Bathing pool waste water waste heat energy-saving recovery system

Abstract

The utility model relates to the technical field of energy utilization, and discloses a bathing pool waste water waste heat energy-saving recovery system which comprises a sewage tank, a heat pump unit and a hot water tank. The sewage tank is communicated with a sewage discharge pipe of the bathing pool, a heat exchanger is arranged in the sewage tank, an outlet and an inlet of the heat exchanger are respectively communicated with a first circulating pipe and a second circulating pipe, and the first circulating pipe and the second circulating pipe are respectively communicated with a heat exchange port of the heat pump unit; a hot water outlet of the heat pump unit is communicated with the hot water tank through a hot water pipe; the heat pump unit can operate with a small amount of electric power by utilizing waste heat of sewage, so that the working time and energy consumption of the heat pump unit are saved, the power consumption can be effectively reduced, the operation cost of an enterprise is reduced, and the heat pump unit is energy-saving and environment-friendly. The method has good economical efficiency, realizes recycling of resources, and has the beneficial effects of energy conservation and emission reduction.

Description

Technical Field

[0001] The utility model relates to the technical field of energy utilization, in particular to an energy-saving recovery system for waste heat of bathing pool waste water. Background Art

[0002] As people's living standards gradually improve, there are more and more bathing places in cities, and people's investment in bathing consumption is gradually increasing. The energy loss of coal, electricity or gas consumed by bathing places is increasing year by year.

[0003] For conventional large-scale centralized bathing facilities, due to the large flow of hot water and concentrated water use, high electricity, fuel or equipment costs have to be spent to meet the water consumption needs. In addition, the hot water is almost always discarded after use. The large amount of wastewater discharged is calculated at a temperature of 30-40 degrees per ton of wastewater, which wastes about 4000 kcal of coal per kilogram, and about 5 kWh of electricity is wasted for each ton of 30-40 degree wastewater. The heat contained in the sewage that is higher than the ambient temperature is wasted, and waste heat recovery has great economic value.

[0004] Therefore, there is an urgent need for a bathing pool wastewater waste heat energy-saving recovery system. Utility Model Content

[0005] The utility model aims to provide a bathing pool waste water waste heat energy-saving recovery system, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the utility model provides the following solutions: The utility model provides a bath wastewater waste heat energy-saving recovery system, including a sewage tank, a heat pump unit and a hot water tank;

[0007] The sewage tank is connected to the sewage discharge pipe of the bath, a heat exchanger is arranged in the sewage tank, the outlet and the inlet of the heat exchanger are respectively connected to the first circulation pipe and the second circulation pipe, the first circulation pipe and the second circulation pipe are respectively connected to the heat exchange port of the heat pump unit;

[0008] The hot water outlet of the heat pump unit is connected to the hot water tank through a hot water pipe;

[0009] A hot air circulation cavity is arranged in the sewage tank, and the hot air circulation cavity is connected with a heat preservation pipe, and the heat preservation pipe covers the first circulation pipe.

[0010] Optionally, the hot air circulation cavity is opened in the inner wall of the sewage tank, and the inner top wall of the sewage tank is provided with a plurality of air inlets connected with the hot air circulation cavity.

[0011] Optionally, a plurality of exhaust ports are provided on a side wall of one end of the insulation pipe away from the sewage tank.

[0012] Optionally, a sewage inlet pipe is provided on the top wall of the sewage tank, and the sewage inlet pipe is connected to the sewage discharge pipe of the bathtub through a hair filter.

[0013] Optionally, the sewage inlet pipe is connected to a diffusion nozzle, and the diffusion nozzle faces the heat exchanger.

[0014] Optionally, the heat exchanger is a serpentine coil.

[0015] Optionally, a sewage pipe with a valve is provided on the sewage tank.

[0016] Optionally, the water outlet of the hot water tank is connected to a water outlet pipe with a pump, and the water outlet pipe is respectively connected to the bathing pool and the shower pipe of the bathing pool through a three-way joint and a pipeline.

[0017] The utility model discloses the following technical effects: by connecting a sewage tank with a sewage discharge pipe of a bath, sewage generated by the bath is collected, and heat is exchanged in a heat exchanger in the sewage tank, and at the same time, the hot air generated by the sewage is utilized through the hot air circulation cavity and the insulation pipe in the sewage tank, so that the hot air always wraps the first circulation pipe, so that the heat source in the first circulation pipe maintains an optimal heat exchange efficiency, so that the waste heat of the sewage flows into the heat pump unit through the first circulation pipe, exchanges heat with the heat pump unit, and hot water is generated by the heat pump unit and discharged to the hot water tank through the hot water pipe, so that the waste heat of the sewage is utilized to enable the heat pump unit to operate with a small amount of electricity, saving the working time and energy consumption of the heat pump unit, and can effectively reduce the consumption of electricity, reduce the operating costs of the enterprise, have good economy, realize the recycling of resources, and achieve the beneficial effects of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a cross-sectional view of the sewage tank of the utility model.

[0021] In the figure: 1. sewage tank; 2. heat pump unit; 3. hot water tank; 4. sewage pipe of the bath; 5. heat exchanger; 6. first circulation pipe; 7. second circulation pipe; 8. hot water pipe; 9. hot air circulation cavity; 10. insulation pipe; 11. air inlet; 12. exhaust port; 13. sewage inlet pipe; 14. hair filter; 15. diffusion nozzle; 16. sewage pipe; 17. water outlet pipe; 18. bathing pool of the bath; 19. shower pipe of the bath. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Reference Figure 1-Figure 2 , the utility model provides a bath wastewater waste heat energy-saving recovery system, including a sewage tank 1, a heat pump unit 2 and a hot water tank 3;

[0025] The sewage tank 1 is connected to the sewage discharge pipe 4 of the bath, and a heat exchanger 5 is arranged in the sewage tank 1. The outlet and the inlet of the heat exchanger 5 are respectively connected to the first circulation pipe 6 and the second circulation pipe 7. The first circulation pipe 6 and the second circulation pipe 7 are respectively connected to the heat exchange port of the heat pump unit 2;

[0026] The hot water outlet of the heat pump unit 2 is connected to the hot water tank 3 through the hot water pipe 8;

[0027] A hot air circulation chamber 9 is provided in the sewage tank 1 , and the hot air circulation chamber 9 is connected to a heat preservation pipe 10 , and the heat preservation pipe 10 covers the first circulation pipe 6 .

[0028] By connecting the sewage tank 1 with the sewage discharge pipe 4 of the bath, the sewage generated by the bath is collected and heat exchanged through the heat exchanger 5 in the sewage tank 1. At the same time, the hot air generated by the sewage is utilized through the hot air circulation cavity 9 and the insulation pipe 10 in the sewage tank 1, so that the hot air always wraps the first circulation pipe 6, so that the heat source in the first circulation pipe 6 maintains the best heat exchange efficiency, so that the waste heat of the sewage flows into the heat pump unit 2 through the first circulation pipe 6, and exchanges heat with the heat pump unit 2. The heat pump unit 2 generates hot water and discharges it to the hot water tank 3 through the hot water pipe 8, so that the waste heat of the sewage is utilized to enable the heat pump unit 2 to operate with a small amount of electricity, saving the working time and energy consumption of the heat pump unit 2, and can effectively reduce the consumption of electricity, reduce the operating costs of the enterprise, have good economy, realize the recycling of resources, and achieve the beneficial effects of energy conservation and emission reduction.

[0029] According to a further optimized solution, a hot air circulation cavity 9 is provided in the inner wall of the sewage tank 1 , and a plurality of air inlets 11 communicating with the hot air circulation cavity 9 are provided on the inner top wall of the sewage tank 1 .

[0030] By opening the air inlet 11 on the top wall of the sewage tank 1 and utilizing the principle of hot air rising, the hot air can flow into the hot air circulation chamber 9. In addition, the sewage is sprayed vertically downward and is staggered with the air inlet 11, which can effectively reduce the phenomenon of water accumulation in the hot air circulation chamber 9.

[0031] The hot air circulation cavity 9 is located in the inner wall of the sewage tank 1, which can keep the sewage tank 1 warm, reduce the loss rate of waste heat of sewage, and improve the utilization rate of waste heat of sewage.

[0032] According to a further optimized solution, a plurality of exhaust ports 12 are provided on the side wall of the end of the insulation pipe 10 away from the sewage tank 1 .

[0033] The hot air in the hot air flow chamber 9 can be discharged by setting an exhaust port 12, and a valve (not shown in the figure) is set at the exhaust port 12.

[0034] According to a further optimized solution, a sewage inlet pipe 13 is provided on the top wall of the sewage tank 1 , and the sewage inlet pipe 13 is connected to the sewage discharge pipe 4 of the bathtub through a hair filter 14 .

[0035] By providing the hair filter 14, impurities in the sewage generated by the bathtub can be filtered.

[0036] According to a further optimized solution, the sewage inlet pipe 13 is connected to a diffusion nozzle 15 , and the diffusion nozzle 15 faces the heat exchanger 5 .

[0037] By providing a diffusion nozzle 15, and the diffusion nozzle 15 is located above the heat exchanger 5, the spraying area of ​​the sewage can be diffused, thereby improving the contact efficiency between the sewage and the heat exchanger 5, thereby improving the heat exchange efficiency, reducing the waste degree of natural volatilization of waste heat from the sewage, and improving the utilization efficiency of the waste heat from the sewage.

[0038] According to a further optimization scheme, the heat exchanger 5 is a serpentine coil. The serpentine coil-shaped heat exchanger 5 can increase the contact area with the sewage and improve the heat exchange efficiency.

[0039] To further optimize the solution, a sewage pipe 16 with a valve is provided on the sewage tank 1. After the waste heat of the sewage is fully utilized, the sewage is discharged from the sewage tank 1 through the sewage pipe 16 by controlling the valve.

[0040] To further optimize the solution, the water outlet of the hot water tank 3 is connected to a water outlet pipe 17 with a pump, and the water outlet pipe 17 is respectively connected to the bathing pool 18 and the shower pipe 19 of the bathing pool through a three-way joint and a pipeline. The hot water generated after the waste heat is utilized can enter the bathing pool 18 and the shower pipe 19 of the bathing pool through the water outlet pipe 17 and the pipeline for bathing use.

[0041] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A bath wastewater waste heat energy-saving recovery system, characterized in that: It comprises a sewage tank (1), a heat pump unit (2) and a hot water tank (3); The sewage tank (1) is connected to the sewage discharge pipe (4) of the bathtub. A heat exchanger (5) is arranged in the sewage tank (1). The outlet and the inlet of the heat exchanger (5) are respectively connected to a first circulation pipe (6) and a second circulation pipe (7). The first circulation pipe (6) and the second circulation pipe (7) are respectively connected to the heat exchange port of the heat pump unit (2); The hot water outlet of the heat pump unit (2) is connected to the hot water tank (3) via a hot water pipe (8); A hot air circulation cavity (9) is provided in the sewage tank (1), the hot air circulation cavity (9) is connected to a heat preservation pipe (10), and the heat preservation pipe (10) covers the first circulation pipe (6).

2. The bathing pool waste water waste heat energy-saving recovery system according to claim 1, characterized in that: The hot air circulation cavity (9) is provided in the inner side wall of the sewage tank (1), and the inner top wall of the sewage tank (1) is provided with a plurality of air inlets (11) which are in communication with the hot air circulation cavity (9).

3. The bathing pool waste water waste heat energy-saving recovery system according to claim 1, characterized in that: A plurality of exhaust ports (12) are provided on a side wall of one end of the heat preservation pipe (10) away from the sewage tank (1).

4. The bathing pool waste water waste heat energy-saving recovery system according to claim 1, characterized in that: The top wall of the sewage tank (1) is provided with a sewage inlet pipe (13), and the sewage inlet pipe (13) is connected to the sewage discharge pipe (4) of the bathtub through a hair filter (14).

5. A bathing pool waste water waste heat energy-saving recovery system according to claim 4, characterized in that: The sewage inlet pipe (13) is connected to a diffusion nozzle (15), and the diffusion nozzle (15) faces the heat exchanger (5).

6. The bathing pool waste water waste heat energy-saving recovery system according to claim 1, characterized in that: The heat exchanger (5) is a serpentine coil.

7. The bathing pool waste water waste heat energy-saving recovery system according to claim 1, characterized in that: The sewage tank (1) is provided with a sewage discharge pipe (16) with a valve.

8. The bathing pool waste water waste heat energy-saving recovery system according to claim 1, characterized in that: The water outlet of the hot water tank (3) is connected to a water outlet pipe (17) with a pump, and the water outlet pipe (17) is respectively connected to a bathing pool (18) and a shower pipe (19) of the bathing pool through a three-way joint and a pipeline.

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