CN210146080U

CN210146080U - Coal pulverizer and scraper assembly thereof

Info

Publication number: CN210146080U
Application number: CN201920738976.7U
Authority: CN
Inventors: 季广辉; 刘伟; 许占谋
Original assignee: China Shenhua Energy Co Ltd; Beijing Guohua Electric Power Co Ltd; Hebei Guohua Dingzhou Power Generation Co Ltd
Current assignee: Guoneng Hebei Dingzhou Power Generation Co ltd; National Energy Group Guohua Power Co ltd; China Shenhua Energy Co Ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2020-03-17
Anticipated expiration: 2029-05-21

Abstract

The utility model relates to a field of coal pulverizer discloses a coal pulverizer and scraper blade subassembly thereof, the scraper blade subassembly includes base (1), scraper blade spare (2) and round pin axle member (3), base (1) is including parallel last backup pad (11) and bottom suspension fagging (12), scraper blade spare (2) including articulated portion (21) and connect in body board (22) of articulated portion (21), round pin axle member (3) are including passing go up backup pad (11) bottom suspension fagging (12) reach axis body (31) of articulated portion (21) and connect in head (32) of axis body (31), head (32) backstop in go up the upper surface of backup pad (11). Through the technical scheme, the pin shaft with the head can be stopped on the base and does not sink, so that the scraper plate hinged to the base through the pin shaft can not sink gradually in the use process, the maintenance time is saved, and the working efficiency is improved.

Description

Coal pulverizer and scraper assembly thereof

Technical Field

The utility model relates to a coal pulverizer field specifically relates to the scraper blade subassembly of coal pulverizer to relate to a coal pulverizer.

Background

The coal mill is a bowl type medium speed coal mill, and the milling part of the coal mill consists of a rotating milling bowl and three fixed and rotatable grinding rollers rolling along the milling bowl. Raw coal falls onto the grinding bowl from a central coal dropping pipe of the coal mill and is ground by the grinding roller. The heavy pebble coal, pyrite, iron blocks and the like which are difficult to crush and cannot be blown up by primary air fall into the primary air chamber through the rotary impeller device, and are scraped into the slag discharging box by the scraper device to be cleaned at regular time.

The existing scraper is hinged to the base through a pin, and under the downward pressing action of coal in the coal mill, pressure borne by the scraper is transmitted to the pin part, so that the pin easily sinks, and the scraper falls off.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a scraper blade subassembly of coal pulverizer to solve and scrape the problem that partial easy sinking of board.

The utility model provides a scraper blade subassembly of coal pulverizer, a serial communication port, the scraper blade subassembly includes base, scraper blade spare and round pin axle piece, the base includes parallel last backup pad and bottom suspension fagging, scraper blade spare include the centre gripping in go up the backup pad with articulated portion between the bottom suspension fagging and connect in the body board of articulated portion, round pin axle piece is including passing go up the backup pad the bottom suspension fagging reaches the axis body of articulated portion and connect in the head of axis body upper end, the head backstop in go up the upper surface of backup pad.

Optionally, the upper surface of the upper supporting plate is provided with a protection plate buckled on the head, the protection plate is in a shape that the lower surface is sunken upwards, and the peripheral part of the protection plate is attached to the upper supporting plate.

Alternatively, the peripheral portion of the protection plate is screwed to the upper support plate by a bolt.

Optionally, the scraper member includes ribs disposed on a back side of the body plate.

Optionally, the back of the body plate is provided with a plurality of ribs arranged in parallel along the vertical direction, and the ribs are perpendicular to the body plate.

Optionally, the scraper member comprises a wear plate snugly disposed on the front face of the body plate.

Alternatively, the wear plate may be removably bolted to the body plate by bolts.

Optionally, the base includes a connecting plate connected between the upper supporting plate and the lower supporting plate, and the connecting plate is provided with a mounting hole.

Optionally, the base includes a limiting plate connected between the upper support plate and the lower support plate, and the scraper member is capable of pivoting around the pin member within a 90-degree range between the connecting plate and the limiting plate.

Additionally, the utility model also provides a coal pulverizer, wherein, the coal pulverizer includes above scheme coal pulverizer's scraper blade subassembly.

Through the technical scheme, the pin shaft with the head can be stopped on the base and does not sink, so that the scraper plate hinged to the base through the pin shaft can not sink gradually in the use process, the maintenance time is saved, and the working efficiency is improved.

Drawings

FIG. 1 is a top view of a squeegee assembly according to an embodiment of the present invention;

fig. 2 is a front view of a squeegee assembly according to an embodiment of the present invention.

Description of the reference numerals

1 base 2 scraper

3 Pin shaft part

11 upper support plate and 12 lower support plate

13 protective plate 14 connecting plate

15 limiting plate

21 hinge part 22 body plate

23 rib 24 wear plate

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

The utility model provides a scraper blade subassembly of coal pulverizer, wherein, the scraper blade subassembly includes base 1, scrapes plate member 2 and round pin shaft member 3, base 1 includes parallel last backup pad 11 and bottom suspension fagging 12, scrape plate member 2 include the centre gripping in go up backup pad 11 with articulated portion 21 between the bottom suspension fagging 12 and connect in articulated portion 21's body board 22, round pin shaft member 3 is including passing go up backup pad 11 bottom suspension fagging 12 reaches articulated portion 21's axis body 31 and connect in the head 32 of axis body 31 upper end, head 32 backstop in go up backup pad 11's upper surface.

The scraper component is arranged in a grinding bowl of the coal mill and positioned below the grinding roller, and can clean the bottom of the grinding bowl. The scraping plate member 2 comprises a hinge portion 21 and a body plate 22, the hinge portion 21 is hinged on the base 1 through a pin member 3, namely, the hinge portion 21 is positioned between the upper supporting plate 11 and the lower supporting plate 12, a shaft body 31 of the pin member 3 penetrates through the upper supporting plate 11, the hinge portion 21 and the lower supporting plate 12 from top to bottom, and a head portion 32 of the pin member 3 is positioned on the upper side of the upper supporting plate 11, so that the scraping plate member 2 can be prevented from moving downwards due to the fact that the pin member 3 moves downwards in the using process.

In addition, the upper surface of the upper support plate 11 is provided with a protection plate 13 buckled on the head part 32, the protection plate 13 is in a shape that the lower surface is concave upwards, and the peripheral part of the protection plate 13 is attached to the upper support plate 11. The head part 32 protrudes from the upper side of the upper support plate 11 and is easily impacted, rubbed and the like by external objects, therefore, the protection plate 13 is arranged on the upper surface of the upper support plate 11, and the protection plate 13 covers the head part 32, so that the head part 32 is prevented from directly contacting with coal in the coal mill, and the friction and the abrasion are reduced. Referring to fig. 2, the protection plate 13 has a shape depressed upward at the center, and the peripheral portion thereof is attached to the upper support plate 11 and the head portion 32 is received at the center.

Further, a peripheral portion of the protection plate 13 is screwed to the upper support plate 11 by a bolt. The protection plate 13 is detachably attached to the upper support plate 11 by means of bolt members, and when the wear of the protection plate 13 is large, the protection plate 13 can be detached and replaced with a new protection plate 13.

In addition, the blade member 2 includes a rib plate 23 provided on the rear surface of the body plate 22. The scraper component 2 can move along a specific direction, the surface deviating from the direction is the back surface of the body plate 22, and the rib plate 23 can enhance the rigidity of the body plate 22, so that the body plate 22 is not easy to bend and deform, and the cleaning effect of the body plate 22 is ensured.

Further, a plurality of ribs 23 are arranged in parallel in the vertical direction on the back of the body plate 22, and the ribs 23 are perpendicular to the body plate 22. As shown in fig. 2, two parallel ribs 23 are provided on the rear surface of the body plate 22, but more ribs 23 may be provided in other embodiments. The extending direction of the rib 23 is a horizontal direction, and the plate surface thereof is perpendicular to a vertical direction (i.e. the extending direction of the pin member 3), so as to avoid or relieve bending deformation of a portion of the body plate 22 away from the hinge portion 21 relative to a portion close to the hinge portion 21.

In addition, the screed plate member 2 includes a wear plate 24 snugly disposed on the front face of the body plate 22. The front of body plate 22 receives more friction impact for the surface towards coal cinder, the buggy of treating the clearance, increases wear-resisting plate 24 back, can protect body plate 22 through contact such as wear-resisting plate 24 and coal cinder, can change when wear-resisting plate 24 wearing and tearing are great. Wear plate 24 may be made of a wear resistant material and body plate 22 may be made of other types of materials to reduce costs.

Further, the wear plate 24 is detachably screwed to the body plate 22 by bolts. Referring to fig. 1, a plurality of bolts are coupled to a side of the wear plate 24 facing the body plate 22, and the bolts pass through the body plate 22 so as to be fixed to the body plate 22 by nut members, and when a new wear plate 24 needs to be replaced, the old wear plate 24 can be easily removed by removing the nut members.

In addition, the base 1 comprises a connecting plate 14 connected between the upper supporting plate 11 and the lower supporting plate 12, and the connecting plate 14 is provided with a mounting hole. The connection plate 14 may be used to connect the upper support plate 11 and the lower support plate 12 such that the upper support plate 11 and the lower support plate 12 are maintained at a proper distance; also, the connecting plate 14 may be connected to a corresponding structure in the coal mill, such as a central shaft, to rotate the flight assembly about the shaft.

In addition, the base 1 includes a limit plate 15 connected between the upper support plate 11 and the lower support plate 12, and the squeegee member 2 can pivot within a 90-degree range between the connection plate 14 and the limit plate 15 around the pin member 3. The squeegee member 2 can pivot about the central axis of the pin member 3 within a range of about 90 degrees, which is a space between the connecting plate 14 and the stopper plate 15.

On the other hand, the utility model also provides a coal pulverizer, wherein, the coal pulverizer includes above scheme coal pulverizer's scraper blade subassembly. The base 1 of the scraper assembly is connected to a rotating shaft in a grinding bowl of a coal mill so as to rotate around the rotating shaft to clean coal at the bottom of the grinding bowl.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide the technical solution of the present invention with a plurality of simple modifications, including combining each specific technical feature in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not provide additional description for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. The utility model provides a scraper blade subassembly of coal pulverizer, characterized in that, the scraper blade subassembly includes base (1), scraper blade spare (2) and round pin axle member (3), base (1) is including parallel last backup pad (11) and bottom suspension fagging (12), scraper blade spare (2) including the centre gripping in go up backup pad (11) with articulated portion (21) between bottom suspension fagging (12) and connect in body board (22) of articulated portion (21), round pin axle member (3) are including passing go up backup pad (11), bottom suspension fagging (12) and the axis body (31) of articulated portion (21) and connect in head (32) of axis body (31) upper end, head (32) backstop in the upper surface of going up backup pad (11).

2. The scraper assembly of a coal pulverizer as claimed in claim 1, wherein the upper surface of the upper support plate (11) is provided with a protection plate (13) which is fastened to the head portion (32), the protection plate (13) has a shape in which a lower surface thereof is depressed upward, and a peripheral portion of the protection plate (13) is fitted to the upper support plate (11).

3. The scraper assembly of a coal pulverizer as claimed in claim 2, characterized in that the peripheral portion of the protective plate (13) is bolted to the upper support plate (11).

4. The scraper assembly of a coal pulverizer as claimed in claim 1 wherein the scraper member (2) comprises ribs (23) disposed on the back of the body plate (22).

5. The scraper assembly of a coal pulverizer as claimed in claim 4, characterized in that the body plate (22) is provided at its rear face with a plurality of said ribs (23) arranged in parallel in the vertical direction, said ribs (23) being perpendicular to the body plate (22).

6. The scraper assembly of a coal pulverizer as claimed in claim 1 wherein said scraper member (2) comprises a wear plate (24) snugly disposed on a front face of said body plate (22).

7. The scraper assembly of a coal pulverizer as defined in claim 6 wherein the wear plates (24) are removably bolted to the body plate (22) by bolts.

8. The scraper assembly of a coal pulverizer as claimed in claim 1, characterized in that the base (1) comprises a connecting plate (14) connected between the upper support plate (11) and the lower support plate (12), the connecting plate (14) being provided with mounting holes.

9. The scraper assembly of a coal pulverizer as claimed in claim 8 wherein the base (1) comprises a limit plate (15) connected between the upper support plate (11) and the lower support plate (12), the scraper member (2) being pivotable about the pin member (3) within 90 degrees between the connection plate (14) and the limit plate (15).

10. A coal pulverizer comprising the scraper assembly of the coal pulverizer of any of claims 1-9.