CN210522660U

CN210522660U - Vertical mill

Info

Publication number: CN210522660U
Application number: CN201921216909.5U
Authority: CN
Inventors: 周贵鸿
Original assignee: Guangzhou Taike Energy Conservation And Environmental Protection Technology Co ltd
Current assignee: Guangzhou Taike Energy Conservation And Environmental Protection Technology Co ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-05-15
Anticipated expiration: 2029-07-30

Abstract

The utility model relates to a vertical mill, including mill and the first flitch of scraping, the first flitch of scraping is installed on the mill, and the first flitch epirelief of scraping is equipped with scrapes the tooth, and the lower terminal surface of scraping the tooth stretches out the first lower terminal surface of scraping the flitch, the utility model discloses an add on the first flitch of scraping and scrape the tooth to scrape the deposit material in the wind channel through scraping the tooth and cut, scrape the deposit material that is cut into the fritter with massive deposit material, and can also enough material harrow pine activation, make deposit material can not be together fixed with the bottom in wind channel, reduce the closely knit degree of material, thereby make the first flitch of scraping be difficult by wearing and tearing scraping the material after cutting the activation, life is longer, thereby keeps the wind channel unblocked, reduces the system resistance, reduces power consumption.

Description

Vertical mill

Technical Field

The utility model belongs to the grinding machine field, in particular to found mill.

Background

The vertical mill is a grinding machine for grinding materials by utilizing a material bed grinding principle, in the cement production industry, the common vertical mill is an air sweeping type mill, the materials to be ground are uniformly scattered on a grinding disc, and are ground by grinding through a grinding roller, the materials are thrown out of the edge of the grinding disc under the action of centrifugal force of the grinding disc and are sunk to a nozzle ring, the ground materials are blown up and scattered through high-speed air in an air duct, and metal and heavy ores are sunk to the lower part of the nozzle ring and are pushed out of a slag discharge port or a discharge port through a scraping plate to be discharged. The fine powder is carried to the upper part of the vertical mill, the fine powder is separated by a separator, the finished product enters a dust collector along with gas to be collected, and the coarse powder is recycled. After the coarse powder and coarse particles are thrown up by high-speed wind, the coarse powder and the coarse particles lose support along with the reduction of the wind speed along with the distance from the grinding disc, settle on the disc surface of the grinding disc, and enter a press grinding track by virtue of centrifugal force to perform a new round of circulation.

In the grinding process, a large amount of materials which are difficult to grind and large in particle size are deposited in the air channel, various deposited materials with different sizes can be formed, the deposited materials are scraped and discharged through a square metal plate by a traditional scraping plate, the deposited materials are pushed to a slag discharge port or a discharge port by the whole material facing surface of the scraping plate, the friction force borne by the scraping plate is large due to the large contact area, so that the scraping plate in the air channel is quickly abraded, some manufacturers almost need to replace the scraping plate every month, and after the scraping plate is abraded, the deposited materials in the air channel can be further increased, so that the ventilation area of the air channel is reduced, and the resistance of the system is increased.

Therefore, a novel vertical mill is urgently needed, and a scraping plate of the vertical mill is not easy to wear and has a longer service life.

SUMMERY OF THE UTILITY MODEL

The utility model provides an upright mill to solve among the prior art and found scraping the flitch wearing and tearing very fast in the mill, the flitch of scraping after the wearing and tearing can lead to wind channel deposit material to increase, and wind channel draught area reduces, and system resistance increases, makes the technical problem who scrapes the flitch and need often change.

The utility model discloses a following technical scheme realizes:

the utility model provides a vertical mill, includes the mill and first flitch of scraping, first flitch of scraping is installed on the mill, first flitch epirelief of scraping is equipped with scrapes the tooth, the lower terminal surface of scraping the tooth stretches out the lower terminal surface of first flitch of scraping.

Further, for better realization the utility model discloses, the quantity of scraping the tooth is a plurality of, and is a plurality of scrape the even spaced setting of tooth and be in first scrape on the flitch and a plurality of the lower terminal surface of scraping the tooth all is located same level.

Further, for better realization the utility model discloses, it is a plurality of scrape the vertical protruding of tooth and locate first scrape on the material level that meets of flitch just the lower extreme of scraping the tooth stretches out first lower terminal surface of scraping the flitch.

Further, for better realization the utility model discloses, scrape the tooth with first flitch welding of scraping.

Further, for better realization the utility model discloses, it is a plurality of scrape the tooth and equally divide and do not dismantle fixed mounting through at least one first bolt on the first flitch of scraping.

Further, for better realization the utility model discloses, still include the clamp plate, it is a plurality of scrape the equal rigid coupling in upper end of tooth in on the clamp plate, the clamp plate with the first upper end detachable fixed connection who scrapes the flitch just scrape the tooth with the first flitch laminating of scraping.

Further, for better realization the utility model discloses, the lower extreme of scraping the tooth is equipped with the chamfer, the chamfer is located and keeps away from first one side of scraping the flitch.

Further, for better realization the utility model discloses, the quantity of first flitch of scraping is the polylith, the polylith the first even circumference of scraping the flitch is installed on the mill.

Further, for better realization the utility model discloses, every first scrape on the flitch adjacent two scrape and form the slot between the tooth, adjacent two first scrape the flitch be A board and B board respectively, the slot on the A board with scrape on the B board the tooth and align, the slot on the B board with scrape on the A board the tooth and align, the slot equals scrape the tooth width.

Further, for better realization the utility model discloses, still include the polylith second and scrape flitch, the polylith the second scrape the even circumference of flitch install in on the mill and with the polylith first flitch interval of scraping sets up in turn, the second scrape the lower terminal surface of flitch with the lower terminal surface of scraping the tooth is located same level.

The utility model discloses compare in prior art and have following beneficial effect:

the utility model adds scraping teeth on the existing first scraping plate in the vertical mill, and the lower end surface of the scraping teeth extends out of the lower end surface of the first scraping plate, the deposited material in the air duct is scraped and cut by the scraping teeth, the scraped and cut material is pushed and discharged to the slag discharge port of the air duct by the first scraping plate, because the width of the scraping teeth 41 is less than the width of the first scraping plate 4, compared with the first scraping plate 4, the deposited material is directly scraped and cut, the contact area of the scraping teeth 41 and the deposited material is smaller, under the condition that the thrust generated by the rotation of the grinding disc is unchanged, the scraping cutting force when the scraping teeth 41 with smaller width scrape and cut the deposited material is larger, the deposited material can be easily scraped and cut, the massive deposited material is scraped and cut into small deposited material, the compactness of the material is reduced, and the material can be loosened and activated, so that the deposited material can not be fixed with the bottom of the air duct, thereby can be easier scrape the sediment material arrange to arrange the discharge of sediment mouth department, consequently, the first flitch of scraping after having add the scraping tooth is difficult for being worn and torn, and life is longer to the draught area in increase wind channel keeps the wind channel unblocked, reduces system resistance then, reduces power consumption.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a first scraping plate and scraping teeth in the present invention;

fig. 2 is another schematic structural view of the first scraping plate and the scraping teeth of the present invention;

FIG. 3 is a schematic structural view of the vertical mill of the present invention;

FIG. 4 is a top view of the abrasive disc, first scraper plate and second scraper plate of FIG. 3;

fig. 5 is a schematic view of the installation of the scraping teeth in the a plate and the scraping teeth in the B plate in embodiment 4 of the present invention.

In the figure:

1-grinding disc; 11-scraping plate frame; 2-grinding roller; 3-an air duct shell; 4-a first scraper plate; 41-scraping teeth; 411-chamfering; 42-a first bolt; 43-a platen; 44-a second bolt; 5-a second scraper plate; 6-A plate, 61-A plate scraping teeth; 62-A board tooth seam; 7-B plate; 71-B plate scraping teeth; 72-B plate tooth seam.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The left, right, up, down, and the like directional concepts described in this embodiment are based on the left, right, up, down, and the like directional concepts shown in fig. 1, specifically, the left side shown in fig. 1 is left, the right side shown in fig. 1 is right, the upper side shown in fig. 1 is up, and the lower side shown in fig. 1 is down.

Example 1:

a vertical mill, as shown in fig. 1 to 5, comprises a grinding disc 1, a grinding roller 2, an air duct shell 3 and a first scraping plate 4, wherein the grinding roller 2 is positioned above the grinding disc 1, an air duct is formed between the grinding disc 1 and the air duct shell 3, and the bottom of the air duct shell 3 is provided with a slag discharge port; the first scraping plate 4 is fixedly connected with the grinding disc 1 through the scraping plate frame 11, the first scraping plate 4 is located in the air duct, scraping teeth 41 are convexly arranged on the first scraping plate 4, and the lower end surfaces of the scraping teeth 41 extend out of the lower end surface of the first scraping plate 4; the grinding disc 1, the grinding roller 2, the air duct shell 3 and the scraping plate 11 frame are all the prior art, and therefore detailed structures of the grinding disc, the grinding roller, the air duct shell and the scraping plate are not repeated.

First scraping plate 4 is the rectangle flat board, and when the mill rotated, first scraping plate 4 rotated along with the rotation of mill, consequently, first scraping plate 4 both sides face be respectively with 1 rotation direction of mill the same meet the charge level and with the mill rotation direction back of the body material face that carries on the back mutually, first scraping plate 4 the back of the body material face with scrape material grillage 11 through welding or bolted connection's mode fixed connection.

When the grinding disc rotates, the first scraping plate 4 rotates along with the rotation of the grinding disc 1, and the lower end surface of the scraping tooth 41 extends out of the lower end surface of the first scraping plate 4, so that the scraping tooth 41 can scrape and cut deposited materials in the air duct shell 3, the width of the scraping tooth 41 is smaller than that of the first scraping plate 4, compared with the case that the first scraping plate 4 directly scrapes and cuts the deposited materials, the contact area between the scraping tooth 41 and the deposited materials is smaller, under the condition that the thrust is unchanged, the scraping force of the scraping tooth 41 with the smaller width when scraping and cutting the deposited materials is larger, the deposited materials can be easily scraped and cut, large deposited materials are scraped and cut into small deposited materials, the compactness of the materials is reduced, and the materials can be raked loose and activated, so that the deposited materials cannot be fixed with the bottom of the air duct shell 3 together, and can be more easily scraped and discharged to a slag discharge port, after the scraping teeth 41 are additionally arranged, the abrasion degree of the first scraping plate 4 can be reduced, and the service life of the first scraping plate 4 is prolonged.

The quantity of the first scraping plates 4 is multiple, the multiple first scraping plates 4 are installed on the grinding disc 1 through the uniform circumference of the scraping frame 41 and located in the air duct, the lower end faces of the first scraping plates 4 are located at the same horizontal height, and the lower end faces of all the scraping teeth 41 on the first scraping plates 4 are located at the same horizontal height.

It is worth mentioning that the scraping teeth 41 and the first scraping plate 4 are made of metal materials with high wear resistance, and a wear-resistant layer is further deposited on the surfaces of the scraping teeth 41 and the first scraping plate 4, so as to further improve the wear resistance of the first scraping plate 4 and the scraping teeth 41.

Example 2:

this embodiment is a more specific implementation manner of embodiment 1, as shown in fig. 1, for better activating the deposition material, the number of the scraping teeth 41 is multiple, the multiple scraping teeth 41 are uniformly arranged on the first scraping plate 4 at intervals, and the lower end surfaces of the multiple scraping teeth 41 are located on the same horizontal plane, the multiple scraping teeth 41 can scrape and cut large deposition material into more and smaller deposition material, so that the first scraping plate 4 can more easily scrape and discharge the deposition material into the slag discharge opening.

The scraping teeth 41 are vertically and convexly arranged on the material facing surface of the first scraping plate 4, and the lower end surface of each scraping tooth 41 extends out of the lower end surface of the first scraping plate 4; the scraping teeth 41 are fixed on the material facing surface of the first scraping plate 4, so that even if the deposited material is accumulated to a position higher than the lower end surface of the first scraping plate 4, scraping cutting can be performed through the scraping teeth 41.

The lower end of each scraping tooth 41 and the position far away from the first scraping plate 4 are provided with a chamfer 411, and the chamfers 411 can help the scraping teeth 41 to cut into the deposited material, so that the scraping efficiency is further improved.

And, scrape tooth 41 and first scraping plate 4 welding or bolted connection, in this embodiment, a plurality of scrape tooth 41 and divide and all divide and to dismantle fixed mounting on first scraping plate 4 through at least one first bolt 42 respectively, in this embodiment, preferably, all vertical and spaced being equipped with two first through-holes on every scrapes tooth 41, be equipped with on the material facing surface of first scraping plate with every first through-hole one-to-one a plurality of first screw holes on every scrapes tooth, still include two first bolts 42, every first bolt 42 passes a first through-hole respectively and spiro union in the first screw hole that this first through-hole corresponds, adopt first bolt 42 will scrape tooth 41 fixed mounting on first scraping plate 4, when scraping tooth 41 wearing and tearing to needing to be changed, can dismantle the tooth 41 that scrapes that needs to be changed alone and change.

Example 3:

the present embodiment is another embodiment of embodiment 2, and in the present embodiment, as shown in fig. 2, the present embodiment further includes a pressing plate 43, the scraping teeth 41 and the first scraping plate 4 are not fixedly connected by the first bolts 42, but the upper ends of the scraping teeth 41 are fixedly connected to the pressing plate 43 so that the scraping teeth 41 and the pressing plate 43 form a whole, the pressing plate 43 is detachably fixed at the upper end of the first scraping plate 4 by at least one second bolt, and all the scraping teeth 41 are attached to the material facing surface of the first scraping plate 4 so that the first scraping plate 4 can provide a supporting force for the scraping teeth 41. In this embodiment, preferably, the upper end surface of the first scraping plate is provided with at least two second threaded holes, the pressing plate 43 is provided with second through holes corresponding to the second threaded holes, and the first scraping plate further includes two second bolts 44, and the second bolts 44 respectively penetrate through one second through hole and are screwed into the second threaded holes corresponding to the second through holes.

Through scraping tooth 41 and clamp plate 43 welding and being an overall structure, after scraping tooth 41 wearing and tearing, can dismantle second bolt 44 and take out clamp plate 43 and all scraping tooth 41 are whole to be changed, and need not be alone to scraping tooth 41 and carry out change one by one, change the more convenient and fast of maintenance, the remaining structure of this embodiment is the same with embodiment 2.

It is worth mentioning that the scraping teeth 41 are fixed to the pressing plate 43 by welding or bolting, and in this embodiment, the scraping teeth 41 are fixed to the pressing plate 43 by welding.

Example 4:

in this embodiment, it is preferable that a tooth gap is formed between two adjacent scraping teeth 41 on each first scraping plate 4, the width of the tooth gap on each first scraping plate 4 is smaller than or equal to the width of the scraping teeth 41, as shown in fig. 5, two adjacent first scraping plates 4 are respectively an a plate and a B plate, the rack on the a plate is the a plate scraping teeth 61, the rack on the a plate is the a plate tooth gap 62, the rack on the B plate is the B plate scraping teeth 71, the B plate tooth gap 72 is formed between two adjacent scraping teeth on the B plate, the a plate tooth gap 62 is aligned with the B plate scraping teeth 71, the a plate scraping teeth 61 are aligned with the B plate tooth gap 72, that is, the scraping track of the a plate scraping teeth 61 rotating with the grinding disc 1 is coincident with the scraping track of the B plate tooth gap 72 rotating with the grinding disc 1, the scraping track of the a plate tooth gap 62 rotating with the grinding disc 1 is coincident with the scraping track of the B scraping teeth 71 rotating with the grinding disc 1, this arrangement may allow the scraping tracks of the a-plate scraping teeth 61 and the B-plate scraping teeth 71 to completely cover the width of the first scraper plate 4, so that the first scraper plate 4 can completely scrape off the deposited material located below the first scraper plate 4 when rotating with the grinding disc 1.

Example 5:

the present embodiment is a more preferable embodiment of the above embodiment, wherein a plurality of second scraping plates 5 are further installed on the grinding disc 1 of the vertical mill, the plurality of second scraping plates 5 are installed on the grinding disc 1 through the scraping plate frame 11, and are alternately arranged at intervals with the plurality of first scraping plates 4, and the lower end surfaces of the second scraping plates 5 and the lower end surfaces of the scraping teeth 41 on the first scraping plates 4 are located at the same horizontal height.

The second scraping plate 5 is a rectangular flat plate, and the sediment materials raked by the scraping teeth 41 of the first scraping plate 4 are pushed to a slag discharge port on the air duct shell 3 through the second scraping plate 5 to be discharged.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The vertical mill is characterized by comprising a grinding disc and a first scraping plate, wherein the first scraping plate is arranged on the grinding disc, scraping teeth are arranged on the first scraping plate in an upward protruding mode, and the lower end face of each scraping tooth extends out of the lower end face of the first scraping plate.

2. A vertical mill according to claim 1, wherein the scraping teeth are provided in a plurality, the scraping teeth are evenly spaced on the first scraping plate, and the lower end surfaces of the scraping teeth are all located at the same horizontal height.

3. A vertical mill according to claim 2, wherein a plurality of scraping teeth are vertically protruded on the material facing surface of the first scraping plate.

4. A vertical mill according to claim 3, wherein: the scraping teeth are welded with the first scraping plate.

5. A vertical mill according to claim 3, wherein: the scraping teeth are detachably and fixedly arranged on the first scraping plate through at least one first bolt respectively.

6. A vertical mill according to claim 3, wherein: the scraper is characterized by further comprising a pressing plate, wherein the upper ends of the scraping teeth are fixedly connected to the pressing plate, the pressing plate is detachably and fixedly connected with the upper end of the first scraping plate, and the scraping teeth are attached to the first scraping plate.

7. A vertical mill according to claim 1, wherein: the lower end of the scraping teeth is provided with a chamfer which is positioned at one side far away from the first scraping plate.

8. A vertical mill according to any one of claims 1 to 7, wherein the number of said first scraping plates is plural, and plural said first scraping plates are uniformly circumferentially mounted on said grinding disc.

9. A vertical mill according to claim 8, wherein a tooth gap is formed between two adjacent scraping teeth on each first scraping plate, the adjacent two first scraping plates are respectively an A plate and a B plate, the tooth gap on the A plate is aligned with the scraping teeth on the B plate, the tooth gap on the B plate is aligned with the scraping teeth on the A plate, and the tooth gap is equal to the width of the scraping teeth.

10. The vertical mill according to claim 8, further comprising a plurality of second scraping plates circumferentially and uniformly mounted on the grinding disc and alternately spaced from the plurality of first scraping plates, wherein lower end surfaces of the second scraping plates and lower end surfaces of the scraping teeth are located at the same level.