Water circulation system for cooling UHT sterilization machine

Abstract

The utility model discloses a water circulation system for cooling a UHT sterilization machine, which comprises a pure water storage tank and a heat exchanger, the pure water storage tank is communicated with the heat exchanger through a pure water inlet pipeline, and a water pumping piece is arranged in the pure water storage tank; a water pumping piece is also arranged in the water tower water storage tank, and a tower water inlet pipeline and a tower water return pipeline are arranged between the water tower water storage tank and the heat exchanger; the heat exchanger is communicated with the water inlet end of the UHT sterilization machine through a circulating water inlet pipeline, and a valve is arranged on the circulating water inlet pipeline; the water outlet end of the UHT sterilization machine is communicated with the heat exchanger through a circulating water outlet pipeline, and a one-way valve is arranged on the circulating water outlet pipeline. According to the utility model, not only can products in the UHT sterilization machine be cooled, but also incrustation scale can be prevented from being formed in an internal pipeline of the UHT sterilization machine, so that the service life of the UHT sterilization machine is prolonged; the water circulation cooling device is suitable for all scenes where products need to be cooled through water circulation.

Description

Technical Field

[0001] The utility model relates to a water circulation system, in particular to a water circulation system used for cooling a UHT sterilizer. Background Art

[0002] UHT sterilizer is used to sterilize fresh milk, beverages and other products. The sterilization temperature is 135-140℃. After sterilization, the product needs to be cooled to 25℃ before output. Tower water is usually used as cooling water due to its low temperature and low cost. Figure 1 As shown, the tower water in the main line 1 enters the UHT sterilizer 4 through the valve and filter 3 to cool the tubular heat exchanger containing the product, thereby cooling the product. After that, the high-temperature tower water flows back to the main line 1 through the one-way valve 5 and the valve. Figure 1 The middle arrow represents the direction of tower water flow.

[0003] Although the tower water flows through the filter 3 before entering the UHT sterilizer 4, it can only filter out impurities or particles in the tower water, but cannot purify the water quality. The tower water is hard and is prone to scale formation after multiple cycles of cooling in the tubular heat exchanger, resulting in pipe blockage and affecting the cooling effect. In addition, severe scale formation may cause the operating program of the UHT sterilizer 4 to malfunction, resulting in high maintenance costs. Utility Model Content

[0004] The utility model aims to provide a water circulation system for cooling a UHT sterilizer, so as to solve the problem in the prior art that directly cooling a UHT sterilizer with tower water is prone to scale formation, thus affecting the safe operation of the equipment.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A water circulation system for cooling a UHT sterilizer, comprising a pure water storage tank and a heat exchanger, wherein the pure water storage tank is connected to the heat exchanger through a pure water inlet pipeline, and a pumping member is provided in the pure water storage tank;

[0007] It also includes a water tower storage tank, in which a pumping device is also arranged, and a tower water inlet pipeline and a tower water return pipeline are arranged between the water tower storage tank and the heat exchanger;

[0008] The heat exchanger is connected to the water inlet of the UHT sterilizer through a circulating water inlet pipeline, and a valve is provided on the circulating water inlet pipeline; the water outlet of the UHT sterilizer is connected to the heat exchanger through a circulating water outlet pipeline, and a one-way valve is provided on the circulating water outlet pipeline.

[0009] As a limitation of the utility model: it also includes an ice water storage tank for improving cooling efficiency, an ice water inlet pipeline and an ice water return pipeline are arranged between the ice water storage tank and the heat exchanger, and a pumping device is also arranged in the ice water storage tank.

[0010] As a further limitation of the present invention: a gantry for supporting the tower water inlet pipeline, the tower water return pipeline, the ice water inlet pipeline, and the ice water return pipeline is provided at the positions corresponding to the tower water inlet pipeline, the tower water return pipeline, and the ice water return pipeline.

[0011] As a further limitation of the present invention: a water replenishment valve is provided on the pure water inlet pipeline, and valves are provided on the tower water inlet pipeline, the tower water return pipeline, the ice water inlet pipeline, the ice water return pipeline and the circulating water outlet pipeline.

[0012] As another limitation of the present utility model: a pure water tank is arranged between the pure water storage tank and the heat exchanger, the pure water storage tank and the pure water tank, the pure water tank and the heat exchanger are all connected through a pure water inlet pipeline, and a pumping component is also arranged on the pure water inlet pipeline between the pure water tank and the heat exchanger; the circulating water outlet pipeline is connected to the pure water tank.

[0013] As a further limitation of the present invention: the heat exchanger is a plate heat exchanger.

[0014] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0015] The utility model comprises a heat exchanger, and the heat exchanger is connected with a pure water storage tank and a water tower storage tank. Since the tower water has a low temperature, the tower water cools the pure water after entering the heat exchanger, and the cooled pure water enters the UHT sterilizer to cool the tubular heat exchanger containing the product, thereby achieving a cooling effect on the product; after cooling, the pure water with a higher temperature flowing out of the UHT sterilizer will circulate into the heat exchanger and be cooled by the tower water; the pure water is soft and not easy to form scale, which solves the problem in the prior art that the cooling effect is affected by the clogging of the pipeline by scale, and the problem that the operating program of the UHT sterilizer is seriously damaged by the severe scale; the tower water only circulates in the heat exchanger, and if scale is formed, it is only in the heat exchanger, and it only needs to be disassembled and cleaned, which is simple to operate and has low maintenance cost.

[0016] In summary, the utility model can not only cool the products in the UHT sterilizer, but also prevent scale from forming in the internal pipes of the UHT sterilizer, thereby increasing the service life of the UHT sterilizer; the utility model is suitable for all scenarios where product cooling through water circulation is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Figure 1It is a tower water circulation system of a UHT sterilizer in the prior art;

[0019] Figure 2 It is a schematic diagram of the application structure of an embodiment of the utility model.

[0020] In the figure: 1-main line, 2-stop valve, 3-filter, 4-UHT sterilizer, 5-check valve, 6-tower water inlet pipeline, 7-tower water return pipeline, 8-ice water inlet pipeline, 9-ice water return pipeline, 10-plate heat exchanger, 11-pure water inlet pipeline, 12-pure water tank, 13-water pump, 14-pneumatic water supply valve, 15-circulating water inlet pipeline, 16-circulating water outlet pipeline, 161-first water outlet branch pipeline, 162-second water outlet branch pipeline, 163-water outlet main pipeline, 17-pure water storage tank, 18-water tower storage tank, 19-ice water storage tank, 20-gantry. DETAILED DESCRIPTION

[0021] The preferred embodiment of the utility model is described below in conjunction with the accompanying drawings. It should be understood that the water circulation system for cooling a UHT sterilizer described herein is a preferred embodiment, which is only used to illustrate and explain the utility model and does not constitute a limitation of the utility model.

[0022] like Figure 2 As shown, in this embodiment, pure water at room temperature enters the heat exchanger through the pure water inlet pipeline 11. In this embodiment, the heat exchanger is a plate heat exchanger 10, which has a simple structure and low cost. Of course, a tubular heat exchanger can also be selected; low-temperature tower water enters the plate heat exchanger 10 through the tower water inlet pipeline 6 to cool the pure water. After the pure water is cooled, it enters the UHT sterilizer 4 to cool the tubular heat exchanger containing the product, thereby achieving a cooling effect on the product. After cooling, the higher-temperature pure water flowing out of the UHT sterilizer 4 will circulate into the plate heat exchanger 10 to be cooled by the tower water. Figure 2 The middle arrow indicates the direction of water flow.

[0023] The pure water storage tank 17 is connected to the plate heat exchanger 10 through a pure water inlet pipeline 11 . A pumping component is provided in the pure water storage tank 17 . The pumping component is a water pump responsible for pumping pure water into the pure water inlet pipeline 11 .

[0024] A pure water tank 12 is also provided between the pure water storage tank 17 and the plate heat exchanger 10 to facilitate the quantitative circulation of pure water. A liquid level detection device is provided in the pure water tank 12. This structure adopts the existing technology and will not be described in detail here. When the pure water is lower than the set liquid level, water is added to the pure water tank 12. For this purpose, a water replenishment valve is provided on the pure water inlet pipeline 11 between the pure water storage tank 17 and the pure water tank 12. In this embodiment, the water replenishment valve is a pneumatic water replenishment valve 14, which can be automatically opened to replenish water into the pure water tank 12. The water replenishment valve can also be a manual water replenishment valve.

[0025] The pure water tank 12 is also connected to the plate heat exchanger 10 through the pure water inlet pipeline 11. The pure water inlet pipeline 11 is provided with a pumping part and a valve. The pumping part is a water pump 13, so as to pump the pure water in the pure water tank 12 into the plate heat exchanger 10 for tower water to cool it. The valve is a stop valve 2. When the plate heat exchanger 10 needs to be disassembled and cleaned, the stop valve 2 can be closed for easy maintenance. Of course, the valve can also be any one of the existing technologies as long as it can achieve interception.

[0026] like Figure 2 As shown, the water tower water storage tank 18 is connected to the plate heat exchanger 10 through the tower water inlet pipeline 6, and the water tower water storage tank 18 is also provided with a pumping member, which is a water pump responsible for pumping the tower water into the plate heat exchanger 10. A tower water inlet pipeline 6 and a tower water return pipeline 7 are provided between the water tower water storage tank 18 and the heat exchanger. The low-temperature tower water enters the plate heat exchanger 10 through the tower water inlet pipeline 6 to cool the pure water, and then flows back to the water tower water storage tank 18 through the tower water return pipeline 7.

[0027] In order to further improve the cooling efficiency, the present embodiment is further provided with an ice water storage tank 19, and a pumping member is also provided in the ice water storage tank 19, and the pumping member is a water pump, which is responsible for pumping ice water into the plate heat exchanger 10. An ice water inlet pipeline 8 and an ice water return pipeline 9 are provided between the ice water storage tank 19 and the plate heat exchanger 10. The ice water enters the plate heat exchanger 10 through the ice water inlet pipeline 8, and is connected with the tower water to cool the pure water, and then flows back to the ice water storage tank 19 through the ice water return pipeline 9.

[0028] Furthermore, a gantry 20 for supporting the tower water inlet pipeline 6, the tower water return pipeline 7, the ice water inlet pipeline 8, and the ice water return pipeline 9 is provided at the corresponding positions, thereby increasing the stability of the pipeline. In addition, valves are provided on the tower water inlet pipeline 6, the tower water return pipeline 7, the ice water inlet pipeline 8, and the ice water return pipeline 9. The valves are all stop valves 2, which can intercept the tower water and the ice water, and facilitate the disassembly and cleaning of the plate heat exchanger 10. Of course, the valve can also be selected from any one of the existing technologies, as long as it can achieve interception.

[0029] It should be noted that the pumping member in this embodiment is Figure 2 Not shown in the figure, the water pumping member may also select any structure other than a water pump in the prior art, as long as it can pump out water.

[0030] After the pure water is cooled in the plate heat exchanger 10, it enters the UHT sterilizer 4 through the circulating water inlet pipeline 15 to cool the tubular heat exchanger containing the product.

[0031] like Figure 2As shown, this embodiment is explained by taking two UHT sterilizers 4 as an example: the plate heat exchanger 10 is connected to the water inlet end of the UHT sterilizer 4 through a circulating water inlet pipeline 15, and a valve is provided on the circulating water inlet pipeline 15. The valve selects the stop valve 2. When the product needs to be cooled, the stop valve 2 is opened, and low-temperature pure water enters the two UHT sterilizers 4; when no cooling is required, the stop valve 2 can be closed. Of course, the valve can also select any one of the existing technologies.

[0032] The water outlet of the UHT sterilizer 4 is connected to the plate heat exchanger 10 through a circulating water outlet pipeline 16, and the circulating water outlet pipeline 16 includes a first water outlet branch pipeline 161 connected to the water outlet of one of the UHT sterilizers 4, and a second water outlet branch pipeline 162 connected to the water outlet of another UHT sterilizer 4. The first water outlet branch pipeline 161 and the second water outlet branch pipeline 162 are connected to a water outlet main pipeline 163, and the water outlet main pipeline 163 is connected to the pure water tank 12. After the product is cooled, the temperature of the pure water rises. At this time, the pure water is collected into the water outlet main pipeline 163 through the first water outlet branch pipeline 161 and the second water outlet branch pipeline 162 and flows into the pure water tank 12, and then enters the plate heat exchanger 10 to be cooled by tower water and ice water, and the cycle is repeated.

[0033] It should be noted that in this embodiment, the first water outlet branch pipeline 161 and the second water outlet branch pipeline 162 are both provided with a one-way valve 5 to prevent the backflow of pure water in the main water outlet pipeline 163. The first water outlet branch pipeline 161 and the second water outlet branch pipeline 162 are both provided with a valve, and the valve is a stop valve 2. When the UHT sterilizer 4 close to the plate heat exchanger 10 needs to be repaired separately, the stop valve 2 on the second water outlet branch pipeline 162 is closed. At this time, the pure water no longer circulates in the UHT sterilizer 4, but the pure water can still enter another UHT sterilizer 4 from the plate heat exchanger 10 to cool the product normally, and circulate through the first water outlet branch pipeline 161.

[0034] When using this embodiment, pure water enters the pure water tank 12 through the pure water inlet pipeline 11, and then the pure water is pumped from the pure water tank 12 to the plate heat exchanger 10 through the water pump 13. The tower water also enters the plate heat exchanger 10 to cool the pure water. If the outside temperature is high, ice water can be transported to the plate heat exchanger 10. The tower water and ice water cool the pure water together to improve the cooling efficiency. When the product needs to be cooled, open the stop valve 2, and the low-temperature pure water enters the UHT sterilizer 4 through the circulating water inlet pipeline 15 to cool the product, and then the high-temperature pure water flows to the pure water tank 12 through the circulating water outlet pipeline 16 for recycling.

[0035] It should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiment, those skilled in the art can still modify the technical solutions recorded in the above embodiment or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A water circulation system for cooling a UHT sterilizer, characterized in that: It includes a pure water storage tank and a heat exchanger, the pure water storage tank and the heat exchanger are connected through a pure water inlet pipeline, and a pumping part is arranged in the pure water storage tank; It also includes a water tower storage tank, in which a pumping device is also arranged, and a tower water inlet pipeline and a tower water return pipeline are arranged between the water tower storage tank and the heat exchanger; The heat exchanger is connected to the water inlet of the UHT sterilizer through a circulating water inlet pipeline, and a valve is provided on the circulating water inlet pipeline; the water outlet of the UHT sterilizer is connected to the heat exchanger through a circulating water outlet pipeline, and a one-way valve is provided on the circulating water outlet pipeline.

2. The water circulation system for cooling a UHT sterilizer according to claim 1, characterized in that: It also includes an ice water storage tank for improving cooling efficiency. An ice water inlet pipeline and an ice water return pipeline are arranged between the ice water storage tank and the heat exchanger, and a pumping device is also arranged in the ice water storage tank.

3. The water circulation system for cooling a UHT sterilizer according to claim 2, characterized in that: A gantry for supporting the tower water inlet pipeline, the tower water return pipeline, the ice water inlet pipeline, and the ice water return pipeline is provided at the positions corresponding to the tower water inlet pipeline, the tower water return pipeline, and the ice water return pipeline.

4. The water circulation system for cooling a UHT sterilizer according to claim 3, characterized in that: A water replenishment valve is provided on the pure water inlet pipeline, and valves are provided on the tower water inlet pipeline, tower water return pipeline, ice water inlet pipeline, ice water return pipeline and circulating water outlet pipeline.

5. The water circulation system for cooling a UHT sterilizer according to any one of claims 1 to 4, characterized in that: A pure water tank is arranged between the pure water storage tank and the heat exchanger. The pure water storage tank and the pure water tank, the pure water tank and the heat exchanger are all connected through a pure water inlet pipeline. A pumping device is also arranged on the pure water inlet pipeline between the pure water tank and the heat exchanger; the circulating water outlet pipeline is connected to the pure water tank.

6. The water circulation system for cooling a UHT sterilizer according to claim 5, characterized in that: The heat exchanger is a plate heat exchanger.

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