Boiler ash removal device and ash removal method

Abstract

The invention provides a boiler ash removal device and an ash removal method, and aims to solve the technical problem of resource waste easily caused by direct discharge of metal ash in the prior art. The boiler ash removal device comprises a dust removal box, an ash collection box and an arc-shaped flow guide table, a partition plate is arranged in the ash collection box, a first ash collection chamber and a second ash collection chamber are formed in the ash collection box through the partition plate, and a gap is formed between the top of the partition plate and the bottom of the dust removal box; the arc-shaped flow guide table is movably arranged at the opening in the upper end of the second dust collection chamber through a telescopic structure, the arc-shaped flow guide table has a first working state for magnetically adsorbing metal dust and a second working state for demagnetizing, the arc-shaped flow guide table is in the first working state when the opening is closed, and the arc-shaped flow guide table is in the second working state when the arc-shaped flow guide table moves downwards to be separated from the opening. Through the magnetically controllable arc-shaped flow guide table, in the ash removal process, the arc-shaped flow guide table can adsorb metal impurities in dust, metal and non-metal components in ash can be automatically separated, and the resource recovery rate is remarkably increased.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler ash removal, and in particular to a boiler ash removal device and an ash removal method. Background Art

[0002] In industrial fields such as metallurgy and waste incineration, the dust generated by waste heat boilers generally contains metal components such as iron and nickel. When traditional ash removal devices carry out ash discharging work, they generally directly discharge the ash and slag, resulting in waste of resources. If the mixed ash is sorted additionally, the treatment difficulty is relatively large and the cost is also high. For example, a boiler ash removal device disclosed in the publication number CN212537895U can cool the waste gas through spraying, coagulate and sink the furnace ash, and the ash falls into the ash collection box below. Although this device realizes the basic ash removal function by setting up a dust removal box and an ash collection box, it adopts a mixed discharge method and cannot effectively separate the metal and non-metal ash and slag, resulting in waste of metal resources or increasing the difficulty and treatment cost of subsequent sorting processes. Summary of the Invention

[0003] Aiming at the defects existing in the above-mentioned prior art, the present invention provides a boiler ash removal device and an ash removal method to solve the problem that the direct discharge of metal ash and slag easily leads to waste of resources.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A boiler ash removal device includes: a dust removal box; an ash collection box, which is arranged below the dust removal box and communicated with the outlet of the dust removal box; a partition is arranged in the ash collection box, and a first ash collection chamber and a second ash collection chamber are formed in the ash collection box through the partition, and there is a gap between the top of the partition and the bottom of the dust removal box; an arc-shaped diversion platform, which is movably arranged at the upper end opening of the second ash collection chamber through a telescopic structure; wherein, the arc-shaped diversion platform has a first working state of magnetically adsorbing metal dust and a second working state of demagnetization. When the arc-shaped diversion platform closes the opening, it is in the first working state, and when the arc-shaped diversion platform moves down and disengages from the opening, it is in the second working state.

[0006] Through the magnetically controllable arc-shaped diversion platform of the present invention, during the ash removal process, the arc-shaped diversion platform can adsorb metal impurities in the dust, automatically separate the metal and non-metal components in the ash and slag, and significantly improve the resource recovery rate. Moreover, when a coolant is used as the cooling medium, it can effectively prevent metal impurities from entering the liquid circulation system, reduce the water treatment load, and realize the efficient classification and resource utilization of ash and slag.

[0007] Optionally, the arc-shaped diversion platform is an electromagnet or an electromagnet is embedded inside the arc-shaped diversion platform.

[0008] Optionally, the partition plate includes a vertical portion and an inclined portion connected to each other, and the inclined portion is arranged to expand downward from one end of the arc-shaped diversion platform.

[0009] Optionally, a filter plate is further arranged in the ash collection box, the lower end of the partition plate is connected to the upper surface of the filter plate, and the ash collection box is divided into a first ash collection chamber, a second ash collection chamber, and a liquid discharge chamber located below the ash collection chamber by the filter plate and the partition plate.

[0010] Optionally, the boiler ash removal device further includes: a lifting rod connected to the bottom of the arc-shaped diversion platform; a limiting platform arranged below the lifting rod and corresponding to the position of the lifting rod; wherein: in the first working state, the arc-shaped diversion platform is located inside the opening or partially protrudes from the opening under the action of the telescopic structure, the lifting rod and the limiting platform maintain a distance, and the arc-shaped diversion platform is energized to have magnetism; in the second working state, the arc-shaped diversion platform moves downward under the action of the telescopic structure and disengages from the opening, the lifting rod contacts the limiting platform to trigger a power-off signal, and the arc-shaped diversion platform is demagnetized.

[0011] Optionally, a pressure switch is arranged on the limiting platform, the pressure switch and the electromagnetic arc-shaped diversion platform are both electrically connected to the controller, the controller receives the pressure switch signal and controls the opening and closing of the arc-shaped diversion platform, when the lifting rod and the limiting platform maintain a distance, the arc-shaped diversion platform has magnetism, and when the lifting rod contacts the limiting platform, the controller receives the pressure switch signal and controls the arc-shaped diversion platform to be demagnetized.

[0012] Optionally, a convex platform is arranged at the bottom of the arc-shaped diversion platform, a groove is formed in the convex platform, a first contact piece is fixed at the bottom of the groove, a second contact piece is movably arranged above the first contact piece, one side of the second contact piece is connected to the arc-shaped diversion platform through a second spring, and the other side is connected to the lifting rod. The lower end of the lifting rod extends below the convex platform. When the lifting rod and the limiting platform maintain a distance, the second contact piece contacts and conducts with the first contact piece under the action of the second spring to energize the arc-shaped diversion platform to have magnetism. When the lifting rod contacts the limiting platform, the lifting rod compresses the second spring and separates the second contact piece from the first contact piece to cut off the power supply of the arc-shaped diversion platform and demagnetize it.

[0013] Optionally, the telescopic structure includes a plurality of support plates arranged below the arc-shaped diversion platform, and a first spring connected between the support plates and the arc-shaped diversion platform.

[0014] Optionally, the telescopic structure is an electric telescopic rod, the movable end of the electric telescopic rod is connected to the arc-shaped diversion platform, the electric telescopic rod and the electromagnetic arc-shaped diversion platform are both electrically connected to the controller, and the controller controls the electric telescopic rod to drive the arc-shaped diversion platform to switch between the first working state and the second working state.

[0015] Optionally, the boss and the limiting platform adopt magnets that can attract each other.

[0016] Optionally, the limiting platform adopts an electromagnet structure. A pressure sensor is arranged on the inner wall of the partition plate. Both the pressure sensor and the electromagnet limiting platform are electrically connected to a controller. The controller receives the communication data of the pressure sensor and controls the opening and closing of the electromagnet limiting platform. The telescopic structure includes a plurality of support plates arranged below the arc-shaped diversion platform and a first spring connected between the support plates and the arc-shaped diversion platform. When the arc-shaped diversion platform adsorbs metal slag reaching a preset weight, it moves downward under the compression of the first spring, enabling the pressure sensor to detect the contact pressure. The controller receives the pressure signal and controls the electromagnet limiting platform to be energized to have magnetism to generate suction force on the boss. After the arc-shaped diversion platform is powered off and demagnetized to discharge all the metal slag, the electromagnet limiting platform is powered off and demagnetized.

[0017] Optionally, it further includes an ash removal conveying cylinder and a first cooling mechanism arranged on the ash removal conveying cylinder. The inlet of the ash removal conveying cylinder is communicated with the ash discharge pipe of the boiler body, and the outlet is communicated with the inlet of the dust removal box. The first cooling mechanism is used to cool the dust inside the ash removal conveying cylinder.

[0018] Optionally, it further includes a second cooling mechanism for spraying coolant into the dust removal box.

[0019] Optionally, it further includes a third cooling mechanism for spraying coolant into the ash collection box.

[0020] Optionally, the ash removal conveying cylinder is installed on the top of the dust removal box through a support frame, and a spiral conveying mechanism is arranged inside it. The first cooling mechanism includes: a water tank arranged on the outer wall of the ash removal conveying cylinder; a water inlet pipe and a water outlet pipe are arranged on the water tank; one end of the water inlet pipe is communicated with the water tank, and the other end is connected with a treatment pipe for scale prevention treatment. An annular magnet is sleeved on the outer wall of the treatment pipe.

[0021] Optionally, a convex structure is arranged on the inner wall of the treatment pipe.

[0022] Optionally, the convex structure includes several protrusions arranged on the inner wall of the treatment pipe.

[0023] Optionally, several protrusions are arranged in a staggered manner.

[0024] Optionally, the annular magnet adopts an annular neodymium iron boron magnet block.

[0025] Optionally, the second cooling mechanism includes: a first spray head installed on the ash guide hopper plate at the bottom of the dust removal box, with the spraying direction facing the top of the dust removal box; a first cooling water tank connected to the first spray head through a pipeline; a water pump installed on the pipeline; wherein, the water pump extracts the coolant in the first cooling water tank into the first spray head and sprays it out from the first spray head.

[0026] Optionally, the third cooling mechanism includes: a second spray head installed on the side wall or the ash guide hopper plate of the ash collection box, with the spraying direction facing the partition board; a second cooling water tank connected to the second spray head through a pipeline, and a water pump is installed on this pipeline. The water pump extracts the coolant in the second cooling water tank into the second spray head and sprays it out from the second spray head.

[0027] Optionally, the boiler ash removal device further includes a ash scraping mechanism arranged in the dust removal box. The ash scraping mechanism includes: a driving member drivingly connected to a rotating rod rotatably arranged in the dust removal box; a rotating frame connected to the rotating rod; a mounting plate arranged outside the rotating frame, and a brush is arranged on one side of the mounting plate close to the inner wall of the dust removal box; wherein, an installation groove is formed on the rotating frame, and a plurality of hinge rods are hinged between the installation groove and the mounting plate. Each group of hinge rods includes two hinged hinge rods, and a third spring is connected inside the included angle formed by the two hinge rods.

[0028] Optionally, each group of hinge rods forms a V-shaped structure after being hinged by two hinge rods, and the two open ends thereof are respectively hinged to the installation groove and the mounting plate, and the third spring is connected inside the V-shaped included angle.

[0029] Optionally, a plurality of second telescopic rods are arranged at intervals between the mounting plate and the installation groove.

[0030] Optionally, the lower end of the dust removal box is an ash guide hopper with a conical structure, and the ash guide hopper is formed by an inclined ash guide plate. The mounting plate includes a vertical section and an inclined section connected to the bottom end of the vertical section. The vertical section is arranged close to the inner wall of the dust removal box, and the inclined section is adapted to the ash guide plate and arranged close to its surface.

[0031] Optionally, the driving member is a driving motor. The driving motor is installed at the upper end of the dust removal box, and a driving bevel gear is installed at its power output end. One end of the rotating rod is rotatably connected to the bottom wall of the dust removal box, and the other end passes through the top wall of the dust removal box and is installed with a driven bevel gear meshing with the driving bevel gear.

[0032] A boiler ash removal method is realized by the above-mentioned boiler ash removal device. The boiler ash removal method includes the following steps:

[0033] Step S1, discharging the ash and slag generated by the boiler into the dust removal box;

[0034] Step S2, the ash residue enters the ash collection box after passing through the dust removal box. The ash residue entering the ash collection box is separated into metal slag and non-metal dust through the magnetic adsorption of the arc-shaped diversion platform. Among them, the non-metal dust slides down along the arc-shaped diversion platform to the first ash collection chamber. When the adsorbed metal slag reaches the preset weight, the arc-shaped diversion platform moves downward under the action of the telescopic structure and disengages from the opening. The lifting rod contacts the limit platform to trigger the controller, causing the arc-shaped diversion platform to lose power and demagnetize, and the metal slag slides down to the second ash collection chamber;

[0035] Step S3, the ash residue entering the first ash collection chamber and the second ash collection chamber is collected by the movably arranged ash collection box or guided to a designated position for collection through the slag discharge pipe.

[0036] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0037] 1. Through the magnetically controllable arc-shaped diversion platform of the present invention, during the ash removal process, the arc-shaped diversion platform can adsorb metal impurities in the dust, automatically separate the metal and non-metal components in the ash residue, and significantly improve the resource recovery rate.

[0038] 2. When using the coolant as the cooling medium, it can effectively prevent metal impurities from entering the liquid circulation system, reduce the water treatment load, and achieve the efficient classification and resource utilization of the ash residue.

[0039] 3. The arc-shaped diversion platform of the present invention makes the arc-shaped diversion platform automatically move downward after adsorbing a certain amount of metal slag through the telescopic structure. At the same time, in cooperation with the lifting rod and the limit platform, it realizes the automatic power-off and demagnetization of the arc-shaped diversion platform, and realizes the automatic unloading of the metal slag.

[0040] 4. By setting the limit platform as an electromagnetic structure and using it in conjunction with the telescopic structure formed by adding a pressure sensor and a first spring, on the one hand, after the arc-shaped diversion platform adsorbs a certain amount of metal slag, the suction force generated by the limit platform on the protrusion can facilitate the arc-shaped diversion platform to disengage from the opening. On the other hand, after the metal slag on the arc-shaped diversion platform slides to the second ash collection chamber, by powering off and demagnetizing the limit platform, the arc-shaped diversion platform can quickly move upward and reset under the elastic force of the first spring, and the generated jitter during the process can also shake off the residual dust attached to the surface of the arc-shaped diversion platform.

[0041] 5. When the ash scraping mechanism of the present invention is in use, through the setting of the hinge rod group and the third spring, the brush can better contact the inner wall of the dust removal box, so that the cleaning of the inner wall of the dust removal box is more thorough. At the same time, through the hinge rod group and the telescopic rod, the stability of the mounting plate during the movement inside the mounting groove can be increased, and the stability of the device during use can be improved.

[0042] 6. Through the setting of the ash removal conveying cylinder and the first cooling mechanism, the dust can be preliminarily cooled. And before the external cooling water enters the water tank through the treatment pipe, it is softened by the annular magnet, which can avoid the problem of dirt generation on the inner wall of the cooling water tank and realize the function of scale prevention. By setting the convex structure on the inner wall of the treatment pipe, the magnetization path of the water flow can be extended, further improving the scale prevention effect.

[0043] 7. By adding the second cooling mechanism and / or the third cooling mechanism with spraying, the dust can be further cooled, reducing the water consumption while improving the cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0045] Figure 1 It is a schematic structural diagram of an embodiment of the boiler ash removal device in the present invention.

[0046] Figure 2 It is Figure 1 an enlarged view of the structure at A in

[0047] Figure 3 It is Figure 1 an enlarged view of the structure at B in

[0048] Figure 4 It is Figure 1 an enlarged view of the structure at C in

[0049] Figure 5 It is a schematic structural diagram of the arc-shaped diversion platform and the telescopic structure in the present invention.

[0050] Figure 6 It is a schematic structural diagram of the dust removal box and the ash scraping mechanism in the present invention.

[0051] Figure 7 It is a schematic structural diagram of the ash removal conveying cylinder and the first cooling mechanism in the present invention.

[0052] Reference numerals:

[0053] 1. Dust removal box; 1a. Ash guide plate;

[0054] 2. Ash collection box; 2a. First ash collection chamber; 2b. Second ash collection chamber; 2b'. Opening; 2c. Drainage chamber;

[0055] 21. Partition board; 21a. Vertical part; 21b. Inclined part; 22. Filter plate;

[0056] 3. Arc-shaped diversion platform; 31. Boss; 311. Groove; 32. First contact piece; 33. Second contact piece; 34. Second spring;

[0057] 4. Telescopic structure; 41. Support plate; 42. First spring; 43. First telescopic rod;

[0058] 5. Lifting rod; 6. Limiting platform; 7. Pressure sensor;

[0059] 8. Ash scraping mechanism; 81. Driving part; 811. Driving bevel gear; 812. Driven bevel gear; 82. Rotating rod; 83. Rotating frame; 831. Installation groove; 84. Third spring; 85. Installation plate; 86. Brush; 87. Hinge rod; 88. Second telescopic rod;

[0060] 9. Ash removal conveying cylinder; 91. Support frame;

[0061] 10. First cooling mechanism; 101. Water tank; 102. Water inlet pipe; 103. Processing pipe; 1031. Protrusion; 104. Ring magnet;

[0062] 11. Boiler body;

[0063] 12. Second cooling mechanism; 121. First spray head; 122. First cooling water tank; 123. Water pump;

[0064] 13. Third cooling mechanism; 131. Second spray head. Detailed implementation manners

[0065] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the protection scope of the present invention.

[0066] Embodiment 1

[0067] As Figures 1-7 shown, the embodiment of the present invention application provides a boiler ash removal device, including: a dust removal box 1, an ash collection box 2 and an arc-shaped diversion platform 3.

[0068] The ash collection box 2 is arranged below the dust removal box 1 and is communicated with the outlet at the bottom of the dust removal box 1. A partition 21 is arranged in the ash collection box 2. There is a gap between the upper end of the partition 21 and the bottom of the dust removal box 1. A first ash collection chamber 2a and a second ash collection chamber 2b are formed in the ash collection box 2 through the partition 21.

[0069] As an implementation scenario, the partition 21 has a circular or rectangular structure, so that a circular or rectangular second dust collection chamber 2b is formed inside the partition 21, and a first dust collection chamber 2a is formed outside the partition 21. The first dust collection chamber 2a can be a single dust collection chamber 2a connected along the outer circumference of the partition 21, or two dust collection chambers 2a formed on both sides of the partition.

[0070] Through the arrangement of the partition 21, the opening 2b' formed at the upper end of the partition is the feed port of the second dust collection chamber 2b. The arc-shaped diversion platform 3 is movably arranged in the opening 2b' and can open or close the opening 2b', that is: the arc-shaped diversion platform 3 can partially protrude from the opening 2b' or be completely located in the opening 2b', and at this time the arc-shaped diversion platform 3 can close the opening 2b'; the arc-shaped diversion platform 3 can also be located below the opening 2b'. After the arc-shaped diversion platform 3 disengages from the opening 2b', the opening 2b' is in an open state.

[0071] Furthermore, the arc-shaped diversion platform 3 can magnetically adsorb metal objects in the dust. When the arc-shaped diversion platform 3 is energized, it can magnetically adsorb metal dust, and when it is de-energized, it demagnetizes, that is: during use, the arc-shaped diversion platform 3 has a first working state of magnetically adsorbing metal dust and a second working state of demagnetization.

[0072] As an implementation scenario, in this scenario, when the arc-shaped diversion platform 3 closes the opening 2b' (the arc-shaped diversion platform 3 partially protrudes from the opening 2b' or is located in the opening 2b'), it is the initial first working state. At this time, the arc-shaped diversion platform has magnetism to magnetically adsorb metal objects in the dust discharged from the dust removal box 1. When the metal dust on the arc-shaped diversion platform 3 exceeds the preset weight or after the device has been used for a certain period of time, the arc-shaped diversion platform 3 will automatically move downward and disengage from the opening 2b'. At this time, the arc-shaped diversion platform 3 opens the opening 2b' and presents the second working state. In the second working state, the arc-shaped diversion platform 3 demagnetizes, so that the adsorbed metal objects automatically slide down into the second dust collection box 2b after demagnetization. After the metal dust on the arc-shaped diversion platform 3 is discharged, the arc-shaped diversion platform 3 automatically moves upward to return to the initial position and switches to the first working state.

[0073] Optionally, the arc-shaped diversion platform 3 is an electromagnet or the arc-shaped diversion platform 3 is made of a metal material and an electromagnet is embedded inside it.

[0074] Optionally, the partition 21 includes a vertical portion 21a and an inclined portion 21b. The lower end of the vertical portion 21a is connected to the dust collection box 2 or the filter plate, and the upper end is connected to the lower end of the inclined portion 21b. The upper end of the inclined portion 21b is located inside the second dust collection chamber 2b.

[0075] Optionally, the upper end of the inclined portion 21b is located below the lower end of the ash guiding plate 1a of the dust removal box 1. The lower end of the dust removal box 1 is a conical ash guiding hopper formed by the inclined ash guiding plate 1a.

[0076] The embodiment of the present invention uses a magnetically controlled arc-shaped guide platform 3. During the dust removal process, the arc-shaped guide platform 3 can adsorb metal impurities in the dust. On the one hand, the metal impurities can be removed during dust recovery to achieve preliminary classification of the dust. By classifying the ash, it can be easily recycled or reduce the difficulty of subsequent sorting to improve efficiency. On the other hand, it can reduce the mixing of metal impurities into the liquid, reduce the metal content in the liquid, and facilitate the recycling of the liquid.

[0077] In one embodiment, a filter plate 22 is further provided in the ash box 2. Through the setting of the filter plate 22, the lower end of the partition 21 is connected to the upper surface of the filter plate 22 and the upper end extends upward. The ash box 2 is divided into a first ash chamber 2a, a second ash chamber 2b and a drainage chamber 2c located below the first ash chamber 2a and the second ash chamber 2b through the filter plate 22 and the partition 21. Through the formed drainage chamber 2c, the liquid can be easily discharged when the liquid cooling medium is used to cool the dust.

[0078] Example 2

[0079] The embodiment of the present invention application provides a boiler ash removal device. Based on embodiment 1, this embodiment also includes a telescopic structure 4. The arc guide platform 3 is telescopically arranged at the upper end opening 2b′ of the second ash collecting chamber 2b through the telescopic structure 4. The arc guide platform 3 can automatically move downward and disengage from the opening 2b′ under the drive of the telescopic structure 4.

[0080] In one embodiment, a lifting rod 5 is connected to the bottom of the arc guide platform 3, and a limiting platform 6 is arranged below the lifting rod 5. In the initial state, the arc guide platform 3 is located in the opening 2b' or protrudes from the opening 2b' under the action of the telescopic structure 4 to close the opening 2b'. At this time, the lifting rod 5 is away from the limiting platform 6, and the arc guide platform 3 is in an energized working state. Non-metallic dust will slide along the arc guide platform 3 to the first ash collection chamber 2a outside, and most of the metal dust will be adsorbed on the arc guide platform 3. When there is too much metal slag on the arc guide platform 3, the arc guide platform 3 will move downward to leave the opening 2b' under the action of the telescopic structure 4, and the lifting rod 5 will contact the limiting platform 6. When the two are in contact, the controller receives a signal and controls the arc guide platform 3 to power off and demagnetize, so that the metal slag adsorbed on the arc guide platform 3 slides into the second ash collection chamber 2b. Optionally, the installation position of the limiting platform 6 can be fixed by a support rod connected to the partition or the inner wall of the ash collecting box, and can also be fixed by a support rod connected to the filter plate or the bottom wall of the ash collecting box.

[0081] Example 3

[0082] Based on Example 2, Figures 1-3 and Figure 5As shown, in this embodiment, the telescopic structure 4 includes a plurality of support plates 41 disposed below the arc-shaped diversion platform 3, and a first spring 42 connected between the support plate 41 and the arc-shaped diversion platform 3.

[0083] Optionally, a first telescopic rod 43 is connected between the support plate 41 and the arc-shaped diversion platform 3, the first spring 42 is sleeved on the first telescopic rod 43, and the first telescopic rod 43 can extend or contract with the movement of the arc-shaped diversion platform 3, so as to increase the stability of the arc-shaped diversion platform 3 during movement under the action of the first telescopic rod 43.

[0084] As an implementation scenario, in this scenario, a pressure switch is provided on the limit platform 6, the output end of the pressure switch is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the input end of the electromagnetic arc-shaped diversion platform 3 to control the energization or de-energization of the electromagnetic arc-shaped diversion platform 3. During use, in the initial state, the arc-shaped diversion platform 3 is located within the opening 2b' or protrudes from the opening 2b' under the action of the first spring 42 to close the opening 2b'. At this time, the lifting rod 5 is far away from the limit platform 6, and the arc-shaped diversion platform 3 is in an energized working state. Non-metallic dust will slide down along the arc-shaped diversion platform 3 into the first dust collection chamber 2a on the outside, while metallic dust will be adsorbed on the arc-shaped diversion platform 3. When there is too much metal slag on the arc-shaped diversion platform 3, it will move downward until it disengages from the opening 2b'. At this time, the lifting rod 5 will contact the pressure switch on the limit platform 6, and the controller receives the signal of the pressure switch and controls the arc-shaped diversion platform 3 to be de-energized and demagnetized, so that the metal slag adsorbed on the arc-shaped diversion platform 3 slides into the second dust collection chamber 2b.

[0085] As another implementation scenario, in this scenario, a boss 31 is provided at the bottom of the arc-shaped diversion platform 3. A groove 311 is formed on the boss 31. A first contact piece 32 is fixed at the bottom of the groove 311. A second contact piece 33 is movably arranged above the first contact piece 32. One side of the second contact piece 33 is connected to the arc-shaped diversion platform 3 through a second spring 34, and the other side is fixedly connected to the lifting rod 5. And the end of the lifting rod 5 away from the second contact piece 33 penetrates through the first contact piece 32 and the boss 31 and extends below the boss 31. The position of the lifting rod 5 corresponds to the position of the limiting platform 6. During use, when the arc-shaped diversion platform 3 moves downward under pressure until its outer side moves out of the opening 2b', the lifting rod 5 will compress the second spring 34 under the action of the limiting platform 6 and make the second contact piece 33 move away from the first contact piece 32, so as to cut off the power supply and demagnetize the arc-shaped diversion platform 3; when the pressure on the arc-shaped diversion platform 3 is released, the arc-shaped diversion platform 3 will move upward under the action of the first spring 42, thereby driving the lifting rod 5 to move upward synchronously. After the lifting rod 5 moves away from the limiting platform 6, the second contact piece 33 fits with the first contact piece 32 under the restoring force of the second spring 34 to energize the arc-shaped diversion platform 3 and make it magnetic. The first contact piece and the second contact piece are positive and negative contact pieces used in cooperation. After the positive and negative contact pieces are in contact, they form a complete closed circuit with the power supply to make the arc-shaped diversion platform energized and magnetic. When the positive and negative contact pieces are separated, the arc-shaped diversion platform is cut off the power supply and the magnetism disappears.

[0086] In the embodiment of the present invention, the arc-shaped diversion platform 3 forms a telescopic structure through the first spring 42, so that the arc-shaped diversion platform 3 will automatically move downward after adsorbing a certain amount of metal slag. At the same time, in cooperation with the lifting rod 5 and the limiting platform 6, the automatic power-off and demagnetization of the arc-shaped diversion platform 3 are realized, and the automatic discharging of metal slag is realized, and the metal slag recovery effect is good.

[0087] In an implementation manner, the boss 31 and the limiting platform 6 are made of magnets that can attract each other. During use, when the arc-shaped diversion platform 3 gradually moves downward close to the limiting platform 6 under pressure, the limiting platform 6 will generate a suction force on the boss 31, so as to facilitate the arc-shaped diversion platform 3 to break away from the opening 2b' and the second contact piece 33 to move away from the first contact piece 32; when the pressure on the arc-shaped diversion platform 3 is released, under the action of the first spring 42, the arc-shaped diversion platform 3 and the boss 31 move upward, and the boss 31 is separated from the limiting platform 6.

[0088] In one embodiment, the limiting platform 6 is an electromagnet, which is used in cooperation with the convex platform 31. Exemplarily, the convex platform 31 can be made of a metal material that can be attracted by the electromagnet limiting platform. At the same time, an elastic pressure sensor 7 is provided at the lower part of the inner wall of the partition 21 at the opening 2b', that is, a pressure sensor 7 is provided at a position close to the lower part of the inner wall at the high end of the inclined part 21b. The output end of the pressure sensor 7 is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the input end of the electromagnet limiting platform 6. The controller receives the communication data of the pressure sensor 7 and controls the energization or power-off of the electromagnet limiting platform 6.

[0089] During use, when the arc-shaped diversion platform 3 closes the opening 2b' under the action of the first spring 42 to be in an energized working state, the arc-shaped diversion platform 3 does not contact the pressure sensor 7. At this time, the limiting platform 6 is in a power-off and demagnetized state; when there is too much metal slag on the arc-shaped diversion platform 3, it will move downward until it contacts the pressure sensor 7 on the side wall of the partition 21. At this time, the pressure sensor 7 will transmit a signal to the controller. After receiving the signal, the controller controls the electromagnet limiting platform 6 to be energized and have magnetism, so that the electromagnet limiting platform 6 generates a suction force on the convex platform 31. When the convex platform 31 approaches the limiting platform 6 or the two are attracted to each other, the lifting rod 5 moves upward under the action of the limiting platform 6 to separate the second contact piece from the first contact piece, so that the arc-shaped diversion platform 3 is powered off and the metal slag on its surface slides down to the second ash collection chamber 2b. After the metal slag is discharged, the limiting platform 6 is powered off. The limiting platform 6 can be provided with a time-delay switch to make the limiting platform 6 automatically power off after being energized for a certain period of time to facilitate the complete sliding out of the metal slag on the arc-shaped diversion platform 3. In this embodiment, the electromagnet limiting platform is matched with the convex platform 31. When the metal slag on the arc-shaped diversion platform 3 slides to the second ash collection chamber 2b, the power-off of the electromagnet limiting platform 6 makes the arc-shaped diversion platform 3 quickly move upward and reset elastically under the action of the first spring 42. The generated jitter can effectively shake off the residual dust attached to the surface of the arc-shaped diversion platform 3.

[0090] Embodiment 4

[0091] On the basis of Example 2, different from Example 3, in this embodiment, the telescopic structure 4 adopts an electric telescopic rod, and the electric telescopic rod and the electromagnetic arc guide platform 3 are both electrically connected to the controller, and the controller regulates the opening and closing of the electric telescopic rod and the electromagnetic arc guide platform 3. Exemplarily, a time program is pre-examined in the controller, so that the controller intermittently controls the electric telescopic rod and the electromagnetic arc guide platform, that is, in the initial state, the electric telescopic rod drives the arc guide platform 3 to close the opening 2b', and at the same time, the arc guide platform has magnetism; after a certain period of time, the electric telescopic rod drives the arc guide platform 3 to move downward and detach from the opening 2b', and at the same time, the arc guide platform 3 is demagnetized; when the metal dust on the arc guide platform 3 is discharged to the second dust collection chamber 2b, the electric telescopic rod drives the arc guide platform 3 to automatically return to the initial position. In other embodiments, a weight sensor electrically connected to the controller may be provided on the electromagnetic arc guide platform 3. When in use, the controller receives the communication data of the weight sensor to adjust the opening and closing of the electric telescopic rod and the electromagnetic arc guide platform 3, that is, when the value detected by the weight sensor reaches a preset value, the controller receives the signal and adjusts the electric telescopic rod to drive the arc guide platform 3 to move downward and demagnetize the arc guide platform. The electric telescopic rod is not shown in the figure and adopts the existing technology. The electric telescopic rod can also be replaced by a cylinder.

[0092] Example 5

[0093] The present invention provides a boiler dust removal device, referring to Figure 1 , Figure 4 and Figure 6 As shown, the boiler dust removal device also includes a dust scraping mechanism 8, which is rotatably arranged in the dust removal box 1 and is used to remove dust accumulated on the inner wall of the dust removal box 1.

[0094] Furthermore, the scraping mechanism 8 includes a driving member 81, a rotating rod 82, a rotating frame 83, a third spring 84, a mounting plate 85 and a brush 86. The rotating rod 82 is rotatably arranged in the dust removal box 1, the rotating frame 83 is mounted on the rotating rod 82, and its cross section is a П-shaped structure, the mounting plate 85 is connected to the outer wall of the rotating frame 83 through the third spring 84, and the brush 86 is connected to the mounting plate 85 and is arranged close to the inner wall of the dust removal box 1. One end of the rotating rod 82 is connected to the power output end of the driving member 81, and the rotating rod 82 can rotate in the dust removal box 1 under the drive of the driving member 81, and the rotating frame 83 is driven to rotate during the rotation of the rotating rod 82. The brush 86 on the mounting plate 85 always fits the inner wall of the dust removal box 1 under the action of the third spring 84, so that the cleaning of the inner wall of the dust removal box 1 is more thorough.

[0095] In one embodiment, an installation groove 831 is formed in the rotary frame 83. A plurality of hinge rod groups are hinged in the installation groove 831. Each hinge rod group includes two hinge rods 87. One ends of the two hinge rods 87 are respectively hinged to the installation groove 831 and the installation plate 85, and the other ends of the two hinge rods 87 are hinged together, that is: after the two hinge rods 87 are hinged, a V-shaped structure is formed, and the two open ends thereof are respectively hinged to the installation groove 831 and the installation plate 85. A third spring 84 is connected within the V-shaped angle formed by the two hinge rods 87.

[0096] Optionally, a second telescopic rod 88 is further provided between the installation plate 85 and the installation groove 831. Two second telescopic rods 88 can be provided on each side, and are respectively arranged at the upper and lower ends of the installation plate 85 at intervals. Under the action of the second telescopic rod 88, the stability of the installation plate during the movement inside the installation groove 831 is increased, and the stability of the device during use is improved.

[0097] Optionally, the structure of the installation plate 85 is adapted to the structure of the dust removal box 1. Correspondingly, the structure of the brush 86 is adapted to the installation plate 85. Exemplarily, the lower end of the dust removal box 1 is a dust guiding hopper with a conical structure, which is formed by an inclined dust guiding plate 1a. The installation plate 85 includes a vertical section and an inclined section connected to the bottom end of the vertical section. The vertical section is adapted to the inner wall of the dust removal box 1 and is arranged close to its inner wall, and the inclined section is adapted to the dust guiding plate 1a and is arranged close to its surface.

[0098] Optionally, the driving member 81 is a driving motor, and the power output end of the driving motor is in transmission connection with the rotating rod 82.

[0099] Optionally, the driving motor is installed on the top of the dust removal box 1 through an L-shaped installation plate, and a driving bevel gear 811 is installed at its power output end. One end of the rotating rod 82 is rotatably connected to the bottom wall of the dust removal box 1 through a bearing, and the other end penetrates through the top wall and is installed with a driven bevel gear 812 meshing with the driving bevel gear 811.

[0100] Embodiment 6

[0101] The embodiment of the present invention application provides a boiler ash removal device. On the basis of any one of Embodiments 1-5, referring to Figure 1 and Figure 7 As shown, in this embodiment, the boiler ash removal device further includes an ash removal conveying cylinder 9 and a first cooling mechanism 10 arranged on the ash removal conveying cylinder 9. The inlet of the ash removal conveying cylinder 9 is communicated with the ash discharge pipe of the boiler body 11, and the outlet is communicated with the inlet of the dust removal box 1. The first cooling mechanism 10 is used to cool the dust inside the ash removal conveying cylinder 9.

[0102] Optionally, the ash removal conveying cylinder 9 is installed on the top of the dust removal box through a support frame 91, and a spiral conveying mechanism is arranged inside it for pushing the ash slag towards the dust removal box 1.

[0103] Optionally, the first cooling mechanism 10 includes a water tank 101 sleeved on the outer wall of the ash removal conveying cylinder 9 to form a jacket-type cooling structure, that is, mounting openings are provided at both ends of the water tank 101, and the water tank 101 is connected to the outer wall of the ash removal conveying cylinder 9 through the mounting openings. A water inlet pipe 102 and a water outlet pipe are provided on the water tank 101. One end of the water inlet pipe 102 is connected and communicated with the water tank 101, and the other end is connected with a treatment pipe 103 for scale prevention treatment. An annular magnet 104 is sleeved on the outer wall of the treatment pipe 103.

[0104] Optionally, a convex structure is provided on the inner wall of the treatment pipe 103, and the magnetic path of the water flow can be extended through the convex structure. Exemplarily, the convex structure is formed by a number of protrusions 1031 provided on the inner wall of the treatment pipe 103. The number of protrusions 1031 is asymmetrically arranged. It can be understood that the protrusions 1031 on the opposite inner walls of the treatment pipe 103 are all arranged in a staggered manner. Optionally, the staggered protrusions 1031 can partially overlap. The flow direction can be changed by the multiple protrusions 1031 in the treatment pipe 103, the residence time of the cooling water can be extended, and the scale prevention effect can be further improved.

[0105] Optionally, the annular magnet 104 is an annular neodymium iron boron magnet block.

[0106] Optionally, the water inlet pipe 102 and the water outlet pipe form a circulating cooling water path.

[0107] During use, when the external circulating water cooling system sends cooling water into the interior of the treatment pipe 103 through a water pipe, the cooling water will cut the magnetic induction lines of the annular magnet 104. At this time, the cooling water is softened, so that the problem of dirt generation on the inner wall of the first cooling water tank 101 can be avoided, and the function of scale prevention is realized. By providing a convex structure on the inner wall of the treatment pipe 103, the magnetic path of the water flow can be extended, and the scale prevention effect can be further improved.

[0108] Embodiment 7

[0109] The embodiment of the present invention provides a boiler ash removal device. On the basis of any one of Embodiments 1-5, in this embodiment, a second cooling mechanism 12 is further included, and the second cooling mechanism 12 is used to spray cooling liquid on the dust removal box 1.

[0110] Optionally, the second cooling mechanism 12 includes multiple groups of first nozzles 121. During use, the cooling medium enters the first nozzles 121 through pipelines and is ejected by the first nozzles 121. The cooling medium ejected by the first nozzles 121 can cool the falling ash. The cooling medium can be a cooling air flow or a spray. Exemplarily, as an implementation scenario, in this scenario, when the cooling medium is a spray, the first nozzles 121 are arranged on the ash guide plate 1a, and their ejection direction is from bottom to top; the first nozzles 121 are connected to the first cooling water tank 122 through pipelines, and a water pump 123 for pressurized water delivery is installed on the pipeline. During use, the water pump 123 pumps the coolant in the first cooling water tank 122 into the first nozzles 121 and is ejected by the first nozzles 121. The water mist ejected by the first nozzles 121 can cool the falling ash. Optionally, the humidity of the dust can be controlled at 3 - 8%. As another implementation scenario, in this scenario, when the cooling medium is a cooling air flow, the first nozzles 121 can be arranged on the top of the dust removal box 1, and the cooling air flow is delivered to the first nozzles by the refrigeration mechanism.

[0111] In one implementation manner, the boiler ash removal device further includes a third cooling mechanism 13, and the third cooling mechanism 13 is used to deliver a cooling medium to the first ash collection chamber 2a. Preferably, the third cooling mechanism 13 includes a second cooling water tank and a second nozzle 131 installed on the inner wall of the ash collection box 2 or the lower surface of the ash guide plate 1a facing the partition plate 21. During use, the second nozzle 131 can eject water mist towards the partition plate 21 to cool the dust entering the first ash collection chamber 2a again. Through the setting of the third cooling mechanism 13, the temperature of the dust can be further reduced and the dust can be inhibited.

[0112] In one implementation manner, a drain pipe is connected to the bottom of the liquid discharge chamber 2c, and the liquid can be recycled through the drain pipe.

[0113] Embodiment 8

[0114] The embodiment of the present invention application provides a boiler ash removal device. In this embodiment, the boiler ash removal device includes the ash removal conveying cylinder 9 and the first cooling mechanism 10 described in Embodiment 6, and the second cooling mechanism 12 or the second cooling mechanism 12 and the third cooling mechanism 13 described in Embodiment 7. On the basis of the ash removal conveying cylinder 9 and the first cooling mechanism 10, further setting the second cooling mechanism 12 or the second cooling mechanism 12 and the third cooling mechanism 13 can further reduce the temperature of the dust.

[0115] Embodiment 9

[0116] The embodiment of the present invention application provides a boiler ash removal method, including the following steps:

[0117] Step S1, discharging the ash into the dust removal box 1.

[0118] In one embodiment, the ash discharge valve on the boiler body 11 is opened, and the ash and slag enter the ash removal and conveying cylinder 9 and are conveyed through the screw conveying mechanism. During the conveying process, the first cooling mechanism 10 preliminarily cools the ash and slag in the ash removal and conveying cylinder 9.

[0119] The preliminary cooling specifically includes: First, the external circulating water cooling system sends cooling water into the interior of the treatment pipe 103 through a water pipe. When the cooling water passes through several protrusions 1031 and is softened by the annular magnet 104, it then enters the water tank 101 to cool the ash and slag in the ash removal and conveying cylinder 9. When the liquid temperature in the water tank 101 is relatively high, it is discharged through the water outlet pipe. The arrangement of the annular magnet and the protrusion structure of the water inlet pipe helps prevent the problem of dirt generation on the inner wall of the first cooling water tank 101. Optionally, when the liquid temperature in the water tank 101 is relatively high, it is discharged through the water outlet pipe for cooling and then flows back into the water tank 101 through the water inlet pipe 102 again.

[0120] Step S2: After the ash and slag pass through the dust removal box 1, they enter the ash collection box 2. When entering the ash collection box 2, the arc-shaped guide platform 3 adsorbs metal slag, and non-metallic dust will slide down along the arc-shaped guide platform 3 into the first ash collection chamber 2a. When there is too much metal slag on the arc-shaped guide platform 3, under the action of the telescopic structure 4, the arc-shaped guide platform 3 moves downward to disengage from the opening 2b′. At the same time, the lifting rod 5 contacts the limiting platform 6, and the controller receives the signal and regulates the arc-shaped guide platform 3 to cut off the power and demagnetize, and the metal slag adsorbed on the arc-shaped guide platform 3 slides into the second ash collection chamber 2b.

[0121] In one embodiment, in step S2, the second cooling mechanism 12 performs secondary cooling on the falling ash and slag. The secondary cooling can adopt air cooling or spray cooling. Specifically, a first nozzle installed on the top of the ash collection box 2 blows out a cooling air flow to achieve air cooling; or a first nozzle 121 installed on the ash guiding plate 1a sprays water mist to cool the falling ash and slag.

[0122] In one embodiment, in step S2, when the ash and slag enter the first ash collection chamber 2a from the arc-shaped guide platform 3, the third cooling mechanism 13 performs secondary cooling or tertiary cooling on the ash and slag. Specifically, a second nozzle 131 installed on the inner wall of the ash collection box 2 or the ash guiding plate 1a sprays water mist on the partition plate 21 to further cool the dust and suppress dust.

[0123] In one embodiment, in step S2, when there is too much metal slag on the arc-shaped diversion table 3, it will come into contact with the pressure sensor 7 on the side wall of the partition 21. The signal is transmitted to the controller through the pressure sensor 7, so that the controller controls the electromagnet limit table 6 to be energized and magnetic, and the electromagnet limit table 6 generates a suction force on the boss 31. As a result, the lifting rod 5 moves upward under the action of the limit table 6 to separate the second contact piece from the first contact piece, so that the arc-shaped diversion table 3 is powered off and the metal slag on its surface slides down to the second ash collection chamber 2b. When the metal slag is completely discharged, the limit table 6 is powered off.

[0124] Step S3, the ash and slag entering the first ash collection chamber 2a and the second ash collection chamber 2b can be collected through the ash collection boxes movably arranged in the ash collection chambers, that is: the first ash collection chamber 2a and the second ash collection chamber 2b are respectively provided with draw-type ash collection boxes. Or, it is discharged through the slag discharge pipe, that is: the first ash collection chamber 2a and the second ash collection chamber 2b are respectively communicated with the slag discharge pipe, and the collected ash and slag are guided to a designated position for collection through the slag discharge pipe.

[0125] In the foregoing, only some exemplary embodiments have been briefly described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0126] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", "end", "side", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0127] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention application, "a plurality" means two or more unless otherwise specifically defined.

[0128] Terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A boiler ash removal device, characterized in that, Comprising: Dust removal box (1); Ash collection box (2), arranged below the dust removal box (1) and communicated with the outlet of the dust removal box (1); A partition (21) is arranged in the ash collection box (2), and a first ash collection chamber (2a) and a second ash collection chamber (2b) are formed in the ash collection box (2) by the partition (21). There is a gap between the top of the partition (21) and the bottom of the dust removal box (1); Arc-shaped diversion platform (3), movably arranged at the upper end opening (2b′) of the second ash collection chamber (2b) through a telescopic structure (4); Wherein, the arc-shaped diversion platform (3) has a first working state of magnetically adsorbing metal dust and a second working state of demagnetization. When the arc-shaped diversion platform (3) closes the opening (2b′), it is in the first working state. When the arc-shaped diversion platform (3) moves downward and disengages from the opening (2b′), it is in the second working state.

2. The boiler ash removal device according to claim 1, characterized in that: The arc-shaped diversion platform (3) is an electromagnet or an electromagnet is embedded inside the arc-shaped diversion platform (3); And / or, the partition (21) includes a connected vertical portion (21a) and an inclined portion (21b), and the inclined portion (21b) is arranged to expand downward from one end of the arc-shaped diversion platform (3); And / or, a filter plate (22) is further arranged in the ash collection box (2). The lower end of the partition (21) is connected to the upper surface of the filter plate (22). The ash collection box (2) is separated into a first ash collection chamber (2a), a second ash collection chamber (2b), and a liquid discharge chamber (2c) located below the ash collection chamber by the filter plate (22) and the partition (21).

3. The boiler ash removal device according to claim 1 or 2, characterized in that, The boiler ash removal device further includes: Lifting rod (5), connected to the bottom of the arc-shaped diversion platform (3); Limit platform (6), arranged below the lifting rod (5) and corresponding to the position of the lifting rod (5); Wherein: In the first working state, the arc-shaped diversion platform (3) is located inside the opening (2b′) or partially protrudes from the opening (2b′) under the action of the telescopic structure (4). The lifting rod (5) keeps a distance from the limit platform (6), and the arc-shaped diversion platform (3) is electrified and has magnetism; In the second working state, the arc-shaped diversion platform (3) moves downward under the action of the telescopic structure (4) and disengages from the opening (2b′). The lifting rod (5) contacts the limit platform (6) to trigger a power-off signal, causing the arc-shaped diversion platform (3) to demagnetize.

4. The boiler ash removal device according to claim 3, characterized in that: A pressure switch is arranged on the limit platform (6). The pressure switch and the electromagnetic arc-shaped diversion platform (3) are both electrically connected to the controller. The controller receives the pressure switch signal and controls the opening and closing of the arc-shaped diversion platform (3). When the lifting rod (5) keeps a distance from the limit platform (6), the arc-shaped diversion platform (3) has magnetism. When the lifting rod (5) contacts the limit platform (6), the controller receives the pressure switch signal and controls the arc-shaped diversion platform (3) to demagnetize; Or, A boss (31) is provided at the bottom of the arc-shaped diversion table (3). A groove (311) is formed in the boss (31). A first contact piece (32) is fixed to the bottom of the groove (311). A second contact piece (33) is movably arranged above the first contact piece (32). One side of the second contact piece (33) is connected to the arc-shaped diversion table (3) through a second spring (34), and the other side is connected to the lifting rod (5). The lower end of the lifting rod (5) extends below the boss (31). When the lifting rod (5) keeps a distance from the limit table (6), the second contact piece (33) contacts and conducts with the first contact piece (32) under the action of the second spring (34) to energize the arc-shaped diversion table (3) to have magnetism. When the lifting rod (5) contacts the limit table (6), the lifting rod (5) compresses the second spring (34) and separates the second contact piece (33) from the first contact piece (32) to cut off the power supply of the arc-shaped diversion table (3) to demagnetize it.

5. The boiler ash removal device according to claim 4, characterized in that: The boss (31) and the limit table (6) are made of magnets that can attract each other; Or, The limit table (6) adopts an electromagnet structure. A pressure sensor (7) is arranged on the inner wall of the partition plate (21). Both the pressure sensor (7) and the electromagnet limit table (6) are electrically connected to the controller. The controller receives the communication data of the pressure sensor (7) and controls the opening and closing of the electromagnet limit table (6); The telescopic structure (4) includes a plurality of support plates (41) arranged below the arc-shaped diversion table (3), and a first spring (42) connected between the support plate (41) and the arc-shaped diversion table (3); When the arc-shaped diversion table (3) adsorbs metal slag reaching a preset weight, it moves downward under the compression of the first spring (42), so that the pressure sensor (7) detects the contact pressure. The controller receives the pressure signal and controls the electromagnet limit table (6) to be energized to have magnetism to generate a suction force on the boss (31). After the arc-shaped diversion table (3) cuts off the power supply and demagnetizes to discharge all the metal slag, the electromagnet limit table (6) cuts off the power supply and demagnetizes.

6. The boiler ash removal device according to claim 1, characterized in that: The telescopic structure (4) includes a plurality of support plates (41) arranged below the arc-shaped diversion table (3), and a first spring (42) connected between the support plate (41) and the arc-shaped diversion table (3); Or, The telescopic structure (4) is an electric telescopic rod. The movable end of the electric telescopic rod is connected to the arc-shaped diversion table (3). Both the electric telescopic rod and the electromagnetic arc-shaped diversion table (3) are electrically connected to the controller. The controller controls the electric telescopic rod to drive the arc-shaped diversion table (3) to switch between a first working state and a second working state.

7. The boiler ash removal device according to claim 1, characterized in that: It further includes an ash removal conveying cylinder (9) and a first cooling mechanism (10) arranged on the ash removal conveying cylinder (9). The inlet of the ash removal conveying cylinder (9) is communicated with the ash discharge pipe of the boiler body (11), and the outlet is communicated with the inlet of the dust removal box (1). The first cooling mechanism (10) is used to cool the dust inside the ash removal conveying cylinder (9); and / or, it further includes a second cooling mechanism (12) for spraying coolant into the dust removal box (1); and / or, it further includes a third cooling mechanism (13) for spraying coolant into the ash collection box (2).

8. The boiler ash removal device according to claim 1, characterized in that, This boiler ash removal device further includes a scraping mechanism (8) arranged in the dust removal box (1). The scraping mechanism (8) includes: a driving member (81) drivingly connected to a rotating rod (82) rotatably arranged in the dust removal box (1); a rotating frame (83) connected to the rotating rod (82); a mounting plate (85) arranged on the outer side of the rotating frame (83), and a brush (86) is arranged on one side of the mounting plate (85) close to the inner wall of the dust removal box (1); wherein, an installation groove (831) is formed on the rotating frame (83), and a plurality of groups of hinged rods are hinged between the installation groove (831) and the mounting plate (85). Each group of hinged rod groups includes two hinged hinged rods (87), and a third spring (84) is connected within the included angle formed by the two hinged rods (87).

9. The boiler ash removal device according to claim 7, characterized in that, The ash removal conveying cylinder (9) is installed on the top of the dust removal box (1) through a support frame (91), and a screw conveying mechanism is arranged inside it; The first cooling mechanism (10) includes: a water tank (101) arranged on the outer wall of the ash removal conveying cylinder (9); a water inlet pipe (102) and a water outlet pipe are arranged on the water tank (101); one end of the water inlet pipe (102) is communicated with the water tank (101), and the other end is connected to a treatment pipe (103) for scale prevention treatment. An annular magnet (104) is sleeved on the outer wall of the treatment pipe (103).

10. A boiler ash removal method, which is realized by a boiler ash removal device described in any one of claims 2 to 9, characterized in that, The boiler ash removal method includes the following steps: Step S1, discharging the ash and slag generated by the boiler into the dust removal box (1); Step S2, after the ash and slag pass through the dust removal box (1), they enter the ash collection box (2). The ash and slag entering the ash collection box (2) are separated into metal slag and non-metal dust through the magnetic adsorption effect of the arc-shaped diversion platform (3). Among them, the non-metal dust slides down along the arc-shaped diversion platform (3) to the first ash collection chamber (2a). When the adsorbed metal slag reaches the preset weight, the arc-shaped diversion platform (3) moves downward under the action of the telescopic structure (4) and disengages from the opening (2b′). The lifting rod (5) contacts the limit platform (6) to trigger the controller, so that the arc-shaped diversion platform (3) is powered off and demagnetized, and the metal slag slides down to the second ash collection chamber (2b); Step S3, the ash and slag entering the first ash collection chamber (2a) and the second ash collection chamber (2b) are collected through the movably arranged ash collection box or guided to a designated position for collection through the slag discharge pipe.

Images