Cooling waste heat recovery system

Abstract

The utility model belongs to the technical field of waste heat recovery, and particularly discloses a cooling waste heat recovery system which comprises a water tank body, a first partition plate and a second partition plate which are transversely arranged are arranged in the water tank body, and the water tank body is divided into a cold water cavity, a hot water cavity and a regulation and control cavity. A first water inlet pipe is arranged at the top of the cold water cavity and used for communicating with an external cold water pipe. A second water inlet pipe is arranged at the top of the hot water cavity and used for communicating with cooling kiln cooling water. And a regulating valve is arranged in the regulating chamber and is used for mixing hot water and cold water, discharging the mixture from the water outlet and communicating the mixture to heating equipment through a conveying pipeline. Cooling water and tap water are collected in the water tank body, the water tank body is divided into the cold water cavity, the hot water cavity and the regulation and control cavity through the partition plates, the cold water and the hot water are mixed in the regulation and control cavity, then the temperature of mixed water is controlled, and the heating requirement of a user is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat recovery, and in particular relates to a cooling waste heat recovery system. Background Art

[0002] The rotary kiln is a key piece of equipment in the production of ceramsite sand, transforming it from semi-finished products to finished products. Semi-finished products enter the rotary kiln through the kiln's tailgate. Natural gas, providing a heat source, enters the kiln through burners at the kiln's head. As the kiln rotates, the semi-finished products undergo radial and axial displacement, gradually absorbing heat and being calcined into finished products. After calcination, the ceramsite sand flows through a chute into a cooling kiln. Cooling in the kiln occurs both internally and externally. Internally, the ceramsite sand is cooled primarily through contact with flowing air, while externally, the sand is cooled indirectly by spraying natural water onto the kiln.

[0003] To achieve energy conservation and emission reduction, more and more companies are recycling the waste heat from rotary kiln cooling water for winter heating and other purposes. For example, Chinese patent publication number CN219914113U discloses a waste heat recovery device for cooling water in a thermal power plant. A soft ball installed on an anti-clogging component can knock on the filter screen to prevent clogging. The device also uses the waste heat from the cooling water to heat water that needs to be heated, thus recovering the waste heat. However, this solution only utilizes the heat from the cooling water, rather than directly using it as a heating medium. Furthermore, the temperature of the cooling water cannot be adjusted, making it difficult to meet heating needs. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects in the prior art and provide a cooling waste heat recovery system.

[0005] The utility model provides a cooling waste heat recovery system, comprising a water tank body, wherein the surface and bottom of the water tank body are both provided with an outwardly convex curved surface structure, a bracket is further provided on the outside of the water tank body, and the bracket is fixedly connected to the water tank body; a first partition plate arranged transversely is provided inside the water tank body, dividing the water tank body into a water injection chamber and a regulating chamber, and a second partition plate arranged longitudinally is further provided at the top center of the first partition plate, dividing the water injection chamber into a cold water chamber and a hot water chamber;

[0006] A first water inlet pipe is provided on the top of the cold water chamber, and the first water inlet pipe is connected to an external cold water pipe; a second water inlet pipe is provided on the top of the hot water chamber, and the second water inlet pipe is connected to the cooling water of the cooling kiln; a regulating valve is provided inside the control chamber, and a first water inlet and a second water inlet are provided on the top of the regulating valve, and a water outlet is provided at the bottom of the regulating valve, the first water inlet is connected to the cold water chamber through the first water outlet pipe, the second water inlet is connected to the hot water chamber through the second water outlet pipe, and the water outlet is connected to the heating equipment through a delivery pipe.

[0007] A further solution is that a driving part is provided on one side of the regulating valve, a valve core body is provided inside the regulating valve, the valve core body is slidingly connected to the regulating valve, and the driving part is connected to the valve core body through a linkage rod, which is used to adjust the opening of the first water inlet and the second water inlet.

[0008] A further solution is that a water distribution pipe is provided at the water outlet, and the water distribution pipe is a one-through-two structure, dividing the water outlet into a heating pipe and a cleaning pipe;

[0009] A first water outlet valve is provided at one end of the cleaning pipeline close to the water distribution pipe;

[0010] The heating pipeline is connected to the heating equipment through a delivery pipeline, and a second water outlet valve is provided at one end of the heating pipeline close to the water distribution pipe.

[0011] A further solution is that a water supply valve and a flow meter are sequentially provided on the first water inlet pipe along the water flow direction;

[0012] A filter and a peristaltic pump are sequentially arranged on the second water inlet pipe along the water flow direction.

[0013] A further solution is that a heat storage tank is provided inside the hot water chamber, a spiral tube is provided inside the heat storage tank, one end of the spiral tube is connected to the second water inlet pipe, and the other end of the spiral tube is connected to the second water outlet pipe;

[0014] The heat storage tank is filled with phase change material.

[0015] A further solution is that an overflow port is provided on the side wall of the cold water chamber, a liquid level tube is provided on the side wall of the cold water chamber, and the overflow port is provided at a height flush with the top of the liquid level tube.

[0016] A further solution is that a manhole is opened on the top of the water tank body, a cover plate is provided at the manhole, and the cover plate is hinged to the top of the water tank body.

[0017] A further solution is that a ladder is provided on one side of the water tank body close to the manhole, and the top of the ladder is fixedly connected to the top of the water tank body.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] (1) The utility model collects cooling water and tap water inside the water tank body, and divides the water tank body into a cold water chamber, a hot water chamber and a regulating chamber through a partition plate. By mixing cold water and hot water in the regulating chamber, the temperature of the mixed water is controlled to meet the user's heating needs.

[0020] (2) The regulating valve of the present invention is connected to a driving part, which can control the driving end according to the water temperature demand of the user end, and then adjust the opening of the first water inlet and the second water inlet, thereby playing the role of regulating the water temperature, and is suitable for users with different temperature requirements.

[0021] (3) The utility model provides a heat storage tank in the hot water chamber, and a spiral tube is provided in the heat storage tank, which is filled with phase change material, so that cooling water flows through the heat storage tank and the heat of the cooling water is preserved by the phase change material, thereby improving the efficiency of waste heat recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following drawings are only used to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0023] Figure 1 : Schematic diagram of the connection structure of the utility model;

[0024] Figure 2 : Schematic diagram of the water tank body structure;

[0025] Figure 3 : Schematic diagram of the internal structure of the water tank body;

[0026] In the figure: 1. Water tank body; 2. Cold water chamber; 3. Hot water chamber; 4. First water inlet pipe; 5. Second water inlet pipe; 6. Overflow port; 7. First water outlet pipe; 8. Second water outlet pipe; 9. Control chamber; 10. Regulating valve; 11. First water inlet; 12. Second water inlet; 13. Valve core; 14. Linkage rod; 15. Drive unit; 16. Water outlet; 17. Water distribution pipe; 18. Heating pipeline; 19. Cleaning pipeline; 20. Flow meter; 21. Water supply valve; 22. Peristaltic pump; 23. Filter; 24. First water outlet valve; 25. Second water outlet valve; 26. Ladder; 27. Liquid level pipe; 28. First partition plate; 29. Second partition plate; 30. Bracket; 31. Heat storage tank; 32. Spiral pipe; 33. Manhole; 34. Cover plate DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution, design method and advantages of the present invention more clear, the present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

[0028] like Figure 1-3 As shown, the utility model provides a cooling waste heat recovery system, including a water tank body 1. By collecting the cooling water of the cooling kiln and tap water into the water tank body 1 for mixing and regulating, the desired water temperature is obtained and then transported to the heating equipment for heating, thereby achieving the effects of green production, energy conservation and emission reduction. Specifically, the surface and bottom of the water tank body 1 are both provided with an outwardly protruding curved surface structure, which can effectively improve the bearing capacity of the water tank body 1. A bracket 30 is also provided on the outside of the water tank body 1, and the bracket 30 is fixedly connected to the water tank body 1. A manhole 33 is provided at the top of the water tank body 1 to facilitate inspection and maintenance of the interior of the water tank body 1. A cover plate 34 is provided at the manhole 33, and the cover plate 34 is hinged to the top of the water tank body 1. Since the water tank body 1 is relatively high, in order to facilitate reaching the top of the water tank body 1, a ladder 26 is provided on the side of the water tank body 1 close to the manhole 33, and the top of the ladder 26 is fixedly connected to the top of the water tank body 1.

[0029] A transversely arranged first partition plate 28 is provided inside the water tank body 1, dividing the water tank body 1 into a water filling chamber and a regulating chamber 9, and a longitudinally arranged second partition plate 29 is also provided at the top center of the first partition plate 28, dividing the water filling chamber into a cold water chamber 2 and a hot water chamber 3; a first water inlet pipe 4 is provided on the top of the cold water chamber 2, and the first water inlet pipe 4 is connected to an external cold water pipe or a tap water pipe to transport tap water or other cold water into the cold water chamber 2, and an overflow port 6 and a liquid level pipe 27 are provided on the side wall of the cold water chamber 2, wherein the setting height of the overflow port 6 is flush with the top of the liquid level pipe 27, so that the tap water level in the cold water chamber 1 can be observed, and the tap water that exceeds the liquid level requirement can be discharged from the overflow port 6 in time; the top of the hot water chamber 3 A second water inlet pipe 5 is provided, which is connected to the cooling water of the cooling kiln and transports the cooling water of the cooling kiln to the hot water chamber 3, wherein a water supply valve 21 and a flow meter 20 are sequentially provided on the first water inlet pipe 4 along the water flow direction, and a filter 23 and a peristaltic pump 22 are sequentially provided on the second water inlet pipe 5 along the water flow direction; a regulating valve 10 is provided inside the control chamber 9, and a first water inlet 11 and a second water inlet 12 are provided on the top of the regulating valve 10, and a water outlet 16 is provided at the bottom of the regulating valve 10, the first water inlet 11 is connected to the cold water chamber 2 through the first water outlet pipe 7, the second water inlet 12 is connected to the hot water chamber 3 through the second water outlet pipe 8, and the water outlet 16 is connected to the heating equipment through a conveying pipeline to realize waste heat recovery and heating.

[0030] In this scheme, a driving part 15 is provided on one side of the regulating valve 10, and a valve core body 13 is provided inside the regulating valve 10. The valve core body 13 is slidingly connected to the regulating valve 10, and the driving part 15 is connected to the valve core body 13 through a linkage rod 14, and is used to adjust the opening of the first water inlet 11 and the second water inlet 12. In this embodiment, the driving part 15 is a cylinder, and the linkage rod 14 is connected to the output end of the cylinder to realize the position adjustment of the valve core body 13. The diameters at both ends of the regulating valve core 13 are larger than the central diameter, and are used to block the first water inlet 11 and the second water inlet 12. When the regulating valve core 13 is located at the rightmost end of the regulating valve 10, the first water inlet 11 is closed and the second water inlet 12 is in a fully open state. When the regulating valve core 13 is located at the leftmost end of the regulating valve 10, the second water inlet 12 is closed and the first water inlet 11 is in a fully open state. When the regulating valve core 13 moves from the leftmost end to the rightmost end or from the rightmost end to the leftmost end of the regulating valve 10, the openings of the first water inlet 11 and the second water inlet 12 are adjusted in a trade-off manner. It should be noted that the water outlet 16 is normally open.

[0031] In order to meet the cleaning needs of the interior of the water tank body 1, a water distribution pipe 17 is provided at the water outlet 16. The water distribution pipe 17 is a one-through-two structure, which divides the water outlet 16 into a heating pipe 18 and a cleaning pipe 19; a first water outlet valve 24 is provided at one end of the cleaning pipe 19 close to the water distribution pipe 17; the heating pipe 18 is connected to the heating equipment through a conveying pipe, and a second water outlet valve 25 is provided at one end of the heating pipe 18 close to the water distribution pipe 17. When heating is required, the second water outlet valve 25 is opened and the first water outlet valve 24 is closed; when the interior of the water tank body 1 needs to be cleaned, the second water outlet valve 25 is closed, the first water outlet valve 24 is opened, and the sewage after cleaning is discharged from the cleaning pipe 19.

[0032] To further improve waste heat recovery efficiency, a heat storage tank 31 is installed within the hot water chamber 3. A spiral tube 32 is installed within the heat storage tank 31. One end of the spiral tube 32 is connected to the second water inlet pipe 5, and the other end is connected to the second water outlet pipe 8. The heat storage tank 31 is filled with a phase change material. As hot cooling water flows through the spiral tube 32, the phase change material preserves the heat in the cooling water, preventing heat loss.

[0033] While various embodiments of the present invention have been described above, the above descriptions are illustrative and non-exhaustive, and are not intended to be limiting of the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technological improvements in the marketplace, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A cooling waste heat recovery system, comprising a water tank body (1), wherein the surface and bottom of the water tank body (1) are both provided with an outwardly convex curved surface structure, and a bracket (30) is further provided on the outside of the water tank body (1), and the bracket (30) is fixedly connected to the water tank body (1); characterized in that, A first partition plate (28) arranged transversely is provided inside the water tank body (1), dividing the water tank body (1) into a water injection chamber and a control chamber (9); a second partition plate (29) arranged longitudinally is also provided at the top center of the first partition plate (28), dividing the water injection chamber into a cold water chamber (2) and a hot water chamber (3); A first water inlet pipe (4) is provided on the top of the cold water chamber (2), and the first water inlet pipe (4) is connected to an external cold water pipe; a second water inlet pipe (5) is provided on the top of the hot water chamber (3), and the second water inlet pipe (5) is connected to the cooling water of the cooling kiln; a regulating valve (10) is provided inside the control chamber (9), a first water inlet (11) and a second water inlet (12) are provided on the top of the regulating valve (10), and a water outlet (16) is provided on the bottom of the regulating valve (10), the first water inlet (11) is connected to the cold water chamber (2) through the first water outlet pipe (7), the second water inlet (12) is connected to the hot water chamber (3) through the second water outlet pipe (8), and the water outlet (16) is connected to the heating equipment through a conveying pipeline.

2. A cooling waste heat recovery system according to claim 1, characterized in that: A driving portion (15) is provided on one side of the regulating valve (10), a valve core (13) is provided inside the regulating valve (10), the valve core (13) is slidably connected to the regulating valve (10), and the driving portion (15) is connected to the valve core (13) via a linkage rod (14) for adjusting the opening of the first water inlet (11) and the second water inlet (12).

3. The cooling waste heat recovery system according to claim 1, characterized in that: A water distribution pipe (17) is provided at the water outlet (16), and the water distribution pipe (17) is a one-through-two structure, dividing the water outlet (16) into a heating pipe (18) and a cleaning pipe (19); A first water outlet valve (24) is provided at one end of the cleaning pipeline (19) close to the water distribution pipe (17); The heating pipeline (18) is connected to the heating equipment through a delivery pipeline, and a second water outlet valve (25) is provided at one end of the heating pipeline (18) close to the water distribution pipe (17).

4. The cooling waste heat recovery system according to claim 1, characterized in that: A water supply valve (21) and a flow meter (20) are sequentially provided on the first water inlet pipe (4) along the water flow direction; A filter (23) and a peristaltic pump (22) are sequentially arranged on the second water inlet pipe (5) along the water flow direction.

5. The cooling waste heat recovery system according to claim 1, characterized in that: A heat storage tank (31) is provided inside the hot water chamber (3), a spiral tube (32) is provided inside the heat storage tank (31), one end of the spiral tube (32) is connected to the second water inlet pipe (5), and the other end of the spiral tube (32) is connected to the second water outlet pipe (8); The heat storage tank (31) is filled with phase change material.

6. The cooling waste heat recovery system according to claim 1, characterized in that: An overflow port (6) is provided on the side wall of the cold water chamber (2); a liquid level pipe (27) is provided on the side wall of the cold water chamber (2), and the overflow port (6) is provided at a height flush with the top of the liquid level pipe (27).

7. The cooling waste heat recovery system according to claim 1, characterized in that: A manhole (33) is provided on the top of the water tank body (1), and a cover plate (34) is provided at the manhole (33). The cover plate (34) is hinged to the top of the water tank body (1).

8. The cooling waste heat recovery system according to claim 7, characterized in that: A ladder (26) is provided on one side of the water tank body (1) close to the manhole (33), and the top of the ladder (26) is fixedly connected to the top of the water tank body (1).

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