Heat exchanger for waste water heat recovery

Abstract

The utility model discloses a heat exchanger for wastewater waste heat recovery belongs to heat exchanger technical field, including heat exchanger main part, the both sides of heat exchanger main part lower extreme fixed support base, heat exchanger main part one end is fixed with the pipe that turns, and the upper end fixed connection flange of pipe that turns is provided with the filter screen in the pipe that turns, and is provided with the heat exchange pipe in heat exchanger main part, and is provided with the water outlet and the water inlet respectively in heat exchange pipe both ends, and is provided with the stirring subassembly in heat exchanger main part, the utility model discloses set up stirring subassembly, and when opening motor drive bull gear rotation of heat exchange work, and bull gear rotation is driven to rotate the link rod no.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, specifically relating to a heat exchanger for wastewater waste heat recovery. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid; it is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food, and many other industrial production processes. In chemical production, heat exchangers are widely used as heaters, coolers, condensers, evaporators, and reboilers.

[0003] Chinese patent application number 2022234022140 discloses a heat exchanger for wastewater waste heat recovery, including a heat exchanger body, with support bases fixedly connected to both sides of the bottom of the heat exchanger body, a filter mechanism provided on the left side of the heat exchanger body, a recovery mechanism provided inside the heat exchanger body, and through pipes fixedly connected to both sides of the top of the heat exchanger body.

[0004] The aforementioned patent does not have a stirring function, and cannot stir the industrial hot water that is exchanging heat inside the heat exchanger body. The temperature of the hot water is concentrated in some areas, the overall heat distribution is uneven, and the heat exchange efficiency is low. At the same time, the original device prevents impurities in the industrial hot water from entering the heat exchanger body by setting a filter plate, but using nuts and other materials to install and fix the filter screen is not conducive to quick disassembly and cleaning of the filter screen. Utility Model Content

[0005] To address the problems mentioned in the background section, this utility model provides a heat exchanger for wastewater waste heat recovery, which has a stirring function to stir the hot water in the heat exchanger body and features high heat exchange efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a heat exchanger for wastewater waste heat recovery, comprising a heat exchanger body, with supporting bases fixed on both sides of the lower end of the heat exchanger body, a folded tube fixed at one end of the heat exchanger body, a connecting flange fixed at the upper end of the folded tube, a filter screen installed inside the folded tube, a heat exchange tube installed inside the heat exchanger body, an outlet end and an inlet end respectively installed at both ends of the heat exchange tube, and a stirring assembly installed inside the heat exchanger body;

[0007] The stirring assembly includes a fixed frame, a rotating rod one, a rotating rod two, a stirring rod, a motor, a large gear, and a small gear. The rotating rod one is rotatably connected to one side of the heat exchanger body, and the rotating rod two is set on one side of the rotating rod one. Several stirring rods are fixed on both the rotating rod one and the rotating rod two inside the heat exchanger body. A small gear is fixed to the end of the rotating rod one and the rotating rod two away from the bend tube. A fixed frame is fixed at one end of the heat exchanger body at the position corresponding to the small gear. A motor is installed at one end of the fixed frame at the position corresponding to the small gear. A large gear is set at the output end of the motor.

[0008] Preferably, the stirring rods on the first and second rotating rods are staggered from each other with respect to the heat exchange tubes, and a bearing rotating seat is provided between the first and second rotating rods and the heat exchanger body.

[0009] Preferably, a pressure relief valve is installed at the middle position of the upper end of the heat exchanger body, and a drain valve is installed at the middle position of the lower end of the heat exchanger body.

[0010] Preferably, the fixed frame is welded to the heat exchanger body and the pinion is welded to the rotating rod one and rotating rod two by pressure welding, and the several stirring rods are evenly distributed.

[0011] Preferably, the filter screen is fixed with connecting frames on both sides at the upper end, and a locking block is fixed at the other end of the connecting frame. A lifting rod is fixed at the upper end of the locking block. The upper end of the folded tube is provided with locking grooves corresponding to the locking blocks on both sides. A support ring is fixed at the position inside the folded tube corresponding to the filter screen.

[0012] Preferably, after the card block enters the card slot, the upper end of the lifting rod is lower than the upper end of the folded tube, and after the filter screen is installed into the folded tube, the side of the filter screen is in close contact with the inner wall of the folded tube.

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

[0014] 1. This utility model, by setting up a stirring assembly, turns on the motor to drive the large gear to rotate during heat exchange. The rotation of the large gear drives the small gear to rotate the first and second rotating rods in the heat exchanger body. The rotation of the first and second rotating rods stirs the industrial hot water inside the heat exchanger body through several stirring rods. The stirring will destroy the laminar boundary layer on the hot water side, increase the degree of turbulence, thereby reducing thermal resistance and improving heat transfer efficiency.

[0015] 2. This utility model features a folded tube. When installing the filter screen, the filter screen is placed into the folded tube, and at the same time, the locking blocks on the upper ends of the connecting brackets on both sides of the filter screen enter the locking slots. When the filter screen needs to be removed, the locking blocks can be pulled out of the locking slots using the lifting rod. The locking blocks can then be used to remove the filter screen from the folded tube via the connecting brackets. The folded tube design facilitates quick disassembly and cleaning of the filter screen. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a three-dimensional cross-sectional view of the heat exchanger body of this utility model;

[0018] Figure 3 This is a perspective view of rotating rod one and rotating rod two of this utility model;

[0019] Figure 4 This is a three-dimensional cross-sectional view of the folded tube during the installation of the filter screen of this utility model.

[0020] In the diagram: 1. Heat exchanger body; 2. Stirring assembly; 21. Fixing frame; 22. Rotating rod one; 23. Rotating rod two; 24. Stirring rod; 25. Motor; 26. Large gear; 27. Small gear; 3. Water outlet; 4. Water inlet; 5. Connecting flange; 6. Bent pipe; 7. Support base; 8. Heat exchanger tube; 9. Filter screen; 10. Connecting frame; 11. Locking block; 12. Lifting rod; 13. Locking groove; 14. Support ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Please see Figure 1-4 The present invention provides the following technical solution: a heat exchanger for wastewater waste heat recovery, comprising a heat exchanger body 1, a support base 7 fixed on both sides of the lower end of the heat exchanger body 1, a folded pipe 6 fixed on one end of the heat exchanger body 1, a connecting flange 5 fixed on the upper end of the folded pipe 6, a filter screen 9 provided inside the folded pipe 6, a heat exchange tube 8 provided inside the heat exchanger body 1, an outlet end 3 and an inlet end 4 respectively provided at both ends of the heat exchange tube 8, and a stirring assembly 2 provided inside the heat exchanger body 1;

[0024] The stirring assembly 2 includes a fixed frame 21, a first rotating rod 22, a second rotating rod 23, a stirring rod 24, a motor 25, a large gear 26, and a small gear 27. The first rotating rod 22 is rotatably connected to one side of the heat exchanger body 1, and the second rotating rod 23 is provided on one side of the first rotating rod 22. Several stirring rods 24 are fixed on both the second rotating rod 23 and the first rotating rod 22 inside the heat exchanger body 1. A small gear 27 is fixed to the end of the first rotating rod 22 and the second rotating rod 23 away from the bend tube 6. A fixed frame 21 is fixed at one end of the heat exchanger body 1 at the position corresponding to the small gear 27. A motor 25 is installed at one end of the fixed frame 21 at the position corresponding to the small gear 27. A large gear 26 is provided at the output end of the motor 25.

[0025] Specifically, the stirring rods 24 on the first rotating rod 22 and the second rotating rod 23 are staggered from each other with the heat exchange tube 8, and bearing rotating seats are provided between the first rotating rod 22 and the second rotating rod 23 and the heat exchanger body 1.

[0026] By adopting the above technical solution, when performing heat exchange, the motor 25 is turned on to drive the large gear 26 to rotate. The rotation of the large gear 26 drives the first rotating rod 22 and the second rotating rod 23 to rotate in the heat exchanger body 1 through the small gear 27. The rotation of the first rotating rod 22 and the second rotating rod 23 stirs the industrial hot water inside the heat exchanger body 1 through several stirring rods 24. The stirring will destroy the laminar boundary layer on the hot water side, increase the degree of turbulence, thereby reducing thermal resistance and improving heat transfer efficiency.

[0027] Specifically, a pressure relief valve is installed at the middle position of the upper end of the heat exchanger body 1, and a drain valve is installed at the middle position of the lower end of the heat exchanger body 1.

[0028] By adopting the above technical solution, a pressure relief valve can be set to relieve the internal pressure of the heat exchanger body 1, and a drain valve can be set to discharge the industrial hot water used in the heat exchanger body 1.

[0029] Specifically, the fixed frame 21 is welded to the heat exchanger body 1, and the pinion 27 is welded to the rotating rod 22 and the rotating rod 23 by pressure welding. The stirring rods 24 are evenly distributed.

[0030] By adopting the above technical solution, pressure welding makes the fixed frame 21 and the heat exchanger body 1 more secure, as well as the pinion 27 and the rotating rod 22 and the rotating rod 23 more secure. The stirring rods 24 are evenly distributed among each other, making the stirring range more uniform and improving the stirring effect.

[0031] In this embodiment, when the heat exchanger for wastewater heat recovery is used, the device is installed in a suitable position. The industrial pipeline is connected to the bend pipe 6 through the connecting flange 5. The industrial hot water is discharged into the heat exchanger body 1 through the bend pipe 6. Then, cold water is introduced into the heat exchange tube 8 through the inlet end 4. The industrial hot water in the heat exchanger body 1 heats the cold water in the heat exchange tube 8 for heat exchange. The heated cold water is discharged from the heat exchange tube 8 through the outlet end 3. When the heat exchange is working, the motor 25 is turned on to drive the large gear 26 to rotate. The rotation of the large gear 26 drives the rotating rod 22 and the rotating rod 23 to rotate in the heat exchanger body 1 through the small gear 27. The rotation of the rotating rod 22 and the rotating rod 23 stirs the industrial hot water inside the heat exchanger body 1 through several stirring rods 24. The stirring will destroy the laminar boundary layer on the hot water side, increase the degree of turbulence, thereby reducing the thermal resistance and improving the heat transfer efficiency.

[0032] Example 2

[0033] The difference between this embodiment and embodiment 1 is that: a connecting frame 10 is fixed on both sides of the upper end of the filter screen 9, a locking block 11 is fixed on the other end of the connecting frame 10, a lifting rod 12 is fixed on the upper end of the locking block 11, a slot 13 corresponding to the locking block 11 is opened on both sides of the upper end of the folded tube 6, and a support ring 14 is fixed inside the folded tube 6 at the position corresponding to the filter screen 9.

[0034] By adopting the above technical solution, when installing the filter screen 9, the filter screen 9 is placed in the folded tube 6. At the same time, the locking blocks 11 on the upper ends of the connecting brackets 10 on both sides of the filter screen 9 enter the locking slots 13. When the filter screen 9 needs to be removed, the locking blocks 11 can be pulled out of the locking slots 13 by the lifting rod 12. The locking blocks 11 can remove the filter screen 9 from the folded tube 6 through the connecting brackets 10. By setting the folded tube 6, it is convenient to quickly disassemble and clean the filter screen 9.

[0035] Specifically, after the card block 11 enters the card slot 13, the upper end of the lifting rod 12 is lower than the upper end of the folded tube 6. After the filter screen 9 is installed into the folded tube 6, the side of the filter screen 9 is in close contact with the inner wall of the folded tube 6.

[0036] By adopting the above technical solution, after the card block 11 enters the card slot 13, the upper end of the lifting rod 12 is lower than the upper end of the folded tube 6 to avoid the upper end of the lifting rod 12 protruding from the upper end of the folded tube 6 and affecting the connection with the industrial pipeline. After the filter screen 9 is installed into the folded tube 6, the side of the filter screen 9 fits more closely with the inner wall of the folded tube 6.

[0037] In this embodiment, when installing the filter screen 9, the filter screen 9 is placed into the folded tube 6. At the same time, the locking blocks 11 on the upper ends of the connecting brackets 10 on both sides of the upper end of the filter screen 9 enter the locking slots 13. When the filter screen 9 needs to be removed, the locking blocks 11 can be pulled out of the locking slots 13 by the lifting rod 12. The locking blocks 11 can remove the filter screen 9 from the folded tube 6 through the connecting brackets 10. The folded tube 6 and other features facilitate quick disassembly and cleaning of the filter screen 9.

[0038] In this utility model, the motor 25 is a previously disclosed technology, and the selected model is 5IK120GN-CF.

[0039] The structure and working principle of the heat exchanger body 1, water outlet 3, water inlet 4, support base 7, heat exchange tube 8 and filter screen 9 in this utility model have been disclosed in a heat exchanger for wastewater waste heat recovery disclosed in Chinese patent application number 2022234022140.

[0040] The working principle and usage process of this utility model: When using the heat exchanger for wastewater waste heat recovery, the device is installed in a suitable position. The industrial pipeline is connected to the bend pipe 6 through the connecting flange 5. Industrial hot water is discharged into the heat exchanger body 1 through the bend pipe 6. Then, cold water is introduced into the heat exchange tube 8 through the inlet end 4. The industrial hot water in the heat exchanger body 1 heats the cold water in the heat exchange tube 8 for heat exchange. The heated cold water is discharged from the heat exchange tube 8 through the outlet end 3. When the heat exchange is in operation, the motor 25 is turned on to drive the large gear 26 to rotate. The rotation of the large gear 26 drives the rotating rod 22 and the rotating rod 23 to rotate in the heat exchanger body 1 through the small gear 27. Rotating rod 1 22 and rotating rod 23 rotate to stir the industrial hot water inside the heat exchanger body 1 through several stirring rods 24. The stirring will destroy the laminar boundary layer on the hot water side, increase the degree of turbulence, thereby reducing thermal resistance and improving heat transfer efficiency. When installing the filter screen 9, the filter screen 9 is placed in the folded tube 6. At the same time, the locking blocks 11 on the upper ends of the connecting brackets 10 on both sides of the upper end of the filter screen 9 enter the locking slots 13. When the filter screen 9 needs to be removed, the locking blocks 11 can be pulled out from the locking slots 13 by lifting rod 12. The locking blocks 11 can remove the filter screen 9 from the folded tube 6 through the connecting brackets 10. The folded tube 6 and other features facilitate the quick disassembly and cleaning of the filter screen 9.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat exchanger for wastewater waste heat recovery, comprising a heat exchanger body (1), characterized in that: The heat exchanger body (1) has a support base (7) fixed on both sides of the lower end. A folded pipe (6) is fixed at one end of the heat exchanger body (1). A connecting flange (5) is fixed at the upper end of the folded pipe (6). A filter screen (9) is installed inside the folded pipe (6). A heat exchange tube (8) is installed inside the heat exchanger body (1). A water outlet (3) and a water inlet (4) are respectively installed at both ends of the heat exchange tube (8). A stirring assembly (2) is installed inside the heat exchanger body (1). The stirring assembly (2) includes a fixed frame (21), a rotating rod one (22), a rotating rod two (23), a stirring rod (24), a motor (25), a large gear (26), and a small gear (27). The rotating rod one (22) is rotatably connected to one side of the heat exchanger body (1), and a rotating rod two (23) is provided on one side of the rotating rod one (22). Several stirring rods (24) are fixed on the rotating rod two (23) and the rotating rod one (22) inside the heat exchanger body (1). A small gear (27) is fixed at the end of the rotating rod one (22) and the rotating rod two (23) away from the bend tube (6). A fixed frame (21) is fixed at one end of the heat exchanger body (1) at the position corresponding to the small gear (27). A motor (25) is installed at one end of the fixed frame (21) at the position corresponding to the small gear (27). A large gear (26) is provided at the output end of the motor (25).

2. The heat exchanger for wastewater waste heat recovery according to claim 1, characterized in that: The stirring rods (24) on the first rotating rod (22) and the second rotating rod (23) are all staggered from each other to the heat exchange tube (8), and the rotating rods (22) and the second rotating rod (23) are all provided with bearing rotating seats between the rotating rods (22) and the heat exchanger body (1).

3. The heat exchanger for wastewater waste heat recovery according to claim 1, characterized in that: A pressure relief valve is installed at the middle position of the upper end of the heat exchanger body (1), and a drain valve is installed at the middle position of the lower end of the heat exchanger body (1).

4. A heat exchanger for wastewater waste heat recovery according to claim 1, characterized in that: The fixed frame (21) and the heat exchanger body (1) are welded together by pressure welding as are the pinion (27) and the rotating rod one (22) and the rotating rod two (23). The stirring rods (24) are equidistantly distributed.

5. A heat exchanger for wastewater waste heat recovery according to claim 1, characterized in that: The filter screen (9) has connecting frames (10) fixed on both sides of its upper end, and a locking block (11) fixed on the other end of the connecting frame (10). A lifting rod (12) is fixed on the upper end of the locking block (11). The upper sides of the folded tube (6) have slots (13) corresponding to the locking block (11). A support ring (14) is fixed inside the folded tube (6) at the position corresponding to the filter screen (9).

6. A heat exchanger for wastewater waste heat recovery according to claim 5, characterized in that: After the card block (11) enters the card slot (13), the upper end of the lifting rod (12) is lower than the upper end of the folded tube (6). After the filter screen (9) is installed into the folded tube (6), the side of the filter screen (9) is tightly attached to the inner wall of the folded tube (6).

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