CN219602151U

CN219602151U - Raw coal hopper anti-blocking device

Info

Publication number: CN219602151U
Application number: CN202320593424.8U
Authority: CN
Inventors: 郝哲晶; 黄浩; 段刚; 姜文鑫; 张哲�; 边宇飞; 杨志国
Original assignee: Changchun No2 Co Generation Power Co ltd
Current assignee: Changchun No2 Co Generation Power Co ltd
Priority date: 2023-03-23
Filing date: 2023-03-23
Publication date: 2023-08-29
Anticipated expiration: 2033-03-23

Abstract

The utility model relates to the technical field of rotating devices in large containers, in particular to an anti-blocking device of a raw coal bucket, which comprises a raw coal bucket, wherein a rotating blocking clearing device is arranged at the lower part of the raw coal bucket, the rotating blocking clearing device comprises a large gear which is rotationally connected with the lower part of the raw coal bucket and a scraper which is detachably and fixedly connected with the large gear, the scraper is attached to the inner wall of the raw coal bucket, a connecting gear is meshed with the outer part of the large gear, the connecting gear is connected with a driving device, and the connecting gear drives the large gear and the scraper to rotate so as to clear the raw coal bucket; the outer wall of the raw coal bucket is provided with a plurality of bin wall rappers for vibrating and removing coal. According to the utility model, the rotary blocking clearing device is arranged at the lower part of the raw coal bucket and is matched with the vibration striking action of the bin wall vibrator on the bin wall, so that raw coal stuck on the raw coal bucket is cleared, the conditions of blocking and covering coal of the raw coal bucket are effectively solved, the uniform output of the raw coal is ensured, the stability of the coal feeding amount is ensured, and the blasting risk of a pulverizing system is effectively reduced.

Description

Raw coal hopper anti-blocking device

Technical Field

The utility model relates to the technical field of rotating devices in large containers, in particular to an anti-blocking device for a raw coal bucket.

Background

The raw coal hopper is of an inverted cone structure, but the difference between the moving point on the curve track and the distances between the left focus and the right focus is a fixed value, the change of the section shrinkage rate of each section is also a fixed value, the focus is a fixed point, and a repose angle is easy to form. When wet sticky coal types such as raw coal with large moisture and viscosity or blended coal slime are subjected to superposition influence of moisture, viscosity and pressure, the cross section shrinkage regularity of the coal hopper is changed, so that the sustainability of coal flow sliding force under the action of curve extension impact force and cross section extrusion of the bin wall is gradually deteriorated, stable stagnation is easily formed, the lower flow velocity is reduced, and the coal is blocked, therefore, the coal hopper appearance structure is a main cause for blocking coal. Because the coal quality condition is poor, the coal quality viscosity is larger, and particularly, the external moisture of raw coal in the heating period is more, the raw coal is easy to adhere to the inner wall of a raw coal bucket, and the adhered coal is stored in the raw coal bucket for a long time to cause the wall hanging, the coal adhesion and the covering and blocking of the raw coal bucket. The hammer and the simple rapping device are arranged on site, but the hammer has limited effect, can only solve the phenomenon that part of coal is unsmooth, and also needs to be frequently knocked and dredged manually, thereby having low efficiency and wasting a large amount of manpower. The on-site check of coal blockage basically occurs at the middle and lower parts of the raw coal hopper, when the coal blockage is serious, the concentration of coal dust in the coal pulverizing system is changed, the explosion probability of the coal pulverizing system is increased, and the safety of operation is greatly risked, so that the safety operation of a unit and the personal safety of maintenance personnel are seriously influenced.

Disclosure of Invention

In order to solve at least one technical problem, the utility model provides an anti-blocking device for a raw coal bucket, which is characterized in that a rotary blocking clearing device is arranged at the lower part of the raw coal bucket, the rotary blocking clearing device comprises a large gear which is rotationally connected with the lower part of the raw coal bucket and a scraper which is detachably and fixedly connected with the large gear, and the scraper is attached to the inner wall of the raw coal bucket.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the raw coal bucket anti-blocking device comprises a raw coal bucket, wherein a rotary blocking clearing device is arranged at the lower part of the raw coal bucket, the rotary blocking clearing device comprises a large gear which is rotationally connected with the lower part of the raw coal bucket and a scraper which is detachably and fixedly connected with the large gear, the scraper is attached to the inner wall of the raw coal bucket, a connecting gear is meshed with the outer part of the large gear, the connecting gear is connected with a driving device, and the connecting gear drives the large gear and the scraper to rotate so as to clear the raw coal bucket; the outer wall of the raw coal bucket is provided with a plurality of bin wall rappers for vibrating and removing coal.

Preferably, the scraper comprises a strip-shaped cutter body and a slope cutter head arranged on the front side of the cutter body along the length direction of the cutter body, and the slope of the cutter head is attached to the inner wall of the raw coal bucket.

Preferably, the scraper is movably fixed inside the large gear through a connecting arm.

Preferably, the driving device comprises a speed reducer connected with the connecting gear for providing driving force and a motor connected with the speed reducer.

Preferably, the bin wall vibrator is connected with the side wall of the raw coal bucket through a base and is spirally arranged along the circumferential direction of the outer wall of the raw coal bucket.

Preferably, the bin wall vibrator is connected with the outer wall of the raw coal bucket.

Preferably, the lower part of the bin wall vibrator is provided with an overhaul platform, and the overhaul platform is fixed on the outer wall of the raw coal bucket.

Preferably, a gear box is arranged on the outer side of the large gear, and the gear box is fixedly connected with the lower part of the raw coal bucket.

Preferably, a plurality of observation windows are arranged on the outer wall of the raw coal bucket.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the rotary blocking removing device is arranged at the lower part of the raw coal bucket, and comprises the large gear rotationally connected with the lower part of the raw coal bucket and the scraper detachably and fixedly connected with the large gear, and under the action of the driving device, the scraper can rotate around the inner wall of the raw coal bucket and is matched with the vibration beating action of the bin wall vibrator on the bin wall, so that raw coal stuck on the raw coal bucket is removed, the conditions of blocking and covering coal of the raw coal bucket are effectively solved, the uniform output of the raw coal is ensured, the stability of the coal feeding amount is ensured, and the blasting risk of a pulverizing system is effectively reduced.

2. According to the utility model, the speed reducer is used for driving the connecting gear, so that the scraper on the large gear is driven to rotate along the circumferential direction of the inner wall of the raw coal bucket, and the inner wall of the raw coal bucket can be rotated to clean coal regularly by controlling the speed reducer; the plurality of bin wall rappers spirally arranged on the outer wall of the raw coal bucket can be matched with the rotary blocking clearing device, and the raw coal can be ensured to be cleaned from the inner wall of the raw coal bucket and smoothly fall into the coal feeder through continuously vibrating and beating the outer wall of the raw coal bucket; can avoid the storehouse wall vibrator to drop and cause unexpected injury through setting up the anticreep chain, the maintenance platform that the storehouse wall vibrator lower part was equipped with makes things convenient for the maintainer to the maintenance and the maintenance of vibrator, in addition, can in time discover through the observation window whether raw coal fight inner wall is pasted with the raw coal to can observe after clear up the raw coal and clear up totally.

Drawings

FIG. 1 is a schematic structural view of an anti-blocking device of a raw coal hopper;

FIG. 2 is a side view of a doctor blade of the utility model;

fig. 3 is a schematic view of the arrangement of a bin wall rapper in accordance with the present utility model;

in the figure: 1. raw coal hopper; 2. rotating the blocking removing device; 21. a large gear; 22. a gear box; 23. a scraper; 231. a cutter body; 232. a cutter head; 24. a connecting arm; 3. a connecting gear; 4. a driving device; 41. a speed reducer; 42. a motor; 5. a bin wall vibrator; 6. a base; 7. a maintenance platform; 8. anti-chain release; 9. and an observation window.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present utility model, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments of the present utility model.

Referring to fig. 1, an anti-blocking device of a raw coal bucket comprises a raw coal bucket 1, a rotary blocking clearing device 2 is arranged at the lower part of the raw coal bucket 1, the rotary blocking clearing device 2 comprises a large gear 21 rotatably connected with the lower part of the raw coal bucket 1 and a scraper 23 detachably and fixedly connected with the large gear 21, the scraper 23 is attached to the inner wall of the raw coal bucket 1, a connecting gear 3 is meshed with the outer part of the large gear 21, the connecting gear 3 is connected with a driving device 4, and the connecting gear 3 drives the large gear 21 and the scraper 23 to rotate so as to clear the raw coal bucket 1; the outer wall of the raw coal bucket 1 is provided with a plurality of bin wall rappers 5 for vibrating and removing coal.

In the above embodiment, through the rotatory clear stifled device 2 of installation in raw coal fill 1 lower part, rotatory clear stifled device 2 includes with raw coal fill 1 lower part rotate be connected gear wheel 21 and with gear wheel 21 detachable fixed connection's scraper 23, because scraper 23 pastes with raw coal fill 1 inner wall, under drive arrangement 4's effect, scraper 23 can rotate around raw coal fill 1 inner wall to cooperate the vibration of bin wall vibrator 5 to beat the effect of bin wall, thereby clear away the raw coal of pasting on raw coal fill 1, effectively solve raw coal fill 1 stifled coal, the condition of fluffy coal, guarantee raw coal uniform output, ensure the stability of coal feeding volume, effectively reduce the risk of coal pulverizing system blasting.

The rotary blocking removing device 2 is installed at the position of about 2000±500mm above the inlet of the coal feeder connected with the lower part of the raw coal bucket 1, as shown in fig. 3, the bin wall vibrator 5 is connected with the side wall of the raw coal bucket 1 through the base 6 and is spirally arranged along the circumferential direction of the outer wall of the raw coal bucket 1, in specific operation, the rotary blocking removing device is installed according to 3 elevations, the 1 st bin wall vibrator is installed at about 3000±500mm above the inlet of the coal feeder, the 2 nd bin wall vibrator is installed at about 5000±500mm above the inlet of the coal feeder, the 3 rd bin wall vibrator is installed at about 7000±500mm above the inlet of the coal feeder, and the adjacent bin wall vibrator 5 has an included angle of 120 ° in the circumferential direction of the raw coal bucket 1, and the bin wall vibrator is welded on the outer wall of the raw coal bucket 1 through the base 6. The bin wall vibrator 5 can adopt exciting force 15000 (N), power 1.1kW and external dimension 410mm, 300mm and 350mm. The bin wall vibrator 5 and the motor 42 can be directly connected to the unit DCS system for remote control through an electric control system.

In the above embodiment, in order to facilitate the installation of the large gear 21, the outer side of the large gear 21 is provided with the gear box 22, and the gear box 22 is fixedly connected with the lower part of the raw coal bucket 1. Thus, under the transmission of the connecting gear 3, the large gear 21 can rotate in the gear box 22, and further drive the scraper 23 to rotate, so that the coal cleaning work of the raw coal bucket 1 is completed.

As shown in fig. 2, the scraper 23 includes an elongated cutter body 231 and a slope cutter head 232 disposed on the front side of the cutter body 231 along the length direction of the cutter body 231, wherein the slope of the cutter head 232 is attached to the inner wall of the raw coal bucket 1.

In order to facilitate the removal of raw coal adhering to the inner wall of the raw coal hopper 1, the scraper 23 is inclined at an angle to the inner wall of the raw coal hopper 1, preferably 30-45 °. Of course, in order to further facilitate replacement of the cutter body 231 and the cutter head 232, the connection arm 24 and the cutter body 231 are detachably installed, so that only damaged parts are replaced when the cutter body 231 or the cutter head 232 is damaged, and the connection arm 24 does not need to be replaced together, thereby reducing cost. The doctor blade 23 is integrally forged from 42 CrMo.

In one embodiment, the scraper 23 is inevitably damaged during use, and for easy replacement, the scraper 23 may be movably fixed inside the large gear 21 by a connecting arm 24.

As shown in fig. 1 and 3, in order to avoid accidental injury caused by falling of the bin wall vibrator 5, the bin wall vibrator 5 and the outer wall of the raw coal bucket 1 are connected with an anti-falling chain 8, and the anti-falling chain 8 adopts a chain ring with phi 4 mm; in order to facilitate maintenance and overhaul of the vibrator by an overhaul worker, an overhaul platform 7 is arranged at the lower part of the bin wall vibrator 5, and the overhaul platform 7 is fixed on the outer wall of the raw coal bucket 1.

In a certain embodiment, the driving device 4 includes a speed reducer 41 connected to the connection gear 3 for providing driving force, and a motor 42 connected to the speed reducer 41. The speed reducer 41 adopts a planetary hard tooth surface speed reducer 41, the reduction ratio is not less than 400, the output torque is not less than 3000Nm, and the rotation speed of the rotary blocking removing device 2 can be adjusted by adjusting the rotation speed of the motor 42 in actual operation.

In order to find out whether raw coal is stuck to the inner wall of the raw coal bucket 1 in time and observe whether the raw coal is cleaned after the raw coal is cleaned, a plurality of observation windows 9 are arranged on the outer wall of the raw coal bucket 1. In order to facilitate opening and closing of the observation window 9, the observation window 9 can be hinged by a rotating shaft, and the observation window 9 is subjected to technical treatment, so that the closed coal hopper is smooth and tight in inner wall, free of air leakage and powder leakage, and free of coal hanging and coal accumulation on the inner wall.

According to the utility model, the rotary blockage removing device 2 is arranged at the lower part of the raw coal bucket 1, and the rotary blockage removing device 2 comprises the large gear 21 which is rotationally connected with the lower part of the raw coal bucket 1 and the scraper 23 which is detachably and fixedly connected with the large gear 21, because the scraper 23 is attached to the inner wall of the raw coal bucket 1, under the action of the driving device 4, the scraper 23 can rotate around the inner wall of the raw coal bucket 1 and is matched with the vibration beating action of the bin wall vibrator 5 on the bin wall, so that raw coal adhered to the raw coal bucket 1 is removed, the conditions of coal blockage and coal covering of the raw coal bucket 1 are effectively solved, the uniform output of raw coal is ensured, the stability of coal feeding amount is ensured, and the blasting risk of a pulverizing system is effectively reduced.

While the foregoing is directed to embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and changes can be made without departing from the principles of the present utility model, and such modifications and changes should be considered as being within the scope of the present utility model.

Claims

1. The raw coal bucket anti-blocking device comprises a raw coal bucket (1), and is characterized in that a rotary blocking clearing device (2) is arranged at the lower part of the raw coal bucket (1), the rotary blocking clearing device (2) comprises a large gear (21) rotationally connected with the lower part of the raw coal bucket (1) and a scraper (23) detachably and fixedly connected with the large gear (21), the scraper (23) is attached to the inner wall of the raw coal bucket (1), a connecting gear (3) is meshed with the outer part of the large gear (21), the connecting gear (3) is connected with a driving device (4), and the connecting gear (3) drives the large gear (21) and the scraper (23) to rotate so as to clear the raw coal bucket (1); the outer wall of the raw coal bucket (1) is provided with a plurality of bin wall rappers (5) for vibrating and removing coal.

2. The raw coal bucket anti-blocking device according to claim 1, wherein the scraper (23) comprises an elongated cutter body (231) and a slope cutter head (232) arranged on the front side of the cutter body (231) along the length direction of the cutter body (231), and the slope of the cutter head (232) is attached to the inner wall of the raw coal bucket (1).

3. Raw coal bucket anti-blocking device according to claim 2, characterized in that the scraper (23) is movably fixed inside the gearwheel (21) by means of a connecting arm (24).

4. The raw coal bucket anti-blocking device according to claim 1, wherein the driving device (4) comprises a speed reducer (41) connected with the connecting gear (3) for providing driving force and a motor (42) connected with the speed reducer (41).

5. The raw coal bucket anti-blocking device according to claim 1, wherein the bin wall vibrator (5) is connected with the side wall of the raw coal bucket (1) through a base (6) and is spirally arranged along the circumferential direction of the outer wall of the raw coal bucket (1).

6. The raw coal bucket anti-blocking device according to claim 5, wherein the bin wall vibrator (5) is connected with an anti-drop chain (8) with the outer wall of the raw coal bucket (1).

7. The raw coal bucket anti-blocking device according to claim 6, wherein an overhaul platform (7) is arranged at the lower part of the bin wall vibrator (5), and the overhaul platform (7) is fixed on the outer wall of the raw coal bucket (1).

8. The raw coal bucket anti-blocking device according to any one of claims 1 to 7, wherein a gear box (22) is arranged on the outer side of the large gear (21), and the gear box (22) is fixedly connected with the lower part of the raw coal bucket (1).

9. The raw coal bucket anti-blocking device according to claim 8, wherein a plurality of observation windows (9) are arranged on the outer wall of the raw coal bucket (1).