Multistage sterilization device for dairy products

Abstract

A multi-stage sterilization device for dairy products comprises a first centrifugal pump, a first tubular heat exchanger, a second tubular heat exchanger, a retainer, a third tubular heat exchanger, a second centrifugal pump, a fourth tubular heat exchanger, a third centrifugal pump and an expansion tank, the first tubular heat exchanger is arranged at the rear end of the first centrifugal pump, and the second tubular heat exchanger is arranged at the rear end of the first tubular heat exchanger. A retainer is arranged at the rear end of the second tubular heat exchanger, a third tubular heat exchanger is arranged at the rear end of the retainer, a fourth tubular heat exchanger is arranged on the second tubular heat exchanger, a third centrifugal pump is arranged on the fourth tubular heat exchanger, a second centrifugal pump is arranged on the third tubular heat exchanger, and an expansion tank is arranged at the rear end of the second centrifugal pump. An expansion tank is arranged at the rear end of the third centrifugal pump; when the device is used, a conventional sterilization device is connected, pasteurized milk and ultrahigh-temperature sterilized milk can be produced on the same production line, the efficiency is improved, and the cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to dairy sterilization technical field especially, relate to a dairy multistage sterilization device. BACKGROUND

[0002] Dairy refers to using cow milk or goat milk and its processing products as main raw materials, adding or not adding appropriate amount of vitamin, mineral substance and other auxiliary materials, using the conditions required by laws, regulations and standards, and being processed into various foods, also called butter products, one of the most important steps in the production of dairy is sterilization, nowadays, the sterilization or sterilization treatment of global cow milk is usually pasteurization or ultra high temperature (UHT) instantaneous sterilization, pasteurization is based on the poor heat resistance of pathogen, and uses mild temperature and appropriate time to kill pathogenic microorganisms in cow milk, but cannot kill heat-resistant spores, so pasteurized milk needs to be stored at a temperature of about 4 DEG C, UHT sterilization can store cow milk at ambient temperature, has a long shelf life, but some chemical and physical changes occur during storage, such as gelation, flavor change, etc., which reduces the quality of cow milk.

[0003] The existing dairy sterilization device usually directly uses a plate heat exchanger for sterilization treatment, which can only be pasteurized, and another sterilization line is needed for ultra high temperature sterilization, which is relatively cumbersome, in order to solve the above problems, a dairy multistage sterilization device is provided. UTILITY MODEL CONTENT

[0004] In view of the above technical problems, the utility model provides a dairy multistage sterilization device, which comprises a first centrifugal pump, a first tube heat exchanger, a second tube heat exchanger, a retainer, a third tube heat exchanger, a second centrifugal pump, a fourth tube heat exchanger, a third centrifugal pump and an expansion tank, the rear end of the first centrifugal pump is provided with the first tube heat exchanger, the rear end of the first tube heat exchanger is provided with the second tube heat exchanger, the rear end of the second tube heat exchanger is provided with the retainer, the rear end of the retainer is provided with the third tube heat exchanger, the fourth tube heat exchanger is arranged on the second tube heat exchanger, the third centrifugal pump is arranged on the fourth tube heat exchanger, the second centrifugal pump is arranged on the third tube heat exchanger, the rear end of the second centrifugal pump is provided with the expansion tank, and the rear end of the third centrifugal pump is provided with the expansion tank.

[0005] Further, the first centrifugal pump is connected with the outside through a pipeline for the entry of dairy products, the outlet of the third tube heat exchanger is connected with the outside through a pipeline for the output of dairy products, and the first centrifugal pump, the first tube heat exchanger, the second tube heat exchanger, the retainer and the third tube heat exchanger constitute a dairy flow channel.

[0006] Further, the outlet of the second centrifugal pump is connected with the circulation inlet of the third tubular heat exchanger through a pipeline, the circulation outlet of the third tubular heat exchanger is connected with the circulation inlet of the first tubular heat exchanger, and the circulation outlet of the first tubular heat exchanger is connected with the inlet of the second centrifugal pump through a pipeline, and the first tubular heat exchanger, the third tubular heat exchanger and the second centrifugal pump form a water circulation channel.

[0007] Further, the outlet of the third centrifugal pump is connected with the inlet of the fourth tubular heat exchanger through a pipeline, the outlet of the fourth tubular heat exchanger is connected with the circulation inlet of the second tubular heat exchanger through a pipeline, and the circulation outlet of the second tubular heat exchanger is connected with the inlet of the third centrifugal pump through a pipeline, and the second tubular heat exchanger, the fourth tubular heat exchanger and the third centrifugal pump form another water circulation channel.

[0008] Further, the circulation inlet of the fourth tubular heat exchanger is connected with external steam through a break vacuum valve, a steam regulating valve, a pneumatic angle seat valve and a steam manual stop valve, and the circulation outlet is connected with an external condensate channel through a manual ball valve and a float ball trap valve, a steam check valve and a manual ball valve.

[0009] Further, a temperature sensor is arranged on the pipeline connecting the retainer with the third tubular heat exchanger, an exhaust valve is arranged at the circulation inlet of the third tubular heat exchanger, and a temperature sensor and an exhaust valve are arranged on the pipeline connecting the outlet of the fourth tubular heat exchanger with the circulation inlet of the second tubular heat exchanger.

[0010] Further, an expansion tank is arranged at the inlet of the second centrifugal pump, and an external soft water source is arranged outside the expansion tank, a manual ball valve is arranged between the second centrifugal pump and the expansion tank, the manual ball valve is arranged in the water circulation channel formed by the first tubular heat exchanger, the third tubular heat exchanger and the second centrifugal pump, and a safety valve, a check valve, a pressure reducing valve, a solenoid valve and a manual ball valve are arranged between the expansion tank and the external soft water source in sequence.

[0011] Further, an expansion tank is arranged at the inlet of the third centrifugal pump, and an external soft water source is arranged outside the expansion tank, a manual ball valve is arranged between the third centrifugal pump and the expansion tank, the manual ball valve is arranged outside the water circulation channel formed by the second tubular heat exchanger, the fourth tubular heat exchanger and the third centrifugal pump, and a safety valve, a check valve, a pressure reducing valve, a solenoid valve and a manual ball valve are arranged between the expansion tank and the external soft water source in sequence.

[0012] Further, a needle valve, a solenoid valve and a manual ball valve are arranged on the first centrifugal pump and connected with an external soft water source, so as to cool the first centrifugal pump, and a flow switch and a pressure gauge are arranged at the inlet and the outlet of the second centrifugal pump respectively, and a flow switch and a pressure gauge are arranged at the inlet and the outlet of the third centrifugal pump respectively.

[0013] The utility model discloses a beneficial effect:

[0014] The utility model discloses a beneficial effect: BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic drawing of a dairy product multistage sterilization device of the utility model;

[0016] As shown in the figure: 1, first centrifugal pump;2, first tubular heat exchanger;3, second tubular heat exchanger;4, retainer;5, third tubular heat exchanger;6, second centrifugal pump;7, fourth tubular heat exchanger;8, third centrifugal pump;9, expansion tank;10, manual ball valve;11, solenoid valve;12, needle valve;13, exhaust valve;14, temperature sensor;15, pressure gauge;16, flow switch;17, safety valve;18, check valve;19, pressure reducing valve;20, steam manual stop valve;21, pneumatic angle seat valve;22, steam regulating valve;23, vacuum breaker;24, float ball type trap;25, steam check valve. DETAILED DESCRIPTION

[0017] The technical scheme of the utility model will be described below in connection with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments that the ordinary skilled in the art obtains without making the creative labor belong to the scope of the utility model protection.

[0018] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or positional relation based on the orientation or positional relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and it is not indicated or implied that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or positional relation based on the orientation or positional relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and it is not indicated or implied that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0020] Embodiment 1

[0021] The utility model provides a kind of dairy product multistage sterilization device, including first centrifugal pump 1, first tube heat exchanger 2, second tube heat exchanger 3, retainer 4, third tube heat exchanger 5, second centrifugal pump 6, fourth tube heat exchanger 7, third centrifugal pump 8, expansion tank 9, first centrifugal pump 1 rear end is provided with first tube heat exchanger 2, first tube heat exchanger 2 rear end is provided with second tube heat exchanger 3, second tube heat exchanger 3 rear end is provided with retainer 4, retainer 4 rear end is provided with third tube heat exchanger 5, fourth tube heat exchanger 7 is provided on second tube heat exchanger 3, third centrifugal pump 8 is provided on fourth tube heat exchanger 7, second centrifugal pump 6 is provided on third tube heat exchanger 5, the rear end of second centrifugal pump 6 is provided with expansion tank 9, the rear end of third centrifugal pump 8 is provided with expansion tank 9;

[0022] Further, first centrifugal pump 1 has pipeline and outside connection, for the entry of dairy product, third tube heat exchanger 5 outlet has pipeline and outside connection, for outputting dairy product, first centrifugal pump 1, first tube heat exchanger 2, second tube heat exchanger 3, retainer 4, third tube heat exchanger 5 form dairy product flow channel;

[0023] Further, the outlet of the second centrifugal pump 6 is connected with the circulation inlet of the third tube heat exchanger 5 through a pipeline, the circulation outlet of the third tube heat exchanger 5 is connected with the circulation inlet of the first tube heat exchanger 2, the circulation outlet of the first tube heat exchanger 2 is connected with the inlet of the second centrifugal pump 6 through a pipeline, and the first tube heat exchanger 2, the third tube heat exchanger 5 and the second centrifugal pump 6 form a water circulation channel;

[0024] Further, the outlet of the third centrifugal pump 8 is connected with the inlet of the fourth tube heat exchanger 7 through a pipeline, the outlet of the fourth tube heat exchanger 7 is connected with the circulation inlet of the second tube heat exchanger 3 through a pipeline, the circulation outlet of the second tube heat exchanger 3 is connected with the inlet of the third centrifugal pump 8 through a pipeline, and the second tube heat exchanger 3, the fourth tube heat exchanger 7 and the third centrifugal pump 8 form another water circulation channel;

[0025] Further, the circulation inlet of the fourth tube heat exchanger 7 is connected with external steam through a break vacuum valve 23, a steam regulating valve 22, a pneumatic angle seat valve 21 and a steam manual stop valve 20, and the circulation outlet is connected with an external condensate channel through a manual ball valve 10, a float ball trap valve 24, a steam check valve 25 and the manual ball valve 10;

[0026] Further, a temperature sensor 14 is arranged on the pipeline connecting the retainer 4 and the third tube heat exchanger 5, an exhaust valve 13 is arranged at the circulation inlet of the third tube heat exchanger 5, and a temperature sensor 14 and an exhaust valve 13 are arranged on the pipeline connecting the outlet of the fourth tube heat exchanger 7 and the circulation inlet of the second tube heat exchanger 3;

[0027] Further, an expansion tank 9 is arranged at the inlet of the second centrifugal pump 6, the expansion tank 9 is externally connected with an external soft water source, a manual ball valve 10 is arranged between the second centrifugal pump 6 and the expansion tank 9, the manual ball valve 10 is located in the water circulation channel formed by the first tube heat exchanger 2, the third tube heat exchanger 5 and the second centrifugal pump 6, and a safety valve 17, a check valve 18, a pressure reducing valve 19, an electromagnetic valve 11 and the manual ball valve 10 are sequentially arranged between the expansion tank 9 and the external soft water source;

[0028] Further, an expansion tank 9 is arranged at the inlet of the third centrifugal pump 8, the expansion tank 9 is externally connected with an external soft water source, a manual ball valve 10 is arranged between the third centrifugal pump 8 and the expansion tank 9, the manual ball valve 10 is located outside the water circulation channel formed by the second tube heat exchanger 3, the fourth tube heat exchanger 7 and the third centrifugal pump 8, and a safety valve 17, a check valve 18, a pressure reducing valve 19, an electromagnetic valve 11 and the manual ball valve 10 are sequentially arranged between the expansion tank 9 and the external soft water source;

[0029] Further, the first centrifugal pump 1 is provided with a needle valve 12, a solenoid valve 11 and a manual ball valve 10, and is connected with an external soft water source, for cooling the first centrifugal pump 1 of the machine seal, and the inlet and outlet of the second centrifugal pump 6 are respectively provided with a flow switch 16 and a pressure gauge 15, and the inlet and outlet of the third centrifugal pump 8 are respectively provided with a flow switch 16 and a pressure gauge 15;

[0030] The working principle is that: in use, the device is added in the original sterilization device, and external dairy products enter the first tubular heat exchanger 2 under the action of the first centrifugal pump 1, and are transported by the water circulation channel formed by the first tubular heat exchanger 2, the third tubular heat exchanger 5 and the second centrifugal pump 6 to heat water, so that the temperature is increased from 90℃ to 116℃, a total temperature increase of 26 degrees, wherein the temperature of the circulating water entering the first tubular heat exchanger 2 is 121℃, the temperature of the circulating water leaving the first tubular heat exchanger 2 is 95℃, the temperature of the circulating water in the first tubular heat exchanger 2 is reduced by 26 degrees, the dairy products pass through the first tubular heat exchanger 2, and the dairy products enter the second tubular heat exchanger 3, and under the action of the water circulation channel formed by the second tubular heat exchanger 3, the fourth tubular heat exchanger 7 and the third centrifugal pump 8, the dairy products are heated from 116℃ to 125℃, and then enter the retainer 4 for sterilization for four seconds, and then enter the third tubular heat exchanger 5, and the temperature of the dairy products at the outlet of the retainer 4 is detected by the temperature sensor 14, and the temperature of the dairy products is reduced from 125℃ to 99℃ under the action of the third tubular heat exchanger 5, a total temperature decrease of 26 degrees, wherein the temperature of the circulating water entering the third tubular heat exchanger 5 is 95℃, the temperature of the circulating water leaving the first tubular heat exchanger 2 is 121℃, and the temperature of the circulating water in the third tubular heat exchanger 5 is increased by 26 degrees, and the dairy products pass through the pipeline and leave the device, wherein the first tubular heat exchanger 2 is used for preheating the dairy products at low temperature, the initial temperature is increased by using the waste heat of the water circulation channel, the second tubular heat exchanger 3 sterilizes the dairy products by the circulating water heated by steam, the retainer 4 ensures that the dairy products maintain at a set temperature for a certain period of time to complete complete sterilization, and the third tubular heat exchanger 5 cools the sterilized dairy products by water circulation to the required temperature for pasteurization or normal temperature preservation;

[0031] In the water circulation channel formed by the first tubular heat exchanger 2, the third tubular heat exchanger 5 and the second centrifugal pump 6, the second centrifugal pump 6 is detected and controlled by the flow switch 16 and the pressure gauge 15, and the circulating water in the channel flows through the circulating inlet and outlet of the third tubular heat exchanger 5 and the circulating inlet and outlet of the first tubular heat exchanger 2 in turn, so as to realize energy recovery of preheating and cooling of the dairy products, and the gas in the channel is discharged through the exhaust valve 13;

[0032] In the water circulation channel formed by the second tube heat exchanger 3, the fourth tube heat exchanger 7 and the third centrifugal pump 8, the third centrifugal pump 8 is detected and controlled through the flow switch 16 and the pressure gauge 15, and drives the circulating water in the channel to flow through the inlet of the fourth tube heat exchanger 7, the circulating inlet and outlet of the second tube heat exchanger 3 in turn, so that the circulating water is heated by the steam system and the dairy products are high-temperature sterilized;

[0033] The high-temperature steam is introduced into the circulating inlet of the fourth tube heat exchanger 7 to heat the circulating water in the fourth tube heat exchanger 7, and the circulating water flows into the circulating inlet of the second tube heat exchanger 3 after leaving the fourth tube heat exchanger 7 to disinfect the dairy products, in which process, the temperature sensor 14 detects the temperature at the outlet of the fourth tube heat exchanger 7, and the exhaust valve 13 on the pipeline exhausts the internal gas, and the used steam is condensed into water and discharged to the outside condensate channel through the manual ball valve 10, the float ball trap valve 24, the steam check valve 25 and the manual ball valve 10;

[0034] The two water channels are respectively connected with the two expansion tanks 9 through the manual ball valves 10, the expansion tanks 9 are connected with the external soft water source through the safety valve 17, the check valve 18, the pressure reducing valve 19, the electromagnetic valve 11 and the manual ball valve 10, when the circulating water in the internal circulation channel is sufficient, the manual ball valve 10 at the soft water source is closed and the manual ball valve 10 between the circulation channel and the expansion tank 9 is opened, at this time, the circulating water in the circulation channel is communicated with the circulating water in the expansion tank 9, when the temperature in the circulation channel rises, the circulating water expands and the liquid level in the expansion tank 9 rises, when the temperature in the circulation channel decreases, the circulating water shrinks and the liquid level in the expansion tank 9 decreases, the expansion tank 9 plays a role of adjusting the water pressure in the circulation channel, when the water flow in the circulation channel is insufficient, the manual ball valve 10 at the soft water source is opened to supplement the soft water in the circulation channel.

[0035] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. The various components mentioned in the utility model are common technologies in the prior art, which should be understood by those skilled in the art, the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage pasteurization apparatus for dairy products, characterized in that, The application relates to a milk product processing device, which comprises a first centrifugal pump, a first tubular heat exchanger, a second tubular heat exchanger, a holder, a third tubular heat exchanger, a second centrifugal pump, a fourth tubular heat exchanger, a third centrifugal pump and an expansion tank.

2. A multi-stage milk sterilization device according to claim 1, characterized in that, The first centrifugal pump is connected with the outside through a pipeline for the entry of the milk product, and the outlet of the third tubular heat exchanger is connected with the outside through a pipeline for the output of the milk product.

3. A multi-stage milk sterilization device according to claim 2, characterized in that, The outlet of the second centrifugal pump is connected with the circulating inlet of the third tubular heat exchanger through a pipeline, the circulating outlet of the third tubular heat exchanger is connected with the circulating inlet of the first tubular heat exchanger, and the circulating outlet of the first tubular heat exchanger is connected with the inlet of the second centrifugal pump through a pipeline.

4. A multi-stage milk sterilization device according to claim 3, characterized in that, The outlet of the third centrifugal pump is connected with the inlet of the fourth tubular heat exchanger through a pipeline, the outlet of the fourth tubular heat exchanger is connected with the circulating inlet of the second tubular heat exchanger through a pipeline, and the circulating outlet of the second tubular heat exchanger is connected with the inlet of the third centrifugal pump through a pipeline.

5. A multi-stage milk sterilization apparatus according to claim 4, characterized in that, The circulating inlet of the fourth tubular heat exchanger is connected with the outside steam through a vacuum breaking valve, a steam regulating valve, a pneumatic angle seat valve and a steam manual stop valve, and the circulating outlet is connected with the outside condensate channel through a manual ball valve, a float ball type drain valve, a steam check valve and a manual ball valve.

6. A multi-stage milk sterilization apparatus according to claim 5, characterized in that, A temperature sensor is arranged on the pipeline connecting the holder and the third tubular heat exchanger, an exhaust valve is arranged at the circulating inlet of the third tubular heat exchanger, and a temperature sensor and an exhaust valve are arranged on the pipeline connecting the outlet of the fourth tubular heat exchanger and the circulating inlet of the second tubular heat exchanger.

7. A multi-stage milk sterilization apparatus according to claim 6, characterized in that, An expansion tank is arranged at the inlet of the second centrifugal pump, a soft water source is arranged outside the expansion tank, a manual ball valve is arranged between the second centrifugal pump and the expansion tank, the manual ball valve is arranged in the water circulation channel formed by the first tubular heat exchanger, the third tubular heat exchanger and the second centrifugal pump, and a safety valve, a check valve, a pressure reducing valve, an electromagnetic valve and a manual ball valve are sequentially arranged between the expansion tank and the outside soft water source.

8. A multi-stage milk sterilization apparatus according to claim 7, characterized in that, The third centrifugal pump is provided with an expansion tank, and a soft water source is connected outside the expansion tank.

9. A multi-stage milk sterilization apparatus according to claim 8, characterized in that, The first centrifugal pump is provided with a needle valve, an electromagnetic valve and a manual ball valve, and is connected with the soft water source, so as to cool the first centrifugal pump of the mechanical seal.

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