CN211937189U - Grading discharging device of dry ball mill - Google Patents
Grading discharging device of dry ball mill Download PDFInfo
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- CN211937189U CN211937189U CN201922379760.9U CN201922379760U CN211937189U CN 211937189 U CN211937189 U CN 211937189U CN 201922379760 U CN201922379760 U CN 201922379760U CN 211937189 U CN211937189 U CN 211937189U
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Abstract
The utility model relates to a grading discharging device of a dry ball mill, which comprises a discharging cover, a discharging pipe, a material sucking pipe, an air flow regulating valve, a cyclone collector and a connecting pipe, wherein a grading wheel is installed in the output end of the material sucking pipe, the grading wheel is driven by a driving mechanism, the grading wheel is positioned above the output end of the discharging pipe, a first labyrinth ring and a second labyrinth ring which are mutually matched are arranged between the material sucking pipe and the grading wheel, the first labyrinth ring is fixedly installed on the inner wall of the material sucking pipe, the first labyrinth ring is provided with an annular groove, the second labyrinth ring is fixedly installed on the grading wheel, and the second labyrinth ring is provided with an annular bead; the inner wall of the material suction pipe is provided with an air inlet channel which is communicated with the annular groove. The utility model discloses a grading discharging device of a dry ball mill, which ensures the connection operation of the discharging of the dry ball mill through the design of a rotary joint; the dynamic sealing problem of the grading wheel and the material suction pipe is also solved.
Description
Technical Field
The utility model belongs to the technical field of the ball mill, concretely relates to hierarchical discharging device of dry process ball mill.
Background
Under the action of air flow, materials in the existing ball mill are ground to a certain fineness and then are discharged in time. In the ejection of compact in-process, can inevitably appear that the suction air current is too big, and some material of great granule also can be taken out, and the existence of large granule material has certain influence to the material quality to influence the magnetic property of product.
In the prior art, patent document No. CN205361522U discloses a dry ball mill discharging device with a grading function, which comprises a discharging cover, a discharging pipe, a material sucking pipe, an airflow regulating valve, a cyclone collector, a connecting pipe and a grading mechanism, wherein the discharging cover is arranged at the discharging end of the ball mill, the discharging pipe is arranged at the lower end of the discharging cover and is communicated with the material sucking pipe, the airflow regulating valve is arranged at the lower end of the material sucking pipe, one end of the connecting pipe is communicated with the material sucking pipe, the other end of the connecting pipe is communicated with the rear end of the discharging cover, the output end of the material sucking pipe is connected with the input end of the cyclone collector, the material sucking pipe is provided with the grading mechanism above the output end of the discharging pipe, the grading mechanism comprises a motor, a first gear, a second gear, a box body, a rotating shaft and a plurality of blades, a box body is arranged in the material, the upper end of the rotating shaft is provided with a second gear meshed with the first gear, and the lower end of the rotating shaft is provided with blades. However, a certain gap is formed between the blade and the material suction pipe of the dry ball mill discharging device, and large particles are easy to enter the cyclone collector from the gap, so that the magnetic performance of a product is influenced. In addition, during discharging, the dry ball mill needs to be stopped, and continuous discharging cannot be realized.
SUMMERY OF THE UTILITY MODEL
Based on the above-mentioned not enough that exists among the prior art, the utility model provides a hierarchical discharging device of dry process ball mill.
In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:
a grading discharging device of a dry ball mill comprises a discharging cover, a discharging pipe, a material sucking pipe, an air flow regulating valve, a cyclone collector and a connecting pipe, wherein the discharging cover is connected with the discharging end of the ball mill through a rotary joint; one end of the connecting pipe is communicated with the material suction pipe, and the other end of the connecting pipe is communicated with the rear end of the discharging cover; the output end of the material suction pipe is connected with the input end of the cyclone collector positioned above the material suction pipe, a grading wheel is arranged in the output end of the material suction pipe and is driven by a driving mechanism, the grading wheel is positioned above the output end of the material discharge pipe, a first labyrinth ring and a second labyrinth ring which are matched with each other are arranged between the material suction pipe and the grading wheel, the first labyrinth ring is fixedly arranged on the inner wall of the material suction pipe and is provided with an annular groove, the second labyrinth ring is fixedly arranged on the grading wheel and is provided with an annular convex edge; the inner wall of the material suction pipe is provided with an air inlet channel which is communicated with the annular groove.
According to a preferable scheme, the driving mechanism comprises a variable frequency motor, a first gear, a second gear and a sealing box, the variable frequency motor is installed on one side of the material suction pipe, the sealing box is installed in the material suction pipe, the first gear and the second gear are located in the sealing box, the first gear is in transmission connection with the variable frequency motor, the first gear is meshed with the second gear to achieve transmission switching from horizontal direction transmission to vertical direction transmission, and the second gear is in transmission connection with the grading wheel.
Preferably, the rotary joint comprises a first flange, a first transition pipe, a bearing, a framework oil seal, a second transition pipe and a second flange; the discharge end of the ball mill is hermetically connected with the first end of a first transition pipe through a first flange, the first transition pipe is tightly matched and connected with the inner ring of a bearing, the outer ring of the bearing is fixedly connected with the first end of a second transition pipe, and a plurality of framework oil seals are sequentially arranged on the inner wall of the second transition pipe along the feeding direction; the second end of the first transition pipe extends into the second transition pipe, and the outer wall of the first transition pipe is in sealing fit with the inner ring of the framework oil seal in the second transition pipe; and the second end of the second transition pipe is hermetically connected with the inlet of the discharge cover through a second flange.
Preferably, the outer edge of the inner ring of the framework oil seal is provided with a dustproof lip part.
As preferred scheme, the quantity of skeleton oil blanket has four, and four skeleton oil blankets are tight fit side by side.
Preferably, the number of the bearings is two, and the two bearings are arranged in the bearing seat in a side-by-side tight fit mode.
Preferably, the bearing is a deep groove ball bearing.
Compared with the prior art, the utility model, beneficial effect is:
the utility model discloses a grading discharging device of a dry ball mill, which ensures the connection operation of the discharging of the dry ball mill through the design of a rotary joint;
because the first labyrinth ring and the second labyrinth ring which are mutually matched are arranged between the grading wheel and the inner wall of the material suction pipe, a labyrinth sealing mode is adopted between the first labyrinth ring and the second labyrinth ring, an air inlet channel is designed to be communicated, and an annular groove on the first labyrinth ring ensures that natural wind flowing into the grading chamber from outside air can be generated in the air inlet channel under the negative pressure action of the grading chamber, thereby not only preventing large particles from entering the grading chamber and realizing the subdivision of powder particles, but also realizing the self-suction air sealing, and solving the problem of dynamic sealing of the grading wheel and the material suction pipe.
Drawings
FIG. 1 is a schematic structural diagram of a grading discharging device of a dry ball mill in an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is a schematic structural view of a rotary joint according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a half-circle cross section of the framework oil seal of the embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will explain embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort. In addition, directional terms referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.
As shown in fig. 1, the utility model discloses dry process ball mill's hierarchical discharging device of embodiment includes rotary joint 1, ejection of compact cover 2, discharging pipe 3, inhales material pipe 4, air current control valve 5, cyclone 6, connecting pipe 7, actuating mechanism 8 and classification wheel 9.
Specifically, a discharge cover 2 is connected with the discharge end of the ball mill 0 through a rotary joint 1, a discharge pipe 3 is arranged at the lower end of the discharge cover 2, an outlet of the discharge pipe 3 is connected to a material suction pipe 4, and an air flow regulating valve 5 is arranged at the lower end of the material suction pipe 4; the lower end of the connecting pipe 7 is communicated with the material suction pipe 4, and the upper end of the connecting pipe 7 is communicated with the rear end of the discharge cover 2; the output end of the material suction pipe 4 is connected with the input end of the cyclone collector 6 positioned above the material suction pipe, a grading wheel 9 is installed in the output end of the material suction pipe 4, and the grading wheel 9 is driven by a driving mechanism 8. Wherein the classifying wheel 9 is located above the outlet end of the tapping pipe 3 and also above the connecting pipe 7.
As shown in fig. 2, a first labyrinth ring 40 and a second labyrinth ring 90 which are matched with each other are arranged between the material suction pipe 4 and the classification wheel 9, the first labyrinth ring 40 is fixedly installed on the inner wall of the material suction pipe 4 through a hollow installation seat 10, and the first labyrinth ring 40 is provided with an annular groove; the second labyrinth ring 90 is fixedly arranged at the top of the grading wheel, and the second labyrinth ring 90 is provided with an annular convex rib; the inner wall of the material suction pipe 4 is provided with an air inlet channel 41 which is communicated with the annular groove of the first labyrinth ring 40. A labyrinth sealing mode is adopted between the first labyrinth ring and the second labyrinth ring, when the grading wheel 9 rotates at a high speed, under the action of induced air of the cyclone collector 6, a negative pressure region is formed inside the grading wheel, fine powder passes through the grading wheel to enter the negative pressure region, and enters the cyclone collector through the middle spaces of the second labyrinth ring and the first labyrinth ring, and large particles are thrown out; because there is the clearance between classifying wheel and the material suction pipe, the large granule probably gets into cyclone collector through this clearance, and airflow channel 41 introduces external atmosphere into the negative pressure region for the large granule loses the power that gets into this clearance, has stopped the large granule to get into the negative pressure region, has improved the hierarchical purity of granule.
Wherein, actuating mechanism 8 includes inverter motor, first gear, second gear and seal box, and inverter motor installs in inhaling one side of material pipe, and the seal box is installed in inhaling within the material pipe, and first gear and second gear are located the seal box, and first gear passes through the transmission shaft transmission with inverter motor to be connected, and first gear realizes switching to vertical direction transmission by the horizontal direction transmission with the second gear meshing, and the second gear passes through the transmission shaft transmission with the classifying wheel to be connected.
As shown in fig. 3, the rotary joint includes a first flange 11, a first transition pipe 12, a bearing 13, a framework oil seal 14, a second transition pipe 15, and a second flange 16. Specifically, the discharge end of the ball mill 0 is hermetically connected with a first end of a first transition pipe 12 through a first flange 11, the first transition pipe 12 is tightly matched and connected with an inner ring of a bearing 13, an outer ring of the bearing 13 is fixedly connected with a first end of a second transition pipe 15, and a plurality of framework oil seals 14 are sequentially mounted on the inner wall of the second transition pipe 15 along the feeding direction; the second end of the first transition pipe 12 extends into the second transition pipe 15, and the outer wall of the first transition pipe 12 is in sealing fit with the inner ring of the framework oil seal 14 in the second transition pipe; the second end of the second transition pipe 15 is hermetically connected with the inlet of the discharging cover through a second flange 16; and the arrangement of the rotary joint realizes continuous discharging. The number of the framework oil seals 14 is four, and the four framework oil seals are tightly matched side by side; the number of the bearings 13 is two, the two bearings are arranged in the bearing block in a side-by-side close fit mode, and the bearings can be deep groove ball bearings.
As shown in fig. 4, the inner ring of the framework oil seal 14 is provided with a sealing lip 14a and a dust-proof lip 14b, so that sealing and dust prevention are realized, and the service life is longer.
The foregoing has been a detailed description of the preferred embodiments and principles of the present invention, and it will be apparent to those skilled in the art that variations may be made in the specific embodiments based on the concepts of the present invention, and such variations are considered as within the scope of the present invention.
Claims (7)
1. A grading discharging device of a dry ball mill comprises a discharging cover, a discharging pipe, a material sucking pipe, an air flow regulating valve, a cyclone collector and a connecting pipe, and is characterized in that the discharging cover is connected with the discharging end of the ball mill through a rotary joint, the discharging pipe is arranged at the lower end of the discharging cover and communicated with the material sucking pipe, and the air flow regulating valve is arranged at the lower end of the material sucking pipe; one end of the connecting pipe is communicated with the material suction pipe, and the other end of the connecting pipe is communicated with the rear end of the discharging cover; the output end of the material suction pipe is connected with the input end of the cyclone collector positioned above the material suction pipe, a grading wheel is arranged in the output end of the material suction pipe and is driven by a driving mechanism, the grading wheel is positioned above the output end of the material discharge pipe, a first labyrinth ring and a second labyrinth ring which are matched with each other are arranged between the material suction pipe and the grading wheel, the first labyrinth ring is fixedly arranged on the inner wall of the material suction pipe and is provided with an annular groove, the second labyrinth ring is fixedly arranged on the grading wheel and is provided with an annular convex edge; the inner wall of the material suction pipe is provided with an air inlet channel which is communicated with the annular groove.
2. The classifying and discharging device of the dry ball mill according to claim 1, wherein the driving mechanism comprises a variable frequency motor, a first gear, a second gear and a sealing box, the variable frequency motor is installed on one side of the material suction pipe, the sealing box is installed in the material suction pipe, the first gear and the second gear are located in the sealing box, the first gear is in transmission connection with the variable frequency motor, the first gear is meshed with the second gear to realize switching from horizontal transmission to vertical transmission, and the second gear is in transmission connection with the classifying wheel.
3. The grading discharging device of the dry ball mill according to claim 1, wherein the rotary joint comprises a first flange, a first transition pipe, a bearing, a framework oil seal, a second transition pipe and a second flange; the discharge end of the ball mill is hermetically connected with the first end of a first transition pipe through a first flange, the first transition pipe is tightly matched and connected with the inner ring of a bearing, the outer ring of the bearing is fixedly connected with the first end of a second transition pipe, and a plurality of framework oil seals are sequentially arranged on the inner wall of the second transition pipe along the feeding direction; the second end of the first transition pipe extends into the second transition pipe, and the outer wall of the first transition pipe is in sealing fit with the inner ring of the framework oil seal in the second transition pipe; and the second end of the second transition pipe is hermetically connected with the inlet of the discharge cover through a second flange.
4. The classifying discharging device of the dry ball mill according to claim 3, wherein the outer edge of the inner ring of the framework oil seal is provided with a dustproof lip.
5. The classifying and discharging device of the dry ball mill according to claim 3, wherein the number of the framework oil seals is four, and the four framework oil seals are closely matched side by side.
6. The classifying discharging device of the dry ball mill according to claim 3, wherein the number of the bearings is two, and the two bearings are closely fitted side by side on the bearing seat.
7. The classifying discharging device of the dry ball mill according to claim 6, wherein the bearing is a deep groove ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922379760.9U CN211937189U (en) | 2019-12-26 | 2019-12-26 | Grading discharging device of dry ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922379760.9U CN211937189U (en) | 2019-12-26 | 2019-12-26 | Grading discharging device of dry ball mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211937189U true CN211937189U (en) | 2020-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922379760.9U Active CN211937189U (en) | 2019-12-26 | 2019-12-26 | Grading discharging device of dry ball mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211937189U (en) |
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2019
- 2019-12-26 CN CN201922379760.9U patent/CN211937189U/en active Active
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Address after: 311800 No.5 Jianye Road, Taozhu street, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: Zhejiang ante magnetic material Co.,Ltd. Address before: 311800 No.5 Jianye Road, Taozhu street, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG ANTE MAGNETIC MATERIAL Co.,Ltd. |