CN-224221130-U - Cold and hot water mixing device and material preheating system

CN224221130UCN 224221130 UCN224221130 UCN 224221130UCN-224221130-U

Abstract

The utility model belongs to the field of dairy product processing, and discloses a cold and hot water mixing device which comprises a tank body and guide plates arranged in the tank body, wherein the guide plates are provided with overflow holes, and the overflow holes on two adjacent guide plates are radially staggered to form spiral turbulent flow channels, so that the efficient mixing of cold and hot water can be promoted. The system utilizes a cold-hot water mixing device to realize water temperature for heat exchange, and then is combined with raw milk to be input into a plate heat exchanger for heat exchange, the temperature of the raw milk after heat exchange is higher than 18 ℃, and when the raw milk enters a pasteurizer for sterilization, the steam energy consumption of the pasteurizer can be reduced. The utility model can preheat the raw milk, improves the original temperature of the raw milk entering the pasteurization machine, reduces the steam energy consumption of the pasteurization machine, and is suitable for the production of dairy products or the production line requiring preheating of materials.

Inventors

LI KAN
LIU WENBIN
Ning Zilong
LI GUOQIANG
Ma Xiangchong
WANG LIXIAO

Assignees

君乐宝乳业集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250416

Claims (10)

1. A cold and hot water mixing device is characterized by comprising a tank body, wherein an axially-through hollow flow channel is formed in the tank body, a cold water inlet and a hot water inlet are formed in the top wall or the bottom wall of the tank body, a water outlet is formed in the corresponding bottom wall or the top wall, at least two guide plates are arranged in the tank body at intervals along the axial direction of the tank body, the guide plates are perpendicular to the water flow direction, flow through holes are formed in the guide plates, and the flow through holes in two adjacent guide plates are distributed in a radial dislocation mode to form a spiral turbulent flow channel.
2. The hot and cold water mixing device according to claim 1, wherein six guide plates are arranged in parallel, a plurality of first overflow holes are formed in a first guide plate close to the bottom wall and a second guide plate close to the top wall, one second overflow hole is formed in each of four third guide plates between the first guide plate and the second guide plate, the second overflow holes in two adjacent third guide plates are distributed in a radial dislocation mode, and the diameter of each first overflow hole is smaller than that of each second overflow hole.
3. The hot and cold water mixing device according to claim 2, wherein the diameter of the second overflow hole is 1/4 to 1/3 of the inner diameter of the tank.
4. A hot and cold water mixing apparatus according to any one of claims 1 to 3 wherein a mounting ring for connection to base means is fixedly provided on the side wall of the tank.
5. A material preheating system, comprising a first preheating unit comprising: a hot and cold water mixing device as claimed in any one of claims 1 to 4; The outlet end of the cold water tank is connected with a cold water inlet pipeline of the tank body through a first water pump; the outlet end of the hot water tank is connected with a tank body hot water inlet pipeline through a second water pump; The water inlet of the plate heat exchanger is connected with the water outlet of the tank body through a pipeline, and the discharge port of the plate heat exchanger is used for being connected with sterilizing equipment.
6. The material preheating system according to claim 5, wherein a pressure reducing valve and a check valve are arranged on a pipeline between the first water pump and the tank body, and a proportional control valve and a check valve are arranged on a pipeline between the second water pump and the tank body.
7. The material preheating system according to claim 6, further comprising a circulation line and a reversing valve, wherein one end of the circulation line is connected to the water outlet of the plate heat exchanger, the reversing valve is disposed at one end of the circulation line away from the plate heat exchanger, and the circulation line is connected to the CIP clean water tank or the cold water tank through the reversing valve.
8. The material preheating system according to claim 7, further comprising a central control system and a temperature sensor arranged at the water outlet of the tank body, wherein the temperature sensor, the proportional control valve and the reversing valve are all electrically connected with the central control system.
9. The material preheating system according to claim 8, further comprising a second preheating unit, wherein the second preheating unit comprises the cold and hot water mixing device and the plate heat exchanger according to any one of claims 1 to 4, a temperature sensor is also arranged at a water outlet of the tank body in the second preheating unit and is electrically connected with the central control system, the first water pump is connected with a cold water inlet pipeline of the tank body in the second preheating unit and is connected with a hot water inlet pipeline of the tank body in the second preheating unit, a water inlet of the plate heat exchanger in the second preheating unit is connected with a water outlet of the tank body through a pipeline, a discharge outlet of the plate heat exchanger is connected with the sterilizing equipment, and a water outlet of the plate heat exchanger is connected with the circulating pipeline through a pipeline.
10. The material preheating system according to claim 9, wherein a pressure reducing valve and a one-way valve are arranged on a pipeline between the tank body in the second preheating unit and the first water pump, a proportional control valve and a one-way valve are arranged on a pipeline between the tank body in the second preheating unit and the second water pump, and the proportional control valve is electrically connected with the central control system.

Description

Cold and hot water mixing device and material preheating system Technical Field The utility model belongs to the field of dairy product processing, and particularly relates to a cold and hot water mixing device and a material preheating system. Background The pasteurization machine is food processing equipment based on pasteurization, and the core principle is that pathogens in liquid foods such as milk are killed by controlling the temperature and time, meanwhile, the nutrition components and the flavor are reserved to the maximum extent, and the sterilization temperature is usually controlled to be 95-98 ℃ when milk is sterilized in the factory at present. In current milk processing, raw milk (typically at an initial temperature of 10-18 ℃) in a mix tank is typically delivered directly to a pasteurizer for pasteurization. However, the steam energy consumption of the pasteurizer is inversely proportional to the inlet material temperature difference, i.e. the lower the initial temperature of raw milk entering the pasteurizer, the greater the amount of steam required to heat to the target sterilization temperature. For example, when the raw milk inlet temperature is 10 ℃, the pasteurizer consumes more heat energy to heat up to the sterilization temperature range, and the energy consumption is higher. Disclosure of utility model In order to solve the defects in the prior art, the utility model aims to provide a cold and hot water mixing device and a material preheating system so as to achieve the aim of reducing the steam energy consumption of a pasteurization machine. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: The utility model provides a cold and hot water mixing device which comprises a tank body, wherein a hollow flow passage which is axially communicated is formed in the tank body, a cold water inlet and a hot water inlet are formed in the top wall or the bottom wall of the tank body, a water outlet is formed in the corresponding bottom wall or the top wall, at least two guide plates are arranged in the tank body at intervals along the axial direction of the tank body, the guide plates are perpendicular to the water flow direction, flow through holes are formed in the guide plates, and the flow through holes in the two adjacent guide plates are distributed in a radial dislocation mode to form spiral turbulent flow channels. The flow guide plates are arranged in parallel, a plurality of first flow guide holes are formed in a first flow guide plate close to the bottom wall and a second flow guide plate close to the top wall, a second flow guide hole is formed in each of four third flow guide plates between the first flow guide plate and the second flow guide plate, the second flow guide plates are arranged on two adjacent third flow guide plates in a radial dislocation mode, and the diameter of the first flow guide hole is smaller than that of the second flow guide hole. As a further limitation of the utility model, the diameter of the second overflow hole is 1/4-1/3 of the inner diameter of the tank body. As another limitation of the utility model, a mounting ring for connecting with the base device is fixedly arranged on the side wall of the tank body. The utility model also provides a material preheating system, which comprises a first preheating unit, wherein the first preheating unit comprises: a cold and hot water mixing device; The outlet end of the cold water tank is connected with a cold water inlet pipeline of the tank body through a first water pump; the outlet end of the hot water tank is connected with a tank body hot water inlet pipeline through a second water pump; The water inlet of the plate heat exchanger is connected with the water outlet of the tank body through a pipeline, and the discharge port of the plate heat exchanger is used for being connected with sterilizing equipment. The utility model is limited by that a pressure reducing valve and a one-way valve are arranged on a pipeline between the first water pump and the tank body, and a proportional regulating valve and a one-way valve are arranged on a pipeline between the second water pump and the tank body. The utility model is further limited by the utility model, and the device also comprises a circulating pipeline and a reversing valve, wherein one end of the circulating pipeline is connected with the water outlet of the plate heat exchanger, the reversing valve is arranged at one end of the circulating pipeline far away from the plate heat exchanger, and the circulating pipeline is connected to the CIP clean water tank or the cold water tank through the reversing valve. As a further limitation of the utility model, the utility model also comprises a central control system and a temperature sensor arranged at the water outlet of the tank body, wherein the temperature sensor, the proportional control valve and the reversing valve are electrically connected with the cen