Drawer type coal feeder sweeping chain device

Abstract

The invention relates to the technical field of coal feeder cleaning, in particular to a drawer type coal feeder cleaning chain device which comprises a bearing assembly, and the bearing assembly comprises a top cover and a shell arranged above the top cover; the cleaning assembly comprises a first cleaning plate and a second cleaning plate which are arranged on the inner side of the top cover, the top cover further comprises an observation window arranged above the shell, a coal inlet pipe is arranged at the position, located on one side of the observation window, of one end of the shell, a front cabinet door is arranged at one end of the top cover, a rear cabinet door is arranged at the other end of the top cover, and the front cabinet door and the rear cabinet door are arranged in the shell. One end of the top cover is provided with a hole inlet door, and the other end of the top cover is provided with a first driving part located on one side of the hole inlet door. Coal briquettes enter the top cover through the coal inlet pipe, then work is conducted on the coal briquettes by driving the first driving part, after work is completed, the sweeping assembly is driven, and the coal briquettes are swept through reciprocating motion brought by follow-up assemblies of the sweeping assembly; and therefore, residual coal briquettes and coal cinder in the top cover can be cleaned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal feeder cleaning, in particular to a drawer type coal feeder cleaning chain device. BACKGROUND

[0002] The drawer type coal feeder is the core conveying equipment in the coal-fired power generation, industrial boiler and other coal-fired power systems, mainly used for quantitatively conveying raw coal from the coal storage bin to the boiler combustion system, and its key advantage lies in the adoption of the drawer type structure design, the drawer unit bearing the coal conveying assembly can be pulled out along the preset track as a whole, greatly reducing the difficulty of equipment internal component maintenance, maintenance and fault handling, and ensuring the continuity of the coal supply of the power system. In the actual operation process, the coal feeder realizes the continuous transmission of raw coal through the internal belt conveyor, but due to the influence of factors such as belt operation vibration, belt edge sealing gap and raw coal particle shape difference, part of the coal particles are easy to slide off the surface of the belt and gradually accumulate in the gap between the bottom of the drawer unit, the support structure below the belt and the inner wall of the equipment.

[0003] In the prior art, there is no special high-efficiency cleaning device for cleaning the coal particles that slide off in the drawer type coal feeder, mainly relying on two types of ways: one is manual cleaning during shutdown, that is, when the coal particles accumulate to a certain extent, the coal feeder needs to be stopped, the drawer unit is pulled out, and the accumulated coal particles are manually removed by the operator using a scraper, brush and other tools. This method not only has complicated operation and long time consumption, but also directly interrupts the coal conveying, seriously affecting the continuous operation efficiency of the power system; the second is intermittent auxiliary cleaning, which mainly uses compressed air blowing or fixed scraper assembly. The compressed air blowing is easy to cause fine coal dust to fly, which cannot completely remove the accumulated coal particles in the gap and also causes dust pollution in the working environment, and the fixed scraper assembly is easy to wear and jam due to the adaptation conflict with the pull-out structure of the drawer unit, and cannot move synchronously with the drawer unit, so it is difficult to form a continuous cleaning effect on the accumulated coal particles. SUMMARY

[0004] The purpose of the present application is to provide a drawer type coal feeder cleaning chain device, which aims to solve the problem of cleaning the coal particles that slide off and accumulate on the belt of the coal feeder and prevent the accumulation of coal dust in the coal feeder.

[0005] The above technical problem is solved by the following technical scheme: the present application proposes the following technical scheme: a drawer type coal feeder cleaning chain device, which comprises a bearing assembly, the bearing assembly comprises a top cover and a shell arranged above the top cover; and, A cleaning assembly comprising a first cleaning plate and a second cleaning plate arranged inside the top cover.

[0006] As a preferred embodiment of the drawer type coal feeder cleaning chain device of the present application: the top cover further comprises an observation window arranged above the shell, and one end of the shell is provided with a coal inlet pipe on one side of the observation window.

[0007] As a preferred embodiment of the drawer type coal feeder cleaning chain device of the present application: one end of the top cover is provided with a front cabinet door, the other end of the top cover is provided with a rear cabinet door, one end of the top cover is provided with an access door, and the other end of the top cover is provided with a first driving member on one side of the access door.

[0008] As a preferred embodiment of the drawer type coal feeder cleaning chain device of the present application: the cleaning assembly further comprises a second driving member arranged at one end of the top cover, one end of the second driving member is provided with a first shaft, the inside of the top cover is provided with a second shaft, and the outside of the first shaft and the second shaft is provided with a bearing shaft.

[0009] As a preferred embodiment of the drawer type coal feeder cleaning chain device of the present application: the inside of the bearing shaft is provided with a chain, the outside of the chain is provided with a first mounting block, the first cleaning plate is mounted at one end of the first mounting block, the other side of the chain is provided with a second mounting block, and the second cleaning plate is mounted at one end of the second mounting block.

[0010] As a preferred embodiment of the drawer type coal feeder cleaning chain device of the present application: one end of the top cover is provided with a baffle.

[0011] As a preferred embodiment of the drawer type coal feeder cleaning chain device of the present application: further comprising a driving assembly, the driving assembly comprises a protective shell arranged outside the coal inlet pipe, the protective shell is provided with a protective frame at both ends, and the protective frame is provided with a connecting frame at one end.

[0012] As a preferred embodiment of the drawer type coal feeder cleaning chain device of the present application: one end of the connecting frame is provided with a third driving member, one end of the third driving member is provided with a driving rod, one end of the left driving rod is provided with a first closing plate, and one end of the right driving rod is provided with a second closing plate.

[0013] As a preferred embodiment of the drawer type coal feeder cleaning chain device of the present application: further comprising a stirring assembly, the stirring assembly comprises a connecting pipe arranged inside the coal inlet pipe, the inside of the connecting pipe is provided with a stirring plate, the stirring plate is provided with a fixed cylinder therebetween, the inside of the fixed cylinder is provided with an annular groove, the inside of the fixed cylinder is provided with a sliding disc, the outside of the sliding disc is provided with a sliding block, and the inside of the fixed cylinder is provided with an elastic member above the sliding disc.

[0014] As a preferred embodiment of the drawer type coal feeder cleaning chain device of the application, the lower side of the sliding disc is provided with a connecting plate, the inner side of the connecting plate is provided with a sliding wheel, the inner side of the first closing plate is provided with a sliding groove, and one end of the second closing plate is provided with a closing block.

[0015] The application has the beneficial effect that when work is needed, coal enters the top cover through the coal inlet pipe, and the coal is worked by driving the first driving member, and when the work is completed, the cleaning assembly is driven to clean the residual coal and coal cinder in the top cover through the reciprocating movement of the subsequent components of the cleaning assembly. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings of the embodiments of the application will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the application, and are not a limitation on the application.

[0017] Figure 1 The figure shows the overall assembly in the application.

[0018] Figure 2 The figure shows the cleaning assembly in the application.

[0019] Figure 3 The figure shows the driving assembly in the application.

[0020] Figure 4 The figure shows the cross-sectional view of the driving assembly in the application.

[0021] Figure 5 The figure shows the stirring assembly in the application.

[0022] In the figure: 1, bearing assembly; 11, top cover; 111, shell; 1111, observation window; 12, front cabinet door; 13, rear cabinet door; 14, inlet door; 15, coal inlet pipe; 16, first driving member; 2, cleaning assembly; 21, second driving member; 22, first shaft; 23, second shaft; 24, bearing shaft; 25, chain; 26, first mounting block; 261, first cleaning plate; 27, second mounting block; 271, second cleaning plate; 28, baffle; 3, driving assembly; 31, protective shell; 32, protective frame; 321, connecting frame; 33, third driving member; 331, driving rod; 34, first closing plate; 35, second closing plate; 4, stirring assembly; 41, fixed cylinder; 411, annular groove; 42, sliding disc; 421, sliding block; 43, elastic member; 44, connecting plate; 441, sliding wheel; 45, sliding groove; 46, closing block; 47, stirring plate; 48, connecting pipe. DETAILED DESCRIPTION

[0023] For those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with specific embodiments and drawings.

[0024] The terms used in the present application are those general terms currently widely used in the art in consideration of the functions of the present application, but the terms can be changed according to the intention of those of ordinary skill in the art, precedents, or new technology in the art. In addition, specific terms can be selected by the applicant, and in this case, the detailed meaning thereof will be described in the detailed description of the present application. Therefore, the terms used in the specification should not be understood as mere names, but based on the meaning of the terms and the overall description of the present application.

[0025] Referring to Figure 1 The present embodiment provides a drawer type coal feeder cleaning chain device, which comprises a bearing assembly 1, the bearing assembly 1 comprising a top cover 11 and a shell 111 arranged above the top cover 11; and, The cleaning assembly 2 comprises a first cleaning plate 261 and a second cleaning plate 271 arranged inside the top cover 11.

[0026] The top cover 11 further comprises an observation window 1111 arranged above the shell 111, one end of the shell 111 is provided with a coal inlet pipe 15 at one side of the observation window 1111, the observation window 1111 arranged above the top cover 11 can observe the internal coal conveying and residual coal cleaning state in real time, without frequent opening of the cabinet door for inspection, reducing the number of equipment start and stop; the distribution design of the front cabinet door 12, the rear cabinet door 13 and the entry door 14 can not only facilitate the staff to quickly enter for maintenance when the equipment fails, but also provide sufficient operation space when the cleaning assembly 2 needs to be maintained.

[0027] One end of the top cover 11 is provided with the front cabinet door 12, the other end of the top cover 11 is provided with the rear cabinet door 13, one end of the top cover 11 is provided with the entry door 14, and the other end of the top cover 11 is provided with the first driving member 16 at one side of the entry door 14.

[0028] Use process: when work is needed, the coal enters the top cover 11 through the coal inlet pipe 15, and then the first driving member 16 is driven to work on the coal, and when the work is completed, the cleaning assembly 2 is driven to clean the residual coal and coal residue in the top cover 11 through the reciprocating motion of the subsequent components of the cleaning assembly 2.

[0029] Embodiment 2, referring to Figures 1-4 The second embodiment of the present application is different from the previous embodiment in that the cleaning assembly 2 further comprises a second driving member 21 arranged at one end of the top cover 11, one end of the second driving member 21 is provided with a first shaft rod 22, the inside of the top cover 11 is provided with a second shaft rod 23, and the outside of the first shaft rod 22 and the second shaft rod 23 is provided with a bearing shaft 24.

[0030] The inner side of the bearing shaft 24 is provided with a chain 25, the outer side of the chain 25 is provided with a first mounting block 26, a first cleaning plate 261 is mounted at one end of the first mounting block 26, the other side of the chain 25 is provided with a second mounting block 27, and a second cleaning plate 271 is mounted at one end of the second mounting block 27. The first shaft rod 22 and the second shaft rod 23 are driven by the second driving member 21 to drive the linkage of the bearing shaft 24, and the chain 25 is driven to rotate circularly. The first cleaning plate 261 and the second cleaning plate 271 change from simple reciprocating to circular movement, and the two cleaning plates can cover the residual coal along the bottom of the inner side of the top cover 11. There is no cleaning dead angle, the cleaning efficiency is greatly improved, and the fine coal ash can be completely removed to avoid the problem of internal dust accumulation and caking caused by residual dead angle.

[0031] One end of the top cover 11 is provided with a baffle 28. When the first cleaning plate 261 and the second cleaning plate 271 finish cleaning the inside of the shell 111, the accumulated coal ash can be treated or recycled by opening the baffle 28 at one end of the top cover 11. The baffle 28 structure at one end of the top cover 11 can block the coal ash from falling outside the equipment when the two cleaning plates remove the residual coal, avoid the jamming failure caused by the coal ash falling into the transmission parts of the equipment, and reduce the frequency of equipment downtime maintenance. At the same time, the cooperation design of the chain 25 and the bearing shaft 24 makes the stress of the two cleaning plates uniform during movement, avoids the inclination and fracture of a single cleaning plate due to uneven stress, improves the running stability of the cleaning assembly 2, and prolongs the replacement cycle of the cleaning plate, chain 25 and other vulnerable parts.

[0032] Use process: when the inside of the coal feeder needs to be cleaned, the driving 21 is driven, at this time, the 21 drives the first shaft rod 22 to rotate, and the first shaft rod 22 drives the outer bearing shaft 24 to rotate. In the process of rotation, the bearing shaft 24 drives the inner chain 25 to rotate circularly. At this time, the chain 25 drives the first mounting block 26 and the second mounting block 27 on the outer side to move reciprocally. In the process of reciprocating movement, the first mounting block 26 and the second mounting block 27 drive the first cleaning plate 261 and the second cleaning plate 271 fixed thereon to move reciprocally. In the process of reciprocating movement, the first cleaning plate 261 and the second cleaning plate 271 contact the bottom of the top cover 11 and are driven by the chain 25 to sequentially remove the residual coal or ash on the bottom, thereby realizing the cleaning of the coal feeder and avoiding the internal accumulation of too much coal and sundries.

[0033] Embodiment 3, refer to Figures 1-4For the third embodiment of the present application, unlike the previous embodiment, it further comprises a driving assembly 3, which comprises a protective shell 31 arranged outside the coal inlet pipe 15, and protective frames 32 arranged at both ends of the protective shell 31, and a connecting frame 321 arranged at one end of the protective frame 32.

[0034] One end of the connecting frame 321 is provided with a third driving member 33, one end of the third driving member 33 is provided with a driving rod 331, one end of the left driving rod 331 is provided with a first closing plate 34, one end of the right driving rod 331 is provided with a second closing plate 35, and the driving assembly 3 drives the driving rod 331, the first closing plate 34 and the second closing plate 35 to move through the third driving member 33. When the coal reaches the expected storage capacity, the chamber passage of the coal inlet pipe 15 and the connecting pipe 48 can be accurately blocked. Compared with the traditional coal feeder which relies on manual closing of the feeding valve, this structure realizes automatic and instant blocking, avoids excessive accumulation of coal due to delay of manual operation, and also prevents insufficient coal in the subsequent process due to delayed material interruption, thereby ensuring production continuity.

[0035] Further comprising an agitating assembly 4, which comprises a connecting pipe 48 arranged inside the coal inlet pipe 15, agitating plates 47 arranged inside the connecting pipe 48, fixed cylinders 41 arranged between the agitating plates 47, annular grooves 411 formed in the inside of the fixed cylinders 41, sliding discs 42 arranged inside the fixed cylinders 41, sliding blocks 421 arranged on the outside of the sliding discs 42, and elastic members 43 arranged inside the fixed cylinders 41 above the sliding discs 42. A connecting plate 44 is arranged below the sliding disc 42, a sliding wheel 441 is arranged inside the connecting plate 44, a sliding groove 45 is formed in the inside of the first closing plate 34, and a closing block 46 is arranged at one end of the second closing plate 35. The design of the agitating assembly 4 directly hits the pain point of the coal inlet pipe 15 of the coal feeder. When the first closing plate 34 and the second closing plate 35 move inward to block the passage, the sliding groove 45 drives the connecting plate 44 and the sliding disc 42 to move upward through the sliding wheel 441, and then pushes the fixed cylinder 41 and the agitating plate 47 to rotate, thereby actively agitating the coal inside the coal inlet pipe 15 by the agitating plate 47. This can instantly resolve the blockage caused by the accumulation and extrusion of coal blocks, improve the smoothness of coal block falling, and reduce the downtime of equipment caused by blockage.

[0036] The rotation of the agitating plate 47 can make the coal blocks in the coal inlet pipe 15 more evenly distributed, avoiding the phenomenon of fast and slow falling caused by the local accumulation of coal blocks in the pipe. Uniform coal falling can ensure stable coal quantity entering the top cover 11, reduce the burden of the subsequent cleaning assembly 2, and avoid the risk of coal blocks overflowing in the top cover 11 due to sudden increase of coal quantity.

[0037] Wherein, in the initial state, the first closing plate 34 and the second closing plate 35 are respectively located inside the two side protection frames 32, and the cavity passage between the coal inlet pipe 15 and the connecting pipe 48 is not blocked. When it is needed to drop the coal blocks into the coal feeder, the cavity passage between the coal inlet pipe 15 and the connecting pipe 48 is formed, so that the coal blocks are dropped into the top cover 11 through the cavity passage between the coal inlet pipe 15 and the connecting pipe 48. When the coal blocks are dropped to the expected storage, the subsequent assembly is moved by driving the driving assembly 3. When the driving assembly 3 moves to a certain distance, the driving assembly 3 is located inside the protection shell 31 and between the coal inlet pipe 15 and the connecting pipe 48, covering the cavity between the coal inlet pipe 15 and the connecting pipe 48, so as to block the falling of the coal powder.

[0038] The use process is as follows: in the initial state, the elastic member 43 is in the reset state, the sliding disc 42 and the sliding block 421 are located below the inside of the fixed cylinder 41, and the connecting plate 44 and the sliding wheel 441 are located outside the fixed cylinder 41. When the coal powder is dropped to the expected storage and needs to be prevented from continuing to fall, the first closing plate 34 and the second closing plate 35 move inward. When the first closing plate 34 moves inward to a certain distance, the sliding groove 45 opened at one end of the first closing plate 34 contacts the sliding wheel 441, and the sliding wheel 441 is lifted up through the sliding groove of the inclined angle of the sliding groove 45, so that the sliding wheel 441 moves upward. The sliding wheel 441 drives the connecting plate 44 to move upward, the connecting plate 44 drives the sliding disc 42 to move upward, and the sliding disc 42 is extruded to the elastic member 43 during the upward movement of the sliding disc 42, so that the elastic member 43 is compressed. The sliding disc 42 drives the sliding block 421 to move upward. At this time, the sliding disc 42 and the sliding block 421 are located above the inside of the fixed cylinder 41 and below the compressed elastic member 43. During the upward movement of the sliding block 421, the sliding block 421 slides in the annular groove 411. The annular groove 411 is annularly recessed, so that the sliding block 421 drives the fixed cylinder 41 to rotate, and the fixed cylinder 41 drives the stirring plate 47 to rotate, so that the coal blocks which are stuck due to accumulation and extrusion are pushed by the swinging fan blades 404 to fall smoothly.

[0039] Finally, it should be pointed out that the above detailed description of the method and device is only an embodiment, and those skilled in the art can modify the embodiment in different ways without departing from the scope of the present application.

Claims

1. A drawer-type coal feeder cleaning chain device, characterized in that: include, A support assembly (1), the support assembly (1) including a top cover (11) and a housing (111) disposed above the top cover (11); and, The cleaning assembly (2) includes a first cleaning plate (261) and a second cleaning plate (271) disposed inside the top cover (11).

2. The drawer-type coal feeder cleaning chain device as described in claim 1, characterized in that: The top cover (11) also includes an observation window (1111) located above the housing (111), and a coal inlet pipe (15) is provided at one end of the housing (111) on one side of the observation window (1111).

3. The drawer-type coal feeder cleaning chain device as described in claim 2, characterized in that: One end of the top cover (11) is provided with a front cabinet door (12), the other end of the top cover (11) is provided with a rear cabinet door (13), one end of the top cover (11) is provided with an inlet door (14), and the other end of the top cover (11) is provided with a first driving member (16) on one side of the inlet door (14).

4. The drawer-type coal feeder cleaning chain device as described in claim 3, characterized in that: The cleaning assembly (2) also includes a second drive member (21) located at one end of the top cover (11). One end of the second drive member (21) is provided with a first shaft (22). The inner side of the top cover (11) is provided with a second shaft (23). The outer sides of the first shaft (22) and the second shaft (23) are provided with a bearing shaft (24).

5. The drawer-type coal feeder cleaning chain device as described in claim 4, characterized in that: The inner side of the bearing shaft (24) is provided with a chain (25), and the outer side of the chain (25) is provided with a first mounting block (26). The first cleaning plate (261) is installed at one end of the first mounting block (26), and the other side of the chain (25) is provided with a second mounting block (27). The second cleaning plate (271) is installed at one end of the second mounting block (27).

6. The drawer-type coal feeder cleaning chain device as described in claim 5, characterized in that: A baffle (28) is provided at one end of the top cover (11).

7. The drawer-type coal feeder cleaning chain device as described in claim 6, characterized in that: It also includes a drive assembly (3), which includes a protective shell (31) located outside the coal inlet pipe (15), with protective frames (32) at both ends of the protective shell (31) and a connecting frame (321) at one end of the protective frame (32).

8. The drawer-type coal feeder cleaning chain device as described in claim 7, characterized in that: One end of the connecting frame (321) is provided with a third driving member (33), one end of the third driving member (33) is provided with a driving rod (331), one end of the driving rod (331) on the left side is provided with a first closing plate (34), and one end of the driving rod (331) on the right side is provided with a second closing plate (35).

9. The drawer-type coal feeder cleaning chain device as described in claim 8, characterized in that: It also includes an agitation assembly (4), which includes a connecting pipe (48) located inside the coal inlet pipe (15). An agitation plate (47) is provided inside the connecting pipe (48), and a fixed cylinder (41) is provided between the agitation plates (47). An annular groove (411) is provided inside the fixed cylinder (41), and a sliding disc (42) is provided inside the fixed cylinder (41). A sliding block (421) is provided outside the sliding disc (42), and an elastic element (43) is provided inside the fixed cylinder (41) above the sliding disc (42).

10. The drawer-type coal feeder cleaning chain device as described in claim 9, characterized in that: A connecting plate (44) is provided below the sliding plate (42), and a sliding wheel (441) is provided on the inner side of the connecting plate (44). A sliding groove (45) is provided on the inner side of the first closing plate (34), and a closing block (46) is provided at one end of the second closing plate (35).

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