CN112337546A - Feeding system is smashed with fire coal to power boiler based on PLC - Google Patents
Feeding system is smashed with fire coal to power boiler based on PLC Download PDFInfo
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- CN112337546A CN112337546A CN202011071660.0A CN202011071660A CN112337546A CN 112337546 A CN112337546 A CN 112337546A CN 202011071660 A CN202011071660 A CN 202011071660A CN 112337546 A CN112337546 A CN 112337546A
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- hopper
- fixedly connected
- box
- feeding
- feeding box
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/286—Feeding devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to the technical field of power plants and discloses a PLC-based coal-fired crushing and feeding system for a power plant boiler, which comprises a feeding box, wherein the upper end of the feeding box is fixedly connected with a feeding hopper, a group of crushing rollers corresponding to the feeding hopper are arranged above the inner part of the feeding box, a separation plate is arranged below the crushing rollers, the separation plate is fixedly arranged in the feeding box, a plurality of uniformly distributed separation holes are formed in the upper end of the separation plate, a material pushing plate is arranged between the separation plate and the group of crushing rollers, and the material pushing plate is arranged in the feeding box in a sliding manner. The invention effectively improves the crushing effect of the coal, ensures that the coal fed into the boiler for combustion can be fully combusted, reduces the waste of coal resources, simultaneously can avoid the coal powder generated by crushing from flying everywhere to influence the surrounding environment, causes inconvenient cleaning, and can further reduce the waste of the coal.
Description
Technical Field
The invention relates to the technical field of power plants, in particular to a PLC-based coal-fired pulverizing and feeding system for a power plant boiler.
Background
A power plant refers to a power plant that converts some form of raw energy into electrical energy for use in stationary facilities or for transportation, such as a thermal, hydraulic, steam, diesel, or nuclear power plant.
Through retrieval, chinese patent publication No. CN210624560U discloses a coal-fired pulverizing and feeding device for a power plant boiler, which comprises a storage bin with a lower end connected with a feed pipe, a pulverizing chamber is communicated between the feed pipe and a feed pipe, one end of the feed pipe, which is opposite to the storage bin, is communicated with a spray pipe through a connecting pipe, the feed pipe is rotatably connected with a spiral feed rod for conveying pulverized coal from the storage bin to the connecting pipe, one end of the spiral feed rod is provided with a first motor, the connecting pipe is arranged in an inclined manner, one end of the spray pipe, which is close to the storage bin, is provided with an air inlet pipe, and the air inlet pipe; a crushing shaft is arranged in the crushing chamber, and a second motor provides power for the crushing shaft through a transmission belt;
through retrieval, chinese patent publication No. CN206661351U discloses an integrated device for supplying, conveying, impurity removing and crushing boiler coal, wherein the conveying motor is mounted on a second frame, the rollers are mounted on the second frame in rows, the rollers are in transmission connection with a belt of the conveying motor, the conveying belt is wound on the rollers in rows, the conveying belt is arranged in an inclined manner, the feeding bin is mounted on the first frame, the upper portion of the feeding bin is open, a discharging port is formed at the bottom of the feeding bin, the discharging port is located above the rear portion of the conveying belt, and the crushing device is composed of an upper cover, a shell, a rotating shaft, a crushing roller, a crushing motor and a fourth frame;
through retrieval, the chinese patent publication No. CN206094143U discloses a boiler coal-fired feeding system, which comprises a coal hopper for accommodating raw coal, wherein a first coal feeder is arranged at the bottom of the coal hopper, and a first belt conveyor is arranged at an outlet of the first coal feeder, and is characterized in that the first belt conveyor penetrates through a dryer, an outlet of the first belt conveyor is connected with a screening device, a heating device is arranged on the screening device, and a crusher is arranged at an outlet of the screening device;
the first and the third publications are all that the raw coal is crushed to make the raw material fully combusted, but because the crushing effect on the coal is limited, the situation that part of coal blocks are still large after being crushed exists, and the subsequent coal materials are still fully combusted to a certain extent;
in the second and third publications, there is no mechanism for re-crushing the large coal lumps after crushing, which is not favorable for crushing the raw material.
Disclosure of Invention
The invention aims to solve the problems that coal is crushed before being used as a raw material in the prior art, but the crushed blocks are different in size, and the coal is wasted to a certain extent due to insufficient combustion of large blocks of coal during combustion, and provides a PLC-based coal crushing and feeding system for a power plant boiler.
In order to achieve the purpose, the invention adopts the following technical scheme:
a PLC-based coal-fired grinding and feeding system for a power plant boiler comprises a feeding box, wherein a feeding hopper is fixedly connected to the upper end of the feeding box, a group of grinding rollers corresponding to the position of the feeding hopper are arranged above the inside of the feeding box, a separation plate is arranged below the grinding rollers and is fixedly arranged inside the feeding box, a plurality of uniformly distributed separation holes are formed in the upper end of the separation plate, a material pushing plate is arranged between the separation plate and the group of grinding rollers and is arranged inside the feeding box in a sliding manner, a reciprocating screw rod corresponding to the position of the material pushing plate is rotatably connected to the inner side wall of the feeding box through a first rolling bearing, the upper end of the side wall of the material pushing plate is movably connected with the rod wall of the reciprocating screw rod, a first motor is fixedly connected to the upper end of the right outer side wall of the feeding box, and the output end of the first motor is rotatably connected with the right end of the, the inside below of pay-off case is equipped with out the hopper, and goes out the below of hopper and be equipped with and push away the feed cylinder, the inside that pushes away the feed cylinder is equipped with pushing equipment, the right-hand member that pushes away the feed cylinder runs through the right side wall of pay-off case and extends to the outside, and pushes away the one end fixedly connected with discharging pipe that the feed cylinder is located the outside, the left lateral wall lower extreme fixedly connected with PLC control box of pay-off case.
Preferably, the upper end left side fixedly connected with backup pad of delivery box, and the lateral wall upper end fixedly connected with L shape conveying pipeline of backup pad, the horizontal part right-hand member fixedly connected with dust absorption hopper of L shape conveying pipeline, and the fixed dust absorption fan that is equipped with in inside of dust absorption hopper, the left side wall upper end fixedly connected with storage box of delivery box, and the upper end of storage box and the vertical portion lower extreme fixed connection of L shape conveying pipeline, the lower extreme fixedly connected with return flow hopper of storage box, and the one end that the storage box was kept away from to the return flow hopper runs through the left side wall of delivery box and extends to inside, the ventilation hole has been seted up to the left side wall of storage box, and the fixed dust screen that is equipped with in inside in.
Preferably, pushing equipment includes that second motor and spiral push away the material leaf, the left inside wall that pushes away the feed cylinder rotates through second antifriction bearing and is connected with the bull stick, and the pole wall and the spiral of bull stick push away the material leaf and fixedly cup joint, the left side lateral wall that pushes away the feed cylinder and the right-hand member fixed connection of second motor, and the output of second motor passes through the second shaft coupling and is connected with the pole wall left end rotation of bull stick.
Preferably, the lower end of the backflow hopper is obliquely arranged, and the penetrating position of the lower end of the backflow hopper and the feeding box is arranged between the discharge hopper and the separating plate.
Preferably, a control valve is fixedly arranged inside the backflow bucket.
Preferably, the dust suction hopper is arranged on the left side above the feed hopper.
Compared with the prior art, the invention provides a PLC-based coal-fired pulverizing and feeding system for a power plant boiler, which has the following beneficial effects:
1. this feeding system is smashed with fire coal to power boiler based on PLC, through the feeder hopper that is equipped with, can be to the inside raw materials that adds of pay-off case, through a set of crushing roller that is equipped with, under the effect of external drive, can smash the coal charge, through the separator plate that is equipped with, can separate the coal charge after smashing, the coal charge that makes the size accord with falls down, guarantee to get into the inside raw materials of boiler and all accord with in the particle diameter range that can fully burn, through the play hopper that is equipped with, push away the feed cylinder, mutually support of pushing equipment and discharging pipe, can shift into boiler inside smashing qualified coal charge, through the PLC control box that is equipped with, can timing control pushing equipment, a set of crushing roller and first motor work according to established procedure, improve material feeding unit's automation, reduce labour's demand.
2. This feeding system is smashed with fire coal to power boiler based on PLC, through the scraping wings that is equipped with, mutually supporting of first motor and reciprocal lead screw, the scraping wings can prevent that the coal charge from blockking up the separation hole, and can not be conform to the size the coal charge and the lateral wall of pay-off case extrude breakage with the size, improve crushing effect, the coal charge of guaranteeing to send into boiler burning all can burn fully, effectively reduce the waste of coal charge resource, through the backup pad that is equipped with, L shape conveying pipeline, the dust absorption fill, the dust absorption fan, the storage box, mutually supporting in backward flow fill and ventilation hole, can absorb the buggy that produces when smashing the coal cinder, avoid the buggy to fly upward everywhere, influence the surrounding environment, cause the clearance inconvenient, and can retrieve the buggy, further reduce the waste of coal charge.
The device has the advantages that the part which is not involved in the device is the same as the prior art or can be realized by the prior art, the crushing effect on the coal material is effectively improved, the coal material fed into a boiler for combustion can be fully combusted, the waste of the coal material resource is reduced, meanwhile, the phenomenon that pulverized coal generated by crushing flies everywhere to influence the surrounding environment and cause inconvenient cleaning can be avoided, and the waste of the coal material can be further reduced.
Drawings
FIG. 1 is a schematic structural diagram of a PLC-based coal pulverizing and feeding system for a power plant boiler provided by the invention;
fig. 2 is a schematic side view of the dust hopper of fig. 1.
In the figure: the device comprises a feeding box 1, a feeding hopper 2, a crushing roller 3, a separating plate 4, a material pushing plate 5, a reciprocating screw rod 6, a first motor 7, a material discharging hopper 8, a material pushing barrel 9, a material discharging pipe 10, a PLC (programmable logic controller) control box 11, a supporting plate 12, an L-shaped material conveying pipe 13, a dust suction hopper 14, a dust suction fan 15, a material storage box 16, a backflow hopper 17, a dust screen 18, a second motor 19 and a spiral material pushing blade 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1, as shown in fig. 1-2, the fire coal pulverizing and feeding system for a power plant boiler based on PLC comprises a feeding box 1, a feeding hopper 2 is fixedly connected to the upper end of the feeding box 1, a set of pulverizing rollers 3 corresponding to the position of the feeding hopper 2 is arranged above the inside of the feeding box 1, a separating plate 4 is arranged below the pulverizing rollers 3, the separating plate 4 is fixedly arranged inside the feeding box 1, a plurality of uniformly distributed separating holes are formed in the upper end of the separating plate 4, a material pushing plate 5 is arranged between the separating plate 4 and the set of pulverizing rollers 3, the material pushing plate 5 is arranged in the feeding box 1 in a sliding manner, a reciprocating screw rod 6 corresponding to the position of the material pushing plate 5 is rotatably connected to the inner side wall of the feeding box 1 through a first rolling bearing, the upper end of the side wall of the material pushing plate 5 is movably connected to the rod wall of the reciprocating screw rod 6, a first motor 7 is fixedly, the output end of the first motor 7 is rotatably connected with the right end of the rod wall of the reciprocating screw rod 6 through a first coupler, a discharge hopper 8 is arranged below the feeding box 1, a material pushing cylinder 9 is arranged below the discharge hopper 8, a material pushing mechanism is arranged inside the material pushing cylinder 9, the right end of the material pushing cylinder 9 penetrates through the right side wall of the feeding box 1 and extends to the outside, the material pushing cylinder 9 is located at the outside, a discharge pipe 10 is fixedly connected to one end of the discharge pipe, the lower end of the left outer side wall of the feeding box 1 is fixedly connected with a PLC control box 11, the rear side of the feeding box 1 is connected with a driving mechanism (not shown in the figure), and the driving mechanism can control a set of two crushing rollers 3 to rotate oppositely so as to crush coal materials.
As shown in fig. 1-2, in example 2, based on example 1, a supporting plate 12 is fixedly connected to the left side of the upper end of a feeding box 1, an L-shaped conveying pipe 13 is fixedly connected to the upper end of the side wall of the supporting plate 12, a dust suction hopper 14 is fixedly connected to the right end of the horizontal portion of the L-shaped conveying pipe 13, a dust suction fan 15 is fixedly disposed inside the dust suction hopper 14, a storage box 16 is fixedly connected to the upper end of the left outer side wall of the feeding box 1, the upper end of the storage box 16 is fixedly connected to the lower end of the vertical portion of the L-shaped conveying pipe 13, a return hopper 17 is fixedly connected to the lower end of the storage box 16, one end of the return hopper 17, which is far away from the storage box 16, penetrates through the left side wall of the feeding box 1 and extends to the inside, a vent hole is formed in the left side wall of the storage box 16, a dust screen 18 is fixedly disposed inside the, the coal dust collecting device enters the storage box 16 through the dust collecting hopper 14 and the L-shaped conveying pipe 13, coal dust can flow back into the feeding box 1 through the backflow hopper 17, so that the coal dust is prevented from flying everywhere to affect the surrounding environment, inconvenience in cleaning is caused, the coal dust can be recovered, and the waste of coal materials is further reduced.
As shown in fig. 1, in embodiment 3, based on embodiment 1, the pushing mechanism includes a second motor 19 and a spiral pushing blade 20, a rotating rod is rotatably connected to a left inner side wall of the pushing cylinder 9 through a second rolling bearing, a rod wall of the rotating rod is fixedly sleeved with the spiral pushing blade 20, a left outer side wall of the pushing cylinder 9 is fixedly connected to a right end of the second motor 19, an output end of the second motor 19 is rotatably connected to a left end of the rod wall of the rotating rod through a second coupling, the second motor 19 operates to rotate the rotating rod, so that the spiral pushing blade 20 can rotate, and the coal falling from the discharging hopper 8 can be pushed at a constant speed to enter the boiler through the discharging pipe 10.
As shown in fig. 1, in embodiment 4, based on embodiment 2, the lower end of the backflow hopper 17 is obliquely arranged, and the penetrating part between the lower end of the backflow hopper 17 and the feeding box 1 is arranged between the discharge hopper 8 and the separation plate 4, so that the backflow pulverized coal can enter the discharge hopper 8.
As shown in fig. 1, in embodiment 5, on the basis of embodiment 2, a control valve is fixedly arranged inside the return hopper 17, and the return hopper 17 can be sealed by the control valve, so that the situation that the pulverized coal in the feeding box 1 flies out due to blowing of air generated by the dust collection fan 15 into the feeding box 1 is avoided, and when a certain amount of pulverized coal is stored, the control valve is opened, so that the pulverized coal can be transferred into the feeding box 1.
As shown in figure 1, in the embodiment 6, on the basis of the embodiment 2, the dust suction hopper 14 is arranged at the upper left side of the feed hopper 2, so that the dust suction effect can be ensured.
Embodiment 7 as shown in fig. 1-2, the fire coal pulverizing and feeding system for a power plant boiler based on PLC comprises a feeding box 1, a feeding hopper 2 is fixedly connected to the upper end of the feeding box 1, a set of pulverizing rollers 3 corresponding to the position of the feeding hopper 2 is arranged above the inside of the feeding box 1, a separating plate 4 is arranged below the pulverizing rollers 3, the separating plate 4 is fixedly arranged inside the feeding box 1, a plurality of uniformly distributed separating holes are formed in the upper end of the separating plate 4, a material pushing plate 5 is arranged between the separating plate 4 and the set of pulverizing rollers 3, the material pushing plate 5 is slidably arranged inside the feeding box 1, a reciprocating screw rod 6 corresponding to the position of the material pushing plate 5 is rotatably connected to the inner side wall of the feeding box 1 through a first rolling bearing, the upper end of the side wall of the material pushing plate 5 is movably connected to the rod wall of the reciprocating screw rod 6, a first motor 7 is fixedly connected to the, the output end of a first motor 7 is rotatably connected with the right end of the rod wall of a reciprocating screw rod 6 through a first coupler, a discharge hopper 8 is arranged below the interior of a feeding box 1, a material pushing cylinder 9 is arranged below the discharge hopper 8, a material pushing mechanism is arranged inside the material pushing cylinder 9, the right end of the material pushing cylinder 9 penetrates through the right side wall of the feeding box 1 and extends to the exterior, a discharge pipe 10 is fixedly connected to one end, located at the exterior, of the material pushing cylinder 9, a PLC control box 11 is fixedly connected to the lower end of the left outer side wall of the feeding box 1, and a driving mechanism (not shown in the figure) is connected to the rear side of the feeding box 1 and can control a group of two crushing rollers 3 to rotate oppositely so as to crush coal materials;
a supporting plate 12 is fixedly connected to the left side of the upper end of the feeding box 1, an L-shaped conveying pipe 13 is fixedly connected to the upper end of the side wall of the supporting plate 12, a dust suction hopper 14 is fixedly connected to the right end of the horizontal portion of the L-shaped conveying pipe 13, a dust suction fan 15 is fixedly arranged inside the dust suction hopper 14, a storage box 16 is fixedly connected to the upper end of the left outer side wall of the feeding box 1, the upper end of the storage box 16 is fixedly connected with the lower end of the vertical portion of the L-shaped conveying pipe 13, a backflow hopper 17 is fixedly connected to the lower end of the storage box 16, one end, far away from the storage box 16, of the backflow hopper 17 penetrates through the left side wall of the feeding box 1 and extends to the inside, a ventilation hole is formed; the pushing mechanism comprises a second motor 19 and a spiral pushing blade 20, the left inner side wall of the pushing cylinder 9 is rotatably connected with a rotating rod through a second rolling bearing, the rod wall of the rotating rod is fixedly sleeved with the spiral pushing blade 20, the left outer side wall of the pushing cylinder 9 is fixedly connected with the right end of the second motor 19, and the output end of the second motor 19 is rotatably connected with the left end of the rod wall of the rotating rod through a second coupler; the lower end of the backflow hopper 17 is obliquely arranged, and the penetrating part of the lower end of the backflow hopper 17 and the feeding box 1 is arranged between the discharge hopper 8 and the separation plate 4; a control valve is fixedly arranged inside the backflow hopper 17, and the backflow hopper 17 can be sealed through the control valve; the dust hopper 14 is arranged at the upper left side of the feed hopper 2. When the coal-fired crushing and feeding system of the power plant boiler is used, raw materials are added into the feeding box 1 through the feeding hopper 2, the coal can be crushed through the crushing rollers 3, the reciprocating screw rod 6 can be rotated by the first motor 7, so that the pushing plate 5 can reciprocate left and right in the feeding box 1, the crushed coal can be separated, the size of the crushed coal is consistent with that of the coal, the pushing plate 5 can prevent the coal from blocking a separation hole and can extrude and crush the coal which is not consistent with the size, the crushing effect is improved, the coal which is fed into the boiler for combustion can be fully combusted, the waste of coal resources is effectively reduced, the qualified crushed coal can be transferred into the boiler through the matching of the discharging hopper 8, the pushing cylinder 9, the pushing mechanism and the discharging pipe 10, and the PLC control box 11 can control the pushing mechanism in a timing mode, The group of crushing rollers 3 and the first motor 7 work according to a set program, so that the automation of the feeding device is improved, the requirement of labor force is reduced, and the PLC control cabinet 11 can control the pushing mechanism, the group of crushing rollers 3 and the first motor 7 to work according to the set program at regular time through a preset program, which is the prior art and is not described in detail.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A power boiler coal-fired smashing and feeding system based on a PLC (programmable logic controller) comprises a feeding box (1) and is characterized in that a feeding hopper (2) is fixedly connected to the upper end of the feeding box (1), a group of smashing rollers (3) corresponding to the feeding hopper (2) in position are arranged above the inner portion of the feeding box (1), a separating plate (4) is arranged below each smashing roller (3), the separating plate (4) is fixedly arranged inside the feeding box (1), a plurality of uniformly distributed separating holes are formed in the upper end of the separating plate (4), a material pushing plate (5) is arranged between the separating plate (4) and the group of smashing rollers (3), the material pushing plate (5) is arranged inside the feeding box (1) in a sliding mode, a reciprocating screw rod (6) corresponding to the material pushing plate (5) in position is rotatably connected to the inner side wall of the feeding box (1) through a first rolling bearing, and the lateral wall upper end of scraping wings (5) and the pole wall swing joint of reciprocal lead screw (6), the first motor (7) of right side lateral wall upper end fixedly connected with of pay-off case (1), the output of first motor (7) is connected through the pole wall right-hand member rotation of first shaft coupling and reciprocal lead screw (6), the inside below of pay-off case (1) is equipped with out hopper (8), and the below that goes out hopper (8) is equipped with and pushes away feed cylinder (9), the inside that pushes away feed cylinder (9) is equipped with pushing equipment, the right-hand member that pushes away feed cylinder (9) runs through the right side wall of pay-off case (1) and extends to the outside, and pushes away feed cylinder (9) and is located outside one end fixedly connected with discharging pipe (10), the left side lateral wall lower extreme fixedly connected with PLC control box (11) of pay-off case (.
2. The PLC-based coal pulverizing and feeding system for the power plant boiler is characterized in that a supporting plate (12) is fixedly connected to the left side of the upper end of the feeding box (1), an L-shaped conveying pipe (13) is fixedly connected to the upper end of the side wall of the supporting plate (12), a dust suction hopper (14) is fixedly connected to the right end of the horizontal part of the L-shaped conveying pipe (13), a dust suction fan (15) is fixedly arranged inside the dust suction hopper (14), a storage box (16) is fixedly connected to the upper end of the left outer side wall of the feeding box (1), the upper end of the storage box (16) is fixedly connected to the lower end of the vertical part of the L-shaped conveying pipe (13), a return hopper (17) is fixedly connected to the lower end of the storage box (16), one end, far away from the storage box (16), of the return hopper (17) penetrates through the left side wall of the feeding box (1) and extends to the inside, a vent hole is formed in the left, and a dust screen (18) is fixedly arranged inside the vent hole.
3. The PLC-based coal-fired pulverizing and feeding system for the power plant boiler is characterized in that the material pushing mechanism comprises a second motor (19) and a spiral pushing blade (20), the left inner side wall of the pushing cylinder (9) is rotatably connected with a rotating rod through a second rolling bearing, the rod wall of the rotating rod is fixedly sleeved with the spiral pushing blade (20), the left outer side wall of the pushing cylinder (9) is fixedly connected with the right end of the second motor (19), and the output end of the second motor (19) is rotatably connected with the left end of the rod wall of the rotating rod through a second coupler.
4. The PLC-based pulverized coal feeding system for the power plant boiler, as recited in claim 2, wherein the lower end of the return hopper (17) is arranged obliquely, and the penetration part of the lower end of the return hopper (17) and the feeding box (1) is arranged between the discharge hopper (8) and the separation plate (4).
5. The PLC-based coal pulverizing and feeding system for the power plant boiler is characterized in that a control valve is fixedly arranged inside the return hopper (17).
6. The PLC-based coal fired mill feeding system for the power plant boiler of claim 2, characterized in that the dust hopper (14) is arranged at the upper left side of the feed hopper (2).
7. The PLC-based coal-fired pulverizing and feeding system for the power plant boiler is characterized in that a feed hopper (2) is fixedly connected to the upper end of the feed box (1), a group of pulverizing rollers (3) corresponding to the feed hopper (2) is arranged above the inside of the feed box (1), a separating plate (4) is arranged below the pulverizing rollers (3), the separating plate (4) is fixedly arranged inside the feed box (1), a plurality of uniformly distributed separating holes are formed in the upper end of the separating plate (4), a material pushing plate (5) is arranged between the separating plate (4) and the group of pulverizing rollers (3), the material pushing plate (5) is arranged inside the feed box (1) in a sliding manner, a reciprocating screw rod (6) corresponding to the material pushing plate (5) is rotatably connected to the inner side wall of the feed box (1) through a first rolling bearing, the upper end of the side wall of the material pushing plate (5) is movably connected with the rod wall of the reciprocating screw rod (6), the upper end of the right outer side wall of the feeding box (1) is fixedly connected with a first motor (7), the output end of the first motor (7) is rotatably connected with the right end of the rod wall of the reciprocating screw rod (6) through a first coupler, a discharging hopper (8) is arranged below the feeding box (1), a material pushing barrel (9) is arranged below the discharging hopper (8), a material pushing mechanism is arranged inside the material pushing barrel (9), the right end of the material pushing barrel (9) penetrates through the right side wall of the feeding box (1) and extends to the outside, a discharging pipe (10) is fixedly connected to one end, located at the outside, of the material pushing barrel (9), and a PLC control box (11) is fixedly connected to the lower end of the left outer side wall;
the dust collection and recycling device comprises a feeding box (1), a supporting plate (12) is fixedly connected to the left side of the upper end of the feeding box (1), an L-shaped conveying pipe (13) is fixedly connected to the upper end of the side wall of the supporting plate (12), a dust collection hopper (14) is fixedly connected to the right end of the horizontal portion of the L-shaped conveying pipe (13), a dust collection fan (15) is fixedly arranged inside the dust collection hopper (14), a storage box (16) is fixedly connected to the upper end of the left outer side wall of the feeding box (1), the upper end of the storage box (16) is fixedly connected with the lower end of the vertical portion of the L-shaped conveying pipe (13), a backflow hopper (17) is fixedly connected to the lower end of the storage box (16), one end, far away from the storage box (16), of the backflow hopper (17) penetrates through the left side wall of the feeding box (1) and extends to the inside, a;
pushing equipment includes that second motor (19) and spiral push away material leaf (20), the left inside wall that pushes away feed cylinder (9) rotates through second antifriction bearing and is connected with the bull stick, and the pole wall and the spiral of bull stick push away material leaf (20) fixed cup joint, the left side lateral wall of pushing away feed cylinder (9) and the right-hand member fixed connection of second motor (19), and the output of second motor (19) passes through the second shaft coupling and is connected with the pole wall left end rotation of bull stick, the lower extreme of backward flow fill (17) sets up for the slope, and the lower extreme of backward flow fill (17) and the department of running through of pay-off box (1) are located to set up between hopper (8) and separation plate (4), the fixed control valve that is equipped with in inside of backward flow fill (17), it sets up to inhale the top left side that dust fill (14) are located feeder hopper (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011071660.0A CN112337546A (en) | 2020-10-09 | 2020-10-09 | Feeding system is smashed with fire coal to power boiler based on PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011071660.0A CN112337546A (en) | 2020-10-09 | 2020-10-09 | Feeding system is smashed with fire coal to power boiler based on PLC |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113509807A (en) * | 2021-06-22 | 2021-10-19 | 乌拉特中旗浩通清洁能源有限公司 | Dust pelletizing system is used in coal washing processing |
| CN113713956A (en) * | 2021-11-01 | 2021-11-30 | 江苏羽特饲料有限公司 | Straw material crushing device |
| CN114046497A (en) * | 2021-11-17 | 2022-02-15 | 广东绿壳新能源有限公司 | Circulating fluidized bed boiler capable of reducing NOX discharge amount |
| CN114160253A (en) * | 2021-12-20 | 2022-03-11 | 瑞彩科技股份有限公司 | Two-roller mica crushing device with noise reduction structure |
-
2020
- 2020-10-09 CN CN202011071660.0A patent/CN112337546A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113509807A (en) * | 2021-06-22 | 2021-10-19 | 乌拉特中旗浩通清洁能源有限公司 | Dust pelletizing system is used in coal washing processing |
| CN113713956A (en) * | 2021-11-01 | 2021-11-30 | 江苏羽特饲料有限公司 | Straw material crushing device |
| CN113713956B (en) * | 2021-11-01 | 2022-02-08 | 江苏羽特饲料有限公司 | Straw material crushing device |
| CN114046497A (en) * | 2021-11-17 | 2022-02-15 | 广东绿壳新能源有限公司 | Circulating fluidized bed boiler capable of reducing NOX discharge amount |
| CN114160253A (en) * | 2021-12-20 | 2022-03-11 | 瑞彩科技股份有限公司 | Two-roller mica crushing device with noise reduction structure |
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Application publication date: 20210209 |