Rotary kiln flue gas waste heat recovery device capable of preventing smoke particle blockage

Abstract

The invention discloses a rotary kiln flue gas waste heat recovery device capable of preventing smoke particle blockage, and relates to the technical field of flue gas waste heat recovery, the rotary kiln flue gas waste heat recovery device comprises a flue gas treatment mechanism and a fan mounted on one side of the interior of the flue gas treatment mechanism, and a waste heat recovery mechanism is arranged on one side of the flue gas treatment mechanism; a cleaning motor is arranged at the top of the waste heat recovery mechanism, the flue gas treatment mechanism comprises a flue gas filtering pipe, a plurality of rotating discs are arranged in the flue gas filtering pipe, a plurality of mounting sliding grooves are formed in the rotating discs, and the rotating discs are symmetrically arranged on the two sides of the interior of the flue gas filtering pipe; the two rotating discs are arranged up and down in a step shape, fixing holes are symmetrically formed in the ends, close to the mounting sliding grooves, of the rotating discs, and by arranging the flue gas treatment mechanism, flue gas in a flue gas filtering pipe can be pretreated through a filtering net plate, meanwhile, rotation of the whole rotating discs can be achieved, impurities on the filtering net plate are thrown onto a cleaning plate, and therefore the flue gas treatment efficiency is improved. And the filter screen plate is preliminarily cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas waste heat recovery, and in particular to a rotary kiln flue gas waste heat recovery device which is resistant to clogging by smoke dust particles. Background Art

[0002] In many industries such as building materials, metallurgy, chemical industry, and environmental protection, rotary kiln equipment is widely used to perform mechanical, physical or chemical treatment on solid materials. This type of equipment is called a rotary kiln. The rotary kiln mainly includes a rotary kiln body, and a kiln head and a kiln tail fixedly installed at both ends of the rotary kiln body along its length. During the calcination of materials, the rotary kiln generates high-temperature flue gas at the kiln tail. The high-temperature flue gas exchanges heat with the material in the preheater through the vertical preheater installed at the tail of the rotary kiln. There is still a large amount of heat energy in the flue gas. In order to make full use of the waste heat of the flue gas and further reduce the flue gas temperature, it is necessary to add a flue gas waste heat recovery device to save energy.

[0003] Announcement No. CN 209181543 U discloses a waste heat recovery device for flue gas of a magnesium ore calcining rotary kiln. The motor drives the rotation of the worm, and the lifting ring slides up and down on the outer wall of the heat pipe through the worm gear and the connecting rod, so as to control the scraping ring to scrape the scale on the outer wall of the heat pipe to avoid excessive scale affecting the efficiency of waste heat recovery. The internal spring is set to make the distance between the scraping ring and the lifting ring adjustable, which is not easy to damage the heat pipe. The spiral setting of the heat pipe increases the time that the flue gas is located inside the water tank, improves the heat conduction efficiency, and the paddle increases the resistance with the water, which facilitates the scraping process. The water is stirred to maintain uniform heating. When the lifting ring moves up and down on the outer wall of the heat pipe, the scraper also moves up and down around the heat pipe to scrape the scale off the inner wall of the water tank, reducing the number of times the scale of the water tank is cleaned, saving labor costs. The inner rod can be extended and retracted inside the outer rod, and the contact between the scraper and the water tank is ensured by the reset spring to avoid hard contact with the water tank. The setting of the sleeve and the slide rod allows the scraper to move slightly with the outer rod, which is convenient for fully cleaning the inside of the water tank. However, the patent still has the following problems in actual use: Although the waste heat recovery device for flue gas of the magnesium ore calcining rotary kiln cleans the scale on the outer surface of the heat pipe by setting a scraper ring, the heat pipe is spiral-shaped, and the scraper ring cannot fit well to the outer surface of the heat pipe during the lifting and lowering movement, thereby affecting the cleaning effect of the heat pipe. At the same time, the waste heat recovery device for flue gas of the magnesium ore calcining rotary kiln does not process the impurities and particulate matter in the flue gas, resulting in the impurities and particulate matter in the flue gas adhering to the inner wall of the heat pipe. As the impurities and particulate matter accumulate, not only the fluidity of the flue gas in the heat pipe is affected, but also the heat conduction effect of the heat pipe is affected, thereby affecting the use effect of the waste heat recovery device.

[0004] Therefore, a rotary kiln flue gas waste heat recovery device that is resistant to clogging by smoke and dust particles is proposed to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a rotary kiln flue gas waste heat recovery device that is resistant to clogging by smoke and dust particles, so as to solve the problem that although the magnesium ore calcining rotary kiln flue gas waste heat recovery device proposed in the above-mentioned background technology cleans the scale on the outer surface of the heat pipe by setting a scraper ring, due to the spiral shape of the heat pipe, the scraper ring cannot fit the outer surface of the heat pipe well during the lifting and lowering movement, thereby affecting the cleaning effect of the heat pipe. At the same time, the magnesium ore calcining rotary kiln flue gas waste heat recovery device does not process impurities and particulate matter in the flue gas, resulting in impurities and particulate matter in the flue gas adhering to the inner wall of the heat pipe. As the impurities and particulate matter accumulate, not only the fluidity of the flue gas in the heat pipe is affected, but also the heat conduction effect of the heat pipe is affected, thereby affecting the use effect of the waste heat recovery device.

[0006] To achieve the above object, the present invention provides the following technical solution: a rotary kiln flue gas waste heat recovery device that prevents smoke and dust particles from clogging, comprising a flue gas treatment mechanism, and a fan installed on one side of the inside of the flue gas treatment mechanism; A waste heat recovery mechanism is provided on one side of the flue gas treatment mechanism, and a cleaning motor is provided on the top of the waste heat recovery mechanism; Also includes: The smoke treatment mechanism comprises a smoke filter tube, a plurality of rotating disks are arranged inside the smoke filter tube, and a plurality of installation slide grooves are opened inside the rotating disk; The rotating disks are symmetrically arranged on both sides of the interior of the smoke filter tube, and the two rotating disks are arranged up and down in a stepped manner; Among them, fixing holes are symmetrically opened at the end of the rotating disk close to the installation slide groove, and the inside of the installation slide groove is slidably connected with a filter screen plate.

[0007] Preferably, a support plate is fixedly installed on the outer side of the filter screen plate, fixed blocks are symmetrically installed at both ends of the support plate, a fixed spring is fixedly installed on the outer side of the fixed block, a fixed slider is fixedly connected to the end of the fixed spring, a fixed protrusion is fixedly installed on the end of the fixed slider, and an unlocking sliding frame is fixedly installed on the outer sides of the two fixed sliders.

[0008] Preferably, a plurality of limit plates are fixedly installed on the inner side of the bottom of the smoke filter tube, a plurality of bottom hinges are symmetrically installed on the bottom of the smoke filter tube, a cleaning plate is fixedly installed on one side of the bottom hinge, and an inclined wind plate is fixedly installed on one side of the top of the cleaning plate.

[0009] Preferably, a plurality of top hinges are symmetrically installed on the top of the smoke filter tube, a sealing cover is fixedly connected to one side of the top hinge, the sealing cover is snap-connected to the smoke filter tube, a bellows is fixedly installed on one side of the smoke filter tube, and the fan is fixedly installed inside the bellows.

[0010] Preferably, a conveying pipe is fixedly connected to the bottom of the smoke filter tube, a through hole is opened in the conveying pipe near the bottom of the cleaning plate, a discharge pipe is fixedly installed on one side of the bottom of the conveying pipe, a discharge motor is fixedly installed on one side of the middle of the conveying pipe, the output end of the discharge motor is fixedly connected to a discharge rotating rod, and a spiral blade is fixedly installed on the outer side of the discharge rotating rod.

[0011] Preferably, the waste heat recovery mechanism includes a heating water tank, the cleaning motor is fixedly installed at the top center position of the heating water tank, the output end of the cleaning motor is fixedly connected to a cleaning threaded rod, a spiral groove is opened inside the heating water tank, and the middle part of the cleaning threaded rod is threadedly connected to a cleaning threaded sleeve.

[0012] Preferably, a cleaning connecting rod is fixedly connected to one side of the cleaning threaded sleeve, a cleaning fixing ring is fixedly connected to the end of the cleaning connecting rod, an annular groove is provided inside the cleaning fixing ring, a universal rotating ball is slidably connected inside the annular groove, and the universal rotating ball is symmetrically arranged at the top and bottom of the annular groove.

[0013] Preferably, a cleaning rotating ring is fixedly connected between the two universal rotating balls, a plurality of cleaning springs are fixedly installed inside the cleaning rotating ring, a cleaning scraper is fixedly connected to the end of the cleaning spring, the two cleaning springs are staggered, a cleaning scraper is fixedly installed on the outer side of the cleaning fixed ring, a spiral limit block is fixedly installed at the outer center position of the cleaning scraper, the spiral limit block is slidably connected to the heating water tank through a spiral slide groove, and the cleaning scraper is fit-connected to the inside of the heating water tank.

[0014] Preferably, an air inlet pipe is fixedly installed on the top left side of the heating water tank, an exhaust pipe is fixedly installed on the bottom left side of the heating water tank, a spiral heating pipe is fixedly connected between the air inlet pipe and the exhaust pipe, an inlet valve is fixedly installed on one side of the top of the heating water tank, and a drain valve is fixedly installed on one side of the bottom of the heating water tank.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the smoke waste heat recovery device for the rotary kiln which is prevented from being blocked by smoke dust particles can not only pre-treat the smoke inside the smoke filter tube by using the filter screen plate, but also realize the rotation of the entire rotating disk, and throw the impurities on the filter screen plate onto the cleaning plate. By arranging the waste heat recovery mechanism, the smoke can not only be introduced into the interior of the spiral heating tube by using the air inlet pipe to heat the water inside the heating water tank, but also the cleaning threaded rod can be driven to rotate by the cleaning motor. Since the universal rotating ball can slide and rotate freely inside the annular slide groove, the free rotation of the cleaning rotating ring can be realized, so that the cleaning scraper is always in contact with the surface of the spiral heating tube, and the scale on the surface of the spiral heating tube is cleaned. The specific contents are as follows: 1. By setting up the flue gas treatment mechanism, not only can the filter screen be used to pre-treat the flue gas inside the flue gas filter tube, but also the dust and particulate impurities in the flue gas can be preliminarily filtered to prevent the dust and particulate impurities from adhering to the inside of the spiral heating tube, thereby affecting the heating effect of the spiral heating tube. By setting up a rotating disk, the rotation of multiple filter screens can be realized. When one of the filter screens is blocked, it can drive the entire rotating disk to rotate, which can not only use multiple filter screens for filtering, but also throw the impurities on the filter screen onto the cleaning plate, thereby preliminarily cleaning the filter screen. The two sets of rotating disks and filter screens are staggered. The arrangement can not only ensure the smooth passage of smoke but also filter the dust and particulate impurities in the smoke, thereby improving the smoke filtering effect. When the dust and particulate impurities on the cleaning plate accumulate to a certain weight, the cleaning plate will rotate under the action of the bottom hinge, and the impurities will be dumped into the inside of the conveying pipe. The discharging motor is started to drive the discharging rotating rod and the spiral blade to rotate, and the dust and particulate impurities are discharged from the discharging pipe. When the circulation effect of the smoke is poor, the sealing cover is opened and the unlocking sliding frame is pulled to squeeze the fixing spring. When the fixing protrusion is separated from the fixing hole, the filter screen plate can be replaced, thereby improving the treatment effect of the smoke treatment mechanism; 2. By setting up the waste heat recovery mechanism, not only can the air inlet pipe be used to introduce the flue gas into the interior of the spiral heating tube to heat the water inside the heating water tank, thereby realizing the effect of waste heat recovery and utilization, but also the cleaning motor can be used to drive the cleaning threaded rod to rotate. Under the limiting effect of the spiral slide groove, the cleaning threaded sleeve drives the cleaning connecting rod and the cleaning fixed ring to move spirally up and down. Since the universal rotating ball can slide and rotate freely inside the annular slide groove, the free rotation of the cleaning rotating ring can be realized. Therefore, under the elastic force of the cleaning spring, the cleaning scraper is always in contact with the surface of the spiral heating tube, and the scale on the surface of the spiral heating tube is cleaned, thereby improving the thermal conductivity of the spiral heating tube. At the same time, the cleaning scraper can clean the scale on the inner wall of the heating water tank, and water replacement can be realized through the water inlet valve and the drain valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the flue gas treatment mechanism in the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the cross section of the smoke filter tube in the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the rotating disk in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the filter screen plate and the support plate in the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the unlocking sliding frame in the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the cross section of the delivery pipe in the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the waste heat recovery mechanism in the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the cleaning fixed ring in the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the cleaning rotating ring in the present invention.

[0017] In the figure: 1. Smoke treatment mechanism; 101. Smoke filter tube; 102. Rotating plate; 103. Mounting slide; 104. Fixing hole; 105. Filter screen; 106. Support plate; 107. Fixing block; 108. Fixing spring; 109. Fixing slide block; 110. Fixing protrusion; 111. Unlocking slide frame; 112. Limiting plate; 113. Bottom hinge; 114. Cleaning plate; 115. Inclined air plate; 116. Top hinge; 117. Sealing cover; 118. Bellows; 119. Fan; 120. Delivery pipe; 121. Through hole; 122. Discharge pipe; 123. Discharge electric machine; 124, discharging rotating rod; 125, spiral blade; 2, waste heat recovery mechanism; 201, heating water tank; 202, cleaning motor; 203, cleaning threaded rod; 204, spiral slide; 205, cleaning threaded sleeve; 206, cleaning connecting rod; 207, cleaning fixing ring; 208, annular slide; 209, universal rotating ball; 210, cleaning rotating ring; 211, cleaning spring; 212, cleaning scraper; 213, cleaning scraper; 214, spiral limit block; 215, air inlet pipe; 216, exhaust pipe; 217, spiral heating pipe; 218, water inlet valve; 219, drain valve. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 10 The present invention provides a technical solution: a rotary kiln flue gas waste heat recovery device that prevents smoke and dust particles from clogging, comprising a flue gas treatment mechanism 1, and a fan 119 installed on one side of the flue gas treatment mechanism 1, a waste heat recovery mechanism 2 is arranged on one side of the flue gas treatment mechanism 1, and a cleaning motor 202 is arranged on the top of the waste heat recovery mechanism 2, the flue gas treatment mechanism 1 comprises a flue gas filter tube 101, a plurality of rotating disks 102 are arranged inside the flue gas filter tube 101, and a plurality of mounting slide grooves 103 are opened inside the rotating disk 102, wherein the rotating disk 102 are symmetrically arranged on both sides of the interior of the smoke filter tube 101, and the two rotating disks 102 are arranged up and down in a stepped shape, wherein the rotating disk 102 is symmetrically provided with fixing holes 104 at the end near the installation slide groove 103, and the interior of the installation slide groove 103 is slidably connected with a filter screen plate 105, and a support plate 106 is fixedly installed on the outside of the filter screen plate 105, and fixing blocks 107 are symmetrically installed at both ends of the support plate 106, and a fixing spring 108 is fixedly installed on the outside of the fixing block 107, and the end of the fixing spring 108 is fixedly connected with a fixing slide The end of the fixed slider 109 is fixedly installed with a fixed protrusion 110, and the outer side of the two fixed sliders 109 is fixedly installed with an unlocking sliding frame 111. By setting the smoke treatment mechanism 1, not only can the filter screen plate 105 be used to pre-treat the smoke inside the smoke filter tube 101, but also the dust and particulate impurities in the smoke can be preliminarily filtered to prevent the dust and particulate impurities from adhering to the inside of the spiral heating tube 217, thereby affecting the heating effect of the spiral heating tube 217. By setting the rotating disk 102, multiple The filter plates 105 rotate. When one of the filter plates 105 is blocked, the entire rotating disk 102 can be driven to rotate, so that not only can multiple filter plates 105 be used for filtering, but also impurities on the filter plates 105 can be thrown onto the cleaning plate 114, so as to perform preliminary cleaning of the filter plates 105. The two sets of rotating disks 102 and the filter plates 105 are staggered, which can not only ensure the smooth passage of smoke, but also filter dust and particulate impurities in the smoke, thereby improving the smoke filtration effect.

[0020] A plurality of limit plates 112 are fixedly installed on the inner side of the bottom of the smoke filter tube 101, a plurality of bottom hinges 113 are symmetrically installed on the bottom of the smoke filter tube 101, a cleaning plate 114 is fixedly installed on one side of the bottom hinge 113, an inclined wind plate 115 is fixedly installed on one side of the top of the cleaning plate 114, a plurality of top hinges 116 are symmetrically installed on the top of the smoke filter tube 101, a sealing cover 117 is fixedly connected to one side of the top hinge 116, the sealing cover 117 is snap-connected with the smoke filter tube 101, a bellows 118 is fixedly installed on one side of the smoke filter tube 101, a fan 119 is fixedly installed inside the bellows 118, a conveying pipe 120 is fixedly connected to the bottom of the smoke filter tube 101, a through hole 121 is opened at the bottom of the conveying pipe 120 near the cleaning plate 114, a discharge pipe 122 is fixedly installed on one side of the bottom of the conveying pipe 120, A discharge motor 123 is fixedly installed on one side of the middle part of the conveying pipe 120, and a discharge rotating rod 124 is fixedly connected to the output end of the discharge motor 123, and a spiral blade 125 is fixedly installed on the outer side of the discharge rotating rod 124. When the dust and particulate impurities on the cleaning plate 114 accumulate to a certain weight, the cleaning plate 114 will rotate under the action of the bottom hinge 113, and the impurities will be dumped into the interior of the conveying pipe 120. The discharge motor 123 is started to drive the discharge rotating rod 124 and the spiral blade 125 to rotate, and the dust and particulate impurities are discharged from the discharge pipe 122. When the circulation effect of the flue gas is poor, the sealing cover 117 is opened and the unlocking sliding frame 111 is pulled to squeeze the fixed spring 108. When the fixed protrusion 110 is separated from the fixed hole 104, the filter plate 105 can be replaced, thereby improving the treatment effect of the flue gas treatment mechanism 1.

[0021] The waste heat recovery mechanism 2 includes a heating water tank 201, a cleaning motor 202 fixedly installed at the top center of the heating water tank 201, an output end of the cleaning motor 202 fixedly connected with a cleaning threaded rod 203, a spiral groove 204 is provided inside the heating water tank 201, a cleaning threaded sleeve 205 is threadedly connected to the middle of the cleaning threaded rod 203, a cleaning connecting rod 206 is fixedly connected to one side of the cleaning threaded sleeve 205, a cleaning connecting rod 206 is fixedly connected to the end of the cleaning connecting rod 206 with a cleaning fixed ring 207, an annular groove 208 is provided inside the cleaning fixed ring 207, a universal rotating ball 209 is slidably connected to the inside of the annular groove 208, and the universal rotating ball 209 is connected to the A cleaning rotating ring 210 is fixedly connected between the two universal rotating balls 209, and a plurality of cleaning springs 211 are fixedly installed inside the cleaning rotating ring 210. The ends of the cleaning springs 211 are fixedly connected with cleaning blades 212. The two cleaning springs 211 are staggered. A cleaning scraper 213 is fixedly installed on the outer side of the cleaning fixed ring 207. A spiral limit block 214 is fixedly installed at the outer center position of the cleaning scraper 213. The spiral limit block 214 is slidably connected to the heating water tank 201 through the spiral chute 204. The cleaning scraper 213 is fitted and connected to the inside of the heating water tank 201. An air inlet pipe 215 is fixedly installed on the top of the left side, an exhaust pipe 216 is fixedly installed on the bottom of the left side of the heating water tank 201, a spiral heating pipe 217 is fixedly connected between the air inlet pipe 215 and the exhaust pipe 216, a water inlet valve 218 is fixedly installed on the top side of the heating water tank 201, and a drain valve 219 is fixedly installed on the bottom side of the heating water tank 201. By setting up the waste heat recovery mechanism 2, not only can the air inlet pipe 215 be used to guide the flue gas into the interior of the spiral heating pipe 217 to heat the water inside the heating water tank 201, thereby realizing the effect of waste heat recovery and utilization, but at the same time, the cleaning motor 202 drives the cleaning threaded rod 203 to rotate, and the spiral slide groove 204 Under the limiting effect, the cleaning threaded sleeve 205 drives the cleaning connecting rod 206 and the cleaning fixed ring 207 to move spirally up and down. Since the universal rotating ball 209 can slide and rotate freely inside the annular slide groove 208, the free rotation of the cleaning rotating ring 210 can be realized. Therefore, under the elastic force of the cleaning spring 211, the cleaning scraper 212 is always in contact with the surface of the spiral heating tube 217, and the scale on the surface of the spiral heating tube 217 is cleaned, thereby improving the thermal conductivity of the spiral heating tube 217. At the same time, the cleaning scraper 213 can clean the scale on the inner wall of the heating water tank 201, and water replacement can be achieved through the water inlet valve 218 and the drain valve 219.

[0022] Working principle: Before using this kind of rotary kiln flue gas waste heat recovery device that prevents smoke and dust particles from clogging, it is necessary to first check the overall condition of the device to ensure that it can work normally. Figure 1 - Fig.10As shown, first, water to be heated is put into the heating water tank 201 through the water inlet valve 218, and the smoke is pre-treated through the smoke filter tube 101. A plurality of filter screens 105 can be installed through the rotating disk 102, and the filter screens 105 are used to filter the smoke. When one of the filter screens 105 is blocked, the entire rotating disk 102 can be driven to rotate, which can not only utilize the plurality of filter screens 105 for filtering, but also throw the impurities on the filter screens 105 onto the cleaning plate 114, so as to perform preliminary cleaning of the filter screens 105. The moving disk 102 and the filter screen plate 105 are staggered, which can not only ensure the smooth passage of smoke but also filter the dust and particulate impurities in the smoke, thereby improving the smoke filtering effect. Secondly, when the dust and particulate impurities on the cleaning plate 114 accumulate to a certain weight, the cleaning plate 114 will rotate under the action of the bottom hinge 113, and the impurities will be dumped into the inside of the conveying pipe 120. The discharge motor 123 is started to drive the discharge rotating rod 124 and the spiral blade 125 to rotate, and the dust and particulate impurities are discharged from the discharge pipe 122. When the circulation effect of the smoke is poor, the By opening the sealing cover 117 and pulling the unlocking sliding frame 111 to squeeze the fixing spring 108, when the fixing protrusion 110 is separated from the fixing hole 104, the filter screen 105 can be replaced, thereby improving the treatment effect of the smoke treatment mechanism 1. Finally, the smoke is introduced into the spiral heating tube 217 by the air inlet pipe 215 to heat the water in the heating water tank 201, thereby realizing the effect of waste heat recovery. At the same time, the cleaning motor 202 drives the cleaning threaded rod 203 to rotate. Under the limiting effect of the spiral slide groove 204, the cleaning threaded sleeve 205 drives the cleaning connecting rod 20 6 and the cleaning fixed ring 207 are spirally lifted and lowered. Since the universal rotating ball 209 can slide and rotate freely inside the annular slide groove 208, the free rotation of the cleaning rotating ring 210 can be realized. Therefore, under the elastic force of the cleaning spring 211, the cleaning scraper 212 is always in contact with the surface of the spiral heating tube 217, and the scale on the surface of the spiral heating tube 217 is cleaned, thereby improving the thermal conductivity of the spiral heating tube 217. At the same time, the cleaning scraper 213 can clean the scale on the inner wall of the heating water tank 201, and water replacement can be realized through the water inlet valve 218 and the drain valve 219.

[0023] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. 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 rotary kiln flue gas waste heat recovery device that prevents smoke and dust particle clogging, comprising a flue gas treatment mechanism (1), and a fan (119) installed on one side of the inside of the flue gas treatment mechanism (1); A waste heat recovery mechanism (2) is provided on one side of the flue gas treatment mechanism (1), and a cleaning motor (202) is provided on the top of the waste heat recovery mechanism (2); It is characterized in that Also includes: The smoke treatment mechanism (1) comprises a smoke filter tube (101), a plurality of rotating disks (102) are arranged inside the smoke filter tube (101), and a plurality of installation slide grooves (103) are opened inside the rotating disk (102); The rotating disks (102) are symmetrically arranged on both sides of the interior of the smoke filter tube (101), and the two rotating disks (102) are arranged up and down in a stepped manner; The rotating disk (102) is symmetrically provided with fixing holes (104) at the end thereof close to the mounting slide groove (103), and a filter screen plate (105) is slidably connected inside the mounting slide groove (103).

2. The rotary kiln flue gas waste heat recovery device for preventing smoke and dust particle blockage according to claim 1, characterized in that: A support plate (106) is fixedly mounted on the outer side of the filter screen plate (105), fixed blocks (107) are symmetrically mounted on both ends of the support plate (106), a fixed spring (108) is fixedly mounted on the outer side of the fixed block (107), an end of the fixed spring (108) is fixedly connected to a fixed slider (109), a fixed protrusion (110) is fixedly mounted on the end of the fixed slider (109), and an unlocking sliding frame (111) is fixedly mounted on the outer sides of the two fixed sliders (109).

3. The rotary kiln flue gas waste heat recovery device for preventing smoke and dust particle blockage according to claim 2 is characterized in that: A plurality of limit plates (112) are fixedly mounted on the inner side of the bottom of the smoke filter tube (101); a plurality of bottom hinges (113) are symmetrically mounted on the bottom of the smoke filter tube (101); a cleaning plate (114) is fixedly mounted on one side of the bottom hinge (113); and an inclined air plate (115) is fixedly mounted on one side of the top of the cleaning plate (114).

4. The rotary kiln flue gas waste heat recovery device for preventing smoke and dust particle blockage according to claim 3 is characterized in that: A plurality of top hinges (116) are symmetrically mounted on the top of the smoke filter tube (101); a sealing cover (117) is fixedly connected to one side of the top hinge (116); the sealing cover (117) is snap-connected to the smoke filter tube (101); a bellows (118) is fixedly mounted on one side of the smoke filter tube (101); and the fan (119) is fixedly mounted inside the bellows (118).

5. The device for recovering waste heat from flue gas from a rotary kiln according to claim 4, which is characterized by: A delivery pipe (120) is fixedly connected to the bottom of the smoke filter pipe (101); a through hole (121) is provided at the bottom of the delivery pipe (120) near the cleaning plate (114); a discharge pipe (122) is fixedly mounted on one side of the bottom of the delivery pipe (120); a discharge motor (123) is fixedly mounted on one side of the middle of the delivery pipe (120); a discharge rotating rod (124) is fixedly connected to the output end of the discharge motor (123); and a spiral blade (125) is fixedly mounted on the outer side of the discharge rotating rod (124).

6. The device for recovering waste heat from flue gas from a rotary kiln according to claim 1, which is characterized by: The waste heat recovery mechanism (2) comprises a heating water tank (201), the cleaning motor (202) is fixedly mounted at the top center of the heating water tank (201), the output end of the cleaning motor (202) is fixedly connected to a cleaning threaded rod (203), a spiral groove (204) is provided inside the heating water tank (201), and a cleaning threaded sleeve (205) is threadedly connected to the middle portion of the cleaning threaded rod (203).

7. The rotary kiln flue gas waste heat recovery device for preventing smoke and dust particle blockage according to claim 6, characterized in that: A cleaning connecting rod (206) is fixedly connected to one side of the cleaning threaded sleeve (205), a cleaning fixing ring (207) is fixedly connected to the end of the cleaning connecting rod (206), an annular slide groove (208) is provided inside the cleaning fixing ring (207), a universal rotating ball (209) is slidably connected inside the annular slide groove (208), and the universal rotating ball (209) is symmetrically arranged at the top and bottom of the annular slide groove (208).

8. The device for recovering waste heat from flue gas from a rotary kiln according to claim 7, which is characterized by: A cleaning rotating ring (210) is fixedly connected between the two universal rotating balls (209); a plurality of cleaning springs (211) are fixedly installed inside the cleaning rotating ring (210); the ends of the cleaning springs (211) are fixedly connected to cleaning scrapers (212); the two cleaning springs (211) are arranged alternately; a cleaning scraper (213) is fixedly installed on the outside of the cleaning fixed ring (207); a spiral limit block (214) is fixedly installed at the center position of the outside of the cleaning scraper (213); the spiral limit block (214) is slidably connected to the heating water tank (201) via a spiral slide groove (204); and the cleaning scraper (213) is fittedly connected to the inside of the heating water tank (201).

9. The rotary kiln flue gas waste heat recovery device for preventing smoke and dust particle blockage according to claim 8, characterized in that: An air intake pipe (215) is fixedly mounted on the top of the left side of the heating water tank (201), an air exhaust pipe (216) is fixedly mounted on the bottom of the left side of the heating water tank (201), a spiral heating pipe (217) is fixedly connected between the air intake pipe (215) and the air exhaust pipe (216), an inlet valve (218) is fixedly mounted on one side of the top of the heating water tank (201), and a drain valve (219) is fixedly mounted on one side of the bottom of the heating water tank (201).

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