CN117184672A - Anti-blocking method for lower coal bucket of boiler coal mill - Google Patents
Anti-blocking method for lower coal bucket of boiler coal mill Download PDFInfo
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- CN117184672A CN117184672A CN202311321293.9A CN202311321293A CN117184672A CN 117184672 A CN117184672 A CN 117184672A CN 202311321293 A CN202311321293 A CN 202311321293A CN 117184672 A CN117184672 A CN 117184672A
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- 239000003245 coal Substances 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 4
- 238000010009 beating Methods 0.000 claims 1
- 238000003756 stirring Methods 0.000 abstract description 11
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000002817 coal dust Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Crushing And Grinding (AREA)
Abstract
According to the anti-blocking method for the coal hopper of the boiler coal mill, raw coal is poured into a hopper body, a first motor is started to drive a feeding box to move towards the bottom of the hopper body through a threaded rod, a stop plate is driven to move away when the feeding box moves, the raw coal in the hopper body can fall into the feeding box, the first motor is rotated reversely to drive the feeding box to move above a drain hole, then an electromagnet on one side of a baffle is powered off, the baffle is opened, the raw coal falls into the boiler from the drain hole, when the hopper body is blocked, a second motor can be started to drive a main bevel gear and a secondary bevel gear through a first rotating shaft, the second rotating shaft drives a stirring rod to stir the raw coal in the hopper body, raw coal blocking is avoided, the first rotating shaft also synchronously drives a second connecting rod to rotate, and the second connecting rod drives a ball to strike the hopper body through a spring, so that the hopper body blanking is smoother. The invention is used as an anti-blocking method for a coal bucket in a power plant.
Description
Technical Field
The invention relates to the technical field of boiler coal mills, in particular to an anti-blocking method of a coal hopper of a boiler coal mill.
Background
The coal mill is an important auxiliary device for crushing and grinding coal powder, and comprises a vertical mill, a high-pressure suspension roller mill, a medium-speed micronizing mill, an overpressure trapezoid mill, a Raymond mill and the like, wherein the coal grinding process is a process that coal is crushed and the surface area of the coal is continuously increased, the new surface area is increased, the binding force among solid molecules must be overcome, so that energy is consumed, the coal is ground into coal powder in the coal mill, the coal is mainly crushed, smashed and ground, the coal mill is provided with a coal hopper, the existing coal hopper is of an integral structure and only takes charge of blanking, and the function is single, so that the coal hopper anti-blocking method of the coal hopper of the coal mill of a boiler is provided.
The prior patent (publication number: CN 214320468U) discloses an anti-blocking mechanism of a coal hopper under a wear-resistant chain boiler coal mill, and the product comprises the following components: the coal pulverizer comprises a bottom cylinder, wherein a round table-shaped coal bucket is arranged at the top of the bottom cylinder, a top circular ring is arranged at the top of the round table-shaped coal bucket, an inverted round table-shaped shrinkage ring is arranged at the top of the top circular ring, a round table-shaped pocket ring is arranged at the top of the inverted round table-shaped shrinkage ring, the area of a top opening of the round table-shaped pocket ring is larger than that of a bottom opening, the inverted round table-shaped shrinkage ring is matched with a lower hopper of a boiler coal pulverizer, the lower hopper of the boiler coal pulverizer is positioned in the inverted round table-shaped shrinkage ring to discharge coal dust, and the round table-shaped pocket ring is used for holding scattered coal dust. The inventors found that the following problems exist in the prior art in the process of implementing the present invention: 1. when the existing coal bucket burns, quantitative coal feeding is inconvenient, so that the combustion efficiency of the boiler cannot be ensured, waste is caused if the amount of the coal bucket is too large, and ideal combustion efficiency cannot be achieved if the amount of the coal bucket is too small; 2. the existing coal bucket is large in upper opening and small in lower opening, raw coal particles flow by self weight, and when raw coal is wet or mixed with coal slime, blockage is easy to occur, so that the stable operation of a boiler is influenced.
Disclosure of Invention
The invention aims to provide an anti-blocking method for a lower coal bucket of a coal mill of a boiler, which aims to solve the problems that in the prior art, the existing coal bucket is inconvenient to quantitatively feed coal when the boiler burns, so that the combustion efficiency of the boiler cannot be ensured, waste is caused if the combustion efficiency is too high, and ideal combustion efficiency cannot be achieved if the combustion efficiency is too low; and the existing coal bucket is large in upper opening and small in lower opening, raw coal particles flow by self weight, and when raw coal is moist or is doped with coal slime, blockage is easy to occur, so that the stable operation of the boiler is influenced.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a method for preventing coal hopper from being blocked in a coal mill of a boiler comprises the steps of firstly pouring raw coal into a hopper body 1, then starting a first motor 401 to drive a threaded rod 402 to rotate, driving a feed box 403 to move towards the bottom of the hopper body 1 when the threaded rod 402 rotates, driving a stop plate 405 to move away from the lower portion of the hopper body 1 when the feed box 403 moves, enabling the raw coal in the hopper body 1 to fall into the feed box 403, enabling the first motor 401 to reversely rotate, driving the feed box 403 to move to the position above a drain hole 5, then enabling an electromagnet on one side of a baffle 404 to be powered off, enabling the baffle 404 to be opened, enabling the raw coal to fall into the boiler from the drain hole 5, and ensuring that the amount of each time of blanking is the same because of fixed capacity of the feed box 403, so as to ensure the combustion efficiency of the boiler, and enabling a second motor 202 to drive a first rotating shaft 203 to rotate when the hopper body 1 is blocked, enabling a main bevel gear 204 to rotate, enabling a second rotating shaft 206 to rotate, enabling a bevel gear 209 to be driven by the second rotating shaft 206 to fall into the hopper body 1, enabling a stirring rod 209 to be driven by the second rotating bevel gear to be driven by the second rotating shaft 2010, and enabling a connecting rod 2010 to be prevented from being blocked by the coal to be driven by the connecting rod 2010 to be driven to be more smoothly and enabling the coal to be blown down by the connecting rod to be in a synchronous mode when the first shaft 2010.
The anti-blocking method of the lower coal bucket of the boiler coal mill comprises a bucket body, wherein an anti-blocking assembly is arranged in the middle of the bucket body, a coal conveying channel is fixedly connected to the bottom of the bucket body, a quantitative feeding assembly is arranged in the coal conveying channel, and a leak hole is formed in one side of the bottom of the coal conveying channel;
the quantitative feeding assembly comprises a first motor fixedly connected to one side of a coal conveying channel, a threaded rod is fixedly connected to the output end of the first motor, the threaded rod penetrates through the middle of a feeding box, a baffle is rotatably connected to the bottom of the feeding box, a stop plate is fixedly connected to one side of the feeding box, and the stop plate is movably connected to the middle of a limiting groove.
Further preferably, the anti-blocking assembly comprises a first connecting rod fixedly connected to one side of the bucket body, a second motor is fixedly connected to the bottom end of the first connecting rod, a first rotating shaft is fixedly connected to the output end of the second motor, a main bevel gear is fixedly connected to the middle of the first rotating shaft, a secondary bevel gear is meshed to one side of the main bevel gear, a second rotating shaft is fixedly connected to the bottom of the secondary bevel gear, the second rotating shaft penetrates through the middle of the bearing sleeve, two cross rods are fixedly connected to the outer side of the bearing sleeve, a plurality of stirring rods are fixedly connected to the outer side of the second rotating shaft, four second connecting rods are fixedly connected to the outer side of the first rotating shaft, springs are fixedly connected to the tail ends of the second connecting rods, and one end of each spring is fixedly connected with a hitting ball.
Further preferably, an elastic structure is formed between the second connecting rod and the striking ball through a spring.
Further preferably, the four second connecting rods are divided into two groups, and the two groups of second connecting rods are perpendicular to each other.
Further preferably, the internal dimension of the limit groove is consistent with the external dimension of the stop plate.
Further preferably, electromagnets are arranged on one side of the baffle plate and one side of the feeding box.
Further preferably, the opening of the feeding box is slightly larger than the discharge hole at the bottom of the bucket body.
Advantageous effects
According to the invention, the first motor is started to drive the threaded rod to rotate, the threaded rod drives the feeding box to move towards the bottom of the bucket body when being rotated, and the stop plate is driven to move away from the lower part of the bucket body when the feeding box moves, raw coal in the bucket body can fall into the feeding box at the moment, the first motor is then reversely rotated, the feeding box can be driven to move to above the leak hole, then the electromagnet on one side of the baffle plate is powered off, at the moment, the baffle plate is opened, and raw coal falls into the boiler from the leak hole, and the same discharging quantity at each time can be ensured because the feeding box is fixed in capacity, so that the combustion efficiency of the boiler is ensured.
According to the invention, the first rotating shaft is driven to rotate by the second motor, the first rotating shaft can drive the main bevel gear to rotate, the main bevel gear can drive the second rotating shaft to rotate by the auxiliary bevel gear, the stirring rod is driven to stir raw coal in the bucket body when the second rotating shaft rotates, raw coal blockage is avoided, the second connecting rod is synchronously driven to rotate when the first rotating shaft rotates, and the second connecting rod can drive the hitting ball to hit the bucket body through the spring, so that the bucket body blanking is smoother.
Drawings
FIG. 1 is a schematic elevational view of the present invention;
FIG. 2 is a schematic diagram of a front cross-sectional structure of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2 according to the present invention;
fig. 4 is a schematic top view of a first shaft of the present invention.
In the figure: 1. a bucket body; 2. an anti-blocking assembly; 201. a first connecting rod; 202. a second motor; 203. a first rotating shaft; 204. a main bevel gear; 205. a secondary bevel gear; 206. a second rotating shaft; 207. a bearing sleeve; 208. a cross bar; 209. a stirring rod; 2010. a second connecting rod; 2011. a spring; 2012. hitting a ball; 3. a coal conveying channel; 4. a feeding assembly; 401. a first motor; 402. a threaded rod; 403. a feeding box; 404. a baffle; 405. a stop plate; 406. a limit groove; 5. and (5) a leak hole.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are obtained by a worker of ordinary skill in the art without creative efforts, are within the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1 to 4, the present invention provides a technical solution:
a method for preventing coal hopper from being blocked in a coal mill of a boiler comprises the steps of firstly pouring raw coal into a hopper body 1, then starting a first motor 401 to drive a threaded rod 402 to rotate, driving a feed box 403 to move towards the bottom of the hopper body 1 when the threaded rod 402 rotates, driving a stop plate 405 to move away from the lower portion of the hopper body 1 when the feed box 403 moves, enabling the raw coal in the hopper body 1 to fall into the feed box 403, enabling the first motor 401 to reversely rotate, driving the feed box 403 to move to the position above a drain hole 5, then enabling an electromagnet on one side of a baffle 404 to be powered off, enabling the baffle 404 to be opened, enabling the raw coal to fall into the boiler from the drain hole 5, and ensuring that the amount of each time of blanking is the same because of fixed capacity of the feed box 403, so as to ensure the combustion efficiency of the boiler, and enabling a second motor 202 to drive a first rotating shaft 203 to rotate when the hopper body 1 is blocked, enabling a main bevel gear 204 to rotate, enabling a second rotating shaft 206 to rotate, enabling a bevel gear 209 to be driven by the second rotating shaft 206 to fall into the hopper body 1, enabling a stirring rod 209 to be driven by the second rotating bevel gear to be driven by the second rotating shaft 2010, and enabling a connecting rod 2010 to be prevented from being blocked by the coal to be driven by the connecting rod 2010 to be driven to be more smoothly and enabling the coal to be blown down by the connecting rod to be in a synchronous mode when the first shaft 2010.
The anti-blocking method of a coal hopper under a boiler coal mill comprises a hopper body 1, wherein an anti-blocking assembly 2 is arranged in the middle of the hopper body 1, a coal conveying channel 3 is fixedly connected to the bottom of the hopper body 1, a quantitative feeding assembly 4 is arranged in the coal conveying channel 3, and a leak hole 5 is formed in one side of the bottom of the coal conveying channel 3;
the quantitative feeding assembly 4 comprises a first motor 401 fixedly connected to one side of the coal conveying channel 3, the output end of the first motor 401 is fixedly connected with a threaded rod 402, the threaded rod 402 penetrates through the middle of a feeding box 403, the bottom of the feeding box 403 is rotationally connected with a baffle 404, one side of the feeding box 403 is fixedly connected with a material stopping plate 405, and the material stopping plate 405 is movably connected to the middle of a limiting groove 406.
In this embodiment, as shown in fig. 1, fig. 2 and fig. 4, the anti-blocking assembly 2 includes a first connecting rod 201 fixedly connected to one side of the bucket body 1, a second motor 202 is fixedly connected to the bottom end of the first connecting rod 201, a first rotating shaft 203 is fixedly connected to the output end of the second motor 202, a main bevel gear 204 is fixedly connected to the middle part of the first rotating shaft 203, a secondary bevel gear 205 is meshed to one side of the main bevel gear 204, a second rotating shaft 206 is fixedly connected to the bottom of the secondary bevel gear 205, the second rotating shaft 206 penetrates through the middle part of the bearing sleeve 207, two cross rods 208 are fixedly connected to the outer side of the bearing sleeve 207, a plurality of stirring rods 209 are fixedly connected to the outer side of the second rotating shaft 206, four second connecting rods 2010 are fixedly connected to the outer side of the first rotating shaft 203, springs 2011 are fixedly connected to the tail ends of the four second connecting rods 2010, and one end of the springs 2011 is fixedly connected with a striking ball 2012.
In this embodiment, as shown in fig. 1 and 4, an elastic structure is formed between the second connecting rod 2010 and the striking ball 2012 by a spring 2011; the impact ball 2012 can have a certain contraction amplitude, so that the impact ball 2012 is prevented from damaging the bucket body 1 when the bucket body 1 is impacted.
In this embodiment, as shown in fig. 1, 2 and 4, four second connecting rods 2010 are divided into two groups, and the two groups of second connecting rods 2010 are perpendicular to each other; the second connecting rod 2010 can be used for driving the hitting ball 2012 to hit the bucket body 1 at a higher frequency, so that raw coal in the bucket body 1 is promoted to be fed more smoothly.
In this embodiment, as shown in fig. 3, the internal size structure of the limiting groove 406 is consistent with the external size structure of the stop plate 405; so that the limiting groove 406 can limit the feeding box 403 through the material stopping plate 405, and prevent the feeding box 403 from rotating along with the threaded rod 402.
In this embodiment, as shown in fig. 2, an electromagnet is disposed on one side of the baffle 404 and one side of the feeding box 403; when the feed box 403 moves above the weep hole 5, the electromagnet is powered off to open the baffle 404, so that raw coal in the feed box 403 is fed into the boiler.
In this embodiment, as shown in fig. 3, the opening of the feeding box 403 is slightly larger than the discharge hole at the bottom of the bucket body 1; so that the charging box 403 can more easily catch the raw coal falling in the bucket body 1.
Firstly, pour raw coal into the bucket body 1, then start first motor 401 and drive threaded rod 402 rotation, can drive when threaded rod 402 rotates and throw the magazine 403 and remove to bucket body 1 bottom, and can drive when throwing the magazine 403 and throw the flitch 405 and remove from bucket body 1 below, raw coal in the bucket body 1 can fall into throw the magazine 403 this moment, make first motor 401 reverse rotation again, can drive throw the magazine 403 and remove to the leak hole 5 top, then the electro-magnet outage of baffle 404 one side, baffle 404 opens this moment, raw coal falls into the boiler from leak hole 5, because throw the magazine 403 capacity fixed, can guarantee that the volume of unloading is the same at every turn, thereby guarantee the combustion efficiency of boiler, when bucket body 1 blocks up, can start second motor 202 and drive first pivot 203 rotation, first pivot 203 can drive main bevel gear 204 rotation, main bevel gear 204 rotation can drive second pivot 206 rotation through vice bevel gear 205, can drive stirring rod 209 and stir raw coal in the bucket body 1 when second pivot 206 rotation, avoid raw coal to block up, and when first pivot 2010 drives second pivot 2010 and drive the connecting rod 2010 and make the connecting rod to hit the ball through the vibration, make the ball 2011 more smooth and easy down.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A method for preventing a coal hopper under a coal mill of a boiler from being blocked is characterized by comprising the following steps: firstly, raw coal is poured into a bucket body (1), then a first motor (401) is started to drive a threaded rod (402) to rotate, the threaded rod (402) can drive a feed box (403) to move towards the bottom of the bucket body (1) when rotating, a stop plate (405) can be driven to move away from the lower part of the bucket body (1) when the feed box (403) moves, at the moment, the raw coal in the bucket body (1) can fall into the feed box (403), then the first motor (401) is reversely rotated, the feed box (403) can be driven to move above a drain hole (5), then an electromagnet on one side of a baffle (404) is powered off, at the moment, the baffle (404) is opened, the raw coal falls into a boiler from the drain hole (5), the capacity of the feed box (403) is fixed, the same in each time, so that the combustion efficiency of the boiler is ensured, when the bucket body (1) is blocked, a second motor (202) can be started to drive a first rotating shaft (203) to rotate, a main bevel gear (204) can be driven to rotate, a second bevel gear (206) can be driven to synchronously rotate, and a connecting rod (2010) can be synchronously rotated when the main bevel gear (206) is driven to rotate, and the second bevel gear (203) is driven to rotate, and the main shaft (2010) can be synchronously rotated to rotate, the second connecting rod (2010) drives the ball striking device (2012) to strike the bucket body (1) through the spring (2011), so that the bucket body (1) is smoothly discharged.
2. The method for preventing blockage of a lower coal hopper of a boiler coal mill according to claim 1, wherein the method comprises the following steps of: the anti-blocking device is characterized in that an anti-blocking component (2) is arranged in the middle of the bucket body (1), a coal conveying channel (3) is fixedly connected to the bottom of the bucket body (1), a quantitative feeding component (4) is arranged in the coal conveying channel (3), and a leak (5) is formed in one side of the bottom of the coal conveying channel (3); the quantitative feeding assembly (4) comprises a first motor (401) fixedly connected to one side of a coal conveying channel (3), the output end of the first motor (401) is fixedly connected with a threaded rod (402), the threaded rod (402) penetrates through the middle of a feeding box (403), a baffle (404) is rotatably connected to the bottom of the feeding box (403), a stop plate (405) is fixedly connected to one side of the feeding box (403), and the stop plate (405) is movably connected to the middle of a limiting groove (406).
3. The method for preventing blockage of a lower coal hopper of a boiler coal mill according to claim 1 or 2, wherein the method comprises the following steps of: anti-blocking assembly (2) is including fixed connection head rod (201) in body of a hopper (1) one side, the bottom fixedly connected with second motor (202) of head rod (201), the output fixedly connected with first pivot (203) of second motor (202), the middle part fixedly connected with main bevel gear (204) of first pivot (203), the meshing of one side of main bevel gear (204) has vice bevel gear (205), the bottom fixedly connected with second pivot (206) of vice bevel gear (205), second pivot (206) run through the middle part in bearing housing (207), the outside fixedly connected with two horizontal poles (208) of bearing housing (207), the outside fixedly connected with puddler (209) of second pivot (206), the outside fixedly connected with four second connecting rods (2010) of first pivot (203), four the end of second connecting rod (2010) is all fixedly connected with spring (2011), the one end fixedly connected with ball (2012) of beating of spring (2011).
4. The method for preventing blockage of a lower coal hopper of a boiler coal mill according to claim 3, wherein the method comprises the following steps of: an elastic structure is formed between the second connecting rod (2010) and the striking ball (2012) through a spring (2011).
5. The method for preventing blockage of a lower coal hopper of a boiler coal mill according to claim 3, wherein the method comprises the following steps of: the four second connecting rods (2010) are divided into two groups, and the two groups of second connecting rods (2010) are perpendicular to each other.
6. The method for preventing blockage of a lower coal hopper of a boiler coal mill according to claim 1 or 2 or 3 or 4 or 5, wherein the method comprises the following steps of: the inner size structure of the limiting groove (406) is consistent with the outer size structure of the material stopping plate (405).
7. The method for preventing blockage of a lower coal bucket of a boiler coal mill according to claim 1 or 2 or 3 or 4 or 5 or 6, wherein the method comprises the following steps of: one side of the baffle (404) and one side of the feeding box (403) are both provided with electromagnets.
8. The method for preventing blockage of a lower coal bucket of a boiler coal mill according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7, wherein the method comprises the following steps of: the opening of the feeding box (403) is slightly larger than the discharge hole at the bottom of the bucket body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311321293.9A CN117184672A (en) | 2023-10-12 | 2023-10-12 | Anti-blocking method for lower coal bucket of boiler coal mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311321293.9A CN117184672A (en) | 2023-10-12 | 2023-10-12 | Anti-blocking method for lower coal bucket of boiler coal mill |
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| CN117184672A true CN117184672A (en) | 2023-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311321293.9A Pending CN117184672A (en) | 2023-10-12 | 2023-10-12 | Anti-blocking method for lower coal bucket of boiler coal mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117446359A (en) * | 2023-12-25 | 2024-01-26 | 广州唯友斯工程机械配件有限公司 | Charging storage device for metallurgical equipment |
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2023
- 2023-10-12 CN CN202311321293.9A patent/CN117184672A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117446359A (en) * | 2023-12-25 | 2024-01-26 | 广州唯友斯工程机械配件有限公司 | Charging storage device for metallurgical equipment |
| CN117446359B (en) * | 2023-12-25 | 2024-03-01 | 广州唯友斯工程机械配件有限公司 | Charging storage device for metallurgical equipment |
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