Screw disturbance type flow state ice slurry generating device and application

Abstract

This invention discloses a screw-driven, perturbation-type fluidized ice slurry generation device and its application. The invention includes a power unit for driving screw rotation; a refrigeration unit surrounding an ice-scraping sleeve, within which the screw, with ice-scraping ridges, is disposed; an inlet unit connecting to the bottom of the ice-scraping sleeve; and an outlet unit connecting to the top of the ice-scraping sleeve. The ice-scraping ridges of the screw have a variable pitch structure, and a perturbation module is disposed on the screw. The variable pitch helical channel of this invention can adapt to changes in the volume of fluidized ice, thereby maintaining a uniform and stable ice content along the flow direction, facilitating control of the ice content and preventing blockage.

Description

Technical Field

[0001] This invention belongs to the field of refrigeration technology and relates to a screw-driven perturbation-type fluidized ice slurry generation device and its application. Background Technology

[0002] Flowing ice is a mixture of spherical ice crystals and liquid—ice slurry. It can also form tiny ice crystal particles that look like snow. The principle is to cool a salt solution to a certain temperature, causing water molecules in the solution to crystallize and precipitate into tiny spherical ice crystals, which are free in the solution, thus forming a flowing ice slurry.

[0003] Fluidized ice slurry rapid cooling and preservation technology is completely different from traditional ice-making techniques. Fish is immersed in fluidized ice, which rapidly cools the catch and maintains its temperature at -5℃ to -1℃ for extended periods. Furthermore, the soft texture of fluidized ice does not damage the surface of seafood and provides excellent cooling and preservation. Therefore, fluidized ice slurry preservation can replace traditional ice-carrying methods on fishing boats, reducing ice consumption and offering superior results compared to ice storage.

[0004] The rapid cooling and preservation technology of fluidized ice slurry is a major breakthrough and innovation in traditional cold storage and preservation methods. It has been used in land-based cold chain logistics both domestically and internationally, but its application on ships is still lacking. The reason is that there are many small seafood products and debris mixed together on fishing boats. When the seawater ice slurry is circulated, it will enter the ice scraper, which can easily cause blockage. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a screw-driven perturbation-type fluidized ice slurry generation device and its application.

[0006] The technical solution of this invention is as follows: One aspect of the present invention provides a screw-driven perturbation-type fluidized ice slurry generation device, comprising: The power unit is used to drive the screw to rotate; A refrigeration unit surrounds the ice scraper sleeve, and the screw is provided inside the ice scraper sleeve. The screw has ice scraper screw ribs. The import unit connects to the bottom of the ice scraper sleeve; The outlet unit is connected to the top of the ice scraper sleeve; The ice-scraping screw has a variable pitch structure, and a disturbance module is provided on the screw.

[0007] Preferably, the screw pitch gradually increases from the bottom.

[0008] Preferably, the disturbance module is a column, and there are multiple columns; the multiple columns are distributed in a spiral pattern and located between the spiral edges.

[0009] Preferably, the seawater flowing through the ice-scraping sleeve is diverted at the previous column, then converges again, and then diverts at the next column; the distance between any two columns meets the requirements for diversion, convergence, and diversion.

[0010] Preferably, the disturbance modules on the screw located near the inlet unit are arranged in a horizontal ring to homogenize the ice slurry.

[0011] Preferably, the refrigeration unit uses a refrigerant pipe.

[0012] Preferably, the space between the housing of the generating device and the ice scraper sleeve is filled with insulating foam.

[0013] Preferably, the power unit is a geared motor, which is connected to the screw via a flexible coupling.

[0014] Another aspect of the present invention provides the application of the above-described device in a shipboard setting.

[0015] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the device structure of the present invention.

[0018] Figure 2 for Figure 1 A schematic diagram of the screw section in the diagram.

[0019] Figure 3a This is a schematic diagram of the streamlines of a undisturbed column.

[0020] Figure 3b A schematic diagram of the streamlines after the disturbance column is set. Detailed Implementation

[0021] like Figure 1 and Figure 2As shown, the device in this embodiment mainly consists of a geared motor 1, a motor fixing bell-shaped cover 2, an upper end cover 3, an ice slurry generator housing 4, a variable pitch ice scraping screw 5, a refrigerant pipe 6, an ice scraping sleeve 7, a lower sealing cover 8, an upper bearing 9, a lower bearing 10, a bottom cover 11, a flexible coupling 12, an upper sealing cover 13, a Gladius ring 14-15, a sealing O-ring 16-20, a lower end cover 21, and thermal insulation foam 22.

[0022] In this embodiment, a geared motor is selected as the power unit. The flange face of the geared motor 1 is mounted on the upper end of the motor fixing bell-shaped cover 2 with screws. The motor fixing bell-shaped cover 2 is mounted on the upper end cover 3 with screws. The upper end cover is connected to the ice slurry generator housing 4 and is fastened with screws. A sealing O-ring 16 is radially installed on the upper end cover 3 for sealing against seawater. The ice scraper sleeve 7 is connected to the ice slurry generator housing 4 and fastened. A sealing O-ring 20 is radially installed on the ice scraper sleeve 7.

[0023] In this embodiment, the refrigeration unit is a refrigerant pipe 6, which is wrapped around the outside of the ice scraper sleeve 7.

[0024] In some embodiments, the space between the ice slurry generator housing 4 and the ice scraper sleeve 7 can also be filled with 22 thermal insulation foam.

[0025] The geared motor shaft 1 is connected to the variable pitch ice scraper screw 5 via a flexible coupling 12; the upper end of the variable pitch ice scraper screw 5 is connected to the upper bearing 10; the lower end of the upper bearing 10 is connected to the upper sealing cover 13; the upper sealing cover 13 has an axially mounted O-ring 19 and a radially mounted Glyd ring 14; the lower end of the variable pitch ice scraper screw 5 is connected to the lower bearing 9, and the lower bearing 9 is connected to the lower sealing cover 8; the lower sealing cover 8 has an axially mounted O-ring 17 and a radially mounted Glyd ring 15 for sealing; the lower bearing 9 and the lower sealing cover 8 are connected to the lower end cover 21 below and are fastened with screws; the lower end cover 21 has a radially mounted O-ring 18 for sealing seawater.

[0026] Seawater from the outer container enters the shell of the ice slurry generator 4 through the inlet. The geared motor 1 drives the variable pitch ice scraper screw 5 to rotate and lift the seawater, causing it to continuously flow out of the outlet and back into the container. Due to the action of the refrigerant in the refrigerant pipe 6, the circulating seawater passing through the ice scraper sleeve 7 is continuously cooled. When the continuously circulating seawater reaches a certain crystallization temperature, crystals begin to precipitate on the inner wall of the ice scraper sleeve. The screw edge of the variable pitch ice scraper screw 5 and the ice scraper sleeve 7 have a clearance of only 0.05mm. The screw edge continuously scrapes upward to remove the crystals precipitated on the ice scraper sleeve 7. The mixture of seawater and ice crystals begins to come out of the seawater outlet and return to the container. Due to the continuous circulation, more and more ice crystals are formed in the container, gradually forming ice slurry.

[0027] like Figure 2As shown, the variable pitch disturbance ice scraper screw in this embodiment consists of the following functional parts: upper bearing mating part 101, lower bearing mating part 102, outlet mixing disturbance column 103, variable pitch ice scraper screw rib 104, power connection part 105, intermediate mixing disturbance column 106, and main rod body 107.

[0028] Both the upper bearing mating part 101 and the lower bearing mating part 102 ensure that the entire ice-scraping screw is centered within the ice-scraping sleeve 7 and rotates to scrape ice, thus maintaining the mating clearance between the screw and the ice-scraping sleeve. The power connection part 105 is used to connect the coupling to provide rotational power.

[0029] In this embodiment, there are two types of disturbance modules: an outlet mixing disturbance column 103 and an intermediate mixing disturbance column 106. The intermediate mixing disturbance column 106 is used in conjunction with the variable pitch ice scraper screw ridges to better stir the mixing of ice crystals and seawater, generating irregularly moving flow lines to prevent ice crystal blockage and agglomeration in the flow channel and at the ice crystal outlet. After the ice slurry flows out of the screw, it is once again disturbed and mixed by the horizontally annularly distributed outlet mixing disturbance columns 103, making the ice slurry flow out of the outlet more uniformly.

[0030] like Figure 3b As shown, the first disturbance column can split the seawater containing ice crystals to both sides, and the flow merges between the first and second disturbance columns. The axial velocity V of the upper fluid is... a1 and the axial velocity V of the lower fluid a2 This causes the upper and lower seawater to form a confluence zone and mix with each other; similarly, the second disturbance column causes the seawater containing ice crystals to flow to both sides, and the flow merges between the second and third disturbance columns. The axial velocity V of the upper fluid... a3 and the axial velocity V of the lower fluid a4 This creates a confluence zone between the upper and lower seawater. Because this confluence zone (formed between two disturbance columns, so the distance between the columns cannot be too small) allows ice crystals to diffuse better in the seawater, improving the uniformity of ice crystals and the quality of fluid ice production. It also prevents the formation of excessively large ice blocks that could cause blockages. This is based on... Figure 3a In contrast, this design did not create a confluence zone, thus failing to improve the production quality of fluid ice.

[0031] The ice-slurry enters the variable-pitch spiral channel from below, scraping ice crystals off the wall. As the ice crystals move upward along the spiral channel, they are scraped into the seawater, gradually increasing the ice content and volume of the seawater. The variable-pitch spiral channel can adapt to the changing volume of the flowing ice, thus maintaining a uniform and stable ice content along the flow direction. This facilitates control of the ice content and prevents blockages.

[0032] According to the technical solution of this embodiment, the fluid ice slurry generating device can be installed on fishing vessels, including but not limited to trawlers, trap and pot fishing vessels, and gillnet fishing vessels.

[0033] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the invention.

[0034] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations to the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. A screw-driven perturbation-type fluidized ice slurry generation device, comprising: The power unit is used to drive the screw to rotate; A refrigeration unit surrounds the ice scraper sleeve, and the screw is provided inside the ice scraper sleeve. The screw has ice scraper screw ribs. The import unit connects to the bottom of the ice scraper sleeve; The outlet unit is connected to the top of the ice scraper sleeve; Its features are, The ice-scraping screw has a variable pitch screw edge structure. A disturbance module is provided on the screw. The disturbance module is a column, and there are multiple columns. The multiple columns are distributed in a spiral and are located between the screw edges. The disturbance modules on the screw located near the outlet unit are arranged in a horizontal ring to homogenize the ice slurry.

2. A screw agitated ice slurry generating device according to claim 1, characterized in that The pitch of the screw gradually increases from the bottom.

3. The screw-driven perturbation-type fluidized ice slurry generating device according to claim 2, characterized in that: Seawater flowing through the ice-scraping sleeve first converges after being split by the previous column, and then splits again by the next column; the distance between any two columns meets the requirements for splitting, converging, and splitting.

4. The screw-driven perturbation-type fluidized ice slurry generating device according to claim 1, characterized in that: The refrigeration unit uses refrigerant pipes.

5. The screw-driven perturbation-type fluidized ice slurry generating device according to claim 4, characterized in that: The space between the housing of the generating device and the ice scraper sleeve is filled with insulating foam.

6. The screw-driven perturbation type fluidized ice slurry generating device according to claim 1, characterized in that: The power unit is a geared motor, which is connected to the screw via a flexible coupling.

7. The application of the screw-driven perturbation-type fluidized ice slurry generating device according to any one of claims 1-6 in a shipboard application.

8. The application according to claim 7, characterized in that, The vessels mentioned include fishing vessels used for trawls, traps, and gillnets.

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