Circulating water heat recovery device

Abstract

The utility model relates to the technical field of energy recovery, in particular to a circulating water heat recovery device which comprises a plurality of heat exchangers, heat conveying pipes are arranged on the heat exchangers, a first water conveying pipe and a second water conveying pipe are arranged between every two adjacent heat exchangers, and a conversion valve is arranged between each first water conveying pipe and the corresponding second water conveying pipe. A first water inlet pipe and a water outlet pipe are arranged on the conversion valve, a second water inlet pipe is arranged on one side of any heat exchanger, heat exchange modes can be flexibly selected according to actual production requirements, and different working conditions can be better adapted.

Description

Technical Field

[0001] This utility model relates to the field of energy recovery technology, and more specifically, to a circulating water heat recovery device. Background Technology

[0002] A circulating water heat recovery device is a highly efficient and energy-saving equipment that extracts heat from circulating water through heat exchange technology. This heat is then used to preheat cold water, provide heating, or supply hot water, thereby significantly improving energy utilization efficiency and reducing energy consumption and costs. The device is typically equipped with plate or coaxial heat exchangers. In addition, to enhance performance and adaptability, structures such as water treatment, energy storage, multi-stage recovery, and heat pump assistance can be added. A circulating water heat recovery device not only saves energy but also reduces carbon emissions, resulting in significant economic and environmental benefits. It is particularly widely used in the pharmaceutical field.

[0003] For example, Chinese Patent Publication No. CN202120683238.4 discloses a circulating water heat recovery device for electric furnaces, which includes a flue gas settling device and a spray tower. The flue gas settling device has a spiral inner cavity filled with circulating water. A slag hopper is located at the bottom of the flue gas settling device. The upper opening of the inner cavity of the flue gas settling device is connected to a second exhaust pipe, and the other end of the second exhaust pipe is connected to the spray tower. A filter layer is located at the bottom of the spray tower, and the water outlet at the bottom of the spray tower is connected to a staged heat exchange system. The staged heat exchange system is connected to a steam ball and a heat exchanger. The water outlet of the heat exchanger is connected to the circulating water in the flue gas settling device. A water outlet pipe is connected to the upper part of the flue gas settling device, and a steam ball is located at the other end of the water outlet pipe. A heat accumulator is connected to the top of the steam ball through a pipe, and a hot water pipe is connected to the bottom of the steam ball. This utility model has the advantages of high heat exchange efficiency, high steam production, low power consumption, and high safety.

[0004] However, in the above-mentioned technical solutions, a circulating water heat recovery device achieves energy reuse by recovering heat from the circulating water, which significantly reduces energy consumption and environmental pollution. However, with the diversification and complexity of production needs, different heat exchange modes are required according to different production needs. For example, when there is less circulating water, it is best to perform multiple heat recovery operations to fully recover the heat in the circulating water and reduce heat loss. When there is more circulating water, it is necessary to perform single heat recovery operations to quickly process a large amount of circulating water. However, a traditional circulating water heat recovery device usually only has a single heat exchange mode, which is difficult to meet the heat exchange needs under different working conditions. Utility Model Content

[0005] The main objective of this invention is to provide a circulating water heat recovery device that effectively solves the problem of existing circulating water heat recovery devices that achieve energy reuse by recovering heat from circulating water, significantly reducing energy consumption and environmental pollution. However, with the diversification and complexity of production needs, different heat exchange modes are required depending on the specific production requirements. For example, when there is a small amount of circulating water, it is best to perform multiple heat recovery operations to fully recover the heat in the circulating water and reduce heat loss. Conversely, when there is a large amount of circulating water, a single heat recovery operation is needed to quickly process the large volume of circulating water. Traditional circulating water heat recovery devices typically only have a single heat exchange mode, which is insufficient to meet the heat exchange requirements under different operating conditions.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a circulating water heat recovery device, comprising a plurality of heat exchangers, wherein heat transfer pipes are provided on the heat exchangers, a first water supply pipe and a second water supply pipe are provided between two adjacent heat exchangers, a diverting valve is provided between the first water supply pipe and the second water supply pipe, wherein a first water inlet pipe and a water outlet pipe are provided on the diverting valve, and a second water inlet pipe is provided on one side of any of the heat exchangers.

[0007] Preferably, the steering valve includes a steering valve base, on which a first three-way groove is provided, and a ball groove is provided on the first three-way groove.

[0008] Preferably, a ball valve is provided in the ball groove, the ball valve is provided with a second three-way groove and a water outlet groove, a rotating column is provided on one side of the ball valve, a knob is provided on the rotating column, and a pointer is provided on the knob.

[0009] Preferably, the side of the ball groove that is detached from the rotating column is provided with a water outlet.

[0010] Preferably, the first water supply pipe, the first water inlet pipe and the first three-way groove are interconnected, and the water outlet groove and the water outlet are interconnected.

[0011] Preferably, the rotating column is rotatably connected to the base of the diverting valve, and the water outlet is interconnected with the water outlet pipe.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) When this utility model is used, when multiple heat recovery of circulating water is required, circulating water is injected into a heat exchanger through the second inlet pipe for initial heat recovery. Then, the circulating water in this heat exchanger is transported to another heat exchanger 1 through the first water supply pipe, the diverting valve, and the second water supply pipe for heat recovery again. This cycle is repeated to perform multiple heat recovery of circulating water, fully recovering the heat in the circulating water and reducing heat loss. When there is a lot of circulating water, turn the knob to disconnect the circulation of circulating water between several heat exchangers, and then inject circulating water into the first inlet pipe. The circulating water in the first inlet pipe moves through the first three-way groove and the second three-way groove to the second water supply pipe, and then the circulating water is poured into a heat exchanger through the second water supply pipe for heat recovery. Thus, the circulating water is recovered in a single operation through multiple heat exchangers, which can quickly process a large amount of circulating water. The heat exchange mode can be flexibly selected according to actual production needs to better adapt to different working conditions. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a circulating water heat recovery device according to the present invention;

[0015] Figure 2 This is a schematic diagram of the diverting valve in a circulating water heat recovery device according to the present invention;

[0016] Figure 3 This is a schematic diagram of the internal structure of the diverting valve in a circulating water heat recovery device according to this utility model.

[0017] In the diagram: 1. Heat exchanger; 2. Heat transfer pipe; 3. First water supply pipe; 4. Diverting valve; 401. Diverting valve base; 402. First tee groove; 403. Ball groove; 404. Ball valve; 405. Second tee groove; 406. Water outlet groove; 407. Rotating column; 408. Knob; 409. Indicator; 4010. Water outlet; 5. First water inlet pipe; 6. Water outlet pipe; 7. Second water inlet pipe; 8. Second water supply pipe. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0019] like Figure 1As shown, a circulating water heat recovery device includes several heat exchangers 1. Each heat exchanger 1 is provided with a heat transfer pipe 2. A first water supply pipe 3 and a second water supply pipe 8 are provided between two adjacent heat exchangers 1. A diverting valve 4 is provided between the first water supply pipe 3 and the second water supply pipe 8. The diverting valve 4 is provided with a first water inlet pipe 5 and a water outlet pipe 6. A second water inlet pipe 7 is provided on one side of any of the heat exchangers 1.

[0020] like Figure 2 and Figure 3 As shown, in another embodiment of the present invention, the steering valve 4 includes a steering valve base 401, a first three-way groove 402 is provided on the steering valve base 401, and a ball groove 403 is provided on the first three-way groove 402.

[0021] A ball valve 404 is provided inside the ball groove 403. The ball valve 404 is provided with a second three-way groove 405 and a water outlet groove 406. A rotating column 407 is provided on one side of the ball valve 404. A knob 408 is provided on the rotating column 407. An indicator 409 is provided on the knob 408.

[0022] The ball groove 403 is provided with a water outlet 4010 on the side that is separated from the rotating column 407;

[0023] When multiple heat recovery operations are required for the circulating water, the circulating water is injected into a heat exchanger 1 through the second inlet pipe 7 for initial heat recovery. Then, the circulating water in this heat exchanger 1 moves through the first water delivery pipe 3 into the first three-way groove 402, then through the second three-way groove 405, and moves into the second water delivery pipe 8. During this period, the outlet of the first three-way groove 402 near the second inlet pipe 7 is closed by the ball valve 404, so the circulating water cannot flow to the second inlet pipe 7. Finally, the circulating water is moved to another heat exchanger 1 through the second water delivery pipe 8 for heat recovery again. This cycle is repeated to perform multiple heat recovery operations for the circulating water, fully recovering the heat in the circulating water and reducing heat loss.

[0024] When there is a large amount of circulating water, turn knob 408. Knob 408 drives ball valve 404 to rotate via rotating column 407, turning ball valve 404 90 degrees. At this time, the water outlet trough 406 on ball valve 404 rotates from the side near the first inlet pipe 5 to the side near the second delivery pipe 8. The orientation of water outlet trough 406 is marked using indicator 409. Water outlet trough 406 is now located near the first delivery pipe 3, disconnecting the circulating water flow between several heat exchangers 1. Then, circulating water is injected into the first inlet pipe 5. The circulating water in the first inlet pipe 5 passes through... The water flows through the first three-way groove 402 and the second three-way groove 405 to the second water supply pipe 8. Then, through the second water supply pipe 8, the circulating water is poured into a heat exchanger 1 for heat recovery. The water discharged from the heat exchanger 1 into the first water supply pipe 3 flows through another part of the first three-way groove 402 into the outlet groove 406, then through the outlet groove 406 into the outlet 4010, and then through the outlet 4010 into the outlet pipe 6, and is discharged to a designated place. In this way, the circulating water is subjected to single-time heat recovery through multiple heat exchangers 1, and a large amount of circulating water is processed quickly.

[0025] The working principle of this circulating water heat recovery device:

[0026] In operation, when multiple heat recovery cycles of the circulating water are required, circulating water is injected into one heat exchanger 1 through the second inlet pipe 7 for initial heat recovery. Then, the circulating water in this heat exchanger 1 is transported to another heat exchanger 1 through the first water supply pipe 3, the diverting valve 4, and the second water supply pipe 8 for further heat recovery. This cycle is repeated to achieve multiple heat recovery cycles, fully recovering the heat in the circulating water and reducing heat loss. When there is a large amount of circulating water, the knob 408 is turned. The knob 408, through the rotating column 407, drives the ball valve 404 to rotate, turning the ball valve 404 ninety degrees to disconnect the circulating water flow between several heat exchangers 1. Then, water is injected into the first inlet pipe 5. The circulating water in the first inlet pipe 5 flows through the first three-way groove 402 and the second three-way groove 405 to the second water delivery pipe 8. Then, the circulating water is poured into a heat exchanger 1 through the second water delivery pipe 8 for heat recovery. The water discharged from the heat exchanger 1 into the first water delivery pipe 3 flows through another part of the first three-way groove 402 into the outlet groove 406, then into the outlet 4010, and finally into the outlet pipe 6, and is discharged to a designated place. In this way, the circulating water is subjected to single heat recovery through multiple heat exchangers 1, which can quickly process a large amount of circulating water. The heat exchange mode can be flexibly selected according to the actual production needs to better adapt to different working conditions.

[0027] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A circulating water heat recovery device comprising several heat exchangers (1), characterized in that: The heat exchanger (1) is provided with a heat pipe (2), two adjacent heat exchangers (1) are provided with a first water pipe (3) and a second water pipe (8), the first water pipe (3) and the second water pipe (8) are provided with a diversion valve (4), the diversion valve (4) is provided with a first water inlet pipe (5) and a water outlet pipe (6), and any one side of the heat exchanger (1) is provided with a second water inlet pipe (7).

2. A water heat recovery device according to claim 1, wherein: The diversion valve (4) comprises a diversion valve base (401), the diversion valve base (401) is provided with a first three-way groove (402), and the first three-way groove (402) is provided with a ball groove (403).

3. A water heat recovery device according to claim 2, wherein: The ball groove (403) is provided with a ball valve (404), the ball valve (404) is provided with a second three-way groove (405) and a water outlet groove (406), one side of the ball valve (404) is provided with a rotating column (407), the rotating column (407) is provided with a knob (408), and the knob (408) is provided with a pointing mark (409).

4. A water heat recovery device according to claim 3, wherein: The side, away from the rotating column (407), of the ball groove (403) is provided with a water outlet (4010).

5. A water heat recovery device according to claim 4, wherein: The first water pipe (3), the first water inlet pipe (5) and the first three-way groove (402) are in communication with each other, and the water outlet groove (406) and the water outlet (4010) are in communication with each other.

6. A water heat recovery device according to claim 5, wherein: The rotating column (407) is rotationally connected with the diversion valve base (401), and the water outlet (4010) and the water outlet pipe (6) are in communication with each other.

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