Waste heat recovery device for organic modified bentonite production

Abstract

The invention relates to the technical field of waste heat recovery, and particularly discloses a waste heat recovery device for organic modified bentonite production, which comprises three heat exchange pipes, the three heat exchange pipes are arranged in a shell in parallel at equal intervals, the upper ends and the lower ends of the heat exchange pipes penetrate through the top and the bottom of the shell respectively, and the heat exchange pipes are integrally arranged in a snake-shaped bent shape; a convex part and a concave part are arranged in the middle of the heat exchange tube, and the concave part of the heat exchange tube is provided with a drainage assembly for draining accumulated water in the heat exchange tube. According to the organic modified bentonite drying device, through the arrangement of the heat exchange pipe, the flow dividing box and the flow gathering box, when waste heat is recovered when organic modified bentonite is dried, the heat exchange time is prolonged, the heat exchange range is widened, and the heat exchange efficiency and effect are improved; and water scale adsorbed on the outer side of the heat exchange pipe in the shell can be regularly cleaned, it is ensured that the device can continuously recycle waste heat generated in organic modified bentonite production, and good practicability is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of waste heat recovery, and in particular relates to a waste heat recovery device for producing organic modified bentonite. Background Art

[0002] Organic bentonite is an inorganic mineral / organic ammonium complex, made from bentonite as raw material, using the lamellar structure of montmorillonite in bentonite and its ability to swell and disperse into colloidal clay particles in water or organic solvents, and inserting an organic covering agent through ion exchange technology. Organic bentonite can form gels in various organic solvents, oils, and liquid resins, and has good thickening, thixotropy, suspension stability, high temperature stability, lubricity, film-forming properties, water resistance and chemical stability, and has important application value in the coating industry. It is also widely used in paints, inks, aviation, metallurgy, chemical fiber, petroleum and other industries.

[0003] The production process of organic modified bentonite mainly includes dry method, wet method and pre-gel method. When preparing organic modified bentonite by dry method or wet method, the modified organic bentonite needs to be dried. A dryer is required during drying. When the dryer is in use, a large amount of flue gas carrying waste heat is generated, which is directly discharged into the environment, easily causing excessive temperature in the bentonite workshop and environmental pollution.

[0004] In the Chinese patent with publication number CN211739945U, a waste heat recovery device for organic modified bentonite production is mentioned, which guides the discharged flue gas into the processing box body through the waste heat collection pipe, so that the circulating water in the circulating pipe can contact the residual smoke entering the processing box body, and then the circulating pipe can be used to cool the residual smoke, and the circulating water in the circulating pipe can be heated by the residual smoke, and the heated circulating water can be introduced into the next processing step through the drainage pipe, thereby effectively improving the use accuracy of the utility model;

[0005] Since the flue gas generated when bentonite is dried carries a large amount of water vapor, the waste heat recovery device for organic modified bentonite production in the above-mentioned prior art lacks cleaning of the inside and outside of the heat exchange tube when recovering waste heat, resulting in a large amount of scale adsorbed on the surface and inner wall of the heat exchange tube after long-term use. As the scale increases, the heat exchange effect will also decrease, affecting the recovery of waste heat. For this reason, we propose a waste heat recovery device for organic modified bentonite production. Summary of the invention

[0006] The purpose of the present invention is to provide a waste heat recovery device for organic modified bentonite production to solve the problem in the prior art that after long-term use, a large amount of scale will be adsorbed on the surface and inner wall of the heat exchange tube, and as the scale increases, the heat exchange effect will also decrease.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A waste heat recovery device for producing organic modified bentonite, comprising:

[0009] The shell is arranged beside the drying machine in the organic modified bentonite production workshop, a water outlet pipe for discharging water after heat exchange is arranged at the lower front side of the shell, a water inlet pipe for entering water before heat exchange is arranged at the upper right side of the shell, and a cleaning component for cleaning the outside of the heat exchange tube is arranged on the inner side of the shell;

[0010] Heat exchange tubes, three of which are arranged in parallel and at equal intervals inside the shell, and the upper and lower ends respectively penetrate the top and bottom of the shell, the overall shape of the heat exchange tube is arranged in a serpentine shape, with a convex part and a concave part in the middle, and the concave part of the heat exchange tube is provided with a drainage component for discharging the accumulated water in the heat exchange tube;

[0011] A water tank, which is arranged at the bottom of the shell and is used to collect and store the water accumulated in the heat exchange tube discharged by the drainage component;

[0012] The cleaning assembly comprises a cleaning frame, which is arranged inside the shell, and the cleaning bristles for brushing the outside of the heat exchange tube are arranged inside the cleaning frame, and the number of concave and convex cleaning pieces adapted to the concave and convex parts of the heat exchange tube are arranged inside the cleaning frame, which are used for brushing and maintaining the concave and convex parts of the heat exchange tube, and a driving motor is arranged outside the shell, and the driving motor is fixedly connected to a threaded rod through an output shaft;

[0013] The drainage assembly includes a connecting pipe, which is arranged between the shell and the water tank and is used to guide the accumulated water in the heat exchange tube into the water tank.

[0014] Preferably: the left ends of the three heat exchange tubes are fixedly connected to the same diverter box, and the right ends are fixedly connected to the same concentrator box, a flue gas inlet pipe connected to the exhaust port of the organic modified bentonite dryer is arranged on the outside of the diverter box, and a flue gas outlet pipe is arranged on the outside of the concentrator box.

[0015] Preferably: the connecting pipe is fixedly connected to the recessed portion of the heat exchange pipe and communicated with the interior of the heat exchange pipe, the bottom end of the connecting pipe passes through the top of the water tank and extends into the interior of the water tank, and a control valve is provided in the middle of the connecting pipe.

[0016] Preferably, two symmetrically distributed dividing strips are fixedly connected to the inner side of the cleaning frame, and the cleaning bristles are fixedly connected to the inner side of the cleaning frame and the outer side of the dividing strips for cleaning scale on the outer side of the three heat exchange tubes.

[0017] Preferably, a groove in the shape of a circular groove is arranged in the middle of the cleaning bristles, the heat exchange tube is arranged inside the groove, and the outer side of the cleaning bristles is tightly fitted with the outer side of the heat exchange tube.

[0018] Preferably, two symmetrically distributed connecting plates are fixedly connected to the outside of the cleaning frame, the bottom end of the threaded rod passes through the top of the outer shell and is movably connected to the top and inner bottom of the outer shell through bearings, and the connecting plate is threadedly connected to the outside of the corresponding threaded rod.

[0019] Preferably, two groups of symmetrically distributed vertical rods are fixedly connected to the inner side of the shell, a circular hole is opened on the top of the connecting plate and is penetrated, and the vertical rods are slidably connected to the inner side of the circular hole.

[0020] Preferably, the concave-convex cleaning member comprises symmetrically distributed side plates, and the opposite surfaces of the two side plates are movably connected to the same transmission rod through bearings, and a cleaning roller is fixedly connected to the outer side of the transmission rod.

[0021] Preferably, two groups of symmetrically distributed sliding blocks are fixedly connected to the inner side of the cleaning frame, and sliding grooves are provided on the sides of the two side panels away from each other, and the two groups of sliding blocks are slidably connected to the inner sides of the corresponding sliding grooves.

[0022] Preferably, the outer side of the cleaning bristles is provided with symmetrically distributed notches, and the side panels are arranged on the inner sides of the corresponding notches to facilitate the up and down movement of the side panels.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention, through the arrangement of heat exchange tubes, diverter boxes and concentrator boxes, can make more heat in the flue gas contact with the water inside the shell when recovering the waste heat during drying of organic modified bentonite, thereby increasing the heat exchange time and heat exchange range, improving the heat exchange efficiency and effect, and avoiding the waste of waste heat.

[0025] 2. The present invention sets a cleaning component, and when recovering the waste heat generated when drying the organic modified bentonite, the scale adsorbed on the outside of the heat exchange tube in the shell can be cleaned regularly to make the outside of the heat exchange tube clean, thereby ensuring that the device can continuously recover the waste heat generated by the organic modified bentonite, and has good practicality.

[0026] 3. The present invention provides a concave-convex cleaning piece. When the cleaning assembly cleans the heat exchange tube, the concave-convex cleaning piece can be driven to move. When the concave-convex cleaning piece moves, the concave and convex parts of the heat exchange tube can be cleaned to avoid the phenomenon of cleaning dead corners, which facilitates the continuous use of the heat exchange tube and enables the device to continuously recover the waste heat from the production of organic modified bentonite.

[0027] 4. The arrangement of the drainage assembly and the recessed and convex parts of the heat exchange tubes of the present invention causes the water vapor carried in the flue gas to condense after the temperature is lowered. The condensed water vapor enters the connecting tube through the recessed part of the heat exchange tube, and then enters the water tank for storage through the connecting tube, thereby preventing it from remaining in the heat exchange tube, thus ensuring the cleanliness of the inner wall of the heat exchange tube. In cooperation with the cleaning assembly, the cleanliness of the inside and outside of the heat exchange tube is ensured, further improving the effect of recovering the waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 One of the three-dimensional diagrams of the present invention;

[0029] Figure 2 This is the second stereogram of the present invention;

[0030] Figure 3 It is a partial cross-sectional schematic diagram of the housing of the present invention;

[0031] Figure 4 It is a schematic diagram of the connection between the heat exchange tube and the cleaning assembly of the present invention;

[0032] Figure 5 It is a schematic diagram of the connection between the heat exchange tube and the drainage assembly of the present invention;

[0033] Figure 6 It is a partial structural schematic diagram of the cleaning component of the present invention;

[0034] Figure 7 It is a partial structural schematic diagram of the cleaning frame of the present invention;

[0035] Figure 8 It is a schematic diagram of the partial explosion structure of the cleaning roller of the present invention.

[0036] In the figure:

[0037] 1. Shell; 11. Water outlet pipe; 12. Water inlet pipe;

[0038] 2. heat exchange tube; 21. concentrator box; 22. flue gas inlet pipe; 23. flue gas outlet pipe; 24. diverter box; 25. connecting pipe; 251. control valve; 26. cleaning frame; 261. vertical rod; 262. drive motor; 263. connecting plate; 264. threaded rod; 265. cleaning roller; 2651. side plate; 2652. slideway; 2653. transmission rod; 2654. slider; 266. cleaning brush; 2661. groove; 2662. notch; 267. round hole; 268. dividing strip;

[0039] 3. Water tank; 31. Sewage pipe. DETAILED DESCRIPTION

[0040] 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 described embodiments 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.

[0041] Reference Figure 1-Figure 8 As shown, the present invention provides a waste heat recovery device for organic modified bentonite production, comprising:

[0042] Shell 1, which is arranged beside a drying machine in an organic modified bentonite production workshop, a water outlet pipe 11 for discharging water after heat exchange is arranged at the lower front side of the shell 1, a water inlet pipe 12 for entering water before heat exchange is arranged at the upper right side of the shell 1, and a cleaning component for cleaning the outside of the heat exchange tube 2 is arranged inside the shell 1;

[0043] Heat exchange tubes 2, three heat exchange tubes 2 are arranged in parallel and at equal intervals inside the shell 1, and the upper and lower ends respectively penetrate the top and bottom of the shell 1. The overall shape of the heat exchange tube 2 is arranged in a serpentine shape. The serpentine shape increases the time that the high-temperature flue gas stays in the shell 1 and helps to gather water vapor. A convex part and a concave part are arranged in the middle. The convex part is arranged to facilitate the water vapor generated by cooling to flow to both sides and enter the concave parts on both sides. The concave part of the heat exchange tube 2 is provided with a drainage component for discharging the accumulated water in the heat exchange tube 2;

[0044] A water tank 3, which is arranged at the bottom of the housing 1 and is used to collect and store the water accumulated in the heat exchange tube 2 discharged by the drainage assembly;

[0045] Specifically, a sewage pipe 31 is arranged at the front side of the water tank 3 , and a valve is arranged in the middle of the sewage pipe 31 . The opening and closing of the sewage pipe 31 can be controlled by the valve to discharge the water collected in the water tank 3 .

[0046] The cleaning assembly includes a cleaning frame 26, which is arranged inside the outer shell 1. A cleaning bristle 266 for brushing the outer side of the heat exchange tube 2 is arranged on the inner side of the cleaning frame 26. A number of concave and convex cleaning parts matching the concave and convex parts of the heat exchange tube 2 are arranged on the inner side of the cleaning frame 26, which are used for brushing and maintaining the concave and convex parts of the heat exchange tube 2. A driving motor 262 is arranged on the outer side of the outer shell 1. The driving motor 262 is installed with an output shaft. The driving motor 262 is fixedly connected to a threaded rod 264 through the output shaft. The driving motor 262 can drive the threaded rod 264 to rotate through the output shaft. The rotation of the threaded rod 264 provides power for the up and down movement of the cleaning frame 26.

[0047] In a further embodiment, referring to Figure 1-Figure 5The left ends of the three heat exchange tubes 2 are fixedly connected to the same diverter box 24, the flue gas enters the diverter box 24 through the flue gas inlet pipe 22, and enters the three parallel heat exchange tubes 2 through the diverter box 24, and exchanges heat with the water in the shell 1 through the heat exchange tubes 2. The right end is fixedly connected to the same gathering box 21, which gathers the flue gas discharged after the heat exchange, so that it is convenient for it to be discharged through the flue gas outlet pipe 23, thereby recovering the waste heat and avoiding energy waste. A flue gas inlet pipe 22 connected to the exhaust port of the organic modified bentonite dryer is arranged on the outside of the diverter box 24, and a flue gas outlet pipe 23 is arranged on the outside of the gathering box 21.

[0048] Specifically, the interiors of the focusing box 21 and the diverting box 24 are both hollow, and the flue gas can enter therein to focus and divert the flue gas, thereby improving the waste heat recovery effect of the heat in the flue gas.

[0049] In this embodiment, before the flue gas enters the shell 1 for heat exchange, it enters the three heat exchange tubes 2 through the diverter box 24. By diverting the flue gas, the flow rate of the flue gas is reduced, the time for waste heat recovery is increased, and the efficiency and effect of waste heat recovery are improved.

[0050] In a further embodiment, referring to Figure 1-Figure 5 The drainage assembly includes a connecting pipe 25, which is arranged between the shell 1 and the water tank 3 and is used to guide the accumulated water in the heat exchange tube 2 into the water tank 3. The connecting pipe 25 is fixedly connected to the recessed portion of the heat exchange tube 2 and is connected to the interior of the heat exchange tube 2. The bottom end of the connecting pipe 25 passes through the top of the water tank 3 and extends into the interior of the water tank 3. A control valve 251 is arranged in the middle of the connecting pipe 25.

[0051] In this embodiment, water vapor generated during heat exchange at the convex portion of the heat exchange tube 2 and other positions of the inner wall gathers in the concave portion, and enters the water tank 3 for storage through the connecting pipe 25 connected to the concave portion, thereby avoiding excessive residue in the heat exchange tube 2 to cause the growth of scale, and timely discharge of water vapor ensures the continuous and stable flow of flue gas and the heat exchange effect.

[0052] In a further embodiment, referring to Figure 6-Figure 7Two symmetrically distributed dividing strips 268 are fixedly connected to the inner side of the cleaning frame 26, and the cleaning bristles 266 are fixedly connected to the inner side of the cleaning frame 26 and the outer side of the dividing strips 268. The cleaning bristles 266 are filled in the inner side of the cleaning frame 26 for cleaning the scale on the outer sides of the three heat exchange tubes 2. Two symmetrically distributed connecting plates 263 are fixedly connected to the outer side of the cleaning frame 26. The connecting plates 263 are used for connecting the cleaning frame 26 and the threaded rods 264, and cooperate with the vertical rods 261 and the circular holes 267 to limit the moving trajectory of the cleaning frame 26. The bottom ends of the threaded rods 264 pass through the top of the outer shell 1 and are movably connected to the top and inner bottom of the outer shell 1 through bearings. The connecting plates 263 are threadedly connected to the outer sides of the corresponding threaded rods 264. Two groups of symmetrically distributed vertical rods 261 are fixedly connected to the inner side of the outer shell 1. A circular hole 267 that is set through is opened on the top of the connecting plate 263, and the vertical rods 261 are slidably connected to the inner sides of the circular holes 267.

[0053] Specifically, a circular groove 2661 is provided in the middle of the cleaning brush 266, the heat exchange tube 2 is provided inside the groove 2661, and the outer side of the cleaning brush 266 is tightly fitted with the outside of the heat exchange tube 2. The setting of the groove 2661 facilitates the movement of the cleaning frame 26 and the cleaning brush 266 on the outside of the heat exchange tube 2.

[0054] In this embodiment, the driving motor 262 drives the threaded rod 264 to rotate through the output shaft, and the rotation of the threaded rod 264 drives the cleaning frame 26 to move upward. During the movement, the cleaning bristles 266 arranged on the inner side are used to clean the scale on the outside of the heat exchange tube 2 to ensure that the outside of the heat exchange tube 2 is clean and to avoid the phenomenon that the scale affects the heat exchange effect.

[0055] In a further embodiment, referring to Figure 6 and Figure 8 The concave-convex cleaning member includes symmetrically distributed side plates 2651. The opposite surfaces of the two side plates 2651 are movably connected to the same transmission rod 2653 through bearings. The transmission rod 2653 can rotate on the outside of the two side plates 2651. The outside of the transmission rod 2653 is fixedly connected to a cleaning roller 265. The rotation of the transmission rod 2653 allows the cleaning roller 265 fixed on the outside to rotate. Two groups of symmetrically distributed sliders 2654 are fixedly connected to the inside of the cleaning frame 26. The two side plates 2651 are far away from each other. A slide groove 2652 is provided on each side, and two sets of sliders 2654 are slidably connected to the corresponding inner sides of the slide grooves 2652. The sliders 2654 and the slide grooves 2652 limit the position of the side plates 2651, and when the cleaning frame 26 moves, the side plates 2651 can be driven to move by the sliders 2654 and the slide grooves 2652. Symmetrically distributed notches 2662 are provided on the outer side of the cleaning bristles 266, and the side plates 2651 are arranged on the inner sides of the corresponding notches 2662, which are used to facilitate the up and down movement of the side plates 2651.

[0056] In this embodiment, while the driving motor 262 drives the cleaning frame 26 to move upward, the slider 2654 slides in the slide groove 2652. When the slider 2654 moves to the top of the slide groove 2652, the concave and convex cleaning parts follow the cleaning frame 26 to move upward under the action of the slider 2654. When moving upward, the friction between the outer side of the cleaning roller 265 and the concave and convex parts of the heat exchange tube 2 causes it to rotate, thereby cleaning the scale remaining on the outside and avoiding the phenomenon of cleaning dead corners.

[0057] The working principle of the present invention is as follows:

[0058] Through the flange arranged on the left side of the flue gas inlet pipe 22 and the exhaust port of the organic modified bentonite dryer, the exhaust gas enters each heat exchange tube 2 through the diverter box 24, and the heat in the flue gas exchanges heat with the water in the shell 1 under the action of the heat exchange tube 2, thereby collecting the waste heat generated during the production of the organic modified bentonite, and the heated water can be discharged through the water outlet pipe 11 for use;

[0059] The driving motor 262 is started regularly, and the driving motor 262 drives the threaded rod 264 to rotate through the output shaft. The threaded rod 264 rotates and drives the cleaning frame 26 to move upward through the connecting plate 263. The cleaning frame 26 moves upward to clean the scale and dust adsorbed on the outer side of each heat exchange tube 2 through the cleaning bristles 266;

[0060] At the same time, when the cleaning frame 26 moves upward, the side plates 2651 are driven to move upward under the action of the slider 2654 and the slide groove 2652. The two side plates 2651 move upward to drive the cleaning rollers 265 to move upward. The cleaning rollers 265 move upward and rotate under the action of the transmission rod 2653 and the bearing. The cleaning rollers 265 rotate to clean the scale adsorbed on the concave and convex surfaces of the heat exchange tube 2.

[0061] During the heat exchange process, the water vapor in the flue gas is cooled down after the heat exchange, and condensation occurs to form water droplets. Under the action of the serpentine, concave and convex parts of the heat exchange tube 2, the condensed water droplets gather at the concave part and enter the connecting tube 25. Then, they enter the water tank 3 below through the connecting tube 25 for storage and are discharged regularly, thereby preventing the accumulation of scale in the heat exchange tube 2.

[0062] After heat exchange, the flue gas in each heat exchange tube 2 enters the focusing box 21 and is then discharged through the flue gas outlet pipe 23 arranged outside the focusing box 21, thereby completing the recovery of waste heat during the production of organic modified bentonite.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for organic modified bentonite production, characterized in that: include: A shell (1), the shell (1) being arranged beside a drying machine in an organic modified bentonite production workshop, a water outlet pipe (11) for discharging water after heat exchange being arranged at the lower front side of the shell (1), a water inlet pipe (12) for entering water before heat exchange being arranged at the upper right side of the shell (1), and a cleaning component for cleaning the outside of a heat exchange tube (2) being arranged at the inner side of the shell (1); Heat exchange tubes (2), wherein three heat exchange tubes (2) are arranged in parallel and at equal intervals inside the shell (1), and the upper and lower ends respectively penetrate the top and bottom of the shell (1), the overall shape of the heat exchange tube (2) is arranged in a serpentine shape, with a convex part and a concave part arranged in the middle, and the concave part of the heat exchange tube (2) is provided with a drainage component for discharging water accumulated in the heat exchange tube (2); A water tank (3), the water tank (3) being arranged at the bottom of the housing (1) and being used for collecting and storing the accumulated water in the heat exchange tube (2) discharged from the drainage component; The cleaning assembly comprises a cleaning frame (26), the cleaning frame (26) being arranged inside the housing (1), the cleaning frame (26) being provided with cleaning bristles (266) for brushing the outside of the heat exchange tube (2), the cleaning frame (26) being provided with concave and convex cleaning pieces in a number matching the concave and convex parts of the heat exchange tube (2) for brushing and maintaining the concave and convex parts of the heat exchange tube (2), the housing (1) being provided with a driving motor (262), the driving motor (262) being fixedly connected to a threaded rod (264) via an output shaft; The drainage assembly comprises a connecting pipe (25), which is arranged between the outer shell (1) and the water tank (3) and is used to guide the accumulated water in the heat exchange tube (2) into the interior of the water tank (3).

2. The waste heat recovery device for producing organic modified bentonite according to claim 1, characterized in that: The left ends of the three heat exchange tubes (2) are fixedly connected to a same flow distribution box (24), and the right ends thereof are fixedly connected to a same flow collection box (21); a smoke inlet pipe (22) connected to an exhaust port of an organic modified bentonite dryer is arranged outside the flow distribution box (24); and a smoke outlet pipe (23) is arranged outside the flow collection box (21).

3. The waste heat recovery device for producing organic modified bentonite according to claim 1, characterized in that: The connecting pipe (25) is fixedly connected to the recessed portion of the heat exchange pipe (2) and is in communication with the interior of the heat exchange pipe (2); the bottom end of the connecting pipe (25) passes through the top of the water tank (3) and extends into the interior of the water tank (3); a control valve (251) is provided in the middle of the connecting pipe (25).

4. The waste heat recovery device for producing organic modified bentonite according to claim 1, characterized in that: Two symmetrically distributed dividing strips (268) are fixedly connected to the inner side of the cleaning frame (26), and the cleaning bristles (266) are fixedly connected to the inner side of the cleaning frame (26) and the outer side of the dividing strips (268) for cleaning scale on the outer sides of the three heat exchange tubes (2).

5. The waste heat recovery device for producing organic modified bentonite according to claim 1, characterized in that: A groove (2661) in the shape of a circular groove is arranged in the middle of the cleaning bristles (266), the heat exchange tube (2) is arranged inside the groove (2661), and the outside of the cleaning bristles (266) is tightly fitted to the outside of the heat exchange tube (2).

6. The waste heat recovery device for producing organic modified bentonite according to claim 1, characterized in that: Two symmetrically distributed connecting plates (263) are fixedly connected to the outside of the cleaning frame (26); the bottom end of the threaded rod (264) passes through the top of the outer shell (1) and is movably connected to the top and inner bottom of the outer shell (1) via bearings; the connecting plates (263) are threadedly connected to the outside of the corresponding threaded rods (264).

7. The waste heat recovery device for producing organic modified bentonite according to claim 6, characterized in that: Two groups of symmetrically distributed vertical rods (261) are fixedly connected to the inner side of the outer shell (1); a circular hole (267) is provided on the top of the connecting plate (263) and is penetrated therethrough; and the vertical rod (261) is slidably connected to the inner side of the circular hole (267).

8. The waste heat recovery device for producing organic modified bentonite according to claim 1, characterized in that: The concave-convex cleaning member comprises symmetrically distributed side plates (2651), the opposite surfaces of the two side plates (2651) are movably connected to the same transmission rod (2653) via bearings, and the outer side of the transmission rod (2653) is fixedly connected to a cleaning roller (265).

9. The waste heat recovery device for producing organic modified bentonite according to claim 8, characterized in that: Two groups of symmetrically distributed sliding blocks (2654) are fixedly connected to the inner side of the cleaning frame (26); a sliding groove (2652) is provided on the side away from each other of the two side plates (2651); and the two groups of sliding blocks (2654) are slidably connected to the inner side of the corresponding sliding groove (2652).

10. The waste heat recovery device for producing organic modified bentonite according to claim 8, characterized in that: The outer side of the cleaning bristles (266) is provided with symmetrically distributed notches (2662), and the side plates (2651) are arranged on the inner side of the corresponding notches (2662) for the up and down movement of the side plates (2651).

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