CN111822104A - External circulation semi-final grinding vertical mill - Google Patents

External circulation semi-final grinding vertical mill Download PDF

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Publication number
CN111822104A
CN111822104A CN202010806400.7A CN202010806400A CN111822104A CN 111822104 A CN111822104 A CN 111822104A CN 202010806400 A CN202010806400 A CN 202010806400A CN 111822104 A CN111822104 A CN 111822104A
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CN
China
Prior art keywords
shell
fixed
feed hopper
grinding
vertical mill
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202010806400.7A
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Chinese (zh)
Inventor
赵俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Kisen International Engineering Co Ltd
Original Assignee
Nanjing Kisen International Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Kisen International Engineering Co Ltd filed Critical Nanjing Kisen International Engineering Co Ltd
Priority to CN202010806400.7A priority Critical patent/CN111822104A/en
Publication of CN111822104A publication Critical patent/CN111822104A/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/007—Mills with rollers pressed against a rotary horizontal disc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone
    • B02C23/32—Passing gas through crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C2015/008—Roller drive arrangements

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Abstract

The invention relates to an external circulation semi-final grinding vertical mill, which comprises a shell, a grinding disc, a vertical mill feeding pipe and a vertical mill discharging pipe, wherein the grinding disc is rotatably arranged at the bottom of the shell; the powder selecting component comprises a powder selecting machine air inlet, a first feed hopper, a second feed hopper, a feeding pipe, a powder selecting machine air outlet, a discharging pipe, a driving unit, a main shaft, a bracket, a support, moving blades and static blades; the first feed hopper is fixed inside the upper end of the shell, the bracket is fixed at an opening above the first feed hopper and positioned below the plurality of moving blades, and the feeding pipe is vertically fixed at an opening below the first feed hopper; the second feed hopper is arranged in the first feed hopper, and an upper opening of the second feed hopper is fixed on the lower side of the bracket and is arranged on the outer sides of the plurality of moving blades and the inner sides of the plurality of static blades; the vertical mill has a simple structure, the height and the occupied area are small, and the powder selecting assembly is arranged on the vertical mill shell, so that a frame does not need to be additionally built, and the construction cost is reduced; in addition, the energy consumption is also lower.

Description

External circulation semi-final grinding vertical mill
Technical Field
The invention relates to an external circulation semi-final powder grinding vertical mill.
Background
At present, cement plants mostly adopt an external circulation vertical mill or an internal circulation vertical mill to grind cement raw materials; the internal circulation vertical mill adopts an integrated form, has compact structure and small occupied space, can be arranged outside the existing frame or in an open building structure, is internally provided with hot air and has stronger drying capacity, but the materials in the mill are conveyed pneumatically and carry fine powder materials into the powder concentrator by nozzle air ring airflow, and the airflow air resistance is larger, so that the power consumption of a waste gas fan or a circulating fan of a system is higher, and further the energy consumption of a finished product of the system per unit is higher; the internal materials of the external circulation vertical mill are not conveyed pneumatically, so that the energy consumption is low, but a frame is required to be independently built, the height and the occupied area are large, and the initial construction cost is high; therefore, further improvements are awaited.
Disclosure of Invention
In view of the current situation of the prior art, the technical problem to be solved by the invention is to provide an external circulation semi-final grinding vertical mill which has the advantages of simple structure, small height and occupied area, low construction cost and low energy consumption.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a half finish grinding of extrinsic cycle grinds immediately, includes casing, rotatable mill of locating the casing bottom, alternates and locate the upright mill inlet pipe of casing upper end and alternate the upright mill discharging pipe of locating casing bottom one side, its characterized in that: the powder selecting component comprises a powder selecting machine air inlet, a first feed hopper, a second feed hopper, a feeding pipe, a powder selecting machine air outlet, a discharging pipe, a driving unit, a main shaft, a bracket, a support, moving blades and static blades; the air outlet of the powder concentrator is fixed at the upper end of the shell and is communicated with the interior of the shell, the main shaft is vertically and rotatably inserted into the air outlet of the powder concentrator, the moving blades comprise a plurality of moving blades, the moving blades are fixed at the lower end of the main shaft at equal angles along the circumferential direction and are all arranged in the upper end of the shell, the first feed hopper is fixed in the upper end of the shell, the bracket is fixed at an upper opening of the first feed hopper and is positioned below the moving blades, and the feeding pipe is vertically fixed at a lower opening of the first feed hopper; the air inlet of the powder concentrator is transversely and alternately fixed on one side of the upper end of the shell and communicated with the inside of the shell; the inner end of the air inlet of the powder concentrator is arranged between the bracket and the inner wall of the upper end of the shell; one end of the discharge pipe is fixed on one side of the bottom of the second feed hopper and is communicated with the inside of the second feed hopper, the other end of the discharge pipe obliquely and downwards penetrates through the shell, is fixed and extends out of the shell, and the driving unit is fixed above the shell through a support, is connected with the upper end of the main shaft and can drive the main shaft to rotate; the inner end of the feeding pipe of the vertical mill is obliquely fixed at one side of an opening below the first feeding hopper and is communicated with the inside of the feeding pipe.
Preferably, the lower end edge of the grinding disc is further fixed with a plurality of scraping plates which are distributed at equal angles along the circumferential direction, and the lower sides of the scraping plates are matched with the discharge port of the vertical mill.
Preferably, a main speed reducer is further arranged below the shell, an output shaft of the main speed reducer is connected with the grinding disc and can drive the grinding disc to rotate, a main motor is further arranged on one side of the main speed reducer, and a rotating shaft of the main motor is connected with an input shaft of the main speed reducer.
Preferably, the grinding roller assembly further comprises a grinding roller assembly, wherein the grinding roller assembly comprises a rack, a hydraulic cylinder and a grinding roller rocker arm assembly, the rack is arranged on the other side of the main speed reducer, the grinding roller rocker arm assembly is rotatably arranged at the upper end of the rack, the fixed end of the hydraulic cylinder is rotatably connected to the rack, and the telescopic end of the hydraulic cylinder is obliquely and upwardly arranged and rotatably connected to the lower end of the grinding roller rocker arm assembly; the upper end of the grinding roller rocker arm assembly extends into the shell and is tightly pressed on one side above the grinding disc.
Compared with the prior art, the invention has the advantages that: the vertical mill has a simple structure, the height and the occupied area are small, and the powder selecting assembly is arranged on the vertical mill shell, so that a frame does not need to be additionally built, and the construction cost is reduced; in addition, although the invention drives the material to feed by wind power, the air flow resistance is smaller, so the energy consumption is lower.
Drawings
FIG. 1 is a front view structural diagram of the present invention.
Detailed Description
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the invention have been omitted.
As shown in fig. 1, an external circulation semi-finish grinding vertical mill comprises a shell 4, a grinding disc 12 rotatably arranged at the bottom of the shell 4, a vertical mill feeding pipe 3 inserted at the upper end of the shell 4 and a vertical mill discharging pipe 10 inserted at one side of the bottom of the shell 4; the powder selecting component comprises a powder selecting machine air inlet 14, a first feed hopper 21, a second feed hopper 22, a feeding pipe 20, a powder selecting machine air outlet 1, a discharging pipe 13, a driving unit 16, a main shaft 17, a bracket 18, a support 19, moving blades 15 and static blades 2; the air outlet 1 of the powder concentrator is fixed at the upper end of the shell 4 and is communicated with the inside of the shell 4, the main shaft 17 is vertically and rotatably inserted into the air outlet 1 of the powder concentrator, the moving blades 15 comprise a plurality of moving blades 15, the moving blades 15 are fixed at the lower end of the main shaft 17 at equal angles along the circumferential direction and are all arranged inside the upper end of the shell 4, the first feed hopper 21 is fixed inside the upper end of the shell 4, the bracket 18 is fixed at an upper opening of the first feed hopper 21 and is positioned below the moving blades 15, and the feeding pipe 20 is vertically fixed at a lower opening of the first feed hopper 21; the fixed blades 2 comprise a plurality of fixed blades 2 which are fixed between the bracket 18 and the inner wall of the upper end of the shell 4 at equal angles along the circumferential direction and are surrounded outside the plurality of moving blades 15, the second feed hopper 22 is arranged in the first feed hopper 21, the upper opening of the second feed hopper 22 is fixed at the lower side of the bracket 18 and is arranged at the outer side of the plurality of moving blades 15 and the inner side of the plurality of fixed blades 2, and the powder concentrator air inlet 14 is transversely inserted and fixed at one side of the upper end of the shell 4 and is communicated with the inside of the shell 4; the inner end of the air inlet 14 of the powder concentrator is arranged between the bracket 18 and the inner wall of the upper end of the shell 4; one end of the discharge pipe 13 is fixed at one side of the bottom of the second feed hopper 22 and is communicated with the inside of the second feed hopper 22, the other end of the discharge pipe 13 obliquely and downwards penetrates through the shell 4 and is fixed and extends out of the shell 4, and the driving unit 16 is fixed above the shell 4 through a support 19 and is connected with the upper end of the main shaft 17 and can drive the main shaft 17 to rotate; the inner end of the vertical mill feeding pipe 3 is obliquely fixed at one side of the opening below the first feeding hopper 21 and is communicated with the interior of the feeding pipe 20.
The lower end edge of the grinding disc 12 is also fixed with a plurality of scraping plates 11 which are distributed at equal angles along the circumferential direction, and the lower sides of the scraping plates 11 are matched with the vertical grinding discharge pipe 10.
A main speed reducer 8 is arranged below the shell 4, an output shaft of the main speed reducer 8 is connected with the grinding disc 12 and can drive the grinding disc 12 to rotate, a main motor 9 is arranged on one side of the main speed reducer 8, and a rotating shaft of the main motor 9 is connected with an input shaft of the main speed reducer 8.
An external circulation semi-final grinding vertical mill also comprises a grinding roller component, wherein the grinding roller component comprises a rack 7, a hydraulic cylinder 6 and a grinding roller rocker arm assembly 5, the rack 7 is arranged at the other side of a main speed reducer 8, the grinding roller rocker arm assembly 5 is rotatably arranged at the upper end of the rack 7, the fixed end of the hydraulic cylinder 6 is rotatably connected to the rack 7, and the telescopic end of the hydraulic cylinder 6 is obliquely and upwards arranged and rotatably connected to the lower end of the grinding roller rocker arm assembly 5; the upper end of the grinding roller rocker arm assembly 5 extends into the shell 4 and is pressed on one side above the grinding disc 12.
The working principle is as follows: the main motor 9 drives the grinding disc 12 to rotate in the shell 4 through the main speed reducer 8, when materials are fed into the first feed hopper 21 through the vertical grinding feed pipe 3 and fall onto the grinding disc 12 through the feed pipe 20, the materials can rotate along with the grinding disc 12, under the action of centrifugal force, the materials are thrown to the lower part of the grinding roller rocker arm assembly 5 to be ground, and the ground materials are thrown to the bottom of the shell 4 and are discharged outwards through the vertical grinding discharge pipe 10 under the driving of the plurality of scraping plates 11 and enter the V-shaped static powder concentrator to be roughly sorted.
The roughly sorted materials come out from a V-shaped static powder concentrator along with air to form dust-containing air, the materials in the dust-containing air are material particles below 2mm, the dust-containing air is fed above a first feed hopper 21 through an air inlet 14 of the powder concentrator, a driving unit 16 drives a plurality of moving blades 15 to rotate by means of a main shaft 17, the dust-containing air flows through a plurality of static blades 2 and then contacts with the moving blades 15, the dust-containing air is discharged outwards through an air outlet 1 of the powder concentrator under the drive of the moving blades 15, the materials discharged from the air outlet 1 of the powder concentrator are qualified fine powder, and the fine powder can be directly collected and collected into a finished product warehouse; the unqualified coarse powder outside the plurality of stationary blades 2 falls into the first feed hopper 21 due to gravity and is mixed with new materials which are not ground, and then the coarse powder returns to the grinding disc 12 through the feed pipe 20 to be continuously ground; the unqualified coarse powder inside the plurality of stationary blades 2 falls into the second feeding hopper 22 due to gravity and enters subsequent grinding equipment (such as a ball mill or a roller press) for continuous grinding through the discharging pipe 13, so as to form a cycle.
The powder selecting assembly is simple in structure, small in height and occupied area, and the powder selecting assembly is arranged on the shell 4, so that a frame does not need to be additionally built, and the construction cost is reduced; in addition, although the invention drives the material to feed by wind power, the air flow resistance is smaller, so the energy consumption is lower.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (4)

1. The utility model provides a half finish grinding of extrinsic cycle grinds immediately, includes casing, rotatable mill of locating the casing bottom, alternates and locate the upright mill inlet pipe of casing upper end and alternate the upright mill discharging pipe of locating casing bottom one side, its characterized in that: the powder selecting component comprises a powder selecting machine air inlet, a first feed hopper, a second feed hopper, a feeding pipe, a powder selecting machine air outlet, a discharging pipe, a driving unit, a main shaft, a bracket, a support, moving blades and static blades; the air outlet of the powder concentrator is fixed at the upper end of the shell and is communicated with the interior of the shell, the main shaft is vertically and rotatably inserted into the air outlet of the powder concentrator, the moving blades comprise a plurality of moving blades, the moving blades are fixed at the lower end of the main shaft at equal angles along the circumferential direction and are all arranged in the upper end of the shell, the first feed hopper is fixed in the upper end of the shell, the bracket is fixed at an upper opening of the first feed hopper and is positioned below the moving blades, and the feeding pipe is vertically fixed at a lower opening of the first feed hopper; the air inlet of the powder concentrator is transversely and alternately fixed on one side of the upper end of the shell and communicated with the inside of the shell; the inner end of the air inlet of the powder concentrator is arranged between the bracket and the inner wall of the upper end of the shell; one end of the discharge pipe is fixed on one side of the bottom of the second feed hopper and is communicated with the inside of the second feed hopper, the other end of the discharge pipe obliquely and downwards penetrates through the shell, is fixed and extends out of the shell, and the driving unit is fixed above the shell through a support, is connected with the upper end of the main shaft and can drive the main shaft to rotate; the inner end of the feeding pipe of the vertical mill is obliquely fixed at one side of an opening below the first feeding hopper and is communicated with the inside of the feeding pipe.
2. The external circulation semi-final mill according to claim 1, characterized in that: the lower extreme edge of mill still is fixed with a plurality of scrapes the flitch along angular distribution such as circumferencial direction, and is a plurality of the downside of scraping the flitch all mutually supports with the vertical mill discharge gate.
3. The external circulation semi-final mill according to claim 1, characterized in that: the grinding disc grinding machine is characterized in that a main speed reducer is further arranged below the shell, an output shaft of the main speed reducer is connected with the grinding disc and can drive the grinding disc to rotate, a main motor is further arranged on one side of the main speed reducer, and a rotating shaft of the main motor is connected with an input shaft of the main speed reducer.
4. The external circulation semi-final mill according to claim 1, characterized in that: the grinding roller assembly comprises a rack, a hydraulic cylinder and a grinding roller rocker arm assembly, the rack is arranged on the other side of the main speed reducer, the grinding roller rocker arm assembly is rotatably arranged at the upper end of the rack, the fixed end of the hydraulic cylinder is rotatably connected to the rack, and the telescopic end of the hydraulic cylinder is obliquely and upwards arranged and rotatably connected to the lower end of the grinding roller rocker arm assembly; the upper end of the grinding roller rocker arm assembly extends into the shell and is tightly pressed on one side above the grinding disc.
CN202010806400.7A 2020-08-12 2020-08-12 External circulation semi-final grinding vertical mill Withdrawn CN111822104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010806400.7A CN111822104A (en) 2020-08-12 2020-08-12 External circulation semi-final grinding vertical mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010806400.7A CN111822104A (en) 2020-08-12 2020-08-12 External circulation semi-final grinding vertical mill

Publications (1)

Publication Number Publication Date
CN111822104A true CN111822104A (en) 2020-10-27

Family

ID=72919135

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010806400.7A Withdrawn CN111822104A (en) 2020-08-12 2020-08-12 External circulation semi-final grinding vertical mill

Country Status (1)

Country Link
CN (1) CN111822104A (en)

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Application publication date: 20201027

WW01 Invention patent application withdrawn after publication