CN111822103A - External circulation final grinding vertical mill - Google Patents

External circulation final grinding vertical mill Download PDF

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Publication number
CN111822103A
CN111822103A CN202010805903.2A CN202010805903A CN111822103A CN 111822103 A CN111822103 A CN 111822103A CN 202010805903 A CN202010805903 A CN 202010805903A CN 111822103 A CN111822103 A CN 111822103A
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CN
China
Prior art keywords
shell
fixed
grinding
vertical mill
powder
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Withdrawn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
CN202010805903.2A
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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 CN202010805903.2A priority Critical patent/CN111822103A/en
Publication of CN111822103A publication Critical patent/CN111822103A/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Withdrawn legal-status Critical Current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 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 feed hopper, a feed pipe, a powder selecting machine air outlet, 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 plurality of 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, and the feed hopper is fixed in the upper end of the shell; the powder selecting assembly is arranged on the shell, and a frame does not need to be additionally built, so that the construction cost is reduced; in addition, the energy consumption is also lower.

Description

External circulation final grinding vertical mill
Technical Field
The invention relates to an external circulation final 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 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 an outer loop finish grinding vertical mill, includes casing, the rotatable mill of locating the casing bottom, alternates and locate the vertical mill inlet pipe of casing upper end and alternate the vertical 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 feed hopper, a feed pipe, a powder selecting machine air outlet, 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 feed hopper is fixed in the upper end of the shell, the bracket is fixed at an upper opening of the feed hopper and positioned below the moving blades, and the feed pipe is vertically fixed at a lower opening of the feed hopper; the powder concentrator comprises a bracket, a shell, a powder concentrator air inlet, a plurality of static blades and a plurality of air outlets, wherein the static blades are fixed between the bracket and the inner wall of the upper end of the shell at equal angles along the circumferential direction and surround the plurality of dynamic blades; 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; the driving unit is fixed above the shell through a bracket, 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 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 plurality of scraping plates are matched with the discharge pipe 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 powder selecting assembly is arranged on the shell, and a frame does not need to be additionally built, so that 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 finish grinding vertical mill comprises a shell 4, a grinding disc 5 which is rotatably arranged at the bottom of the shell 4, a vertical mill feeding pipe 3 which is inserted at the upper end of the shell 4 and a vertical mill discharging pipe 7 which is inserted at one side of the bottom of the shell 4; the powder selecting component comprises a powder selecting machine air inlet 14, a feed hopper 20, a feed pipe 13, a powder selecting machine air outlet 1, 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 interior of the shell 4, the main shaft 17 is vertically and rotatably inserted into the air outlet 1 of the powder concentrator, the plurality of moving blades 15 are fixed at the lower end of the main shaft 17 at equal angles along the circumferential direction and are arranged in the upper end of the shell 4, the feed hopper 20 is fixed in the upper end of the shell 4, the bracket 18 is fixed at an upper opening of the feed hopper 20 and is positioned below the plurality of moving blades 15, and the feed pipe 13 is vertically fixed at a lower opening of the feed hopper 20; 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 surround the plurality of moving blades 15, and the air inlet 14 of the powder concentrator is transversely inserted and fixed on one side of the upper end of the shell 4 and 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; the driving unit 16 is fixed above the housing 4 by a bracket 19 and connected to the upper end of the main shaft 17 and can rotate the main shaft 17.
The inner end of the feeding pipe 3 of the vertical mill is obliquely fixed at one side of the lower opening of the feeding hopper 20 and is communicated with the interior of the feeding pipe 13.
The lower extreme edge of mill 5 still is fixed with a plurality of scrapes flitch 6 that angular distribution such as along the circumferencial direction, and the downside of a plurality of scrapes flitch 6 all mutually supports with founding mill discharging pipe 7.
A main speed reducer 9 is further arranged below the shell 4, an output shaft of the main speed reducer 9 is connected with the grinding disc 5 and can drive the grinding disc 5 to rotate, a main motor 8 is further arranged on one side of the main speed reducer 9, and a rotating shaft of the main motor 8 is connected with an input shaft of the main speed reducer 9.
An external circulation finish grinding vertical mill also comprises a grinding roller component, wherein the grinding roller component comprises a rack 10, a hydraulic cylinder 11 and a grinding roller rocker arm assembly 12, the rack 10 is arranged at the other side of a main speed reducer 9, the grinding roller rocker arm assembly 12 is rotatably arranged at the upper end of the rack 10, the fixed end of the hydraulic cylinder 11 is rotatably connected to the rack 10, and the telescopic end of the hydraulic cylinder 11 is obliquely and upwards arranged and rotatably connected to the lower end of the grinding roller rocker arm assembly 12; the upper end of the grinding roller rocker arm assembly 12 extends into the shell 4 and is pressed on one side above the grinding disc 5.
The working principle is as follows: the main motor 8 drives the grinding disc 5 to rotate in the shell 4 through the main speed reducer 9, when materials are fed into the feed hopper 20 through the vertical grinding feed pipe 3 and fall onto the grinding disc 5 through the feed pipe 13, the materials can rotate along with the grinding disc 5, under the action of centrifugal force, the materials are thrown to the lower part of the grinding roller rocker arm assembly 12 to be ground, and the ground materials are thrown to the bottom of the shell 4, are driven by the scraping plates 6 to be discharged outwards through the vertical grinding discharge pipe 7 and enter the V-shaped static powder concentrator to be roughly sorted.
The roughly separated materials are discharged from the V-shaped static powder concentrator together with air to form dust-containing air, the materials in the dust-containing air are material particles with the particle size below 2mm, the dust-containing air is fed above a feed hopper 20 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 can be directly collected and collected into a finished product warehouse, the unqualified coarse powder falls into the feed hopper 20 due to gravity and then returns to a grinding disc 5 through a feed pipe 13 to be ground continuously, and a circulation is formed.
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 an outer loop finish grinding vertical mill, includes casing, the rotatable mill of locating the casing bottom, alternates and locate the vertical mill inlet pipe of casing upper end and alternate the vertical 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 feed hopper, a feed pipe, a powder selecting machine air outlet, 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 feed hopper is fixed in the upper end of the shell, the bracket is fixed at an upper opening of the feed hopper and positioned below the moving blades, and the feed pipe is vertically fixed at a lower opening of the feed hopper; the powder concentrator comprises a bracket, a shell, a powder concentrator air inlet, a plurality of static blades and a plurality of air outlets, wherein the static blades are fixed between the bracket and the inner wall of the upper end of the shell at equal angles along the circumferential direction and surround the plurality of dynamic blades; 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; the driving unit is fixed above the shell through a bracket, 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 feeding hopper and is communicated with the inside of the feeding pipe.
2. The external circulation finish mill according to claim 1, characterized in that: the lower extreme edge of mill still is fixed with a plurality of scrapes the flitch that angular distribution such as along the circumferencial direction, and is a plurality of the downside of scraping the flitch all mutually supports with founding the mill discharging pipe.
3. The external circulation finish 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 finish 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.
CN202010805903.2A 2020-08-12 2020-08-12 External circulation final grinding vertical mill Withdrawn CN111822103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010805903.2A CN111822103A (en) 2020-08-12 2020-08-12 External circulation final grinding vertical mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010805903.2A CN111822103A (en) 2020-08-12 2020-08-12 External circulation final grinding vertical mill

Publications (1)

Publication Number Publication Date
CN111822103A true CN111822103A (en) 2020-10-27

Family

ID=72917783

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010805903.2A Withdrawn CN111822103A (en) 2020-08-12 2020-08-12 External circulation final grinding vertical mill

Country Status (1)

Country Link
CN (1) CN111822103A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112871321A (en) * 2021-01-29 2021-06-01 张玉彬 Vertical desulfurization roller mill for mine
CN114345454A (en) * 2021-12-01 2022-04-15 中材（天津）粉体技术装备有限公司 High-efficiency low-resistance vertical roller mill
CN114558665A (en) * 2022-03-02 2022-05-31 南京凯盛国际工程有限公司 External circulation vertical mill capable of detecting abrasion loss of grinding roller on line and automatically adjusting grinding roller and operation method thereof
CN116273335A (en) * 2023-03-10 2023-06-23 江苏新业重工股份有限公司 Slag vertical mill device for mineral powder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112871321A (en) * 2021-01-29 2021-06-01 张玉彬 Vertical desulfurization roller mill for mine
CN114345454A (en) * 2021-12-01 2022-04-15 中材（天津）粉体技术装备有限公司 High-efficiency low-resistance vertical roller mill
CN114558665A (en) * 2022-03-02 2022-05-31 南京凯盛国际工程有限公司 External circulation vertical mill capable of detecting abrasion loss of grinding roller on line and automatically adjusting grinding roller and operation method thereof
CN116273335A (en) * 2023-03-10 2023-06-23 江苏新业重工股份有限公司 Slag vertical mill device for mineral powder
CN116273335B (en) * 2023-03-10 2023-12-19 江苏新业重工股份有限公司 Slag vertical mill device for mineral powder

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Application publication date: 20201027