CN210432759U

CN210432759U - Pasteurization system

Info

Publication number: CN210432759U
Application number: CN201820978340.5U
Authority: CN
Inventors: 闫国栋; 刘绍军; 赵振中
Original assignee: Guangzhou Pucheng Dairy Co ltd
Current assignee: Guangzhou Pucheng Dairy Co ltd
Priority date: 2018-06-22
Filing date: 2018-06-22
Publication date: 2020-05-01
Anticipated expiration: 2028-06-22

Abstract

The utility model provides a pasteurization system, this system include a balance tank, the balance tank both ends are connected with the pan feeding end of input milk and the milk pipeline that the output milk carries out processing and disinfecting, the system is still including degasification portion, homogeneity portion, heat preservation portion and the heat exchange portion of disinfecting, the milk pipeline is through degasification portion, homogeneity portion, heat preservation portion and the heat exchange portion of disinfecting as required, gets into next step through the discharge end. The utility model relates to an effective utilization waste heat reduces the sterilization system energy consumption to carry out the system that different specifications disinfected to milk according to different demands, this system is energy-concerving and environment-protective, and degree of automation is high, has improved whole quality and the efficiency of disinfecting, and reduce cost.

Description

Pasteurization system

Technical Field

The present invention relates to milk processing systems, and more particularly to a pasteurization system.

Background

The pasteurization comprises heating the mixed raw materials to 95 + -2 deg.C, maintaining the temperature for 300S, and rapidly cooling to 4-5 deg.C. Because the common bacterial dead points are all at the temperature of 85 ℃ and meet the time of 300S, the pathogenic bacteria and most of nonpathogenic bacteria in the mixed raw materials can be killed after the mixed raw materials are treated by the method; the mixed raw materials are heated and sterilized for a long time in a heat-preservation tank, and then cooled to 4-6 ℃ to prevent the growth of microorganisms.

Within a certain temperature range, the lower the temperature, the slower the bacterial reproduction; the higher the temperature, the faster the propagation (generally the suitable temperature for the growth of the microorganisms is from 28 ℃ to 37 ℃). However, if the temperature is too high, the bacteria will die. Different bacteria have different optimal growth temperatures and heat and cold resistance. Pasteurization actually utilizes the characteristic that pathogens are not very heat-resistant, and treats the pathogens with proper temperature and heat preservation time to completely kill the pathogens.

The pasteurization procedures used today are very diverse. The "low temperature long time" (LTLT) process is a batch process and is only used today by small dairy plants to produce some cheese products. The "high temperature short time" (HTST) process is a "flow" process, usually carried out in plate heat exchangers, and is now widely used in the production of potable milk. The product obtained in this way is not sterile, i.e. still contains microorganisms, and requires refrigeration during storage and handling. "quick pasteurization" is mainly applied to produce yoghurt dairy products. There are two main types of pasteurization methods in common use internationally:

one is to heat milk to 95 + -2 deg.C for 300 seconds. By adopting the method, various growth-type pathogenic bacteria in the milk can be killed, the sterilization efficiency can reach 97.3% -99.9%, only partial thermophilic bacteria, heat-resistant bacteria, spores and the like are remained after sterilization, but most of the bacteria are lactic acid bacteria which are not harmful to human bodies but are beneficial to health.

In the second method, the sugar solution is heated to 120 +/-2 ℃, the temperature is kept for 15-16 s, the sterilization time is shorter, and the working efficiency is higher. However, the basic principle of sterilization is that pathogenic bacteria can be killed, and the temperature is too high, so that more nutrition is lost.

Due to the fact that the pasteurization system in the prior art has accurate requirements on temperature, the temperature of milk needs to be regulated and controlled in multiple parts, and therefore the problem of large energy consumption is brought. The extremely high energy consumption not only produces a large amount of waste gas and pollutes the environment, but also improves the processing and production cost, and is not beneficial to the benign operation of enterprises.

Disclosure of Invention

The present invention provides a pasteurization system that solves the problems of the prior art.

The technical scheme of the invention is realized as follows:

the pasteurization system comprises a balance tank, wherein the two ends of the balance tank are connected with a feeding end for inputting milk and a milk pipeline for outputting the milk to process and sterilize, the system also comprises a degassing part, a homogenizing part, a heat preservation sterilizing part and a heat exchange part, and the milk pipeline passes through the degassing part, the homogenizing part, the heat preservation sterilizing part and the heat exchange part as required and enters the next step through a discharging end.

As a preferable scheme of the invention, the initial end of the milk pipeline is connected with a milk discharge pump.

As a preferable scheme of the invention, the heat exchange part comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger and a fifth heat exchanger which are sequentially formed by arranging a plurality of bucker plates side by side.

In a preferred embodiment of the present invention, the milk line is discharged from the balancing tank through the discharge end after passing through the second heat exchanger, the degassing part, the homogenizing part, the third heat exchanger, the fourth heat exchanger, the heat-preserving and sterilizing part, the third heat exchanger, the second heat exchanger, and the first heat exchanger in this order.

As a preferable aspect of the present invention, the system includes a hot water circulation line passing through the fourth heat exchanger and the fifth heat exchanger.

As a preferred aspect of the present invention, the system includes a steam circulation line passing through the fifth heat exchanger.

As a preferred aspect of the present invention, the system includes an ice water line passing through the first heat exchanger.

As a preferable scheme of the invention, the heat-preservation sterilization part comprises two multi-effect sterilization pipes and a single-effect sterilization pipe which are connected in parallel, a first sterilization valve and a second sterilization valve are fixed at nodes at two ends of a pipeline in which the multi-effect sterilization pipes and the single-effect sterilization pipe are connected in parallel, and the heat-preservation sterilization part is arranged in the middle of a milk pipeline through the first sterilization valve and the second sterilization valve at the two ends.

In a preferred embodiment of the present invention, the material inlet portion of the degassing portion is provided with a degassing valve, and the degassing portion is provided with a degassing tank for assisting milk in reducing foam.

Advantageous effects

The invention provides a pasteurization system, which comprises a balance tank, wherein the two ends of the balance tank are connected with a feeding end for inputting milk and a milk pipeline for outputting the milk to perform processing and sterilization, the system also comprises a degassing part, a homogenizing part, a heat-preservation sterilization part and a heat exchange part, and the milk pipeline passes through the degassing part, the homogenizing part, the heat-preservation sterilization part and the heat exchange part as required and enters the next step through a discharging end. The invention relates to a system which effectively utilizes waste heat, reduces the energy consumption of a sterilization system and sterilizes milk in different specifications according to different requirements.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the connection structure of the present invention.

The system comprises a balance tank 1, a milk pipeline 2, a feeding end 21, a milk discharging pump 22, a discharging end 23, a first heat exchanger 3, a second heat exchanger 4, a third heat exchanger 5, a fourth heat exchanger 6, a fifth heat exchanger 7, a hot water circulating pipeline 8, a steam circulating pipeline 9, a heat-preservation sterilization part 10, a multi-effect sterilization pipe 101, a single-effect sterilization pipe 102, a first sterilization valve 103, a second sterilization valve 104, a degassing part 11, a degassing valve 111, a homogenizing part 12 and an ice water pipeline 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in figure 1, the pasteurization system comprises a balance tank 1, wherein a feeding end 21 for inputting milk and a milk pipeline 2 for outputting the milk to perform processing and sterilization are connected with two ends of the balance tank 1, the system also comprises a degassing part 11, a homogenizing part 12, a heat-preservation sterilization part 10 and a heat exchange part, and the milk pipeline 2 passes through the degassing part 11, the homogenizing part 12, the heat-preservation sterilization part 10 and the heat exchange part as required and enters the next step through a discharging end 23.

The initial end of the milk line 2 is connected to a milk discharge pump 22.

The heat exchange part comprises a first heat exchanger 3, a second heat exchanger 4, a third heat exchanger 5, a fourth heat exchanger 6 and a fifth heat exchanger 7 which are sequentially formed by arranging a plurality of killer plates side by side.

The milk pipeline 2 starts from the balancing tank 2, passes through the second heat exchanger 4, the degassing part 11, the homogenizing part 12, the third heat exchanger 5, the fourth heat exchanger 6, the heat preservation and sterilization part 10, the third heat exchanger 5, the second heat exchanger 4 and the first heat exchanger 3 in sequence, and then is discharged through the discharging end 23.

The system comprises a hot water circulation line 8, the hot water circulation line 8 passing through the fourth heat exchanger 6 and the fifth heat exchanger 7.

The system comprises a steam circulation line 9, which passes through the fifth heat exchanger 7.

The system comprises an ice water line 13, the ice water line 13 passing through the first heat exchanger 3.

The heat-preservation sterilization part 10 comprises a multi-effect sterilization pipe 101 and a single-effect sterilization pipe 102 which are connected in parallel, a first sterilization valve 103 and a second sterilization valve 104 are fixed at two end nodes of a pipeline formed by connecting the multi-effect sterilization pipe 101 and the single-effect sterilization pipe 102 in parallel, and the heat-preservation sterilization part 10 is arranged in the middle of the milk pipeline 2 through the first sterilization valve 103 and the second sterilization valve 104 at two ends.

The material inlet part of the degassing part 11 is provided with a degassing valve 111, and the degassing part 11 is internally provided with a degassing tank for helping milk to reduce foam.

The sterilization pipeline is the prior art, the specific structure is not described, and the milk pipeline 2 in the system is inserted with a circulation structure, a valve structure and a pump structure, so that the milk conveying speed can be increased or reduced at different positions.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. Pasteurization system, this system include a balance tank (1), balance tank (1) both ends are connected with pan feeding end (21) and the milk pipeline (2) that the output milk of input milk carries out processing and disinfects, its characterized in that, the system is still including degasification portion (11), homogeneity portion (12), heat preservation sterilization portion (10) and heat exchange portion, milk pipeline (2) are through degasification portion (11), homogeneity portion (12), heat preservation sterilization portion (10) and heat exchange portion as required, get into next step through discharge end (23), heat exchange portion includes that a plurality of pasteurizing machine slab place side by side, first heat exchanger (3), second heat exchanger (4), third heat exchanger (5), fourth heat exchanger (6) and fifth heat exchanger (7) that form in order.

2. Pasteurization system according to claim 1, characterized in that the initial end of the milk line (2) is connected to a milk discharge pump (22).

3. The pasteurization system according to claim 1, characterized in that the milk line (2) starts from the balancing tank (1), passes through the second heat exchanger (4), the degassing section (11), the homogenizing section (12), the third heat exchanger (5), the fourth heat exchanger (6), the heat-preserving and sterilizing section (10), the third heat exchanger (5), the second heat exchanger (4) and the first heat exchanger (3) in sequence, and is discharged through the discharge end (23).

4. Pasteurization system according to claim 1, characterized in that it comprises a hot water circulation line (8), the hot water circulation line (8) passing through the fourth heat exchanger (6) and the fifth heat exchanger (7).

5. Pasteurization system according to claim 1, characterized in that the system comprises a steam circulation line (9) which passes through a fifth heat exchanger (7).

6. Pasteurization system according to claim 1, characterized in that it comprises an ice-water line (13), said ice-water line (13) passing through said first heat exchanger (3).

7. The pasteurization system as claimed in claim 1, characterized in that the heat-preserving sterilization part (10) comprises two multi-effect sterilization pipes (101) and a single-effect sterilization pipe (102) which are connected in parallel, a first sterilization valve (103) and a second sterilization valve (104) are fixed at two end nodes of the parallel pipeline of the multi-effect sterilization pipes (101) and the single-effect sterilization pipe (102), and the heat-preserving sterilization part (10) is arranged in the middle of the milk pipeline (2) through the first sterilization valve (103) and the second sterilization valve (104) at two ends.

8. Pasteurization system according to claim 1, characterized in that the degassing section (11) is provided with a degassing valve (111) in the feed section and in that the degassing section (11) is provided with a degassing tank which helps to reduce the foaming of the milk.