Boiler slag discharge system with flexible double-tube sealing structure

Abstract

The present invention relates to the technical field of boiler slag discharge, in particular to a boiler slag discharge system with a flexible double-tube sealing structure, comprising a furnace bottom, one side of the bottom of the furnace bottom is rotatably connected to a rotating shaft, the furnace bottom is rotatably connected to a movable plate through the rotating shaft, and the bottom of the other side of the furnace bottom is movably connected to an induction switch. The advantages of the present invention are: the movable plate is kept tilted by using a compression spring and a torsion spring, and the slag is automatically tilted to one side of the outlet under the action of the inclined surface to complete the discharge, when there is a lot of slag accumulation on the movable plate, the motor drives the rotating rod and the stirring rod to rotate toward the discharge port, accelerates the discharge of the waste slag on the movable plate, and avoids the situation that the waste slag in the furnace bottom is accumulated and discharged in time, and the frequency converter is used to receive the operation instruction of the induction switch, when the gravity of the waste slag on the movable plate can overcome the combined force of the torsion spring and the compression spring to press the induction switch downward, the motor is started to drive the rotating rod and the stirring rod to rotate to accelerate the slag discharge speed of the waste slag accumulated at the furnace bottom.

Description

Technical Field

[0001] The invention relates to the technical field of boiler deslagging, in particular to a boiler deslagging system with a flexible double-tube sealing structure. Background Art

[0002] Boiler deslagging refers to the process of continuously discharging slag to ensure continuous and safe operation of the boiler. Most boilers use solid deslagging, and a few use liquid deslagging. The amount of slag discharged is related to the boiler capacity, coal type and combustion method.

[0003] Disadvantages of existing boiler slag removal system:

[0004] 1. The existing boiler slag discharge system has poor internal sealing to avoid safety hazards caused by excessive internal pressure;

[0005] 2. The existing boiler slag removal system cannot automatically adjust the slag removal efficiency according to the amount of residue generated. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a boiler slag discharge system with a flexible double-tube sealing structure, thereby effectively solving the shortcomings of the prior art.

[0007] The objective of the present invention is achieved through the following technical scheme: a boiler slag discharge system with a flexible double-sleeve sealing structure comprises a furnace bottom, one side of the bottom of the furnace bottom is rotatably connected to a rotating shaft, the furnace bottom is rotatably connected to a movable plate through the rotating shaft, the bottom of the other side of the furnace bottom is movably connected to an induction switch, the outer side of the top of the induction switch is fixedly connected to a limit plate, and the induction switch is sleeved with a compression spring through the limit plate.

[0008] Optionally, the bottom of one side of the furnace bottom is arc-shaped, and the curved surface on one side of the arc of the furnace bottom is always in contact with the end of the movable plate when it rotates, and the width of the movable plate is matched with the inner wall width of the furnace bottom. Both ends of the rotating shaft are sleeved with torsion springs, and the torsion force of the torsion spring causes the movable plate to rotate away from the furnace bottom. The compression spring and the torsion spring are used to lift the movable plate to keep it tilted. Under the action of the inclined surface, the slag automatically tilts to the side of the outlet to complete the discharge.

[0009] Optionally, mounting plates are fixedly connected to both sides of the top of the movable plate, a rotating rod is rotatably connected between the mounting plates, a plurality of stirring rods are fixedly connected to the rotating rod, and a plurality of motors are fixedly connected to the inner wall of the mounting plate on one side, and the motors are respectively fixedly connected to the rotating rods. When a lot of slag is accumulated on the movable plate, the motor drives the rotating rod to rotate, so that the stirring rods rotate toward the discharge port, thereby accelerating the discharge of the waste slag on the movable plate to the outside, and avoiding the situation where waste slag accumulates in the furnace bottom and the discharge is not timely.

[0010] Optionally, the induction switch is electrically connected to the motor, and when the induction switch is pressed and closed, an operating instruction is sent to the motor. A frequency converter is provided at the input end of the motor, and the frequency converter is used to receive the operating instruction of the induction switch and start the motor. When the gravity of the slag on the movable plate can overcome the combined force of the torsion spring and the compression spring to press the induction switch downward, the motor is started to drive the rotating rod and the stirring rod to rotate to accelerate the slag discharge speed of the slag accumulated at the bottom of the furnace, so that the device automatically controls whether the rotating rod rotates according to the amount of slag at the bottom of the furnace. When the slag is less, the rotating rod is no longer rotated, thereby reducing the energy consumption of the slag discharge system.

[0011] Optionally, a discharge port is provided on one side of the furnace bottom, and slide grooves are provided on both sides above the discharge port. The furnace bottom is slidably connected to a closing plate through the slide groove, and a seesaw is fixedly connected to both sides of the rotating shaft. The length of the seesaw is greater than the distance from the rotating rod to the discharge port. When the movable plate is tilted at different angles under the action of the gravity of the slag, when there is no slag on the movable plate, the movable plate is tilted at the highest point and the seesaw is at the lowest point, and the closing plate closes the discharge port. When there is more waste slag on the movable plate, the movable plate is pressed downward, and the seesaw on the other side is rotated upward to tilt the closing plate, so that the size of the discharge port can be automatically adjusted according to the amount of slag, and the discharge port is automatically closed when the slag is cleaned.

[0012] Optionally, the width of the closing plate is adapted to the width of the discharge port, the height of the closing plate is greater than the height of the discharge port, and bevel grooves are provided at the bottoms on both sides of the discharge port, the inclined surface and position of the bevel grooves are adapted to the inclined angle and position of the rocker, and when the movable plate is fully tilted, the rocker is received in the bevel groove to prevent the discharge port from being unable to be completely closed.

[0013] Optionally, two constant pressure ports are opened on one side of the middle part of the furnace bottom, and the outer side of the constant pressure port is wrapped with a closed sleeve. The closed sleeve is made of silicone. The constant pressure port is closed by the closed sleeve to avoid heat loss when the boiler is running. When the internal pressure is too high, the pressure can reopen the closed sleeve to reduce the pressure, thereby ensuring the filtering sealing while reducing safety hazards.

[0014] The present invention has the following advantages:

[0015] 1. The boiler slag discharge system with a flexible double-tube sealing structure uses compression springs and torsion springs to lift the movable plate to keep it tilted. Under the action of the inclined surface, the slag automatically tilts to the outlet side to complete the discharge. When there is a lot of slag accumulated on the movable plate, the motor drives the rotating rod to rotate, so that the stirring rod rotates toward the discharge port, and the waste slag on the movable plate is discharged outward faster to avoid the waste slag accumulation in the furnace bottom and the untimely discharge. The frequency converter receives the operation command of the induction switch and starts the motor. When the gravity of the waste slag on the movable plate can overcome the combined force of the torsion spring and the compression spring to press the induction switch downward, the motor is started to drive the rotating rod and the stirring rod to rotate to accelerate the slag discharge speed of the waste slag accumulated at the furnace bottom. The device automatically controls whether the rotating rod rotates according to the amount of slag at the bottom of the furnace. When there is less slag, the rotating rod will no longer rotate, thereby reducing the energy consumption of the slag discharge system. The movable plate will tilt at different angles under the action of the gravity of the slag. When there is no slag on the movable plate, the movable plate is tilted at the highest point, the seesaw is at the lowest point, and the closing plate closes the discharge port. When there is more slag on the movable plate, the movable plate is pressed downward, and the seesaw on the other side is rotated upward to tilt the closing plate, so that the size of the discharge port can be automatically adjusted according to the amount of slag. When the slag is cleaned, the discharge port is automatically closed. When the movable plate is fully tilted, the seesaw is stored in the inclined groove to prevent it from causing the discharge port to be unable to be completely closed.

[0016] 2. The boiler slag discharge system with a flexible double-sleeve sealing structure uses a closed sleeve to seal the constant pressure port to avoid heat loss when the boiler is running. When the internal pressure is too high, the pressure can reopen the closed sleeve to reduce the pressure, thereby ensuring the filtration sealing while reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the mounting plate of the present invention;

[0019] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0020] Figure 4 For the present invention Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the movable plate of the present invention;

[0022] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at C in the middle;

[0023] Figure 7For the present invention Figure 5 Schematic diagram of the enlarged structure at D in the middle.

[0024] In the figure: 1-furnace bottom, 2-rotating shaft, 3-movable plate, 4-induction switch, 5-compression spring, 6-torsion spring, 7-mounting plate, 8-rotating rod, 9-stirring stick, 10-motor, 11-discharging port, 12-chute, 13-closing plate, 14-rocker, 15-inclined groove, 16-constant pressure port, 17-closing sleeve. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0026] like Figures 1 to 7 As shown, a boiler slag discharge system with a flexible double-tube sealing structure includes a furnace bottom 1, one side of the bottom of the furnace bottom 1 is rotatably connected to a rotating shaft 2, the furnace bottom 1 is rotatably connected to a movable plate 3 through the rotating shaft 2, the bottom of the other side of the furnace bottom 1 is movably connected to an induction switch 4, the outer side of the top of the induction switch 4 is fixedly connected to a limit plate, and the induction switch 4 is sleeved with a compression spring 5 through the limit plate.

[0027] As an optional technical solution of the present invention: the bottom of one side of the furnace bottom 1 is arc-shaped, and the curved surface on one side of the arc of the furnace bottom 1 is always in contact with the end of the movable plate 3 when it rotates. The width of the movable plate 3 is adapted to the inner wall width of the furnace bottom 1. Both ends of the rotating shaft 2 are sleeved with torsion springs 6. The torsion force of the torsion spring 6 causes the movable plate 3 to rotate away from the furnace bottom 1. The compression spring 5 and the torsion spring 6 are used to lift the movable plate 3 to keep it tilted. Under the action of the inclined surface, the slag automatically tilts to the outlet side to complete the discharge.

[0028] As an optional technical solution of the present invention: both sides of the top of the movable plate 3 are fixedly connected with mounting plates 7, a rotating rod 8 is rotatably connected between the mounting plates 7, a plurality of stirring rods 9 are fixedly connected to the rotating rod 8, and a plurality of motors 10 are fixedly connected to the inner wall of the mounting plate 7 on one side, and the motors 10 are respectively fixedly connected to the rotating rod 8. When a lot of slag is accumulated on the movable plate 3, the motor 10 drives the rotating rod 8 to rotate, so that the stirring rod 9 rotates toward the discharge port, thereby accelerating the discharge of the waste slag on the movable plate 3 to the outside, and avoiding the situation where the waste slag accumulates in the furnace bottom 1 and the discharge is not timely.

[0029] As an optional technical solution of the present invention: the induction switch 4 is electrically connected to the motor 10, and when the induction switch 4 is pressed and closed, an operation instruction is sent to the motor 10. The input end of the motor 10 is provided with a frequency converter, and the frequency converter is used to receive the operation instruction of the induction switch 4 and start the motor 10. When the gravity of the waste slag on the movable plate 3 can overcome the combined force of the torsion spring 6 and the compression spring 5 to press the induction switch 4 downward, the motor 10 is started to drive the rotating rod 8 and the stirring rod 9 to rotate to accelerate the slag discharge speed of the waste slag accumulated at the bottom of the furnace 1, so that the device automatically controls whether the rotating rod 8 rotates according to the amount of waste slag at the bottom of the furnace, and when the waste slag is less, the rotating rod 8 is no longer rotated, thereby reducing the energy consumption of the slag discharge system.

[0030] As an optional technical solution of the present invention: a discharge port 11 is provided on one side of the furnace bottom 1, and slide grooves 12 are provided on both sides above the discharge port 11. The furnace bottom 1 is slidably connected to a closing plate 13 through the slide groove 12, and both sides of the rotating shaft 2 are fixedly connected to a seesaw 14. The length of the seesaw 14 is greater than the distance from the rotating rod 8 to the discharge port 11. When the movable plate 3 is tilted at different angles under the action of the gravity of the slag, when there is no slag on the movable plate 3, the movable plate 3 is tilted at the highest point, and the seesaw 14 is at the lowest point, and the closing plate 13 closes the discharge port 11. When there is more waste slag on the movable plate 3, the movable plate 3 is pressed downward, and the seesaw 14 on the other side is rotated upward to tilt the closing plate 13, so that the size of the discharge port 11 can be automatically adjusted according to the amount of slag, and the discharge port 11 is automatically closed when the slag is cleaned.

[0031] As an optional technical solution of the present invention: the width of the closing plate 13 is adapted to the width of the discharge port 11, the height of the closing plate 13 is greater than the height of the discharge port 11, and inclined grooves 15 are provided at the bottoms of both sides of the discharge port 11. The inclined surface and position of the inclined grooves 15 are adapted to the inclined angle and position of the seesaw 14. When the movable plate 3 is fully tilted, the seesaw 14 is received in the inclined grooves 15 to prevent the discharge port 11 from being unable to be completely closed.

[0032] As an optional technical solution of the present invention: two constant pressure ports 16 are opened on one side of the middle part of the furnace bottom 1, and the outer side of the constant pressure port 16 is wrapped with a closed sleeve 17. The material of the closed sleeve 17 is silicone. The constant pressure port 16 is closed by the closed sleeve 17 to avoid heat loss when the boiler is running. When the internal pressure is too high, the pressure can reopen the closed sleeve 17 to reduce the pressure, thereby ensuring the filtering sealing while reducing safety hazards.

[0033] The working process of the present invention is as follows:

[0034] S1. When there is a lot of waste slag at the bottom of the furnace, the induction switch 4 is triggered to start the motor 10 so that the rotating rod 8 drives the stirring rod 9 to rotate to speed up the slag discharge;

[0035] S2, the seesaw 14 lifts or lowers the closing plate 13 according to the rotation of the movable plate 3 to adjust the size of the discharge port 11.

[0036] In summary, the boiler slag discharge system with a flexible double-tube sealing structure uses compression springs 5 ​​and torsion springs 6 to lift the movable plate 3 to keep it tilted. Under the action of the inclined surface, the slag automatically tilts to the side of the outlet to complete the discharge. When there is a lot of slag accumulated on the movable plate 3, the motor 10 drives the rotating rod 8 to rotate, so that the stirring rod 9 rotates toward the discharge port, and the waste slag on the movable plate 3 is discharged outwardly to avoid the situation where the waste slag in the furnace bottom 1 is accumulated and discharged in time. The frequency converter is used to receive the operation command of the induction switch 4 and start the motor 10. When the gravity of the waste slag on the movable plate 3 can overcome the combined force of the torsion spring 6 and the compression spring 5 to press the induction switch 4 downward, the motor 10 is started to drive the rotating rod 8 and the stirring rod 9 to rotate to accelerate the slag discharge speed of the waste slag accumulated on the furnace bottom 1, so that the device automatically controls whether the rotating rod 8 rotates according to the amount of waste slag at the furnace bottom, and stops rotating when the waste slag is less. The movable rod 8 can reduce the energy consumption of the slag discharge system. When the movable plate 3 is tilted at different angles under the action of the gravity of the slag, when there is no slag on the movable plate 3, the movable plate 3 is tilted at the highest point, and the seesaw 14 is at the lowest point. The closing plate 13 closes the discharge port 11. When there is more waste slag on the movable plate 3, the movable plate 3 is pressed downward, and the seesaw 14 on the other side is rotated upward to tilt the closing plate 13, so that the size of the discharge port 11 can be automatically adjusted according to the amount of slag. When the slag is cleaned, the discharge port 11 is automatically closed. When the movable plate 3 is completely tilted, the seesaw 14 is stored in the inclined groove 15 to prevent it from causing the discharge port 11 to be unable to be completely closed. The constant pressure port 16 is closed by the closing sleeve 17 to avoid heat loss during boiler operation. When the internal pressure is too high, the pressure can reopen the closing sleeve 17 to reduce the pressure, thereby ensuring the filtration sealing while reducing safety hazards.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A boiler slag removal system with a flexible double-tube sealing structure, characterized in that: The invention comprises a furnace bottom (1), wherein one side of the bottom of the furnace bottom (1) is rotatably connected to a rotating shaft (2), the furnace bottom (1) is rotatably connected to a movable plate (3) via the rotating shaft (2), the bottom of the other side of the furnace bottom (1) is movably connected to an induction switch (4), the outer side of the top of the induction switch (4) is fixedly connected to a limit plate, the induction switch (4) is sleeved with a compression spring (5) via the limit plate, both sides of the top of the movable plate (3) are fixedly connected to mounting plates (7), a rotating rod (8) is rotatably connected between the mounting plates (7), a plurality of stirring rods (9) are fixedly connected to the rotating rod (8), a plurality of motors (10) are fixedly connected to the inner wall of the mounting plate (7) on one side, the motors (10) are respectively fixedly connected to the rotating rods (8), the induction switch (4) is electrically connected to the motor (10), and when the induction switch (4) is pressed and closed, it sends an operation instruction to the motor (10), and the input end of the motor (10) is provided with a frequency converter.

2. The boiler slag removal system with a flexible double-tube sealing structure according to claim 1 is characterized in that: The bottom of one side of the furnace bottom (1) is in an arc shape, and the curved surface of the arc side of the furnace bottom (1) is always in contact with the end of the movable plate (3) when it rotates. The width of the movable plate (3) is matched with the width of the inner wall of the furnace bottom (1). Both ends of the rotating shaft (2) are sleeved with torsion springs (6), and the torsion of the torsion springs (6) causes the movable plate (3) to rotate in a direction away from the furnace bottom (1).

3. The boiler slag removal system with a flexible double-tube sealing structure according to claim 1 is characterized in that: A discharge port (11) is provided on one side of the furnace bottom (1), and slide grooves (12) are provided on both sides above the discharge port (11). The furnace bottom (1) is slidably connected to a closing plate (13) via the slide grooves (12), and a seesaw (14) is fixedly connected to both sides of the rotating shaft (2), and the length of the seesaw (14) is greater than the distance from the rotating rod (8) to the discharge port (11).

4. The boiler slag removal system with a flexible double-tube sealing structure according to claim 3 is characterized in that: The width of the closing plate (13) matches the width of the discharge port (11), the height of the closing plate (13) is greater than the height of the discharge port (11), and the bottoms of both sides of the discharge port (11) are provided with inclined grooves (15), and the inclined surface and position of the inclined grooves (15) match the inclined angle and position of the seesaw (14).

5. The boiler slag removal system with a flexible double-tube sealing structure according to claim 1 is characterized in that: Two constant pressure ports (16) are provided on one side of the middle of the furnace bottom (1), and the outer side of the constant pressure port (16) is wrapped with a closed sleeve (17), and the closed sleeve (17) is made of silica gel.

6. The boiler slag removal system with a flexible double-tube sealing structure according to claim 2 is characterized in that: The compression spring (5) and the torsion spring (6) lift the movable plate (3) to keep it tilted. When the gravity of the waste slag on the movable plate (3) can overcome the combined force of the torsion spring (6) and the compression spring (5) to press the induction switch (4) downward, the motor (10) is started to drive the rotating rod (8) and the stirring rod (9) to rotate, thereby accelerating the slag discharge speed of the waste slag accumulated at the furnace bottom (1).

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