Pebble coal deslagging system

Abstract

The invention relates to a pebble coal deslagging system which comprises a coal hopper, a first-stage buffer device, a second-stage buffer device, a pulverized coal treatment device and a coal hopper conveying device, and the first-stage buffer device is installed in the coal hopper; the secondary buffer device is mounted at a discharge hole of the coal hopper, and the pulverized coal treatment device is communicated with the secondary buffer device; and the coal hopper conveying device is mounted below the secondary buffer device and is used for conveying the collecting hopper. The coal mill pebble coal slag discharging and conveying device has the beneficial effects of being compact in structure, reasonable in design, capable of achieving quick slag discharging and conveying of pebble coal of a coal mill, high in efficiency and low in manual labor intensity; meanwhile, pulverized coal generated in the deslagging process can be treated, the situation that the pulverized coal drifts in the environment and threatens the personal safety of operators is avoided, and safety and reliability are achieved.

Description

Technical Field

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

[0002] Coal pulverizer is an important auxiliary equipment of pulverized coal furnace. The coal pulverization process is the process of coal being broken and its surface area increasing. Coal is ground into coal powder in the coal pulverizer through three methods: crushing, breaking and grinding, which improves the combustion efficiency of coal. The stone coal is the waste at the separation point during the operation of the coal pulverizer.

[0003] After the coal mill is finished grinding, the stone coal is discharged by opening the slag discharge door, and the discharged stone coal falls vertically into the stone coal hopper, which is pushed by manpower for transportation. This slag discharge method has the following defects: 1. During the vertical fall of the stone coal, a large amount of coal powder is raised, which can easily cause pneumoconiosis to the workers in the factory and affect their health; 2. The stone coal falls directly, which has a great impact on the coal hopper and is easy to damage the coal hopper; 3. In this process, manual handling of the coal hopper is time-consuming and labor-intensive, and inefficient. Summary of the invention

[0004] The invention provides a stone coal slag discharge system, 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 stone coal slag discharge system includes a coal hopper, a primary buffer device, a secondary buffer device, a coal powder processing device and a coal hopper conveying device, wherein the primary buffer device is installed in the coal hopper; the secondary buffer device is installed at the discharge port of the coal hopper, and the coal powder processing device is connected to the secondary buffer device; the coal hopper conveying device is installed below the secondary buffer device and is used for conveying a collection hopper.

[0007] The beneficial effects of the present invention are as follows: during the slag discharge process, the pebble coal generated by the coal mill is discharged into the coal drop hopper, and the pebble coal collected in the coal drop hopper is buffered by the primary buffer device and the secondary buffer device in turn and falls into the collecting hopper on the coal hopper conveying device, thereby completing the slag discharge of the pebble coal;

[0008] In this process, the coal powder processing device is used to process the coal powder generated during the stone coal slag discharge process to prevent the coal powder from floating in the environment and threatening the personal safety of the operators. It is safe and reliable.

[0009] The invention has a compact structure and reasonable design, can realize rapid slag discharge and transportation of stone coal in coal mill, has high efficiency and low manual labor intensity; at the same time, can process coal powder generated in the slag discharge process, prevent coal powder from floating in the environment and threatening the personal safety of operators, and is safe and reliable.

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

[0011] Furthermore, the buffer device includes at least one primary buffer plate, each of which is obliquely installed in the coal hopper, and its upper end is rotatably connected to the coal hopper; the lower end of each primary buffer plate is connected to the coal hopper through an elastic member.

[0012] The beneficial effect of adopting the above further scheme is simple structure and reasonable design. During the falling process of the pebble coal, the primary buffer plate will be squeezed. Under the elastic force of the elastic part, the primary buffer plate will slowly flip downward to cushion the falling of the pebble coal and prevent the pebble coal from falling directly into the collecting bucket.

[0013] Furthermore, the elastic member includes a plurality of springs, one end of each of the plurality of springs is fixedly connected to the coal hopper, and the other end of each of the springs is fixedly connected to the lower end of the primary buffer plate.

[0014] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and utilizing multiple springs to buffer the primary buffer plate, thereby ensuring the buffering effect of the primary buffer plate.

[0015] Furthermore, the primary buffer device includes a plurality of primary buffer plates, and the plurality of primary buffer plates are evenly spaced and distributed around the inner wall of the coal hopper.

[0016] The beneficial effects of adopting the above further scheme are simple structure, reasonable design, and reasonable design of the number of primary buffer plates to ensure the buffering effect of the pebble coal.

[0017] Furthermore, the secondary buffer device includes a buffer cylinder and multiple secondary buffer plates. The buffer cylinder is vertically fixed at the discharge port of the coal hopper, and its upper end is connected to the discharge port of the coal hopper; the multiple secondary buffer plates are divided into two groups and are relatively distributed in the buffer cylinder.

[0018] The beneficial effects of adopting the above further scheme are simple structure, reasonable design, and use of multiple secondary buffer plates to further buffer the pebble coal entering the buffer cylinder, thereby ensuring the pebble coal buffering effect.

[0019] Furthermore, the plurality of secondary buffer plates in the two groups are arranged at an angle and are staggeredly distributed up and down in sequence.

[0020] The beneficial effects of adopting the above further solution are simple structure, reasonable distribution of multiple secondary buffer plates, and better buffering effect.

[0021] Furthermore, the pulverized coal processing device includes an induced draft fan, a collecting cylinder and a spray assembly. The collecting cylinder is horizontally fixedly arranged next to the buffer cylinder, and one end thereof is connected to the buffer cylinder; the other end of the collecting cylinder is open, and the induced draft fan is fixedly installed on the other end of the collecting cylinder; the spray assembly is fixedly installed on the upper side inside the collecting cylinder.

[0022] The beneficial effect of adopting the above further scheme is that during the coal powder processing process, the induced draft fan is used to form a negative pressure in the collecting cylinder, so that the coal powder enters the collecting cylinder from the buffer cylinder, and at the same time, the spray component is used to spray and settle the coal powder entering the collecting cylinder, and the processing effect is better.

[0023] Furthermore, the spray assembly includes a plurality of nozzles, and the plurality of nozzles are evenly spaced and distributed in a direction from one end to the other end of the collecting tube.

[0024] The beneficial effects of adopting the above further solution are simple structure, reasonable distribution of multiple nozzles and better coal powder sedimentation effect.

[0025] Furthermore, a guide plate is fixedly installed in an inclined manner inside the collecting tube, and a sewage outlet is provided at a position of the collecting tube corresponding to the lower end of the guide plate, and the lower end of the guide plate is close to the other end of the collecting tube; the coal powder processing device also includes a collecting box, the upper side of which is open and is located below the sewage outlet.

[0026] The beneficial effects of adopting the above further scheme are simple results and reasonable design. During the coal powder spraying and settling process, the guide plate is used to collect the settled coal powder in the collection box through the sewage outlet, and the collection effect is better.

[0027] Furthermore, the coal hopper conveying device includes a coal hopper conveyor, and the coal hopper conveyor is horizontally installed below the secondary buffer device.

[0028] The beneficial effect of adopting the above further scheme is simple structure and reasonable design. The coal bucket conveyor is used to sequentially send multiple collection buckets to the bottom of the secondary buffer device so as to collect the stone coal in sequence. There is no need for frequent manual replacement, which saves time and effort. 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 a schematic diagram of the internal structure of the primary buffer device in the present invention;

[0031] Figure 3 It is a schematic diagram of the internal structure of the secondary buffer device in the present invention;

[0032] Figure 4It is a schematic diagram of the internal structure of the coal powder processing device in the present invention.

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

[0034] 1. Coal hopper; 2. Primary buffer plate; 3. Spring; 4. Buffer cylinder; 5. Secondary buffer plate; 6. Induced draft fan; 7. Collecting cylinder; 8. Nozzle; 9. Guide plate; 10. Drain port; 11. Collecting box; 12. Coal hopper conveyor; 13. Collecting hopper. 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 4As shown, this embodiment provides a gravel coal slag discharge system, including a coal hopper 1, a primary buffer device, a secondary buffer device, a coal powder processing device and a coal hopper conveying device, wherein the primary buffer device is installed in the coal hopper 1; the secondary buffer device is installed at the discharge port of the coal hopper 1, and the coal powder processing device is connected to the secondary buffer device; the coal hopper conveying device is installed below the secondary buffer device and is used for conveying a collection hopper 13.

[0041] During the slagging process, the pebble coal generated by the coal mill is discharged into the coal hopper 1, and the pebble coal collected in the coal hopper 1 is buffered by the primary buffer device and the secondary buffer device in turn and falls into the collecting hopper 13 on the coal hopper conveying device, thus completing the slagging of the pebble coal;

[0042] In this process, the coal powder processing device is used to process the coal powder generated during the stone coal slag discharge process to prevent the coal powder from floating in the environment and threatening the personal safety of the operators. It is safe and reliable.

[0043] Preferably, in this embodiment, the coal hopper 1 has a structure with a thick upper end and a thin lower end.

[0044] This embodiment has a compact structure and reasonable design, and can realize rapid slag discharge and transportation of stone coal in the coal mill, with high efficiency and low labor intensity; at the same time, it can process the coal powder generated during the slag discharge process to prevent the coal powder from floating in the environment and threatening the personal safety of operators, and is safe and reliable.

[0045] Example 2

[0046] On the basis of Example 1, in this embodiment, the first-level buffer device includes at least one first-level buffer plate 2, each of which is obliquely installed in the coal hopper 1, and its upper end is rotatably connected to the coal hopper 1; the lower end of each of the first-level buffer plates 2 is connected to the coal hopper 1 through an elastic member.

[0047] This solution has a simple structure and a reasonable design. During the falling process, the pebble coal will squeeze the primary buffer plate 2, and the primary buffer plate 2 will slowly flip downward under the elastic force of the elastic member to cushion the falling of the pebble coal and prevent the pebble coal from falling directly into the collecting bucket 13.

[0048] Based on the above scheme, the shape of each of the above-mentioned primary buffer plates 2 is adapted to the shape of the coal hopper 1. For example, when the cross-section of the coal hopper 1 is rectangular, each primary buffer plate 2 can be preferably a rectangular plate; or, when the cross-section of the coal hopper 1 is circular, each primary buffer plate 2 can be preferably an arc-shaped plate.

[0049] Example 3

[0050] On the basis of Example 2, in this embodiment, the elastic member includes a plurality of springs 3, one end of the plurality of springs 3 is fixedly connected to the coal hopper 1, and the other end is fixedly connected to the lower end of the primary buffer plate 2.

[0051] This solution has a simple structure and a reasonable design, and utilizes a plurality of springs 3 to buffer the primary buffer plate 2 , thereby ensuring the buffering effect of the primary buffer plate 2 .

[0052] Preferably, in this embodiment, the number of the springs 3 is preferably three, and they are evenly spaced and distributed along the direction from one side to the other side of the corresponding primary buffer plate 2 .

[0053] Example 4

[0054] On the basis of any one of Examples 2 to 3, in this embodiment, the primary buffer device includes a plurality of primary buffer plates 2, and the plurality of primary buffer plates 2 are evenly spaced and distributed around the inner wall of the coal hopper 1.

[0055] The solution has a simple structure and a reasonable design. The number of the primary buffer plates 2 is reasonably designed to ensure the buffering effect of the pebble coal.

[0056] Preferably, in this embodiment, the above-mentioned first-level buffer plate 2 can be designed according to the shape of the coal hopper 1. For example, when the cross-section of the coal hopper 1 is rectangular, the first-level buffer plate 2 can preferably be four pieces; or, when the cross-section of the coal hopper 1 is circular, the first-level buffer plate 2 can preferably be two pieces.

[0057] Example 5

[0058] On the basis of the above embodiments, in this embodiment, the secondary buffer device includes a buffer cylinder 4 and a plurality of secondary buffer plates 5. The buffer cylinder 4 is vertically fixedly installed at the discharge port of the coal hopper 1, and its upper end is connected to the discharge port of the coal hopper 1; the plurality of secondary buffer plates 5 are evenly divided into two groups and relatively distributed in the buffer cylinder 4.

[0059] This solution has a simple structure and a reasonable design. It utilizes a plurality of secondary buffer plates 5 to further buffer the pebble coal entering the buffer cylinder 4, thereby ensuring the buffering effect of the pebble coal.

[0060] Preferably, in this embodiment, the buffer cylinder 4 is preferably a cylinder with a rectangular or circular cross-section.

[0061] Preferably, in this embodiment, the plurality of secondary buffer plates 5 are preferably rectangular plates or arc-shaped plates, which are respectively adapted to the shapes of the buffer cylinder 4 .

[0062] Example 6

[0063] On the basis of Example 5, in this embodiment, the plurality of secondary buffer plates 5 in the two groups are respectively arranged at an angle and are staggeredly distributed up and down in sequence.

[0064] This solution has a simple structure, the multiple secondary buffer plates 5 are reasonably distributed, and the buffering effect is better.

[0065] It should be noted that the plurality of secondary buffer plates 5 are reasonably distributed and will not affect the falling of the pebble coal, but will only slow down the falling rate of the pebble coal.

[0066] In addition, the included angles between the multiple secondary buffer plates 5 and the inner wall of the buffer tube 4 may be consistent or inconsistent.

[0067] Example 7

[0068] On the basis of any one of Examples 5 to 6, in this embodiment, the coal powder processing device includes an induced draft fan 6, a collecting cylinder 7 and a spray assembly, the collecting cylinder 7 is horizontally fixedly arranged next to the buffer cylinder 4, and one end thereof is connected to the buffer cylinder 4; the other end of the collecting cylinder 7 is open, and the induced draft fan 6 is fixedly installed at the other end of the collecting cylinder 7; the spray assembly is fixedly installed on the upper side of the collecting cylinder 7.

[0069] During the pulverized coal treatment process, the induced draft fan 6 is used to form a negative pressure in the collecting tube 7, so that the pulverized coal enters the collecting tube 7 from the buffer tube 4. At the same time, the spray component is used to spray and settle the pulverized coal entering the collecting tube 7, and the treatment effect is better.

[0070] Preferably, in this embodiment, the collecting cylinder 7 is preferably a cylinder with a rectangular or circular cross-section.

[0071] It should be noted that the induced draft fan 6 adopts the existing technology, and its specific structure and principle are not described in detail here.

[0072] Example 8

[0073] On the basis of Example 7, in this embodiment, the spray assembly includes a plurality of nozzles 8, and the plurality of nozzles 8 are evenly spaced and distributed along a direction from one end to the other end of the collecting tube 7.

[0074] This solution has a simple structure, a plurality of nozzles 8 are reasonably distributed, and the coal powder settling effect is better.

[0075] Based on the above scheme, multiple nozzles 8 are respectively connected to the main pipe fixed on the outer wall of the collecting tube 7, one end of the main pipe is connected to the outlet of the spray pump, and the inlet of the spray pump is connected to the water supply tank through a pipeline; the other end of the main pipe is closed.

[0076] Example 9

[0077] On the basis of any one of Examples 7 to 8, in this embodiment, a guide plate 9 is fixedly installed in an inclined manner in the collecting tube 7, and a sewage outlet 10 is provided at a position of the collecting tube 7 corresponding to the lower end of the guide plate 9, and the lower end of the guide plate 9 is close to the other end of the collecting tube 7; the coal powder processing device also includes a collecting box 11, the upper side of which is open and is located below the sewage outlet 10.

[0078] This solution is simple in result and reasonable in design. During the coal powder spraying and settling process, the guide plate 9 is used to collect the settled coal powder in the collection box 11 through the sewage outlet 10, and the collection effect is better.

[0079] Preferably, in this embodiment, the guide plate 9 is preferably a rectangular plate or an arc-shaped plate, and its specific shape is adapted to the collecting tube 7 .

[0080] In addition, two sides of the guide plate 9 are respectively attached to and fixedly connected to the inner wall of the collecting tube 7 .

[0081] Preferably, in this embodiment, the sewage outlet 10 may be a rectangular outlet or a circular outlet.

[0082] Preferably, in this embodiment, the collection box 11 is preferably a rectangular box.

[0083] It should be noted that the sewage outlet 10 is some distance away from the induced draft fan 6 , and the settled coal powder flowing downward along the guide plate 9 directly falls from the sewage outlet 10 into the collecting box 11 , which will not affect the operation of the induced draft fan 6 .

[0084] In addition, Figure 1 The relative positions of the various components are merely indicated. In actual application, the collecting box 11 is placed on the ground, which is located on one side of the coal hopper conveying device.

[0085] Example 10

[0086] On the basis of the above embodiments, in this embodiment, the coal hopper conveying device includes a coal hopper conveyor 12, and the coal hopper conveyor 12 is horizontally installed below the secondary buffer device.

[0087] The scheme has a simple structure and a reasonable design. The coal bucket conveyor 12 is used to sequentially deliver multiple collecting buckets 13 to the bottom of the secondary buffer device so as to sequentially collect the stone coal without frequent manual replacement, thus saving time and labor.

[0088] Based on the above scheme, a valve is fixedly installed at the lower end of the buffer cylinder 4, and the valve is preferably a manual valve. During the operation, when the stone coal in the collecting bucket 13 below the buffer cylinder 4 is almost full, the operator can manually close it; then, the coal bucket conveyor 12 delivers the next collecting bucket 13 to the bottom of the buffer cylinder 4.

[0089] In addition, when one of the collecting buckets 13 is located directly below the buffer tube 4, the coal bucket conveyor 12 stops running; when the corresponding collecting bucket 13 is full of stone coal, the coal bucket conveyor 12 continues to run until the next collecting bucket 13 is located directly below the buffer tube 4.

[0090] The working principle of the present invention is as follows:

[0091] During the slag discharge process, the pebble coal generated by the coal mill is discharged into the coal drop hopper 1. During the falling process, the pebble coal collected in the coal drop hopper 1 will first squeeze multiple primary buffer plates 2. The multiple primary buffer plates 2 will slowly turn downward under the elastic force of the elastic member to provide primary buffering for the falling of the pebble coal.

[0092] Then, the pebble coal falling into the buffer cylinder 4 sequentially squeezes the multiple secondary buffer plates 5 to perform secondary buffering on the pebble coal entering the buffer cylinder 4, thereby ensuring the buffering effect of the pebble coal;

[0093] Finally, the pebble coal after the primary and secondary buffering falls into the corresponding collecting bucket 13 on the coal bucket conveyor 12, completing the slag discharge of the pebble coal;

[0094] In this process, the induced draft fan 6 is used to form a negative pressure in the collecting tube 7, so that the coal powder enters the collecting tube 7 from the buffer tube 4, and the spray component is used to spray and settle the coal powder entering the collecting tube 7; the settled coal powder is discharged into the collecting box 11 through the sewage outlet 10 under the guidance of the guide plate 9.

[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 slag removal system, characterized by: The invention comprises a coal hopper (1), a primary buffer device, a secondary buffer device, a coal powder processing device and a coal hopper conveying device, wherein the primary buffer device is installed in the coal hopper (1); the secondary buffer device is installed at the discharge port of the coal hopper (1); the coal powder processing device is connected to the secondary buffer device; and the coal hopper conveying device is installed below the secondary buffer device and is used for conveying a collection hopper (13).

2. The stone coal slag removal system according to claim 1, characterized in that: The primary buffer device comprises at least one primary buffer plate (2), each of which is obliquely installed in the coal hopper (1), and its upper end is rotatably connected to the coal hopper (1); the lower end of each primary buffer plate (2) is connected to the coal hopper (1) via an elastic member.

3. The stone coal slag removal system according to claim 2, characterized in that: The elastic member comprises a plurality of springs (3), one end of each of the plurality of springs (3) being fixedly connected to the coal hopper (1), and the other end of each of the plurality of springs (3) being fixedly connected to the lower end of the primary buffer plate (2).

4. The stone coal slag removal system according to claim 2, characterized in that: The primary buffer device comprises a plurality of primary buffer plates (2), and the plurality of primary buffer plates (2) are evenly spaced and distributed around the inner wall of the coal hopper (1).

5. The stone coal slag removal system according to any one of claims 1 to 4, characterized in that: The secondary buffer device comprises a buffer cylinder (4) and a plurality of secondary buffer plates (5); the buffer cylinder (4) is vertically fixedly installed at the discharge port of the coal drop hopper (1), and its upper end is connected to the discharge port of the coal drop hopper (1); the plurality of secondary buffer plates (5) are evenly divided into two groups and relatively distributed in the buffer cylinder (4).

6. The stone coal slag removal system according to claim 5, characterized in that: The plurality of secondary buffer plates (5) in the two groups are arranged obliquely and are staggered in sequence up and down.

7. The stone coal slag removal system according to claim 5, characterized in that: The pulverized coal processing device comprises an induced draft fan (6), a collecting cylinder (7) and a spray assembly. The collecting cylinder (7) is horizontally fixedly arranged beside the buffer cylinder (4), and one end of the collecting cylinder (7) is connected to the buffer cylinder (4); the other end of the collecting cylinder (7) is open, and the induced draft fan (6) is fixedly installed at the other end of the collecting cylinder (7); the spray assembly is fixedly installed on the upper side of the collecting cylinder (7).

8. The stone coal slag removal system according to claim 7, characterized in that: The spray assembly comprises a plurality of nozzles (8), and the plurality of nozzles (8) are evenly spaced and distributed in a direction from one end to the other end of the collecting cylinder (7).

9. The stone coal slag removal system according to claim 7, characterized in that: A guide plate (9) is fixedly installed in an inclined manner in the collecting tube (7); a sewage outlet (10) is provided in the collecting tube (7) at a position corresponding to the lower end of the guide plate (9); the lower end of the guide plate (9) is close to the other end of the collecting tube (7); the pulverized coal processing device also includes a collecting box (11); the upper side of the collecting box (11) is open and is located below the sewage outlet (10).

10. The stone coal slag removal system according to any one of claims 1 to 4, characterized in that: The coal hopper conveying device comprises a coal hopper conveyor (12), and the coal hopper conveyor (12) is horizontally installed below the secondary buffer device.

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