Coal mine bathing wastewater heat recovery hot water preparation system
By combining wastewater collection and heat exchange devices with external heating devices, the problem of insufficient heat recovery from coal mine bathing wastewater has been solved, achieving efficient utilization of waste heat and stable hot water supply, while reducing energy consumption and environmental pollution.
Patent Information
- Application Number
- CN202520139367.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Existing technologies have failed to effectively recover heat from coal mine bathing wastewater, leading to resource waste and environmental pollution. Furthermore, they are unable to meet bathing temperature requirements in winter, resulting in increased energy consumption.
By employing wastewater collection devices, heat exchange devices, and external heating devices, waste heat recovery and stable hot water supply are achieved through wastewater collection, heat transfer, and further heating.
It achieves efficient recovery and utilization of waste heat, reduces energy consumption, ensures the outlet water temperature of the bathing water system in winter, and reduces energy consumption and environmental pollution.
Smart Images
Figure CN223726904U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of heat recovery, in particular to a coal mine bath wastewater heat recovery hot water system. BACKGROUND
[0002] Due to the harsh working environment of the mining area, the miners have a large demand for bathing, and the coal mine bath wastewater usually contains a high temperature and heat, generally about 30℃ in winter. However, most of the current coal mines do not fully utilize the heat energy in the bath wastewater, and the wastewater is usually discharged to the outside, causing resource waste and environmental pollution. Therefore, how to effectively recover the heat in the coal mine bath wastewater has become an important issue in the field of energy saving and environmental protection. At present, some heat recovery technologies have been applied in the field of wastewater treatment, but in the aspect of heat recovery of coal mine bath wastewater, the technology application is relatively less, and the recovery efficiency and economy are insufficient. Therefore, it is urgent to develop a new type of coal mine bath wastewater heat recovery system which can fully recover heat and provide stable hot water supply.
[0003] Taking a medium-sized coal mine enterprise as an example, about 1000 workers enter the well every day for bathing in the normal production process. The traditional bath hot water preparation adopts coal-fired boiler, natural gas boiler or electric boiler. In recent years, the air compressor waste heat recovery for preparing bath hot water has been gradually popularized in coal mine enterprises, but due to the limitation of limited recovered heat, low winter water temperature and long heating time, the winter water temperature is low and cannot meet the temperature requirements of 40℃ for single pipe shower and 60℃ for double pipe shower in coal mine bath. In the actual operation process, the boiler heating system is switched to in winter. CONTENT OF THE INVENTION
[0004] In order to improve the water temperature of the winter bathing water system and reduce energy consumption, the present application provides a coal mine bath wastewater heat recovery hot water system.
[0005] The coal mine bath wastewater heat recovery hot water system provided by the present application adopts the following technical scheme:
[0006] A coal mine bath wastewater heat recovery hot water system, comprising:
[0007] A wastewater collection device for collecting wastewater generated in the coal mine bathing process;
[0008] A wastewater treatment mechanism arranged on the wastewater collection device for filtering solid impurities in the coal mine bath wastewater;
[0009] A heat exchange device for transferring heat in the wastewater to cold water;
[0010] A hot water storage tank in communication with the output end of the heat exchange device;
[0011] A power device is arranged to provide power for the flow of the medium;
[0012] An external heating device is arranged in the heat storage water tank to further heat the water in the heat storage water tank.
[0013] By using the above technical scheme, the wastewater collecting device can collect the wastewater generated during the coal mine bathing process, and the heat exchange device can transfer the heat in the wastewater to the cold water, thereby realizing the recycling of waste heat, improving the water temperature in the heat storage water tank, and reducing energy consumption. The tap water heated by the bathing wastewater still cannot reach the temperature for direct bathing. By arranging the external heating device, the water stored in the heat storage water tank can be further heated, thereby ensuring the water temperature of the winter bathing water system.
[0014] Optionally, the wastewater collecting device comprises a bathing drainage ditch, and the bottom surface of the bathing drainage ditch is arranged to be inclined.
[0015] By using the above technical scheme, the bathing drainage ditch is arranged in the bathroom to facilitate the collection of bathing wastewater, and the bottom surface of the drainage ditch is arranged to be inclined, which is conducive to the flow of the bathing drainage ditch along the bottom surface from the inclined upper end to the inclined lower end, ensures that the bathing wastewater in the bathing drainage ditch is always in a flowing state, and ensures the heat exchange efficiency. In addition, by opening the wastewater outlet, the drainage efficiency of the bathing drainage ditch is ensured, and the possibility of water accumulation in the bathroom floor is reduced.
[0016] Optionally, the wastewater treatment mechanism comprises a filter screen cover, and the filter screen cover is detachably installed on the top of the bathing drainage ditch.
[0017] By using the above technical scheme, the filter screen cover can filter out the hair and other solid impurities in the bathing wastewater to avoid the influence of impurities on the heat exchange effect. The filter screen cover is detachable and convenient to clean.
[0018] Optionally, the heat exchange device comprises a first heat exchange pipe, the first heat exchange pipe is arranged in the bathing drainage ditch, one end of the first heat exchange pipe is provided with a water inlet pipe, the other end of the first heat exchange pipe is provided with a water outlet pipe, and the water outlet pipe communicates with the inside of the heat storage water tank.
[0019] By using the above technical scheme, the water inlet pipe can be connected to the external tap water pipe, the first heat exchange pipe can transfer the heat in the bathing wastewater to the tap water in the pipe, and the tap water heated by the bathing wastewater is output to the heat storage water tank through the water outlet pipe for storage.
[0020] Optionally, a water temperature probe is arranged on the water outlet pipe, the detection end of the water temperature probe extends into the water outlet pipe, and a first valve is further arranged on the water outlet pipe, and the first valve is signal connected with the water temperature probe.
[0021] By adopting the technical scheme, the water temperature of the tap water in the water pipe can be detected by the water temperature probe, when the water temperature of the tap water in the water pipe is lower than the preset temperature, the first valve is closed, the first heat exchange pipe continues heat exchange, until the water temperature of the tap water in the water pipe reaches the preset temperature, the first valve is opened, the tap water preheated by the bathing waste water flows into the heat storage tank. Through the setting of the water temperature probe and the first valve, it can be ensured that the tap water can reach the set preheating temperature.
[0022] Optionally, the water outlet pipe is provided with a second valve, and the bathing drainage ditch is provided with a water level probe, and the second valve is signal connected with the water level probe.
[0023] By adopting the technical scheme, when the water level probe detects that there is no waste water flowing in the bathing drainage ditch, the second valve is cut off to stop heat exchange, so as to ensure the optimal use of energy.
[0024] Optionally, the external heat supplement device comprises a second heat exchange pipe, an input end of the second heat exchange pipe extends out of the heat storage tank and is in communication with an external heat source, and an output end of the second heat exchange pipe extends out of the heat storage tank and is arranged above the bathing drainage ditch.
[0025] By adopting the technical scheme, whenever the user uses water, the preheated tap water can be used as the water supplement source of the heat storage tank, the tap water in the heat storage tank can be further heated through the second heat exchange pipe, so as to ensure the water outlet temperature of the bathing water system in winter. In addition, the waste heat fluid flowing out of the output end of the second heat exchange pipe can fall into the bathing drainage ditch, so as to realize further recovery of waste heat, thereby being beneficial to further reducing energy consumption.
[0026] Optionally, a float ball valve is arranged at an end of the water outlet pipe away from the first heat exchange pipe, and the float ball valve is arranged in the heat storage tank.
[0027] By adopting the technical scheme, when the tap water stored in the heat storage tank reaches the set water level, the float ball valve is closed, so as to avoid the tap water in the heat storage tank from overflowing, and ensure the optimal use of energy.
[0028] In summary, the present application has at least one of the following beneficial technical effects:
[0029] 1. The waste water collecting device can collect the waste water generated in the coal mine bathing process, the heat exchange device can transfer the heat in the waste water to the cold water, so as to realize the recycling of waste heat, improve the water temperature in the heat storage tank, and be beneficial to reducing energy consumption. The tap water heated by the bathing waste water still cannot reach the temperature for direct bathing, and the setting of the external heat supplement device can further heat the water stored in the heat storage tank, so as to ensure the water outlet temperature of the bathing water system in winter.
[0030] 2. Through the setting of the filter screen cover, solid impurities such as hair in the bathing wastewater can be filtered out, so as to avoid the influence of impurities on the heat exchange effect. The filter screen cover is detachable, facilitating cleaning.
[0031] 3. Through the water temperature probe, the water temperature of the tap water in the water pipe can be detected. When the water temperature of the tap water in the water pipe is lower than the preset temperature, the first valve is closed, and the first heat exchange pipe continues to exchange heat until the water temperature of the tap water in the water pipe reaches the preset temperature, the first valve is opened, and the tap water preheated by the bathing wastewater flows into the heat storage tank. Through the setting of the water temperature probe and the first valve, it can be ensured that the tap water can reach the set preheating temperature. BRIEF DESCRIPTION OF DRAWINGS
[0032] Figure 1 is a whole structure schematic diagram of a coal mine bathing wastewater heat recovery hot water system according to an embodiment of the present application.
[0033] Mark for legend: 1, wastewater collecting device; 11, bathing drainage ditch; 12, wastewater outlet; 13, water level probe; 2, wastewater treatment mechanism; 21, filter screen cover; 3, heat exchange device; 31, first heat exchange pipe; 4, power device; 5, heat storage tank; 6, external heat supplement device; 61, second heat exchange pipe; 7, water inlet pipe; 8, water outlet pipe; 81, water temperature probe; 82, first valve; 83, second valve; 84, floating ball valve. DETAILED DESCRIPTION
[0034] The following will be described in detail in combination with the accompanying Figure 1 The present application will be further described in detail.
[0035] Embodiment:
[0036] The embodiment of the present application discloses a coal mine bathing wastewater heat recovery hot water system. Referring to Figure 1 A coal mine bathing wastewater heat recovery hot water system, comprising a wastewater collecting device 1, a wastewater treatment mechanism 2, a heat exchange device 3, a power device 4 and a heat storage tank 5, wherein the wastewater collecting device 1 is used to collect the wastewater generated in the coal mine bathing process; the wastewater treatment mechanism 2 is installed at the top of the wastewater collecting device 1 and is used to filter the solid impurities in the coal mine bathing wastewater; the heat exchange device 3, the power device 4 and the heat storage tank 5 are sequentially communicated, the heat exchange device 3 is used to transfer the heat in the wastewater to cold water, realizing the preheating of tap water, the power device 4 is used to provide power for the flow of medium, and the heat storage tank 5 is used to store the preheated tap water.
[0037] When the hot water system is used, the wastewater collecting device 1 can collect the wastewater generated in the coal mine bathing process, and the heat exchange device 3 can transfer the heat in the wastewater to cold water, thereby realizing the recycling of waste heat and improving the water temperature in the heat storage tank 5, which is conducive to reducing energy consumption.
[0038] With reference to Figure 1 The heat storage tank 5 is further provided with an external heating device 6 for further heating the water in the heat storage tank 5. Since the tap water heated by the bathing waste water cannot reach the temperature for direct bathing, the external heating device 6 can further heat the water stored in the heat storage tank 5, thereby ensuring the water temperature of the bathing water system in winter.
[0039] With reference to Figure 1 The waste water collecting device 1 comprises a bathing drainage ditch 11 arranged on the bathroom floor. The bottom surface of the bathing drainage ditch 11 is arranged to be inclined. The bathing drainage ditch 11 is provided with a waste water outlet 12 near one end of the inclined lower end of the bottom surface. By arranging the bathing drainage ditch 11 in the bathroom, the bathing waste water can be collected. The bottom surface of the drainage ditch is arranged to be inclined, which is beneficial to the flow of the bathing waste water in the bathing drainage ditch 11 from the inclined upper end to the inclined lower end along the bottom surface, thereby ensuring the flow state of the bathing waste water in the bathing drainage ditch 11 and the heat exchange efficiency. In addition, by arranging the waste water outlet 12, the drainage efficiency of the bathing drainage ditch 11 is ensured, and the possibility of water accumulation on the bathroom floor is reduced.
[0040] With reference to Figure 1 The waste water treatment mechanism 2 comprises a filter cover 21 which is detachably arranged on the step at the top opening of the bathing drainage ditch 11. In this way, the filter cover 21 can filter out the solid impurities such as hair in the bathing waste water, so as to avoid the influence of the impurities on the heat exchange effect. The filter cover 21 is detachable, which is convenient for cleaning.
[0041] With reference to Figure 1 The heat exchange device 3 comprises a first heat exchange pipe 31 which is arranged in the bathing drainage ditch 11. One end of the first heat exchange pipe 31 is connected with the water inlet pipe 7, and the other end is connected with the water outlet pipe 8 which is connected with the inside of the heat storage tank 5. In this embodiment, the first heat exchange pipe 31 is a stainless steel straight-line pipe. In this way, the water inlet pipe 7 can be connected with the external tap water pipe. The first heat exchange pipe 31 can transfer the heat in the bathing waste water to the tap water in the pipe. The tap water heated by the bathing waste water is output to the heat storage tank 5 through the water outlet pipe 8 for storage.
[0042] With reference to Figure 1The power device 4 is installed on the outlet pipe 8 and is used to provide power for the flow of tap water. In this embodiment, the power device 4 is a pipeline pump. The water temperature probe 81 is installed on the outlet pipe 8, the detection end of the water temperature probe 81 extends into the outlet pipe 8, and the first valve 82 is installed on the outlet pipe 8 and is in signal connection with the water temperature probe 81. In this embodiment, the first valve 82 is an electromagnetic valve. The water temperature probe 81 can detect the water temperature of the tap water in the outlet pipe 8, when the water temperature of the tap water in the outlet pipe 8 is lower than the preset temperature, the first valve 82 is closed, the first heat exchange pipe 31 continues to exchange heat, and when the water temperature of the tap water in the outlet pipe 8 reaches the preset temperature, the first valve 82 is opened, and the tap water preheated by the bathing wastewater flows into the heat storage tank 5. Through the setting of the water temperature probe 81 and the first valve 82, it can be ensured that the tap water can reach the set preheating temperature.
[0043] With reference to Figure 1 The second valve 83 is installed on the outlet pipe 8, and the water level probe 13 is installed in the bathing drainage ditch 11, and the second valve 83 is in signal connection with the water level probe 13. In this embodiment, the second valve 83 is an electromagnetic valve. When the water level probe 13 detects that there is no wastewater flowing in the bathing drainage ditch 11, the second valve 83 is cut off to stop heat exchange, so as to ensure the optimal use of energy.
[0044] With reference to Figure 1 The floating ball valve 84 is installed on the end of the outlet pipe 8 away from the first heat exchange pipe 31, and the floating ball valve 84 is arranged in the heat storage tank 5. When the tap water stored in the heat storage tank 5 reaches the set water level, the floating ball valve 84 is closed to prevent the tap water in the heat storage tank 5 from overflowing.
[0045] With reference to Figure 1 The external heat supplement device 6 includes the second heat exchange pipe 61, the input end of the second heat exchange pipe 61 extends out of the heat storage tank 5 and is in communication with the external heat source, and the output end of the second heat exchange pipe 61 extends out of the heat storage tank 5 and is arranged above the bathing drainage ditch 11. In this embodiment, the external heat source is a waste heat fluid with a temperature greater than 50℃. Whenever the user uses water, the preheated tap water can be used as the water supplement source of the heat storage tank 5, and the tap water in the heat storage tank 5 can be further heated through the second heat exchange pipe 61 to ensure the outlet water temperature of the bathing water system in winter. In addition, the waste heat fluid flowing out of the output end of the second heat exchange pipe 61 can fall into the bathing drainage ditch 11, realizing further recovery of waste heat, thereby being beneficial to further reducing energy consumption.
[0046] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application shall be covered within the protection scope of the present application.
Claims
1. A coal mine bath wastewater heat recovery hot water system, characterized in that, The utility model relates to a coal mine bath wastewater treatment device, which comprises the following parts: a wastewater collecting device (1) for collecting wastewater generated in a coal mine bath process; a wastewater treatment mechanism (2) arranged on the wastewater collecting device (1) and used for filtering solid sundries in the coal mine bath wastewater; a heat exchange device (3) for transferring heat in the wastewater to cold water; a hot water storage tank (5) in communication with an output end of the heat exchange device (3); a power device (4) for providing power for the flow of medium; an external heat supplement device (6) arranged in the hot water storage tank (5) and used for further heating water in the hot water storage tank (5).
2. The coal mine washing bath wastewater heat recovery hot water system according to claim 1, characterized in that: The wastewater collecting device (1) comprises a bath drainage ditch (11), the bottom surface of the bath drainage ditch (11) is arranged to be inclined, and the bath drainage ditch (11) is provided with a wastewater outlet (12) at one end close to the inclined lower end of the bottom surface.
3. The coal mine washing bath wastewater heat recovery hot water system according to claim 2, characterized in that: The wastewater treatment mechanism (2) comprises a filter screen cover (21) which is detachably arranged on the top of the bath drainage ditch (11).
4. The coal mine washing bath wastewater heat recovery hot water system according to claim 2, characterized in that: The heat exchange device (3) comprises a first heat exchange pipe (31) arranged in the bath drainage ditch (11), one end of the first heat exchange pipe (31) is provided with a water inlet pipe (7), the other end is provided with a water outlet pipe (8), and the water outlet pipe (8) is in communication with the inside of the hot water storage tank (5).
5. The coal mine washing bath wastewater heat recovery hot water system according to claim 4, characterized in that: The water outlet pipe (8) is provided with a water temperature probe (81), the detection end of the water temperature probe (81) extends into the water outlet pipe (8), and the water outlet pipe (8) is further provided with a first valve (82) which is in signal connection with the water temperature probe (81).
6. The coal mine washing bath wastewater heat recovery hot water system according to claim 4, characterized in that: The water outlet pipe (8) is provided with a second valve (83), and the bath drainage ditch (11) is provided with a water level probe (13), and the second valve (83) is in signal connection with the water level probe (13).
7. The coal mine washing bath wastewater heat recovery hot water system according to claim 2, characterized in that: The external heat supplement device (6) comprises a second heat exchange pipe (61), the input end of the second heat exchange pipe (61) extends out of the hot water storage tank (5) and is in communication with an external heat source, the output end of the second heat exchange pipe (61) extends out of the hot water storage tank (5) and is arranged above the bath drainage ditch (11).
8. The coal mine washing bath wastewater heat recovery hot water system according to claim 4, characterized in that: The water outlet pipe (8) is provided with a float valve (84) at the end away from the first heat exchange pipe (31), and the float valve (84) is arranged in the hot water storage tank (5).