A pulverized coal processing device for a power plant

Abstract

The present invention discloses a coal powder processing device for power plants, which relates to the technical field of solid screening, and includes a shell and a separation assembly, wherein a screening channel and a powder discharge channel arranged below the screening channel are formed in the shell; the screening channel includes a plurality of columnar separation chambers and a first connecting channel arranged between adjacent columnar separation chambers, wherein the central axes of the plurality of columnar separation chambers are parallel to each other and are located in a set inclined plane, a set angle is formed between the set inclined plane and the horizontal plane, and the first connecting channel is arranged along the inclination direction of the set inclined plane and is located on the set inclined plane. The present invention can automatically discharge large-particle coal blocks separated from the coal powder, without the need for manual cleaning by the staff, thereby avoiding the accumulation of coal blocks affecting the separation of the coal powder, thereby improving the screening efficiency of the coal powder and reducing the labor intensity of the staff.

Description

Technical Field

[0001] The invention relates to the technical field of solid screening, in particular to a coal powder processing device for a power plant. Background Art

[0002] In a power plant, coal is generally used for power generation. The collected coal blocks are ground and crushed and then put into the coal bunker for combustion. However, some coal powder may be mixed with some large particles of coal blocks or coal particles, making it difficult to burn fully. Therefore, it is necessary to filter the coal powder before combustion to separate the large particles of coal blocks to ensure sufficient combustion.

[0003] Patent CN113399241B discloses a coal ash separation device, which includes a separation component, the separation component includes a separation barrel, a sieve plate and a limit piece, a cavity is arranged in the separation barrel, the cavity is formed by a depression from the top of the separation barrel, the limit piece is circumferentially arranged on the inner wall of the cavity, and the sieve plate is coaxially arranged in the cavity; and a blowing component, the blowing component includes a blowing pipe and an axial pipe, the axial pipe vertically passes through the blowing pipe and the blowing pipe can rotate around the axial pipe. This patent can effectively ensure the efficiency of separating coal ash by designing a separator, and at the same time, it is simple to disassemble and install, which can save a lot of time for the staff, and it is also convenient to clean the sieve plate and prevent coal ash blockage. There is no dead angle in the blowing, high cleanliness, simple operation and low cost.

[0004] However, it still has the following defects during use: it is inefficient when screening large quantities of coal powder, that is, workers are required to add coal powder, the amount of coal powder separated at one time is small, and after the coal powder is screened, the coal blocks cannot be automatically discharged, resulting in the accumulation of coal blocks in the separation barrel, affecting the separation efficiency of the coal powder. Summary of the invention

[0005] The object of the present invention is to provide a pulverized coal processing device for a power plant to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0007] The present invention provides a pulverized coal processing device for a power plant, comprising a shell and a separation assembly, wherein a screening channel and a pulverized coal discharge channel arranged below the screening channel are formed in the shell;

[0008] The screening channel includes a plurality of columnar separation chambers and a first connecting channel arranged between adjacent columnar separation chambers, wherein the central axes of the plurality of columnar separation chambers are parallel to each other and are located within a set inclined plane, a set angle is formed between the set inclined plane and the horizontal plane, and the first connecting channel is arranged along the inclination direction of the set inclined plane and is located on the set inclined plane; the shell is also provided with a feed channel and a discharge channel respectively connected to the uppermost columnar separation chamber and the lowermost columnar separation chamber, and the feed channel and the discharge channel are both located on the set inclined plane;

[0009] The separation assembly includes sieve plates respectively arranged in a plurality of columnar separation chambers, the sieve plates pass through the central axis of the columnar separation chamber, and the outer side of the sieve plates is closely attached to the inner wall of the columnar separation chamber, the sieve plates separate the columnar separation chamber into an upper coal slag chamber and a lower coal powder chamber, the sieve plates are also provided with a driving shaft coaxial with the columnar separation chamber, and both ends of the driving shaft pass through the shell, the driving shaft is connected with a driving structure, and the driving structure is used for driving the shaft to rotate forward and reversely to make the sieve plate swing, and during the swinging process of the sieve plate, two adjacent upper coal slag chambers can be gap-connected through the corresponding first connecting channel;

[0010] A second connecting channel is provided between the powder discharge channel in the shell and the bottom of the lower coal powder chamber of each columnar separation chamber, wherein the powder discharge channel is inclined.

[0011] Furthermore, the swinging directions of two adjacent sieve plates are opposite.

[0012] Furthermore, the set angle is 45 degrees.

[0013] Furthermore, a first arc-shaped baffle is provided at the bottom of the sieve plate close to the set slope and inclined downward, and the first arc-shaped baffle is tightly attached to the inner wall of the columnar separation chamber, and the outer arc surface of the first arc-shaped baffle is larger than the cross-section of the first connecting channel.

[0014] Furthermore, the pulverized coal processing device also includes a feeding assembly, which is used to convey the processed pulverized coal into the uppermost columnar separation chamber when the screen plate in the uppermost columnar separation chamber swings to a side close to the feeding channel.

[0015] Furthermore, the feeding assembly includes a second arc-shaped baffle plate arranged at one end of the screen plate inclined upward near a set slope, and the second arc-shaped baffle plate is tightly attached to the inner wall of the columnar separation chamber, and the second arc-shaped baffle plate includes a first arc segment located inside the upper coal ash chamber and a second arc segment located inside the lower pulverized coal chamber; when the screen plate is in a horizontal state, the first arc segment just completely blocks the feeding channel; when the screen plate swings to the side away from the feeding channel, the second arc segment completely blocks the feeding channel; the feeding assembly also includes a storage box connected to the end of the feeding channel away from the shell.

[0016] Furthermore, the driving structure includes gears assembled at both ends of the driving shaft, sliding parts symmetrically and slidingly assembled on both sides of the shell, racks assembled on the sliding parts and meshing with the gears, and a driving source. The sliding parts can only slide in a direction parallel to the set inclined plane, and the racks at adjacent driving shaft positions are respectively located on both sides of the set inclined plane. The driving source is used to drive the sliding parts to slide back and forth.

[0017] Furthermore, a limit strip is provided on the side wall of the columnar separation chamber below the first arc-shaped baffle, and the gear is installed on the end of the driving shaft through a limit damping member in a manner that it can rotate along the driving shaft with damping.

[0018] Furthermore, the driving source includes a rotating shaft rotatably installed above the discharge channel through a support plate, and both ends of the rotating shaft extend to the corresponding sliding parts and are equipped with cranks, a pull rod is connected between the crank and the corresponding sliding part, and both ends of the pull rod are rotatably connected to the sliding part and the crank, and the driving source also includes a motor, which is connected to the rotating shaft through a gear mechanism.

[0019] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0020] The invention can automatically discharge large coal lumps separated from coal powder without manual cleaning by workers, thus avoiding the accumulation of coal lumps affecting the separation of coal powder, thereby improving the screening efficiency of coal powder and reducing the labor intensity of workers.

[0021] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] Figure 1 It is a schematic diagram of the overall first-view structure of the present invention;

[0024] Figure 2 is a schematic diagram of the overall second viewing angle structure of the present invention;

[0025] Figure 3 yes Figure 1 Schematic diagram of the local structure at A;

[0026] Figure 4 It is a schematic diagram of the top view of the structure of the present invention;

[0027] Figure 5 yes Figure 4 AA structural diagram;

[0028] Figure 6 It is a side structural schematic diagram of the present invention;

[0029] Figure 7 yes Figure 6 Schematic diagram of the local structure at B;

[0030] Figure 8 is a schematic diagram of the structure of the present invention in a first state in cross section;

[0031] Fig. 9 is a schematic diagram of the structure of the second state of the cross-section of the present invention;

[0032] Fig.10 is a schematic diagram of the structure of the present invention in a sectional view in a third state;

[0033] Fig.11 is a schematic diagram of the second state separation process of the present invention;

[0034] Fig.12 It is a schematic diagram of the third state separation process of the present invention.

[0035] In the figure:

[0036] 1-shell; 2-screening channel; 21-columnar separation chamber; 211-upper coal ash chamber; 212-lower coal powder chamber; 22-first connecting channel; 23-feeding channel; 24-discharging channel; 3-powder discharge channel; 31-second connecting channel; 4-sieve plate; 41-drive shaft; 42-first arc-shaped baffle; 5-drive structure; 51-gear; 52-sliding member; 53-rack; 54-drive source; 541-rotating shaft; 542-crank; 543-pull rod; 544-motor; 55-limiting bar; 56-limiting damping member; 561-fixing ring; 562-rotating ring; 563-fan-shaped groove; 564-block; 565-reset spring; 6-feeding assembly; 61-second arc-shaped baffle; 611-first arc segment; 612-second arc segment; 62-storage box. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0038] See also Figure 1-Figure 12The present invention provides a pulverized coal processing device for a power plant, comprising a shell 1 and a separation assembly, wherein a screening channel 2 and a pulverized coal discharge channel 3 arranged below the screening channel 2 are formed in the shell 1.

[0039] like Figure 4 As shown, the screening channel 2 includes a plurality of columnar separation chambers 21 and a first connecting channel 22 arranged between adjacent columnar separation chambers 21, wherein the central axes of the plurality of columnar separation chambers 21 are parallel to each other and are located in a set inclined plane L, a set angle is formed between the set inclined plane L and the horizontal plane, and the first connecting channel 22 is arranged along the inclination direction of the set inclined plane L and is located on the set inclined plane L; the shell 1 is also provided with a feed channel 23 and a discharge channel 24 which are respectively connected to the uppermost columnar separation chamber 21 and the lowermost columnar separation chamber 21, and the feed channel 23 and the discharge channel 24 are both located on the set inclined plane L.

[0040] like Figure 1 and Figure 4 As shown, the separation assembly includes sieve plates 4 respectively arranged in a plurality of columnar separation chambers 21, the sieve plates 4 pass through the central axis of the columnar separation chamber 21, and the outer side of the sieve plates 4 is tightly attached to the inner wall of the columnar separation chamber 21, the sieve plates 4 separate the columnar separation chamber 21 into an upper coal ash chamber 211 and a lower coal powder chamber 212, and the sieve plates 4 are also provided with a driving shaft 41 coaxial with the columnar separation chamber 21, and both ends of the driving shaft 41 pass through the shell 1, the driving shaft 41 is connected to a driving structure 5, and the driving structure 5 is used to drive the shaft 41 to rotate forward and reverse to make the sieve plate 4 swing, and during the swinging process of the sieve plate 4, the two adjacent upper coal ash chambers 211 can be gap-connected through the corresponding first connecting channel 22.

[0041] like Figure 4 As shown, a second connecting channel 31 is provided between the powder discharge channel 3 in the shell 1 and the bottom of the lower coal powder chamber 212 of each columnar separation chamber 21, wherein the powder discharge channel 3 is inclined.

[0042] Combination Figure 4 , Fig.11 and Fig.12As shown, when in use, the coal powder to be processed enters the uppermost columnar separation chamber 21 from the feed channel 23. After entering the uppermost columnar separation chamber 21, the coal powder is in the upper coal slag chamber 211. At this time, the sieve plate 4 is driven by the driving structure 5 to swing left and right, so that the coal powder moves left and right on the top of the sieve plate 4. During the movement of the coal powder, small particles of coal powder fall into the lower coal powder chamber 212 through the sieve holes of the sieve plate 4 and enter the powder discharge channel 3 through the second connecting channel 31, while large particles of coal blocks are in the sieve plate 4 in the upper coal slag chamber 211. Since the two adjacent upper coal slag chambers 211 can be connected through the corresponding first connecting channel during the swinging of the sieve plate 4, The channel 22 is intermittently connected. When two adjacent upper coal ash chambers 211 are connected through the corresponding first connecting channel 22, the sieve plate 4 is tilted toward the corresponding first connecting channel 22, and the large-particle coal blocks and the coal powder that has not passed through the sieve holes of the sieve plate 4 will move toward the tilting direction of the sieve plate 4, and move to the second upper coal ash chamber 211 through the first connecting channel 22, and then continue to be screened in the second upper coal ash chamber 211, and so on and so forth until it moves to the last upper coal ash chamber 211, thereby completely separating the coal powder and the coal blocks, and the separated coal powder enters the powder discharge channel 3, and the separated coal blocks will be discharged from the discharge channel 24 under the swing of the sieve plate 4.

[0043] The invention can automatically discharge large coal lumps separated from coal powder without manual cleaning by workers, thus avoiding the accumulation of coal lumps affecting the separation of coal powder, thereby improving the screening efficiency of coal powder and reducing the labor intensity of workers.

[0044] like Fig.11 and Fig.12 As shown, in a specific embodiment of the present invention, the swing directions of two adjacent screen plates 4 are opposite. This design can prolong the residence time of the coal powder in different upper ash chambers 211, that is, the screening time, to ensure that the coal lumps in the coal powder are completely separated.

[0045] In a specific embodiment of the present invention, the degree of the set angle is 45-60 degrees, and preferably, the degree of the set angle is 45 degrees.

[0046] In order to prevent the coal blocks on the sieve plate 4 from accidentally falling into the lower coal powder chamber 212 after entering the first connecting channel 22 when the adjacent upper coal ash chamber 211 is just connected, Figure 4 As shown, in a specific embodiment of the present invention, a first arc-shaped baffle plate 42 is provided at the bottom of the sieve plate 4 inclined toward the lower end close to the set slope L, and the first arc-shaped baffle plate 42 is tightly attached to the inner wall of the columnar separation chamber 21, and the outer arc surface of the first arc-shaped baffle plate 42 is larger than the cross-section of the first connecting channel 22.

[0047] Based on the above design, during the swinging process of the screen plate 4, when the adjacent upper coal ash chambers 211 are just connected, that is, in the adjacent upper coal ash chambers 211, when the upper coal ash chamber 211 just overlaps with part of the first connecting channel 22, the first arc-shaped baffle 42 can block the other part of the first connecting channel 22 below the screen plate 4 to prevent coal blocks from falling into the lower coal powder chamber 212.

[0048] In order to improve the efficiency of coal powder without affecting the separation effect of coal powder and coal blocks, in this embodiment, the coal powder processing device also includes a feeding assembly 6, which is used to convey the processed coal powder into the top columnar separation chamber 21 when the screen plate 4 in the top columnar separation chamber 21 swings to a side close to the feeding channel.

[0049] Based on the above design, during the screening process, the coal powder can be divided into multiple batches for separate screening to avoid a large amount of coal powder forming accumulation on the screen plate 4 and affecting the screening effect. Specifically, during screening, the feeding assembly 6 conveys a certain amount of coal powder to the upper coal slag chamber 211 at the top through the feeding channel. After the coal powder completes a reciprocating swing of the screen plate 4, the coal blocks in the upper coal slag chamber 211 are conveyed to the next upper coal slag chamber 211. The feeding assembly 6 will convey another batch of coal powder to the upper coal slag chamber 211 at the top again to avoid the accumulation of coal blocks affecting the coal powder screening efficiency.

[0050] like Figure 4 As shown, in a specific embodiment of the present invention, the feeding assembly 6 includes a second arc-shaped baffle 61 arranged at one end of the screen plate 4 inclined upward near the set inclined plane L, and the second arc-shaped baffle 61 is tightly attached to the inner wall of the columnar separation chamber 21, and the second arc-shaped baffle 61 includes a first arc segment 611 located inside the upper coal ash chamber 211 and a second arc segment 612 located in the lower pulverized coal chamber; when the screen plate 4 is in a horizontal state, the first arc segment 611 just completely blocks the feeding channel; when the screen plate 4 swings to the side away from the feeding channel, the second arc segment 612 completely blocks the feeding channel; the feeding assembly 6 also includes a storage box 62 connected to the end of the feeding channel away from the shell 1.

[0051] Based on the above design, automatic quantitative addition of coal powder can be achieved, such as Figure 4 , Fig.11 and Fig.12As shown, specifically, the coal powder is stored in the storage box 62. During operation, the sieve plate 4 in the uppermost columnar separation chamber 21 is in the swinging process. When the sieve plate 4 is in a horizontal state, the first arc segment 611 just completely blocks the feeding channel, and the feeding channel 23 is in a closed state. When the sieve plate 4 is in the horizontal state and swings toward the side away from the feeding channel, the second arc segment 612 can block the feeding channel. When the sieve plate 4 is in the horizontal state and swings toward the side of the feeding channel, the first arc segment 611 can gradually open the feeding channel. Under the action of weight, the coal powder in the storage box 62 will be automatically replenished into the upper ash chamber 211 at the top. That is, the present invention automatically realizes automatic quantitative replenishment of coal powder through the swinging shell of the sieve plate 4.

[0052] In a specific embodiment of the present invention, the driving structure 5 includes gears 51 assembled at both ends of the driving shaft 41, sliding members 52 symmetrically and slidingly assembled on both sides of the shell 1, a rack 53 assembled on the sliding member 52 and meshing with the gear 51, and a driving source 54. The sliding member 52 can only slide in a direction parallel to the set inclined plane L. The racks 53 at adjacent driving shaft 41 positions are respectively located on both sides of the set inclined plane L. The driving source 54 is used to drive the sliding member 52 to slide back and forth.

[0053] That is, in the above-mentioned design, when working, the driving source 54 can drive the sliding member 52 to slide back and forth on the shell 1 along a direction parallel to the set inclined surface L. During the reciprocating sliding of the sliding member 52, the reciprocating swing of the screen plate 4 is realized through the engagement of the gear 51 and the rack 53, and the swinging directions of the two adjacent screen plates 4 are opposite.

[0054] like Figure 4 , Figure 6 and Figure 7 As shown, in a specific embodiment of the present invention, a limit strip 55 is provided on the side wall of the columnar separation chamber 21 below the first arc-shaped baffle plate 42, and the gear 51 is installed at the end of the driving shaft 41 through a limit damping member 56 in a manner that can dampen rotation along the driving shaft 41.

[0055] Based on the above design, when the rack 53 drives the screen plate 4 to swing away from the feeding channel through the meshing of the gear 51, when the first arc-shaped baffle 42 of the screen plate 4 contacts the limit bar 55, the rack 53 will continue to drive the gear 51 to rotate, while the screen plate 4 cannot rotate due to the limit of the limit bar 55, the screen plate 4 will be stationary at this position, while the gear 51 continues to rotate, and the gear 51 and the drive shaft 41 rotate relative to each other. Therefore, on the one hand, the screen plate 4 can vibrate after the first arc-shaped baffle 42 contacts the limit bar 55, which is beneficial to the transfer of coal blocks, and on the other hand, the retention time of the screen plate 4 at this position can be extended to ensure that the coal blocks on the screen plate 4 can be completely moved to the next upper coal ash chamber 211.

[0056] like Figure 7 As shown, specifically, the limit damping member 56 includes a fixed ring 561 fixed at the end of the driving shaft 41, and a rotating ring 562 rotatably arranged on the outside of the fixed ring 561, the rotating ring 562 is fixedly connected to the gear 51, and the inner side of the rotating ring 562 is symmetrically provided with a fan-shaped groove 563, and the fixed ring 561 is provided with a block 564 slidably arranged in the fan-shaped groove 563, and a return spring 565 is arranged between both sides of the block 564 and the two ends of the fan-shaped groove 563.

[0057] like Figure 2 and Figure 3 As shown, in a specific embodiment of the present invention, the driving source 54 includes a rotating shaft 541 rotatably installed above the discharge channel 24 through a support plate, and both ends of the rotating shaft 541 extend to the corresponding sliding member 52 and are equipped with cranks 542. A pull rod 543 is connected between the crank 542 and the corresponding sliding member 52, and both ends of the pull rod 543 are rotatably connected to the sliding member 52 and the crank 542 respectively. The driving source 54 also includes a motor 544, and the motor 544 is transmission-connected to the rotating shaft 541 through a gear 51 mechanism.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pulverized coal processing device for a power plant, characterized in that: It comprises a shell and a separation assembly, wherein a screening channel and a powder discharge channel arranged below the screening channel are formed in the shell; The screening channel includes a plurality of columnar separation chambers and a first connecting channel arranged between adjacent columnar separation chambers, wherein the central axes of the plurality of columnar separation chambers are parallel to each other and are located within a set inclined plane, a set angle is formed between the set inclined plane and the horizontal plane, and the first connecting channel is arranged along the inclination direction of the set inclined plane and is located on the set inclined plane; the shell is also provided with a feed channel and a discharge channel respectively connected to the uppermost columnar separation chamber and the lowermost columnar separation chamber, and the feed channel and the discharge channel are both located on the set inclined plane; The separation assembly includes sieve plates respectively arranged in a plurality of columnar separation chambers, the sieve plates pass through the central axis of the columnar separation chamber, and the outer side of the sieve plates is closely attached to the inner wall of the columnar separation chamber, the sieve plates separate the columnar separation chamber into an upper coal slag chamber and a lower coal powder chamber, the sieve plates are also provided with a driving shaft coaxial with the columnar separation chamber, and both ends of the driving shaft pass through the shell, the driving shaft is connected with a driving structure, and the driving structure is used for driving the shaft to rotate forward and reversely to make the sieve plate swing, and during the swinging process of the sieve plate, two adjacent upper coal slag chambers can be gap-connected through the corresponding first connecting channel; A second connecting channel is provided between the powder discharge channel in the shell and the bottom of the lower coal powder chamber of each columnar separation chamber, wherein the powder discharge channel is arranged obliquely; The swing directions of two adjacent screen plates are opposite; A first arc-shaped baffle is provided at the bottom of the sieve plate near the set slope and inclined downward, and the first arc-shaped baffle is closely attached to the inner wall of the columnar separation chamber, and the outer arc surface of the first arc-shaped baffle is larger than the cross section of the first connecting channel; The driving structure includes gears mounted on both ends of the driving shaft, sliding members symmetrically and slidingly mounted on both sides of the housing, racks mounted on the sliding members and meshing with the gears, and a driving source. The sliding members can only slide in a direction parallel to the set inclined plane, and the racks at adjacent driving shaft positions are respectively located on both sides of the set inclined plane. The driving source is used to drive the sliding members to slide back and forth. A limit strip is provided on the side wall of the columnar separation chamber below the first arc-shaped baffle, and the gear is installed on the end of the drive shaft through a limit damping member in a manner that it can rotate along the drive shaft with damping; When the rack drives the sieve plate to swing toward the side away from the feeding channel through the meshing of the gear, when the first arc-shaped baffle of the sieve plate contacts the limit bar, the rack will continue to drive the gear to rotate, but the sieve plate cannot rotate due to the limitation of the limit bar. The sieve plate will remain stationary in this position, while the gear continues to rotate, and the gear and the drive shaft will rotate relative to each other.

2. The pulverized coal processing device for a power plant according to claim 1, characterized in that: The degree of the set angle is 45 degrees.

3. The pulverized coal processing device for a power plant according to claim 1, characterized in that: The pulverized coal processing device also includes a feeding assembly, which is used to convey the processed pulverized coal into the uppermost columnar separation chamber when the screen plate in the uppermost columnar separation chamber swings to a side close to the feeding channel.

4. The pulverized coal processing device for a power plant according to claim 3, characterized in that: The feeding assembly includes a second arc-shaped baffle plate arranged at one end of the screen plate that is inclined upward near the set slope, and the second arc-shaped baffle plate is closely attached to the inner wall of the columnar separation chamber, and the second arc-shaped baffle plate includes a first arc section located inside the upper coal ash chamber and a second arc section located inside the lower pulverized coal chamber; When the screen plate is in a horizontal state, the first arc segment completely blocks the feeding channel; when the screen plate swings to the side away from the feeding channel, the second arc segment completely blocks the feeding channel; the feeding assembly also includes a storage box connected to the end of the feeding channel away from the shell.

5. The pulverized coal processing device for a power plant according to claim 1, characterized in that: The driving source includes a rotating shaft rotatably installed above the discharge channel through a support plate, and both ends of the rotating shaft extend to the corresponding sliding parts and are equipped with cranks. A pull rod is connected between the crank and the corresponding sliding part, and both ends of the pull rod are rotatably connected to the sliding part and the crank. The driving source also includes a motor, which is connected to the rotating shaft through a gear mechanism.

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