Boiler pulverized coal input device

Abstract

The invention relates to the technical field of boiler pulverized coal input devices, and provides a boiler pulverized coal input device which comprises a shell, a feeding port is formed in the top of the shell, a conveying device used for conveying pulverized coal is arranged at the bottom of the shell, a material guide plate is fixedly connected to the interior of the shell, and a storage cylinder is fixed to the bottom of the material guide plate. A rolling mechanism is arranged in the storage cylinder, an opening is formed in the bottom of one side of the storage cylinder, a screen is arranged on the side, away from the storage cylinder, in the shell, and a driving mechanism enabling the screen to move in a reciprocating mode is arranged in the shell. According to the technical scheme, the problem that the operation efficiency is affected after damp caked pulverized coal and impurities enter the conveying device is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler pulverized coal input devices, and specifically, to a boiler pulverized coal input device. Background Art

[0002] With the continuous increase in energy demand, coal, as one of the traditional main energy sources, still occupies an important position in many industrial fields, especially in power production. As an important form of coal-fired boiler, a pulverized coal boiler realizes efficient heat energy conversion by injecting pulverized coal into the furnace and mixing it with air for combustion.

[0003] However, due to the hygroscopicity of pulverized coal, during storage and transportation, once the environmental humidity is too high, the pulverized coal is likely to absorb moisture and form lumps. At the same time, the pulverized coal may also be mixed with impurities such as coal gangue particles and debris. After the damp and lumpy pulverized coal and impurities enter the conveying pipeline, they will seriously hinder the conveying of pulverized coal and may even cause pipeline blockage. This not only greatly reduces the efficiency of the conveying device but also leads to unstable coal powder supply to the boiler, thus affecting the normal operation of the boiler, reducing production efficiency, and increasing energy consumption. Summary of the Invention

[0004] The present invention proposes a boiler pulverized coal input device, which solves the problem that the damp and lumpy pulverized coal and impurities affect the operation efficiency after entering the conveying device.

[0005] The technical solution of the present invention is as follows: A boiler pulverized coal input device includes a housing. An inlet is provided at the top of the housing, and a conveying device for conveying pulverized coal is provided at the bottom of the housing. A guiding plate is fixedly connected inside the housing, and a storage cylinder is fixed to the bottom of the guiding plate. A rolling mechanism is provided inside the storage cylinder. An opening is provided at the bottom of one side of the storage cylinder, and a sieve is provided on the side of the housing interior away from the storage cylinder. A driving mechanism for reciprocating the sieve is provided inside the housing.

[0006] Further, the rolling mechanism includes a rotating motor provided at the top of the housing, a rotating shaft fixedly connected to the output end of the rotating motor, a pressing roller provided on one side of the rotating shaft inside the storage cylinder, and a pushing brush. The pressing roller is fixedly connected to the side of the rotating shaft, and one side of the pressing roller abuts against the bottom of the storage cylinder. The pushing brush is provided on the side of the rotating shaft away from the pressing roller and is fixedly connected to the rotating shaft. An annular sliding groove is provided on the side of the storage cylinder, and a slider is slidably connected inside the annular sliding groove. The other side of the pressing roller is fixedly connected to the slider.

[0007] Further, a switching plate is rotatably connected to the opening of the storage cylinder. A rotating mechanism for closing or opening the opening is provided at the bottom of the storage cylinder, and the rotating mechanism can close the opening when the pressing roller passes through the opening and open the opening when the pushing brush passes through.

[0008] Further, the rotating mechanism includes a receiving block fixedly connected to the bottom of the storage cylinder, a first sliding block slidably connected to the inside of the receiving block, a first connecting rod with two ends respectively rotatably connected to the opening and closing plate and the first sliding block, a first elastic member, a towing rope, a winding wheel, a gear, and an arc-shaped rack. A sliding groove is provided inside the receiving block, and the first sliding block is slidably connected to the inner wall of the sliding groove. The first elastic member is arranged between the first sliding block and the side surface of the sliding groove. A support plate is fixedly connected inside the material guiding plate. The gear is rotatably connected to the support plate through a rotating shaft, the winding wheel is fixedly connected to the rotating shaft, the arc-shaped rack is fixedly connected to the rotating shaft, and the arc-shaped rack is arranged above the pushing brush. The arc-shaped rack meshes with the gear. One end of the towing rope is fixedly connected to the first sliding block, and the other end of the towing rope is fixedly connected to the winding wheel through a plurality of pulleys.

[0009] Further, the driving mechanism includes a pushing plate, moving blocks arranged on both sides of the sieve mesh, sliding wheels, and a plurality of second elastic members. One end of the rotating shaft extends to the bottom of the storage cylinder. The pushing plate is fixedly connected to the side of the rotating shaft close to the sieve mesh. The four corners of the pushing plate are all in an arc-shaped structure, and arc-shaped grooves are provided on the four side surfaces of the pushing plate. Each arc-shaped groove is circumferentially arranged with the rotating shaft as the center. One of the moving blocks is fixedly connected with a support frame on the side close to the pushing plate. The sliding wheel is arranged on the support frame and rotatably connected to the support frame, and the sliding wheel is slidably connected with the arc-shaped groove. One end of each of the second elastic members is fixedly connected to the inner wall of the housing, and one end of each of the second elastic members is fixedly connected to the moving block.

[0010] Further, a plurality of fixing rods are fixedly connected inside the housing, and a movable rod is arranged on the side of the fixing rod close to the moving block, and the movable rod is slidably connected to the inside of the fixing rod. Each of the second elastic members is sleeved on the outer surface of the fixing rod.

[0011] Further, the sieve mesh includes a first filter screen and a second filter screen. The first filter screen and the second filter screen are respectively rotatably connected to the corresponding moving blocks. An opening and closing mechanism for rotating the first filter screen and the second filter screen downward is provided inside the housing. The opening and closing mechanism includes a second connecting rod, a third connecting rod, a moving rod, and a power assembly for driving the moving rod to move downward. One end of the second connecting rod is rotatably connected to the first filter screen, one end of the third connecting rod is rotatably connected to the second filter screen, and the other ends of the second connecting rod and the third connecting rod are respectively rotatably connected to both sides of the moving rod.

[0012] Further, the power assembly includes a pushing cylinder, a slide rail, a second slider, and a slide plate. The slide rail is arranged above the moving rod. The second slider is fixedly connected to the top of the moving rod. The second slider is slidably connected to the slide rail. A connecting groove is provided on the side surface of the housing. The slide plate is arranged outside the housing, and the slide rail is fixedly connected to the slide plate through a connecting block. The pushing cylinder is fixed to the side surface of the housing, and the telescopic rod of the pushing cylinder is fixedly connected to the slide plate.

[0013] Further, a support block is fixedly connected inside the housing. A guide rod is fixedly connected to the support block. The slide rail is slidably connected to the guide rod.

[0014] Further, the connecting block is slidably connected to the inner wall of the connecting groove. The length of the slide plate is greater than the length of the connecting groove, and the slide plate is slidably connected to the side surface of the housing.

[0015] The working principle and beneficial effects of the present invention are as follows:

[0016] By setting the rolling mechanism and the driving mechanism, when the pulverized coal enters the interior of the housing through the feed port, the rolling mechanism performs a rolling treatment on the pulverized coal, presses the agglomerated pulverized coal into fine particles, and makes it fall from the opening to the screen, promoting the full combustion of the pulverized coal in the boiler. The driving mechanism makes the screen move reciprocally. The smaller pulverized coal falls through the filter holes to the conveying device, while the impurities and larger particles remain on the surface of the screen, thereby reducing the risk of blockage of the conveying device and solving the problem that the moisture-absorbed and agglomerated pulverized coal and impurities affect the operating efficiency after entering the conveying device. In addition, the reciprocating motion of the driving mechanism can prevent the screen from being blocked and improve the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a schematic partial structural cross-section of the present invention Figure 1 ;

[0020] Figure 3 is Figure 2 an enlarged schematic diagram at A in

[0021] Figure 4 is a schematic structural diagram of the material guiding plate, storage cylinder, and rotating mechanism in this embodiment;

[0022] Figure 5 is Figure 4 an enlarged schematic diagram at B in

[0023] Figure 6 is a cross-sectional view of the present invention;

[0024] Figure 7 Schematic cross - section of the local structure of the present invention Figure 2 ;

[0025] Figure 8 is Figure 7 an enlarged schematic view at position C in

[0026] Figure 9 a schematic view of the screen and the opening - closing mechanism in this embodiment.

[0027] In the figure: 1. Housing; 101. Feed inlet; 102. Conveying device; 103. Guide plate; 104. Storage cylinder; 105. Opening; 106. Screen; 1061. First filter screen; 1062. Second filter screen; 2. Rotating motor; 201. Rotating shaft; 202. Pressing roller; 203. Pushing brush; 204. Annular chute; 205. Slide block; 206. Opening - closing plate; 3. Accommodating block; 301. First sliding block; 302. First connecting rod; 303. First elastic member; 304. Traction rope; 305. Winding wheel; 306. Gear; 307. Arc rack; 3071. Arc plate; 308. Sliding groove; 309. Support plate; 310. Rotating shaft; 311. Pulley; 4. Pushing plate; 401. Moving block; 402. Second elastic member; 403. Arc groove; 404. Support frame; 405. Sliding wheel; 406. Fixed rod; 407. Movable rod; 5. Second connecting rod; 501. Third connecting rod; 502. Moving rod; 503. Pushing cylinder; 504. Slide rail; 505. Second sliding block; 506. Slide plate; 507. Connecting groove; 508. Connecting block; 509. Support block; 510. Guide rod. Detailed implementation manners

[0028] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] Refer to Figures 1-7 , a boiler pulverized coal input device, including a housing 1. A feed inlet 101 is provided at the top of the housing 1, and a conveying device 102 for conveying pulverized coal is provided at the bottom of the housing 1. The conveying device 102 can be a screw conveyor or a blowing method using a blower, and this embodiment does not limit this.

[0031] Inside the housing 1, there is a fixed connection with a material guiding plate 103. The material guiding plate 103 is inclined to guide the pulverized coal to smoothly enter the storage cylinder 104. At the bottom of the material guiding plate 103, there is a fixed storage cylinder 104. Inside the storage cylinder 104, there is a roller pressing mechanism which processes the pulverized coal. At the bottom on one side of the storage cylinder 104, there is an opening 105 through which the pulverized coal can flow above the screen 106. On the side of the housing 1 away from the storage cylinder 104 inside, there is a screen 106 which can effectively screen the pulverized coal. In order to enable the screen 106 to work efficiently, there is also a driving mechanism inside the housing 1 to make the screen 106 reciprocate, thereby improving the screening efficiency.

[0032] The roller pressing mechanism and the driving mechanism are provided so that when the pulverized coal enters the inside of the housing 1 through the feed inlet 101, the roller pressing mechanism performs a roller pressing process on the pulverized coal, presses the agglomerated pulverized coal into fine particles, and makes it fall from the opening 105 to the screen 106, promoting the full combustion of the pulverized coal in the boiler. The driving mechanism makes the screen 106 reciprocate. The smaller pulverized coal falls through the filter holes to the conveying device 102, while the impurities and larger particles remain on the surface of the screen 106, thus reducing the risk of blockage of the conveying pipeline and solving the problem that the conveying efficiency is affected after the damp and agglomerated pulverized coal and impurities enter the conveying pipeline. In addition, the reciprocating motion of the driving mechanism can prevent the screen 106 from being blocked and improve the screening efficiency.

[0033] Specifically, the roller pressing mechanism includes a rotating motor 2 fixed to the top of the housing 1, a rotating shaft 201 fixedly connected to the output end of the rotating motor 2, a pressure roller 202 arranged on one side of the rotating shaft 201 inside the storage cylinder 104, and a pushing brush 203. The pressure roller 202 is fixedly connected to the side surface of the rotating shaft 201, and one side of the pressure roller 202 abuts against the bottom of the storage cylinder 104. The pushing brush 203 is arranged on the side of the rotating shaft 201 away from the pressure roller 202 and is fixedly connected to the rotating shaft 201.

[0034] During use, the staff starts the rotating motor 2. The output end of the rotating motor 2 drives the rotating shaft 201 to rotate clockwise, so that the rotating shaft 201 drives the pressure roller 202 to rotate and performs a roller pressing on the pulverized coal in the storage cylinder 104. Through the roller pressing, the pulverized coal reaches better particle size and uniformity under the action of pressure. At the same time, the rotation of the rotating shaft 201 drives the pushing brush 203 to push the roller-pressed pulverized coal to the opening 105 of the storage cylinder 104, facilitating the subsequent discharge of the pulverized coal. The pressure roller 202 and the pushing brush 203 work together to improve the continuity of the pulverized coal treatment.

[0035] In order to support the other side of the pressure roller 202, an annular chute 204 is provided on the side of the storage cylinder 104. A slider 205 is slidably connected inside the annular chute 204. The other side of the pressure roller 202 is fixedly connected to the slider 205. The provided slider 205 can provide stable support for the other end of the pressure roller 202, avoiding the instability of the position of the pressure roller 202, thereby improving the precision and efficiency of pulverized coal processing and ensuring the uniformity and consistency of pulverized coal roll pressing.

[0036] In this embodiment, a switching plate 206 is rotatably connected to the opening 105 of the storage cylinder 104. A rotating mechanism for closing or opening the opening 105 by the switching plate 206 is provided at the bottom of the storage cylinder 104. The rotating mechanism can close the opening 105 when the pressure roller 202 passes through the opening 105 and open the opening 105 when the pushing brush 203 passes through. The provided rotating mechanism can prevent pulverized coal from leaking from the opening 105 during the roll pressing process and ensure the roll pressing effect.

[0037] Specifically, the rotating mechanism includes a receiving block 3 fixedly connected to the bottom of the storage cylinder 104, a first sliding block 301 slidably connected inside the receiving block 3, a first connecting rod 302 with two ends respectively rotatably connected to the switching plate 206 and the first sliding block 301, a first elastic member 303, a traction rope 304, a winding wheel 305, a gear 306, and an arc-shaped rack 307. A sliding groove 308 is provided inside the receiving block 3. The first sliding block 301 is slidably connected to the inner wall of the sliding groove 308. The first elastic member 303 is arranged between the first sliding block 301 and the side of the sliding groove 308. A support plate 309 is fixedly connected inside the material guiding plate 103. The gear 306 is rotatably connected to the support plate 309 through a rotating shaft 310. The winding wheel 305 is fixedly connected to the rotating shaft 310. The arc-shaped rack 307 is fixedly connected to the rotating shaft 201 and is arranged above the pushing brush 203. The arc-shaped rack 307 meshes with the gear 306. One end of the traction rope 304 is fixedly connected to the first sliding block 301, and the other end of the traction rope 304 is fixedly connected to the winding wheel 305 through a plurality of pulleys 311.

[0038] When the rotating shaft 201 drives the pressure roller 202 to rotate, the pressure roller 202 will roll the coal powder at the bottom of the storage cylinder 104, and the rotating shaft 201 will also drive the push brush 203 to rotate. Since the arc-shaped rack 307 is arranged above the push brush 203 and between the push brush 203 and the pressure roller 202, when the push brush 203 rotates to the position of the opening 105, the rotating shaft 201 first drives the arc-shaped rack 307 to mesh with the gear 306, thereby driving the rotating shaft 310 on the gear 306 to rotate. This makes the winding wheel 305 reel in one end of the traction rope 304, and the other end of the traction rope 304 pulls the first sliding block 301 to move along the inner wall of the sliding groove 308, pushing the first elastic member 303 to be compressed. Then, the first sliding block 301 drives the opening and closing plate 206 to rotate downward through the connecting rod, so that the opening 105 is opened. In this way, when the push brush 203 passes through the opening 105 , the opening 105 is opened first so that the coal powder falls from the opening 105 to the top of the screen 106 .

[0039] When the arc-shaped rack 307 is disengaged from the gear 306, the first elastic member 303 will push the first sliding block 301 to move in the opposite direction, thereby driving one end of the traction rope 304 to move, and the other end of the traction rope 304 drives the winding wheel 305 to rotate in the opposite direction. At the same time, the first sliding block 301 drives the opening 105 plate to close the opening 105 through the connecting rod. It is worth noting that the reason why the traction rope 304 is used to drive the first sliding block 301 to move, rather than using other transmission methods, is that the traction rope 304 can cooperate with the pulley 311 in a limited space to achieve the function of steering, thereby reducing the complexity of the overall structure.

[0040] The rotating mechanism in this embodiment allows the opening and closing of the opening and closing plate 206 to be synchronized with the operation of the roller pressing mechanism, thereby improving the coordination and stability of the device. Secondly, by utilizing the meshing mode of the arc-shaped rack 307 and the gear 306, when the rotating shaft 201 rotates a certain angle, the opening and closing plate 206 can be closed when the pressure roller 202 passes by, and the opening and closing plate 206 can be opened when the push brush 203 passes by, thereby forming a sequential action, reducing the complexity of the overall structure, and eliminating the need for additional drive source costs.

[0041] In addition, an arc-shaped rack 307 is provided on one side of the rotating shaft 201. When the rotating shaft 201 rotates, since this side is heavier, the rotating shaft 201 will be subjected to a larger centrifugal force, resulting in a larger shake during the rotation process. To avoid this, an arc-shaped plate 3071 with the same weight as the arc-shaped rack 307 can be provided on the other side of the rotating shaft 201, so as to balance the weight on both sides of the rotating shaft 201, reduce the centrifugal force, prevent the rotating shaft 201 from shaking during the rotation process, and improve the stability of the rotating shaft 201 during operation.

[0042] In this embodiment, the driving mechanism includes a pushing plate 4, moving blocks 401 arranged on both sides of the screen 106, sliding wheels 405, and a plurality of second elastic members 402 (the first elastic member 303 and the second elastic member 402 can both be selected as cylindrical compression springs). One end of the rotating shaft 201 extends to the bottom of the storage cylinder 104. The pushing plate 4 is fixedly connected to the side of the rotating shaft 201 close to the screen 106. The four corners of the pushing plate 4 are all in an arc-shaped structure, and arc-shaped grooves 403 are provided on the four side surfaces of the pushing plate 4. Each arc-shaped groove 403 is circumferentially arranged with the rotating shaft 201 as the center. A support frame 404 is fixedly connected to one side of the moving block 401 close to the pushing plate 4. The sliding wheel 405 is arranged on the support frame 404 and is rotatably connected to the support frame 404, and the sliding wheel 405 is slidably connected to the arc-shaped groove 403. One end of each second elastic member 402 is fixedly connected to the inner wall of the housing 1, and one end of each second elastic member 402 is fixedly connected to the moving block 401.

[0043] When the rotating shaft 201 rotates, the rotating shaft 201 drives the pushing plate 4 to rotate. At the same time, the circular arc-shaped side of the pushing plate 4 pushes the sliding wheel 405 to move. The sliding wheel 405 drives the support frame 404 to move, the support frame 404 drives the moving block 401, and the moving block 401 drives the screen 106 to move and move in the direction of compressing the second elastic member 402. When the sliding wheel 405 contacts the arc-shaped groove 403 on the rotating block, the second elastic member 402 reversely pushes the moving block 401, thereby driving the support frame 404 and the sliding wheel 405 to move. In this way, the reciprocating movement of the screen 106 is realized, thereby improving the screening efficiency. At the same time, the rotation of the rotating shaft 201 is used to drive the movement of the pushing plate 4, providing power for the reciprocating movement of the screen 106, eliminating the need for an additional driving source, and simplifying the device structure.

[0044] The circumferential arrangement of each arc-shaped groove 403 with the rotating shaft 201 as the center is aimed at making the weights in all directions of the rotating shaft 201 equal, reducing the centrifugal force generated when the rotating shaft 201 rotates, and further improving its rotation stability. The reason for rotatably connecting the sliding wheel 405 to the support frame 404 is that the frictional force generated by dynamic friction is smaller than that of static friction, thereby reducing the friction between the sliding wheel 405 and the pushing plate 4, improving the smoothness of pushing, and further extending the service life of the driving mechanism.

[0045] Secondly, a number of fixing rods 406 are fixedly connected inside the housing 1. An active rod 407 is provided on one side of the fixing rod 406 close to the moving block 401. The active rod 407 is slidably connected to the inside of the fixing rod 406. Each second elastic member 402 is sleeved on the outer surface of the fixing rod 406. The provided fixing rods 406 and active rods 407 provide a guiding effect for the movement of the moving block 401 and the screen 106, making the reciprocating movement of the screen 106 more stable and accurate, ensuring the position accuracy of the screen 106 during the screening process, and preventing it from shifting. At the same time, it can play a role in protecting and positioning the second elastic member 402, preventing the second elastic member 402 from being twisted or displaced during operation, ensuring that it can normally perform the functions of buffering and resetting, and extending the service life of the second elastic member 402.

[0046] Working principle:

[0047] During use, the staff starts the rotating motor 2. The output end of the rotating motor 2 drives the rotating shaft 201 to rotate clockwise, so that the rotating shaft 201 drives the pressure roller 202 to rotate, and rolls the pulverized coal in the storage cylinder 104. Through rolling, the pulverized coal reaches better particle size and uniformity under the action of pressure. At the same time, the drive of the rotating shaft 201 causes the pushing brush 203 to push the rolled pulverized coal to the opening 105 of the storage cylinder 104, facilitating the subsequent discharge of the pulverized coal. The pressure roller 202 and the pushing brush 203 work together to improve the continuity of pulverized coal processing.

[0048] At the same time, the rotating shaft 201 also drives the pushing brush 203 to rotate. Since the arc-shaped rack 307 is arranged above the pushing brush 203 and is located between the pushing brush 203 and the pressure roller 202, when the pushing brush 203 rotates to the position of the opening 105, the rotating shaft 201 first drives the arc-shaped rack 307 to engage with the gear 306, thereby driving the rotating shaft 310 on the gear 306 to rotate. This causes the winding wheel 305 to wind one end of the traction rope 304, and the other end of the traction rope 304 pulls the first sliding block 301 to move along the inner wall of the sliding groove 308, pushing the first elastic member 303 to be compressed. Then, the first sliding block 301 drives the opening and closing plate 206 to rotate downward through the connecting rod, so that the opening 105 is opened. In this way, when the pushing brush 203 passes through the opening 105, the opening 105 is first opened so that the pulverized coal can fall from the opening 105 to the upper part of the screen 106.

[0049] When the arc-shaped rack 307 disengages from the gear 306, the first elastic member 303 will push the first sliding block 301 to move in the opposite direction, thereby driving one end of the traction rope 304 to move, and the other end of the traction rope 304 drives the winding wheel 305 to rotate in the opposite direction. At the same time, the first sliding block 301 drives the opening 105 plate to close the opening 105 through the connecting rod.

[0050] Meanwhile, the rotating shaft 201 drives the pushing plate 4 to rotate. At the same time, the arc-shaped side of the pushing plate 4 pushes the sliding wheel 405 to move. The sliding wheel 405 drives the support frame 404 to move, the support frame 404 drives the moving block 401, and the moving block 401 drives the sieve mesh 106 to move in the direction of compressing the second elastic member 402. When the sliding wheel 405 contacts the arc-shaped groove 403 on the rotating block, the second elastic member 402 reversely pushes the moving block 401, thereby driving the support frame 404 and the sliding wheel 405 to move. This reciprocation realizes the reciprocating movement of the sieve mesh 106, thereby improving the screening efficiency. The screened pulverized coal will then fall to the bottom of the housing 1 and be transported by the conveying device 102.

[0051] Embodiment 2:

[0052] Based on Embodiment 1, referring to Figures 8-9 , in this embodiment, to facilitate the staff to collect the impurities on the sieve mesh 106, the sieve mesh 106 is divided into a first filter mesh 1061 and a second filter mesh 1062, and the first filter mesh 1061 and the second filter mesh 1062 are respectively rotatably connected to the corresponding moving blocks 401. An opening and closing mechanism for rotating the first filter mesh 1061 and the second filter mesh 1062 downward is provided inside the housing 1. The opening and closing mechanism includes a second connecting rod 5, a third connecting rod 501, a moving rod 502, and a power assembly for driving the moving rod 502 to move downward. One end of the second connecting rod 5 is rotatably connected to the first filter mesh 1061, one end of the third connecting rod 501 is rotatably connected to the second filter mesh 1062, and the other ends of the second connecting rod 5 and the third connecting rod 501 are respectively rotatably connected to both sides of the moving rod 502.

[0053] When it is necessary to clean the impurities on the sieve mesh 106, the power assembly is started. The power assembly drives the moving rod 502 to move downward, and then drives the second connecting rod 5 and the third connecting rod 501 to move downward, thereby causing the first filter mesh 1061 and the second filter mesh 1062 to rotate around their respective moving blocks 401, so that the two tilt downward. At this time, the impurities on the sieve mesh 106 will fall downward under the action of gravity, which is convenient for the staff to collect. In addition, when the first filter mesh 1061 and the second filter mesh 1062 are tilted, the driving mechanism can also be started to make it reciprocate, so as to prompt the impurities on the filter mesh to fall automatically, thus facilitating cleaning.

[0054] Specifically, the power assembly includes a pushing cylinder 503, a slide rail 504, a second slider 505, and a slide plate 506. The slide rail 504 is arranged above the moving rod 502. The second slider 505 is fixedly connected to the top of the moving rod 502 and is slidably connected to the slide rail 504. A connection groove 507 is provided on the side of the housing 1. The slide plate 506 is located outside the housing 1, and the slide rail 504 is fixedly connected to the slide plate 506 through a connection block 508. The pushing cylinder 503 is fixed to the side of the housing 1, and the telescopic rod of the pushing cylinder 503 is fixedly connected to the slide plate 506. The connection block 508 is slidably connected to the inner wall of the connection groove 507. The length of the slide plate 506 is greater than the length of the connection groove 507, and the slide plate 506 is slidably connected to the side of the housing 1. Designing the length of the slide plate 506 to be greater than the length of the connection groove 507 can prevent the connection groove 507 from being exposed outside when the pushing cylinder 503 pushes the slide plate 506, thereby preventing external impurities from entering the interior of the housing 1.

[0055] During use, the staff activates the pushing cylinder 503. The telescopic rod of the pushing cylinder 503 drives the slide plate 506 to move downward. The slide plate 506 drives the slide rail 504 downward through the connection block 508. The slide rail 504 drives the moving rod 502 to move downward through the second slider 505. Further, the second connecting rod 5 and the third connecting rod 501 move downward, and finally the first filter screen 1061 and the second filter screen 1062 rotate around their respective moving blocks 401, making the two tilt downward. The design of the slide rail 504 and the second slider 505 at the top of the moving rod 502 enables the sieve 106 not to drive the power assembly to move together during reciprocating movement, thereby preventing the power assembly from shortening its service life due to vibration and improving the durability of the power assembly.

[0056] Secondly, a support block 509 is fixedly connected inside the housing 1. A guide rod 510 is fixedly connected to the support block 509. The slide rail 504 is slidably connected to the guide rod 510. The cooperation between the guide rod 510 and the slide rail 504 can prevent the slide rail 504 from shaking or shifting during movement, ensuring the normal operation of the opening and closing mechanism, enabling the first filter screen 1061 and the second filter screen 1062 to accurately rotate downward, and facilitating maintenance and cleaning.

[0057] Working principle:

[0058] When it is necessary to clean the impurities on the screen 106, the pushing cylinder 503 is started. The telescopic rod of the pushing cylinder 503 drives the sliding plate 506 to move downward. The sliding plate 506 drives the sliding rail 504 downward through the connecting block 508. The sliding rail 504 drives the moving rod 502 to move downward through the second sliding block 505. Further, the second connecting rod 5 and the third connecting rod 501 move downward, and finally the first filter screen 1061 and the second filter screen 1062 rotate around their respective moving blocks 401, making the two tilt downward. At this time, the impurities on the screen 106 will fall downward under the action of gravity, facilitating the collection by the staff. In addition, when the first filter screen 1061 and the second filter screen 1062 are tilted, the driving mechanism can also be started to move reciprocally, prompting the impurities on the filter screen to fall automatically, thus facilitating cleaning.

[0059] When the screen 106 moves under the action of the driving mechanism, the first filter screen 1061 and the second filter screen 1062 will drive the second connecting rod 5 and the third connecting rod 501 to move. The second connecting rod 5 and the third connecting rod 501 will drive the moving rod 502 to move. The movement will drive the second sliding block 505 to move. The second sliding block 505 will move on the sliding rail 504, thus preventing the screen 106 from driving the power assembly to move, and further preventing the power assembly from shortening its service life due to vibration and improving the durability of the power assembly.

[0060] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pulverized coal input device for a boiler, characterized in that, It includes a housing (1). A feed inlet (101) is provided at the top of the housing (1). A conveying device (102) for conveying pulverized coal is provided at the bottom of the housing (1). A guide plate (103) is fixedly connected inside the housing (1). A storage cylinder (104) is fixed to the bottom of the guide plate (103). A roller pressing mechanism is provided inside the storage cylinder (104). An opening (105) is provided at the bottom of one side of the storage cylinder (104). A screen (106) is provided on the side of the housing (1) away from the storage cylinder (104). A driving mechanism for reciprocally moving the screen (106) is provided inside the housing (1).

2. The coal powder input device for a boiler according to claim 1, characterized in that: The roller pressing mechanism includes a rotating motor (2) provided at the top of the housing (1), a rotating shaft (201) fixedly connected to the output end of the rotating motor (2), a pressing roller (202) provided on one side of the rotating shaft (201) inside the storage cylinder (104), and a pushing brush (203). The pressing roller (202) is fixedly connected to the side surface of the rotating shaft (201), and one side of the pressing roller (202) abuts against the bottom of the storage cylinder (104). The pushing brush (203) is provided on the side of the rotating shaft (201) away from the pressing roller (202), and the pushing brush (203) is fixedly connected to the rotating shaft (201). An annular chute (204) is provided on the side surface of the storage cylinder (104), and a slider (205) is slidably connected inside the annular chute (204). The other side of the pressing roller (202) is fixedly connected to the slider (205).

3. The pulverized coal input device for a boiler according to claim 2, characterized in that: A switching plate (206) is rotatably connected at the opening (105) of the storage cylinder (104). A rotating mechanism for closing or opening the opening (105) is provided at the bottom of the storage cylinder (104). The rotating mechanism can close the opening (105) when the pressing roller (202) passes by the opening (105) and open the opening (105) when the pushing brush (203) passes by.

4. A boiler pulverized coal input device according to claim 3, characterized in that: The rotating mechanism includes a receiving block (3) fixedly connected to the bottom of the storage cylinder (104), a first sliding block (301) slidably connected to the inside of the receiving block (3), a first connecting rod (302) with two ends respectively rotatably connected to the opening and closing plate (206) and the first sliding block (301), a first elastic member (303), a traction rope (304), a winding wheel (305), a gear (306), and an arc-shaped rack (307). A sliding groove (308) is provided inside the receiving block (3), and the first sliding block (301) is slidably connected to the inner wall of the sliding groove (308). The first elastic member (303) is arranged between the first sliding block (301) and the side surface of the sliding groove (308). A support plate (309) is fixedly connected inside the material guiding plate (103). The gear (306) is rotatably connected to the support plate (309) through a rotating shaft (310). The winding wheel (305) is fixedly connected to the rotating shaft (310). The arc-shaped rack (307) is fixedly connected to the rotating shaft (201), and the arc-shaped rack (307) is arranged above the pushing brush (203). The arc-shaped rack (307) meshes with the gear (306). One end of the traction rope (304) is fixedly connected to the first sliding block (301), and the other end of the traction rope (304) is fixedly connected to the winding wheel (305) through a plurality of pulleys (311).

5. The pulverized coal input device for a boiler according to claim 2, characterized in that: The driving mechanism includes a pushing plate (4), moving blocks (401) arranged on both sides of the screen (106), sliding wheels (405), and a plurality of second elastic members (402). One end of the rotating shaft (201) extends to the bottom of the storage cylinder (104). The pushing plate (4) is fixedly connected to the side of the rotating shaft (201) close to the screen (106). The four corners of the pushing plate (4) are all in an arc-shaped structure, and arc-shaped grooves (403) are provided on the four side surfaces of the pushing plate (4). Each arc-shaped groove (403) is circumferentially arranged with the rotating shaft (201) as the center. One of the moving blocks (401) is fixedly connected to a support frame (404) on the side close to the pushing plate (4). The sliding wheel (405) is arranged on the support frame (404) and is rotatably connected to the support frame (404), and the sliding wheel (405) is slidably connected to the arc-shaped groove (403). One end of each of the second elastic members (402) is fixedly connected to the inner wall of the housing (1), and one end of each of the second elastic members (402) is fixedly connected to the moving block (401).

6. The pulverized coal input device for a boiler according to claim 5, characterized in that: A plurality of fixing rods (406) are fixedly connected inside the housing (1), and a movable rod (407) is provided on the side of the fixing rod (406) close to the moving block (401), and the movable rod (407) is slidably connected to the inside of the fixing rod (406). Each of the second elastic members (402) is sleeved on the outer surface of the fixing rod (406).

7. The pulverized coal input device for a boiler according to claim 5, characterized in that: The screen (106) includes a first filter screen (1061) and a second filter screen (1062). The first filter screen (1061) and the second filter screen (1062) are respectively rotatably connected to corresponding moving blocks (401). An opening and closing mechanism for rotating the first filter screen (1061) and the second filter screen (1062) downward is provided inside the housing (1). The opening and closing mechanism includes a second connecting rod (5), a third connecting rod (501), a moving rod (502), and a power assembly for driving the moving rod (502) to move downward. One end of the second connecting rod (5) is rotatably connected to the first filter screen (1061), one end of the third connecting rod (501) is rotatably connected to the second filter screen (1062), and the other ends of the second connecting rod (5) and the third connecting rod (501) are respectively rotatably connected to both sides of the moving rod (502).

8. The pulverized coal input device for a boiler according to claim 7, characterized in that: The power assembly includes a pushing cylinder (503), a slide rail (504), a second sliding block (505), and a sliding plate (506). The slide rail (504) is arranged above the moving rod (502). The second sliding block (505) is fixedly connected to the top of the moving rod (502). The second sliding block (505) is slidably connected to the slide rail (504). A connecting groove (507) is provided on the side surface of the housing (1). The sliding plate (506) is arranged outside the housing (1), and the slide rail (504) is fixedly connected to the sliding plate (506) through a connecting block (508). The pushing cylinder (503) is fixed to the side surface of the housing (1), and the telescopic rod of the pushing cylinder (503) is fixedly connected to the sliding plate (506).

9. The pulverized coal input device for a boiler according to claim 8, characterized in that: A support block (509) is fixedly connected inside the housing (1). A guide rod (510) is fixedly connected to the support block (509). The slide rail (504) is slidably connected to the guide rod (510).

10. A boiler pulverized coal input device according to claim 8, characterized in that: The connecting block (508) is slidably connected to the inner wall of the connecting groove (507). The length of the sliding plate (506) is greater than the length of the connecting groove (507), and the sliding plate (506) is slidably connected to the side surface of the housing (1).

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