Pebble coal discharging device

Abstract

The pebble coal discharging device comprises a coal mill, a conveying mechanism and a plurality of discharging channels, and the conveying mechanism is fixedly installed below the coal mill; the multiple discharge channels are evenly and fixedly installed between the coal mill and the conveying mechanism at intervals, the upper ends of the discharge channels communicate with a discharge port of the coal mill, and the lower ends of the discharge channels communicate with the conveying mechanism. The multi-channel pebble coal discharging device has the beneficial effects that the structure is simple, the design is reasonable, multi-channel discharging of pebble coal can be achieved, overhauling and cleaning are convenient, and the operation efficiency is high; meanwhile, flying dust generated in the pebble coal discharging process can be effectively treated, flying dust is avoided, the safety of the working environment is guaranteed, and safety and reliability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of pebble coal discharge, and in particular to a pebble coal discharge device. Background Art

[0002] In coal-fired power plants, in order to ensure the fineness of the coal powder entering the boiler for combustion, the coal must be crushed in a pulverizer before entering the boiler for combustion. Since the crushed coal often contains impurities such as stones and iron blocks, the discharged stone coal needs to be collected and transported.

[0003] Pebble coal is usually discharged directly through the slag discharge outlet of the coal mill, and then received by the mobile coal hopper below and moved to other places for stacking. This method will generate a lot of dust, affecting the working environment; at the same time, only setting up the slag discharge channel is very easy to be blocked during use, and the discharge operation needs to be stopped for maintenance, which is inefficient. Summary of the invention

[0004] The invention provides a pebble coal discharging device, aiming to solve the problems in the prior art.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A pebble coal discharge device comprises a coal mill, a conveying mechanism and a plurality of discharge channels, wherein the conveying mechanism is fixedly installed below the coal mill; the plurality of discharge channels are evenly spaced and fixedly installed between the coal mill and the conveying mechanism, the upper ends of which are respectively connected to the discharge port of the coal mill, and the lower ends of which are respectively connected to the conveying mechanism.

[0007] The beneficial effects of the present invention are as follows: during the discharge process of the pebble coal, the pebble coal in the coal mill falls onto the conveying mechanism through multiple discharge channels, and then the conveying mechanism delivers the pebble coal to corresponding equipment;

[0008] During this process, when one or more of the discharge channels are blocked, the blocked discharge channels can be closed and repaired, and the remaining discharge channels can perform normal discharge operations.

[0009] The invention has a simple structure and a reasonable design, can realize multi-channel discharge of stone coal, is easy to repair and clean, and has high operating efficiency; at the same time, it can effectively treat the dust generated during the stone coal discharge process, avoid dust, ensure the safety of the working environment, and be safe and reliable.

[0010] Based on the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the plurality of discharge channels are respectively in the form of bent channel structures, and the plurality of discharge channels are straight channels except for the bending points.

[0012] The beneficial effect of adopting the above further scheme is that the structure is simple and the shape of the discharge channel is reasonably designed, which can not only realize the discharge operation of the pebble coal, but also provide a certain degree of buffering for the pebble coal to prevent the pebble coal from falling directly and causing a large amount of dust.

[0013] Furthermore, each straight portion in the plurality of discharge channels is respectively plugged with a plug plate.

[0014] The beneficial effects of adopting the above further scheme are simple structure and reasonable design. A plug plate is provided at the straight part of each discharge channel, and the plug plate can be used to cut off the pebble coal to avoid blockage. At the same time, the discharge speed of the pebble coal can be slowed down to avoid the generation of large amounts of dust.

[0015] Furthermore, each straight portion of the plurality of discharge channels is respectively provided with a socket penetrating inside and outside, and the plurality of plug plates are respectively inserted in the plurality of the sockets; a driving member is respectively fixedly installed on each straight portion of the plurality of discharge channels, and the plurality of driving members are respectively fixedly connected to the plurality of plug plates for driving the plurality of plug plates to move at the plurality of the sockets to seal or open the corresponding portions of the plurality of discharge channels.

[0016] The beneficial effects of adopting the above further solution are simple structure, reasonable design, using multiple driving parts to drive multiple plug boards to operate respectively, high degree of automation and easy operation.

[0017] Furthermore, the conveying mechanism includes a shell and a conveying assembly, the shell is fixedly installed below the multiple discharge channels and is respectively connected to the lower ends of the multiple discharge channels; the conveying assembly is fixedly installed in the shell, and a discharge port is provided on the lower side of one end of the shell, and the discharge port is located at the discharge end of the conveying assembly.

[0018] The beneficial effect of adopting the above further scheme is that when the pebble coal is discharged, the pebble coal discharged from multiple discharge channels is respectively sent to the conveying components in the outer shell, and then the conveying components send the pebble coal to the discharge port so that the pebble coal falls to the set equipment. The whole process is operated in the outer shell, which can effectively avoid dust and ensure the safety of the working environment.

[0019] Furthermore, it also includes a movable coal hopper, which is located below the discharge port.

[0020] The beneficial effects of adopting the above further scheme are simple structure, reasonable design, and utilizing a mobile coal hopper to receive the discharged pebble coal so as to transport the pebble coal away.

[0021] Furthermore, a discharge pipe is vertically fixedly connected to the discharge port, and the lower end of the discharge pipe is close to the feed port of the movable coal hopper.

[0022] The beneficial effects of adopting the above further scheme are simple structure, reasonable design, using the discharge pipe to shorten the distance between the discharge port and the mobile coal bucket, further avoiding dust and ensuring the safety of the working environment.

[0023] Furthermore, it also includes a coal powder processing mechanism, and the coal powder processing mechanism is connected to the shell through a pipeline.

[0024] The beneficial effects of adopting the above further scheme are simple structure, reasonable design, and utilizing the coal powder processing mechanism to process the dust in the housing to prevent the dust from being discharged into the environment from the discharge port.

[0025] Furthermore, the pulverized coal processing mechanism includes a settling box, an induced draft fan and a spray assembly. The settling box is connected to the outer shell through a pipeline; the spray assembly is fixedly installed on the top of the settling box, and the induced draft fan is connected to the upper part of the settling box through a pipeline.

[0026] The beneficial effect of adopting the above further scheme is that during the dust treatment process, the induced draft fan is used to form a negative pressure in the sedimentation box, and then the negative pressure is used to suck the dust in the shell into the sedimentation box. At the same time, the spray component is used for spraying to make the dust settle in the sedimentation box, making dust removal convenient.

[0027] Furthermore, a sewage outlet is provided on one side of the bottom of the sedimentation box, and a sewage discharge assembly for delivering the coal powder settled inside the sedimentation box to the sewage outlet is also provided on the sedimentation box.

[0028] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and the coal powder in the sedimentation box can be discharged from the sewage outlet regularly by using the sewage discharge component. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is an assembly diagram of the coal mill, the conveying mechanism and the plurality of discharge channels in the present invention;

[0031] Figure 3 It is a structural schematic diagram of the conveying mechanism in the present invention;

[0032] Figure 4 It is a structural schematic diagram of the coal powder processing mechanism in the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1. Coal mill; 2. Discharge channel; 3. Plug plate; 4. Driving part; 5. Casing; 6. Conveying assembly; 7. Mobile coal hopper; 8. Discharge pipe; 9. Sedimentation box; 10. Induced draft fan; 11. Spray assembly; 12. Sewage outlet; 13. Push plate; 14. Sewage cylinder. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0039] Example 1

[0040] like Figures 1 to 4 As shown, this embodiment provides a pebble coal discharge device, including a coal mill 1, a conveying mechanism and a plurality of discharge channels 2, wherein the conveying mechanism is fixedly installed below the coal mill 1; the plurality of discharge channels 2 are evenly spaced and fixedly installed between the coal mill 1 and the conveying mechanism, and the upper ends thereof are respectively connected to the discharge ports of the coal mill 1, and the lower ends thereof are respectively connected to the conveying mechanisms.

[0041] During the pebble coal discharge process, the pebble coal in the coal mill 1 falls onto the conveying mechanism through multiple discharge channels 2, and then the conveying mechanism delivers the pebble coal to the corresponding equipment;

[0042] During this process, when one or more of the discharge channels 2 are blocked, the blocked discharge channels 2 can be closed and repaired, and the remaining discharge channels 2 can perform normal discharge operations.

[0043] It should be noted that the above-mentioned coal mill 1 adopts the existing technology, and its specific structure and principle are not described in detail here.

[0044] Preferably, in this embodiment, there are two discharge channels 2, and the two discharge channels 2 are arranged side by side.

[0045] In addition, the middle part of the discharge port of the coal mill 1 is conical, and the design is reasonable, so as to ensure that the stone coal in the coal mill 1 can be discharged along the two discharge channels 2.

[0046] This embodiment has a simple structure and reasonable design, can realize multi-channel discharge of stone coal, is easy to repair and clean, and has high operating efficiency; at the same time, it can effectively deal with the dust generated during the discharge of stone coal, avoid dust, and ensure the safety of the working environment, which is safe and reliable.

[0047] Example 2

[0048] On the basis of Example 1, in this embodiment, the plurality of discharge channels 2 are respectively in the form of a bent channel body structure, and the plurality of discharge channels 2 are all straight channels except for the bending points.

[0049] The scheme has a simple structure and the shape of the discharge channel 2 is reasonably designed, which can not only realize the discharge operation of the pebble coal, but also provide a certain degree of buffering for the pebble coal to prevent the pebble coal from falling directly and causing a large amount of dust.

[0050] Preferably, in this embodiment, the cross-section of the straight portion of each discharge channel 2 is rectangular.

[0051] Example 3

[0052] On the basis of Example 2, in this embodiment, each straight portion of the plurality of discharge channels 2 is respectively plugged with a plug plate 3 .

[0053] The scheme has a simple structure and a reasonable design. A plug plate 3 is provided at the straight part of each discharge channel 2. The plug plate 3 can be used to cut off the pebble coal to avoid blockage. At the same time, the discharge speed of the pebble coal can be slowed down to avoid the generation of a large amount of dust.

[0054] Preferably, in this embodiment, each insert plate 3 is preferably a rectangular plate that matches the shape of the straight portion of the discharge channel 2 .

[0055] Alternatively, a plug plate 3 is provided at a partially straight portion of each discharge channel 2 .

[0056] Example 4

[0057] On the basis of Example 3, in this embodiment, each straight portion of the plurality of discharge channels 2 is respectively provided with a socket penetrating inside and outside, and the plurality of plug plates 3 are respectively inserted in the plurality of the sockets; a driving member 4 is respectively fixedly installed on each straight portion of the plurality of discharge channels 2, and the plurality of driving members 4 are respectively fixedly connected to the plurality of plug plates 3, for driving the plurality of plug plates 3 to move at the plurality of the sockets to seal or open the corresponding portions of the plurality of discharge channels 2.

[0058] This solution has a simple structure and a reasonable design. It utilizes multiple driving components to drive multiple plug boards 3 to operate respectively, has a high degree of automation, and is easy to operate.

[0059] Preferably, in this embodiment, the plurality of sockets are preferably respectively long strip-shaped openings, and their sizes and shapes are respectively matched with the plurality of plug boards 3 .

[0060] In addition, the three corresponding sides of each plug plate 3 are in contact with the inner wall of the corresponding discharge channel 2 .

[0061] Preferably, in this embodiment, the plurality of driving members 4 are preferably movable cylinders, which are respectively fixedly mounted on the outer walls of the plurality of discharge channels 2, and whose telescopic ends respectively telescope along the directions in which the plurality of plug boards 3 move, and are respectively fixedly connected to the plurality of plug boards 3. When in use, the plurality of movable cylinders are used to periodically drive the plurality of plug boards 3 to move.

[0062] In addition, the telescopic ends of the multiple moving cylinders are fixedly connected to the multiple plug plates 3 through connecting rods.

[0063] Example 5

[0064] On the basis of the above embodiments, in this embodiment, the conveying mechanism includes a shell 5 and a conveying component 6, the shell 5 is fixedly installed below the multiple discharge channels 2, and is respectively connected to the lower ends of the multiple discharge channels 2; the conveying component 6 is fixedly installed in the shell 5, and a discharge port is provided on the lower side of one end of the shell 5, and the discharge port is located at the discharge end of the conveying component 6.

[0065] When the pebble coal is discharged, the pebble coal discharged from multiple discharge channels 2 is respectively sent to the conveying components 6 in the outer shell 5, and then the conveying components 6 send the pebble coal to the discharge port so that the pebble coal falls to the set equipment. The whole process is operated in the outer shell 5, which can effectively avoid dust and ensure the safety of the working environment.

[0066] Preferably, in this embodiment, the housing 5 is preferably a rectangular shell, which is horizontally fixedly installed below the plurality of discharge channels 2 .

[0067] In addition, the above-mentioned conveying component 6 adopts a belt conveyor in the prior art, and its specific structure and principle are not described in detail here.

[0068] Example 6

[0069] On the basis of Example 5, this embodiment further includes a movable coal hopper 7, and the movable coal hopper 7 is located below the discharge port.

[0070] This scheme has a simple structure and a reasonable design, and utilizes the mobile coal hopper 7 to receive the discharged pebble coal so as to transport the pebble coal away.

[0071] The above-mentioned mobile coal bucket 7 adopts the existing technology, and wheels are evenly spaced at the bottom thereof.

[0072] Example 7

[0073] On the basis of Example 6, in this embodiment, a discharge pipe 8 is vertically fixedly connected to the discharge port, and the lower end of the discharge pipe 8 is close to the feed port of the movable coal hopper 7.

[0074] This solution has a simple structure and a reasonable design. The discharge pipe 8 is used to shorten the distance between the discharge port and the movable coal hopper 7, further avoiding dust and ensuring the safety of the working environment.

[0075] Preferably, in this embodiment, the discharge pipe 8 is preferably a straight pipe.

[0076] Alternatively, the discharge pipe 8 may also be an arc-shaped pipe, which can slow down the falling speed of the pebble coal to a certain extent.

[0077] Example 8

[0078] On the basis of any one of Embodiments 5 to 7, this embodiment further includes a coal powder processing mechanism, and the coal powder processing mechanism is connected to the shell 5 through a pipeline.

[0079] This solution has a simple structure and a reasonable design. The coal powder processing mechanism is used to process the dust in the housing 5 to prevent the dust from being discharged into the environment from the discharge port.

[0080] Example 9

[0081] On the basis of Example 8, in this embodiment, the coal powder processing mechanism includes a sedimentation box 9, an induced draft fan 10 and a spray assembly 11, and the sedimentation box 9 is connected to the outer shell 5 through a pipeline; the spray assembly 11 is fixedly installed on the top of the sedimentation box 9, and the induced draft fan 10 is connected to the upper part of the sedimentation box 9 through a pipeline.

[0082] During the dust treatment process, the induced draft fan 10 is used to form a negative pressure in the sedimentation box, and then the negative pressure is used to suck the dust in the shell 5 into the sedimentation box. At the same time, the spray component 11 is used to spray so that the dust is settled in the sedimentation box 9, which is convenient for dust removal.

[0083] Preferably, in this embodiment, the above-mentioned sedimentation box 9 is preferably a rectangular box, which is located beside the outer shell 5.

[0084] Preferably, in this embodiment, the above-mentioned spray assembly 11 includes a plurality of nozzles, and the plurality of nozzles are evenly spaced and fixedly installed on the top wall inside the sedimentation tank 9, and are respectively connected to the main pipe on the top of the sedimentation tank 9, one end of the main pipe is closed, and the other end is open and connected to the outlet of the water pump, and the inlet of the water pump is connected to the water supply tank through a pipeline.

[0085] The induced draft fan 10 mentioned above adopts the existing technology, and its specific structure and principle are not described in detail here.

[0086] Example 10

[0087] On the basis of Example 9, in this example, a sewage outlet 12 is provided on one side of the bottom of the sedimentation box 9 , and a sewage discharge component for delivering the coal powder settled inside the sedimentation box 9 to the sewage outlet 12 is also provided on the sedimentation box 9 .

[0088] This solution has a simple structure and a reasonable design, and the coal powder in the sedimentation box 9 can be discharged from the sewage outlet 12 regularly by using the sewage discharge component.

[0089] Preferably, in this embodiment, the above-mentioned sewage discharge assembly includes a push plate 13 and a sewage discharge cylinder 14, wherein the push plate 13 is vertically fixedly installed at the bottom of the sedimentation box 9; the sewage discharge cylinder 14 is fixedly installed outside the sedimentation box 9, and its telescopic end extends into the sedimentation box 9 and is fixedly connected to the push plate. When in use, the sewage discharge cylinder 14 can be started regularly to drive the push plate 13 to push the coal powder settled at the bottom of the sedimentation box 9 to the sewage discharge port 12 for discharge, which is convenient for cleaning, saving time and effort.

[0090] Preferably, in this embodiment, the push plate 13 is preferably a long strip plate-like structure, which extends from one side to the other side of the bottom of the sedimentation box 9.

[0091] The working principle of the present invention is as follows:

[0092] During the pebble coal discharge process, the pebble coal in the coal mill 1 falls into the housing 5 through the multiple discharge channels 2, and then the pebble coal is transported to the mobile coal hopper 7 by the conveying assembly 6, and finally the mobile coal hopper 7 transports the pebble coal away;

[0093] In this process, the induced draft fan 10 is used to form a negative pressure in the sedimentation box, and then the negative pressure is used to suck the dust in the shell 5 into the sedimentation box, and at the same time, the spray component 11 is used to spray so that the dust is settled in the sedimentation box 9, which is convenient for dust removal;

[0094] During the operation, when one or more discharge channels 2 are blocked, the blocked discharge channels 2 can be closed (using the movable cylinder to drive the plug plate 3 to seal the corresponding discharge channels 2) and repaired, and the remaining discharge channels 2 can perform normal discharge operations;

[0095] It should be noted that all electronic components involved in the present invention adopt the existing technology, and the above-mentioned components are electrically connected to the controller, and the control circuit between the controller and each component is the existing technology.

[0096] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0097] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0098] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A stone coal discharge device, characterized in that: It comprises a coal mill (1), a conveying mechanism and a plurality of discharge channels (2), wherein the conveying mechanism is fixedly installed below the coal mill (1); the plurality of discharge channels (2) are evenly spaced and fixedly installed between the coal mill (1) and the conveying mechanism, and the upper ends thereof are respectively connected to the discharge port of the coal mill (1), and the lower ends thereof are respectively connected to the conveying mechanism.

2. The stone coal discharge device according to claim 1, characterized in that: The plurality of discharge channels (2) are respectively in the form of a bent channel body structure, and the plurality of discharge channels (2) are all straight channels except for the bending points.

3. The stone coal discharge device according to claim 2, characterized in that: Each straight portion of the plurality of discharge channels (2) is respectively plugged with a plug plate (3).

4. The stone coal discharge device according to claim 3, characterized in that: Each straight portion of the plurality of discharge channels (2) is provided with a socket penetrating inside and outside, and the plurality of plug plates (3) are respectively plugged into the plurality of the sockets; a driving member (4) is respectively fixedly mounted on each straight portion of the plurality of discharge channels (2), and the plurality of driving members (4) are respectively fixedly connected to the plurality of plug plates (3) for driving the plurality of plug plates (3) to move at the plurality of the sockets to seal or open corresponding portions of the plurality of discharge channels (2).

5. The stone coal discharge device according to any one of claims 1 to 4, characterized in that: The conveying mechanism comprises a shell (5) and a conveying assembly (6); the shell (5) is fixedly mounted below the plurality of discharge channels (2) and is respectively connected to the lower ends of the plurality of discharge channels (2); the conveying assembly (6) is fixedly mounted in the shell (5); a discharge port is provided at the lower side of one end of the shell (5), and the discharge port is located at the discharge end of the conveying assembly (6).

6. The stone coal discharge device according to claim 5, characterized in that: It also comprises a movable coal hopper (7), and the movable coal hopper (7) is located below the discharge port.

7. The stone coal discharge device according to claim 6, characterized in that: A discharge pipe (8) is vertically fixedly connected to the discharge port, and the lower end of the discharge pipe (8) is close to the feed port of the movable coal hopper (7).

8. The stone coal discharge device according to claim 5, characterized in that: It also comprises a coal powder processing mechanism, which is connected to the outer shell (5) through a pipeline.

9. The stone coal discharge device according to claim 8, characterized in that: The pulverized coal processing mechanism comprises a sedimentation box (9), an induced draft fan (10) and a spray assembly (11); the sedimentation box (9) is connected to the outer shell (5) through a pipeline; the spray assembly (11) is fixedly installed on the top of the sedimentation box (9); the induced draft fan (10) is connected to the upper part of the sedimentation box (9) through a pipeline.

10. The stone coal discharge device according to claim 9, characterized in that: A sewage outlet (12) is provided on one side of the bottom of the sedimentation box (9), and a sewage discharge assembly for delivering coal powder settled inside the sedimentation box (9) to the sewage outlet (12) is also provided on the sedimentation box (9).

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