Sludge drying and incineration system for thermal power plants

Abstract

This invention relates to the field of solid waste treatment equipment technology, and discloses a sludge drying and incineration system for thermal power plants, including a drying furnace and an incinerator. A motor is fixedly connected to the bottom of the drying furnace, and a central rod is fixedly connected to the output end of the motor via a coupling. A scraper is fixedly connected to the outer wall of the central rod, and a feeding plate is also fixedly connected to the outer wall of the central rod. A diversion mechanism is provided inside the drying furnace, including an isolation chamber. A baffle is fixedly connected to the outer wall of the isolation chamber, and the outer wall of the baffle is fixedly connected to the inner wall of the drying furnace. An isolation cavity is formed in the inner wall of the isolation chamber. This invention uses a diversion mechanism to divert and dry the sludge, reducing the volume of sludge accumulation during the drying process and preventing blockages caused by sludge buildup. Furthermore, the feeding mechanism circulates and dries the sludge, effectively reducing its moisture content and increasing the drying efficiency of the solid waste treatment equipment.

Description

Technical Field

[0001] This invention relates to the field of solid waste treatment equipment technology, specifically to a sludge drying and incineration system for thermal power plants. Background Technology

[0002] The sludge drying and incineration system for thermal power plants is designed to decompose and mineralize the organic matter and harmful substances in the sludge generated during the operation of thermal power plants, transforming them into chemically stable ash.

[0003] Patent application CN201510034560.3 discloses a sludge drying and incineration system based on a thermal power plant. It includes a sludge drying system and a sludge blending and incineration system. The sludge drying system includes a heating system, a feeding system, a paddle-type sludge dryer, a waste steam treatment system, a waste steam reuse system, and a dried sludge collection and disposal system. The sludge blending and incineration system includes a dried sludge blending system and a dried sludge incineration system.

[0004] However, during the operation of the sludge drying and incineration system in thermal power plants, the high-humidity sludge loses its fluidity in the low-temperature section during the initial drying process, causing material accumulation, blockage, and reduced heat transfer efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a sludge drying and incineration system for thermal power plants to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sludge drying and incineration system for thermal power plants, comprising a drying furnace and an incinerator, wherein a motor is fixedly connected to the bottom of the drying furnace, a central rod is fixedly connected to the output end of the motor via a coupling, a scraper is fixedly connected to the outer wall of the central rod, a feeding plate is fixedly connected to the outer wall of the central rod, and a diversion mechanism is provided inside the drying furnace;

[0007] The diversion mechanism includes an isolation chamber, a baffle plate is fixedly connected to the outer wall of the isolation chamber, the outer wall of the baffle plate is fixedly connected to the inner wall of the drying furnace, an isolation cavity is formed in the inner wall of the isolation chamber, a connecting groove is formed in the inner wall of the isolation chamber, a partition is fixedly connected to the inner wall of the isolation chamber, and a baffle plate is fixedly connected to the surface of the partition plate. The partition plate is an inclined plate used to guide the sludge, and the baffle plate is set at the gap of the connecting groove to divert the sludge.

[0008] According to the above technical solution, the inner wall of the drying furnace is provided with an isolation chamber one. A heating block is fixedly connected to the wall of the isolation chamber one via a support frame. A hot air pipe is fixedly connected to the inner wall of the drying furnace. A feed inlet is fixedly connected to the top of the drying furnace via a flange. An exhaust port is fixedly connected to the outer wall of the drying furnace. An air inlet is fixedly connected to the outer wall of the drying furnace. The outer wall of the central rod is rotatably connected to the inner wall of the isolation chamber via a bearing. The inner wall of the scraper one contacts the outer wall of the isolation chamber and slides along the outer wall of the isolation chamber. The outer wall of the feeding plate contacts the wall of the second isolation chamber. The feeding plate is used to feed sludge.

[0009] According to the above technical solution, the inner wall of the isolation chamber is fixedly connected to an air guide pipe, which is connected to the interior of the drying furnace. The inner wall of the second isolation chamber is fixedly connected to a heat-conducting plate. A buffer chamber is opened in the inner wall of the isolation chamber. A connecting pipe is fixedly connected inside the buffer chamber. The end of the connecting pipe away from the buffer chamber is fixedly connected to the interior of the air guide pipe. A connecting hole is opened in the outer wall of the isolation chamber.

[0010] According to the above technical solution, the inner wall of the drying furnace is fixedly connected with protrusions, and a rolling mechanism is provided at the bottom of the diversion mechanism. The rolling mechanism includes a turntable, the inner wall of the turntable is fixedly connected to the outer wall of the central rod, a support shaft is fixedly connected to the inner wall of the turntable, and a pressure roller is rotatably connected to the outer wall of the support shaft through a rotating shaft. The outer wall of the pressure roller contacts the inner wall of the drying furnace and rolls along the inner wall of the drying furnace by friction. The pressure roller is used to roll the sludge. The inner wall of the turntable is concave and the sludge is guided by a guide groove, so that the sludge flows along the inner wall of the turntable to the feed plate for feeding.

[0011] According to the above technical solution, the outer wall of the pressure roller is provided with a sliding groove, and the inner wall of the sliding groove is provided with a second limiting groove. The outer wall of the crushing block is slidably connected to the second limiting groove wall through a slider. A spring is fixedly connected to the second limiting groove wall, and the other end of the spring is fixedly connected to the outer wall of the crushing block. The outer wall of the crushing block contacts the inner wall of the drying furnace for crushing sludge. The position of the protrusion matches the position of the crushing block. The crushing block rolls along the inner wall of the drying furnace through the pressure roller, and the outer wall of the crushing block contacts the outer wall of the protrusion, squeezing the spring to slide in the sliding groove.

[0012] According to the above technical solution, a circulation groove is provided on the outer wall of the central rod, a limiting groove is provided on the outer wall of the isolation chamber, and an interception mechanism is provided inside the isolation chamber. The interception mechanism includes a sliding sleeve, the inner wall of which is slidably connected to the wall of the circulation groove via a slider, a support rod is fixedly connected to the outer wall of the sliding sleeve, the outer wall of which is slidably connected to the wall of the limiting groove, and the end of which is away from the sliding sleeve is fixedly connected to the inner wall of the baffle. The inner wall of the baffle contacts the outer wall of the isolation chamber and slides along the outer wall of the isolation chamber. A connecting groove is provided on the inner wall of the baffle. The support rod limits the sliding sleeve in the limiting groove. The sliding sleeve is rotated by the central rod, causing the sliding sleeve to reciprocate up and down in the circulation groove via the slider.

[0013] According to the above technical solution, when the sliding sleeve slides in the limiting groove 1 through the support rod, causing the baffle 3 to slide to the top limit of the limiting groove 1, the top of the baffle 3 protrudes from the outer wall of the isolation chamber, which is used to intercept the wet sludge at the top of the isolation chamber. The connecting groove 2 is connected to the connecting groove 1, so that the sludge on the feeding plate to the surface of the partition flows out from the connecting groove 2. When the sliding sleeve slides in the limiting groove 1 through the support rod, causing the baffle 3 to slide to the bottom limit of the limiting groove 1, the top of the baffle 3 is lower than the outer wall of the isolation chamber, so that the sludge at the top of the isolation chamber is diverted through the baffle 1. The connecting groove 2 is misaligned with the connecting groove 1, so that the baffle 3 intercepts the sludge on the feeding plate to the surface of the partition.

[0014] According to the above technical solution, a scraper is fixedly connected to the inner wall of the baffle three. The scraper is inclinedly arranged on the inner wall of the baffle three to guide the sludge and scrape off the sludge in the gap between the sliding trough and the isolation chamber.

[0015] According to the above technical solution, the end of the hot air pipe near the isolation chamber is connected to the inside of the isolation chamber, and the end of the hot air pipe away from the isolation chamber is connected to the inside of the drying furnace. The hot air pipe is used to send hot air from the inside of the isolation chamber into the drying furnace.

[0016] According to the above technical solution, the position of the heat-conducting plate matches the position of the air duct, the position of the connecting hole matches the position of the buffer chamber and communicates with the inside of the buffer chamber, the connecting hole is opened at the gap of the baffle, the air duct is used to intercept the hot air sent into the drying furnace by the hot air pipe, and heat the sludge fed into the second isolation chamber through the feeding plate by the heat-conducting plate, and at the same time the air duct communicates with the inside of the buffer chamber through the connecting pipe, so that the hot air enters the buffer chamber and is discharged to the outer wall of the isolation chamber through the connecting hole to heat the sludge diverted by the baffle.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention uses a diversion mechanism to divert and dry sludge, reducing the volume of sludge accumulation during the drying process and preventing sludge buildup that could cause blockages. It also uses a feeding mechanism to circulate and dry the sludge, effectively reducing its moisture content and increasing the drying efficiency of the solid waste treatment equipment.

[0019] 2. This invention uses a rolling mechanism to roll and mix the sludge, so that the dried sludge and the new sludge are fully mixed, which quickly reduces the moisture content of the wet sludge, increases the drying efficiency of sludge recycling and drying, and at the same time rolls and crushes the dried sludge to prevent the dried sludge from accumulating and agglomerating in the solid waste equipment and causing blockage.

[0020] 3. The present invention uses an interception mechanism to intercept sludge during the sludge diversion process, so that the dried sludge and wet sludge are intercepted and mixed in stages, so that the overall moisture content of the sludge is kept balanced, and the sludge is dried quickly and evenly in the solid waste treatment equipment.

[0021] 4. The present invention delivers hot air from the isolation chamber to the drying furnace through a hot air pipe, which flushes the wet sludge to rapidly heat and dry the sludge, preventing sludge from clumping and effectively improving the drying efficiency of the solid waste treatment equipment in the sludge drying process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 A cross-sectional view of the drying furnace of the present invention. Figure 1 ;

[0024] Figure 3 This is a cross-sectional view of the drying furnace and the diversion mechanism of the present invention. Figure 1 ;

[0025] Figure 4 This is a cross-sectional view of the drying furnace and the diversion mechanism of the present invention. Figure 2 ;

[0026] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0027] Figure 6 A cross-sectional view of the drying furnace of the present invention. Figure 2 ;

[0028] Figure 7 A cross-sectional view of the drying furnace of the present invention. Figure 3 ;

[0029] Figure 8 A cross-sectional view of the diversion mechanism of the present invention. Figure 1 ;

[0030] Figure 9 A cross-sectional view of the diversion mechanism of the present invention. Figure 2 ;

[0031] Figure 10 This is a schematic diagram of the compaction mechanism of the present invention;

[0032] Figure 11 This is a cross-sectional view of the compaction mechanism of the present invention;

[0033] Figure 12 This is a schematic diagram of the interception mechanism of the present invention. Figure 1 ;

[0034] Figure 13 This is a schematic diagram of the interception mechanism of the present invention. Figure 2 .

[0035] In the diagram: 100, Drying furnace; 101, Incinerator; 102, Feed inlet; 103, Exhaust outlet; 104, Motor; 105, Isolation chamber one; 106, Heating block; 107, Hot air pipe; 108, Center rod; 109, Scraper one; 110, Feeding plate; 111, Circulation trough; 112, Protrusion; 113, Air inlet; 200, Diverting mechanism; 201, Isolation chamber; 202, Baffle one; 203, Connecting groove one; 204, Partition; 205, Baffle two; 206 207. Air duct; 208. Heat conduction plate; 209. Buffer chamber; 210. Connecting pipe; 211. Isolation chamber two; 212. Limiting groove one; 213. Connecting hole; 300. Rolling mechanism; 301. Turntable; 302. Support shaft; 303. Pressure roller; 304. Sliding groove; 305. Rolling block; 306. Limiting groove two; 307. Spring; 400. Interception mechanism; 401. Sliding sleeve; 402. Support rod; 403. Baffle three; 404. Scraper two; 405. Connecting groove two. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1, please refer to Figures 1-9 The present invention provides a technical solution: a sludge drying and incineration system for thermal power plants, including a drying furnace 100 and an incinerator 101. A motor 104 is fixedly connected to the bottom of the drying furnace 100. A central rod 108 is fixedly connected to the output end of the motor 104 through a coupling. A scraper 109 is fixedly connected to the outer wall of the central rod 108. A feeding plate 110 is fixedly connected to the outer wall of the central rod 108.

[0038] The drying furnace 100 has an isolation chamber 105 on its inner wall. A heating block 106 is fixedly connected to the wall of the isolation chamber 105 via a support frame. A hot air pipe 107 is fixedly connected to the inner wall of the drying furnace 100. A feed inlet 102 is fixedly connected to the top of the drying furnace 100 via a flange. An exhaust port 103 and an air inlet 113 are fixedly connected to the outer wall of the drying furnace 100. The outer wall of the central rod 108 is rotatably connected to the inner wall of the isolation chamber 201 via a bearing. (The last sentence appears to be incomplete and possibly refers to a scraper.) The inner wall of the first 109 contacts the outer wall of the isolation chamber 201 and slides along the outer wall of the isolation chamber 201. The outer wall of the feeding plate 110 contacts the cavity wall of the second isolation chamber 210. The feeding plate 110 is used to feed sludge. The end of the hot air pipe 107 near the first isolation chamber 105 is connected to the inside of the first isolation chamber 105. The end of the hot air pipe 107 away from the first isolation chamber 105 is connected to the inside of the drying furnace 100. The hot air pipe 107 is used to send the hot air inside the first isolation chamber 105 into the inside of the drying furnace 100.

[0039] The drying furnace 100 is equipped with a flow distribution mechanism 200.

[0040] During the operation of the sludge drying and incineration system in a thermal power plant, high-moisture sludge loses its fluidity in the low-temperature zone during the initial drying process, leading to material accumulation, blockage, and reduced heat transfer efficiency. Therefore, a diversion mechanism 200 is installed to divert and dry the sludge, reducing the accumulation volume of sludge during the drying process and preventing blockage. The sludge is also circulated and dried through feeding, effectively reducing the moisture content of the sludge and increasing the drying efficiency of the solid waste treatment equipment.

[0041] The diversion mechanism 200 includes an isolation chamber 201. A baffle 202 is fixedly connected to the outer wall of the isolation chamber 201, and the outer wall of the baffle 202 is fixedly connected to the inner wall of the drying furnace 100. An isolation cavity 210 is formed in the inner wall of the isolation chamber 201. A connecting groove 203 is formed in the inner wall of the isolation chamber 201. A partition 204 is fixedly connected to the inner wall of the isolation chamber 201. A baffle 205 is fixedly connected to the surface of the partition 204. The partition 204 is an inclined plate used to guide the sludge. The baffle 205 is set at the gap of the connecting groove 203 for diverting the sludge. An air duct 206 is fixedly connected to the inner wall of the isolation chamber 201 and communicates with the interior of the drying furnace 100. A heat-conducting plate 207 is fixedly connected to the inner wall of the isolation cavity 210. A buffer cavity 208 is formed in the inner wall of the isolation chamber 201 and is fixedly connected to a connecting... Connector 209, the end of connector 209 away from buffer chamber 208 is fixedly connected to the inside of air duct 206, the outer wall of isolation chamber 201 is provided with connection hole 212, the position of heat conduction plate 207 matches the position of air duct 206, the position of connection hole 212 matches the position of buffer chamber 208 and is connected to the inside of buffer chamber 208, the connection hole 212 is opened at the gap of baffle 1 202, air duct 206 is used to cut off the hot air sent into the drying furnace 100 by hot air pipe 107, and heat the sludge fed into isolation chamber 222 through feeding plate 110 through heat conduction plate 207, at the same time air duct 206 is connected to the inside of buffer chamber 208 through connector 209, so that hot air enters buffer chamber 208 and is discharged to the outer wall of isolation chamber 201 through connection hole 212 to heat the sludge diverted by baffle 1 202;

[0042] When the sludge drying and incineration system of the thermal power plant is put into operation, wet sludge enters the drying furnace 100 through the feed inlet 102 and accumulates on the top of the isolation chamber 201. The start motor 104 is used as the power source, and drives the central rod 108 to rotate through the coupling, which drives the scraper 109 to guide the sludge from the isolation chamber 201 to the baffle 202. The wet sludge is intercepted by the baffle 202 and undergoes initial diversion. The heating block 106 heats the inside of the drying furnace 100 to dry the sludge. At the same time, the heating block 106 heats the air in the isolation chamber 105. It is connected to the air supply source through the air inlet 113, so that the hot air inside the isolation chamber 105 is generated by the heating block 106 and is then transported through the air supply. Pipe 107 introduces hot air into the drying furnace 100, which diverts the sludge falling through the baffle 202 and performs convective drying. The pre-dried sludge falls to the bottom of the drying furnace 100. The central rod 108 drives the feeding plate 110 to rotate and feed the pre-dried sludge. The pre-dried sludge enters the isolation chamber 210 for feeding, so that the sludge enters the isolation compartment 201 and is fed onto the surface of the partition 204. During the feeding process, part of the hot air entering the drying furnace 100 from the hot air pipe 107 is intercepted and guided by the air guide pipe 206. The heat from the hot air is indirectly conducted and heated by the heat conduction plate 207 to the sludge conveyed upward by the feeding plate 110 in the isolation chamber 210. Simultaneously, the hot air diverted through the air duct 206 enters the buffer chamber 208 through the connecting pipe 209 and is then discharged from the connecting hole 212 to assist in drying the sludge in the flow channel of baffle 1 202. After the sludge is fed onto the surface of the baffle 204, it is guided by the inclined baffle 204 and diverted a second time by the baffle 205 on the surface of the baffle 204. It is then discharged from the connecting groove 203 and mixed with the wet sludge in the flow channel of baffle 1 202. This allows the initially dried sludge to absorb the moisture from the wet sludge, reducing the water content of the wet sludge. After this process, the sludge undergoes secondary drying and falls to the bottom of the drying furnace 100 for another drying cycle until it is completely dried. Finally, the sludge enters the incinerator 101 for incineration.

[0043] Example 2, based on Example 1, please refer to... Figures 10-11 The present invention provides a technical solution: the inner wall of the drying furnace 100 is fixedly connected with protrusions 112, and the bottom of the diversion mechanism 200 is provided with a rolling mechanism 300;

[0044] After preliminary drying, the sludge falls to the bottom of the drying furnace 100 through the baffle 202 flow channel. This area is a low-temperature slow flow zone, which can cause the dried sludge to clump and accumulate, causing blockage. Therefore, a rolling mechanism 300 is set up to roll and stir the sludge, so that the dried sludge is fully mixed with the new sludge, quickly reducing the moisture content of the wet sludge, increasing the drying efficiency of sludge circulation drying, and at the same time rolling and crushing the dried sludge to prevent the dried sludge from accumulating and clumping in the solid waste equipment and causing blockage.

[0045] The compaction mechanism 300 includes a turntable 301. The inner wall of the turntable 301 is fixedly connected to the outer wall of the central rod 108. A support shaft 302 is fixedly connected to the inner wall of the turntable 301. A pressure roller 303 is rotatably connected to the outer wall of the support shaft 302 via a rotating shaft. The outer wall of the pressure roller 303 contacts the inner wall of the drying furnace 100 and rolls along the inner wall of the drying furnace 100 through friction. The pressure roller 303 is used to compact the sludge. The inner wall of the turntable 301 is concave and has a guide groove to guide the sludge, allowing the sludge to flow along the inner wall of the turntable 301 to the material plate 110 for feeding. A sliding groove 304 is provided on the outer wall of the pressure roller 303. The inner wall of the sliding groove 304 is provided with a limiting groove 306. The outer wall of the crushing block 305 is slidably connected to the groove wall of the limiting groove 306 via a slider. A spring 307 is fixedly connected to the groove wall of the limiting groove 306. The other end of the spring 307 is fixedly connected to the outer wall of the crushing block 305. The outer wall of the crushing block 305 contacts the inner wall of the drying furnace 100 for crushing sludge. The position of the protrusion 112 matches the position of the crushing block 305. The crushing block 305 rolls along the inner wall of the drying furnace 100 via the pressure roller 303. The outer wall of the crushing block 305 contacts the outer wall of the protrusion 112 and squeezes the spring 307 to slide in the groove of the sliding groove 304.

[0046] The sludge, heated and preliminarily dried along the flow channel of baffle 202, falls to the bottom of the drying furnace 100 and is guided by the concave inner wall of the turntable 301 to flow onto the feeding plate 110. Simultaneously, the central rod 108 drives the turntable 301 to rotate. The turntable 301, through the support shaft 302, drives the pressure roller 303 to rotate along the inner wall of the drying furnace 100. The pressure roller 303, relying on friction, rolls along the inner wall of the drying furnace 100, crushing and mixing the sludge, thus mixing the dried sludge with the wet sludge. During further mixing, as the pressure roller 303 rolls along the inner wall of the drying furnace 100, the crushing block 305, supported by the spring 307, slides on the inner wall of the sliding groove 304. When the crushing block 305 rolls with the pressure roller 303 to the protrusion 112 on the inner wall of the drying furnace 100 and comes into contact, the crushing block 305 cooperates with the protrusion 112 to crush and pulverize the dried sludge clumps, making the mixing of dried sludge and wet sludge more uniform, improving the drying efficiency of wet sludge and preventing dry sludge from clumping and blocking the flow channel.

[0047] Example 3, based on Examples 1 and 2, please refer to... Figures 12-13 The present invention provides a technical solution: a circulation groove 111 is provided on the outer wall of the central rod 108, a limit groove 211 is provided on the outer wall of the isolation chamber 201, and an interception mechanism 400 is provided inside the isolation chamber 201.

[0048] During the drying process, sludge may exhibit varying degrees of drying, leading to over-drying of dry sludge. Therefore, an interception mechanism 400 is installed to intercept sludge during the sludge diversion process, allowing the dried sludge and wet sludge to be intercepted and mixed in stages, maintaining a balanced overall moisture content of the sludge, and enabling the sludge to dry quickly and evenly in the solid waste treatment equipment.

[0049] The interception mechanism 400 includes a sliding sleeve 401. The inner wall of the sliding sleeve 401 is slidably connected to the wall of the circulation groove 111 via a slider. A support rod 402 is fixedly connected to the outer wall of the sliding sleeve 401. The outer wall of the support rod 402 is slidably connected to the wall of the limiting groove 211. The end of the support rod 402 away from the sliding sleeve 401 is fixedly connected to the inner wall of the baffle 403. The inner wall of the baffle 403 contacts the outer wall of the isolation chamber 201 and slides along the outer wall of the isolation chamber 201. The inner wall of 403 has a connecting groove 405. The support rod 402 limits the sliding sleeve 401 in the limiting groove 211. The sliding sleeve 401 rotates through the central rod 108, causing the sliding sleeve 401 to reciprocate up and down in the circulation groove 111 through the slider. When the sliding sleeve 401 slides in the limiting groove 211 through the support rod 402, it drives the baffle 403 to slide to the top of the limiting groove 211. When the baffle 403 is limited, the top of the baffle 403 protrudes out. The outer wall of the isolation chamber 201 is used to intercept the wet sludge at the top of the isolation chamber 201. The connecting groove 2 405 is connected to the connecting groove 1 203, so that the sludge fed by the feeding plate 110 to the surface of the partition 204 flows out from the connecting groove 2 405. The sliding sleeve 401 slides in the limiting groove 1 211 through the support rod 402, which drives the baffle 3 403 to slide to the bottom limit of the limiting groove 1 211. When the top of the baffle 3 403 is lower than the outer wall of the isolation chamber 201, the sludge is blocked. The sludge at the top of the isolation chamber 201 is diverted by the first baffle 202. The second connecting groove 405 is misaligned with the first connecting groove 203, so that the third baffle 403 intercepts the sludge fed from the feeding plate 110 to the surface of the partition 204. The inner wall of the third baffle 403 is fixedly connected to the second scraper 404. The second scraper 404 is inclinedly set on the inner wall of the third baffle 403 to guide the sludge and scrape off the sludge in the gap between the sliding groove 304 and the isolation chamber 201.

[0050] During the rotation of the central rod 108, the sliding sleeve 401 is driven by the circulation groove 111 and simultaneously limited by the support rod 402 in the limiting groove 211, reciprocating up and down on the outer wall of the central rod 108. This causes the sliding sleeve 401 to drive the baffle 403 to reciprocate up and down on the outer wall of the isolation chamber 201 via the support rod 402. When the baffle 403 moves to the top of the limiting groove 211, the top of the baffle 403 protrudes to intercept the wet sludge at the top of the isolation chamber 201. At the same time, the connecting groove 405 on the inner wall of the baffle 403 connects with the connecting groove 203, allowing the pre-dried sludge to pass through. When the baffle 403 moves to the bottom of the limiting groove 211, the top of the baffle 403 lowers to release the wet sludge, while the connecting groove 405 is misaligned with the connecting groove 203 to intercept the dried sludge. The dry and wet sludge are mixed in stages to make the moisture content of the dry and wet sludge more uniform and stable. At the same time, during the up-and-down reciprocating motion of the baffle 3 403, the scraper 2 404 scrapes away the residual sludge in the gap between the sliding groove 304 and the isolation chamber 201.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sludge drying and incineration system for a thermal power plant, comprising a drying furnace (100) and an incinerator (101), wherein a motor (104) is fixedly connected to the bottom of the drying furnace (100), characterized in that, The output end of the motor (104) is fixedly connected to a central rod (108) via a coupling. A scraper (109) is fixedly connected to the outer wall of the central rod (108). A feeding plate (110) is fixedly connected to the outer wall of the central rod (108). A diversion mechanism (200) is provided inside the drying furnace (100). The diversion mechanism (200) includes; An isolation chamber (201) is provided with a baffle (202) fixedly connected to its outer wall. The outer wall of the baffle (202) is fixedly connected to the inner wall of the drying furnace (100). An isolation cavity (210) is provided on the inner wall of the isolation chamber (201). A connecting groove (203) is provided on the inner wall of the isolation chamber (201). A partition (204) is fixedly connected to the inner wall of the isolation chamber (201). A baffle (205) is fixedly connected to the surface of the partition (204). The partition (204) is an inclined plate used to guide the sludge. The baffle (205) is set at the gap of the connecting groove (203) to divert the sludge. The drying furnace (100) has an isolation chamber one (105) on its inner wall. The wall of the isolation chamber one (105) is fixedly connected to a heating block (106) by a support frame. The inner wall of the drying furnace (100) is fixedly connected to a hot air pipe (107). The top of the drying furnace (100) is fixedly connected to a feed inlet (102) by a flange. The outer wall of the drying furnace (100) is fixedly connected to an exhaust port (103). The outer wall of the drying furnace (100) is fixedly connected to an air inlet (113). The outer wall of the central rod (108) is rotatably connected to the inner wall of the isolation chamber (201) by a bearing. The inner wall of the scraper one (109) contacts the outer wall of the isolation chamber (201) and slides along the outer wall of the isolation chamber (201). The outer wall of the feeding plate (110) contacts the wall of the isolation chamber two (210). The feeding plate (110) is used to feed sludge. An air duct (206) is fixedly connected to the inner wall of the isolation chamber (201), and the air duct (206) is connected to the interior of the drying furnace (100). A heat-conducting plate (207) is fixedly connected to the inner wall of the second isolation chamber (210). A buffer chamber (208) is opened on the inner wall of the isolation chamber (201). A connecting pipe (209) is fixedly connected to the interior of the buffer chamber (208). The end of the connecting pipe (209) away from the buffer chamber (208) is fixedly connected to the interior of the air duct (206). A connecting hole (212) is opened on the outer wall of the isolation chamber (201). The hot air pipe (107) is connected to the interior of the isolation chamber (105) at one end and to the interior of the drying furnace (100) at the other end away from the isolation chamber (105). The hot air pipe (107) is used to send hot air from the isolation chamber (105) into the drying furnace (100). The position of the heat-conducting plate (207) matches the position of the air duct (206), the position of the connecting hole (212) matches the position of the buffer chamber (208), and is connected to the inside of the buffer chamber (208). The connecting hole (212) is opened at the gap of the first baffle (202). The air duct (206) is used to cut off the hot air sent into the drying furnace (100) by the hot air pipe (107), and heat the sludge fed into the second isolation chamber (210) by the feeding plate (110) through the heat-conducting plate (207). At the same time, the air duct (206) is connected to the inside of the buffer chamber (208) through the connecting pipe (209), so that the hot air enters the buffer chamber (208) and is discharged to the outer wall of the isolation chamber (201) through the connecting hole (212) to heat the sludge diverted by the first baffle (202).

2. The sludge drying and incineration system for thermal power plants according to claim 1, characterized in that: The inner wall of the drying furnace (100) is fixedly connected with protrusions (112), and the bottom of the diversion mechanism (200) is provided with a crushing mechanism (300). The crushing mechanism (300) includes a turntable (301). The inner wall of the turntable (301) is fixedly connected to the outer wall of the center rod (108). The inner wall of the turntable (301) is fixedly connected with a support shaft (302). The outer wall of the support shaft (302) is rotatably connected with a pressure roller (303) through a rotating shaft. The outer wall of the pressure roller (303) contacts the inner wall of the drying furnace (100) and rolls along the inner wall of the drying furnace (100) by friction. The pressure roller (303) is used to crush the sludge. The inner wall of the turntable (301) is concave and the sludge is guided by a guide groove, so that the sludge flows along the inner wall of the turntable (301) to the feed plate (110) for feeding.

3. The sludge drying and incineration system for thermal power plants according to claim 2, characterized in that: The outer wall of the pressure roller (303) is provided with a sliding groove (304), and the inner wall of the sliding groove (304) is provided with a limiting groove (306). The outer wall of the crushing block (305) is slidably connected to the groove wall of the limiting groove (306) by a slider. A spring (307) is fixedly connected to the groove wall of the limiting groove (306). The other end of the spring (307) is fixedly connected to the outer wall of the crushing block (305). The outer wall of the crushing block (305) is in contact with the inner wall of the drying furnace (100) for crushing sludge. The position of the protrusion (112) matches the position of the crushing block (305). The crushing block (305) rolls along the inner wall of the drying furnace (100) through the pressure roller (303). The outer wall of the crushing block (305) contacts the outer wall of the protrusion (112) and squeezes the spring (307) to slide in the sliding groove (304).

4. The sludge drying and incineration system for thermal power plants according to claim 3, characterized in that: The outer wall of the central rod (108) is provided with a circulation groove (111), and the outer wall of the isolation chamber (201) is provided with a limiting groove (211). An interception mechanism (400) is provided inside the isolation chamber (201). The interception mechanism (400) includes a sliding sleeve (401). The inner wall of the sliding sleeve (401) is slidably connected to the groove wall of the circulation groove (111) by a slider. A support rod (402) is fixedly connected to the outer wall of the sliding sleeve (401). The outer wall of the support rod (402) is slidably connected to the groove wall of the limiting groove (211). 402) The end away from the sliding sleeve (401) is fixedly connected to the inner wall of the baffle three (403). The inner wall of the baffle three (403) contacts the outer wall of the isolation chamber (201) and slides along the outer wall of the isolation chamber (201). The inner wall of the baffle three (403) is provided with a connecting groove two (405). The support rod (402) limits the sliding sleeve (401) in the limiting groove one (211). The sliding sleeve (401) rotates through the central rod (108) so that the sliding sleeve (401) moves up and down in the circulation groove (111) through the slider.

5. The sludge drying and incineration system for thermal power plants according to claim 4, characterized in that: The sliding sleeve (401) slides within the limiting groove (211) via the support rod (402), causing the baffle (403) to slide to the top of the limiting groove (211). When the baffle (403) is stopped, its top protrudes from the outer wall of the isolation chamber (201) to intercept the wet sludge at the top of the isolation chamber (201). The connecting groove (405) is connected to the connecting groove (203), allowing the sludge fed by the feeding plate (110) to the surface of the partition (204) to flow out from the connecting groove (405). When the sleeve (401) slides in the limiting groove (211) through the support rod (402), it drives the baffle (403) to slide to the bottom limit of the limiting groove (211). When the top of the baffle (403) is lower than the outer wall of the isolation chamber (201), the sludge on the top of the isolation chamber (201) is diverted through the baffle (202). The connecting groove (405) is misaligned with the connecting groove (203), so that the baffle (403) intercepts the sludge fed by the feeding plate (110) to the surface of the partition (204).

6. The sludge drying and incineration system for thermal power plants according to claim 5, characterized in that: The inner wall of the baffle three (403) is fixedly connected to the scraper two (404). The scraper two (404) is inclinedly arranged on the inner wall of the baffle three (403) for guiding the sludge and scraping the sludge in the gap between the sliding groove (304) and the isolation chamber (201).

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