Dustproof and dust-removing auxiliary equipment for boiler cinder outlet

Abstract

The present application relates to the technical field of dust prevention for slag outlet, and discloses a dust prevention and removal auxiliary equipment for boiler slag outlet, which comprises a separation cylinder, an inertia dust suppression assembly is arranged in the separation cylinder, the inertia dust suppression assembly comprises a plurality of inertia pre-separation plates connected to the inside of the separation cylinder, when the mixed slag block contacts the inertia pre-separation plate, the slag block rebounds and falls under the action of inertia, and the dust attached to the surface of the slag block flies due to the impact, since the inertia pre-separation plates are arranged in a spiral shape, the slag block and the dust are guided on the plate surface to form preliminary separation, then, the dust airflow forms a certain rotational flow under the centrifugal action of the spiral turbulent guide plate, and is thrown into the dust collection bin along the spiral gap, while the external fan two continuously absorbs dust through the spiral gap to realize efficient dust removal, in addition, the slag block is also subjected to a certain crushing action in the collision process with the inertia pre-separation plate, thereby further reducing the amount of dust attached to the surface of the slag block.

Description

Technical Field

[0001] This invention relates to the field of dust prevention technology for slag outlets, specifically to an auxiliary device for dust prevention and removal at boiler slag outlets. Background Technology

[0002] This dust removal auxiliary equipment, specifically designed for boiler slag outlets, significantly reduces dust emissions and improves the cleanliness of the working environment through efficient filtration and negative pressure suction.

[0003] However, existing dust removal auxiliary equipment for slag outlets still has some problems: the existing technology mainly relies on negative pressure suction to absorb dust, but this method has obvious limitations. During the falling process of slag blocks, the dust attached to their surface cannot be completely removed. Negative pressure suction can only absorb a portion of the dust, and the dust on the surface of the slag blocks will still release a large amount of dust due to collision and friction after entering the slag hopper. This incomplete dust removal effect leads to the continuous generation of dust inside the slag hopper, which not only reduces the dust removal efficiency, but may also cause secondary pollution to the working environment.

[0004] Moreover, during the dust removal process, dust easily adheres to the inside of the equipment, especially the inner wall of the pipes. Over time, this adhered dust will gradually accumulate and form a hard layer. The formation of the layer not only reduces the filtration efficiency of the equipment, but also increases the difficulty of equipment maintenance.

[0005] Finally, existing equipment collects dust in specific containers or filtration devices, but secondary scattering can easily occur when cleaning or removing this dust. Because dust particles are small and lightweight, any slight disturbance can cause them to fly up again and re-pollute the working environment. This secondary scattering problem not only weakens the dust removal effect of the equipment, but may also threaten the health of operators, especially when they are exposed to high concentrations of dust for a long time.

[0006] Therefore, this invention proposes an auxiliary device for dust prevention and removal at the boiler slag outlet. Summary of the Invention

[0007] The purpose of this invention is to provide a dust prevention and removal auxiliary device for boiler slag outlets to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary device for dust prevention and removal at a boiler slag outlet. This auxiliary device, used at the slag outlet, includes a separation cylinder. An inertial dust suppression component is installed inside the separation cylinder. The inertial dust suppression component includes several inertial pre-separation plates connected inside the separation cylinder. A spiral turbulence guide plate is fixedly connected to the inner wall of the separation cylinder. Several spiral slits are formed through the inner wall of the separation cylinder. Several gravity flaps are installed in the inner cavity of the separation cylinder. The bottom side of the inner cavity of the inertial pre-separation plate is designed to gradually contract. An air curtain partition plate is installed on the contracted section of the inertial pre-separation plate. The air curtain partition plate is connected to an external fan. A dust collection chamber communicating with the spiral slits is installed outside the separation cylinder. An external fan is installed inside the dust collection chamber.

[0009] When the mixed slag blocks impact the inertial pre-separation plate, the slag blocks rebound and fall due to inertia, while the dust airflow is swirled by the centrifugal force of the spiral turbulence guide plate and is thrown into the dust collection bin along the spiral gap. At the same time, the impact force of the slag blocks triggers the gravity flap to open, and the air curtain isolation plate simultaneously forms a dynamic annular airflow barrier at the bottom of the flap to block the spread of dust.

[0010] When the gravity flap closes, an air curtain covers the gap at the bottom of the gravity flap to achieve a seal.

[0011] When the gravity flap is activated, the air curtain is passively adjusted to spray upwards at an angle, blowing the residual dust back to the spiral turbulence guide plate area, and using centrifugal force to enhance dust collection for a second time.

[0012] Preferably, the inertial pre-separation plates are all inclined downwards, and a number of inertial pre-separation plates are arranged in a spiral shape, and a number of holes are opened on the surface of each inertial pre-separation plate.

[0013] Preferably, the spiral gaps are all located between the gaps of the spiral deflector plate and are arranged in a spiral shape. The top and bottom of the spiral deflector plate are respectively equipped with a convex plate, which is used to prevent dust from falling into the top of the spiral deflector plate and the bottom of the gravity flap.

[0014] Preferably, the outer edge of the air curtain partition plate is provided with a plurality of pressure blocks, each pressure block is slidably connected to the bottom of the inner cavity of the separation cylinder, and each pressure block is fixedly connected to the inner wall of the separation cylinder with a spring.

[0015] Preferably, the top of the air curtain partition plate is provided with a narrow angle that expands outward, and the narrow angle is adapted to the angle of the constriction section of the separation cylinder.

[0016] Preferably, the gravity flap is hinged to the inner wall of the separation cylinder, and a torsion spring is fixedly connected between the hinge and the inner wall of the separation cylinder. Each pair of adjacent surfaces of the gravity flap is provided with magnetism, and the magnetism is opposite.

[0017] Preferably, the dust collection chamber includes an annular cavity and a movable cavity. The annular cavity is fixedly connected to the outer surface of the separation cylinder, and the movable cavity is fixedly connected to the outer surface of the annular cavity and is inclined downward.

[0018] Preferably, the dust collection chamber is equipped with an extrusion molding assembly, which includes an extrusion chamber fixedly connected to the bottom of the movable cavity. Extrusion blocks are symmetrically slidably connected inside the extrusion chamber. Rotating plates are symmetrically hinged to the inner wall of the extrusion chamber. A spring is fixedly connected between the outer surface of each rotating plate and the inner wall of the extrusion chamber. A double-ended reciprocating screw is rotatably connected to the inner wall of the extrusion chamber. The extrusion blocks are threadedly connected to the double-ended reciprocating screw, and the two sides of the double-ended reciprocating screw have opposite thread directions.

[0019] Preferably, the double-headed reciprocating screw is installed with an external motor, a detector is installed inside the extrusion chamber, the detector is electrically connected to an external power supply, and the signal output terminal of the detector is electrically connected to the control terminal of the external motor.

[0020] Preferably, a number of teeth are fixedly connected to the side of the rotating plate away from the center of the extrusion chamber, and gears are fixedly connected to the hinge joint between the rotating plate and the extrusion chamber, with the gears meshing with the teeth.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the mixed slag blocks come into contact with the inertial pre-separation plate, the slag blocks rebound and fall under the action of inertia. At the same time, the dust attached to their surface is thrown into the air due to the impact. Since the inertial pre-separation plate is arranged in a spiral shape, the slag blocks and dust are guided on the plate surface, forming a preliminary separation. Subsequently, the dust airflow forms a certain vortex under the centrifugal action of the spiral turbulence guide plate and is thrown into the dust collection bin along the spiral gap. The external fan 2 continuously absorbs dust through the spiral gap, achieving efficient dust removal. In addition, the slag blocks are also subjected to a certain crushing effect during the collision with the inertial pre-separation plate, which further reduces the amount of dust attached to the surface of the slag blocks and improves the dust removal efficiency.

[0022] 2. When the gravity flap is closed, the air curtain partition plate generates a local high-pressure field to prevent dust from statically penetrating through the gaps in the gravity flap. When the gravity flap is open, the air curtain partition plate guides the residual dust to the upper part and is reabsorbed by the external fan, further improving the dust removal efficiency and reducing the accumulation of dust inside the equipment.

[0023] 3. The combined design of the spiral baffle and the spiral gap allows airflow to penetrate into the dust collection chamber from the spiral gap, forming an air knife effect. This continuous airflow not only prevents dust from accumulating in the gap, but also further enhances the dust removal effect.

[0024] 4. By guiding the slag and dust into a spiral motion, the dust is efficiently separated and collected under the combined action of centrifugal force and negative pressure. This design not only improves the dust removal effect but also reduces the power requirement of the external fan, achieving energy-saving operation.

[0025] 5. The gravity flap achieves a dynamic sealing function. When the slag block falls, its impact triggers the gravity flap to open, allowing the slag block to pass through. When no slag block falls, the gravity flap automatically closes under the action of the torsion spring, forming a seal and effectively preventing dust from leaking from the bottom gap.

[0026] 6. The dust accumulation in the dust collection chamber is monitored in real time by the detector. When the set threshold is reached, the detector triggers the external motor to start, which drives the double-headed reciprocating screw to move the two extrusion blocks synchronously towards the center of the extrusion chamber, and forcefully extrudes the dust to solidify it into a block shape. This extrusion molding technology effectively reduces dust dispersion and avoids secondary dispersion problems. At the same time, it makes the dust easier to collect and process, significantly improving the dust removal effect and operational safety of the equipment.

[0027] 7. During the extrusion process, the rotating plate rotates under the action of the extrusion block. The teeth on its outer surface mesh with the gears, further driving the rotating plate to rotate. When the dust is extruded into blocks, the rotation of the rotating plate causes the formed dust blocks to fall automatically, realizing the automatic emission function without human intervention.

[0028] 8. The application of extrusion molding components effectively reduces dust accumulation inside the extrusion chamber, preventing long-term dust buildup inside the equipment. At the same time, because the dust is solidified into blocks, cleaning becomes simpler and more efficient, reducing the difficulty of equipment maintenance and the intensity of cleaning work. Attached Figure Description

[0029] Figure 1 This is a frontal perspective three-dimensional schematic diagram of the main structure of the present invention.

[0030] Figure 2 This is a three-dimensional cross-sectional view of the main structure of the present invention.

[0031] Figure 3 For the present invention Figure 2 Enlarged 3D schematic diagram of the structure at point A.

[0032] Figure 4 For the present invention Figure 2 Enlarged 3D schematic diagram of the structure at point B.

[0033] Figure 5 This is a three-dimensional schematic diagram of the separation cylinder of the present invention.

[0034] Figure 6 This is a partial three-dimensional schematic diagram of the gravity flap of the present invention.

[0035] Figure 7 This is a cross-sectional perspective view of the extrusion molding component of the present invention.

[0036] Figure 8 For the present invention Figure 7 Enlarged 3D schematic diagram of the structure at point C.

[0037] Figure 9 This is a three-dimensional cross-sectional view of the double-headed reciprocating lead screw of the present invention.

[0038] Figure 10 This is a partial cross-sectional perspective view of the extrusion molding component of the present invention.

[0039] In the diagram: 11. Separation cylinder.

[0040] 2. Inertial dust suppression assembly; 21. Inertial pre-separation plate; 22. Spiral turbulence guide plate; 23. Spiral gap; 24. Dust collection bin; 25. Gravity flap; 26. Air curtain partition plate; 27. Pressure block; 28. Spring 1.

[0041] 3. Extrusion molding assembly; 31. Extrusion chamber; 32. Extrusion block; 33. Rotating plate; 34. Spring II; 35. Tooth; 36. Gear; 37. Double-ended reciprocating screw. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0043] It should be noted that the two external fans only provide the function of negative pressure dust suction, while the one external fan provides the airflow function for the air curtain partition plate 26. The detector only provides the function of detecting the amount of dust. The working principle and specific structure of the above structure are existing technologies. Therefore, given the universality of the above structure, its specific principle will not be described in detail below.

[0044] Example 1, please refer to as follows Figures 1 to 6As shown, a dust suppression auxiliary device for boiler slag outlet is provided. This auxiliary device is used on the slag outlet and includes a separation cylinder 11 installed below the slag outlet. A slag hopper is also provided at the bottom of the separation cylinder 11. An inertial dust suppression component 2 is provided inside the separation cylinder 11. The inertial dust suppression component 2 includes several inertial pre-separation plates 21 connected inside the separation cylinder 11. A spiral turbulence guide plate 22 is fixedly connected to the inner wall of the separation cylinder 11. Several spiral slits 23 are opened through the inner wall of the separation cylinder 11. Several gravity flaps 25 are installed in the inner cavity of the separation cylinder 11. The bottom side of the inner cavity of the inertial pre-separation plate 21 is set in a gradually contracting shape. An air curtain partition plate 26 is installed on the contracting section of the inertial pre-separation plate 21. The air curtain partition plate 26 is connected to an external fan. A dust collection bin 24 connected to the spiral slits 23 is installed outside the separation cylinder 11. An external fan is provided inside the dust collection bin 24.

[0045] When the mixed slag blocks impact the inertial pre-separation plate 21, the slag blocks rebound and fall due to inertia, while the dust airflow is swirled by the centrifugal force of the spiral turbulence guide plate 22 and is thrown into the dust collection chamber 24 along the spiral gap 23. At the same time, the impact force of the slag blocks triggers the gravity flap 25 to open, and the air curtain isolation plate 26 simultaneously forms a dynamic annular airflow barrier at the bottom of the flap to block the spread of dust.

[0046] When the gravity flap 25 is closed, the air curtain covers the bottom gap of the gravity flap 25 to achieve a seal.

[0047] When the gravity flap 25 is activated, the air curtain is passively adjusted to spray upwards at an angle, blowing the residual dust back to the spiral turbulence guide plate 22 area, and using centrifugal force to enhance dust collection for a second time.

[0048] It should be noted that the inertial pre-separation plates 21 are all inclined downwards, and several inertial pre-separation plates 21 are arranged in a spiral shape. Several holes are opened on the surface of each inertial pre-separation plate 21. The spiral gaps 23 are all located between the gaps of the spiral turbulence guide plates 22 and are arranged in a spiral shape. Protruding plates are installed at the top and bottom of the spiral turbulence guide plates 22, respectively. The protruding plates are used to prevent dust from falling into the top of the spiral turbulence guide plates 22 and the bottom of the gravity flap 25. Several pressure blocks 27 are provided on the outer edge of the air curtain partition plate 26. Each pressure block 27 is slidably connected to the bottom of the inner cavity of the separation cylinder 11. Each pressure block 27 is fixedly connected to the inner wall of the separation cylinder 11 by a spring 28. The top of the air curtain partition plate 26 is provided with a narrow angle that expands outward, and the angle of the narrow angle is adapted to the angle of the contraction section of the separation cylinder 11. The gravity flap 25 is hinged to the inner wall of the separation cylinder 11, and a torsion spring is fixedly connected between the hinge and the inner wall of the separation cylinder 11. Each pair of adjacent surfaces of the gravity flap 25 is provided with magnetism, and the magnetism is opposite. The dust collection chamber 24 includes an annular cavity and a moving cavity. The annular cavity is fixedly connected to the outer surface of the separation cylinder 11, and the moving cavity is fixedly connected to the outer surface of the annular cavity and is inclined downward.

[0049] Specifically, the operator first connects the separator 11 to the slag outlet of the boiler, and then starts external fan one and external fan two. During this process, external fan one fills the air curtain partition plate 26 with airflow, while external fan two creates negative pressure in the dust collection bin 24 to attract dust.

[0050] When the mixed slag blocks fall from the boiler slag outlet, they first come into contact with the inertial pre-separation plate 21. Since the inertial pre-separation plate 21 is arranged in a spiral shape and tilted downwards, the slag blocks rebound due to inertia during the impact and continue to fall along the spiral trajectory. During this process, the dust on the surface of the slag blocks is thrown up by the impact and initially separated from the slag blocks. At the same time, the inclined design and surface hole structure of the inertial pre-separation plate 21 further enhance the crushing effect of the slag blocks, making it easier for the dust attached to the surface of the slag blocks to be removed, providing favorable conditions for subsequent dust removal.

[0051] Subsequently, the flying dust forms a certain vortex under the guidance of the spiral turbulence guide plate 22, and moves towards the inner wall of the separation cylinder 11 under the action of centrifugal force. The spiral arrangement of the spiral turbulence guide plate 22 and the centrifugal action cause the dust airflow to be thrown into the dust collection chamber 24 along the spiral gap 23.

[0052] External fan 2 continuously generates negative pressure through spiral slit 23, which efficiently draws dust into dust collection chamber 24. At the same time, when the airflow penetrates into dust collection chamber 24 from spiral slit 23, it forms an air knife effect, which continuously blows the inner wall of spiral slit 23 to prevent dust from accumulating in the slits and ensures the continuity and stability of the dust removal process.

[0053] Meanwhile, the slag block continues to fall under the guidance of the inertial pre-separation plate 21 and the spiral turbulence guide plate 22, and finally hits the gravity flap 25. The gravity flap 25 is forced to rotate under the impact of the slag block, allowing the slag block to pass through, while the torsion spring is tightened.

[0054] It should be noted that, since the narrow corner at the top of the air curtain partition plate 26 is blocked by the pressure block 27, the airflow generated by the external fan accumulates inside and generates thrust, pushing the pressure block 27 away. At this time, the airflow is ejected along the inclined surface of the narrow corner, and the airflow forms a dynamic annular airflow barrier at the bottom of the gravity flap 25, blocking dust from statically penetrating through the gaps of the gravity flap 25. In addition, the contraction structure at the bottom of the inner cavity of the separation cylinder 11, combined with the expansion characteristics of the airflow, according to Bernoulli's principle, the airflow velocity decreases while the pressure increases, forming a local high-pressure field, which further enhances the sealing effect of the airflow barrier.

[0055] When the gravity flap 25 is opened, the airflow barrier generated by the air curtain partition plate 26 adjusts the spray angle due to the obstruction of the gravity flap 25, and the airflow blows upward along the surface of the gravity flap 25. During this process, the airflow blows the residual light dust back to the spiral turbulence guide plate 22 area, and uses centrifugal force to throw the dust back into the dust collection bin 24, realizing the secondary recycling of dust.

[0056] Finally, through the combined action of the gravity flap 25 and the air curtain partition plate 26, the slag block passed smoothly under the protection of dynamic sealing and airflow barrier, and finally fell into the slag hopper.

[0057] Example 2, based on Example 1, please refer to the following... Figures 7 to 10 As shown, the dust collection chamber 24 is equipped with an extrusion molding assembly 3. The extrusion molding assembly 3 includes an extrusion chamber 31 fixedly connected to the bottom of the moving cavity. Extrusion blocks 32 are symmetrically slidably connected inside the extrusion chamber 31. Rotating plates 33 are symmetrically hinged on the inner wall of the extrusion chamber 31. A spring 34 is fixedly connected between the outer surface of each rotating plate 33 and the inner wall of the extrusion chamber 31. A double-ended reciprocating screw 37 is rotatably connected to the inner wall of the extrusion chamber 31. The extrusion blocks 32 are all threadedly connected to the double-ended reciprocating screw 37. The two sides of the double-ended reciprocating screw 37 have opposite thread directions. The double-ended reciprocating screw 37 is installed with an external motor.

[0058] It should be noted that a detector is installed inside the extrusion chamber 31. The detector is specifically an ultrasonic sensor. The detector is electrically connected to an external power supply. At the same time, the signal output terminal of the detector is electrically connected to the control terminal of an external motor. Several teeth 35 are fixedly connected to the side of the rotating plate 33 away from the center of the extrusion chamber 31. Gears 36 are fixedly connected to the hinge between the rotating plate 33 and the extrusion chamber 31. The gears 36 and the teeth 35 mesh with each other.

[0059] Specifically, when the dust generated at the boiler slag outlet is sucked into the dust collection chamber 24 by the external fan 2 through the spiral gap 23, the dust gradually settles and enters the bottom of the compression chamber 31 under the natural guidance of the moving chamber.

[0060] The ultrasonic sensor installed inside the extrusion chamber 31 monitors the amount of dust accumulation in real time. The ultrasonic sensor determines the thickness of the dust by emitting ultrasonic waves and detecting the echo time. When the dust accumulation reaches a set threshold, the sensor sends a start signal to the external motor.

[0061] After the external motor starts, it drives the double-ended reciprocating screw 37 to rotate. Since the threads on both sides of the double-ended reciprocating screw 37 are opposite, the rotation drives the extrusion blocks 32 on both sides to move towards the center of the extrusion chamber 31. During the movement, the extrusion blocks 32 apply pressure to the dust at the bottom and gradually extrude it into blocks. This process not only increases the density of the dust but also reduces the volume of the dust, making it easier for subsequent storage and transportation.

[0062] As the extrusion block 32 moves toward the center, its surface contacts the teeth 35 on the rotating plate 33, and the rotating plate 33 is driven to rotate through the meshing action of the gear 36. As the rotating plate 33 rotates, the opening at the bottom of the extrusion chamber 31 gradually opens, providing a channel for the discharge of dust blocks.

[0063] Since the threads on both sides of the double-ended reciprocating screw 37 are in opposite directions, when the extrusion block 32 reaches the center position, the external motor continues to drive the double-ended reciprocating screw 37 to rotate, causing the extrusion block 32 to move in the opposite direction. During the reverse movement of the extrusion block 32, the dust block is discharged from the bottom of the extrusion chamber 31, and the teeth 35 drive the rotating plate 33 to reset again through the gear 36, re-sealing the opening at the bottom of the extrusion chamber 31, preparing for the next dust collection and extrusion.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0065] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust prevention and removal auxiliary device for boiler slag outlet, the auxiliary device being used at the slag outlet, comprising a separation cylinder (11), characterized in that: An inertial dust suppression assembly (2) is installed inside the separation cylinder (11). The inertial dust suppression assembly (2) includes several inertial pre-separation plates (21) connected inside the separation cylinder (11). A spiral turbulence guide plate (22) is fixedly connected to the inner wall of the separation cylinder (11). Several spiral slits (23) are opened through the inner wall of the separation cylinder (11). Several gravity flaps (25) are installed in the inner cavity of the separation cylinder (11). The bottom side of the inner cavity of the inertial pre-separation plate (21) is set in a gradually contracting shape. An air curtain partition plate (26) is installed on the contracting section of the inertial pre-separation plate (21). The air curtain partition plate (26) is connected to an external fan. An external device connected to the spiral slits (23) is installed on the outside of the separation cylinder (11). The dust collection chamber (24) is equipped with an external fan. When the mixed slag block hits the inertial pre-separation plate (21), the slag block rebounds and falls due to inertia. The dust airflow is swirled by the centrifugal force of the spiral turbulence guide plate (22) and is thrown into the dust collection chamber (24) along the spiral gap (23). At the same time, the impact force of the slag block triggers the gravity flap (25) to open. The air curtain isolation plate (26) simultaneously forms a dynamic annular airflow barrier at the bottom of the flap to block the dust diffusion. When the gravity flap (25) is closed, the air curtain covers the bottom gap of the gravity flap (25) to achieve sealing. When the gravity flap (25) is opened, the air curtain is passively adjusted to spray upwards at an angle, blowing the residual dust back to the spiral turbulence guide plate (22) area, and using centrifugal force to strengthen dust collection for the second time. The gravity flap (25) is hinged to the inner wall of the separation cylinder (11), and a torsion spring is fixedly connected between the hinge and the inner wall of the separation cylinder (11). Each pair of adjacent surfaces of the gravity flap (25) is provided with magnetism, and the magnetism is opposite.

2. The auxiliary equipment for dust prevention and removal at the boiler slag outlet according to claim 1, characterized in that: The inertial pre-separation plates (21) are all inclined downwards, and several inertial pre-separation plates (21) are arranged in a spiral shape. Several holes are opened on the surface of each inertial pre-separation plate (21).

3. The auxiliary equipment for dust prevention and removal at the boiler slag outlet according to claim 1, characterized in that: The spiral gaps (23) are all located between the gaps of the spiral turbulence guide plate (22) and are arranged in a spiral shape. The top and bottom of the spiral turbulence guide plate (22) are respectively equipped with a convex plate.

4. The auxiliary equipment for dust prevention and removal at the boiler slag outlet according to claim 1, characterized in that: The outer edge of the air curtain partition plate (26) is provided with a number of pressure blocks (27), each pressure block (27) is slidably connected to the bottom of the inner cavity of the separation cylinder (11), and each pressure block (27) is fixedly connected to the inner wall of the separation cylinder (11) with a spring (28).

5. The auxiliary equipment for dust prevention and removal at the boiler slag outlet according to claim 1, characterized in that: The top of the air curtain partition plate (26) is provided with a narrow angle that expands outward, and the narrow angle is adapted to the angle of the constriction section of the separation cylinder (11).

6. The auxiliary equipment for dust prevention and removal at the boiler slag outlet according to claim 1, characterized in that: The dust collection chamber (24) includes an annular cavity and a movable cavity. The annular cavity is fixedly connected to the outer surface of the separation cylinder (11), and the movable cavity is fixedly connected to the outer surface of the annular cavity and is inclined downward.

7. A dust prevention and removal auxiliary device for boiler slag outlet according to any one of claims 1-6, characterized in that: The dust collection chamber (24) is equipped with an extrusion molding assembly (3). The extrusion molding assembly (3) includes an extrusion chamber (31) fixedly connected to the bottom of the moving cavity. An extrusion block (32) is symmetrically slidably connected inside the extrusion chamber (31). A rotating plate (33) is symmetrically hinged on the inner wall of the extrusion chamber (31). A spring (34) is fixedly connected between the outer surface of each rotating plate (33) and the inner wall of the extrusion chamber (31). A double-ended reciprocating screw (37) is rotatably connected to the inner wall of the extrusion chamber (31). The extrusion blocks (32) are all threadedly connected to the double-ended reciprocating screw (37). The threads on both sides of the double-ended reciprocating screw (37) are in opposite directions.

8. The auxiliary equipment for dust prevention and removal at the boiler slag outlet according to claim 7, characterized in that: The double-headed reciprocating screw (37) is connected to an external motor. A detector is installed inside the extrusion chamber (31). The detector is electrically connected to an external power supply, and the signal output terminal of the detector is electrically connected to the control terminal of the external motor.

9. The auxiliary equipment for dust prevention and removal at the boiler slag outlet according to claim 7, characterized in that: Several teeth (35) are fixedly connected to the side of the rotating plate (33) away from the center of the extrusion chamber (31). Gears (36) are fixedly connected to the hinge of the rotating plate (33) and the extrusion chamber (31). The gears (36) and the teeth (35) mesh with each other.

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