Production tank cleaning and disinfecting device capable of recycling heat energy

Abstract

The utility model discloses a production tank cleaning and sterilizing device capable of recycling heat energy, which comprises a second heat exchanger, a temporary storage tank, a hot water tank, a heating pipeline, a drainage pipeline and a water supply pipeline, hot water in the hot water tank is input into the production tank to be cleaned and disinfected and then discharged to the sewage discharge pool from the water discharge pipeline, a hot fluid channel of the second heat exchanger is connected to the water discharge pipeline, and water discharged from the water discharge pipeline flows through the hot fluid channel of the second heat exchanger. The cold fluid channel of the second heat exchanger and the temporary storage tank are sequentially connected to the water supply pipeline, and water entering from the input end of the water supply pipeline firstly passes through the cold fluid channel of the second heat exchanger for heat exchange, then enters the temporary storage tank and then is provided for the hot water tank. The device is low in energy consumption cost and high in production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of food processing, in particular to a production tank cleaning and disinfection device capable of recovering and utilizing heat energy. Background Art

[0002] With the continuous growth of global energy demand and the tension of energy supply, reducing costs and increasing efficiency, and improving energy utilization efficiency have become the top priorities of many food enterprises. In the production process of paste-like products, due to the generally high consistency, high oil and protein content of paste-like products, in order to keep the cleanliness of the production tank in line with the production hygiene requirements, a large amount of hot water is required to clean and disinfect the production tank before and after production.

[0003] As Figure 2 Shown is a conventional cleaning and disinfection device for cleaning and disinfecting a production tank, which can clean and disinfect the production tank with hot water at 95°C or alkaline water of a certain concentration. It is provided with a hot water tank 4, an alkaline water tank 5, a heating pipeline 9, a return pipeline 13, a drainage pipeline 21, a cleaning water output pipeline 24, a cleaning water return pipeline 25 and a water supply pipeline 2. The output ends of the hot water tank 4 and the alkaline water tank 5 are respectively connected to the input end of the heating pipeline 9. The output end of the heating pipeline 9 is connected to the input end of the return pipeline 13 through a connecting pipeline 12. The output end of the return pipeline 13 is respectively connected to the input ends of the hot water tank 4, the alkaline water tank 5 and the drainage pipeline 21. The cleaning water output pipeline 24 and the cleaning water return pipeline 25 are respectively connected to the output end of the heating pipeline 9 and the input end of the return pipeline 13. The cleaning water output pipeline 24 and the cleaning water return pipeline 25 are used to connect to the production tank 31.

[0004] A first heat exchanger 10 is arranged on the heating pipeline 9. The first heat exchanger 10 is a tubular heat exchanger. The heating pipeline 9 is connected to the cold fluid channel of the tubular heat exchanger. The input end and the output end of the hot fluid channel of the tubular heat exchanger are connected to a steam input pipeline 27 and a steam output pipeline 29. When it is necessary to heat the liquid in the hot water tank 4 or the alkaline water tank 5, the liquid in the hot water tank 4 or the alkaline water tank 5 is controlled to circulate through the heating pipeline 9, the connecting pipeline 12 and the return pipeline 13, and exchange heat with high-temperature steam in the tubular heat exchanger, so as to heat the liquid in the hot water tank 4 or the alkaline water tank 5.

[0005] After the heating of the liquid in the hot water tank 4 or the alkaline water tank 5 is completed, when it is necessary to clean and disinfect the production tank 31, the liquid in the hot water tank 4 or the alkaline water tank 5 is controlled to pass through the heating pipeline, the cleaning water output pipeline 24, the production tank 31, the cleaning water return pipeline 25, the return pipeline 13 and the drainage pipeline 21, and finally discharged to the sewage discharge pool 22.

[0006] The input end of the water supply pipeline 2 is connected to a water source, and the output ends are respectively connected to the input ends of a hot water tank 4 and an alkaline water tank 5. The water supply pipeline 2 is also connected to the input end of a heating pipeline 9. Through the water supply pipeline 2, water can be supplied to the hot water tank 4, the alkaline water tank 5, and the pipeline system.

[0007] However, the above-mentioned existing cleaning and disinfection device for cleaning and disinfecting a production tank has the following deficiencies:

[0008] 1. The above-mentioned existing cleaning and disinfection device directly discharges the water after cleaning and disinfection. When the production tank 31 is cleaned and disinfected with hot water, the discharged water is still at 80 - 85 °C and contains a large amount of waste heat. Direct discharge leads to large heat loss, and a large amount of hot water is required during the cleaning and disinfection process with hot water, resulting in a relatively high cost, about 100 - 150 yuan / ton.

[0009] 2. When the production tank 31 is cleaned and disinfected with hot water, the water in the hot water tank 4 needs to be heated from an initial temperature of 30 °C to a disinfection temperature of 95 °C each time, which takes about 1.5 hours. The heating time is long and the efficiency is low.

[0010] 3. Directly discharging the 80 - 85 °C water into the sewage discharge tank 22 will damage the ecological structure of the microbial community in the sewage discharge tank 22, resulting in a 30 - 35% reduction in the efficiency of the sewage biological treatment process in the sewage discharge tank 22. Summary of the Invention

[0011] The purpose of the present invention is to provide a cleaning and disinfection device for a production tank that can recover and utilize heat energy, with low energy consumption cost and high production efficiency.

[0012] The purpose of the present invention is achieved through the following technical solutions:

[0013] A cleaning and disinfection device for a production tank that can recover and utilize heat energy, which includes a hot water tank, a heating pipeline, a drainage pipeline, and a water supply pipeline. The water supply pipeline supplies water to the hot water tank, and the water in the hot water tank can circulate through the heating pipeline for heating. The hot water in the hot water tank is input into the production tank for cleaning and disinfection and then discharged to the sewage discharge tank through the drainage pipeline. It is characterized in that: it further includes a second heat exchanger and a storage tank. The hot fluid channel of the second heat exchanger is connected to the drainage pipeline, and the water discharged through the drainage pipeline will flow through the hot fluid channel of the second heat exchanger. The cold fluid channel of the second heat exchanger and the storage tank are sequentially connected to the water supply pipeline. The water entering from the input end of the water supply pipeline will first pass through the cold fluid channel of the second heat exchanger for heat exchange and then enter the storage tank, and then be supplied to the hot water tank.

[0014] A further technical solution of the present invention is: it further includes a flow detection switch and a temperature detection probe, and the flow detection switch and the temperature detection probe are respectively installed at the input end of the drainage pipeline.

[0015] A further technical solution of the present utility model is that a water inlet valve is provided at the input end of the cold fluid passage of the second heat exchanger.

[0016] A further technical solution of the present utility model is that the second heat exchanger is a plate heat exchanger.

[0017] A further technical solution of the present utility model is that it further includes a return pipeline, a cleaning water output pipeline and a cleaning water return pipeline. The input end of the water supply pipeline is connected to a water source, the output end of the water supply pipeline is connected to the input end of the hot water tank, the output end of the hot water tank is connected to the input end of the heating pipeline, the output end of the heating pipeline is connected to the input end of the return pipeline through a connecting pipeline, the output end of the return pipeline is connected to the return end of the hot water tank, the input end of the drainage pipeline is connected to the output end of the return pipeline, and the cleaning water output pipeline and the cleaning water return pipeline are respectively connected to the output end of the heating pipeline and the input end of the return pipeline. The cleaning water output pipeline and the cleaning water return pipeline are used to be connected to a production tank.

[0018] A further technical solution of the present utility model is that it further includes an alkaline water tank. The output end of the water supply pipeline and the output end of the return pipeline are also connected to the input end and the return end of the alkaline water tank respectively, and the output end of the alkaline water tank is connected to the input end of the heating pipeline.

[0019] A further technical solution of the present utility model is that a first heat exchanger is provided on the heating pipeline. The cold fluid passage of the first heat exchanger is connected to the heating pipeline, and the input end and the output end of the hot fluid passage of the first heat exchanger are respectively connected to a steam input pipeline and a steam output pipeline.

[0020] Compared with the prior art, the present utility model has the following beneficial effects:

[0021] 1. The present utility model saves time and improves production efficiency:

[0022] The present utility model adds a second heat exchanger and a storage tank. The water input by the water supply pipeline is exchanged heat with the water discharged by the drainage pipeline through the second heat exchanger. The water input by the water supply pipeline will be heated. After the heated water is stored in the storage tank, it is used by the hot water tank, thereby realizing the recovery and utilization of heat energy. During production, the water output from the storage tank to the hot water tank can be heated to the temperature required for cleaning and disinfection in a short time.

[0023] In actual production, after adopting the present utility model, the time required to heat 5 tons of water in the hot water tank to 93°C has been reduced from the original 1.5H to the current 0.5H.

[0024] 2. The present utility model has low energy consumption cost:

[0025] After the heat energy is recycled through the additional second heat exchanger and storage tank in the utility model, the energy consumed for heating the water in the hot water tank will be reduced, thus lowering the energy consumption cost.

[0026] In actual production, 30 tons of hot water at 90 - 93 °C are required for daily cleaning and disinfection. When using the existing cleaning and disinfection device, the steam consumption for heating 30 tons of hot water at 90 - 93 °C is 3.3 tons. After using the cleaning and disinfection device of the utility model, the steam consumption is reduced from the original 3.3 tons to 1.1 tons, a reduction of 2.2 tons, thus saving about 858 yuan per day and generating significant economic benefits.

[0027] 3. After the water discharged from the drainage pipeline of the utility model is heat - exchanged, its temperature will drop to 30 ± 2 °C, which matches the optimal growth conditions of the microorganisms in the sewage treatment tank. After being discharged into the sewage discharge tank, it will not damage the ecological structure of the microbial community in the sewage discharge tank, but is beneficial to the growth of microorganisms, thus improving the efficiency of the sewage biological treatment process in the sewage discharge tank, which can be increased by about 20 - 25% in practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the production tank cleaning and disinfection device according to an embodiment of the utility model;

[0029] Figure 2 is a schematic structural diagram of the existing cleaning and disinfection device for cleaning and disinfecting the production tank.

[0030] The meanings of the reference numerals in the drawings are as follows:

[0031] 1 - Second heat exchanger; 2 - Water supply pipeline; 3 - Storage tank; 4 - Hot water tank; 5 - Alkaline water tank; 6 - First output valve; 7 - Second output valve; 8 - Process pump; 9 - Heating pipeline; 10 - First heat exchanger; 11 - Connecting valve; 12 - Connecting pipeline; 13 - Return pipeline; 14 - First return valve; 15 - Second return valve; 16 - First water supply valve; 17 - Second water supply valve; 18 - Drain valve; 19 - Flow detection switch; 20 - Temperature detection probe; 21 - Drainage pipeline; 22 - Sewage discharge tank; 23 - Cleaning water output valve; 24 - Cleaning water output pipeline; 25 - Cleaning water return pipeline; 26 - Return pump; 27 - Steam input pipeline; 28 - Steam valve group; 29 - Steam output pipeline; 30 - Water inlet valve; 31 - Production tank. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following further describes the utility model in conjunction with the embodiments.

[0033] In the description of the present utility model, it should be understood that regarding the orientation description, for example, the orientations or positional relationships indicated by up, down, front, back, left, right, etc. are based on the orientations or positional relationships shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0034] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more. Understanding "greater than", "less than", "exceeding", etc. as not including the recited number, and understanding "above", "below", "within", etc. as including the recited number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0035] In the description of the present utility model, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0036] Embodiment:

[0037] Such as Figure 1 As shown, the production tank cleaning and disinfection device capable of heat energy recovery and utilization in this embodiment includes a hot water tank 4, an alkaline water tank 5, a second heat exchanger 1, a storage tank 3, a heating pipeline 9, a drainage pipeline 21, a water supply pipeline 2, a flow detection switch 19, a temperature detection probe 20, a return pipeline 13, a cleaning water output pipeline 24, and a cleaning water return pipeline 25.

[0038] The water supply pipeline 2 supplies water to the hot water tank 4 and the alkaline water tank 5. The input end of the water supply pipeline 2 is connected to a water source, which can be tap water. The output end is respectively connected to the input ends at the tops of the hot water tank 4 and the alkaline water tank 5. The input ends of the hot water tank 4 and the alkaline water tank 5 are respectively provided with a first water supply valve 16 and a second water supply valve 17. The cold fluid channel of the second heat exchanger 1 and the storage tank 3 are sequentially connected to the water supply pipeline 2. The water entering from the input end of the water supply pipeline 2 will first pass through the cold fluid channel of the second heat exchanger 1 for heat exchange and then enter the storage tank 3, and then be supplied to the hot water tank 4 and the alkaline water tank 5. In this embodiment, a water inlet valve 30 is provided at the input end of the cold fluid channel of the second heat exchanger 1 for controlling the water inlet.

[0039] The specific connection structure of the second heat exchanger 1 and the storage tank 3 is as follows: The input end of the cold fluid channel of the second heat exchanger 1 is connected to the input end of the water supply pipeline 2, the output end of the cold fluid channel of the second heat exchanger 1 is connected to the input end at the top of the storage tank 3, and the output end at the bottom of the storage tank 3 is respectively connected to the input ends at the tops of the hot water tank 4 and the alkaline water tank 5. The output end at the bottom of the storage tank 3 in this embodiment is also connected to the input end of the heating pipeline 9.

[0040] The output ends of the hot water tank 4 and the alkaline water tank 5 are respectively connected to the input end of the heating pipeline 9, and a first output valve 6 and a second output valve 7 are respectively provided at the output ends of the hot water tank 4 and the alkaline water tank 5. The output end of the heating pipeline 9 is connected to the input end of the return pipeline 13 through a connecting pipeline 12, and a connecting valve 11 is provided on the connecting pipeline 12. The output end of the return pipeline 13 is respectively connected to the return ends of the hot water tank 4 and the alkaline water tank 5, and a first return valve 14 and a second return valve 15 are respectively provided at the return ends of the hot water tank 4 and the alkaline water tank 5. The cleaning water output pipeline 24 and the cleaning water return pipeline 25 are respectively connected to the output end of the heating pipeline 9 and the input end of the return pipeline 13, and the cleaning water output pipeline 24 and the cleaning water return pipeline 25 are used to connect to the production tank 31. A return pump 26 is provided on the cleaning water return pipeline 25 in this embodiment, and a cleaning water output valve 23 is provided on the cleaning water output pipeline 24.

[0041] The input end of the drain pipeline 21 is connected to the output end of the return pipeline 13, the output end of the drain pipeline 21 is connected to the sewage discharge pool 22, and a drain valve 18 is provided at the input end of the drain pipeline 21. A flow detection switch 19 and a temperature detection probe 20 are respectively installed at the input end of the drain pipeline 21, and it is turned on when the flow detection switch 19 detects water flowing into the drain pipeline 21. The temperature detection probe 20 is used to detect the water temperature in the drain pipeline 21. The hot fluid channel of the second heat exchanger 1 is connected to the drain pipeline 21, and the water discharged from the drain pipeline 21 will flow through the hot fluid channel of the second heat exchanger 1 to exchange heat with the water flowing through the cold fluid channel of the second heat exchanger 1.

[0042] The second heat exchanger 1 in this embodiment is a plate heat exchanger. The structures of the heat exchangers all adopt conventional structures, and there will be a cold fluid channel and a hot fluid channel inside, and the liquids flowing through the cold fluid channel and the hot fluid channel will exchange heat.

[0043] On the heating pipeline 9 of this embodiment, a process pump 8 and a first heat exchanger 10 are successively arranged. The first heat exchanger 10 is a tubular heat exchanger. The cold fluid channel of the first heat exchanger 10 is connected to the heating pipeline 9. The input end and the output end of the hot fluid channel of the first heat exchanger 10 are respectively connected to a steam input pipeline 27 and a steam output pipeline 29. A steam valve group 28 is arranged on the steam input pipeline 27, and the steam input pipeline 27 is used to connect to a high-temperature steam source. During use, when the steam flows through the hot fluid channel of the first heat exchanger 10, it transfers heat to the liquid flowing through the cold fluid channel of the first heat exchanger 10.

[0044] In this embodiment, except for the valves on the steam input pipeline 27 and the steam output pipeline 29, the rest of the valves controlling the liquid flow are pneumatic butterfly valves.

[0045] The usage process of the production tank cleaning and disinfection device of this embodiment is as follows:

[0046] Before use, the cleaning water output pipeline 27 and the cleaning water return pipeline 28 are connected to the production tank 31, the steam input pipeline 27 is connected to the high-temperature steam source, and the input end of the water supply pipeline 2 is connected to the water source.

[0047] When the production tank cleaning and disinfection device starts hot water disinfection, the production tank cleaning and disinfection device will detect the water temperature in the hot water tank 4. When the water temperature in the hot water tank 4 is lower than the disinfection temperature of 95 °C, it is necessary to first heat the water in the hot water tank 4. The production tank cleaning and disinfection device will open the first output valve 6, the communication valve 11 and the first return valve 14, start the process pump 8, and open the steam valve group 28 of the steam input pipeline 27, so that the high-temperature steam flows through the hot fluid channel of the first heat exchanger 10 and then is discharged from the steam output pipeline 29. The water in the hot water tank 4 will successively pass through the first output valve 6, the process pump 8, the cold fluid channel of the first heat exchanger 10, the communication pipeline 12, the return pipeline 13, and the first return valve 14, and finally flow back to the hot water tank 4. When passing through the first heat exchanger 10, it will exchange heat with the high-temperature steam to achieve heating. The water in the hot water tank 4 is continuously circulated through the first heat exchanger 10 until the water temperature in the hot water tank 4 is heated to the disinfection temperature of 95 °C.

[0048] After the heating is completed, the connecting valve 11 and the hot water return valve 14 are closed, the cleaning water output valve 23 and the drain valve 18 are opened. The water in the hot water tank 4 will successively pass through the process pump 8, the cold fluid channel of the tubular heat exchanger 10, and the cleaning water output pipeline 24, and then enter the production tank 31 for cleaning and disinfection. Then the water flowing through the production tank will pass through the cleaning water return pipeline 25, the return pipeline 13, the flow detection switch 19, the temperature detection probe 20, and the hot fluid channel of the second heat exchanger 1, and finally be discharged to the sewage discharge pool 22. When the flow detection switch 19 detects the discharge of hot water and the temperature detection probe 20 detects that the water temperature reaches the set temperature, the inlet valve 30 is controlled to open. The water from the water source will flow through the cold fluid channel of the second heat exchanger 1 and then flow into the temporary storage tank 3. When flowing through the cold fluid channel of the second heat exchanger 1, it will exchange heat with the hot water flowing through the hot fluid channel of the second heat exchanger 1, so that the water in the temporary storage tank 3 has been heated to a certain temperature, thus realizing the recovery of thermal energy.

[0049] When it is necessary to supply water to the hot water tank 4 or the alkaline water tank 5 of the cleaning device, the first water supply valve 16 or the second water supply valve 17 is opened. The water in the temporary storage tank 3 will enter the hot water tank 4 or the alkaline water tank 5. After the water supply is completed, the first water supply valve 16 and the second water supply valve 17 are closed.

[0050] When starting alkaline water disinfection, the process is similar to hot water disinfection, but the alkaline water in the alkaline water tank 5 does not need to be heated to a high temperature of 95 °C.

[0051] The above embodiments of the present invention do not limit the protection scope of the present invention. The implementation manners of the present invention are not limited thereto. All kinds of modifications, substitutions or changes made to the above structure of the present invention according to the above content of the present invention, in accordance with the common general knowledge and customary means in the art, without departing from the above basic technical idea of the present invention, shall fall within the protection scope of the present invention.

Claims

1. A production tank cleaning and disinfection device capable of heat recovery, comprising a hot water tank, a heating pipeline, a drainage pipeline and a water supply pipeline, wherein the water supply pipeline supplies water to the hot water tank, the water in the hot water tank circulates through the heating pipeline for heating, and the hot water in the hot water tank is input into the production tank for cleaning and disinfection and then discharged from the drainage pipeline to the sewage discharge pool, characterized in that: It also includes a second heat exchanger and a temporary storage tank. The hot fluid channel of the second heat exchanger is connected to the drainage pipeline. The water discharged through the drainage pipeline will flow through the hot fluid channel of the second heat exchanger. The cold fluid channel of the second heat exchanger and the temporary storage tank are connected to the water supply pipeline in sequence. The water entering from the input end of the water supply pipeline will first pass through the cold fluid channel of the second heat exchanger for heat exchange before entering the temporary storage tank and then be provided to the hot water tank.

2. The production tank cleaning and disinfection device capable of heat recovery according to claim 1 is characterized in that: It also includes a flow detection switch and a temperature detection probe, which are respectively installed at the input end of the drainage pipeline.

3. The production tank cleaning and disinfection device capable of heat energy recovery according to claim 1 is characterized in that: The input end of the cold fluid channel of the second heat exchanger is provided with a water inlet valve.

4. The production tank cleaning and disinfection device capable of heat recovery according to claim 1 is characterized in that: The second heat exchanger is a plate heat exchanger.

5. The production tank cleaning and disinfection device capable of heat energy recovery according to claim 1 is characterized in that: It also includes a reflux pipeline, a cleaning water output pipeline and a cleaning water return pipeline, the input end of the water supply pipeline is connected to a water source, the output end of the water supply pipeline is connected to the input end of the hot water tank, the output end of the hot water tank is connected to the input end of the heating pipeline, the output end of the heating pipeline is connected to the input end of the reflux pipeline through a connecting pipeline, the output end of the reflux pipeline is connected to the reflux end of the hot water tank, the input end of the drainage pipeline is connected to the output end of the reflux pipeline, the cleaning water output pipeline and the cleaning water return pipeline are respectively connected to the output end of the heating pipeline and the input end of the reflux pipeline, and the cleaning water output pipeline and the cleaning water return pipeline are used to be connected to a production tank.

6. The production tank cleaning and disinfection device capable of heat recovery according to claim 5 is characterized in that: It also includes an alkaline water tank, the output end of the water supply pipeline and the output end of the return pipeline are also connected to the input end and the return end of the alkaline water tank, and the output end of the alkaline water tank is connected to the input end of the heating pipeline.

7. The production tank cleaning and disinfection device capable of heat recovery according to claim 1 is characterized in that: The heating pipeline is provided with a first heat exchanger, the cold fluid channel of the first heat exchanger is connected to the heating pipeline, and the input end and output end of the hot fluid channel of the first heat exchanger are respectively connected to the steam input pipeline and the steam output pipeline.

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