Slag dryer for treating bottom slag of coal-fired boiler

Abstract

The utility model provides a slag drying machine for treating bottom slag of a coal-fired boiler, which comprises a ventilation hood, a first guide cylinder fixedly arranged in the ventilation hood, a mounting cylinder fixedly arranged on the ventilation hood, a second guide cylinder arranged in the mounting cylinder, a first guide cylinder corresponding to the second guide cylinder, and an air exhaust mechanism arranged between the mounting cylinder and the second guide cylinder, the air exhaust mechanism is started to enable external air to enter from the bottom of the first guide cylinder through the ventilation holes to quickly cool materials falling from the second guide cylinder, and the air exhaust mechanism is started to quickly exhaust hot air in the mounting cylinder, so that the air pressure in the mounting cylinder is reduced; external air rapidly enters from the bottom of the first guide cylinder through the ventilation holes, then circulation of air in the mounting cylinder is accelerated through an air draft mechanism at the upper end, external cold air rises to perform sufficient heat exchange with slag falling from the second guide cylinder, the slag is rapidly cooled, the slag cooling efficiency is improved, and the service life of the furnace is prolonged. Meanwhile, the energy consumption is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of slag drying machines, in particular to a slag drying machine for treating bottom slag of a coal-fired boiler. Background Art

[0002] At present, the dry slag machine is the core equipment for bottom slag treatment of coal-fired boilers, which is used to cool and transport the hot slag discharged from the boiler.

[0003] The patent document with application number 202220341388.1 discloses a dry slag machine for treating bottom slag of a coal-fired boiler, including a material transport pipe and a heat dissipation hole. A heat dissipation hole is provided on the top of the material transport pipe, and the heat dissipation hole and the material transport pipe are fixed by interlacing. A cooling plate is provided inside the heat dissipation hole, and the cooling plate and the heat dissipation hole are fixedly connected. A fan is provided in the middle of the heat dissipation hole, and the fan and the heat dissipation hole are rotatably connected. A dustproof net is provided at one end of the heat dissipation hole, and a shell is provided on one side of the material transport pipe, and the shell and the material transport pipe are fixedly connected. A water spray head is provided inside the shell, and the heat dissipation hole can be used to dissipate heat for high-temperature slag. When working, the fan and the cooling plate are started, so that the wind blown into the material transport pipe by the fan is cold wind, which can better cool down the high-temperature slag, reduce its damage to the material transport pipe, and increase the service life of the material transport pipe. The dustproof net can prevent the heat dissipation hole from dust, so as to prevent external dust from entering the interior of the material transport pipe through the heat dissipation hole.

[0004] However, the slag cannot be cooled quickly when it falls through the buffer tube. When the buffer tube contacts the material transport pipe, the slag is easily stuck to the joint due to its high temperature, causing blockage.

[0005] Therefore, in view of the shortcomings of the above-mentioned scheme in actual production and implementation, it has been revised and improved. At the same time, in the spirit and concept of seeking excellence, with the assistance of professional knowledge and experience, and after many ingenuity and experiments, the present utility model was created, and a dry slag machine for bottom slag treatment of coal-fired boiler is provided to solve the problem. Utility Model Content

[0006] The utility model provides a slag dryer for treating bottom slag of a coal-fired boiler, which solves the problems in the prior art.

[0007] The technical solution of the utility model is implemented as follows: a dry slag machine for treating bottom slag of a coal-fired boiler, comprising a ventilation hood, the ventilation hood is provided with ventilation holes, and is characterized in that: a first guide tube is fixedly arranged in the ventilation hood, a mounting tube is fixedly arranged on the ventilation hood, a second guide tube is arranged in the mounting tube, the first guide tube corresponds to the second guide tube, an exhaust mechanism is installed between the mounting tube and the second guide tube, and the exhaust mechanism is started to allow external air to enter from the bottom of the first guide tube through the ventilation holes to quickly cool down the material falling from the second guide tube;

[0008] During use of the above technical solution: the exhaust mechanism is started to quickly discharge the hot air in the installation tube, the air pressure in the installation tube is reduced, and the external air quickly enters from the bottom of the first guide tube through the ventilation holes, and then passes through the exhaust mechanism at the upper end to accelerate the circulation of the gas in the installation tube. The external cold air rises and fully exchanges heat with the slag falling from the second guide tube, thereby achieving rapid cooling of the slag, improving the slag cooling efficiency, and reducing energy consumption.

[0009] As a preferred technical solution: the ventilation hood is connected and fixed to the upper end of the first guide tube through a first sealing plate, a guide cavity is formed between the ventilation hood and the first guide tube, and the ventilation hole is connected to the guide cavity;

[0010] External gas enters the guide cavity through the ventilation holes, and then enters the installation tube through the bottom of the first guide tube, cooling the slag falling in the installation tube. The first guide tube prevents the falling slag from entering the ventilation holes, and has an anti-blocking function.

[0011] As a preferred technical solution: the upper end of the second guide tube is fixedly connected to the mounting tube, and the material in the mounting tube is guided to the center by the second guide tube. A mounting cavity is formed between the second guide tube and the mounting tube, and the air extraction mechanism is installed in the mounting cavity;

[0012] During use of the above technical solution: the slag falling into the mounting tube is guided toward the center through the second guide tube. At the same time, the second guide tube protects the exhaust mechanism to prevent the slag from falling on the exhaust mechanism. Long-term use causes slag accumulation, thereby affecting the slag removal efficiency.

[0013] As a preferred technical solution: the air extraction mechanism includes an air supply channel fixedly installed in the mounting cylinder, the air supply channel is connected to an air suction hood, an exhaust pipe connected to the air supply channel is arranged in the mounting cylinder, and a first driving component is arranged on the exhaust pipe. When the first driving component is started, the gas in the mounting cylinder enters from the air suction hood and is discharged through the exhaust pipe, while the external air enters through the ventilation hole, rises in the mounting cylinder and the first guide cylinder, and accelerates the circulation of air in the mounting cylinder.

[0014] As a preferred technical solution: there are multiple air suction hoods, and the multiple air suction hoods are evenly distributed along the circumference of the gas transmission channel;

[0015] Through multiple suction hoods evenly distributed in the circumferential direction, the materials in the installation cylinder and the first guide cylinder are evenly raised, thereby improving the uniformity of slag cooling.

[0016] As a preferred technical solution: a liquid infusion pipeline is installed in the installation cylinder, a plurality of spray nozzles are connected to the liquid infusion pipeline, a liquid inlet pipe connected to the liquid infusion pipeline is provided on the installation cylinder, and the liquid infusion pipeline corresponds to the gas transmission channel;

[0017] The liquid enters the liquid delivery pipeline through the liquid inlet pipe and is sprayed out through the spray nozzle to purify the exhausted gas, remove dust from the exhausted gas and protect the environment. At the same time, the spray has a certain cooling effect on the slag, thereby improving the cooling effect of the slag.

[0018] As a preferred technical solution: a flow divider is rotatably installed in the first guide tube, the flow divider corresponds to the second guide tube, a second driving component is provided on the ventilation hood, the second driving component is connected to the flow divider through a transmission mechanism, the second driving component is started to drive the flow divider to rotate, the materials falling on the flow divider are dispersed, and then fall through the gap between the first guide tube and the flow divider;

[0019] During use, the above technical solution drives the diverter hood to rotate, thereby dispersing the slag falling through the second guide tube. The dispersed slag falls through the gap between the first guide tube and the diverter hood, thereby increasing the contact area between the slag and the cold air, improving the cooling effect of the slag, and solving the problem that the slag falls in a columnar shape, the slag in the outer circle is cooled quickly, while the slag in the inner circle is wrapped inside and cannot come into contact with the cold air, thereby reducing the cooling effect.

[0020] As a preferred technical solution: the transmission mechanism includes a first rotating shaft rotatably installed in the first guide cylinder, the first rotating shaft is fixedly connected to the diversion cover, a second rotating shaft is rotatably installed on the ventilation cover, the second driving component is transmission-connected to the second rotating shaft, and the second rotating shaft is transmission-connected to the first rotating shaft.

[0021] As a preferred technical solution: a scraper is rotatably installed in the first guide tube, and the scraper is fixed to the diverter cover by a connecting rod, and the diverter cover drives the scraper to clean the materials stuck on the inner wall of the first guide tube.

[0022] As a preferred technical solution: the lower end of the ventilation hood is connected to a material conveying component for conveying materials, and the material falling into the ventilation hood is conveyed through the material conveying component.

[0023] After adopting the above technical solution, the beneficial effects of the utility model are:

[0024] 1. Start the exhaust mechanism to quickly discharge the hot air in the installation tube, reduce the air pressure in the installation tube, and quickly enter the outside air from the bottom of the first guide tube through the ventilation holes, and then pass through the exhaust mechanism at the upper end to accelerate the circulation of the gas in the installation tube. The external cold air rises and fully exchanges heat with the slag falling from the second guide tube, so as to achieve rapid cooling of the slag, improve the cooling efficiency of the slag, and reduce energy consumption at the same time;

[0025] 2. External air enters the guide cavity through the ventilation hole, and then enters the installation tube through the bottom of the first guide tube, cooling the slag falling in the installation tube. The first guide tube prevents the falling slag from entering the ventilation hole, and has an anti-blocking function;

[0026] 3. The slag falling in the installation tube is guided to the center through the second guide tube. At the same time, the second guide tube plays a protective role on the exhaust mechanism to prevent the slag from falling on the exhaust mechanism. Long-term use causes slag accumulation, thereby affecting the slag removal efficiency;

[0027] 4. Through multiple circumferentially evenly distributed suction hoods, the materials in the installation tube and the first guide tube are evenly raised, improving the uniformity of slag cooling;

[0028] 5. The liquid enters the liquid delivery pipeline through the liquid inlet pipe and is sprayed out through the spray nozzle to purify the discharged gas, remove dust from the discharged gas and protect the environment. At the same time, the spray has a certain cooling effect on the slag, thereby improving the cooling effect of the slag;

[0029] 6. By driving the diverter hood to rotate, the slag falling through the second guide tube is dispersed, and the dispersed slag falls through the gap between the first guide tube and the diverter hood, thereby increasing the contact area between the slag and the cold air, improving the cooling effect of the slag, and solving the problem that the slag falls in a columnar shape, the slag in the outer circle is cooled quickly, while the slag in the inner circle is wrapped inside and cannot contact with the cold air, thereby reducing the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0031] Figure 1 It is a three-dimensional diagram of the utility model;

[0032] Figure 2 It is a cross-sectional view of the utility model;

[0033] Figure 3It is a three-dimensional cross-sectional view of the utility model;

[0034] Figure 4 It is an exploded view of the utility model;

[0035] Figure 5 This is a bottom view of the ventilation hood of the utility model;

[0036] Figure 6 It is a cross-sectional view of the ventilation hood of the utility model;

[0037] Figure 7 It is a top view of the installation tube of the utility model;

[0038] Figure 8 It is a cross-sectional view of the installation tube of the utility model;

[0039] Fig. 9 This is a three-dimensional diagram of the installation of the homepage pipeline of the utility model;

[0040] Fig.10 It is a three-dimensional diagram of the second embodiment of the utility model;

[0041] Fig.11 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0042] In the figure, 1-ventilation hood, 2-ventilation hole, 3-first sealing plate, 4-first guide tube, 5-guide cavity, 6-first through hole, 7-installation tube, 8-hopper, 9-second guide tube, 10-annular connecting frame, 11-gas transmission channel, 12-suction hood, 13-filter screen, 14-exhaust pipe, 15-first driving component, 16-connecting frame, 17-liquid delivery pipeline, 18-spray nozzle, 19-liquid inlet pipe, 20-second rotating shaft, 21-second driving component, 22-first gear, 23-support frame, 24-first rotating shaft, 25-second gear, 26-connecting rod, 27-scraper, 28-dividing hood, 29-base, 30-feeding barrel, 31-motor, 32-feeding port, 33-discharging port, 34-rotating shaft, 35-auger. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0044] like Figures 1 to 4As shown, a dry slag machine for treating bottom slag of a coal-fired boiler comprises a ventilation hood 1, and a ventilation hole 2 is arranged on the ventilation hood 1. The characteristics are as follows: a first guide tube 4 is fixedly arranged in the ventilation hood 1, a mounting tube 7 is fixedly arranged on the ventilation hood 1, a second guide tube 9 is arranged in the mounting tube 7, the first guide tube 4 corresponds to the second guide tube 9, an exhaust mechanism is installed between the mounting tube 7 and the second guide tube 9, and the exhaust mechanism is started to allow external air to enter from the bottom of the first guide tube 4 through the ventilation hole 2 to quickly cool down the material falling from the second guide tube 9;

[0045] Specific: such as Figure 5 and Figure 6 As shown, the ventilation hood 1 is connected and fixed to the upper end of the first guide tube 4 through the first sealing plate 3, a guide cavity 5 is formed between the ventilation hood 1 and the first guide tube 4, and the ventilation hole 2 is connected to the guide cavity 5;

[0046] The first sealing plate 3 is an annular plate, one end of the first sealing plate 3 is fixedly connected to the inner wall of the upper end of the ventilation hood 1, and the other end of the first sealing plate 3 is fixedly connected to the upper end of the first guide tube 4. The cross section of the first sealing plate 3 is trapezoidal, and the first sealing plate 3 is wide at the top and narrow at the bottom, so that a guide cavity 5 is formed between the ventilation hood 1 and the first guide tube 4;

[0047] When in use: external air enters the guide cavity 5 through the ventilation hole 2, then flows downward along the guide cavity 5, and enters the first guide cylinder through the bottom of the first guide cylinder 4.

[0048] like Figures 7 to 9 As shown, the upper end of the second guide tube 9 is fixedly connected to the installation tube 7, and the material in the installation tube 7 is guided to the center by the second guide tube 9. A mounting cavity is formed between the second guide tube 9 and the installation tube 7, and the exhaust mechanism is installed in the mounting cavity;

[0049] Specifically: the cross section of the second guide tube 9 is a trapezoid, and the second guide tube 9 is wide at the top and narrow at the bottom. A receiving hopper 8 is welded to the upper end of the mounting tube 7, and the receiving hopper 8 is connected to the second guide tube 9, and the receiving hopper 8 is connected to the boiler slag discharge port;

[0050] When in use: the receiving hopper 8 receives the high-temperature slag discharged from the boiler, and guides the slag falling into the installation tube 7 to the center through the second guide tube 9.

[0051] The air extraction mechanism includes an air delivery channel 11 fixedly installed in the installation cylinder 7, the air delivery channel 11 is connected to an air suction hood 12, an exhaust pipe 14 connected to the air delivery channel 11 is provided in the installation cylinder 7, and a first driving component 15 is provided on the exhaust pipe 14. When the first driving component 15 is activated, the gas in the installation cylinder 7 enters from the air suction hood 12 and is discharged through the exhaust pipe 14, and at the same time, the external air enters through the ventilation hole, rises in the installation cylinder and the first guide cylinder, and accelerates the circulation of air in the installation cylinder;

[0052] Specifically: the gas delivery channel 11 is an annular pipeline, an annular connecting frame 10 is welded on the gas delivery channel 11, the annular connecting frame 10 is welded on the inner wall of the installation cylinder 7, a filter screen 13 is fixedly arranged on the air suction cover 12, an exhaust pipe 14 passes through the installation cylinder 7, the exhaust pipe 14 is fixedly sealed and connected with the gas delivery channel 11, and the first driving component 15 is a fan;

[0053] There are multiple air suction hoods 12, and the multiple air suction hoods 12 are evenly distributed along the circumference of the gas transmission channel 11;

[0054] There are multiple exhaust pipes 14, which are evenly distributed along the circumference of the installation tube 7. Preferably, there are three exhaust pipes 14, and the first driving component 15 is installed on each of the three exhaust pipes.

[0055] When in use: start the fan, and let the gas in the installation tube 7 enter the air supply channel 11 through the air suction hood 12, and then enter the exhaust pipe 14 through the air supply channel 11, and be discharged through the exhaust pipe 14, so that the gas in the first guide tube rises and is discharged through the exhaust pipe 14, accelerating the circulation of air in the first guide tube.

[0056] Through multiple suction hoods evenly distributed in the circumferential direction, the materials in the installation cylinder and the first guide cylinder are evenly raised, thereby improving the uniformity of slag cooling.

[0057] A liquid infusion pipeline 17 is installed in the installation cylinder 7, and a plurality of spray nozzles 18 are connected to the liquid infusion pipeline 17. A liquid inlet pipe 19 connected to the liquid infusion pipeline 17 is provided on the installation cylinder 7, and the liquid infusion pipeline 17 corresponds to the gas transmission channel 11;

[0058] Specifically: the liquid infusion pipeline 17 is an annular pipeline, a connecting frame 16 is welded on the liquid infusion pipeline 17, the other end of the connecting frame 16 is welded to the inner wall of the mounting tube 7, the liquid infusion pipeline 17 is located at the lower end of the gas transmission channel 11, and is located in the mounting cavity, the liquid inlet pipe 19 passes through the mounting tube 7, the liquid inlet pipe 19 is connected to the gas transmission channel 11, and the other end of the liquid inlet pipe 19 is connected to a water pump;

[0059] When in use: start the water pump, the liquid enters the liquid delivery pipe 17 through the liquid inlet pipe 19 and is sprayed out through the spray nozzle 18 to purify and remove dust from the gas that has passed through the first guide tube and has undergone heat exchange. At the same time, the spray falls on the slag to further cool the slag.

[0060] like Figures 1 to 4 As shown, a flow divider 28 is rotatably installed in the first guide tube 4, and the flow divider 28 corresponds to the second guide tube 9. A second driving component 21 is provided on the ventilation hood 1, and the second driving component 21 is connected to the flow divider 28 through a transmission mechanism. The second driving component 21 is started to drive the flow divider 28 to rotate, and the materials falling on the flow divider 28 are dispersed and then fall through the gap between the first guide tube 4 and the flow divider 28;

[0061] By driving the diverter hood to rotate, the slag falling through the second guide tube is dispersed, and the dispersed slag falls through the gap between the first guide tube 4 and the diverter hood 28, thereby increasing the contact area between the slag and the cold air, improving the cooling effect of the slag, and solving the problem that the slag falls in a columnar shape, the slag in the outer circle is cooled quickly, while the slag in the inner circle is wrapped inside and cannot contact with the cold air, thereby reducing the cooling effect.

[0062] The transmission mechanism includes a first rotating shaft 24 rotatably mounted in the first guide tube 4, the first rotating shaft 24 is fixedly connected to the diverter cover 28, a second rotating shaft 20 is rotatably mounted on the ventilation cover 1, a second driving component 21 is transmission-connected to the second rotating shaft 20, and the second rotating shaft 20 is transmission-connected to the first rotating shaft 24;

[0063] Specifically: the second driving component 21 is a driving motor, a first through hole 6 is opened on the ventilation cover 1, a second rotating shaft 20 is rotatably installed in the first through hole 6, a coaxial first gear 22 is welded on the second rotating shaft 20, a support frame 23 is fixedly provided on the inner wall of the first guide cylinder 4, a shaft sleeve is provided on the support frame 23, a first rotating shaft 24 is rotatably installed in the shaft sleeve, a coaxial second gear 25 is welded on the first rotating shaft 24, the first gear 22 is meshed with the second gear 25, and the first gear 22 and the second gear 25 are existing well-known technologies;

[0064] When in use: start the driving motor, drive the first gear 22 to rotate through the second rotating shaft 20, the first gear 22 drives the first rotating shaft 24 to rotate through the second gear 25, and drives the diverter hood 28 to rotate through the first rotating shaft 24 to disperse the slag falling on the diverter hood 28.

[0065] A scraper 27 is rotatably installed in the first guide tube 4. The scraper 27 is fixedly connected to the diverter cover 28 via a connecting rod 26. The diverter cover 28 drives the scraper 27 to clean the materials stuck on the inner wall of the first guide tube 4.

[0066] Specifically: a connecting rod 26 is welded on the first rotating shaft 24, and the connecting rod 26 is welded and connected to a scraper 27, and the scraper 27 contacts the inner wall of the first guide tube 4. The connecting rod 26 is driven to rotate by the first rotating shaft 24, and the connecting rod 26 drives the scraper 27 to clean the materials stuck on the inner wall of the first guide tube 4; Example

[0067] like Fig.10 and Fig.11 As shown, the lower end of the ventilation hood 1 is connected to a material conveying assembly for conveying materials, and the material falling in the ventilation hood 1 is conveyed through the material conveying assembly;

[0068] Specifically: the feeding assembly includes a base 29, on which a feeding barrel 30 is fixedly arranged, on which a feeding port 32 is arranged, and the feeding port 32 is fixedly connected to the ventilation hood 1, and a discharge port 33 is arranged on the feeding barrel 30. A rotating shaft 34 is rotatably installed on the feeding barrel 30, and a motor 31 is connected with bolts and nuts on the feeding barrel 30, and the output end of the motor 31 is transmission-connected with the rotating shaft 34, and a auger 35 is welded on the part of the rotating shaft 34 located in the feeding barrel 30. The rotating shaft 34 is driven to rotate by starting the motor, and the rotating shaft 34 drives the auger to rotate, and the slag entering from the feeding port 32 is transported to the discharge port 33 through the auger 35.

[0069] The working principle of the utility model is as follows: the fan is started, and the gas in the installation cylinder 7 enters the gas delivery channel 11 through the air suction hood 12, and then enters the exhaust pipe 14 through the gas delivery channel 11, and is discharged through the exhaust pipe 14, so that the gas in the first guide cylinder rises and is discharged through the exhaust pipe 14, the air pressure in the first guide cylinder is reduced, and the external gas enters the guide cavity 5 through the ventilation hole 2, and then flows downward along the guide cavity 5, and enters the first guide cylinder through the bottom of the first guide cylinder 4;

[0070] The receiving hopper 8 receives the high-temperature slag discharged from the boiler, and guides the slag falling into the installation tube 7 to the center through the second guide tube 9;

[0071] The driving motor is started to rotate the first gear 22 through the second rotating shaft 20, the first gear 22 rotates the first rotating shaft 24 through the second gear 25, and the splitter hood 28 is rotated through the first rotating shaft 24 to disperse the slag falling on the splitter hood 28;

[0072] The dispersed slag falls through the gap between the first guide tube 4 and the splitter hood 28 and exchanges heat with the rising cold air.

[0073] In the description of the present utility model, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0074] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A slag dryer for treating bottom slag of a coal-fired boiler, comprising a ventilation hood (1), wherein the ventilation hood (1) is provided with ventilation holes (2), and wherein: A first guide tube (4) is fixedly arranged in the ventilation hood (1), a mounting tube (7) is fixedly arranged on the ventilation hood (1), a second guide tube (9) is arranged in the mounting tube (7), the first guide tube (4) corresponds to the second guide tube (9), an exhaust mechanism is installed between the mounting tube (7) and the second guide tube (9), and the exhaust mechanism is activated to allow external air to enter from the bottom of the first guide tube (4) through the ventilation hole (2) to quickly cool down the material falling from the second guide tube (9).

2. A slag dryer for treating bottom slag of a coal-fired boiler according to claim 1, characterized in that: The ventilation hood (1) and the upper end of the first guide tube (4) are connected and fixed via a first sealing plate (3); a guide cavity (5) is formed between the ventilation hood (1) and the first guide tube (4); and the ventilation hole (2) is in communication with the guide cavity (5).

3. A slag dryer for treating bottom slag of a coal-fired boiler according to claim 2, characterized in that: The upper end of the second flow guide tube (9) is fixedly connected to the mounting tube (7), and the material in the mounting tube (7) is guided toward the center by the second flow guide tube (9). An installation cavity is formed between the second flow guide tube (9) and the mounting tube (7), and the air extraction mechanism is installed in the installation cavity.

4. A slag dryer for treating bottom slag of a coal-fired boiler according to claim 3, characterized in that: The air extraction mechanism comprises an air delivery channel (11) fixedly mounted in the mounting cylinder (7), the air delivery channel (11) being connected to an air suction hood (12), an exhaust pipe (14) being arranged in the mounting cylinder (7) and being connected to the air delivery channel (11), and a first driving component (15) being arranged on the exhaust pipe (14), and when the first driving component (15) is activated, the gas in the mounting cylinder (7) enters from the air suction hood (12) and is discharged through the exhaust pipe (14).

5. A slag dryer for treating bottom slag of a coal-fired boiler according to claim 4, characterized in that: There are a plurality of air suction hoods (12), and the plurality of air suction hoods (12) are evenly distributed along the circumference of the air delivery channel (11).

6. A slag dryer for treating bottom slag of a coal-fired boiler according to claim 5, characterized in that: A liquid infusion pipeline (17) is installed in the installation cylinder (7), and a plurality of spray nozzles (18) are connected to the liquid infusion pipeline (17). A liquid inlet pipe (19) connected to the liquid infusion pipeline (17) is provided on the installation cylinder (7), and the liquid infusion pipeline (17) corresponds to the gas transmission channel (11). Liquid enters the liquid infusion pipeline (17) through the liquid inlet pipe (19) and is sprayed out through the spray nozzles (18) to purify the discharged gas.

7. The dry slag machine for treating bottom slag of a coal-fired boiler according to claim 1, characterized in that: A flow divider (28) is rotatably mounted in the first flow guide cylinder (4), the flow divider (28) corresponding to the second flow guide cylinder (9), a second driving component (21) is provided on the ventilation hood (1), the second driving component (21) and the flow divider (28) are connected to each other via a transmission mechanism, and the second driving component (21) is started to drive the flow divider (28) to rotate, so that materials falling on the flow divider (28) are dispersed and then fall through a gap between the first flow guide cylinder (4) and the flow divider (28).

8. A slag dryer for treating bottom slag of a coal-fired boiler according to claim 7, characterized in that: The transmission mechanism comprises a first rotating shaft (24) rotatably mounted in a first guide cylinder (4), the first rotating shaft (24) being fixedly connected to a flow divider (28), a second rotating shaft (20) being rotatably mounted on the ventilation hood (1), the second driving component (21) being transmission-connected to the second rotating shaft (20), and the second rotating shaft (20) being transmission-connected to the first rotating shaft (24).

9. A slag dryer for treating bottom slag of a coal-fired boiler according to claim 7, characterized in that: A scraper (27) is rotatably mounted in the first guide tube (4); the scraper (27) is fixedly connected to the diverter hood (28) via a connecting rod (26); the diverter hood (28) drives the scraper (27) to clean the material adhering to the inner wall of the first guide tube (4).

10. The dry slag machine for treating bottom slag of a coal-fired boiler according to claim 1, characterized in that: The lower end of the ventilation hood (1) is connected to a material conveying assembly for conveying materials, and the material falling into the ventilation hood (1) is conveyed by the material conveying assembly.

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