A waste heat recovery device for an air compressor

Abstract

The utility model discloses a kind of waste heat recovery devices for air compressor, it is related to waste heat recovery technical field, and it includes: base, the outer surface rear end top of base is equipped with mounting frame, the inside left and right sides of mounting frame are fixedly installed with locating block, the inside of locating block is inserted with recovery tank, the shaft surface inside rear end of recovery tank is equipped with fixed plate, the outer surface front end of fixed plate is provided with first gear, the innovative combination of rotating heat pipe and gear transmission system is formed, dynamic heat exchange structure is formed, the contact area of cooling liquid and recovery tank fluid is expanded, compared with traditional fixed structure efficiency, modular mounting frame and locating block design realize quick disassembly and assembly, maintenance time is greatly improved, the combination of ground wheel and positioning plate makes device flexible movement and firmly lock, adapt to multi-unit group shared recovery scene, in addition, filter screen and baffle optimize fluid path, so that equipment continuous trouble-free operating time is extended.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, specifically to a waste heat recovery device for an air compressor. Background Technology

[0002] An air compressor is a device that compresses gas. The structure of an air compressor is similar to that of a water pump. One common type is the twin-screw compressor, which uses two rotors with helical gears to mesh with each other, reducing the volume at the meshing point of the two rotors, thereby compressing and collecting the gas. During the compression process, the air compressor generates a large amount of heat due to the compression of air pressure and the friction between the machinery. This heat often accounts for 70% of the working power. Therefore, an air compressor wastewater heat recovery device is used to recover and reuse the heat emitted by the equipment.

[0003] Traditional devices often use fixed heat exchange tubes, which have a limited contact area between the coolant and the recovered medium, and are prone to forming dead zones due to uneven flow velocity, resulting in a low heat transfer coefficient. Utility Model Content

[0004] To solve the above-mentioned technical problems, a waste heat recovery device for air compressors is provided. This technical solution solves the problem of low heat exchange efficiency mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A waste heat recovery device for an air compressor includes: a base, an installation frame mounted on the top of the rear end of the outer surface of the base, positioning blocks fixedly mounted on the left and right sides inside the installation frame, a recovery tank inserted into the positioning blocks, a fixing plate mounted on the rear end of the inner shaft surface of the recovery tank, a first gear provided on the front end of the outer surface of the fixing plate, and the fixing plate and the first gear connected by a rotating rod, two sets of installation shafts fixedly mounted on the front end of the outer surface of the first gear, a heat exchange tube fixedly mounted on the front end of the shaft surface of the installation shaft, a second annular tube mounted on the rear end of the shaft surface of the heat exchange tube, a discharge pipe mounted on the outer end of the second annular tube near the installation shaft, a valve mounted on the front end of the shaft surface of the discharge pipe, a third connecting pipe fixedly mounted on one side of the outer surface of the valve, and a water pump mounted through the outer surface of the third connecting pipe, with the air compressor body mounted on the top end of the shaft surface of the water pump.

[0007] Preferably, the axial surface of the heat exchange tube is provided with a plurality of second connecting tubes, and the rear end of the axial surface of the second connecting tube is connected to the heat exchange tube, the front end of the axial surface of the second connecting tube is installed with a first annular tube, and the front end of the outer surface of the first annular tube is inserted with a feed tube.

[0008] Preferably, an mounting plate is installed on the top and bottom of the outer surface of the mounting frame, a motor is installed on the rear side of the outer surface of the mounting plate, a second rotating shaft is fixedly installed on the output end of the motor, a second rotating wheel is inserted into the shaft surface of the second rotating shaft, a belt is sleeved on the outer surface of the second rotating wheel, and a first rotating wheel is sleeved on one end of the outer surface of the belt.

[0009] Preferably, a first rotating shaft is inserted into the middle of the outer surface of the first rotating wheel, a second gear is inserted into the front end of the shaft surface of the first rotating shaft, and the first gear is meshed with the bottom end of the outer surface of the second gear.

[0010] Preferably, a first connecting pipe is installed at the front end of the shaft surface of the recycling tank, a filter screen is installed at the front end of the inner side of the recycling tank, a partition is installed on the inner side of the shaft surface of the recycling tank at the rear end of the filter screen, and a feed shaft is fixedly installed at the front end of the shaft surface of the partition.

[0011] Preferably, a load-bearing frame is inserted into the front side of the top of the outer surface of the base, and the top of the outer surface of the load-bearing frame abuts against the air compressor body. A first connecting pipe is installed at the rear end of the shaft surface of the air compressor body, and several sets of ground wheels are installed at the bottom of the outer surface of the base.

[0012] Preferably, the base has mounting grooves at both the front and rear ends, a connecting shaft is inserted into the inner side of the mounting groove, a positioning plate is inserted into the shaft surface of the connecting shaft, and a protrusion is provided on the outer surface of the positioning plate near the bottom.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This solution proposes a waste heat recovery device for air compressors. Through the innovative combination of rotating heat exchange tubes and a gear transmission system, a dynamic heat exchange structure is formed, which increases the contact area between the coolant and the fluid in the recovery tank, improving efficiency compared to traditional fixed structures. The modular installation frame and positioning block design enables quick assembly and disassembly, greatly improving maintenance time and significantly reducing maintenance costs. The combination of ground wheels and positioning plates allows the device to move flexibly and lock securely, adapting to multi-unit shared recovery scenarios. In addition, the filter screen and baffles optimize the fluid path, extending the continuous trouble-free operation time of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the positioning plate in this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the recycling tank in this utility model;

[0018] Figure 4This is a schematic diagram of the rotating component in this utility model.

[0019] The numbers on the map are:

[0020] 1. Base; 2. Support frame; 3. Air compressor body; 4. Ground wheel; 5. Mounting frame; 6. Connecting shaft; 7. Positioning plate; 8. Protrusion; 9. Mounting groove; 10. Positioning block; 11. First connecting pipe; 12. Filter screen; 13. Feed shaft; 14. Partition plate; 15. Feed pipe; 16. First annular pipe; 17. Second connecting pipe; 18. Heat exchange pipe; 19. Second annular pipe; 20. Mounting shaft; 21. Discharge pipe; 22. Valve; 23. First rotating shaft; 24. Third connecting pipe; 25. First gear; 26. Second gear; 27. Fixing plate; 28. First rotating wheel; 29. ​​Belt; 30. Water pump; 31. Second rotating wheel; 32. Second rotating shaft; 33. Motor; 34. Mounting plate; 35. Recovery tank. Detailed Implementation

[0021] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0022] Reference Figure 1-4As shown, a waste heat recovery device for an air compressor includes: a base 1, a mounting frame 5 installed on the top rear end of the outer surface of the base 1, positioning blocks 10 fixedly installed on the left and right sides inside the mounting frame 5, a recovery tank 35 inserted into the positioning blocks 10, a fixing plate 27 installed on the rear end of the inner shaft surface of the recovery tank 35, a first gear 25 provided on the front end of the outer surface of the fixing plate 27, and the fixing plate 27 and the first gear 25 are connected by a rotating rod, and two sets of mounting shafts 20 are fixedly installed on the front end of the outer surface of the first gear 25. A heat exchange tube 18 is fixedly installed at the front end of the shaft surface of the 20. A second annular tube 19 is installed at the rear end of the shaft surface of the heat exchange tube 18. A discharge pipe 21 is installed at the end of the outer surface of the second annular tube 19 near the end of the shaft 20. A valve 22 is installed at the front end of the shaft surface of the discharge pipe 21. A third connecting pipe 24 is fixedly installed on one side of the outer surface of the valve 22. A water pump 30 is installed through the shaft surface of the third connecting pipe 24 and through the outer surface of the recovery tank 35. An air compressor body 3 is installed at the top end of the shaft surface of the water pump 30. Several sets of... A second connecting pipe 17 is connected to a heat exchange pipe 18 at its rear end. A first annular pipe 16 is installed at the front end of the shaft surface of the second connecting pipe 17. A feed pipe 15 is inserted into the front end of the outer surface of the first annular pipe 16. A mounting plate 34 is installed at the top and bottom of the outer surface of the mounting frame 5. A motor 33 is installed on the rear side of the outer surface of the mounting plate 34. A second rotating shaft 32 is fixedly installed at the output end of the motor 33. A second rotating wheel 31 is inserted into the shaft surface of the second rotating shaft 32. A belt 29 is sleeved on the outer surface of the second rotating wheel 31. A first pulley 28 is sleeved on one end of the outer surface of the belt 29. A first shaft 23 is inserted into the middle of the outer surface of the first pulley 28. A second gear 26 is inserted into the front end of the shaft surface of the first shaft 23. A first gear 25 is meshed on the bottom end of the outer surface of the second gear 26. A first connecting pipe 11 is installed on the front end of the shaft surface of the recycling tank 35. A filter screen 12 is installed on the front end of the inner side of the recycling tank 35. A partition 14 is installed on the inner side of the shaft surface of the recycling tank 35 at the rear end of the filter screen 12. A feed shaft 13 is fixedly installed on the front end of the shaft surface of the partition 14.

[0023] With the above scheme, the base 1 serves as the overall load-bearing foundation, and the top of its rear end is fixedly mounted with a frame 5, forming a modular integrated structure, which facilitates the installation and maintenance of the recycling tank 35 and the transmission system. The recycling tank 35 is inserted into the mounting frame 5 through the left and right positioning blocks 10. The internal rear end fixing plate 27 supports the first gear 25, and the rotation of the gear is driven by the rotating rod, providing a power foundation for the dynamic heat exchange of the heat exchange tube 18. The heat exchange system is centered on the rotatable heat exchange tube 18, which is fixed to the front end of the first gear 25 through the mounting shaft 20. The second connecting pipe 17 on the shaft surface is connected to the feed pipe 15 through the first annular pipe 16, forming a coolant inlet path. The rear end second annular pipe 19 is connected to the water pump 30 through the discharge pipe 21, valve 22 and third connecting pipe 24, forming a complete fluid circulation loop. The specific energy transfer process is as follows: the water pump 30 draws low-temperature coolant from the recovery tank 35, pressurizes it and injects it into the air compressor body 3 to absorb the waste heat of compression. The heated coolant flows back to the recovery tank through the first connecting pipe 11. It fully contacts the fluid in the tank through the rotating heat exchange tube 18, releases heat and completes the waste heat recovery. In the transmission drive system, the motor 33 is fixed to the top of the mounting frame 5 through the mounting plate 34. Its output shaft drives the first rotating wheel 28 to rotate through the second rotating shaft 32, the second rotating wheel 31 and the belt 29. Then, the first rotating shaft 23 drives the second gear 26 to mesh with the first gear 25, so that the heat exchange tube 18 rotates at a constant speed around the mounting shaft 20. This rotating heat exchange design not only expands the contact area between the coolant and the fluid in the recovery tank, increasing the heat exchange efficiency by more than 30%, but also avoids the scaling problem of traditional fixed heat exchange tubes through dynamic flushing. In addition, the filter screen 12 at the front end of the recovery tank 35 can effectively filter impurities in the coolant and prevent clogging of the heat exchange tubes. The internal baffle 14 cooperates with the feed shaft 13 to guide the fluid to be evenly distributed around the heat exchange tubes, further optimizing the heat exchange path and ensuring the high efficiency and stability of the waste heat recovery process.

[0024] Furthermore, refer to Figure 1-4 As shown, a load-bearing frame 2 is inserted into the front side of the top of the outer surface of the base 1, and the top of the outer surface of the load-bearing frame 2 abuts against the air compressor body 3. A first connecting pipe 11 is installed at the rear end of the shaft surface of the air compressor body 3. Several sets of ground wheels 4 are installed at the bottom of the outer surface of the base 1. The front and rear ends of the outer surface of the base 1 are provided with mounting grooves 9. A connecting shaft 6 is inserted into the inner side of the mounting groove 9. A positioning plate 7 is inserted into the shaft surface of the connecting shaft 6. A protrusion 8 is provided on the outer surface of the positioning plate 7 near the bottom.

[0025] With the above solution, the load-bearing frame 2 is inserted into the front end of the base 1, and the top end abuts against the air compressor body 3 to share the weight of the equipment and prevent the base from deforming. The ground wheel 4 at the bottom of the base enables the overall movement of the device, which is suitable for industrial scenarios that require frequent position adjustments. The mounting groove 9 is opened at the front and rear ends of the base, and the connecting shaft 6 and the positioning plate 7 are inserted inside. The protrusion 8 at the bottom of the positioning plate can be inserted into the ground fixing hole. After rotating the positioning plate 7, the protrusion 8 on it abuts against the base 1 for locking and preventing shaking during operation.

[0026] Working principle and implementation method: First, the water pump 30 draws low-temperature coolant from the recovery tank 35 and injects it into the heat exchange tube 18 through the discharge pipe 21, valve 22 and third connecting pipe 24. The coolant flows in the rotating heat exchange tube driven by the motor 33 and driven by the belt 29 and gears 25 / 26. It fully contacts the fluid in the recovery tank to release heat. After being heated, it enters the air compressor body 3 through the first connecting pipe 11 to absorb the residual heat of compression at 80-120℃. During implementation, the base 1 is moved to the designated position via the ground wheel 4, the positioning plate 7 is inserted into the mounting slot 9 and rotated to lock the protrusion 8 into the ground; the air compressor is fixed to the front end of the base via the load-bearing frame 2, and the recovery tank 35 is quickly installed on the mounting frame 5 via the positioning block 10. After starting, the motor 33 drives the heat exchange tube 18 to rotate, the water pump 30 establishes circulation, the valve 22 adjusts the flow rate to adapt to the load, the rotary heat exchange design improves the heat exchange efficiency by 30% and prevents scaling, the filter screen 12 and the baffle 14 optimize the fluid path, and the recovery tank can be removed as a whole for maintenance by disassembling the positioning block 10.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for an air compressor, comprising: The base (1) is characterized in that: a mounting frame (5) is installed on the top of the rear end of the outer surface of the base (1), and positioning blocks (10) are fixedly installed on the left and right sides inside the mounting frame (5). A recycling tank (35) is inserted into the positioning block (10), and a fixing plate (27) is installed on the rear end of the inner shaft surface of the recycling tank (35). A first gear (25) is provided on the front end of the outer surface of the fixing plate (27), and the fixing plate (27) and the first gear (25) are connected by a rotating rod. Two sets of mounting shafts (20) are fixedly installed on the front end of the outer surface of the first gear (25). A heat exchange tube (18) is fixedly installed at the front end of the shaft surface of (20). A second annular tube (19) is installed at the rear end of the shaft surface of the heat exchange tube (18). A discharge pipe (21) is installed at the end of the outer surface of the second annular tube (19) near the shaft (20). A valve (22) is installed at the front end of the shaft surface of the discharge pipe (21). A third connecting pipe (24) is fixedly installed on one side of the outer surface of the valve (22). A water pump (30) is installed through the outer surface of the recovery tank (35) on the shaft surface of the third connecting pipe (24). An air compressor body (3) is installed at the top end of the shaft surface of the water pump (30).

2. A waste heat recovery device for an air compressor according to claim 1, characterized in that: The heat exchange tube (18) has a plurality of sets of second connecting tubes (17) on its axial surface, and the rear end of the axial surface of the second connecting tube (17) is connected to the heat exchange tube (18). The front end of the axial surface of the second connecting tube (17) is equipped with a first annular tube (16), and the front end of the outer surface of the first annular tube (16) is inserted with a feed tube (15).

3. A waste heat recovery device for an air compressor as claimed in claim 1, wherein: The mounting frame (5) has a mounting plate (34) installed at the top and bottom of its outer surface. A motor (33) is installed on the rear side of the outer surface of the mounting plate (34). A second rotating shaft (32) is fixedly installed at the output end of the motor (33). A second rotating wheel (31) is inserted into the shaft surface of the second rotating shaft (32). A belt (29) is sleeved on the outer surface of the second rotating wheel (31). A first rotating wheel (28) is sleeved on one end of the outer surface of the belt (29).

4. A waste heat recovery device for an air compressor according to claim 3, characterized in that: A first rotating shaft (23) is inserted into the middle of the outer surface of the first rotating wheel (28), a second gear (26) is inserted into the front end of the shaft surface of the first rotating shaft (23), and a first gear (25) is meshed with the bottom end of the outer surface of the second gear (26).

5. A waste heat recovery device for an air compressor according to claim 1, characterized in that: The first connecting pipe (11) is installed at the front end of the shaft surface of the recycling tank (35), the filter screen (12) is installed at the front end of the inner side of the recycling tank (35), the partition (14) is installed at the rear end of the filter screen (12) on the inner side of the shaft surface of the recycling tank (35), and the feed shaft (13) is fixedly installed at the front end of the shaft surface of the partition (14).

6. A waste heat recovery device for an air compressor according to claim 1, characterized in that: A load-bearing frame (2) is inserted into the front side of the top of the outer surface of the base (1), and the top of the outer surface of the load-bearing frame (2) abuts against the air compressor body (3). A first connecting pipe (11) is installed at the rear end of the shaft surface of the air compressor body (3), and several sets of ground wheels (4) are installed at the bottom of the outer surface of the base (1).

7. A waste heat recovery device for an air compressor according to claim 1, characterized in that: The base (1) has mounting grooves (9) on both the front and rear ends of its outer surface. A connecting shaft (6) is inserted into the inner side of the mounting groove (9). A positioning plate (7) is inserted into the shaft surface of the connecting shaft (6). A protrusion (8) is provided on the outer surface of the positioning plate (7) near the bottom.

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