High-temperature waste gas treatment device with heat recovery function

Abstract

The invention relates to the technical field of waste gas treatment, and discloses a high-temperature waste gas treatment device with a heat recovery function, the high-temperature waste gas treatment device comprises a rack and a treatment bin fixedly connected to the left wall of an inner cavity of the rack, the inner wall of the treatment bin is rotatably connected with a toothed ring screen, and the bottom of the treatment bin is fixedly connected with an exhaust pipe; a filter cartridge is inserted into the exhaust pipe in a threaded mode, an L-shaped air inlet pipe with the right end abutting against the toothed ring screen in a sliding and sealing mode is installed in the middle of the treatment bin, and a pressure sensor is installed on the upper wall of an inner cavity of the right end of the air inlet pipe. Waste gas is filtered firstly through the toothed ring screen, and when the toothed ring screen is blocked, the adjusting assembly automatically drives the flow guide plate and the toothed ring screen to deflect and cooperates with vibration cleaning of the scraper blade and back flushing of the toothed ring screen, so that online efficient cleaning of an air inlet filtering part is achieved; the problem of poor filtering and heat exchange effects caused by the fact that a traditional waste gas treatment device firstly exchanges heat and then sprays and filters is solved.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and specifically to a high-temperature waste gas treatment device with heat recovery function. Background Technology

[0002] Waste gas purification mainly refers to the treatment of industrial waste gases generated in industrial sites, such as particulate matter, flue gas, odorous gases, and toxic and harmful gases. Currently, boilers generate high-temperature waste gas during operation, and direct discharge into the outside world will cause waste of resources and air pollution. Therefore, it is necessary to purify it before discharge.

[0003] Utility model patent CN214075699U discloses a waste gas treatment device for the reuse of waste heat from high-temperature exhaust gas, relating to the field of waste gas treatment. It includes a substrate, a heat conversion box fixedly mounted on the upper surface of the substrate, an air inlet pipe fixedly mounted on one side of the heat conversion box, a spiral tube fixedly mounted at one end of the air inlet pipe, a gas delivery pipe fixedly mounted at one end of the spiral tube, and a water inlet pipe fixedly mounted on the upper surface of the heat conversion box. This waste gas treatment device for the reuse of waste heat from high-temperature exhaust gas, through the coordinated use of the heat conversion box, air inlet pipe, spiral tube, gas delivery pipe, water inlet pipe, water delivery pipe, first water pump, and external water pipe, exchanges heat from the high-temperature exhaust gas with external water through the spiral tube, thereby recovering and reusing the heat from the exhaust gas. The resulting hot domestic water is convenient for people to use for washing vegetables and dishes in cold weather, promoting resource reuse.

[0004] In the aforementioned patented waste gas treatment device for high-temperature waste gas heat recovery, the high-temperature waste gas first passes through a spiral tube to heat the water in the tank for heat exchange. Subsequently, the waste gas enters the purification tower, is sprayed and filtered, and then discharged. Due to the lack of pre-filtration, the waste gas will generate swirling flow in the spiral tube during the initial heat exchange. A large number of impurity particles in the waste gas are prone to collision with the tube wall and adhere and accumulate, making them difficult to clean. Moreover, the tube wall is easily corroded by acidic substances in the waste gas. The subsequent purification tower integrates spraying and filtration, resulting in a high load on impurity treatment. The filter layer is easily clogged by sludge, requiring frequent shutdowns for cleaning and maintenance. The entire device lacks a reliable filtration and online high-efficiency cleaning mechanism, making it difficult to guarantee long-term stable operation. In addition, because impurities easily adhere and accumulate on the inner wall of the spiral tube, the heat exchange effect of the device is also poor. Summary of the Invention

[0005] The purpose of this invention is to address the problems of conventional high-temperature waste gas treatment devices that lack reliable filtration and efficient online cleaning mechanisms and have poor filtration and heat exchange effects. This invention provides a high-temperature waste gas treatment device with heat recovery function.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution: A high-temperature waste gas treatment device with heat recovery function includes a frame and a treatment chamber fixedly connected to the left wall of the inner cavity of the frame. A toothed ring screen is rotatably connected to the inner wall of the treatment chamber. An exhaust pipe is fixedly connected to the bottom of the treatment chamber. A filter cylinder is threaded into the exhaust pipe. An L-shaped air inlet pipe is installed in the middle of the treatment chamber, with its right end slidingly sealing against the toothed ring screen. A pressure sensor is installed on the upper wall of the inner cavity of the right end of the air inlet pipe. A scraper capable of vertical vibration is slidably engaged on the rear wall of the inner cavity of the right end of the air inlet pipe. A guide plate is rotatably connected to the rear wall of the inner cavity of the right end of the air inlet pipe, which is in movable sealing contact with the toothed ring screen. A waste discharge groove is provided between the air inlet pipe and the lower wall of the right end of the treatment chamber. A collection cylinder is threadedly connected to the bottom of the waste discharge groove. A backflush hood is fixedly connected to the right end of the treatment chamber. A desulfurization heat exchange component for receiving exhaust gas from the inlet pipe is provided at the right end of the treatment chamber. An adjustment component for driving the deflection of the guide plate and toothed ring screen and the backflush hood to backflush is provided on the rear wall of the frame.

[0007] Furthermore, a triangular cavity is formed between the guide plate and the scraper, and the top of the waste discharge groove has an opening communicating with the triangular cavity. The lower wall of the triangular cavity is inclined toward the opening, and the upper and lower ends of the guide plate are respectively in sliding and sealing contact with the inner wall of the air intake pipe.

[0008] Furthermore, the right end of the scraper is slidably inserted with a spring scraper head that slides and seals against the toothed ring screen, and the right end of the spring scraper head has a serrated design.

[0009] Furthermore, the desulfurization heat exchange assembly includes a dry desulfurization tower fixedly connected to the right side of the inner cavity of the frame. A receiving pipe is fixedly connected to the left end of the dry desulfurization tower and slides and seals against the outer wall of the toothed ring screen. The left end of the receiving pipe is fixedly inserted into the right wall of the treatment chamber. The cross-section of the receiving pipe and the end adjacent to the inlet pipe are both rectangular and have the same specifications. An induced draft fan is installed on the rear wall of the frame. A connecting pipe is fixedly connected between the rear inlet of the induced draft fan and the exhaust gas outlet at the top of the dry desulfurization tower. A U-shaped pipe is fixedly connected to the left outlet of the induced draft fan. Heat exchange tubes with both ends protruding are fixedly inserted into the upper inner wall of the U-shaped pipe.

[0010] Furthermore, the heat exchange tube body is spiral-shaped and its diameter alternates along the axial direction.

[0011] Furthermore, the left end of the backflush hood is open and slides and seals against the outer wall of the toothed ring screen. The backflush hood is located at the rear end of the receiving tube. A branch pipe is fixedly connected between the bottom of the backflush hood and the lower side of the U-shaped tube. The lower end of the branch pipe is inclinedly connected to the lower part of the U-shaped tube.

[0012] Furthermore, the exhaust pipe is L-shaped at one end near the bottom of the treatment chamber, the filter cylinder is located at the corner of the L-shaped portion, a filter screen is fixedly connected to the top of the inner cavity of the filter cylinder, the filter cylinder has an exhaust groove corresponding to the exhaust pipe, the end of the exhaust pipe away from the bottom of the treatment chamber is fixedly inserted into the end of the U-shaped pipe, and a one-way valve is provided on the inner wall of the end of the exhaust pipe away from the bottom of the treatment chamber.

[0013] Furthermore, the adjustment assembly includes a slide that is slidably engaged with the rear wall of the frame, a telescopic cylinder is fixedly connected between the left wall of the slide and the cavity wall of the frame, a connecting rod is rotatably connected to the top of the slide, a fan frame is fixedly connected to the top of the guide plate shaft, a fan groove with a central angle greater than that of the fan frame is correspondingly opened on the upper wall of the processing chamber, a rotating handle that is rotatably hinged to the connecting rod is rotatably connected to the top of the guide plate shaft, and a pin that movably abuts against the inner wall of the fan frame is fixedly inserted into the rotating handle; The bottom of the slide is fixedly connected to a diagonal rod, and the bottom end of the diagonal rod is fixedly connected to a valve pipe that is slidably and sealingly connected to the inner wall of the U-shaped tube. The valve pipe seals the lower end of the branch pipe, and the U-shaped tube has a sliding groove corresponding to the diagonal rod.

[0014] Furthermore, the adjustment assembly also includes a worm gear rotatably connected to the lower rear wall of the frame, the worm gear moving through the slide, the worm gear being driven by a motor mounted on the right wall of the frame, and the toothed ring screen having worm teeth meshing with the worm gear on its bottom periphery.

[0015] Furthermore, a frame is rotatably connected to the top of the processing chamber, and a T-shaped elastic push rod is slidably engaged with the frame on the rear wall of the frame. A cam is fixedly sleeved on the worm gear and slidably abuts against the elastic push rod. A T-shaped guide rod is fixedly connected to the top of the scraper and extends out of the top of the processing chamber. The guide rod is slidably engaged with the frame.

[0016] The beneficial effects of this invention are as follows: 1. This invention first filters the exhaust gas using a toothed ring screen. When the pressure sensor detects an abnormal increase in the exhaust gas pressure in the intake pipe, the adjustment component automatically drives the guide plate to deflect forward, creating a gap between it and the toothed ring screen. Subsequently, the adjustment component drives the usable part of the toothed ring screen to deflect backward, and the scraper automatically vibrates up and down, thereby scraping off the impurities adhering to the inner wall of the toothed ring screen. These impurities are then transported to the collection cylinder through the impurity discharge trough for collection. The cleaned toothed ring screen is then back-blown by the back-blowing hood, thereby strengthening the removal of impurities clogging the screen holes. Since the cleaning process does not affect the normal discharge of exhaust gas, online and efficient cleaning of the intake filtration part is achieved.

[0017] 2. After cleaning is completed, the adjustment component drives the guide plate and other corresponding parts to reset. The guide plate then isolates and seals the rear impurity discharge and collection area. The cleaning part occupies little space and has little interference with the flow of exhaust gas. The collection and filter cylinders facilitate the collection and treatment of impurities generated under the two cleaning mechanisms, and maintenance is quick. In addition, the heat exchange process is moved to the rear relative to the filtration and deacidification process, avoiding the problem of poor filtration and heat exchange effects caused by the traditional exhaust gas treatment device that first exchanges heat and then sprays and filters. Attached Figure Description

[0018] Figure 1 This is a first-view three-dimensional structural diagram of the present invention; Figure 2 This is a second-view three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional sectional view of the frame and processing compartment of the present invention; Figure 4 This is a three-dimensional sectional view of the toothed ring screen and the air inlet pipe of the present invention; Figure 5 This is a three-dimensional sectional view of the collecting cylinder and the air inlet pipe of the present invention; Figure 6 This is a three-dimensional structural diagram of the connecting rod and frame portion of the present invention; Figure 7 This is a three-dimensional sectional view of the processing chamber and toothed ring screen of the present invention; Figure 8 This is an exploded view of the scraper and guide plate of the present invention; Figure 9 This is a three-dimensional sectional view of the frame and toothed ring screen of the present invention; Figure 10 This is a three-dimensional cross-sectional view of the branch pipe and U-shaped pipe of the present invention.

[0019] Reference numerals: 1. Frame; 2. Processing chamber; 21. Toothed ring screen; 22. Exhaust pipe; 23. Filter cartridge; 24. Filter screen; 25. Backflush hood; 26. Branch pipe; 27. Collection cylinder; 3. Inlet pipe; 31. Pressure sensor; 4. Scraper; 41. Guide rod; 42. Elastic scraper head; 5. Guide plate; 51. Fan frame; 52. Rotary handle; 53. Pin; 54. Connecting rod; 6. Dry deacidification tower; 61. Receiving pipe; 62. Connecting pipe; 7. Exhaust fan; 71. U-shaped tube; 72. Heat exchange tube; 8. Worm gear; 81. Cam; 82. Slide frame; 83. Telescopic cylinder; 84. Diagonal rod; 85. Valve pipe; 9. Bar frame; 91. Elastic push rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] Example 1, as Figures 1-10 As shown, a high-temperature waste gas treatment device with heat recovery function includes a frame 1 and a treatment chamber 2 fixedly connected to the left wall of the inner cavity of the frame 1. A toothed ring screen 21 is rotatably connected to the inner wall of the treatment chamber 2. An exhaust pipe 22 is fixedly connected to the bottom of the treatment chamber 2. A filter cylinder 23 is threaded into the exhaust pipe 22. An air inlet pipe 3 in an L-shape is installed in the middle of the treatment chamber 2. A pressure sensor 31 is installed on the upper wall of the inner cavity of the right end of the air inlet pipe 3. A scraper 4 capable of vertical vibration is slidably engaged on the rear wall of the inner cavity of the right end of the air inlet pipe 3. A guide plate 5 is rotatably connected to the rear wall of the inner cavity of the right end of the air inlet pipe 3 and is in movable sealing contact with the toothed ring screen 21. A waste discharge groove is provided between the air inlet pipe 3 and the lower wall of the right end of the treatment chamber 2. A collection cylinder 27 is threadedly connected to the bottom of the waste discharge groove. A triangular cavity is formed between the guide plate 5 and the scraper 4. The top of the waste discharge groove has an opening that communicates with the triangular cavity. The lower wall of the triangular cavity is inclined toward the opening. The upper and lower ends of the guide plate 5 slide and seal against the inner wall of the air intake pipe 3 respectively. A backflush hood 25 is fixedly connected to the right end of the treatment chamber 2. The left end of the backflush hood 25 is open and slides and seals against the outer wall of the toothed ring screen 21. The backflush hood 25 is located at the rear end of the receiving pipe 61. A desulfurization heat exchange assembly for receiving exhaust gas from the inlet pipe 3 is provided at the right end of the treatment chamber 2. An adjustment assembly for driving the guide plate 5 and the toothed ring screen 21 to deflect and the backflush hood 25 to backflush is provided on the rear wall of the frame 1. The desulfurization heat exchange assembly includes a dry desulfurization tower 6 fixedly connected to the right side of the inner cavity of the frame 1. The left end of the dry desulfurization tower 6 is fixedly connected to... A receiving pipe 61 is slidably and sealingly abutting against the outer wall of the toothed ring screen 21. The left end of the receiving pipe 61 is fixedly inserted into the right wall of the treatment chamber 2. The cross-section of the receiving pipe 61 and the air inlet pipe 3 adjacent to each other are rectangular and have the same specifications. An induced draft fan 7 is installed on the rear wall of the frame 1. A connecting pipe 62 is fixedly connected between the rear inlet of the induced draft fan 7 and the top exhaust outlet of the dry desulfurization tower 6. A U-shaped pipe 71 is fixedly connected to the left outlet of the induced draft fan 7. A heat exchange pipe 72 with both ends protruding is fixedly inserted into the upper inner wall of the U-shaped pipe 71.

[0022] During operation, exhaust gas enters through the upper port of inlet pipe 3, and particulate impurities are filtered out by toothed ring screen 21. The filtered exhaust gas then enters dry deacidification tower 6 (dry deacidification tower 6 can be a dry jet deacidification tower, which is an existing technology and will not be elaborated further) through receiving pipe 61 for deacidification. Subsequently, the exhaust gas is output from the top of dry deacidification tower 6 and is drawn by induced draft fan 7 through connecting pipe 62 to U-shaped pipe 71 for output. The heat exchange tube 72 has inlet and outlet water pipes connected to its left and right ends, respectively. After treatment, the exhaust gas automatically undergoes heat exchange when passing through the heat exchange tube 72, heating the water in the heat exchange tube 72. Due to the filtration and deacidification treatment of the exhaust gas, the emissions are effectively reduced. The heat exchange tube 72 is free from the risk of surface dust accumulation and corrosion. Its use is safe and reliable. When the device is operating and filtering particulate impurities, the guide plate 5 isolates and seals the rear impurity discharge and collection area, minimizing interference with exhaust gas flow and ensuring stable exhaust gas flow. After the device has been running for a period of time, when the toothed ring screen 21 becomes clogged with particulate impurities, the pressure sensor 31 detects an abnormal increase in exhaust gas pressure in the inlet pipe 3. The adjusting component automatically drives the guide plate 5 to deflect slightly forward, away from the scraper 4 and out of contact with the inner wall of the toothed ring screen 21. A gap is automatically formed between the guide plate 5 and the toothed ring screen 21. The adjusting component then drives the clogged portion of the toothed ring screen 21 to deflect backward. The guide plate 5 deflects the exhaust gas forward, creating a backflow zone behind it. This backflow zone is minimally affected by the airflow. Combined with the automatic up-and-down vibration of the scraper 4, impurities adhering to the inner wall of the toothed ring screen 21 are automatically scraped off by the scraper 4 after passing through the gap area. The scraped impurities fall through the triangular cavity and then through the discharge trough into the collection cylinder 27 for automatic collection. During this process, the adjusting component drives the back-blowing hood 25 to back-blow the cleaned toothed ring screen 21 from the outside, thereby enhancing the removal of impurities clogging the screen holes and improving the cleaning effect of the toothed ring screen 21. The back-blown impurities are blown into the inner cavity of the treatment chamber 2 and filtered by the filter cylinder 23 in the exhaust pipe 22. The exhaust gas is directly output from the exhaust pipe 22. During the cleaning process, the cleaning part occupies little space and the guide plate 5 deflects forward only slightly, so it does not affect the normal discharge of exhaust gas. This achieves online and efficient cleaning of the intake filtration part. After cleaning, the adjustment component automatically drives the guide plate 5 and other corresponding parts to reset. The guide plate 5 isolates and seals the rear impurity discharge and collection area again. Subsequently, the collection cylinder 27 and filter cylinder 23 can be rotated, disassembled and cleaned periodically to achieve simple maintenance. In addition, the heat exchange process is moved to the rear relative to the filtration and deacidification process, avoiding the problem of poor filtration and heat exchange effect caused by the traditional exhaust gas treatment device directly exchanging heat first and then spraying filtration.

[0023] In Example 2, based on the above example, a spring scraper head 42 is slidably inserted into the right end of the scraper 4 and slides and seals against the toothed ring screen 21. The right end of the spring scraper head 42 has a serrated design.

[0024] The initial elastic scraper head 42 is elastically connected to the scraper 4 and is in a compressed state. The elastic scraper head 42 is subjected to pre-tightening force and squeezes the inner wall of the toothed ring screen 21, thereby enhancing the scraping effect on impurities and compensating for the gap caused by wear, maintaining the reliability and stability of cleaning the toothed ring screen 21. The serrated design at the right end of the elastic scraper head 42 facilitates the removal of impurities adhering to the inner wall of the toothed ring screen 21, further enhancing the scraping and cleaning effect.

[0025] In Example 3, based on the above examples, the heat exchange tube 72 has a spiral shape and its diameter changes alternately along the axial direction.

[0026] This design increases the spacing between adjacent spiral tubes with a fixed diameter, preventing obstruction of exhaust gas flow and allowing more exhaust gas to flow smoothly over the tube wall, increasing the effective heat exchange area. Furthermore, the variable diameter design promotes turbulence in the exhaust gas, disrupts the heat exchange boundary layer, reduces thermal resistance, and enhances the efficiency of convective heat transfer.

[0027] In Example 4, based on the above examples, the exhaust pipe 22 is L-shaped at one end near the bottom of the processing chamber 2, and the filter cylinder 23 is located at the corner of the L-shaped part. A filter screen 24 is fixedly connected to the top of the inner cavity of the filter cylinder 23. The filter cylinder 23 has an exhaust groove corresponding to the exhaust pipe 22. The end of the exhaust pipe 22 away from the bottom of the processing chamber 2 is fixedly inserted into the end of the U-shaped tube 71. A one-way valve is provided on the inner wall of the end of the exhaust pipe 22 away from the bottom of the processing chamber 2.

[0028] This design facilitates the use of filter screen 24 to filter impurities that are blown down from the back, and also makes it easy to rotate and disassemble filter cartridge 23 to clean filter screen 24. After filter cartridge 23 is installed in place, it can ensure that exhaust gas is discharged normally.

[0029] In Example 5, based on the above examples, the adjustment assembly includes a slide 82 that is slidably attached to the rear wall of the frame 1. A telescopic cylinder 83 is fixedly connected between the left wall of the slide 82 and the cavity wall of the frame 1. A connecting rod 54 is rotatably connected to the top of the slide 82. A fan frame 51 is fixedly connected to the top of the shaft of the guide plate 5. A fan groove with a central angle greater than that of the fan frame 51 is correspondingly opened on the upper wall of the processing chamber 2. A rotating handle 52 that is rotatably hinged to the connecting rod 54 is rotatably connected to the top of the shaft of the guide plate 5. A pin 53 that movably abuts against the inner wall of the fan frame 51 is fixedly inserted into the rotating handle 52.

[0030] When the pressure sensor 31 detects an abnormal increase in the exhaust gas pressure in the intake pipe 3, the pressure sensor 31 controls the extension cylinder 83 to extend. The extension cylinder 83 pushes the slide 82 to the right, and the connecting rod 54 pulls the handle 52 to drive the pin 53 to deflect. When the handle 52 deflects to its maximum range, the pin 53 just squeezes the fan frame 51 to deflect to the other side of the fan groove, thus ensuring that the fan frame 51 drives the guide plate 5 to deflect slightly, breaking away from the contact with the inner wall of the toothed ring screen 21. This causes the guide plate 5 to form a gap with a small distance between it and the toothed ring screen 21, which is affected by the airflow. This ensures that the impurities adhering to the inner wall of the toothed ring screen 21 can stably pass through the gap and are not easily affected by the impact of the exhaust gas in the main channel after passing through.

[0031] In Example 6, based on the above examples, a branch pipe 26 is fixedly connected between the bottom of the backflush hood 25 and the lower side of the U-shaped tube 71, and the lower end of the branch pipe 26 is inclinedly connected to the lower part of the U-shaped tube 71. The bottom of the slide 82 is fixedly connected to a diagonal rod 84, and the bottom end of the diagonal rod 84 is fixedly connected to a valve pipe 85 that is slidably and sealingly connected to the inner wall of the U-shaped tube 71. The valve pipe 85 seals the lower end of the branch pipe 26, and the U-shaped tube 71 has a sliding groove corresponding to the diagonal rod 84.

[0032] When the telescopic cylinder 83 pushes the slide 82 to the right a sufficient distance, the slide 82 simultaneously drives the inclined rod 84 to move the valve pipe 85 to the right, so as to open the lower end port of the branch pipe 26. Part of the exhaust gas after heat exchange is injected from the bottom of the branch pipe 26 and fills the backflush hood 25 to backflush the toothed ring screen 21. Since this part of the exhaust gas still has residual heat, the backflush can reduce the cooling effect on the toothed ring screen 21 and reduce the heat loss when the high temperature exhaust gas passes through the toothed ring screen 21.

[0033] In embodiment seven, based on the above embodiments, the adjustment assembly further includes a worm 8 rotatably connected to the lower rear wall of the frame 1. The worm 8 moves through the slide 82 and is driven by a motor installed on the right wall of the frame 1. The toothed ring screen 21 has worm teeth on its bottom periphery that mesh with the worm 8.

[0034] When the pressure sensor 31 detects an abnormal increase in the exhaust gas pressure in the intake pipe 3, the pressure sensor 31 also feeds back to control the motor to drive the worm gear 8 to rotate. The worm gear 8 then engages and drives the blocked part of the toothed ring screen 21 to deflect backward, so as to cooperate with the scraper 4 to scrape off the impurities and replace the new filter part.

[0035] Example 8: Based on the above examples, a frame 9 is rotatably connected to the top of the processing chamber 2. A spring-loaded push rod 91 in a T-shape is slidably engaged with the frame 9 on the rear wall of the frame 1. A cam 81 that slides against the spring-loaded push rod 91 is fixedly sleeved on the worm gear 8. A guide rod 41 in a T-shape that moves through the top of the processing chamber 2 is fixedly connected to the top of the scraper 4. The guide rod 41 is slidably engaged with the frame 9.

[0036] Initially, the elastic push rod 91 is in a compressed state. When the cam 81 is rotated by the worm gear 8, the elastic push rod 91 moves up and down continuously under its own elastic force, thereby causing the frame 9 to deflect up and down. The frame 9 then drives the guide rod 41 to cause the scraper 4 to vibrate up and down slightly, thereby improving the scraping and cleaning effect on the toothed ring screen 21.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-temperature waste gas treatment device with heat recovery function, comprising a frame (1) and a treatment chamber (2) fixedly connected to the left wall of the inner cavity of the frame (1), characterized in that, The inner wall of the processing chamber (2) is rotatably connected to a toothed ring screen (21). The bottom of the processing chamber (2) is fixedly connected to an exhaust pipe (22). A filter cylinder (23) is threaded into the exhaust pipe (22). An air inlet pipe (3) with its right end slidingly and sealingly abutting against the toothed ring screen (21) is installed in the middle of the processing chamber (2). A pressure sensor (31) is installed on the upper wall of the inner cavity of the right end of the air inlet pipe (3). A scraper (4) capable of vibrating up and down is slidably clamped onto the rear wall of the inner cavity of the right end of the air inlet pipe (3). A guide plate (5) that movably and sealingly abuts against the toothed ring screen (21) is rotatably connected to the rear wall of the inner cavity of the right end of the air inlet pipe (3). A waste discharge groove is provided between the air inlet pipe (3) and the lower wall of the right end of the processing chamber (2). A collection cylinder (27) is threadedly connected to the bottom of the waste discharge groove. The right end of the treatment chamber (2) is fixedly connected to a backflush hood (25). The right end of the treatment chamber (2) is provided with a desulfurization heat exchange component that receives the exhaust gas from the inlet pipe (3). The rear wall of the frame (1) is provided with an adjustment component that drives the guide plate (5) and the toothed ring screen (21) to deflect and the backflush hood (25) to backflush.

2. The high-temperature waste gas treatment device with heat recovery function according to claim 1, characterized in that, A triangular cavity is formed between the guide plate (5) and the scraper (4). The top of the waste discharge groove has an opening that communicates with the triangular cavity. The lower wall of the triangular cavity is inclined toward the opening. The upper and lower ends of the guide plate (5) slide and seal against the inner wall of the air inlet pipe (3).

3. A high-temperature waste gas treatment device with heat recovery function according to claim 2, characterized in that, The scraper (4) has a spring scraper head (42) that slides and seals against the toothed ring screen (21) at the right end. The right end of the spring scraper head (42) is designed with a serrated shape.

4. A high-temperature waste gas treatment device with heat recovery function according to claim 3, characterized in that, The desulfurization heat exchange assembly includes a dry desulfurization tower (6) fixedly connected to the right side of the inner cavity of the frame (1). The left end of the dry desulfurization tower (6) is fixedly connected to a receiving pipe (61) that slides and seals against the outer wall of the toothed ring screen (21). The left end of the receiving pipe (61) is fixedly inserted into the right wall of the processing chamber (2). The cross-section of the receiving pipe (61) and the end adjacent to the air inlet pipe (3) are both rectangular and have the same specifications. An induced draft fan (7) is installed on the rear wall of the frame (1). A connecting pipe (62) is fixedly connected between the rear inlet of the induced draft fan (7) and the exhaust gas outlet at the top of the dry desulfurization tower (6). A U-shaped pipe (71) is fixedly connected to the left outlet of the induced draft fan (7). A heat exchange pipe (72) with both ends protruding is fixedly inserted into the upper inner wall of the U-shaped pipe (71).

5. A high-temperature waste gas treatment device with heat recovery function according to claim 4, characterized in that, The heat exchange tube (72) has a spiral shape and its diameter changes alternately along the axial direction.

6. A high-temperature waste gas treatment device with heat recovery function according to claim 5, characterized in that, The backflush hood (25) is open at the left end and slides and seals against the outer wall of the toothed ring screen (21). The backflush hood (25) is located at the rear end of the receiving tube (61). A branch pipe (26) is fixedly connected between the bottom of the backflush hood (25) and the lower side of the U-shaped tube (71). The lower end of the branch pipe (26) is inclinedly connected to the lower part of the U-shaped tube (71).

7. A high-temperature waste gas treatment device with heat recovery function according to claim 6, characterized in that, The exhaust pipe (22) is L-shaped at one end near the bottom of the processing chamber (2). The filter cylinder (23) is located at the corner of the L-shaped part. A filter screen (24) is fixedly connected to the top of the inner cavity of the filter cylinder (23). The filter cylinder (23) has an exhaust groove corresponding to the exhaust pipe (22). The end of the exhaust pipe (22) away from the bottom of the processing chamber (2) is fixedly inserted into the end of the U-shaped pipe (71). A one-way valve is provided on the inner wall of the end of the exhaust pipe (22) away from the bottom of the processing chamber (2).

8. A high-temperature waste gas treatment device with heat recovery function according to claim 7, characterized in that, The adjustment assembly includes a slide (82) that is slidably attached to the rear wall of the frame (1). A telescopic cylinder (83) is fixedly connected between the left wall of the slide (82) and the cavity wall of the frame (1). A connecting rod (54) is rotatably connected to the top of the slide (82). A fan frame (51) is fixedly connected to the top of the shaft of the guide plate (5). A fan groove with a central angle greater than that of the fan frame (51) is correspondingly opened on the upper wall of the processing chamber (2). A rotating handle (52) that is rotatably hinged to the connecting rod (54) is rotatably connected to the top of the shaft of the guide plate (5). A pin (53) that movably abuts against the inner wall of the fan frame (51) is fixedly inserted into the rotating handle (52). The bottom of the slide (82) is fixedly connected to a diagonal rod (84), and the bottom end of the diagonal rod (84) is fixedly connected to a valve pipe (85) that is slidably sealed to the inner wall of the U-shaped tube (71). The valve pipe (85) seals the lower end of the branch pipe (26), and the U-shaped tube (71) has a groove corresponding to the diagonal rod (84).

9. A high-temperature waste gas treatment device with heat recovery function according to claim 8, characterized in that, The adjustment assembly also includes a worm (8) rotatably connected to the lower rear wall of the frame (1), the worm (8) moving through the slide (82), the worm (8) being driven by a motor installed on the right wall of the frame (1), and the toothed ring screen (21) having worm teeth that mesh with the worm (8) on the bottom periphery.

10. A high-temperature waste gas treatment device with heat recovery function according to claim 9, characterized in that, The top of the processing chamber (2) is rotatably connected to a frame (9). The rear wall of the frame (1) is slidably engaged with a spring-loaded rod (91) that is T-shaped and slidably engaged with the frame (9). A cam (81) that slidably abuts against the spring-loaded rod (91) is fixedly sleeved on the worm gear (8). The top of the scraper (4) is fixedly connected with a guide rod (41) that is T-shaped and movably protrudes from the top of the processing chamber (2). The guide rod (41) is slidably engaged with the frame (9).

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