Pebble coal discharging and dust removing device

Abstract

The utility model relates to a pebble coal discharging and dust removing device which comprises a discharging channel and a sealing mechanism which are communicated with each other, the frame hopper is communicated with the sealing mechanism and is used for loading pebble coal; the air inlet pipeline is communicated with the frame hopper and is used for receiving primary air; two ends of the ventilation pipeline are respectively communicated with the air inlet pipeline and the discharging channel; and a first on-off assembly and a second on-off assembly. Through the cooperation of the ventilation pipeline, the first on-off assembly and the second on-off assembly, when pebble coal is normally discharged in the coal milling process, primary air can directly pass through the frame hopper and then reaches the coal mill, so that the pebble coal can be directly discharged in the coal milling process, and the coal milling efficiency is improved. And dust attached to pebble coal is automatically taken away by utilizing airflow formed by primary air, so that the dust returns to the coal mill again, the overflow of the dust can be reduced in the pebble coal discharging process, and meanwhile, the waste of the dust is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of equipment related to power generation systems, in particular to a stone coal discharge dust removal device. Background Art

[0002] In the current power generation system, when the entire coal grinding process is in progress, the pebble coal that cannot be ground properly is discharged from the slag discharge port of the coal mill, and is stored in the frame bucket after passing through the sealing mechanism. When the frame bucket is full and needs to be replaced, the sealing mechanism is kept in a closed state, so that the frame bucket can be removed and unloaded or replaced. Since the pebble coal is stained with a certain amount of dust, the internal pressure of the frame bucket will be released when it is removed, causing the dust to be sprayed out, which is easy to cause dust in the surrounding environment, making the surrounding environment easily polluted. In view of this, it is necessary for the present application to provide a device that can further improve the current problem. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the following technical problems in the prior art: During the slag discharge process of the coal mill, the surface of the stone coal will be contaminated with a certain amount of dust, which will easily cause dust when discharged under the effect of pressure release. In order to solve this technical problem, the utility model provides the following technical solutions:

[0005] A pebble coal discharge and dust removal device comprises a discharge channel and a sealing mechanism connected to each other, and:

[0006] A frame bucket is connected to the sealing mechanism and is used for loading pebble coal;

[0007] An air inlet pipeline is connected to the frame bucket and is used to receive primary air;

[0008] A ventilation pipeline, both ends of which are connected to the air inlet pipeline and the discharge channel respectively;

[0009] A first on-off component and a second on-off component, wherein the first on-off component is arranged in the air inlet pipeline, and the second on-off component is arranged in the ventilation pipeline.

[0010] As a preferred technical solution for a stone coal discharge and dust removal device, there are at least two second on-off components, which are respectively close to the two end positions of the ventilation pipeline.

[0011] As a preferred technical solution for a stone coal discharge and dust removal device, the frame bucket and the sealing mechanism are connected through a connecting channel, and a cylinder is provided on the connecting channel. A movable plug is arranged in the cylinder and is linked with the first on-off component. When primary air passes through the first on-off component, the piston moves toward the connecting channel.

[0012] As a preferred technical solution for a stone coal discharge and dust removal device, one end of the cylinder is connected to the outside through an exhaust pipe, an air storage chamber is formed in the cylinder and is located between the exhaust pipe and the movable plug, an air guide pipe is connected between the unloading channel and the air inlet pipe, at least two third on-off components are arranged on it, the air storage chamber is connected in series to the air guide pipe, and a fourth on-off component is arranged on the exhaust pipe.

[0013] As a preferred technical solution for a pebble coal discharge and dust removal device, a plurality of limit blocks are constructed in the cylinder.

[0014] As an optimal technical solution for a pebble coal discharge and dust removal device, a bearing plate is provided inside the frame bucket to form a gas storage area and a storage area. The storage area is used to load the pebble coal, the bearing plate is constructed with evenly distributed air holes, and the gas storage area is used to connect to the air inlet pipeline.

[0015] As a preferred technical solution for a stone coal discharge dust removal device, a plurality of partitions are arranged in the gas storage area, and the plurality of partitions are staggeredly distributed.

[0016] The beneficial effect of the pebble coal discharge and dust removal device provided by the utility model is that through the cooperation of the ventilation pipeline and the first on-off component and the second on-off component, when the pebble coal is discharged normally during the coal pulverizing process, the primary air can directly pass through the frame bucket to reach the coal mill, so that during the coal pulverizing process, the airflow formed by the primary air can automatically take away the dust attached to the pebble coal, and the dust can be returned to the coal mill again, thereby reducing the overflow of dust during the pebble coal discharge process and reducing the waste of dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 It is a schematic diagram of the overall gas path layout of the utility model.

[0019] Figure 2It is a partial structural stereoscopic schematic diagram of the utility model.

[0020] Figure 3 For the utility model Figure 2 Diagram of the internal structure of the middle part.

[0021] Figure 4 It is a schematic diagram of the arrangement of part of the gas circuit in the utility model.

[0022] Figure 5 This is a schematic diagram of the internal structure of the frame in the utility model.

[0023] Figure 6 For the utility model Figure 5 Another perspective view of .

[0024] Figure numerals: 1. frame; 2. air inlet pipe; 3. ventilation pipe; 4. first on-off assembly; 5. second on-off assembly; 6. connecting channel; 7. cylinder; 8. movable plug; 9. exhaust pipe; 10. air storage chamber; 11. air guide pipe; 12. third on-off assembly; 13. fourth on-off assembly; 14. limit block; 15. bearing plate; 16. air storage area; 17. storage area; 18. air vent; 19. partition. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] Reference Figure 1, which is the first embodiment of the utility model, and this embodiment provides a stone coal discharge dust removal device, including a sealing mechanism, and the connecting section between the sealing mechanism and the coal mill is referred to as a discharge channel in the utility model. In addition, the utility model also includes the following parts:

[0030] A frame bucket 1, which is detachably connected to the sealing mechanism and is used for loading stone coal;

[0031] The air inlet pipeline 2 is also detachably connected to the frame 1 and is used to receive primary air;

[0032] The ventilation pipeline 3, both ends of which are connected to the air inlet pipeline 2 and the discharge channel respectively;

[0033] A first on-off component 4 and a second on-off component 5, both of which are used to control the on-off of the diameter of the pipeline at which they are located. The first on-off component 4 is arranged in the air inlet pipeline 2, and the second on-off component 5 is arranged in the ventilation pipeline 3;

[0034] Based on the above, during the assembly process of the utility model, the lower end of the slag discharge port of the coal mill is connected to the discharge channel, the sealing mechanism and the frame bucket 1 in sequence. When the entire system is running, in the first state, the first on-off component 4 keeps the air inlet pipeline 2 in a conducting state, and the sealing mechanism is in an open state, and the second on-off component 5 keeps the ventilation pipeline 3 in a closed state, and the primary air directly enters the frame bucket 1 through the air inlet pipeline 2, and finally enters the coal mill through the sealing mechanism, the discharge channel and the slag discharge port in sequence, completing the air intake process of the coal mill. When the frame bucket 1 is fully loaded and needs to be replaced, it enters the second state, that is, the sealing mechanism remains closed, and the first on-off component 4 keeps the air inlet pipeline 2 closed, and the second on-off component 5 keeps the ventilation pipeline 3 conducting. At this time, the primary air normally enters the entire coal mill system through the ventilation pipeline 3, and the frame bucket 1 can be normally disassembled and replaced, and after the replacement is completed, it can continue to enter the first state;

[0035] As described above, when the primary wind passes through the frame bucket 1, the pebble coal stored in the frame bucket 1 will be blown by the primary wind, so that the coal dust attached to the pebble coal can be fully taken away and returned to the coal mill, thereby fully reducing the amount of dust on the pebble coal, so that when the frame bucket 1 is disassembled, the dust phenomenon caused by the large amount of dust attached to the pebble coal can be reduced. In addition, the dust on the pebble coal can be collected again by the primary wind, so as to reduce the waste of coal powder resources.

[0036] Further, see Figure 1There are at least two second on-off components 5, which are respectively close to the two end positions of the ventilation pipeline 3, so that when the ventilation pipeline 3 is kept in a closed state, a part of the air pressure can be sealed in the ventilation pipeline 3. When switching back to the second state, the part of the air pressure is released, so that the dust falling into the ventilation pipeline 3 can be flushed out instantly.

[0037] Further, see Figure 2 and Figure 3 The frame bucket 1 is connected to the sealing mechanism through a connecting channel 6. The frame bucket 1 and the connecting channel 6 are configured to be detachably connected, and the connecting channel 6 and the sealing mechanism are configured to be fixedly connected. A cylinder 7 is connected to the connecting channel 6, and a movable plug 8 is arranged in the cylinder 7. It maintains linkage with the first on-off component 4. When the first state is performed, the piston moves toward the connecting channel 6. Conversely, when the second state is performed, the movable plug 8 moves in another direction. Therefore, when the frame bucket 1 is replaced, the movable plug 8 moves away from the connecting channel 6, so that the internal pressure of the connecting channel 6 and the frame bucket 1 will be released, so that when the frame bucket 1 is removed, the pressure is released in advance, thereby further reducing the occurrence of dust.

[0038] Further, see Figure 3-4 As for the connection form between the movable plug 8 and the first on-off assembly 4, specifically, one end of the cylinder 7 is connected to the outside through the exhaust pipe 9, and the space between the exhaust pipe 9 and the movable plug 8 in the cylinder 7 is referred to as the air storage chamber 10. An air guide pipe 11 is provided between the discharge channel and the air inlet pipe 2, and at least two third on-off assemblies 12 are arranged on the air storage chamber 10. The air storage chamber 10 is connected in series to the air guide pipe 11. The positional relationship between the two third on-off assemblies 12 and the air storage chamber 10 is as shown in FIG. Figure 4 As shown, the exhaust pipe 9 is provided with a fourth on-off assembly 13. When entering the first state, the fourth on-off assembly 13 keeps the exhaust pipe 9 closed, and the two third on-off assemblies 12 are both kept on, so that the air pipe 11 is in a conducting state, so that a part of the primary air passes through the air pipe 11 and reaches the unloading channel. Since the space of the air pipe 11 plus the air storage chamber 10 is much smaller than the space in the frame bucket 1, when the primary air enters therein, its internal pressure is slightly greater than the space in the frame bucket 1, so that the movable plug 8 moves toward the side of the frame bucket 1. When switching to the second state, the fourth on-off assembly 13 is opened, and the air storage chamber 10 is opened to the outside. The pressure release causes the piston to move away from the frame bucket 1, thereby increasing the internal space of the frame bucket 1, and the pressure is reduced in advance before unloading.

[0039] Further, see Figure 3A plurality of limit blocks 14 are constructed in the cylinder 7, and the limit blocks 14 can limit the moving path of the movable plug 8 so that it can move within a certain range.

[0040] Further, see Figure 5 and Figure 6 A bearing plate 15 is provided inside the frame bucket 1, and the inside of the frame bucket 1 is divided into a gas storage area 16 and a storage area 17 by the bearing plate 15. The storage area 17 is used to load stone coal. The bearing plate 15 is configured with evenly distributed air holes 18. The gas storage area 16 is used to connect to the air inlet pipeline 2. The primary air first enters the gas storage area 16, and then enters the storage area 17 through the air holes 18, so that the primary air can fully blow the stone coal at the bottom position of the storage area 17, thereby increasing the range of action of the airflow on the stone coal.

[0041] Further, see Figure 6 A plurality of partitions 19 are arranged in the gas storage area 16 , and the plurality of partitions 19 are staggered so that when the primary wind enters, it flows through the gas storage area 16 in an S-shaped path, thereby further improving the filling effect of the airflow in the gas storage area 16 .

[0042] Furthermore, in the utility model, for multiple pipelines, such as the air inlet pipeline 2, the ventilation pipeline 3, the air guide pipeline 11 and the exhaust pipeline 9, a pipeline body structure or a channel structure can be adopted, and multiple on-off components can adopt a valve body structure. Preferably, structures such as electric valve components can be adopted, and a linkage relationship can be established between them. For example, a PLC controller or a system internal controller can be used for linkage control, so as to realize the switching between the first state and the second state more smoothly.

[0043] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A dust removal device for discharging stone coal, comprising a discharge channel and a sealing mechanism connected to each other, characterized in that: Also includes: A frame bucket (1) is connected to the sealing mechanism and is used to load stone coal; An air inlet pipeline (2) is connected to the frame (1) and is used to receive primary air; A ventilation pipeline (3), both ends of which are respectively connected to the air inlet pipeline (2) and the discharge channel; A first on-off component (4) and a second on-off component (5), wherein the first on-off component (4) is arranged in the air inlet pipeline (2), and the second on-off component (5) is arranged in the ventilation pipeline (3).

2. The dust removal device for discharging stone coal according to claim 1, characterized in that: There are at least two second on-off components (5), which are respectively located close to two end positions of the ventilation pipeline (3).

3. The dust removal device for discharging stone coal according to claim 1, characterized in that: The frame bucket (1) is connected to the sealing mechanism via a connecting channel (6), a cylinder (7) is provided on the connecting channel (6), a movable plug (8) is arranged in the cylinder (7), and the movable plug (8) is linked with the first on-off component (4). When primary air passes through the first on-off component (4), the movable plug (8) moves toward the connecting channel (6).

4. The dust removal device for discharging stone coal according to claim 3 is characterized in that: One end of the cylinder (7) is connected to the outside through an exhaust pipeline (9); an air storage chamber (10) is formed in the cylinder (7) and is located between the exhaust pipeline (9) and the movable plug (8); an air guide pipeline (11) is provided between the discharge channel and the air inlet pipeline (2), and at least two third on-off components (12) are arranged on the air guide pipeline; the air storage chamber (10) is connected in series to the air guide pipeline (11); and a fourth on-off component (13) is arranged on the exhaust pipeline (9).

5. The dust removal device for discharging stone coal according to claim 3, characterized in that: A plurality of limit blocks (14) are constructed inside the cylinder (7).

6. The dust removal device for discharging stone coal according to claim 1, characterized in that: The frame bucket (1) is provided with a bearing plate (15) to form a gas storage area (16) and a storage area (17). The storage area (17) is used to load stone coal. The bearing plate (15) is provided with evenly distributed air holes (18). The gas storage area (16) is used to connect to the air inlet pipeline (2).

7. The dust removal device for discharging stone coal according to claim 6, characterized in that: A plurality of partitions (19) are arranged in the gas storage area (16), and the plurality of partitions (19) are staggeredly distributed.

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