Coal dropping pipe for boiler of thermal power plant

Abstract

The utility model discloses a coal drop pipe of a thermal power plant boiler, which relates to the technical field of thermal power plants and comprises a box body, a screening and conveying mechanism is arranged on the surface of the box body, and an opening and closing mechanism is arranged on the surface of the box body. The motor drives the first rotating shaft to rotate, the first gear on the surface of the first rotating shaft rotates to enable the second gear meshed with the first gear to rotate, the second gear drives the rotating rod to enable the crank to do circular motion with the rotating rod as the circle center, and the movable rod rotates along with the crank to drive the adjusting connecting rod to move up and down. At the moment, a connecting rod is adjusted to pull a sieve plate to move up and down, a first sliding rail fixed to the surface of a motor limits the sieve plate, coal shakes on the surface of the sieve plate, too small particles and coal ash in the coal fall into a box body through sieve holes in the surface of the sieve plate and are collected, and large-particle coal enters a coal falling pipe through the inclined sieve plate; the first rotating shaft drives the second rotating shaft to rotate, the paddles drive the coal to move forwards until the coal enters the boiler, and the adaptability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of thermal power plant, concretely relates to a thermal power plant boiler coal falling pipe. BACKGROUND

[0002] The patent publication number CN214198745U discloses a thermal power plant boiler coal falling pipe, which comprises a coal falling main pipe body, a pipe opening anti-blocking assembly, a gas injection assembly, a linkage power assembly and an inner convex ring.

[0003] In order to solve the problem of ensuring smooth internal transportation and saving manual cleaning work, the prior art uses a powerful airflow to blow off the powder particles attached to the inner wall of the coal falling main pipe body, but coal may not enter the boiler smoothly due to its own weight, and there are a large number of fine particles on the surface of the coal, which may cause blockage and coal explosion. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a thermal power plant boiler coal falling pipe to solve the problems in the background art.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A thermal power plant boiler coal falling pipe comprises a box body, the surface of the box body is provided with a screening and conveying mechanism, and the surface of the box body is provided with an opening and closing mechanism.

[0007] The screening and conveying mechanism comprises first sliding rails, the first sliding rails are fixedly installed on the surface of the box body, the first sliding rails are provided with four groups, the first sliding rails are uniformly distributed on both sides of the box body, the surface of the first sliding rail is slidably installed with a screen plate, the surface of the screen plate is provided with screen holes, and the screen holes are uniformly distributed on the surface of the screen plate.

[0008] The further improvement of the utility model technical scheme is that the surface of the screen plate is fixedly installed with an adjusting connecting rod, one end of the screen plate and the adjusting connecting rod is fixedly connected and is higher than the other end of the screen plate, the bottom end of the adjusting connecting rod is provided with a sliding groove, the bottom end of the adjusting connecting rod is movably installed with a movable rod, and one end of the movable rod is fixedly installed with a crank.

[0009] The further improvement in the technical scheme of the utility model lies in that: one end of the crank is fixedly installed with a rotating rod, the surface of the rotating rod is fixedly installed with a second gear, the surface of the second gear is engaged with a first gear, the surface of the first gear is fixedly installed with a first rotating shaft, and the surface of the first rotating shaft is fixedly installed with a motor.

[0010] The further improvement in the technical scheme of the utility model lies in that: the surface of the first rotating shaft is fixedly installed with a second rotating shaft, the surface of the second rotating shaft is fixedly installed with a paddle, the surface of the second gear is movably installed with a coal conveying pipe, the surface of the coal conveying pipe is fixedly installed with a coal falling pipe, and the coal falling pipe is matched with the box.

[0011] The further improvement in the technical scheme of the utility model lies in that: the opening and closing mechanism comprises a supporting beam, the supporting beam is fixedly installed on the surface of the box, the top end of the supporting beam is fixedly installed with a supporting frame, the top end of the supporting frame is fixedly installed with an electronic telescopic rod, and the output end of the electronic telescopic rod is fixedly installed with a fixing rod.

[0012] The further improvement in the technical scheme of the utility model lies in that: the bottom end of the fixing rod is fixedly installed with a sliding plate, the surface of the sliding plate is provided with a sliding groove, the sliding grooves are symmetrically distributed on the surface of the supporting beam, the surface of the sliding plate is slidably installed with a second sliding rail, the second sliding rail is provided with two groups, and the second sliding rails are symmetrically distributed on the surface of the supporting beam.

[0013] The further improvement in the technical scheme of the utility model lies in that: the surface of the sliding groove is slidably installed with a sliding rod, the surface of the sliding rod is fixedly installed with a sliding block, the surface of the sliding block is slidably installed with a third sliding rail, the third sliding rail is fixedly installed on the surface of the supporting beam, the surface of the sliding block is fixedly installed with a baffle, and the baffle is matched with the box.

[0014] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0015] 1. The utility model provides a boiler coal falling pipe of thermal power plant adopts the cooperation of motor, first rotation axis, first gear, rotation rod, crank, movable rod, adjusting connecting rod, sieve plate, coal conveying pipe, coal falling pipe, first sliding rail, sieve hole, second gear, paddle, second rotation axis, through the coal falling on the surface of sieve plate, motor drives first rotation axis to rotate, the first gear on the surface of first rotation axis rotates and makes the second gear that meshes with it rotate, and the second gear drives rotation rod and makes the crank do circular motion with rotation rod as center, the movable rod rotates with crank and drives adjusting connecting rod to move up and down, adjusting connecting rod pulls sieve plate and moves up and down at this time, and the first sliding rail on the surface of motor is positioned to sieve plate, and the coal in the surface of sieve plate shakes, and the too small particle in coal and coal ash fall into the box from the sieve hole on the surface of sieve plate and are collected, and the big coal particle enters coal falling pipe from the sieve plate of inclination, and the first rotation axis driven by motor drives second rotation axis to rotate at this time, and the paddle on the surface of second rotation axis drives coal to move forward when coal enters coal conveying pipe, until into the boiler, improve the adaptability of device.

[0016] 2. The utility model provides a boiler coal falling pipe of thermal power plant adopts the cooperation of support beam, support frame, electronic telescopic link, fixed link, second sliding rail, sliding block, sliding slot, sliding rod, sliding block, third sliding rail, baffle, through support beam fixed on the top of box, when needing to feed boiler, the electronic telescopic link of support frame surface pushes fixed link, and fixed link pushes sliding plate and makes sliding plate slide down on the surface of second sliding rail, the sliding slot on the surface of sliding plate displacement drives the sliding rod in the sliding slot to slide to one end of the sliding slot at this time, and the sliding rod drives sliding block, makes sliding block slide on third sliding rail, simultaneously drives the baffle on the bottom end of sliding block and opens, and the baffle no longer covers the box, makes coal can enter coal falling pipe, when the boiler needs to stop coal supply, electronic telescopic link pulls fixed link, and sliding plate displacement makes the sliding rod displacement to the other end of the sliding slot, and the sliding block is close to each other, drives the baffle and closes, can seal the box, improve the adaptability of device. ACCURACY OF DRAWINGS

[0017] Fig. 1 It is the three-dimensional structure schematic diagram of the utility model;

[0018] Fig. 2 It is the structure schematic diagram of the axial view of the utility model;

[0019] Fig. 3 It is the structure schematic diagram of the sieve plate of the utility model;

[0020] Fig. 4 It is the structure schematic diagram of the sieve plate of the utility model;

[0021] Fig. 5 It is the structure schematic diagram of the coal conveying pipe of the utility model;

[0022] Fig. 6 The utility model discloses a structure schematic diagram of opening and closing mechanism.

[0023] In the drawing: 1, box body;2, screening conveying mechanism;201, motor;202, first rotation axis;203, first gear wheel;204, rotation rod;205, crank;206, movable rod;207, adjusting connecting rod;208, sieve plate;209, coal conveying pipe;210, coal dropping pipe;211, first slide rail;212, sieve hole;213, second gear wheel;214, paddle;215, second rotation axis;3, opening and closing mechanism;301, support beam;302, support frame;303, electronic telescopic rod;304, fixed rod;305, second slide rail;306, sliding plate;307, sliding groove;308, sliding rod;309, sliding block;310, third slide rail;311, baffle. DETAILED DESCRIPTION

[0024] The utility model will be further explained in detail in connection with the embodiment:

[0025] Embodiment 1

[0026] As Figs. 1-6 shown, the utility model provides a coal dropping pipe of boiler of thermal power plant, including box body 1, the surface of box body 1 is provided with screening conveying mechanism 2, the surface of box body 1 is provided with opening and closing mechanism 3, screening conveying mechanism 2 includes first slide rail 211, and first slide rail 211 is fixedly installed on the surface of box body 1, and first slide rail 211 is provided with four groups, and first slide rail 211 evenly distributes in the both sides of box body 1, and the surface of first slide rail 211 is slidably installed with sieve plate 208, and the surface of sieve plate 208 is provided with sieve hole 212, and sieve hole 212 evenly distributes on the surface of sieve plate 208, and the one end of sieve plate 208 and adjusting connecting rod 207 fixed connection is higher than the other end of sieve plate 208, and the bottom of adjusting connecting rod 207 is provided with sliding groove, and the surface of sieve plate 208 is fixedly installed with adjusting connecting rod 207, and the bottom of adjusting connecting rod 207 movably installs with movable rod 206, and one end of movable rod 206 is fixedly installed with crank 205, and one end of crank 205 is fixedly installed with rotation rod 204, and the surface of rotation rod 204 is fixedly installed with second gear wheel 213, and the surface of second gear wheel 213 is engaged with first gear wheel 203, and the surface of first gear wheel 203 is fixedly installed with first rotation axis 202, and the surface of first rotation axis 202 is fixedly installed with motor 201, and the surface of first rotation axis 202 is fixedly installed with second rotation axis 215, and the surface of second rotation axis 215 is fixedly installed with paddle 214, and the surface of coal conveying pipe 209 movably installs with second gear wheel 213, and the surface of coal conveying pipe 209 is fixedly installed with coal dropping pipe 210, and coal dropping pipe 210 is adapted with box body 1.

[0027] In the embodiment, the coal falls on the surface of the sieve plate 208, the motor 201 drives the first rotating shaft 202 to rotate, the first gear 203 on the surface of the first rotating shaft 202 rotates to drive the second gear 213 to rotate, the second gear 213 drives the rotating rod 204 to make the crank 205 make a circular motion with the rotating rod 204 as the center, the movable rod 206 drives the adjusting connecting rod 207 to move up and down along with the rotation of the crank 205, the adjusting connecting rod 207 pulls the sieve plate 208 to move up and down, the first sliding rail 211 fixed on the surface of the motor 201 limits the sieve plate 208, the coal on the surface of the sieve plate 208 shakes, the too small particles and the coal ash in the coal fall into the box body 1 through the sieve hole 212 on the surface of the sieve plate 208 and are collected, and the large particle coal enters the coal falling pipe 210 through the inclined sieve plate 208, the first rotating shaft 202 driven by the motor 201 drives the second rotating shaft 215 to rotate, the paddle 214 on the surface of the second rotating shaft 215 drives the coal to move forward when the coal enters the coal conveying pipe 209, and the coal enters the boiler, and the adaptability of the device is improved.

[0028] Embodiment 2

[0029] As Figs. 1-6 shown, on the basis of the embodiment 1, the utility model provides a technical scheme: preferably, the opening and closing mechanism 3 includes support beam 301, support beam 301 fixed mounting is at the surface of box body 1, support beam 301's top fixed mounting has support frame 302, support frame 302's top fixed mounting has electronic telescopic rod 303, electronic telescopic rod 303's output fixed mounting has fixed rod 304, fixed rod 304's bottom fixed mounting has sliding plate 306, sliding plate 306's surface is provided with sliding groove 307, sliding groove 307 is symmetrically distributed at the surface of support beam 301, sliding plate 306's surface sliding installation has second sliding rail 305, second sliding rail 305 sets up two groups, second sliding rail 305's symmetric distribution is at the surface of support beam 301, sliding groove 307's surface sliding installation sliding rod 308, sliding rod 308's surface fixed mounting has sliding block 309, sliding block 309's surface sliding installation has third sliding rail 310, third sliding rail 310 fixed mounting is at the surface of support beam 301, sliding block 309's surface fixed mounting has baffle 311, baffle 311 and box body 1 are adapted.

[0030] In the embodiment, the support beam 301 is fixed at the top end of the box 1. When the boiler needs to be fed, the electronic telescopic rod 303 on the surface of the support frame 302 pushes the fixed rod 304, the fixed rod 304 pushes the sliding plate 306 to make the sliding plate 306 slide downward on the surface of the second sliding rail 305. At this time, the sliding groove 307 on the surface of the sliding plate 306 is displaced downward to drive the sliding rod 308 in the sliding groove 307 to slide to one end of the sliding groove 307. The sliding rod 308 drives the sliding block 309 to slide on the third sliding rail 310, and at the same time drives the baffle 311 at the bottom end of the sliding block 309 to open. The baffle 311 no longer blocks the box 1, so that the coal can enter the coal falling pipe 210. When the boiler needs to stop supplying coal, the electronic telescopic rod 303 pulls the fixed rod 304, and the sliding plate 306 is displaced upward, so that the sliding rod 308 is displaced to the other end of the sliding groove 307, the sliding blocks 309 are close to each other, and the baffle 311 is closed, so that the box 1 can be sealed, and the adaptability of the device is improved.

[0031] The working principle of the coal falling pipe of the boiler in the power plant will be described below.

[0032] As Figs. 1-6As shown, by the support beam 301 fixed at the top end of the box 1, when the boiler needs to be fed, the electronic telescopic rod 303 on the surface of the support frame 302 pushes the fixed rod 304, the fixed rod 304 pushes the sliding plate 306 to make the sliding plate 306 slide downward on the surface of the second sliding rail 305, at this time the sliding groove 307 on the surface of the sliding plate 306 is displaced downward to drive the sliding rod 308 inside the sliding groove 307 to slide to one end of the sliding groove 307, the sliding rod 308 drives the sliding block 309 to make the sliding block 309 slide on the third sliding rail 310, at the same time the baffle 311 at the bottom end of the sliding block 309 is opened to no longer block the box 1, so that the coal can enter the coal falling pipe 210, and at the same time the coal falls on the surface of the sieve plate 208, at this time the motor 201 drives the first rotating shaft 202 to rotate, the first gear 203 on the surface of the first rotating shaft 202 rotates to make the second gear 213 meshing therewith rotate, the second gear 213 drives the rotating rod 204 to make the crank 205 make circular motion with the rotating rod 204 as the center, the movable rod 206 rotates with the crank 205 to drive the adjusting connecting rod 207 to move up and down, at this time the adjusting connecting rod 207 pulls the sieve plate 208 to move up and down, the first sliding rail 211 fixed on the surface of the motor 201 limits the sieve plate 208, the coal on the surface of the sieve plate 208 shakes, the too small particles and coal ash in the coal fall into the box 1 through the sieve hole 212 on the surface of the sieve plate 208 and are collected, and the large particle coal enters the coal falling pipe 210 through the inclined sieve plate 208, at this time the first rotating shaft 202 driven by the motor 201 drives the second rotating shaft 215 to rotate, the paddle 214 on the surface of the second rotating shaft 215 drives the coal to move forward when the coal enters the coal conveying pipe 209, until entering the boiler, when the boiler needs to stop the coal supply, the electronic telescopic rod 303 pulls the fixed rod 304, the sliding plate 306 is displaced upward to make the sliding rod 308 displaced to the other end of the sliding groove 307, the sliding blocks 309 are close to each other to drive the baffle 311 to close, so that the box 1 can be sealed, and the adaptability of the device is improved.

[0033] The above is a detailed description of the present application, but some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, without departing from the spirit of the present application, the modifications or improvements are within the scope of the present application.

Claims

1. A coal drop pipe for a boiler of a thermal power plant, comprising a box (1), characterized in that: The surface of the box (1) is provided with a screening conveying mechanism (2), and the surface of the box (1) is provided with an opening and closing mechanism (3); The screening conveying mechanism (2) comprises a first sliding rail (211), the first sliding rail (211) is fixedly installed on the surface of the box (1), the first sliding rail (211) is provided with four groups, the first sliding rails (211) are uniformly distributed on both sides of the box (1), and the surface of the first sliding rail (211) is slidably installed with a screen plate (208); the surface of the screen plate (208) is provided with screen holes (212), and the screen holes (212) are uniformly distributed on the surface of the screen plate (208).

2. A coal drop pipe for a boiler of a thermal power plant according to claim 1, characterized in that: The surface of the screen plate (208) is fixedly installed with an adjusting connecting rod (207), one end of the screen plate (208) and the adjusting connecting rod (207) is fixedly connected and higher than the other end of the screen plate (208), the bottom end of the adjusting connecting rod (207) is provided with a sliding groove, and the bottom end of the adjusting connecting rod (207) is movably installed with a movable rod (206); one end of the movable rod (206) is fixedly installed with a crank (205).

3. A coal drop pipe for a boiler of a thermal power plant according to claim 2, characterized in that: One end of the crank (205) is fixedly installed with a rotating rod (204), the surface of the rotating rod (204) is fixedly installed with a second gear (213), the surface of the second gear (213) is engaged with a first gear (203), the surface of the first gear (203) is fixedly installed with a first rotating shaft (202), and the surface of the first rotating shaft (202) is fixedly installed with a motor (201).

4. A coal drop pipe for a boiler of a thermal power plant according to claim 3, characterized in that: The surface of the first rotating shaft (202) is fixedly installed with a second rotating shaft (215), the surface of the second rotating shaft (215) is fixedly installed with a paddle (214), the surface of the second gear (213) is movably installed with a coal conveying pipe (209), the surface of the coal conveying pipe (209) is fixedly installed with a coal falling pipe (210), and the coal falling pipe (210) is matched with the box (1).

5. A coal drop tube for a boiler of a fossil fuel power plant according to claim 1, characterized in that: The opening and closing mechanism (3) comprises a support beam (301), the support beam (301) is fixedly installed on the surface of the box (1), the top end of the support beam (301) is fixedly installed with a support frame (302), the top end of the support frame (302) is fixedly installed with an electronic telescopic rod (303), and the output end of the electronic telescopic rod (303) is fixedly installed with a fixed rod (304).

6. A coal drop tube for a boiler of a fossil fuel power plant according to claim 5, characterized in that: The bottom end of the fixed rod (304) is fixedly installed with a sliding plate (306), the surface of the sliding plate (306) is provided with a sliding groove (307), the sliding grooves (307) are symmetrically distributed on the surface of the support beam (301), the surface of the sliding plate (306) is slidably installed with a second sliding rail (305), the second sliding rail (305) is provided with two groups, and the second sliding rails (305) are symmetrically distributed on the surface of the support beam (301).

7. A coal drop tube for a boiler of a fossil fuel power plant according to claim 6, characterized in that: The surface of the chute (307) is slidably installed with a sliding rod (308), the surface of the sliding rod (308) is fixedly installed with a sliding block (309), the surface of the sliding block (309) is slidably installed with a third sliding rail (310), the third sliding rail (310) is fixedly installed on the surface of the supporting beam (301), the surface of the sliding block (309) is fixedly installed with a baffle (311), and the baffle (311) is matched with the box body (1).

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