CN215419942U - Grinding room for cement mill - Google Patents
Grinding room for cement mill Download PDFInfo
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- CN215419942U CN215419942U CN202120293134.2U CN202120293134U CN215419942U CN 215419942 U CN215419942 U CN 215419942U CN 202120293134 U CN202120293134 U CN 202120293134U CN 215419942 U CN215419942 U CN 215419942U
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- motor
- slip ring
- carbon brush
- axial flow
- flow fan
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Abstract
The utility model discloses a grinding room for a cement grinding mill, which comprises: the wall body is provided with at least one first vent hole and at least one second vent hole on two opposite wall surfaces, wherein a first silencing barrel is arranged in each first vent hole, and a second silencing barrel is arranged in each second vent hole; the at least one first axial flow fan is arranged on the wall surface of the wall body adjacent to the first vent hole; the third silencing cylinder is connected with the air outlet of the first axial flow fan; the second axial flow fan is arranged on the wall surface of the wall body adjacent to the second vent hole, and the second axial flow fan and the first axial flow fan are symmetrically arranged on the wall body; and the at least one fourth silencing barrel is connected with the air outlet of the second axial flow fan. Air convection is formed in the grinding room, so that the heat exchange between the inside and the outside of the grinding room is accelerated, the ambient temperature in the grinding room is reduced, and the stability of the operation of the cement mill is further prevented from being influenced by overhigh temperature; in addition, the noise of the grinding room can be reduced, and the noise pollution is reduced.
Description
Technical Field
The utility model belongs to the technical field of cement production equipment, and particularly relates to a grinding room for a cement mill.
Background
The cement mill is a key device for crushing materials after the materials are crushed. The ball mill is widely applied to the production industries of cement, silicate products, novel building materials, refractory materials, fertilizers, black and non-ferrous metal ore dressing, glass ceramics and the like, and is used for carrying out dry or wet grinding on various ores and other grindable materials.
The cement mill is a cement grinding device, the motor provides power for the cement mill, the main motor of the cement mill is a winding motor, a slip ring and a carbon brush assembly work in a protective cover surrounded by an iron sheet plate, and when the motor runs, the slip ring and the carbon brush generate a large amount of heat through friction and large current, so that the slip ring and the carbon brush run at a temperature which exceeds the ambient temperature by about 95 ℃ for a long time. In order to ensure that production is not influenced, need electrical maintenance personnel to utilize and examine certainly and shut down with the limit and can carry out the maintenance of unscheduled maintenance to main motor sliding ring and carbon brush, discovery carbon brush and brush nest have partial damage when maintaining at every turn, and the rotor solenoid is drawn forth conductive screw and is had the bad condition, leads to the motor operation unstable, influences the operating efficiency of cement mill, and the leading cause of damage includes: the motor body generates heat, the temperature of the slip ring is higher, and the heat radiation in the grinding room is serious.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a grinding room for a cement grinding mill, which effectively reduces the risk of unstable operation of a motor caused by the fact that heat cannot be discharged in time by arranging a plurality of axial flow fans to cool the interior of the grinding room and the motor.
The technical scheme adopted by the utility model is as follows: a grinding house for a cement mill, comprising:
the wall comprises a wall body, wherein two opposite wall surfaces of the wall body are respectively provided with at least one first vent hole and at least one second vent hole, a first silencing tube is arranged in each first vent hole, and a second silencing tube is arranged in each second vent hole;
the at least one first axial flow fan is arranged on the wall surface of the wall body adjacent to the first vent hole;
the third silencing cylinder is connected with the air outlet of the first axial flow fan;
the second axial flow fan is arranged on the wall surface of the wall body adjacent to the second vent hole, and the second axial flow fan and the first axial flow fan are symmetrically arranged on the wall body;
and the at least one fourth silencing barrel is connected with the air outlet of the second axial flow fan.
As an optional technical solution, the grinding room further comprises:
the first rotating shaft is fixed in the first ventilation hole;
a plurality of first rotating blades rotatably provided on the first rotating shaft;
the second rotating shaft is fixed in the second ventilation hole;
and the second rotating blades are rotatably arranged on the second rotating shaft.
As an optional technical scheme, sound absorption layers are arranged on the inner walls of the first, second, third and fourth muffling cylinders.
As an optional technical scheme, the sound absorption layer is arranged on the inner wall of the wall body.
As an optional technical solution, the sound absorption layer includes:
supporting the skeleton frame;
the foaming plate is arranged in the support framework frame and is parallel to the wall body, and the foaming plate forms the surface layer of the sound absorption layer;
a plurality of microperforated panels are located parallel to each other in the support skeleton frame, just microperforated panel with the foaming board is parallel, wherein, adjacent two be equipped with first air bed between the microperforated panel, be equipped with the second air bed between foaming board and the microperforated panel.
As an optional technical scheme, the grinding room further comprises a cement mill arranged in an indoor space, and the indoor space is surrounded by the wall.
As an optional technical solution, the cement mill comprises:
a drive motor;
the input shaft of the speed reducer is connected with the output shaft of the driving motor;
the driving transmission wheel is fixed on an output shaft of the speed reducer;
the driven driving wheel is meshed with the driving wheel;
the roller is fixedly connected with the driven driving wheel, wherein the driven driving wheel is in a circular ring shape, and the circular ring-shaped driven driving wheel is sleeved on the outer circumference of the roller.
As an optional technical solution, the driving motor includes:
a motor main body;
the motor output shaft is connected with the output end of the motor main body;
the motor slip ring is arranged on the motor output shaft;
the carbon brush holder is arranged around the motor slip ring;
the carbon brush is arranged on the carbon brush holder and is matched with the motor slip ring for use;
the conductive screw is arranged on the motor slip ring;
the conductive nut is arranged at one end of the conductive screw rod;
and the conductive nut gasket is arranged on the conductive screw rod and is positioned between the conductive nut and the motor slip ring.
As an optional technical solution, the motor slip ring includes a motor M-phase slip ring, a motor L-phase slip ring and a motor K-phase slip ring, the motor M-phase slip ring, the motor L-phase slip ring and the motor K-phase slip ring are parallel to each other and are distributed on the motor output shaft at intervals, the motor M-phase slip ring, the motor L-phase slip ring and the motor K-phase slip ring are all provided with the conductive screw rods, and each conductive screw rod is provided with the conductive nut and the conductive nut gasket; the carbon brush holder comprises a first carbon brush holder, a second carbon brush holder and a third carbon brush holder which are respectively arranged around the M-phase slip ring, the L-phase slip ring and the K-phase slip ring of the motor;
the carbon brushes comprise a first carbon brush, a second carbon brush and a third carbon brush which are respectively arranged on the first carbon brush holder, the second carbon brush holder and the third carbon brush holder.
As an optional technical scheme, the driving motor further comprises a housing, the motor main body, the motor output shaft, the motor slip ring, the carbon brush holder, the carbon brush, the conductive screw, the conductive nut and the conductive nut gasket are all located in the housing, and a third axial flow fan corresponding to the motor slip ring is arranged at one end of the housing.
The utility model has the beneficial effects that: in the application, a first axial flow fan, a second axial flow fan, a first vent hole and a second vent hole are arranged on a wall body of a grinding room to form air convection, accelerate heat exchange between the inside and the outside of the grinding room, reduce the ambient temperature in the grinding room, reduce the temperature of a cement grinding mill and further avoid the influence of overhigh temperature on the running stability of the cement grinding mill; in addition, the first silencing tube, the second silencing tube, the third silencing tube and the fourth silencing tube are arranged, so that the noise of the grinding room can be reduced, and the noise pollution is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a grinding room for a cement mill in the embodiment.
Fig. 2 is a schematic structural view of the sound absorbing layer.
FIG. 3 is a schematic structural diagram of a cement mill.
Fig. 4 is a schematic structural view of the driving motor.
Fig. 5 is an enlarged schematic view of the internal structure of the driving motor.
Fig. 6 is an enlarged view of the conductive screw, the conductive nut, and the conductive nut washer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.
The utility model is further described with reference to the following figures and specific embodiments.
Examples
As shown in fig. 1, a grinding room for a cement mill includes:
the wall body 16 is provided with at least one first ventilation hole and at least one second ventilation hole on two opposite wall surfaces, wherein a first silencing barrel 17 is arranged in each first ventilation hole, and a second silencing barrel 18 is arranged in each second ventilation hole;
at least one first axial fan 19 disposed on a wall surface of the wall 16 adjacent to the first vent;
at least one third silencing pot 20 connected with the air outlet of the first axial fan 19;
at least one second axial fan 21, which is arranged on the wall surface of the wall body adjacent to the second vent hole, and the second axial fan 21 and the first axial fan 19 are symmetrically arranged on the wall body 16;
and the at least one fourth silencing pot 22 is connected with the air outlet of the second axial flow fan 21.
Wherein, set up first axial fan 19, second axial fan 21, first ventilation hole and second ventilation hole on the wall body 16 of mill room to form the air convection, grind the inside and outside heat exchange in room with higher speed, reduce the ambient temperature in the mill room, with the temperature that reduces the cement mill, and then avoid the high temperature to influence the stability of cement mill operation. In addition, the first silencing tube 17, the second silencing tube 18, the third silencing tube 20 and the fourth silencing tube 22 are also arranged, so that the noise of the grinding room can be reduced, and the noise pollution can be reduced.
As an optional embodiment, the grinding room further comprises:
the first rotating shaft is fixed in the first ventilation hole;
a plurality of first rotating blades 23 rotatably provided on the first rotating shaft;
the second rotating shaft is fixed in the second ventilation hole;
and a plurality of second rotating blades 24 rotatably provided on the second rotating shaft.
Set up first rotating vane 23 and second rotating vane 24 in first ventilation hole and second ventilation hole respectively, along with the air current flows, first rotating vane 23 and second rotating vane 24 rotated under the drive of air current, and first rotating vane 23 and second rotating vane 24 rotate and get up the back again and be favorable to accelerating the air current and pass through the ventilation hole promptly, flow through with higher speed air current to further accelerate the heat exchange inside and outside the mill room.
As an alternative embodiment, the first muffling cylinder 17, the second muffling cylinder 18, the third muffling cylinder 20 and the fourth muffling cylinder 22 are all provided with sound absorbing layers on the inner walls of the cylinder bodies.
As an optional implementation mode, the sound absorption layer is arranged on the inner wall of the wall body.
As an alternative embodiment, as shown in fig. 2, the sound absorption layer includes:
a support skeleton frame 2501;
a foam board 2502 which is provided in the supporting skeleton frame 2501 and is parallel to the wall 16, and the foam board 2502 constitutes a surface layer of the sound absorption layer;
a plurality of microperforated plates 2503 arranged in parallel with each other in the supporting frame 2501, and the microperforated plates 2503 are parallel to the foamed plate 2502, wherein a first air layer 2504 is provided between two adjacent microperforated plates 2503, and a second air layer 2505 is provided between the foamed plate 2502 and the microperforated plate 2503. Compared with the common perforated plate, the micro-perforated plate has the advantages that the ratio of the acoustic resistance to the acoustic mass is greatly improved, the micro-perforated plate is a good sound absorption material, and the noise pollution of a grinding room can be effectively reduced.
In an alternative embodiment, the grinding room further comprises a cement mill 26 disposed in an indoor space defined by the walls 16.
As an alternative embodiment, as shown in fig. 3, the cement mill 26 includes:
a drive motor 11;
a speed reducer 12, an input shaft of which is connected with an output shaft of the driving motor 11;
the driving transmission wheel 13 is fixed on an output shaft of the speed reducer 12;
the driven transmission wheel 14 is meshed with the driving transmission wheel 13;
the roller 15 is fixedly connected with the driven driving wheel 14, wherein the driven driving wheel 14 is annular, and the annular driven driving wheel 14 is sleeved on the outer circumference of the roller 15.
In operation, the driving motor 11 drives the roller 15 to rotate, and specifically, the driving motor 11 drives the driving transmission wheel 13 to rotate through the speed reducer 12, so as to drive the driven transmission wheel 14 engaged with the driving transmission wheel 13 to rotate, and finally, the roller 15 fixed on the driven transmission wheel 14 rotates.
As an alternative embodiment, as shown in fig. 4, 5 and 6, the driving motor 11 includes:
a motor main body 1;
the motor output shaft 2 is connected with the output end of the motor main body 1;
the motor slip ring 3 is arranged on the motor output shaft 2;
a carbon brush holder 4 disposed around the motor slip ring 3;
the carbon brush 5 is arranged on the carbon brush holder 4 and is matched with the motor slip ring 3 for use;
the conductive screw 6 is arranged on the motor slip ring 3;
the conductive nut 7 is arranged at one end of the conductive screw 6;
and the conductive nut gasket 8 is arranged on the conductive screw rod 6 and is positioned between the conductive nut 7 and the motor slip ring 3.
Discover that the carbon brush has partial damage with the brush nest when maintaining at every turn, the rotor solenoid is drawn forth conductive screw and is had the bad condition of damage, leads to the motor operation unstable, influences the operating efficiency of cement mill, and the reason of damage still includes: the starting current of the motor is high, the motor is fully loaded in operation, and the current-carrying capacity of the conductive copper screw designed by the motor is insufficient, so that the conductive screw is burnt. In this embodiment, for the biggest reduction motor fault rate, reduction in production cost and intensity of labour, promote cement mill operating efficiency and motor reliability, conductive nut 7 and conductive nut gasket 8 have been designed to increase on conductive screw 6, with this area of contact between conductive screw 6 and the motor sliding ring 3 has been increased, the overload capacity of conductive screw 6 with the contact department of motor sliding ring 3 has been increased, reduce the heat loss, the life of conductive screw 6 has been prolonged, and simultaneously, conductive nut 7 and conductive nut gasket 8's setting also can increase conductive screw 6's stability, the risk that the motor vibrates the in-process and causes the screw rod to become flexible and produce the trouble has been reduced.
As an optional implementation manner, the motor slip ring 3 includes a motor M-phase slip ring 301, a motor L-phase slip ring 302, and a motor K-phase slip ring 303, the motor M-phase slip ring 301, the motor L-phase slip ring 302, and the motor K-phase slip ring 303 are parallel to each other and are distributed on the motor output shaft 2 at intervals, the conductive screws 6 are respectively disposed on the motor M-phase slip ring 301, the motor L-phase slip ring 302, and the motor K-phase slip ring 303, and each conductive screw 6 is provided with the conductive nut 7 and the conductive nut gasket 8. The conductive nut gasket 8 is a copper nut gasket; the motor M-phase slip ring 301, the motor L-phase slip ring 302 and the motor K-phase slip ring 303 are respectively provided with two conductive screw rods 6; the motor M-phase slip ring 301, the motor L-phase slip ring 302 and the motor K-phase slip ring 303 are all perpendicular to the motor output shaft 2.
The conductive screws 6 are arranged on the M-phase slip ring 301, the L-phase slip ring 302 and the K-phase slip ring 303 of the motor, and each conductive screw 6 is provided with a conductive nut 7 and a conductive nut gasket 8, so that the contact area between the conductive screw 6 and each phase of slip ring of the motor is increased, the overload of the contact part of the conductive screw 6 and each phase of slip ring of the motor is increased, the heat loss is reduced, and the service life of the conductive screw 6 is prolonged.
As an alternative embodiment, the carbon brush holder 4 includes a first carbon brush holder 401, a second carbon brush holder 402, and a third carbon brush holder 403 respectively disposed around the M-phase slip ring 301, the L-phase slip ring 302, and the K-phase slip ring 303 of the motor, and correspondingly, the carbon brush 5 includes a first carbon brush 501, a second carbon brush 502, and a third carbon brush 503 respectively disposed on the first carbon brush holder 401, the second carbon brush holder 402, and the third carbon brush holder 403.
As an optional implementation manner, the driving motor 11 further includes a housing 9, the motor main body 1, the motor output shaft 2, the motor slip ring 3, the carbon brush holder 4, the carbon brush 5, the conductive screw 6, the conductive nut 7, and the conductive nut gasket 8 are all located in the housing 9, and one end of the housing 9 is provided with a third axial flow fan 10 corresponding to the motor slip ring 3.
Discover that the carbon brush has partial damage with the brush nest when maintaining at every turn, the rotor solenoid is drawn forth conductive screw and is had the bad condition of damage, leads to the motor operation unstable, influences the operating efficiency of cement mill, and the reason of damage still includes: carbon powder generated in operation is attached to the surface of a motor slip ring and cannot be discharged in time, so that more dust is accumulated at the slip ring, and short circuit blasting is easily caused by 'creepage'. In this embodiment, the third axial flow fan 10 is added at the motor slip ring 3 to forcibly cool the motor slip ring 3 and the carbon brush 5, and carbon powder attached to the surface of the motor slip ring 3 can be thoroughly removed, so that the possibility of creepage at the slip ring is reduced, and the occurrence of blasting failure due to carbon powder arcing is avoided. After the third axial flow fan 10 is additionally arranged, the temperature of the contact part of the surface of the slip ring and the carbon brush is reduced to about 55 ℃ of the ambient temperature, and basically no carbon powder is adsorbed on the slip ring.
The utility model is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (10)
1. A mill house for a cement mill, comprising:
the wall comprises a wall body, wherein two opposite wall surfaces of the wall body are respectively provided with at least one first vent hole and at least one second vent hole, a first silencing tube is arranged in each first vent hole, and a second silencing tube is arranged in each second vent hole;
the at least one first axial flow fan is arranged on the wall surface of the wall body adjacent to the first vent hole;
the third silencing cylinder is connected with the air outlet of the first axial flow fan;
the second axial flow fan is arranged on the wall surface of the wall body adjacent to the second vent hole, and the second axial flow fan and the first axial flow fan are symmetrically arranged on the wall body;
and the at least one fourth silencing barrel is connected with the air outlet of the second axial flow fan.
2. The grinding house for a cement mill according to claim 1, further comprising:
the first rotating shaft is fixed in the first ventilation hole;
a plurality of first rotating blades rotatably provided on the first rotating shaft;
the second rotating shaft is fixed in the second ventilation hole;
and the second rotating blades are rotatably arranged on the second rotating shaft.
3. The grinding house for a cement mill according to claim 1, characterized in that: and sound absorption layers are arranged on the inner walls of the first silencing tube, the second silencing tube, the third silencing tube and the fourth silencing tube.
4. The grinding house for a cement mill according to claim 3, characterized in that: and the inner wall of the wall body is provided with the sound absorption layer.
5. The grinding house for a cement mill according to claim 4, characterized in that the sound absorption layer comprises:
supporting the skeleton frame;
the foaming plate is arranged in the support framework frame and is parallel to the wall body, and the foaming plate forms the surface layer of the sound absorption layer;
a plurality of microperforated panels are located parallel to each other in the support skeleton frame, just microperforated panel with the foaming board is parallel, wherein, adjacent two be equipped with first air bed between the microperforated panel, be equipped with the second air bed between foaming board and the microperforated panel.
6. The grinding house for a cement mill according to claim 1, characterized in that: the wall body is arranged in the room, and the room is surrounded by the wall body.
7. The grinding house for a cement mill according to claim 6, characterized in that: the cement mill comprises:
a drive motor;
the input shaft of the speed reducer is connected with the output shaft of the driving motor;
the driving transmission wheel is fixed on an output shaft of the speed reducer;
the driven driving wheel is meshed with the driving wheel;
the roller is fixedly connected with the driven driving wheel, wherein the driven driving wheel is in a circular ring shape, and the circular ring-shaped driven driving wheel is sleeved on the outer circumference of the roller.
8. The grinding house for a cement mill according to claim 7, characterized in that the drive motor comprises:
a motor main body;
the motor output shaft is connected with the output end of the motor main body;
the motor slip ring is arranged on the motor output shaft;
the carbon brush holder is arranged around the motor slip ring;
the carbon brush is arranged on the carbon brush holder and is matched with the motor slip ring for use;
the conductive screw is arranged on the motor slip ring;
the conductive nut is arranged at one end of the conductive screw rod;
and the conductive nut gasket is arranged on the conductive screw rod and is positioned between the conductive nut and the motor slip ring.
9. The grinding house for a cement mill according to claim 8, characterized in that:
the motor slip ring comprises a motor M-phase slip ring, a motor L-phase slip ring and a motor K-phase slip ring, the motor M-phase slip ring, the motor L-phase slip ring and the motor K-phase slip ring are parallel to each other and are distributed on the motor output shaft at intervals, the motor M-phase slip ring, the motor L-phase slip ring and the motor K-phase slip ring are respectively provided with the conductive screw rods, and each conductive screw rod is provided with the conductive nut and the conductive nut gasket;
the carbon brush holder comprises a first carbon brush holder, a second carbon brush holder and a third carbon brush holder which are respectively arranged around the M-phase slip ring, the L-phase slip ring and the K-phase slip ring of the motor;
the carbon brushes comprise a first carbon brush, a second carbon brush and a third carbon brush which are respectively arranged on the first carbon brush holder, the second carbon brush holder and the third carbon brush holder.
10. The grinding house for a cement mill according to claim 8, characterized in that: the driving motor further comprises a shell, the motor main body, the motor output shaft, the motor sliding ring, the carbon brush holder, the carbon brush, the conductive screw, the conductive nut and the conductive nut gasket are all located in the shell, and a third axial flow fan corresponding to the motor sliding ring is arranged at one end of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120293134.2U CN215419942U (en) | 2021-02-02 | 2021-02-02 | Grinding room for cement mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120293134.2U CN215419942U (en) | 2021-02-02 | 2021-02-02 | Grinding room for cement mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215419942U true CN215419942U (en) | 2022-01-04 |
Family
ID=79666418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120293134.2U Active CN215419942U (en) | 2021-02-02 | 2021-02-02 | Grinding room for cement mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215419942U (en) |
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2021
- 2021-02-02 CN CN202120293134.2U patent/CN215419942U/en active Active
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