Cooling hot water recycling system for white spirit production

Abstract

The utility model relates to a white spirit production cooling hot water recycling system which comprises a hot water pool, a warm water tank, a cold water tank, a hot water using end, a cold water using end and an ozone oxygen protection device (or an ozone multi-stage fusion device), the hot water pool is connected with a self-priming pump, and the self-priming pump is connected with the hot water using end; the warm water tank is connected with the cold water tank through a cooling pipe, and the cold water tank is connected with a clean water pump which is connected with a cold water end. The warm water tank, the cold water tank, the hot water tank and the first pipeline are all connected with an ozone oxygen protection device (or an ozone multi-stage fusion device); the hot water pool, the warm water tank and the cold water tank are each internally provided with a liquid level detection element, and the second valve, the fifth valve, the liquid level detection elements, the temperature sensors, the negative pressure sensors and the pressure sensors are all connected with the controller. According to the utility model, the water quality can be ensured not to deteriorate, the water body is prevented from blackening and stinking, the pump, the valve and the like can automatically operate through the controller, and the water temperature of the hot water using end can be automatically adjusted.

Description

Technical Field

[0001] The utility model belongs to the technical field of water treatment, in particular to a system for recycling cooling hot water in liquor production. Background Art

[0002] In the process of liquor production, a large amount of cooling water is needed to cool the materials. After the cooling water exchanges heat with the high-temperature materials, it becomes hot water with a higher temperature. This hot water not only stores a large amount of thermal energy, but also reduces its hardness by about 30%, making the water quality better and worth recycling. At present, these hot water are usually treated in the following ways:

[0003] 1. Use multiple open water pools for step-by-step cooling. When this method is used, not only is the cooling effect poor, but external pollutants (including microorganisms) are easily introduced into the water, and anaerobic microorganisms grow and multiply in the water, producing sludge and smelly gases, causing the water to stink and turn black.

[0004] 2. First air cool, then use ultraviolet sterilization, and then recycle. When this method is used, cooling down all the hot water requires a lot of new energy or facilities, which is costly, and the ultraviolet lamp is easy to scale and damage, which cannot achieve the sterilization effect, and it is still inevitable that the water will stink or even turn black.

[0005] 3. Air-cool first, then sterilize and filter with chemical reagents, or mix with cold water to cool and recycle. Commonly used chemical reagents include hypochlorous acid and its salts, but their recycling in the food industry is very limited. Wastewater with too high chloride ion content is discharged to the main outlet, which is likely to cause abnormal fluctuations in online monitoring data and even the risk of exceeding the standard. It can also be mixed with cold water for recycling, but the water temperature is still high, and the quality of the wine is not as good as tap water or groundwater with lower water temperature. Successful cases are recycling as boiler water and koji water, but the disadvantages are: large investment (air cooling, ultrafiltration, housing), high operating costs (electricity, chemicals, replacement of ultrafiltration membranes, labor), and large land occupation.

[0006] 4. Directly discharge to the sewage pipe network, enter the sewage treatment system, and turn into sewage discharge after natural cooling through the sewage treatment system. This discharge method is currently the disposal method mostly adopted by the liquor industry (especially small and medium-sized enterprises). Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a system for recycling cooling hot water in liquor production, which can ensure the water quality does not deteriorate and prevent the water from becoming black and smelly; and at the same time has the functions of automatically controlling water temperature, maintaining pressure and pumping water.

[0008] To solve the above problems, the technical solution adopted by the utility model is: a liquor production cooling hot water recovery and utilization system, including a hot water pool (or hot water source), a warm water tank (or warm water source), a cold water tank (or cold water source), a hot water water end, a cold water water end and an ozone oxygen protection device (or an ozone multi-stage fusion device), wherein the ozone oxygen protection device (or an ozone multi-stage fusion device) includes a controller, an ozone supply mechanism, a negative pressure sensor, an air dissolving pump, a jet fusion device, a self-priming pump, a temperature sensor and a pressure sensor connected in sequence. The hot water tank is connected to a self-priming pump through a first pipeline, and the self-priming pump is connected to a hot water water end through a second pipeline, and a temperature sensor and a pressure sensor are arranged on the second pipeline; the second pipeline is connected to the top of a warm water tank through a third pipeline, and the bottom of the warm water tank is connected to the top of a cold water tank through a cooling pipe, and the cold water tank is connected to a clean water pump through a fourth pipeline, and the clean water pump is connected to a cold water water end; the cold water tank is connected to the first pipeline through a fifth pipeline, and a second valve is arranged on the fifth pipeline; the warm water tank, the cold water tank, the hot water tank and the first pipeline are all connected to an ozone oxygen protection device; liquid level detection elements are arranged in the hot water tank, the warm water tank and the cold water tank, and a fifth valve is arranged on the third pipeline, and the second valve, the fifth valve, the liquid level detection element, the temperature sensor and the pressure sensor are all connected to a controller.

[0009] Furthermore, the ozone oxygen protection device includes an ozone supply mechanism, an air dissolving pump and a jet fusion device connected in sequence, the air dissolving pump is connected to the cold water tank through a sixth pipeline, and a first valve is arranged on the sixth pipeline; the jet fusion device is arranged on the fifth pipeline, and the jet fusion device is connected to the warm water tank through a seventh pipeline, and a fourth valve is arranged on the seventh pipeline, a third valve is arranged on the fifth pipeline between the jet fusion device and the cold water tank, and the second valve is arranged on the fifth pipeline between the jet fusion device and the first pipeline; the first valve, the third valve, the fourth valve, the air dissolving pump and the ozone supply mechanism are all connected to the controller.

[0010] Furthermore, distributors are provided in the warm water tank and the cold water tank, and the fifth pipe and the seventh pipe are respectively connected to the distributors.

[0011] Furthermore, the air dissolving pump is connected to the cold water end through an eighth pipeline, and a ninth valve is arranged on the eighth pipeline.

[0012] Furthermore, a negative pressure sensor is provided between the first valve and the air dissolving pump to control the opening size of the first valve 24 .

[0013] Furthermore, the hot water end includes boiler water equipment, bathing water equipment and domestic water equipment.

[0014] Furthermore, the cold water use end includes a circulating water pool, a raw water pool and other water use pools, and the circulating water pool, the raw water pool and other water use pools are connected to the clean water pump through the sixth valve, the seventh valve and the eighth valve respectively.

[0015] Furthermore, the controller is a PLC.

[0016] The utility model has the following beneficial effects: the hot water pool is used to store hot water for cooling liquor production, and it is preferably fully enclosed to collect it to prevent the invasion of pollutants. Since the water temperature in the hot water pool is relatively high, it is difficult for microorganisms to grow, and sterilization treatment is not required for daily operation. When the water level in the hot water pool is high, the fifth valve and the self-priming pump are opened to transport the hot water in the hot water pool to the warm water tank, and the hot water is naturally cooled in the warm water tank, and the temperature gradually decreases. The warm water in the warm water tank automatically overflows into the cold water tank through the cooling pipe, and the temperature in the cold water tank is further reduced. The warm water tank and the cold water tank are cooled by natural cooling. When the hot water water end is discharged, the self-priming pump is automatically started to transport the hot water in the hot water pool to the hot water water end, and at the same time, the cold water in the warm water or cold water pool is transported to the hot water water end, and the warm water or cold water and hot water are mixed in the first pipeline. By controlling the flow of warm water or cold water and hot water, the outlet water temperature of the hot water water end can be controlled. When the liquid level in the cold water tank is high, the clean water pump is used to transport the cold water in the cold water tank to the cold water end. The ozone protection device (or ozone multi-stage fusion device) can be used to sterilize and increase the dissolved oxygen content in the water regularly, thereby inhibiting the reproduction of anaerobic microorganisms, preventing the water from becoming black and smelly, and ensuring the stability of hot water quality. In addition, the warm water tank and the cold water tank adopt a closed box to prevent external pollutants from entering the warm water and cold water. The pump, valve, etc. of the utility model can be automatically controlled by the controller to realize the automatic adjustment of the water temperature at the hot water end. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the utility model. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] The utility model of the white wine production cooling hot water recycling system, such as Figure 1As shown, it includes a hot water pool 1, a warm water tank 2, a cold water tank 3, a hot water water end 4, a cold water water end 5 and an ozone oxygen protection device (or an ozone multi-stage fusion device). The hot water pool 1 is connected to a self-priming pump 7 through a first pipe 6, and the self-priming pump 7 is connected to the hot water water end 4 through a second pipe 8. A temperature sensor 9 and a pressure sensor 10 are arranged on the second pipe 8; the second pipe 8 is connected to the top of the warm water tank 2 through a third pipe 11, and the bottom of the warm water tank 2 is connected to the top of the cold water tank 3 through a cooling pipe 12. The cold water tank 3 is connected to a clean water pump 14 through a fourth pipe 13, and the clean water pump 14 is connected to the cold water water end 5; the cold water tank 3 is connected to the first pipe 6 through a fifth pipe 17, and a second valve 18 is arranged on the fifth pipe 17; the warm water tank 2, the cold water tank 3 and the first pipe 6 are all connected to the ozone oxygen protection device; a liquid level detection element 15 is arranged in the hot water pool 1, the warm water tank 2 and the cold water tank 3, and a fifth valve 16 is arranged on the third pipe 11. The ozone protection device (or ozone multi-stage fusion device) includes a controller 20, an ozone supply mechanism 19, a controller 20, an ozone supply mechanism 19, an air dissolving pump 21 and a jet fusion device 22 connected in sequence. The air dissolving pump 21 is connected to the cold water tank 3 through the sixth pipeline 23, and the sixth pipeline 23 is provided with a first valve 24; the jet fusion device 22 is arranged on the fifth pipeline 17, and the jet fusion device 22 is connected to the warm water tank 2 through the seventh pipeline 25, and the seventh pipeline 25 is provided with a fourth valve 26, and the fifth pipeline 17 between the jet fusion device 22 and the cold water tank 3 is provided with a third valve 27, and the second valve 18 is arranged on the fifth pipeline 17 between the jet fusion device 22 and the first pipeline 6. A negative pressure sensor is arranged between the first valve 24 and the air dissolving pump 21, which is used to control the opening size of the first valve 24. The second valve 18, the fifth valve 16, the liquid level detection element 15, the temperature sensor 9 and the pressure sensor 10 are all connected to the controller 20.

[0020] The hot water tank 1 is used to store hot water. A metal tank body or a concrete tank body can be used. The installation position is to facilitate the natural recovery of hot water without energy consumption. The cooling water in the liquor production process is discharged into the hot water tank 1. Since the water temperature in the hot water tank 1 is high, it is difficult for microorganisms at room temperature to reproduce and no sterilization is required. A cover is set on the top of the hot water tank 1 to prevent external dust and other pollutants from entering the hot water. The warm water tank 2 and the cold water tank 3 are designed as a rectangular parallelepiped with an aspect ratio greater than 1.2-3.0:1. They are installed on the ground and are used to cool the hot water by natural heat dissipation of the air, which can reduce energy consumption. The warm water tank 2, the cooling pipe 12 and the cold water tank 3 are specifically cooled by natural heat dissipation, which can reduce energy consumption. The warm water tank 2 and the cold water tank 3 use a closed box to prevent external microorganisms from entering the water. Specifically, a metal box can be used, which has a high thermal conductivity and is conducive to faster heat dissipation. The water temperature in the warm water tank 2 is lower than the water temperature in the hot water pool 1, and the water temperature in the cold water tank 3 is lower than the water temperature in the warm water tank 2. Therefore, when the hot water in the hot water pool 1 enters the warm water tank 2, the temperature of the hot water will gradually decrease from top to bottom and from the inlet to the outlet. When the warm water in the warm water tank 2 enters the cold water tank 3, the temperature of the warm water will also gradually decrease from top to bottom and from the inlet to the outlet.

[0021] The volume of the warm water tank 2 and the cold water tank 3 is calculated based on the residence time of water in the water tank and the hot water output, and can store hot water for more than 1.0 day. Specifically, the volume of the warm water tank 2 is suitable for storing hot water for 1.0-2.0 days, and the volume of the cold water tank 3 is suitable for storing water for more than 2.0 days. Through the gradual cooling of the warm water tank 2, the cooling pipe 12 and the cold water tank 3, the water temperature at the end of the cold water tank 3 reaches the lowest.

[0022] The hot water end 4 can be specifically a boiler water device, a bathing water device and a domestic water device. The domestic water device can be a cleaning device such as laundry and dishwashing. When the hot water end 4 is a boiler, the outlet water temperature is controlled below 45°. When the hot water end 4 is a bathing water device and a domestic water device, the outlet water temperature is controlled between 39 and 41 degrees. The cold water end 5 can be specifically a circulating water pool, a raw water pool and other water pools. The circulating water pool, the raw water pool and other water pools are connected to the clean water pump 14 through the sixth valve 31, the seventh valve 32 and the eighth valve 33 respectively. The circulating water pool is a water reservoir that uses cold water as cooling water for liquor production and can be recycled. The raw water pool is a pool that stores fresh water inside and provides cooling water to the liquor production line. The circulating water pool is a pool that directly uses cold water for liquor production. The raw water pool is a pool that mixes cold water with fresh cold water (such as groundwater, etc.) before using it for liquor production. Other water pools are water supply pools used for other purposes, such as raw material cleaning, equipment cleaning, etc.

[0023] The ozone protection device (or ozone multi-stage fusion device) is used to regularly supply an appropriate amount of ozone to the warm water tank 2 and the cold water tank 3. Ozone can sterilize and reduce the number of microorganisms in the water. At the same time, ozone decomposes to produce oxygen, increase the oxygen content in the water, and inhibit the growth and reproduction of anaerobic microorganisms, thereby preventing the water from becoming black and smelly and ensuring stable water quality. During the leisure time of hot water recycling, such as late at night, the ozone protection device (or ozone multi-stage fusion device) is automatically turned on to sterilize the water in the warm water tank 2 and the cold water tank 3 and replenish dissolved oxygen to ensure stable water quality.

[0024] The self-priming pump 7 is used to extract the hot water in the hot water pool 1. First, when the hot water end 4 is discharging water, the mixed water of hot water and cold water can be transported to the hot water end 4. Second, when the liquid level in the hot water pool 1 is high, the hot water in the hot water pool 1 is transported to the warm water tank 2 for storage and cooling. When the liquid level in the warm water tank 2 is high, the warm water automatically overflows into the cold water tank 3 through the cooling pipe 12. When the liquid level in the cold water tank 3 is high, the clean water pump 14 is started to transport the cold water in the cold water tank 3 to the cold water end 5 until the liquid level in the cold water tank 3 is at a suitable value. The liquid levels in the hot water pool 1, the warm water tank 2 and the cold water tank 3 are detected by the liquid level detection element 15. The liquid level detection element 15 can adopt various existing liquid level meters and transmit the detection results to the controller 20.

[0025] The temperature sensor 9 and the pressure sensor 10 are used to detect the temperature and pressure in the second pipe 8, and transmit the detection results to the controller 20. When the hot water end 4 discharges water, the pressure in the second pipe 8 decreases. At this time, the controller 20 controls the self-priming pump 7 to start and opens the second valve 18 at the same time. Under the action of the self-priming pump 7, the hot water in the hot water pool 1 and the cold water in the warm water tank 2 or the cold water tank 3 enter the first pipe 6 at the same time. After mixing, they flow to the hot water end 4 through the second pipe 8 to provide hot water to the hot water end 4. The outlet water temperature of the hot water end 4 can be set and adjusted. A bottom valve is provided at one end of the first pipe 6 located in the hot water pool 1. The controller 20 controls the flow of the fourth valve 26 and the third valve 27, thereby controlling the ratio of hot water and cold water, and then controlling the water temperature in the second pipe 8, so that the outlet water temperature of the hot water end 4 meets the requirements.

[0026] The controller 20 may adopt a PLC to control the operation of components such as pumps and valves in the system and realize automatic control of temperature and liquid level.

[0027] In the utility model, in order to ensure that ozone is fully and evenly fused with water, the ozone protection device (or ozone multi-stage fusion device) includes a controller 20, an ozone supply mechanism 19, an air dissolving pump 21 and a jet fusion device 22 which are connected in sequence. The air dissolving pump 21 is connected to the cold water tank 3 through a sixth pipeline 23, and a first valve 24 is arranged on the sixth pipeline 23; the jet fusion device 22 is arranged on the fifth pipeline 17, and the jet fusion device 22 is connected to the warm water tank 2 through a seventh pipeline 25, and a fourth valve 26 is arranged on the seventh pipeline 25. A third valve 27 is arranged on the fifth pipeline 17 between the jet fusion device 22 and the cold water tank 3, and a second valve 18 is arranged on the fifth pipeline 17 between the jet fusion device 22 and the first pipeline 6; the first valve 24, the third valve 27, the fourth valve 26, the air dissolving pump 21 and the ozone machine 19 are all connected to the controller 20.

[0028] The ozone supply mechanism 19 is used to generate ozone, and the existing ozone generating equipment can be used. The air dissolving pump 21 can extract the water in the warm water tank 2 and the cold water tank 3, and fully fuse the ozone with the water, and then use the jet fusion device 22 for secondary fusion, and the water fused with ozone can be transported to the cold water tank 3, the warm water tank 2 or the first pipeline 6. After entering the first pipeline 6, the ozone and the oxygen after the ozone decomposition are further fused with the water by the self-priming pump 7, and finally transported to the hot water end 4. Ozone participates in sterilization and oxidation reactions in water and accelerates decomposition, releasing oxygen, sterilizing the microorganisms in the water and the microorganisms in the equipment facilities, pipelines, and media, and also forming a certain amount of dissolved oxygen in the water, inhibiting the metabolism of anaerobic microorganisms, and the water body will not turn black and smelly. Different ozone requirements can be designed according to the different degrees of water pollutants. For the recycling of cooling hot water for liquor production of the utility model, the ratio of ozone amount to water flow, the maximum ozone concentration in the water of 0.1ppm-0.5ppm can solve the problem of hot water recycling and turning black and smelly. When the water reaches the boiler softening water equipment, the ozone concentration in the water is already very low, the dissolved oxygen concentration reaches the highest, and the effect of ozone on the resin no longer exists. When the water from the device reaches the bathing facilities, the ozone concentration in the water is already very low, the dissolved oxygen concentration reaches the highest, and almost no ozone is released into the air to cause harm to the human body.

[0029] In order to ensure that the ozone-containing water evenly enters the warm water tank 2 and the cold water tank 3, a distributor 28 is provided in each of the warm water tank 2 and the cold water tank 3, and the fifth pipe 17 and the seventh pipe 25 are respectively connected to the distributor 28. The distributor 28 can be a pipe network, and the pipe network is provided with multiple evenly distributed outlets.

[0030] In order to facilitate the sterilization of the cold water end 5, the dissolved air pump 21 is connected to the cold water end 5 through the eighth pipe 29. The eighth pipe 29 is provided with a ninth valve 30. When the ninth valve 30 is opened, the mixture of ozone and water in the dissolved air pump 21 can enter the cold water end 5 through the eighth pipe 29, thereby sterilizing and oxygenating the cold water end 5.

[0031] In the utility model, when the hot water end 4 is discharging water, the pressure sensor 10 detects that the pressure in the second pipe 8 is reduced, and the controller 20 controls the self-priming pump 7 to start, and the hot water in the hot water pool 1 is transported to the second pipe 8, and the second valve 18 is controlled to open, and the ozone supply mechanism 19 and the air dissolving pump 21 are started, and the first valve 24 is opened, and the air dissolving pump 21 pumps out the cold water in the cold water tank 3, and the ozone generated by the ozone supply mechanism 19 is mixed with the cold water in the air dissolving pump 21, and then mixed again in the jet fusion device 22, and finally the cold water containing ozone reaches the inlet end of the self-priming pump 7, and the cold water containing ozone is mixed with the hot water, and then flows to the hot water end 4 through the second pipe 8, and provides hot water to the hot water end 4. By controlling the flow of cold water and hot water, the water temperature can be adjusted.

[0032] When the liquid level in the hot water pool 1 is low, the fourth valve 26 is opened to directly use the warm water in the warm water tank 2 for recycling.

[0033] When the liquid level in the hot water pool 1 is high, the fifth valve 16 is opened, the self-priming pump 7 is started, and the hot water in the hot water pool 1 is transported to the warm water tank 2. When the liquid level in the hot water pool 1 drops to a suitable value, the self-priming pump 7 and the fifth valve 16 are closed.

[0034] At the set time, close the second valve 18, start the ozone supply mechanism 19 and the dissolved air pump 21, open the first valve 24, the third valve 27, and the fourth valve 26, the dissolved air pump 21 draws out the cold water in the cold water tank 3, mixes it with ozone, and then passes through the jet fusion device 22 for secondary fusion, and finally enters the warm water tank 2 and the cold water tank 3 to sterilize and oxygenate the warm water tank 2 and the cold water tank 3.

[0035] When the liquid level in the cold water tank 3 is high, close the second valve 18, the third valve 27, and the fourth valve 26, open the first valve 24, the ninth valve 30 and the seventh valve 32 (or the eighth valve 33, the sixth valve 31), start the clean water pump 14, and transport the cold water in the cold water tank 3 to the cold water use end 5.

[0036] After treatment by this system, the water quality of the cold water end 5 and the hot water end 4 meets the requirements of the "National Drinking Water Quality Standard (GB5749-2022)".

[0037] The utility model can realize the reuse of cooling hot water in liquor production, bringing certain economic effects. Based on the calculation that a liquor enterprise recycles and utilizes 200 tons of cooling hot water per day on average:

[0038] 1. Economic benefits of water conservation: The daily recycled water consumption is calculated based on the actual local industrial water unit price, averaging 200 tons / day, with a unit price of 7.10 yuan / ton, or 1,420.00 yuan / day. With 24 days of production per month and 10 months per year, the water fee is around 340,800 yuan / year (340,800 yuan / year).

[0039] 2. Energy saving and economic benefits: To heat 1,000 kg of 20-degree Celsius tap water to 40 degrees Celsius, about 2.2 cubic meters of natural gas are needed. Efficiency loss: The boiler will have a certain amount of energy loss when burning natural gas, so the combustion efficiency needs to be considered. Assuming the combustion efficiency is 90%, that is, there is a 10% energy loss, 2.2 / 0.9 = 2.44 cubic meters of natural gas. The unit price of natural gas is 3.5 yuan, and the production is 10 months a year, 24 days a month, and 200 tons of hot water a day, 200*2.44*3.5*10*24 = 409,920.00 yuan / year.

[0040] 3. Sewage treatment costs: If the hot water is directly discharged into the sewage pipe network, the sewage treatment fee is calculated at 15-35 yuan / ton (15 yuan / ton for daily wastewater treatment of more than 400 tons). The average discharge of hot water to the sewage pipe network is 200 tons / day, with a unit price of 25 yuan / day, 5,000 yuan / day, 24 days of production per month, 10 months a year, and the sewage treatment fee is about 1,200,000 yuan / year (1.2 million yuan / year).

[0041] It can be seen that the utility model recycles and reuses the hot water for cooling liquor production, which not only utilizes high-quality water (hardness reduced by about 30%), but also saves the treatment cost of directly discharging it into the sewage network. It can also provide hot water of suitable temperature to the hot water end 4, reduce the energy consumption of boilers and bathing equipment, and save the cost of water itself.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The system for recycling cooling hot water in liquor production is characterized by: The invention comprises a controller (20), a hot water pool (1), a warm water tank (2), a cold water tank (3), a hot water water end (4), a cold water water end (5) and an ozone protection device, wherein the hot water pool (1) is connected to a self-priming pump (7) via a first pipe (6), the self-priming pump (7) is connected to the hot water water end (4) via a second pipe (8), the second pipe (8) is provided with a temperature sensor (9) and a pressure sensor (10); the second pipe (8) is connected to the top of the warm water tank (2) via a third pipe (11), the bottom of the warm water tank (2) is connected to the top of the cold water tank (3) via a cooling pipe (12), and the cold water tank (3) is connected to a clean water pump (14) via a fourth pipe (13). The clean water pump (14) is connected to the cold water end (5); the cold water tank (3) is connected to the first pipe (6) through a fifth pipe (17), and the fifth pipe (17) is provided with a second valve (18); the warm water tank (2), the cold water tank (3), the hot water pool (1) and the first pipe (6) are all connected to the ozone protection device; the hot water pool (1), the warm water tank (2) and the cold water tank (3) are all provided with a liquid level detection element (15), the third pipe (11) is provided with a fifth valve (16), and the second valve (18), the fifth valve (16), the liquid level detection element (15), the temperature sensor (9) and the pressure sensor (10) are all connected to the controller (20).

2. The cooling hot water recycling system for liquor production according to claim 1, characterized in that: The ozone oxygen protection device comprises an ozone supply mechanism (19), an air dissolving pump (21) and a jet fusion device (22) which are connected in sequence. The air dissolving pump (21) is connected to a cold water tank (3) via a sixth pipeline (23), and a first valve (24) is arranged on the sixth pipeline (23); the jet fusion device (22) is arranged on a fifth pipeline (17), and the jet fusion device (22) is connected to a warm water tank (2) via a seventh pipeline (25), and a fourth valve (26) is arranged on the seventh pipeline (25); a third valve (27) is arranged on the fifth pipeline (17) between the jet fusion device (22) and the cold water tank (3), and the second valve (18) is arranged on the fifth pipeline (17) between the jet fusion device (22) and the first pipeline (6); the first valve (24), the third valve (27), the fourth valve (26), the air dissolving pump (21) and the ozone supply mechanism (19) are all connected to a controller (20).

3. The system for recycling cooling hot water for liquor production as claimed in claim 2, characterized in that: The warm water tank (2) and the cold water tank (3) are both provided with a distributor (28), and the fifth pipeline (17) and the seventh pipeline (25) are respectively connected to the distributor (28).

4. The system for recycling cooling hot water for liquor production as claimed in claim 2, characterized in that: The air dissolving pump (21) is connected to the cold water end (5) via an eighth pipeline (29), and a ninth valve (30) is provided on the eighth pipeline (29).

5. The liquor production cooling hot water recycling system according to claim 2, characterized in that: A negative pressure sensor is provided between the first valve (24) and the air dissolving pump (21).

6. The liquor production cooling hot water recycling system according to claim 1, characterized in that: The hot water end (4) comprises boiler water equipment, bathing water equipment and domestic water equipment.

7. The system for recycling cooling hot water for liquor production according to claim 1, characterized in that: The cold water use end (5) comprises a circulating water pool, a raw water pool and other water use pools, and the circulating water pool, the raw water pool and other water use pools are respectively connected to the clean water pump (14) via a sixth valve (31), a seventh valve (32) and an eighth valve (33).

8. The liquor production cooling hot water recycling system according to claim 1, characterized in that: The controller (20) is a PLC.

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