CN204865057U - Liquid freeze concentration device - Google Patents

Abstract

The utility model relates to a liquid freezing and concentrating device. The purpose of the utility model is to provide a high-efficiency, compact and easy-to-move liquid freezing and concentrating device, which includes an ice maker and a recrystallization tank located below the ice maker, the inner cavity of the ice maker and the recrystallization tank The inner cavity of the tank is connected; the inner cavity of the ice maker is provided with a liquid distribution pipe supplied by the recrystallization tank, and the pipe wall of the liquid distribution pipe is provided with several through holes facing the inner wall of the ice maker at intervals; The interior of the recrystallization tank is provided with a stirrer, and the side wall of the recrystallization tank is provided with an ice discharge outlet. The utility model has the advantages of: 1) simple and compact structure, easy to move and lift; 2) high working efficiency; 3 ) effectively prevents the scraper from being stuck due to too thick and large ice crystals, and ensures that the scraper can scrape off the ice layer more easily.

Description

A liquid freeze concentration device

technical field

The utility model relates to the processing field, in particular to a liquid freezing and concentrating device.

Background technique

Most of the existing freeze concentration equipment is composed of a scraper heat exchanger, a scraper heat exchanger and a crystal growth tank, etc., because the liquid ammonia in the scraper heat exchanger needs to be in contact with brine or ethylene glycol and other refrigerants to generate Ice crystals, low heat transfer efficiency, the evaporation temperature of liquid ammonia is -33.3°C, and the temperature difference between the material and the material is large, and a thick ice layer is easily formed on the inner wall of the scraped surface heat exchanger, and the scraper is easily damaged during operation. In addition, the existing freezing The structure of the enrichment equipment is relatively complex, not compact enough, heavy, difficult to move and occupies a large area.

Contents of the invention

The purpose of the utility model is to provide a high-efficiency, compact liquid freezing and concentrating device which is convenient for moving and hoisting.

The purpose of this utility model is achieved through the following technical solutions: a liquid freezing and concentrating device, which includes an ice maker and a recrystallization tank located below the ice maker, and the inner cavity of the ice maker is connected to the inner cavity of the recrystallization tank Pass;

The inner cavity of the ice maker is provided with a liquid distribution pipe supplied by the recrystallization tank, and the pipe wall of the liquid distribution pipe is provided with several through holes facing the inner wall of the ice maker at intervals; the inside of the recrystallization tank A stirrer is provided, and an ice discharge outlet is provided on the side wall of the recrystallization tank.

Compared with the prior art, the utility model has the following advantages: 1) The utility model has a simple and compact structure, and is convenient for moving and hoisting. 2) The heat exchange efficiency and work efficiency of the utility model are high; in the ice making process, the liquid ammonia or Freon evaporator directly exchanges with the material without heat transfer between refrigerants, which greatly improves the heat exchange efficiency and correspondingly improves the work efficiency. 3) The utility model adopts a liquid distribution pipe to spray the liquid onto the inner surface of the evaporator, forming a thin layer of ice crystals on the inner wall of the evaporator, effectively avoiding the scraper being stuck due to too thick and too large ice crystals, and ensuring that the scraper is easier to remove the ice layer scraped off.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Fig. 2 is a schematic structural view of the liquid distribution pipe of the present invention.

Description of labels: 1 evaporator, 2 scraper, 3 main shaft, 4 liquid distribution pipe, 5 recrystallization tank, 6 stirring rod, 7 ice discharge outlet, 8 opening B, 9 maintenance inlet, 10 circulation pump, 11 motor A, 12 pipeline , 13 stirring blades, 14 motor B, 15 valves.

Detailed ways

Below in conjunction with description accompanying drawing and embodiment the utility model content is described in detail:

As shown in Figure 1: a kind of liquid freezing and concentrating device, it comprises ice maker and the recrystallization tank 5 that is positioned at the ice maker below, and the inner chamber of described ice maker communicates with the inner cavity of recrystallization tank 5; The bottom of the ice maker is provided with an opening A for ice crystal discharge, and the top of the recrystallization tank 5 is provided with an opening B8 for ice crystals to enter the tank body and corresponds to the position of the opening A; the inner cavity of the ice maker and the recrystallization tank 5 The lumen communicates with opening B through opening A.

The inner cavity of the ice maker is provided with a liquid distribution pipe 4 supplied by the recrystallization tank 5. The pipe wall of the liquid distribution pipe 4 is provided with several through holes facing the inner wall of the ice maker at intervals; the liquid distribution pipe sprays the liquid The ice is sprayed onto the inner wall of the ice maker to make ice, so that the ice crystals can be scraped off more easily, and it can prevent the ice crystals from being too large and thick and jamming the ice scraping device.

The inside of the recrystallization tank 5 is provided with a stirrer, and the side wall of the recrystallization tank 5 is provided with an ice discharge outlet 7 .

The utility model is a system integrating ice making, recrystallization concentration, and ice discharge. The liquid lifted from the recrystallization tank is sprayed onto the inner wall of the ice maker through the through hole on the liquid distribution pipe 4. Under the action, it flows down along the wall, and part of the liquid is frozen, forming a thin layer of ice crystals on the inner wall of the ice maker. After the ice crystals are scraped off by the ice scraping device, the ice crystals and unfrozen liquid form an ice-liquid mixture, and the ice-liquid mixture flows from The opening A at the bottom of the ice maker is discharged, and then falls into the recrystallization tank 5 from the opening B8. After the ice crystals enter the recrystallization tank 5, the ice crystals float on the upper layer of the liquid, and the ice crystals are recrystallized under the action of the agitator. According to Oster Wald effect, the ice crystals in the recrystallization tank continue to grow into larger pure ice, and the liquid is concentrated at the same time. Under the liquid levels of different heights, the pure ice crystals are discharged through the ice discharge outlets 7 of different heights on the side of the recrystallization tank 5 .

The ice maker is an evaporator 1, the evaporator is in an inverted cylindrical shape, and the inner wall of the evaporator below the liquid distribution pipe is the ice making surface.

The evaporator 1 is a liquid ammonia or Freon evaporator. The utility model adopts the liquid ammonia or Freon evaporator directly as the cold source, which greatly improves the heat exchange efficiency.

As shown in Figure 2: the liquid distribution pipe 4 is an annular pipe;

The outlet end of the liquid distribution pipe 4 is provided with a valve 15 .

When the utility model is working, the valve is closed, so that all the liquid is sprayed onto the inner wall of the evaporator through the through hole, and it is opened when the work is finished, so that the cleaning liquid can circulate for cleaning;

The inner cavity of the ice maker is also provided with an ice scraping assembly located below the liquid distribution pipe 4, and the ice scraping assembly is composed of a main shaft 3 located in the center of the ice maker, a scraper 2, and a motor A11 that drives the main shaft 3 to rotate. The upper end of the main shaft 3 is connected to the motor A11, the scraper 2 is arranged on the main shaft 3 and located below the liquid distribution pipe 4, and the outer end of the scraper 2 is attached to the inner wall of the ice maker. The motor A is also connected with the speed reducer.

The recrystallization tank 5 communicates with the liquid distribution pipe 4 through a pipeline 12 with a circulation pump 10, the bottom or sidewall of the recrystallization tank 5 communicates with one end of the pipeline 12, and the other end of the pipeline 12 One end communicates with the liquid distribution pipe 4 .

The pipeline with the circulation pump can pump the liquid in the recrystallization tank into the liquid distribution pipe.

The top of the recrystallization tank 5 is also provided with a maintenance inlet 9 for observation and maintenance.

Described stirrer is made up of stirring rod 6, stirring blade 13 and the motor B14 that drives stirring rod 6 to rotate in the recrystallization tank 5, and the upper end of described stirring rod 6 is connected with motor B14, and several stirring blades 13 automatically The upper and lower layers are arranged on the stirring rod 6 .

Under the proper stirring of this multi-layer stirrer, the ice crystals and liquid can act more fully to realize recrystallization. The motor B14 is also connected with the speed reducer.

The ice discharge outlets 7 are arranged at different heights on the side wall of the recrystallization tank 5 .

Pure ice at different heights in the recrystallization tank can be discharged through ice discharge outlets at different heights on the side of the tank.

Claims (10)

1. A liquid freeze concentration device is characterized in that: it comprises an ice maker and a recrystallization tank (5) positioned below the ice maker, the inner cavity of the ice maker and the recrystallization tank (5) Connected; The inner cavity of the ice maker is provided with a liquid distribution pipe (4) supplied by the recrystallization tank (5), and the pipe wall of the liquid distribution pipe (4) is provided with several through holes facing the inner wall of the ice maker at intervals ; The inside of the recrystallization tank (5) is equipped with a stirrer, and the side wall of the recrystallization tank (5) is provided with an ice discharge outlet (7). 2. The liquid freezing and concentrating device according to claim 1, characterized in that: the ice maker is an evaporator (1), the evaporator is in an inverted cylindrical shape, and the evaporator is located below the liquid distribution pipe The inner wall surface is the ice making surface. 3. The liquid freezing and concentrating device according to claim 2, characterized in that: the evaporator (1) is a liquid ammonia or Freon evaporator. 4. The liquid freezing and concentrating device according to claim 2, characterized in that: the liquid distribution pipe (4) is an annular pipe. 5. The liquid freezing and concentrating device according to claim 4, characterized in that: the outlet end of the liquid distribution pipe (4) is provided with a valve (15). 6. The liquid freezing and concentrating device according to claim 1, characterized in that: the inner cavity of the ice maker is also provided with an ice scraping assembly located below the liquid distribution pipe (4), and the ice scraping assembly is arranged on The main shaft (3) in the center of the ice maker, the scraper (2) and the motor A (11) that drives the main shaft (3) to rotate, the upper end of the main shaft (3) is connected to the motor A (11), and the scraper (2) Located on the main shaft (3) and below the liquid distribution pipe (4), the outer end of the scraper (2) abuts against the inner wall of the ice maker. 7. The liquid freezing and concentrating device according to claim 1, characterized in that: a pipeline (12) with a circulation pump (10) is passed between the recrystallization tank (5) and the liquid distribution pipe (4) ), the bottom or side wall of the recrystallization tank (5) is communicated with one end of the pipeline (12), and the other end of the pipeline (12) is communicated with the liquid distribution pipe (4). 8. The liquid freezing and concentrating device according to claim 1, characterized in that: the top of the recrystallization tank (5) is also provided with a maintenance inlet (9) for observation and maintenance. 9. according to the described liquid freezing and concentrating device of any one of claim 1-8, it is characterized in that: described agitator consists of stirring rod (6), stirring blade (13) and It consists of a motor B (14) that drives the stirring rod (6) to rotate. The upper end of the stirring rod (6) is connected to the motor B (14), and several stirring blades (13) are layered on the stirring rod from top to bottom. (6) up. 10. The liquid freezing and concentrating device according to claim 9, characterized in that: the ice discharge outlets (7) are arranged at different heights on the side wall of the recrystallization tank (5).