Sea catching ship catch shelf-type quick-freezing device

Abstract

The invention discloses a sea catching ship catch shelf-type quick-freezing device. The quick-freezing device comprises a shelf frame, a non-freezing liquid inlet main pipe, a non-freezing liquid outlet main pipe and a plurality of hollow quick-freezing flat plates, wherein liquid separating pipes and liquid returning pipes are connected to the two ends of the quick-freezing flat plates, the liquid separating pipes are connected with the non-freezing liquid inlet main pipe, the liquid returning pipes are connected with the non-freezing liquid outlet main pipe, a plurality of partitioning plates are arranged in the quick-freezing flat plates at intervals in the width direction, the partitioning plates partition internal spaces of the quick-freezing flat plates into a plurality of independent non-freezing liquid flow channels, the two ends of the non-freezing liquid flow channels communicate with the liquid separating pipes and the liquid returning pipes through non-freezing liquid inlets and non-freezing liquid outlets correspondingly, a plurality of baffling units are arranged in the non-freezing liquid flow channels at intervals in the length direction of the quick-freezing flat plates, a turbulent flow area is formed in a space between each adjacent baffling units, and at least two turbulent flow balls which are staggered from each other are arranged in each turbulent flow area. The quick-freezing device has the advantages that the structure is compact, the heat transfer coefficient is large, the heat exchange effect is good, the liquid supply flow requirement of a freezing liquid is low, and the freezing and the quick freezing are fast, and the quick-freezing device is very suitable for being applied to a sea catching ship for quick-freezing of catch.

Description

technical field [0001] The invention relates to a ship-mounted quick-freezing device, in particular to a shelf-type quick-freezing device for catches on a sea fishing vessel. Background technique [0002] In pelagic fisheries, in order to ensure the quality of the catch as much as possible, the catch must be quickly sorted, frozen, stored and transported below -18°C after being caught on board. At present, the devices used for quick-freezing fish catches on sea fishing vessels mainly include semi-air-supply and semi-contact quick-freezing devices, strong-ventilated quick-freezing devices and contact-type quick-freezing devices (flat-plate quick-freezing cabinets), among which strong-ventilated quick-freezing devices can be divided into pallet type (Shelf type) quick-freezing device, tunnel-type quick-freezing device and rotary conveyor belt quick-freezing device. Because the pallet type (shelf type) quick-freezing device is relatively simple in structure, easy to operate, a...

AI Technical Summary

Problems solved by technology

This liquid plate quick-freezing device has the following defects: (1) the liquid plate quick-freezing device is provided with a plurality of serpentine passages in the plate, and the antifreeze enters the middle part of multiple liquid supply pipes from the liquid supply main pipe at the same time. Accelerating the freezing speed requires a high flow rate of the cooling liquid, resulting in a large amount of cooling liquid used, which is not conducive to energy saving; (2) The antifreezing liquid is in a laminar flow state when it flows in the serpentine channel (the antifreezing liquid is stratified in parallel flow, mutual non-interference and mixing), the antifreeze at the center of the serpentine channel cannot fully mix with the antifreeze at the edges on both sides, resulting in the inconsistency between the antifreeze at the center of the serpentine channel and the edges on both sides There is a temperature difference between the freezing liquid (cold and hot unevenness), the heat transfer effect is poor, and the utilization efficiency of the cooling capacity of the antifreezing liquid is low; (3) the heat transfer coefficient of the plate is small, and the freezing speed can be further improved

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