Waste heat recovery device and method for dried fruit processing and production workshop

Abstract

The invention relates to the technical field of waste heat recovery, in particular to a waste heat recovery device and method for a dried fruit processing and producing workshop. The device comprises a heat exchanger, an air inlet of the heat exchanger is fixedly connected with a fan, a plurality of snakelike heat exchange pipes are fixedly connected into the heat exchanger, one ends of the multiple heat exchange pipes are fixedly connected with the same water inlet pipe, and the other ends of the multiple heat exchange pipes are fixedly connected with the same water outlet pipe. A collecting frame is arranged at the bottom of the heat exchanger in a sliding and inserting mode, a cleaning device for cleaning heat exchange tubes is arranged in the heat exchanger and comprises a cleaning roller, a plurality of bristles are fixedly connected to the arc surface of the cleaning roller, and an air blowing device for cleaning the bristles on the cleaning roller is arranged in the heat exchanger. Dirt is cleaned through the bristles of the cleaning device, and meanwhile, the blowing device blows air to the bristles, so that impurities are prevented from adhering to the bristles.

Description

Technical Field

[0001] The present invention relates to the technical field of waste heat recovery, and in particular to a waste heat recovery device and method for a dried fruit processing workshop. Background Art

[0002] In the process of dried fruit processing, drying is an important link, which usually consumes a lot of heat energy. Through heat recovery technology, the waste heat generated in the drying process can be recovered and reused, thereby reducing dependence on external energy and reducing greenhouse gas emissions. This is of great significance to environmental protection and sustainable development.

[0003] When the waste heat recovery device of the prior art recovers the waste heat of dried fruits, impurities in the waste heat will come into contact with the heat exchange tubes inside the recovery device, and various dirt will easily deposit on the outer wall of the heat pipe, thereby affecting the efficiency of heat exchange. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that various dirts are easily deposited on the outer wall of the heat pipe, thereby affecting the efficiency of heat exchange, and to propose a waste heat recovery device and method for a dried fruit processing workshop.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a waste heat recovery device for a dried fruit processing workshop, comprising a heat exchanger, an air inlet of the heat exchanger is fixedly connected to a fan, a plurality of serpentine heat exchange tubes are fixedly connected to the inside of the heat exchanger, one end of the plurality of heat exchange tubes is fixedly connected to the same water inlet pipe, and the other end of the plurality of heat exchange tubes is fixedly connected to the same water outlet pipe, a collecting frame is slidably provided at the bottom of the heat exchanger, a cleaning device for cleaning the heat exchange tubes is provided inside the heat exchanger, the cleaning device comprises a cleaning roller, a plurality of bristles are fixedly connected to the arc surface of the cleaning roller, an air blowing device for cleaning the bristles on the cleaning roller is provided inside the heat exchanger, and an auxiliary device for protecting dust inside the collection frame is provided inside the heat exchanger.

[0006] The effect achieved by the above components is: when it is necessary to process the waste heat generated by the dried fruit processing, the staff first connects the external pipe to the water inlet pipe, and the water in the external pipe enters the interior of the heat exchange tube through the water inlet pipe. Then the staff turns on the fan at the air inlet of the heat exchanger, and the waste heat generated by the dried fruit processing enters the interior of the heat exchanger through the fan. When the waste heat contacts the heat exchange tube, the heat of the waste heat is absorbed by the water inside the heat exchange tube, and finally the water inside the heat exchange tube flows out through the outlet pipe. When dirt is deposited on the outer wall of the heat exchange tube, the cleaning device cleans the dirt with bristles, and the blowing device blows air to the bristles to prevent impurities from sticking to the bristles, which makes it inconvenient to clean the bristles next time. The cleaned dust falls into the collection frame and is collected by the collection frame, which is convenient for the staff to handle uniformly. When the waste heat is exchanged, the protective device protects the dust in the collection frame to prevent it from being blown away by the waste heat.

[0007] Preferably, the cleaning device further comprises a plurality of movable plates, wherein the plurality of movable plates are arranged inside the heat exchanger, and the plurality of movable plates correspond to the heat exchange tubes one by one, and the sides of the movable plates close to each other are fixedly connected to the same connecting plate, and a driving mechanism is provided inside the heat exchanger, and the output end of the driving mechanism is threadedly connected to one of the connecting plates, and a reserved hole is provided at the movable plate corresponding to the heat exchange tube, and a fixing box is fixedly connected to one side of the movable plate, and a circular groove is provided on the upper surface of the fixing box, and the fixing box is rotatably connected to a rotating rod by means of the circular groove, and the rotating rod The arc surface is fixedly connected to the main gear, and the arc surface of the rotating rod is wrapped with a pull rope, one end of the pull rope is fixedly connected to the top of the heat exchanger, the fixed box is fixedly connected to the coil spring by means of the circular groove, one end of the coil spring is fixedly connected to the rotating rod, the movable plate is rotatably connected to the corresponding reserved hole with an outer gear ring, several of the outer gear rings are meshed with each other, the main gear is meshed with one of the outer gear rings, three pads are fixedly connected to the inside of the outer gear ring, the three pads are distributed in a circle, one side of the pad is fixedly connected to a slave gear, and one side of the slave gear is fixedly connected to a cleaning roller.

[0008] The effects achieved by the above components are as follows: when the heat exchange tube needs to be cleaned, the staff moves the movable plate and the connecting plate downward through the driving mechanism. At this time, the pull rope rotates the rotating rod, the coil spring inside the circular groove of the fixed box is deformed, the rotating rod rotates the main gear, and the main gear rotates several outer gear rings. The cleaning roller on the outer gear ring pad moves downward and rotates around the heat exchange tube, thereby achieving the effect of cleaning the heat exchange tube. Then, the driving mechanism moves the movable plate upward, and under the action of the coil spring reset force, the rotating rod moves in the opposite direction, the rotating rod rewinds the pull rope, and the main gear rotates in the opposite direction with the slave gear, and the cleaning roller continues to clean the heat exchange tube. The cleaning roller arranged by the cleaning device moves up and down around the heat exchange tube and rotates, thereby achieving the effect of cleaning the heat exchange tube, thereby preventing the dirt from sticking to the outer wall of the heat exchange tube after long-term use, thereby affecting the heat exchange efficiency.

[0009] Preferably, a slider is fixedly connected to one end of the movable plate, a slide rail is fixedly connected to a portion of the heat exchanger corresponding to the slider, and the slider is slidably adapted to the inside of the slide rail.

[0010] The effect achieved by the above components is: by moving the slider of the moving plate inside the slide rail, the moving direction of the moving plate is restricted, thereby preventing the moving plate from sliding.

[0011] Preferably, a bracket is fixedly connected to the upper surface of the fixing box, and the fixing box is rotatably connected to a guide wheel by means of the bracket, and the guide wheel and the pull rope are in contact with each other.

[0012] The effect achieved by the above components is: the moving direction of the pull rope is adjusted through the guide wheel on the bracket, which makes it convenient for the rotating rod to wind the pull rope.

[0013] Preferably, the movable plate is fixedly connected with an inner gear ring by means of a reserved hole, the inner gear ring is meshed with the slave gear, and the cleaning roller is located at the eccentric circle of the slave gear.

[0014] The effect achieved by the above components is: when the outer gear ring rotates around the heat exchange tube with the pad and the slave gear, the slave gear rotates on itself driven by the inner gear ring. Since the cleaning roller is located at the eccentric circle of the slave gear, when the cleaning roller rotates on the slave gear, the bristles on the cleaning roller sometimes approach the heat exchange tube and sometimes move away from the heat exchange tube, thereby improving the cleaning efficiency of the heat exchange tube.

[0015] Preferably, the blowing device includes a cavity, which is opened inside a fixed box, the fixed box is fixedly connected to an air jet pipe by means of the cavity, the air jet pipe is fixedly connected to an air outlet pipe at a position corresponding to the reserved hole, the upper surface of the fixed box is fixedly connected to an air inlet pipe, the interior of the fixed box is slidably connected to a piston, the upper surface of the piston is fixedly connected to a support rod, one end of the support rod is fixedly connected to a limiting frame, one end of the rotating rod is fixedly connected to a first conical tooth, one side of the bracket is rotatably connected to a second conical tooth, the second conical tooth and the first conical tooth are meshed with each other, one side of the second conical tooth is fixedly connected to a disc, one side of the disc is fixedly connected to a limiting buckle, and the limiting buckle is located inside the limiting frame.

[0016] The effects achieved by the above components are: when the rotating rod rotates, the rotating rod rotates with the first conical tooth and the second conical tooth, the second conical tooth rotates with the disc and the limit buckle, the limit buckle moves the limit frame, the support rod and the piston up and down, when the piston moves upward, the cavity inside the fixed box becomes larger, and air enters the cavity through the air inlet pipe, when the piston moves downward, the cavity inside the fixed box becomes smaller, and the air in the cavity is sprayed onto the bristles on the cleaning roller through the jet pipe and the air outlet pipe, and the bristles on the cleaning roller shake, and the bristles on the cleaning roller inside the reserved hole are blown by the blowing device to make the bristles on the cleaning roller shake, thereby preventing impurities from sticking to the bristles of the cleaning roller, which causes the cleaning roller to fail to clean the heat exchange tube.

[0017] Preferably, a filter screen is fixedly connected to the interior of the air intake pipe, and the size of the filter screen is adapted to the inner size of the air intake pipe.

[0018] The effect achieved by the above components is: by setting the filter net, the impurities in the air are filtered out, thereby preventing the impurities and air from entering the cavity of the fixed box together.

[0019] Preferably, a plurality of fixed tubes are fixedly connected to the arc surface of the air injection tube, and the fixed tubes are fixedly connected to the movable plate.

[0020] The effects achieved by the above components are: the jet pipe is fixed by setting the fixing pipe, so that the jet pipe is prevented from shaking after long-term use, and the stability of the jet pipe is improved.

[0021] Preferably, the auxiliary device includes a winding shaft, which is rotatably connected to the inside of the heat exchanger, and one end of the winding shaft located outside the heat exchanger is fixedly connected to a handle, and a protective cloth is wrapped around the arc surface of the winding shaft, and one end of the protective cloth is fixedly connected to a rectangular plate, and a fixed sail is fixedly connected to the upper surface of the rectangular plate, and two symmetrical guide rails are fixedly connected to the heat exchanger corresponding to the rectangular plate, and both ends of the rectangular plate are slidably adapted to the inner wall of the guide rail.

[0022] The effects achieved by the above components are as follows: after the waste heat enters the heat exchanger, the waste heat blows the fixed sail, the fixed sail moves with the rectangular plate, the rectangular plate moves along the guide rail, and finally the rectangular plate covers the collecting frame with the protective cloth, thereby achieving the effect of protecting the impurities inside the collecting frame and preventing the waste heat from blowing out the impurities in the collecting frame. Before the bristles clean the heat exchange tubes, the staff turns the handle, and the handle rotates the winding shaft, and the winding shaft rolls up the protective cloth. The auxiliary device achieves the effect of protecting the impurities in the collecting frame and preventing the impurities from being blown out by the waste heat during heat exchange, thereby causing dust to float around inside the heat exchanger.

[0023] A method for using a waste heat recovery device in a dried fruit processing workshop comprises the following steps:

[0024] Step 1: When it is necessary to process the waste heat generated by dried fruit processing, the staff first connects the external pipe to the water inlet pipe, and the water in the external pipe enters the interior of the heat exchange tube through the water inlet pipe. Then the staff turns on the fan at the air inlet of the heat exchanger, and the waste heat generated by dried fruit processing enters the interior of the heat exchanger through the fan. When the waste heat contacts the heat exchange tube, the heat of the waste heat is absorbed by the water inside the heat exchange tube, and finally the water inside the heat exchange tube flows out through the water outlet pipe;

[0025] Step 2: When dirt is deposited on the outer wall of the heat exchange tube, the cleaning device cleans the dirt with the bristles, and the air blowing device blows air to the bristles to prevent impurities from sticking to the bristles, which makes it inconvenient to clean the bristles next time;

[0026] Step 3: The cleaned dust falls into the collection frame and is collected by the collection frame, which is convenient for the staff to handle uniformly. When the waste heat is exchanged, the protective device protects the dust in the collection frame to prevent it from being blown away by the waste heat. In summary, the beneficial effects of the present invention are:

[0027] In the present invention, the cleaning roller arranged in the cleaning device moves up and down and rotates around the heat exchange tube, thereby achieving the effect of cleaning the heat exchange tube, preventing the dirt from adhering to the outer wall of the heat exchange tube after long-term use, thereby affecting the heat exchange efficiency.

[0028] In the present invention, the bristles on the cleaning roller inside the reserved hole are blown by the blowing device to make the bristles on the cleaning roller shake, thereby preventing impurities from sticking to the bristles of the cleaning roller, thereby causing the cleaning roller to be unable to clean the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2For the present invention Figure 2 A cross-sectional view of

[0031] Figure 3 It is a schematic diagram of the three-dimensional structure of the internal parts of the heat exchanger of the present invention;

[0032] Figure 4 It is a schematic diagram of the three-dimensional structure of the movable plate of the present invention;

[0033] Figure 5 For the present invention Figure 4 A partial cross-sectional view of

[0034] Figure 6 It is a schematic diagram of the three-dimensional structure of the cleaning roller of the present invention;

[0035] Figure 7 It is a schematic diagram of the three-dimensional structure of the fixing box of the present invention;

[0036] Figure 8 For the present invention Figure 7 A magnified image of point A;

[0037] Fig. 9 For the present invention Figure 7 Another side cross-sectional view;

[0038] Fig.10 It is a schematic diagram of the three-dimensional structure of the auxiliary device of the present invention.

[0039] Legend: 1. Heat exchanger; 2. Cleaning device; 21. Moving plate; 22. Connecting plate; 23. Fixing box; 24. Driving mechanism; 25. Coil spring; 26. Rotating rod; 27. Pull rope; 28. Main gear; 29. ​​Outer gear ring; 210. Pad; 211. Slave gear; 212. Cleaning roller; 213. Inner gear ring; 214. Bracket; 215. Guide wheel; 216. Sliding block; 217. Slide rail; 218. Reserved hole; 3. Air blowing device; 31. Cavity; 32 , jet pipe; 33, air outlet pipe; 34, first conical tooth; 35, second conical tooth; 36, disc; 37, limit buckle; 38, limit frame; 39, piston; 310, support rod; 311, fixed pipe; 312, air inlet pipe; 313, filter screen; 4, auxiliary device; 41, reel; 42, protective cloth; 43, rectangular plate; 44, fixed sail; 45, guide rail; 46, handle; 5, fan; 6, heat exchange tube; 7, water inlet pipe; 8, water outlet pipe; 9, collection frame. DETAILED DESCRIPTION

[0040] Reference Figure 1-10As shown, the present invention provides a technical solution: a waste heat recovery device for a dried fruit processing workshop, comprising a heat exchanger 1, an air inlet of the heat exchanger 1 is fixedly connected to a fan 5, a plurality of serpentine heat exchange tubes 6 are fixedly connected inside the heat exchanger 1, one end of the plurality of heat exchange tubes 6 is fixedly connected to the same water inlet pipe 7, the other end of the plurality of heat exchange tubes 6 is fixedly connected to the same water outlet pipe 8, a collecting frame 9 is slidably provided at the bottom of the heat exchanger 1, a cleaning device 2 for cleaning the heat exchange tubes 6 is provided inside the heat exchanger 1, the cleaning device 2 comprises a cleaning roller 212, a plurality of bristles are fixedly connected to the arc surface of the cleaning roller 212, a blowing device 3 for cleaning the bristles on the cleaning roller 212 is provided inside the heat exchanger 1, and an auxiliary device 4 for protecting dust inside the collecting frame 9 is provided inside the heat exchanger 1. When it is necessary to process the waste heat generated by the dried fruit processing, the staff first connects the external pipe to the water inlet pipe 7, and the water in the external pipe enters the interior of the heat exchange tube 6 through the water inlet pipe 7. Then the staff turns on the fan 5 at the air inlet of the heat exchanger 1, and the waste heat generated by the dried fruit processing enters the interior of the heat exchanger 1 through the fan 5. When the waste heat contacts the heat exchange tube 6, the heat of the waste heat is absorbed by the water inside the heat exchange tube 6, and finally the water inside the heat exchange tube 6 flows out through the water outlet pipe 8. When dirt is deposited on the outer wall of the heat exchange tube 6, the cleaning device 2 cleans the dirt with bristles, and the blowing device 3 blows air to the bristles to prevent impurities from sticking to the bristles, which makes it inconvenient to clean the bristles next time. The cleaned dust falls into the collection frame 9 and is collected by the collection frame 9, which is convenient for the staff to handle it uniformly. When the waste heat is exchanged, the protective device protects the dust in the collection frame 9 to prevent it from being blown away by the waste heat.

[0041] Reference Figure 1-10As shown, the cleaning device 2 also includes a plurality of movable plates 21, which are arranged inside the heat exchanger 1, and the plurality of movable plates 21 correspond to the heat exchange tubes 6 one by one. The sides of the movable plates 21 close to each other are fixedly connected with the same connecting plate 22. A driving mechanism 24 is provided inside the heat exchanger 1, and the output end of the driving mechanism 24 is threadedly connected with one of the connecting plates 22. A reserved hole 218 is provided at the movable plate 21 corresponding to the heat exchange tube 6. A fixed box 23 is fixedly connected to one side of the movable plate 21, and a circular groove is provided on the upper surface of the fixed box 23. The fixed box 23 is rotatably connected to a rotating rod 26 by means of the circular groove, and the circular arc surface of the rotating rod 26 is fixedly connected There is a main gear 28, and a pull rope 27 is wound around the arc surface of the rotating rod 26. One end of the pull rope 27 is fixedly connected to the top of the heat exchanger 1. The fixed box 23 is fixedly connected to the coil spring 25 by means of the circular groove. One end of the coil spring 25 is fixedly connected to the rotating rod 26. The movable plate 21 is rotatably connected to the reserved hole 218 corresponding to the outer gear ring 29. Several outer gear rings 29 are meshed with each other. The main gear 28 is meshed with one of the outer gear rings 29. Three pads 210 are fixedly connected to the inside of the outer gear ring 29. The three pads 210 are distributed in a circle. One side of the pad 210 is fixedly connected to a slave gear 211, and one side of the slave gear 211 is fixedly connected to a cleaning roller 212. When the heat exchange tube 6 needs to be cleaned, the staff moves the movable plate 21 and the connecting plate 22 downward through the driving mechanism 24. At this time, the pull rope 27 rotates the rotating rod 26, and the coil spring 25 inside the circular groove of the fixing box 23 is deformed. The rotating rod 26 rotates the main gear 28, and the main gear 28 rotates with a plurality of outer gear rings 29. The cleaning roller 212 on the pad 210 of the outer gear ring 29 moves downward around the heat exchange tube 6 and rotates, achieving the effect of cleaning the heat exchange tube 6. Then the driving mechanism 24 moves the movable plate 21 and the connecting plate 22 downward, and the pulling rope 27 rotates the rotating rod 26. The plate 21 moves upward, and under the action of the restoring elastic force of the coil spring 25, the rotating rod 26 moves in the opposite direction, the rotating rod 26 rewinds the pull rope 27, and the main gear 28 rotates with the slave gear 211 in the opposite direction, and the cleaning roller 212 continues to clean the heat exchange tube 6. The cleaning roller 212 arranged by the cleaning device 2 moves up and down around the heat exchange tube 6 and rotates, thereby achieving the effect of cleaning the heat exchange tube 6, avoiding the situation that dirt sticks to the outer wall of the heat exchange tube 6 after long-term use, thereby affecting the heat exchange efficiency.

[0042] Reference Figure 1-10As shown, a slider 216 is fixedly connected to one end of the movable plate 21, and a slide rail 217 is fixedly connected to the position of the heat exchanger 1 corresponding to the slider 216, and the slider 216 is slidably adapted to the inside of the slide rail 217. The slider 216 of the movable plate 21 moves inside the slide rail 217, so as to limit the moving direction of the movable plate 21 and prevent the movable plate 21 from sliding. A bracket 214 is fixedly connected to the upper surface of the fixed box 23, and the fixed box 23 is rotatably connected to the guide wheel 215 by means of the bracket 214, and the guide wheel 215 and the pull rope 27 are fitted to each other. The guide wheel 215 on the bracket 214 is used to adjust the moving direction of the pull rope 27, so that the rotating rod 26 can be conveniently wound around the pull rope 27. The movable plate 21 is fixedly connected to the inner gear ring 213 by means of the reserved hole 218, and the inner gear ring 213 is meshed with the slave gear 211, and the cleaning roller 212 is located at the eccentric circle of the slave gear 211. When the outer gear ring 29 rotates around the heat exchange tube 6 with the pad 210 and the slave gear 211, the slave gear 211 rotates on its own driven by the inner gear ring 213. Since the cleaning roller 212 is located at the eccentric circle of the slave gear 211, when the cleaning roller 212 rotates on the slave gear 211, the bristles on the cleaning roller 212 sometimes approach the heat exchange tube 6 and sometimes move away from the heat exchange tube 6, thereby improving the cleaning efficiency of the heat exchange tube 6.

[0043] Reference Figure 1-10As shown, the blowing device 3 includes a cavity 31, which is opened inside the fixed box 23. The fixed box 23 is fixedly connected to the air injection pipe 32 by means of the cavity 31. The air injection pipe 32 is fixedly connected to the air outlet pipe 33 corresponding to the reserved hole 218. The upper surface of the fixed box 23 is fixedly connected to the air inlet pipe 312. The interior of the fixed box 23 is slidably connected to a piston 39. The upper surface of the piston 39 is fixedly connected to a support rod 310. One end of the support rod 310 is fixedly connected to a limiting frame 38. One end of the rotating rod 26 is fixedly connected to a first conical tooth 34. One side of the bracket 214 is rotatably connected to a second conical tooth 35. The second conical tooth 35 and the first conical tooth 34 are meshed with each other. One side of the second conical tooth 35 is fixedly connected to a disk 36. One side of the disk 36 is fixedly connected to a limiting buckle 37. The limiting buckle 37 is located inside the limiting frame 38. When the rotating rod 26 rotates, the rotating rod 26 rotates with the first conical tooth 34 and the second conical tooth 35, and the second conical tooth 35 rotates with the disc 36 and the limit buckle 37, and the limit buckle 37 moves up and down with the limit frame 38, the support rod 310 and the piston 39. When the piston 39 moves upward, the inside of the cavity 31 of the fixed box 23 becomes larger, and air enters the cavity 31 through the air inlet pipe 312. When the piston 39 moves downward, the inside of the cavity 31 of the fixed box 23 becomes smaller, and the air in the cavity 31 is sprayed onto the bristles on the cleaning roller 212 through the jet pipe 32 and the air outlet pipe 33, and the bristles on the cleaning roller 212 shake. The bristles on the cleaning roller 212 in the reserved hole 218 are blown by the blowing device 3 to make the bristles on the cleaning roller 212 shake, so as to prevent impurities from sticking to the bristles of the cleaning roller 212, thereby causing the cleaning roller 212 to be unable to clean the heat exchange tube 6.

[0044] Reference Figure 1-10 As shown, a filter screen 313 is fixedly connected to the inside of the air intake pipe 312, and the size of the filter screen 313 is adapted to the inner size of the air intake pipe 312. By setting the filter screen 313, the effect of filtering impurities in the air is achieved, and the impurities and air are prevented from entering the cavity 31 of the fixed box 23 together. A plurality of fixed tubes 311 are fixedly connected to the arc surface of the air injection pipe 32, and the fixed tubes 311 are fixedly connected to the movable plate 21. By setting the fixed tubes 311, the effect of fixing the air injection pipe 32 is achieved, and the air injection pipe 32 is prevented from shaking after long-term use, and the stability of the air injection pipe 32 is improved.

[0045] Reference Figure 1-10As shown, the auxiliary device 4 includes a winding shaft 41, which is rotatably connected to the inside of the heat exchanger 1, and one end of the winding shaft 41 located outside the heat exchanger 1 is fixedly connected to a handle 46, and the arc surface of the winding shaft 41 is wrapped with a protective cloth 42, and one end of the protective cloth 42 is fixedly connected to a rectangular plate 43, and the upper surface of the rectangular plate 43 is fixedly connected to a fixed sail 44, and two mutually symmetrical guide rails 45 are fixedly connected to the heat exchanger 1 corresponding to the rectangular plate 43, and the two ends of the rectangular plate 43 are slidably adapted to the inner wall of the guide rail 45. After the waste heat enters the heat exchanger 1, the waste heat blows the fixed sail 44, and the fixed sail 44 moves with the rectangular plate 43, and the rectangular plate 43 moves along the guide rail 45. Finally, the rectangular plate 43 covers the collecting frame 9 with the protective cloth 42, thereby achieving the effect of protecting the impurities inside the collecting frame 9 and preventing the waste heat from blowing out the impurities in the collecting frame 9. Before the brush cleans the heat exchange tube 6, the staff turns the handle 46, and the handle 46 rotates with the winding shaft 41, and the winding shaft 41 rolls up the protective cloth 42. The auxiliary device 4 achieves the effect of protecting the impurities in the collecting frame 9, thereby preventing the impurities from being blown out by the waste heat during heat exchange, thereby causing dust to float around inside the heat exchanger 1.

[0046] Working principle: When the waste heat generated by the dried fruit processing needs to be processed, the staff first connects the external pipe to the water inlet pipe 7, and the water in the external pipe enters the interior of the heat exchange tube 6 through the water inlet pipe 7. Then the staff turns on the fan 5 at the air inlet of the heat exchanger 1, and the waste heat generated by the dried fruit processing enters the interior of the heat exchanger 1 through the fan 5. When the waste heat contacts the heat exchange tube 6, the heat of the waste heat is absorbed by the water inside the heat exchange tube 6, and finally the water inside the heat exchange tube 6 flows out through the water outlet pipe 8.

[0047] When dirt is deposited on the outer wall of the heat exchange tube 6, the staff moves the movable plate 21 and the connecting plate 22 downward through the driving mechanism 24, and the slider 216 at one end of the movable plate 21 moves inside the slide rail 217, thereby achieving the effect of limiting the moving direction of the movable plate 21. At this time, the pull rope 27 rotates the rotating rod 26, and the coil spring 25 inside the circular groove of the fixed box 23 is deformed. The rotating rod 26 rotates with the main gear 28, and the main gear 28 rotates with several outer gear rings 29. The cleaning roller 212 on the pad 210 of the outer gear ring 29 moves downward around the heat exchange tube 6 and rotates, thereby achieving the effect of cleaning the heat exchange tube 6. The slave gear 211 rotates under the drive of the inner gear ring 213. Since the cleaning roller 212 is located at the eccentric circle of the slave gear 211, the cleaning roller 212 When the slave gear 211 rotates, the bristles on the cleaning roller 212 sometimes approach the heat exchange tube 6 and sometimes move away from the heat exchange tube 6, thereby improving the cleaning efficiency of the heat exchange tube 6. Then, the driving mechanism 24 moves the movable plate 21 upward, and under the action of the restoring elastic force of the coil spring 25, the rotating rod 26 moves in the opposite direction, and the rotating rod 26 rewinds the pull rope 27, while the main gear 28 rotates in the opposite direction with the slave gear 211, and the cleaning roller 212 continues to clean the heat exchange tube 6. The cleaned impurities fall into the collecting frame 9 for collection. The cleaning roller 212 arranged by the cleaning device 2 moves up and down and rotates around the heat exchange tube 6, thereby achieving the effect of cleaning the heat exchange tube 6, thereby preventing the dirt from sticking to the outer wall of the heat exchange tube 6 after long-term use, thereby affecting the heat exchange efficiency.

[0048] When the rotating rod 26 rotates, the rotating rod 26 rotates with the first conical tooth 34 and the second conical tooth 35, the second conical tooth 35 rotates with the disc 36 and the limit buckle 37, the limit buckle 37 moves up and down with the limit frame 38, the support rod 310 and the piston 39, when the piston 39 moves upward, the cavity 31 of the fixed box 23 becomes larger, and the air enters the cavity 31 through the air inlet pipe 312 and the filter screen 313, when the piston 39 moves downward, The inside of the cavity 31 of the fixed box 23 becomes smaller, and the air in the cavity 31 is sprayed onto the bristles on the cleaning roller 212 through the jet pipe 32 and the outlet pipe 33, and the bristles on the cleaning roller 212 shake. The bristles on the cleaning roller 212 inside the reserved hole 218 are blown by the blowing device 3 to make the bristles on the cleaning roller 212 shake, thereby preventing impurities from sticking to the bristles of the cleaning roller 212, thereby causing the cleaning roller 212 to be unable to clean the heat exchange tube 6.

[0049] After the waste heat enters the heat exchanger 1, the waste heat blows the fixed sail 44, and the fixed sail 44 moves with the rectangular plate 43, and the rectangular plate 43 moves along the guide rail 45. Finally, the rectangular plate 43 covers the collecting frame 9 with the protective cloth 42, thereby achieving the effect of protecting the impurities inside the collecting frame 9 and preventing the waste heat from blowing out the impurities in the collecting frame 9. Before the brush cleans the heat exchange tube 6, the staff turns the handle 46, and the handle 46 rotates with the winding shaft 41, and the winding shaft 41 rolls up the protective cloth 42. The auxiliary device 4 achieves the effect of protecting the impurities in the collecting frame 9, thereby preventing the impurities from being blown out by the waste heat during heat exchange, thereby causing dust to float around inside the heat exchanger 1.

Claims

1. A waste heat recovery device for a dried fruit processing workshop, comprising a heat exchanger (1), characterized in that: The air inlet of the heat exchanger (1) is fixedly connected to a fan (5), the interior of the heat exchanger (1) is fixedly connected to a plurality of serpentine heat exchange tubes (6), one end of the plurality of heat exchange tubes (6) is fixedly connected to a same water inlet pipe (7), and the other end of the plurality of heat exchange tubes (6) is fixedly connected to a same water outlet pipe (8), a collecting frame (9) is slidably inserted at the bottom of the heat exchanger (1), a cleaning device (2) for cleaning the heat exchange tubes (6) is provided inside the heat exchanger (1), the cleaning device (2) comprises a cleaning roller (212), a plurality of bristles are fixedly connected to the circular arc surface of the cleaning roller (212), a blowing device (3) for cleaning the bristles on the cleaning roller (212) is provided inside the heat exchanger (1), and an auxiliary device (4) for protecting dust inside the collecting frame (9) is provided inside the heat exchanger (1).

2. A waste heat recovery device for a dried fruit processing workshop according to claim 1, characterized in that: The cleaning device (2) further comprises a plurality of movable plates (21), the plurality of movable plates (21) being arranged inside the heat exchanger (1), the plurality of movable plates (21) corresponding to the heat exchange tubes (6) one by one, the sides of the movable plates (21) close to each other being fixedly connected to the same connecting plate (22), a driving mechanism (24) being arranged inside the heat exchanger (1), the output end of the driving mechanism (24) being threadedly connected to one of the connecting plates (22), a reserved hole (218) being provided at a position of the movable plate (21) corresponding to the heat exchange tube (6), a fixed box (23) being fixedly connected to one side of the movable plate (21), a circular groove being provided on the upper surface of the fixed box (23), the fixed box (23) being rotatably connected to a rotating rod (26) by means of the circular groove, the circular arc surface of the rotating rod (26) being fixedly connected to the main The gear (28) is a circular arc surface of a rotating rod (26) wrapped with a pull rope (27), one end of the pull rope (27) is fixedly connected to the top of the heat exchanger (1), the fixed box (23) is fixedly connected to a coil spring (25) by means of a circular groove, one end of the coil spring (25) is fixedly connected to the rotating rod (26), the movable plate (21) is rotatably connected to an outer gear ring (29) corresponding to the reserved hole (218), a plurality of the outer gear rings (29) are meshed with each other, the main gear (28) is meshed with one of the outer gear rings (29), the inner part of the outer gear ring (29) is fixedly connected with three pads (210), the three pads (210) are distributed in a circle, one side of the pad (210) is fixedly connected to a slave gear (211), and one side of the slave gear (211) is fixedly connected to a cleaning roller (212).

3. A waste heat recovery device for a dried fruit processing workshop according to claim 2, characterized in that: A slider (216) is fixedly connected to one end of the movable plate (21), and a slide rail (217) is fixedly connected to the heat exchanger (1) at a position corresponding to the slider (216), and the slider (216) is adapted to slide inside the slide rail (217).

4. The waste heat recovery device for a dried fruit processing workshop according to claim 2, characterized in that: The upper surface of the fixing box (23) is fixedly connected with a bracket (214), and the fixing box (23) is rotatably connected with a guide wheel (215) by means of the bracket (214), and the guide wheel (215) and the pull rope (27) are in contact with each other.

5. The waste heat recovery device for a dried fruit processing workshop according to claim 2, characterized in that: The movable plate (21) is fixedly connected to an inner gear ring (213) by means of a reserved hole (218); the inner gear ring (213) and the slave gear (211) are meshed with each other; and the cleaning roller (212) is located at the eccentric circle of the slave gear (211).

6. A waste heat recovery device for a dried fruit processing workshop according to claim 5, characterized in that: The blowing device (3) comprises a cavity (31), the cavity (31) is opened inside the fixed box (23), the fixed box (23) is fixedly connected to an air injection pipe (32) by means of the cavity (31), the air injection pipe (32) is fixedly connected to an air outlet pipe (33) at a position corresponding to the reserved hole (218), the upper surface of the fixed box (23) is fixedly connected to an air inlet pipe (312), the interior of the fixed box (23) is slidably connected to a piston (39), and the upper surface of the piston (39) is fixedly connected to a support rod (310) One end of the support rod (310) is fixedly connected to a limit frame (38), one end of the rotating rod (26) is fixedly connected to a first conical tooth (34), one side of the bracket (214) is rotatably connected to a second conical tooth (35), the second conical tooth (35) and the first conical tooth (34) are meshed with each other, one side of the second conical tooth (35) is fixedly connected to a disk (36), one side of the disk (36) is fixedly connected to a limit buckle (37), and the limit buckle (37) is located inside the limit frame (38).

7. The waste heat recovery device for a dried fruit processing workshop according to claim 6, characterized in that: A filter screen (313) is fixedly connected to the interior of the air intake pipe (312), and the size of the filter screen (313) is compatible with the internal size of the air intake pipe (312).

8. The waste heat recovery device for a dried fruit processing workshop according to claim 6, characterized in that: A plurality of fixed tubes (311) are fixedly connected to the arc surface of the air injection tube (32), and the fixed tubes (311) are fixedly connected to the movable plate (21).

9. The waste heat recovery device for a dried fruit processing workshop according to claim 1, characterized in that: The auxiliary device (4) comprises a reel (41), the reel (41) being rotatably connected to the interior of the heat exchanger (1), one end of the reel (41) located outside the heat exchanger (1) being fixedly connected to a handle (46), a protective cloth (42) being wrapped around the arc surface of the reel (41), one end of the protective cloth (42) being fixedly connected to a rectangular plate (43), the upper surface of the rectangular plate (43) being fixedly connected to a fixed sail (44), and two mutually symmetrical guide rails (45) being fixedly connected to the heat exchanger (1) corresponding to the rectangular plate (43), the two ends of the rectangular plate (43) being slidably fitted to the inner wall of the guide rail (45).

10. A method of use, characterized in that: A waste heat recovery device for a dry fruit processing workshop as described in any one of claims 1 to 9 comprises the following steps: Step 1: When it is necessary to process the waste heat generated by dried fruit processing, the staff first connects the external pipe to the water inlet pipe (7), and the water in the external pipe enters the interior of the heat exchange tube (6) through the water inlet pipe (7). Then the staff turns on the fan (5) at the air inlet of the heat exchanger (1), and the waste heat generated by dried fruit processing enters the interior of the heat exchanger (1) through the fan (5). When the waste heat contacts the heat exchange tube (6), the heat of the waste heat is absorbed by the water inside the heat exchange tube (6), and finally the water inside the heat exchange tube (6) flows out through the water outlet pipe (8); Step 2: When dirt is deposited on the outer wall of the heat exchange tube (6), the cleaning device (2) cleans the dirt with bristles, and the blowing device (3) blows air on the bristles to prevent impurities from sticking to the bristles, thereby making it inconvenient to clean the bristles next time; Step 3: The cleaned dust falls into the collection frame (9) and is collected by the collection frame (9), which is convenient for the staff to handle uniformly. When the waste heat is exchanged, the protective device protects the dust in the collection frame (9) to prevent it from being blown away by the waste heat.

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