Waste heat recovery device of air compressor

Abstract

The utility model discloses a waste heat recovery device of an air compressor, which relates to the technical field of waste heat recovery of air compressors and comprises a shell and a heat exchange unit, the heat exchange unit and a filter unit are arranged in the shell, a feed pipe, a discharge pipe, a water inlet pipe and a water outlet pipe are respectively arranged on two sides of the shell, the heat exchange unit and the feed pipe are connected with the filter unit, and the filter unit is connected with the discharge pipe. The discharging pipe, the water inlet pipe and the water outlet pipe are connected with the heat exchange unit. The heat exchange device has the beneficial effects that the motor, the driving gear and the driven gear drive the rotating shaft to rotate, the rotating shaft drives the fixing rod and the heat exchange pipe to rotate, cold water in the heat exchange box is stirred through the fixing rod and the heat exchange pipe, the cold water and hot water obtained after heat exchange flow, and therefore heat exchange can be better conducted; and meanwhile, the heat exchange pipes are scoured through flowing water flow, scale accumulation on the heat exchange pipes is avoided, the contact area between the heat exchange pipes and cold water is guaranteed, and the heat exchange efficiency is guaranteed.

Description

Technical Field

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

[0002] Air compressor generally refers to air compressor, which is a device used to compress gas. Air compressor is similar to water pump in structure. Air compressor is roughly divided into reciprocating piston type, rotary blade or rotary screw and centrifugal type. During the use of air compressor, the air compressor body will produce a large amount of high-temperature and high-pressure oil and gas mixture, and a large amount of oil and gas mixture will be directly released into the air, which will pollute the atmosphere, is not conducive to environmental protection, and will waste a lot of heat energy. Therefore, air compressor waste heat recovery device came into being to recycle the waste heat generated by the air compressor.

[0003] After searching, the Chinese patent publication number CN216869252U discloses an air compressor waste heat recovery device, which mainly exchanges heat simultaneously through an external heat exchange tube and an internal heat exchange tube, thereby improving the heat exchange efficiency.

[0004] By comparing the existing technologies in related fields, it can be seen that when the high-temperature and high-pressure oil-gas mixture generated by the air compressor is heat exchanged by cold water, the existing heat exchange tubes are mostly directly fixed in the heat exchange device. After the cold water is heated, scale will precipitate. The scale accumulates on the heat exchange tubes and is not easy to clean, which affects the heat exchange efficiency of the heat exchange tubes. Utility Model Content

[0005] The purpose of the utility model is to provide an air compressor waste heat recovery device in order to solve the above-mentioned problem.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] An air compressor waste heat recovery device comprises a shell and a heat exchange unit:

[0008] The heat exchange unit and the filter unit are arranged in the shell, and a feed pipe, a discharge pipe, a water inlet pipe and a water outlet pipe are arranged on both sides of the shell respectively. The heat exchange unit and the feed pipe are connected to the filter unit, and the discharge pipe, the water inlet pipe and the water outlet pipe are connected to the heat exchange unit. The feed pipe is connected to the air compressor, the discharge pipe is connected to the external oil and gas recovery device, the water inlet pipe is connected to the external water supply device, and the water outlet pipe is connected to the external hot water storage tank. The high-temperature and high-pressure oil and gas mixture generated by the air compressor is transported into the filter unit through the feed pipe, and the oil and gas mixture is filtered by the filter unit and then transported into the heat exchange unit. The external water supply device transports water into the heat exchange unit through the water inlet pipe. After the oil and gas mixture and cold water are heat exchanged in the heat exchange unit, the oil and gas mixture is led out to the external oil and gas recovery device through the discharge pipe, and the hot water after heat exchange is led out to the external hot water storage tank through the water outlet pipe, so as to be used by the staff;

[0009] The heat exchange unit comprises a heat exchange box and a rotating shaft, wherein a heat preservation chamber is arranged inside the heat exchange box, and the water outlet pipe, the material feeding assembly and the driving assembly are arranged on the side of the heat exchange box, the heat preservation chamber connects the filter unit and the material feeding assembly, the rotating shaft rotatably connects the heat exchange box and the material feeding assembly, the rotating shaft is connected to the driving assembly, a heat exchange pipe and a fixed rod are arranged on the part of the rotating shaft located in the heat exchange box, a spray hole is arranged on the fixed rod, the material feeding assembly connects the material outlet pipe, the water inlet pipe, the heat exchange pipe and the spray hole, the water inlet pipe transports cold water into the spray hole through the material feeding assembly, and sprays it out through the spray hole, so that the cold water entering the heat exchange box is evenly dispersed through the spray hole, so that heat exchange can be better performed, and at the same time, the water sprayed through the spray hole flushes the heat exchange pipe to prevent scale from accumulating on the heat exchange pipe, and the filter unit passes through The filtered oil-gas mixture is transported into the heat exchange tube through the material conveying component, and the heat exchange tube allows the oil-gas mixture to exchange heat with the cold water in the heat exchange box. At the same time, the driving component drives the fixed rod and the heat exchange tube to rotate through the rotating shaft, and the heat exchange tube is supported by the fixed rod, which effectively improves the stability of the heat exchange tube. The fixed rod and the heat exchange tube rotate, so as to stir the cold water in the heat exchange box and make the cold water flow, so as to better exchange heat. When the heat exchange tube rotates, the heat exchange tube is flushed by the flowing water flow to avoid scale accumulation on the heat exchange tube, ensure the contact area between the heat exchange tube and the cold water, and ensure the heat exchange efficiency. At the same time, the inner wall of the heat exchange box is scraped by the fixed rod to avoid scale accumulation in the heat exchange box. The oil-gas mixture after heat exchange is discharged into the discharge pipe through the material conveying component, and the hot water after heat exchange in the heat exchange box is discharged into the water outlet pipe through the material conveying component.

[0010] Further, the material delivery assembly includes a material guide valve, a mounting valve, a water guide groove, and a material guide groove. The material guide valve and the mounting valve are respectively arranged on both sides of the heat exchange box. The material guide valve and the mounting valve are both rotatably connected to the rotating shaft. The water guide groove is arranged in the rotating shaft and the mounting valve. The mounting valve is connected to the discharge pipe and the water inlet pipe. The water guide groove is connected to the spray hole and the water inlet pipe. The material guide groove is arranged in the rotating shaft, the material guide valve, and the mounting valve. The material guide valve and The material guide trough is connected to the insulation chamber, and the heat exchange tube and the discharge tube are connected to the material guide trough. When the rotating shaft drives the heat exchange tube and the fixed rod to rotate, the high-temperature and high-pressure oil and gas mixture in the insulation chamber enters the heat exchange tube through the material guide valve and the material guide trough, and the water inlet pipe transports cold water into the water guide trough through the installation valve, and then enters the heat exchange box through the spray hole. The high-temperature and high-pressure oil and gas mixture exchanges heat with the cold water in the heat exchange box through the heat exchange tube, and the oil and gas mixture after heat exchange enters the discharge tube through the material guide trough and the installation valve and is discharged.

[0011] Furthermore, the driving assembly includes a driven gear and a motor, the driven gear is arranged on the rotating shaft, the motor is arranged on the side of the heat exchange box, a driving gear is installed on the output shaft of the motor, the driving gear is meshed and connected to the driven gear, the input end of the motor is electrically connected to the output end of an external controller, the external controller controls the operation of the motor, and the motor drives the rotating shaft to rotate through the driving gear and the driven gear.

[0012] Furthermore, the filter unit includes a filter box, which is arranged in the shell, and the two ends of the filter box are respectively connected to the feed pipe and the insulation chamber, and the side of the filter box is provided with an installation groove, and a filter screen is slidably installed in the installation groove. The high-temperature and high-pressure oil and gas mixture entering the filter box is filtered by the filter screen, and the filtered high-temperature and high-pressure oil and gas mixture enters the insulation chamber, thereby preventing impurities in the high-temperature and high-pressure oil and gas mixture from clogging the heat exchange tube.

[0013] Furthermore, it also includes spiral blades, which are arranged in the insulation chamber. The interior of the insulation chamber is supported by the spiral blades to improve the strength of the heat exchange box, and the high-temperature and high-pressure oil and gas mixture entering the insulation chamber is guided by the spiral blades to extend the residence time of the high-temperature and high-pressure oil and gas mixture in the insulation chamber, so that the heat exchange box can be better insulated, and the contact area between the high-temperature and high-pressure oil and gas mixture and the heat exchange box is increased by the spiral blades, and the high-temperature and high-pressure oil and gas mixture is heat exchanged by the spiral blades.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The motor, driving gear and driven gear drive the shaft to rotate, and the shaft drives the fixed rod and the heat exchange tube to rotate. The cold water in the heat exchange box is stirred by the fixed rod and the heat exchange tube, so that the cold water and the hot water after heat exchange flow, so as to better exchange heat and effectively improve the efficiency of heat exchange. At the same time, the heat exchange tube is flushed by the flowing water to avoid the accumulation of scale on the heat exchange tube, ensure the contact area between the heat exchange tube and the cold water, and ensure the efficiency of heat exchange.

[0016] 2. Cold water enters the spray hole through the water inlet pipe, the installation valve, and the water guide groove, and is sprayed out through the spray hole. The cold water entering the heat exchange box is evenly dispersed through the spray hole, so that heat exchange can be better performed. At the same time, the water sprayed through the spray hole flushes the heat exchange tube to prevent scale from accumulating on the heat exchange tube. At the same time, the inner wall of the heat exchange box is scraped by the fixed rod to prevent scale from accumulating in the heat exchange box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of an air compressor waste heat recovery device described in the utility model;

[0019] Figure 2 It is a schematic diagram of the side view of the shell section of an air compressor waste heat recovery device described in the utility model;

[0020] Figure 3 It is a schematic diagram of the cross-section of a shell of an air compressor waste heat recovery device described in the utility model, viewed from above;

[0021] Figure 4 The utility model is an air compressor waste heat recovery device Figure 3 The enlarged structural diagram at A in the middle;

[0022] Figure 5 It is a schematic diagram of the cross-sectional side view of the shell and heat exchange box of an air compressor waste heat recovery device described in the utility model;

[0023] Figure 6 It is a schematic diagram of the cross-section of the shell and heat exchange box of an air compressor waste heat recovery device described in the utility model;

[0024] Figure 7 The utility model is an air compressor waste heat recovery device Figure 6The enlarged structural diagram at B in the middle;

[0025] Figure 8 It is a schematic diagram of the cross-sectional structure of the connection between the rotating shaft and the mounting valve of an air compressor waste heat recovery device described in the utility model.

[0026] The following are the descriptions of the reference numerals:

[0027] 1. Shell; 2. Heat exchange unit; 21. Heat exchange box; 22. Insulation chamber; 23. Rotating shaft; 24. Feed valve; 25. Mounting valve; 26. Heat exchange tube; 27. Fixing rod; 28. Spray hole; 29. ​​Water guide trough; 210. Feed guide trough; 211. Driven gear; 212. Driving gear; 213. Motor; 3. Filter unit; 31. Filter box; 32. Filter net; 4. Feed pipe; 5. Discharge pipe; 6. Water inlet pipe; 7. Water outlet pipe; 8. Spiral blade. DETAILED DESCRIPTION

[0028] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0030] The utility model is further described below in conjunction with the accompanying drawings:

[0031] Example

[0032] like Figure 1-Figure 8As shown, an air compressor waste heat recovery device includes a shell 1 and a heat exchange unit 2:

[0033] The shell 1 is provided with a heat exchange unit 2 and a filter unit 3. A feed pipe 4, a discharge pipe 5, a water inlet pipe 6, and a water outlet pipe 7 are respectively provided on both sides of the shell 1. The heat exchange unit 2 and the feed pipe 4 are connected to the filter unit 3. The discharge pipe 5, the water inlet pipe 6, and the water outlet pipe 7 are connected to the heat exchange unit 2. Figure 1 , Figure 2 , Figure 6 As shown, the feed pipe 4 is connected to the air compressor, the discharge pipe 5 is connected to the external oil and gas recovery device, the water inlet pipe 6 is connected to the external water supply device, and the water outlet pipe 7 is connected to the external hot water storage tank. The high-temperature and high-pressure oil and gas mixture generated by the operation of the air compressor is transported into the filter unit 3 through the feed pipe 4, and the oil and gas mixture is filtered by the filter unit 3 and then transported into the heat exchange unit 2. The external water supply device transports water into the heat exchange unit 2 through the water inlet pipe 6. After the oil and gas mixture and cold water exchange heat in the heat exchange unit 2, the oil and gas mixture is led out to the external oil and gas recovery device through the discharge pipe 5, and the hot water after heat exchange is led out to the external hot water storage tank through the water outlet pipe 7, so as to be used by the staff;

[0034] The heat exchange unit 2 includes a heat exchange box 21 and a rotating shaft 23. The heat exchange box 21 is provided with a heat preservation chamber 22. The side of the heat exchange box 21 is provided with a water outlet pipe 7, a feeding assembly and a driving assembly. The heat preservation chamber 22 connects the filter unit 3 and the feeding assembly. The rotating shaft 23 rotatably connects the heat exchange box 21 and the feeding assembly. The rotating shaft 23 is connected to the driving assembly. The portion of the rotating shaft 23 located in the heat exchange box 21 is provided with a heat exchange pipe 26 and a fixed rod 27. The fixed rod 27 is provided with a spray hole 28. The feeding assembly is connected to the discharge pipe 5, the water inlet pipe 6, the heat exchange pipe 26 and the spray hole 28. Figure 1 , Figure 2 , Figure 6-Figure 8As shown, the water inlet pipe 6 conveys cold water into the spray hole 28 through the material delivery component, and sprays it out through the spray hole 28. The cold water entering the heat exchange box 21 is evenly dispersed through the spray hole 28, so that heat exchange can be better performed. At the same time, the water sprayed through the spray hole 28 flushes the heat exchange tube 26 to prevent scale from accumulating on the heat exchange tube 26. The oil-gas mixture filtered by the filter unit 3 is conveyed into the heat exchange tube 26 through the material delivery component, and the oil-gas mixture and the cold water in the heat exchange box 21 are heat exchanged through the heat exchange tube 26. At the same time, the driving component drives the rotating shaft 23 to rotate, and the rotating shaft 23 drives the fixed rod 27 and the heat exchange tube 26 to rotate. The fixed rod 27 supports the heat exchange tube 26, which effectively improves The stability of the heat exchange tube 26 is ensured by rotating the fixed rod 27 and the heat exchange tube 26, thereby stirring the cold water in the heat exchange box 21, allowing the cold water and the hot water after heat exchange to flow, thereby enabling better heat exchange and effectively improving the efficiency of heat exchange. When the heat exchange tube 26 rotates, the heat exchange tube 26 is flushed by the flowing water flow to avoid the accumulation of scale on the heat exchange tube 26, thereby ensuring the contact area between the heat exchange tube 26 and the cold water and the efficiency of heat exchange. At the same time, the inner wall of the heat exchange box 21 is scraped by the fixed rod 27 to avoid the accumulation of scale in the heat exchange box 21. The oil and gas mixture after heat exchange is discharged into the discharge pipe 5 through the feeding assembly, and the hot water after heat exchange in the heat exchange box 21 is discharged into the water outlet pipe 7 through the feeding assembly.

[0035] The material conveying assembly includes a material guide valve 24, an installation valve 25, a water guide groove 29, and a material guide groove 210. The material guide valve 24 and the installation valve 25 are respectively arranged on both sides of the heat exchange box 21. The material guide valve 24 and the installation valve 25 are both rotatably connected to the rotating shaft 23. The water guide groove 29 is arranged in the rotating shaft 23 and the installation valve 25. The installation valve 25 is connected to the discharge pipe 5 and the water inlet pipe 6. The water guide groove 29 is connected to the spray hole 28 and the water inlet pipe 6. The material guide groove 210 is arranged in the rotating shaft 23, the material guide valve 24, and the installation valve 25. The material guide valve 24 and the material guide groove 210 are connected to the heat preservation chamber 22, and the heat exchange pipe 26 and the discharge pipe 5 are connected to the material guide groove 210. Figure 2 , Figure 3 , Figure 6 , Figure 8 As shown, when the rotating shaft 23 drives the heat exchange tube 26 and the fixed rod 27 to rotate, the high-temperature and high-pressure oil-gas mixture in the heat preservation chamber 22 enters the heat exchange tube 26 through the guide valve 24 and the guide groove 210, and the water inlet pipe 6 transports cold water into the water guide groove 29 through the installation valve 25, and then enters the heat exchange box 21 through the spray hole 28. The high-temperature and high-pressure oil-gas mixture exchanges heat with the cold water in the heat exchange box 21 through the heat exchange tube 26, and the oil-gas mixture after heat exchange enters the discharge pipe 5 through the guide groove 210 and the installation valve 25 to be discharged.

[0036] The driving assembly includes a driven gear 211 and a motor 213. The driven gear 211 is arranged on the rotating shaft 23. The motor 213 is arranged on the side of the heat exchange box 21. A driving gear 212 is installed on the output shaft of the motor 213. The driving gear 212 is meshed and connected to the driven gear 211. The input end of the motor 213 is electrically connected to the output end of the external controller. The external controller controls the motor 213 to work. Figure 3 , Figure 4 , Figure 8 As shown, the motor 213 drives the driving gear 212 to rotate, the driving gear 212 drives the driven gear 211 to rotate, and the driven gear 211 drives the rotating shaft 23 to rotate, thereby driving the fixing rod 27 and the heat exchange tube 26 to rotate.

[0037] The filter unit 3 includes a filter box 31, which is arranged in the housing 1. The two ends of the filter box 31 are connected to the feed pipe 4 and the heat preservation chamber 22 respectively. The side of the filter box 31 is provided with a mounting groove, and a filter screen 32 is slidably installed in the mounting groove. Figure 2 , Figure 5 , Figure 6 , install the filter screen 32 into the installation groove on the side of the filter box 31, and the feed pipe 4 transports the high-temperature and high-pressure oil-gas mixture into the filter box 31. The high-temperature and high-pressure oil-gas mixture entering the filter box 31 is filtered by the filter screen 32, and the filtered high-temperature and high-pressure oil-gas mixture enters the insulation chamber 22, thereby preventing impurities in the high-temperature and high-pressure oil-gas mixture from clogging the heat exchange tube 26.

[0038] The invention also includes a spiral blade 8, which is arranged in the heat preservation chamber 22. Figure 5 , Figure 6 As shown, the interior of the insulation chamber 22 is supported by the spiral blades 8 to improve the strength of the heat exchange box 21, and the high-temperature and high-pressure oil-gas mixture entering the insulation chamber 22 is guided by the spiral blades 8. The space inside the insulation chamber 22 is divided by the spiral blades 8 to extend the residence time of the high-temperature and high-pressure oil-gas mixture in the insulation chamber 22, so that the heat exchange box 21 can be better insulated, and the contact area between the high-temperature and high-pressure oil-gas mixture and the heat exchange box 21 is increased by the spiral blades 8, and the high-temperature and high-pressure oil-gas mixture is exchanged with heat by the spiral blades 8.

[0039] Working principle: Figure 1 , Figure 2 , Figure 5 , Figure 6 As shown, the high-temperature and high-pressure oil-gas mixture generated by the air compressor is transported into the filter box 31 through the feed pipe 4, and the high-temperature and high-pressure oil-gas mixture entering the filter box 31 is filtered by the filter screen 32, and the filtered high-temperature and high-pressure oil-gas mixture enters the insulation chamber 22; Figure 5 , Figure 6As shown, the high-temperature and high-pressure oil-gas mixture entering the heat preservation chamber 22 is guided by the spiral blade 8, and the residence time of the high-temperature and high-pressure oil-gas mixture in the heat preservation chamber 22 is prolonged, so that the heat exchange box 21 can be better insulated, and the contact area between the high-temperature and high-pressure oil-gas mixture and the heat exchange box 21 is increased by the spiral blade 8, and the high-temperature and high-pressure oil-gas mixture is heat exchanged by the spiral blade 8;

[0040] like Figure 2 , Figure 3 , Figure 6 , Figure 8 As shown, the high-temperature and high-pressure oil-gas mixture in the heat-insulating chamber 22 enters the heat exchange tube 26 through the guide valve 24 and the guide groove 210; the external water supply device conveys water into the water guide groove 29 through the water inlet pipe 6 and the installation valve 25, and then conveys water into the spray hole 28 through the water guide groove 29, and sprays out through the spray hole 28. The cold water entering the heat exchange box 21 is evenly dispersed through the spray hole 28, so that heat exchange can be better performed. At the same time, the water sprayed through the spray hole 28 flushes the heat exchange tube 26 to prevent scale from accumulating on the heat exchange tube 26;

[0041] like Figure 1 , Figure 2 , Figure 6-Figure 8 As shown, the oil-gas mixture and the cold water in the heat exchange box 21 are heat exchanged through the heat exchange pipe 26. Figure 3 , Figure 4 , Figure 8 As shown, the motor 213 drives the driving gear 212 to rotate, the driving gear 212 drives the driven gear 211 to rotate, and the driven gear 211 drives the rotating shaft 23 to rotate, thereby driving the fixed rod 27 and the heat exchange tube 26 to rotate, and the fixed rod 27 supports the heat exchange tube 26, which effectively improves the stability of the heat exchange tube 26, and the fixed rod 27 and the heat exchange tube 26 rotate, so that the cold water in the heat exchange box 21 is stirred, so that the cold water and the hot water after heat exchange flow, so that the heat exchange can be better performed, and the heat exchange efficiency is effectively improved;

[0042] At the same time, if Figure 1 , Figure 2 , Figure 6-Figure 8 As shown, when the heat exchange tube 26 rotates, the heat exchange tube 26 is flushed by the flowing water to avoid the accumulation of scale on the heat exchange tube 26, thereby ensuring the contact area between the heat exchange tube 26 and the cold water and the heat exchange efficiency. At the same time, the inner wall of the heat exchange box 21 is scraped by the fixing rod 27 to avoid the accumulation of scale in the heat exchange box 21. The oil and gas mixture after heat exchange is discharged into the discharge pipe 5 through the feeding assembly, and then discharged into the external oil and gas recovery device through the discharge pipe 5. The hot water after heat exchange in the heat exchange box 21 is discharged into the water outlet pipe 7 through the feeding assembly, and then discharged into the external hot water storage tank through the water outlet pipe 7, so as to be used by the staff.

[0043] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An air compressor waste heat recovery device, characterized in that: It comprises a shell (1) and a heat exchange unit (2): The heat exchange unit (2) and the filter unit (3) are arranged in the shell (1); a feed pipe (4), a discharge pipe (5), a water inlet pipe (6), and a water outlet pipe (7) are respectively arranged on both sides of the shell (1); the heat exchange unit (2) and the feed pipe (4) are connected to the filter unit (3); the discharge pipe (5), the water inlet pipe (6), and the water outlet pipe (7) are connected to the heat exchange unit (2); The heat exchange unit (2) comprises a heat exchange box (21) and a rotating shaft (23). A heat preservation chamber (22) is arranged inside the heat exchange box (21). The side of the heat exchange box (21) is provided with the water outlet pipe (7), a material conveying assembly and a driving assembly. The heat preservation chamber (22) is connected to the filter unit (3) and the material conveying assembly. The rotating shaft (23) rotatably connects the heat exchange box (21) and the material conveying assembly. The rotating shaft (23) is connected to the driving assembly. A heat exchange pipe (26) and a fixing rod (27) are arranged on the part of the rotating shaft (23) located inside the heat exchange box (21). A spray hole (28) is arranged on the fixing rod (27). The material conveying assembly is connected to the material outlet pipe (5), the water inlet pipe (6), the heat exchange pipe (26) and the spray hole (28).

2. The air compressor waste heat recovery device according to claim 1, characterized in that: The material conveying assembly comprises a material guide valve (24), a mounting valve (25), a water guide groove (29), and a material guide groove (210); the material guide valve (24) and the mounting valve (25) are respectively arranged on both sides of the heat exchange box (21); the material guide valve (24) and the mounting valve (25) are both rotatably connected to the rotating shaft (23); the water guide groove (29) is arranged in the rotating shaft (23) and the mounting valve (25); the mounting valve (25) is connected to the rotating shaft (23) and the mounting valve (25); The discharge pipe (5) and the water inlet pipe (6) are connected, the water guide groove (29) is connected to the spray hole (28) and the water inlet pipe (6), the guide groove (210) is arranged in the rotating shaft (23), the guide valve (24) and the installation valve (25), the guide valve (24) and the guide groove (210) are connected to the heat preservation chamber (22), and the heat exchange pipe (26) and the discharge pipe (5) are connected to the guide groove (210).

3. The air compressor waste heat recovery device according to claim 1, characterized in that: The driving assembly comprises a driven gear (211) and a motor (213); the driven gear (211) is arranged on the rotating shaft (23); the motor (213) is arranged on the side of the heat exchange box (21); a driving gear (212) is installed on the output shaft of the motor (213); and the driving gear (212) is meshedly connected with the driven gear (211).

4. The air compressor waste heat recovery device according to claim 1, characterized in that: The filter unit (3) comprises a filter box (31), the filter box (31) is arranged in the housing (1), the two ends of the filter box (31) are respectively connected to the feed pipe (4) and the heat preservation chamber (22), and a mounting groove is arranged on the side of the filter box (31), and a filter screen (32) is slidably mounted in the mounting groove.

5. The air compressor waste heat recovery device according to claim 1, characterized in that: It also includes a spiral blade (8), and the spiral blade (8) is arranged in the heat preservation chamber (22).

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