Air compressor waste heat recovery device

Abstract

The present application discloses an air compressor waste heat recovery device, including a recovery shell, a first air guide plate, a plurality of heat-conducting rods, a blower, a drying assembly and a heating assembly, wherein the recovery shell is sleeved on the piston cylinder of the air compressor, and the recovery shell is not in contact with the piston cylinder; the first air guide plate is installed between the recovery shell and the piston cylinder; one end of the plurality of heat-conducting rods is installed on the first air guide plate; the blower is installed on one end of the recovery shell, and the blowing end of the blower is located in the recovery shell. The air compressor waste heat recovery device of the embodiment of the present application utilizes a drying block to dry the gas flowing into the gas storage tank, reduce the humidity of the gas, achieve the purpose of protecting the gas storage tank, and extend the life of the gas storage tank. At the same time, the heat generated by the piston cylinder is used to dry the drying block in real time to ensure that the drying block is in a continuous drying state, improve the efficiency of air drying, and further improve the protection effect of the gas storage tank.

Description

Technical Field

[0001] The present application relates to the technical field of air compressors, and in particular to a waste heat recovery device for air compressors. Background Art

[0002] Air compressors play a vital role in many fields such as industry, construction, and manufacturing. They are used to provide compressed air to drive various tools and equipment. However, during operation, air compressors will inevitably generate a lot of heat.

[0003] The heat generated by air compressors is basically discharged directly into the atmosphere. Few people recycle it. Even if someone uses it, the utilization rate is very low and the utilization method is single. A large amount of heat discharged into the atmosphere will cause energy waste.

[0004] In addition, since the air itself contains a certain amount of water vapor, when the air is compressed, its temperature rises, and then during the cooling process, the moisture in the air will condense into liquid water and remain inside the gas tank, causing internal water accumulation and promoting rust. In the related technology, a drying block is usually used to dry the extracted air, but after a certain period of drying, the drying block will reach humidity saturation and cannot continue to dry. Therefore, the drying block needs to be monitored and replaced. If it reaches the saturated state and cannot be replaced in time, the saturated drying block cannot dry the air, which will cause condensation of moisture. Summary of the invention

[0005] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0006] To this end, one purpose of the present application is to provide an air compressor waste heat recovery device, which utilizes the recovered waste heat to dry the drying block to avoid the problem that the humidity of the drying block reaches a saturated state and cannot reduce the air humidity, thereby further optimizing the purpose of protecting the air storage tank.

[0007] To achieve the above-mentioned objectives, the first aspect of the present application proposes an air compressor waste heat recovery device, comprising a recovery shell, a first air guide plate, a plurality of heat-conducting rods, a blower, a drying assembly and a heating assembly, wherein the recovery shell is sleeved on the piston cylinder of the air compressor, and the recovery shell is not in contact with the piston cylinder; the first air guide plate is installed between the recovery shell and the piston cylinder; one end of the plurality of heat-conducting rods is installed on the first air guide plate; the blower is installed on one end of the recovery shell, and the blowing end of the blower is located in the recovery shell; the drying assembly is installed on one end of the recovery shell, and the drying assembly and the blower are respectively located at two ends of the recovery shell; the heating assembly is installed on the air tank of the air compressor, and the heating assembly is located between the air tank and the recovery shell.

[0008] The drying block is used to dry the gas flowing into the gas tank to reduce the humidity of the gas, thereby protecting the gas tank and extending the life of the gas tank. At the same time, the heat generated by the piston cylinder is used to dry the drying block in real time to ensure that the drying block is continuously dry, thereby improving the efficiency of air drying and further improving the protection effect of the gas tank.

[0009] In one embodiment of the present application, the first air guide plate is spiral-shaped, and the other ends of the plurality of heat-conducting rods are fixed on the piston cylinder.

[0010] In one embodiment of the present application, the drying assembly includes an air outlet, three air outlet grooves, a rotating rod, a synchronous gear, three fixed frames, three drying blocks, a plurality of synchronous tooth grooves, a second air guide plate, a driving mechanism and a driving gear, wherein the air outlet is mounted on one end of the recovery shell, and the air outlet is connected to the recovery shell; the three air outlet grooves are equidistantly arranged on the air outlet, and the air outlet grooves are rectangular; the rotating rod is rotatably arranged on one end of the air outlet; the three fixed frames are rotatably arranged on one end of the air outlet, and the three fixed frames do not contact each other; the synchronous gear is mounted on one end of the air outlet, and the synchronous gear and the air outlet are located on the same center of a circle; the three drying blocks are mounted in the corresponding fixed frames; a plurality of synchronous tooth grooves are arranged on the corresponding fixed frames, and the synchronous gear is meshed with the synchronous tooth grooves on the corresponding fixed frames; the second air guide plate is mounted on the synchronous gear; the driving mechanism is mounted on one end of the recovery shell; the driving gear is mounted on the rotating shaft of the driving mechanism, and the driving gear is meshed with the synchronous tooth grooves.

[0011] In one embodiment of the present application, the length of the air outlet groove is less than the length of the air outlet cylinder covered by a single drying block, and the three air outlet grooves are located on one side of the corresponding drying block.

[0012] In one embodiment of the present application, one end of the air inlet pipe of the air compressor contacts the surface of the drying block, and the diameter of the air inlet pipe is less than or equal to one half of the diameter of the drying block.

[0013] In one embodiment of the present application, the second air guide plate is circular, and the second air guide plate and the corresponding drying block are not in contact with each other, and the second air guide plate is located in the middle of the three drying blocks.

[0014] In one embodiment of the present application, the heating component includes a water storage tank, an air supply pipe, a divergence box, a connecting pipe, a water flow pipe, a water supply pipe and a heat exchange tank, wherein the water storage tank is installed on the air storage tank; the air supply pipe is installed on the water storage tank, and one end of the air supply pipe is installed on the recovery shell; the divergence box is installed in the water storage tank, and the divergence box and the air supply pipe are interconnected; one end of the connecting pipe is installed in the water storage tank, and the other end of the connecting pipe is installed in the heat exchange tank; the water supply pipe is installed at the bottom of the recovery shell; the heat exchange tank is opened in the recovery shell, and one end of the water supply pipe is located in the heat exchange tank.

[0015] In one embodiment of the present application, a plurality of heat exchange holes are evenly arranged on the top of the diverging box.

[0016] In one embodiment of the present application, a limited wind plate is rotatably connected in the air outlet slot.

[0017] In one embodiment of the present application, a humidity sensor is installed inside the drying block.

[0018] Compared with the prior art, the beneficial effects of this application are:

[0019] The recovered waste heat is used to dry the drying block to avoid the problem that the humidity of the drying block reaches saturation and cannot reduce the air humidity, further optimizing the purpose of protecting the gas tank. At the same time, when the drying block reaches the dryness level, the heat recovery method can be adjusted to reduce the heat required for drying the drying block, increase the amount of waste heat recovered by other recovery structures, and optimize the efficiency of waste heat recovery.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0022] Figure 1 This is a schematic structural diagram of an air compressor waste heat recovery device according to an embodiment of the present application;

[0023] Figure 2 is a three-dimensional diagram of a gas storage tank according to another embodiment of the present application;

[0024] Figure 3 is a cross-sectional view of a recovery shell according to one embodiment of the present application;

[0025] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 A perspective view of a recycling shell according to an embodiment of the present application;

[0027] Figure 6 A schematic diagram of a partial structure of a recycling shell according to an embodiment of the present application;

[0028] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0029] Figure 8 It is a partial structural schematic diagram of a drying component according to an embodiment of the present application;

[0030] Fig. 9 It is a cross-sectional view of a water storage tank according to one embodiment of the present application.

[0031] As shown in the figure: 1. Air storage tank; 3. Piston cylinder; 31. Air inlet pipe; 41. Recovery shell; 42. First air guide plate; 43. Heat conduction rod; 44. Hair dryer; 45. Drying assembly; 451. Air outlet; 452. Air outlet slot; 453. Rotating rod; 454. Synchronous gear; 455. Fixed frame; 456. Drying block; 457. Synchronous tooth groove; 458. Second air guide plate; 459. Driving mechanism; 4510. Active gear; 46. Heating assembly; 461. Water storage tank; 462. Air supply pipe; 463. Divergence box; 464. Connecting pipe; 465. Water pipe; 466. Water supply pipe; 467. Heat exchange slot. DETAILED DESCRIPTION

[0032] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0033] The air compressor waste heat recovery device according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0034] like Figure 1-Figure 9 As shown, the air compressor waste heat recovery device of the embodiment of the present application includes a recovery shell 41, a first air guide plate 42, a plurality of heat-conducting rods 43, a blower 44, a drying component 45 and a heating component 46, wherein the recovery shell 41 is sleeved on the piston cylinder 3 of the air compressor, and the recovery shell 41 is not in contact with the piston cylinder 3.

[0035] It should be noted that the recovery shell 41, the first air guide plate 42 and the multiple heat-conducting rods 43 are all made of materials with good thermal conductivity coefficients, preferably copper and aluminum, and other materials with good thermal conductivity can also be used, so that the heat generated by the piston cylinder 3 can be quickly conducted to the recovery shell 41, the first air guide plate 42 and the heat-conducting rods 43, so that the heat of the wind can be increased when the wind comes into contact with the recovery shell 41, the first air guide plate 42 and the heat-conducting rods 43.

[0036] The first air guide plate 42 is installed between the recovery shell 41 and the piston cylinder 3. One end of a plurality of heat-conducting rods 43 is installed on the first air guide plate 42. The blower 44 is installed on one end of the recovery shell 41, and the blowing end of the blower 44 is located in the recovery shell 41. The drying component 45 is installed on one end of the recovery shell 41, and the drying component 45 and the blower 44 are respectively located at both ends of the recovery shell 41. The heating component 46 is installed on the air storage tank 1 of the air compressor, and the heating component 46 is located between the air storage tank 1 and the recovery shell 41.

[0037] Specifically, during the actual operation, the piston cylinder 3 will generate a large amount of heat, but the heat energy cannot be well utilized and is directly lost.

[0038] While the piston cylinder 3 is working, the hair dryer 44 is controlled by the control switch to blow air toward the inside of the recovery shell 41. After the air enters the recovery shell 41, it rotates and flows along the surface of the piston cylinder 3 under the action of the first air guide plate 42. While flowing, the air comes into contact with the piston cylinder 3, and is heated by the working piston cylinder 3. The air then slowly flows toward the other end of the recovery shell 41, and finally the residual heat is utilized through the drying component 45.

[0039] In one embodiment of the present application, Figure 4 As shown, the first air guide plate 42 is spiral-shaped, and the other ends of the plurality of heat-conducting rods 43 are fixed on the piston cylinder 3 .

[0040] It should be noted that the spiral first air guide plate 42 can guide the wind entering the recovery shell 41, increase the flow path and flow time of the wind, thereby increasing the temperature of the wind as much as possible and improving the efficiency of waste heat recovery, and the multiple heat-conducting rods 43 can increase the contact area between the wind and the first air guide plate 42, further improving the efficiency of waste heat recovery.

[0041] In one embodiment of the present application, Figure 5-Figure 8As shown, the drying component 45 includes an air outlet cylinder 451, three air outlet grooves 452, a rotating rod 453, a synchronous gear 454, three fixed frames 455, three drying blocks 456, a plurality of synchronous tooth grooves 457, a second air guide plate 458, a driving mechanism 459 and a driving gear 4510, wherein the air outlet cylinder 451 is installed on one end of the recovery shell 41, and the air outlet cylinder 451 is connected to the recovery shell 41.

[0042] It should be noted that the present application first uses wind for heat recovery. Although the thermal conductivity of wind is limited, the temperature of the wind heated by the piston cylinder 3 can reach the temperature for drying the drying block 456. Therefore, the recovery of waste heat by wind can achieve the ideal purpose and effect.

[0043] Three air outlet grooves 452 are equidistantly arranged on the air outlet cylinder 451, and the air outlet grooves 452 are rectangular. The rotating rod 453 is rotatably arranged on one end of the air outlet cylinder 451. Three fixed frames 455 are rotatably arranged on one end of the air outlet cylinder 451, and the three fixed frames 455 do not contact each other. The synchronous gear 454 is installed on one end of the air outlet cylinder 451, and the synchronous gear 454 and the air outlet cylinder 451 are located on the same center of a circle. Three drying blocks 456 are installed in corresponding fixed frames 455.

[0044] It should be noted that both the second air guide plate 458 and the drying block 456 adopt a detachable structure. The second air guide plate 458 is disassembled in order to disassemble the drying block 456, and the drying block 456 is disassembled because the drying block 456 is a consumable item and needs to be replaced regularly. Its detachable structure can be achieved by snap-on or other methods.

[0045] A plurality of synchronous tooth grooves 457 are provided on the corresponding fixing frame 455, and the synchronous gear 454 is meshed with the synchronous tooth grooves 457 on the corresponding fixing frame 455. The second air guide plate 458 is mounted on the synchronous gear 454. The driving mechanism 459 is mounted on one end of the recovery shell 41.

[0046] It should be noted that the synchronous tooth grooves 457 on the three fixed frames 455 are meshed with the synchronous gears 454. When one fixed frame 455 rotates, the three fixed frames 455 will be driven to rotate under the action of the synchronous gear 454. Therefore, when the output end of the driving mechanism 459 drives the active gear 4510 to rotate, the three fixed frames 455 will rotate, and then the wind blown out from the three air outlet grooves 452 can be used to comprehensively dry the drying blocks 456 inside the three fixed frames 455. The driving mechanism 459 adopts a rotating motor.

[0047] The driving gear 4510 is mounted on the rotating shaft of the driving mechanism 459 , and the driving gear 4510 is meshed with the synchronous tooth groove 457 .

[0048] Specifically, during actual use, the air entering the air inlet pipe 31 from the outside is filtered through the drying block 456 to reduce the humidity in the air. In order to avoid the drying block 456 being in a saturated state, the drying block 456 needs to be dried. During drying, the hot air generated above will flow into the air outlet tube 451, and then flow out from the air outlet groove 452 opened at one end of the air outlet tube 451. The outflowing hot air will dry the drying block 456 on one side of the air outlet groove 452.

[0049] While drying the drying block 456, the output end of the driving mechanism 459 is controlled to rotate, and the rotation of the output end of the driving mechanism 459 will drive the driving gear 4510 to rotate. Since the driving gear 4510 is engaged with the synchronous tooth groove 457, when the driving gear 4510 rotates, it will drive the fixed frame 455 to rotate, and the rotation of the fixed frame 455 will drive the drying block 456 to rotate. The rotation of the drying block 456 can make the hot air discharged from the air outlet groove 452 to fully dry the drying block 456.

[0050] In one embodiment of the present application, Figure 8 As shown, the length of the air outlet groove 452 is less than the length of the air outlet cylinder 451 covered by a single drying block 456 , and the three air outlet grooves 452 are located on one side of the corresponding drying block 456 .

[0051] It should be noted that the length of the air outlet groove 452 cannot be greater than the length of the air outlet tube 451 covered by the drying block 456. This is because the air outlet groove 452 is opened on the surface of one end of the air outlet tube 451, and the air outlet groove 452 is used to dry the drying block 456. Therefore, in order to ensure a good drying effect and not waste hot air, the length of the air outlet groove 452 should be the same as the covering length of the drying block 456 and the air outlet tube 451.

[0052] In one embodiment of the present application, Figure 8 As shown, one end of the air intake pipe 31 of the air compressor contacts the surface of the drying block 456 , and the diameter of the air intake pipe 31 is less than or equal to one half of the diameter of the drying block 456 .

[0053] It should be noted that, in order to reduce the humidity of the air entering the gas storage tank 1, the present application adopts a rotary drying block 456 to dehumidify the air, and while rotating and dehumidifying, the drying block 456 is also dried by the air outlet groove 452. Therefore, in order to ensure that the air entering the gas storage tank 1 is dehumidified and the drying block 456 is dried, the maximum diameter of the air inlet pipe 31 is half of the diameter of the drying block 456, and the maximum length of the air outlet groove 452 is half of the diameter of the drying block 456.

[0054] In one embodiment of the present application, Figure 5As shown, the second air guide plate 458 is circular, and the second air guide plate 458 and the corresponding drying blocks 456 do not contact each other. The second air guide plate 458 is located in the middle of the three drying blocks 456.

[0055] It can be understood that after the wind inside the air outlet groove 452 dries the drying block 456, under the restriction of the second air guide plate 458, the hot air can only flow from the second air guide plate 458 and the air outlet cylinder 451 in the direction away from the synchronous gear 454. When the hot air flows between the second air guide plate 458 and the air outlet cylinder 451, it will also dry the drying block 456, further improving the drying effect of the drying block 456.

[0056] In one embodiment of the present application, Fig. 9 As shown, the heating assembly 46 includes a water storage tank 461, an air supply pipe 462, a diverging box 463, a connecting pipe 464, a water flow pipe 465, a water supply pipe 466 and a heat exchange tank 467, wherein the water storage tank 461 is installed on the air storage tank 1.

[0057] It should be noted that in the initial state, there needs to be a certain amount of water inside the water tank 461, and in subsequent use, a continuous water supply needs to be provided using the water supply pipe 466. However, a certain interval is required during the water supply process. This interval is used to discharge the air inside the water tank 461 and reduce the pressure inside the water tank 461. The suspended water supply allows the air to enter the interior of the water pipe 465 through the connecting pipe 464 and the heat exchange tank 467, and finally complete the air pressure relief.

[0058] The air supply pipe 462 is installed on the water storage tank 461, and one end of the air supply pipe 462 is installed on the recovery shell 41. The divergence box 463 is installed in the water storage tank 461, and the divergence box 463 and the air supply pipe 462 are communicated with each other. One end of the connecting pipe 464 is installed in the water storage tank 461, and the other end of the connecting pipe 464 is installed in the heat exchange tank 467.

[0059] It should be noted that one end of the connecting pipe 464 inside the water tank 461 is located in the water. When the pressure inside the water tank 461 increases, the water flows into the heat exchange tank 467 through the connecting pipe 464 under the action of the pressure, and the other end of the connecting pipe 464 is installed in the middle position of the top of the heat exchange tank 467. Therefore, when water flows out from one end of the connecting pipe 464, the water can flow to both sides with the connecting pipe 464 as the center, that is, with the connecting pipe 464 as the center, it flows to the heat exchange tanks 467 on both sides of the connecting pipe 464, so that the inside of the heat exchange tank 467 is flowed by water.

[0060] The water supply pipe 466 is installed at the bottom of the recovery shell 41. The heat exchange tank 467 is opened in the recovery shell 41, and one end of the water supply pipe 466 is located in the heat exchange tank 467.

[0061] Specifically, in actual use, wind can only carry a part of the heat. In order to improve the recovery rate of waste heat, a heating component 46 is provided. After the hair dryer 44 blows wind into the recovery shell 41, a part of the wind will enter the divergence box 463 through the air supply pipe 462, flow out through the divergence box 463 and make initial contact with water, so that the hot air heats the water. At the same time, the wind entering the water storage tank 461 will increase the pressure inside the water storage tank 461. Since one end of the connecting pipe 464 is in the water, the water will enter the heat exchange tank 467 under the action of pressure, and fully contact the recovery shell 41 inside the heat exchange tank 467 to heat the water. After heating, the water flows to the bottom of the heat exchange tank 467, and then flows to the place of use through the water flow pipe 465.

[0062] In one embodiment of the present application, Fig. 9 As shown, a plurality of heat exchange holes are evenly arranged on the top of the diverging box 463 .

[0063] It should be noted that the multiple heat exchange holes on the top of the diverging box 463 can diverge the hot air inside the diverging box 463, so that the air inside the diverging box 463 flows out from the multiple heat exchange holes, thereby increasing the contact area between air and water and improving the heat exchange efficiency.

[0064] In one embodiment of the present application, Fig. 9 As shown, the air outlet slot 452 is rotatably connected to a limited wind plate.

[0065] In one embodiment of the present application, Fig. 9 As shown, a humidity sensor is installed inside the drying block 456.

[0066] It should be noted that the wind limiting plate controls the air output from the air outlet slot 452. The air output from the air outlet slot 452 can be adjusted by driving the rotation angle of the wind limiting plate through a motor. When the humidity sensor detects that the humidity of the drying block 456 meets the use requirements, the air output from the air outlet slot 452 can be appropriately reduced to avoid the drying of the drying block 456 reaching a saturated state, so that most of the heat is recovered through the heating component 46 to improve the efficiency of waste heat recovery.

[0067] In summary, the air compressor waste heat recovery device of the embodiment of the present application utilizes the drying block 456 to dry the gas flowing into the gas storage tank 1, thereby reducing the humidity of the gas, thereby achieving the purpose of protecting the gas storage tank 1 and extending the life of the gas storage tank 1. At the same time, the heat generated by the piston cylinder 3 is used to dry the drying block 456 in real time to ensure that the drying block 456 is in a continuous drying state, thereby improving the efficiency of air drying and further improving the protection effect of the gas storage tank 1.

[0068] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0070] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present application.

Claims

1. An air compressor waste heat recovery device, characterized in that: It includes a recovery shell, a first air guide plate, a plurality of heat-conducting rods, a blower, a drying component and a heating component, wherein: The recovery shell is sleeved on the piston cylinder of the air compressor, and the recovery shell is not in contact with the piston cylinder; The first air guide plate is installed between the recovery shell and the piston cylinder; One end of a plurality of heat-conducting rods is mounted on the first air guide plate; The blower is mounted on one end of the recovery shell, and the blowing end of the blower is located inside the recovery shell; The drying component is installed on one end of the recovery shell, and the drying component and the blower are respectively located at two ends of the recovery shell; The heating assembly is mounted on the air storage tank of the air compressor, and the heating assembly is located between the air storage tank and the recovery shell; The heating assembly includes a water storage tank, an air supply pipe, a diverging box, a connecting pipe, a water flow pipe, a water supply pipe and a heat exchange tank, wherein: The water storage tank is installed on the gas storage tank; The air supply pipe is installed on the water storage tank, and one end of the air supply pipe is installed on the recovery shell; The divergence box is installed in the water storage tank, and the divergence box and the air supply pipe are interconnected; One end of the connecting pipe is installed in the water storage tank, and the other end of the connecting pipe is installed in the heat exchange tank; The water supply pipe is installed at the bottom of the recovery shell; The heat exchange tank is arranged in the recovery shell, and one end of the water supply pipe is located in the heat exchange tank; The first air guide plate is spiral-shaped, and the other ends of the plurality of heat-conducting rods are fixed on the piston cylinder; The drying assembly includes an air outlet cylinder, three air outlet slots, a rotating rod, a synchronous gear, three fixed frames, three drying blocks, a plurality of synchronous tooth slots, a second air guide plate, a driving mechanism and a driving gear, wherein: The gas outlet is installed on one end of the recovery shell, and the gas outlet is connected with the recovery shell; Three air outlet slots are equidistantly arranged on the air outlet tube, and the air outlet slots are rectangular; The rotating rod is rotatably arranged on one end of the punching bag; The three fixing frames are rotatably arranged on one end of the punching bag, and the three fixing frames do not contact each other; The synchronous gear is installed on one end of the punching bag, and the synchronous gear and the punching bag are located on the same circle center; The three drying blocks are installed in corresponding fixed frames; A plurality of synchronous tooth grooves are provided on the corresponding fixed frame, and the synchronous gear is meshed with the synchronous tooth grooves on the corresponding fixed frame; The second air guide plate is mounted on the synchronous gear; The driving mechanism is mounted on one end of the recovery shell; The driving gear is mounted on the rotating shaft of the driving mechanism, and the driving gear is meshed with the synchronous tooth groove.

2. The air compressor waste heat recovery device according to claim 1, characterized in that: The length of the air outlet groove is less than the length of the air outlet cylinder covered by a single drying block, and the three air outlet grooves are located on one side of the corresponding drying block.

3. The air compressor waste heat recovery device according to claim 1, characterized in that: One end of the air inlet pipe of the air compressor contacts the surface of the drying block, and the diameter of the air inlet pipe is less than or equal to one half of the diameter of the drying block.

4. The air compressor waste heat recovery device according to claim 1, characterized in that: The second air guide plate is circular, and the second air guide plate and the corresponding drying block are not in contact with each other. The second air guide plate is located in the middle of the three drying blocks.

5. The air compressor waste heat recovery device according to claim 1, characterized in that: A plurality of heat exchange holes are evenly arranged on the top of the diverging box.

6. The air compressor waste heat recovery device according to claim 1, characterized in that: The air outlet slot is rotatably connected to a limited wind plate.

7. The air compressor waste heat recovery device according to claim 1, characterized in that: A humidity sensor is installed inside the drying block.

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