The utility model provides a rotatory nozzle ring, includes middle support body (6), the inside of middle support body (6) is provided with mill, its characterized in that: the flange is installed at the top of mill, dull and stereotyped (2) are installed at the top of flange, peripheral board (1) is installed to the edge of dull and stereotyped (2) bottom, the installation of dull and stereotyped (2) bottom has interior wallboard (11), peripheral board (1) with a plurality of equidistance distribution's blade (5) are installed to interior wallboard (11), interior wallboard (11) with peripheral board (1) and among the narrow lower wide ring type cavity of going up that dull and stereotyped (2) enclose, see from the ring body center blade (5) and the contained angle alpha of horizontal plane, this contained angle is the alpha scope and is thirty five degrees to seventy five degrees.
2. A rotary nozzle ring according to claim 1, wherein: the thickness of the blade (5) is changed in a trapezoidal mode, and the thickness of the top of the blade (5) is half of the thickness of the bottom of the blade (5).
3. A rotary nozzle ring according to claim 1, wherein: an inner lining plate (7) is installed on the inner wall of the middle frame body (6), a cone static nozzle ring (3) is movably installed on the inner wall of the inner lining plate (7), and an asbestos square rope (8) is installed between the cone static nozzle ring (3) and the inner lining plate (7).
4. A rotary nozzle ring according to claim 3, wherein: round steel (9) are arranged at the top of the asbestos square rope (8), and the round steel (9) is installed on the outer side wall of the cone static nozzle ring (3).
5. A rotary nozzle ring according to claim 4, wherein: twelve to twenty unthreaded holes distributed equidistantly are formed in the outer side wall of the cone static nozzle ring (3), and twelve to twenty threaded cylinders (10) distributed equidistantly are mounted on the inner side of the inner wall of the middle frame body (6).
6. A rotary nozzle ring according to claim 5, wherein: the inner wall of unthreaded hole slidable mounting has countersunk head bolt (4), the lateral wall spiro union of countersunk head bolt (4) is installed on the inner wall of a screw thread section of thick bamboo (10).
7. A rotary nozzle ring according to claim 1, wherein: replacing the blade (5) with an arc-shaped piece (12), wherein the arc-shaped piece (12) is unfolded by an angle ranging from thirty-five degrees to seventy-five degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121580670.7U CN215694764U (en) | 2021-07-13 | 2021-07-13 | Rotary nozzle ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121580670.7U CN215694764U (en) | 2021-07-13 | 2021-07-13 | Rotary nozzle ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215694764U true CN215694764U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121580670.7U Active CN215694764U (en) | 2021-07-13 | 2021-07-13 | Rotary nozzle ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215694764U (en) |
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2021
- 2021-07-13 CN CN202121580670.7U patent/CN215694764U/en active Active
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