Unfreezing device for processing of tilapia

By using a guide plate and components in a coordinated design, uniform thawing of tilapia was achieved, solving the problems of uneven thawing and fish damage in traditional devices, and improving the integrity of the fish and the yield.

CN224670743UActive Publication Date: 2026-08-25茂名市供销渔业有限公司
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Patent Information

Application Number
CN202522176052.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-15
Publication Date
2026-08-25
Estimated Expiration
2035-10-15

AI Technical Summary

Technical Problem

Existing tilapia thawing devices suffer from uneven thawing and fish damage during transport, especially mechanical turning which causes scales to fall off and the skin to break.

Method used

The design employs a combination of baffles, interception components, thawing components, liquid collection components, and guiding components. It utilizes gravity and water flow to achieve natural turning of the fish and uniform thawing, avoiding mechanical forced turning. Wastewater is collected through the through holes on the baffles and the liquid collection components, ensuring the continuity and integrity of the thawing process.

Benefits of technology

This method achieves uniform thawing of tilapia, reduces scale loss and skin damage, increases yield, and ensures the integrity of the fish and the continuity of the thawing process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a thawing device of tilapia processing, including support frame still including the deflector that makes fish body slide and the deflector of surface of installation in support frame, the baffle of fixed connection on deflector, the intercepting assembly of installation on baffle and intercept fish body, thawing assembly of installation on baffle, the liquid collecting assembly of installation on support frame and the guide assembly of installation on liquid collecting assembly, fish body moves on deflector, and thawing assembly is used for spraying water to fish body, and the wastewater of thawing is collected through liquid collecting assembly, and the fish body of thawing is finished and passes through the guide assembly empty part moisture while from the liquid collecting assembly top. The deflector of ladder form makes fish body slide under the action of gravity and turns over naturally, ensures that each surface of fish body can evenly receive thawing water, effectively eliminates "thawing dead angle", avoids the forced turning of rigid parts such as mechanical arm, prong in whole process, maximum degree reduces muscle tissue damage, and can guarantee the continuity of thawing process.
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Description

Technical Field

[0001] This utility model relates to the field of fish processing technology, specifically a thawing device for tilapia processing. Background Technology

[0002] Tilapia is an important aquatic product worldwide. Before being processed into products such as fish fillets, frozen fish must be thawed. Thawing equipment is the key to this process. Its goal is to uniformly and quickly raise the core temperature of the fish to above the freezing point suitable for processing, while maximizing the freshness of the fish meat.

[0003] In existing technologies, although conveyor belts can achieve continuous operation, the fish's posture is fixed during the conveying process, resulting in significant differences in the thawing rate between the lower surface in contact with the conveyor belt and the exposed upper surface and sides, forming "thawing dead zones" and making it impossible to guarantee uniformity. To solve the problem of turning, mechanical turning mechanisms are usually used. However, the tilapia softens during thawing, and rigid turning parts such as robotic arms and forks are very likely to cause scales to fall off, skin to break, or muscle tissue to be deformed by pressure, seriously affecting product quality and yield. Utility Model Content

[0004] The purpose of this invention is to provide a thawing device for tilapia processing, so as to solve the problems of insufficient thawing and easy damage to the fish mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a thawing device for tilapia processing, including a support frame, a guide plate mounted on the support frame to allow the fish to slide and flip, a baffle fixedly connected to the guide plate, an interception component mounted on the baffle to intercept the fish, a thawing component mounted on the baffle, a liquid collection component mounted on the support frame, and a guide component mounted on the liquid collection component. When the fish moves on the guide plate, the thawing component sprays water onto the fish, and the liquid collection component collects the wastewater generated during thawing. After thawing, the fish passes over the liquid collection component while letting some water drain through the guide component.

[0006] In a preferred embodiment of this technical solution, the guide plate is provided with through holes, and the through holes are evenly distributed on the guide plate in a linear array. The water generated by the thawing of the fish falls into the liquid collection component through the through holes.

[0007] Based on the preferred embodiment of this technical solution, the interception component includes an electric telescopic rod installed on the baffle and an interception plate installed at the output end of the electric telescopic rod. The interception plate, together with the guide plate, forms a temporary fish storage tank.

[0008] In the preferred embodiment of this technical solution, the guide plate and the baffle are provided with grooves at corresponding positions on the interceptor plate, and the interceptor plate slides inside the grooves.

[0009] Based on the preferred embodiment of this technical solution, the thawing assembly includes a support rod mounted on a baffle, a delivery pipe mounted on the support rod, a flange mounted on the delivery pipe, and a nozzle. The flange is connected to an external water supply device, which delivers thawing water to the nozzle through the delivery pipe, thereby spraying the thawing water onto the fish through the nozzle.

[0010] According to the preferred embodiment of this technical solution, the liquid collection assembly includes a collection plate mounted on a support frame, a collection tank mounted on the collection plate, and a drain outlet. The collection plate guides the liquid generated during thawing into the collection tank for collection.

[0011] In a preferred embodiment of this technical solution, the guiding component includes a guide plate installed between the guide plate and the collection tank, and a guide groove opened on the guide plate, through which water from the fish body flows into the collection tank.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The stepped baffles allow the fish to slide and turn naturally under gravity, ensuring that all surfaces of the fish receive thawing water evenly. This effectively eliminates "thawing dead zones" and avoids forced turning by rigid components such as robotic arms and forks. This minimizes scale loss, skin damage, and muscle tissue injury, ensuring the integrity of the fish and the yield, while also guaranteeing the continuity of the thawing process.

[0013] 2. A temporary fish storage tank is formed by using interceptor plates and guide plates, allowing the fish to stay in the area for a sufficient time to receive even spray thawing and fully thaw, preventing the fish from sliding too quickly on the guide plates and failing to thaw completely. Attached Figure Description

[0014] Figure 1 A schematic diagram of one embodiment of the thawing device for tilapia processing according to this utility model; Figure 2 This is a schematic diagram of the interception component structure of this utility model; Figure 3 This is a cross-sectional view of the baffle and liquid collection assembly of this utility model; Figure 4 This is a schematic diagram of the defrosting component structure of this utility model; Figure 5 This is a schematic diagram of the liquid collection component structure of this utility model; Figure 6 This is a schematic diagram of the guide component structure of this utility model.

[0015] In the diagram: 21, support frame; 22, guide plate; 23, baffle; 31, electric telescopic rod; 32, intercepting plate; 41, support rod; 42, delivery pipe; 43, flange; 44, nozzle; 51, collection plate; 52, collection tank; 53, drain port; 61, guide plate; 62, guide groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1 - Figure 6 This utility model provides an embodiment of a tilapia thawing device, including a support frame 21, a guide plate 22 mounted on the support frame 21 for sliding and flipping the fish, a baffle 23 fixedly connected to the guide plate 22, an interception component mounted on the baffle 23 to intercept the fish, a thawing component mounted on the baffle 23, a liquid collection component mounted on the support frame 21, and a guide component mounted on the liquid collection component. When the fish moves on the guide plate 22, the thawing component sprays water onto the fish, and the liquid collection component collects the wastewater generated during thawing. The thawed fish passes over the liquid collection component while some water is drained through the guide component. The guide plate 22 has a certain inclination angle and is made of a low-friction coefficient material, such as food-grade stainless steel or engineering plastic. The fish slides along its surface and rolls naturally under gravity, achieving flipping without mechanical force and effectively avoiding damage to the fish. All components work together to form a continuous thawing-draining-collection process.

[0018] Please see Figure 2 A further solution based on this embodiment is as follows: the guide plate 22 is provided with through holes, and the through holes are evenly distributed in a linear array on the guide plate 22. The water generated by the thawing of the fish falls into the liquid collection component through the through holes. The evenly distributed through holes ensure that the ice-water mixture and wastewater generated during the thawing process can be discharged in time, avoiding the accumulation of water to soak the thawed fish, thereby preventing the fish meat from being affected by overhydration and affecting the taste and quality. At the same time, it also keeps the surface of the guide plate 22 relatively dry and reduces the sliding resistance of the fish.

[0019] Please see Figure 1 - Figure 2A further solution based on this embodiment is as follows: the interception component includes an electric telescopic rod 31 installed on the baffle 23 and an interception plate 32 installed at the output end of the electric telescopic rod 31. The interception plate 32, together with the guide plate 22, forms a temporary fish storage tank. The electric telescopic rod 31 can be programmed to periodically extend and retract the interception plate 32 to achieve batch and intermittent interception of fish. This ensures that each batch of fish has enough time to stay in a specific area to receive uniform spray thawing, realizing the combination of assembly line operation and batch processing, and improving the uniformity of thawing.

[0020] Please see Figure 2 A further solution based on this embodiment is as follows: the guide plate 22 and the baffle 23 are provided with grooves at corresponding positions of the interceptor plate 32, and the interceptor plate 32 slides inside the grooves. The grooves provide precise guidance and limits for the lifting and lowering movement of the interceptor plate 32, ensuring that it can smoothly insert into or detach from the surface of the guide plate 22, forming an effective closed area with the guide plate 22, preventing the fish from sliding out from the side in the interception state, while ensuring the reliability of the action.

[0021] Please see Figure 1 , Figure 4 A further solution based on this embodiment is as follows: The defrosting assembly includes a support rod 41 installed on the baffle 23, a delivery pipe 42 installed on the support rod 41, a flange 43 and a nozzle 44 installed on the delivery pipe 42. The flange 43 is connected to an external water supply device, which delivers defrosting water to the nozzle 44 through the delivery pipe 42, thereby spraying the defrosting water onto the fish through the nozzle 44. The nozzle 44 can be a fan-shaped or cone-shaped atomizing nozzle, which is evenly distributed on the delivery pipe 42 to ensure that the spray range covers the entire effective area of ​​the guide plate 22. The flange 43 is easy to connect to a temperature-controlled water supply system, which can provide defrosting water at a suitable temperature, achieve gentle and uniform defrosting, and reduce the impact of temperature shock on the texture of the fish meat.

[0022] Please see Figure 1 , Figure 3 , Figure 5 A further solution based on this embodiment is as follows: the liquid collection assembly includes a collection plate 51 mounted on the support frame 21, a collection tank 52 mounted on the collection plate 51, and a drain port 53. The liquid generated during thawing is guided by the collection plate 51 to the inside of the collection tank 52 for collection. The collection plate 51 is usually designed as a funnel or has a guide slope, which can efficiently collect the wastewater falling from the through hole of the guide plate 22 into the collection tank 52. The drain port 53 can be connected to an external pipe for centralized treatment or recycling of wastewater, maintaining a clean and hygienic working environment and meeting the requirements of food processing.

[0023] Please see Figure 1 , Figure 6A further solution based on this embodiment is as follows: the guiding component includes a guide plate 61 installed between the guide plate 22 and the collection tank 52 and a guide groove 62 opened on the guide plate 61. The water on the fish body flows into the collection tank 52 through the guide groove 62. The guide plate 61 serves as a channel for the fish body to slide out after thawing. When the fish body slides through the guide groove 62, some of the excess water is drained. This water flows directly back to the collection tank 52 through the guide groove 62, realizing the initial draining of the fish body, reducing the water burden in subsequent processing stages, and avoiding water droplets from polluting the workshop floor. Moreover, the opening direction of the guide groove 62 is consistent with the guiding direction. The guide groove 62 can reduce some of the friction between the fish body and the guide plate 61.

[0024] Working principle: During operation, the frozen tilapia is placed at the high end of the guide plate 22. Under the influence of gravity, the fish slowly slides down the inclined surface of the guide plate 22. During the descent, the electric telescopic rod 31 of the interception component periodically pushes the interception plate 32 according to a set program to temporarily block the fish, causing it to gather and remain in a specific area for a period of time. At this time, the nozzle 44 of the defrosting component sprays defrosting water of appropriate temperature downwards, evenly spraying the stationary fish. After the spraying is completed, the interception plate 32 opens, and the fish continues to... The fish continues to slide down and naturally tumbles under the stepped shape of the guide plate 22, exposing the part that was originally in contact with the plate surface to receive the next stage of thawing spray, thereby achieving uniform thawing from multiple angles. The wastewater generated during thawing falls through the through holes on the guide plate 22 and is collected in the collection tank 52 by the collection plate 51. The fully thawed fish finally slides towards the guide plate 61. During the process of sliding through the guide groove 62, excess water on the surface is scraped off and flows into the collection tank 52. The partially drained fish is then transported to the next processing stage.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thawing device for tilapia processing, comprising a support frame (21), characterized in that: It also includes a guide plate (22) installed on the support frame (21) to allow the fish to slide and flip over, a baffle (23) fixedly connected to the guide plate (22), an interception component installed on the baffle (23) to intercept the fish, a thawing component installed on the baffle (23), a liquid collection component installed on the support frame (21), and a guide component installed on the liquid collection component. When the fish moves on the guide plate (22), the thawing component is used to spray water onto the fish, and the liquid collection component collects the wastewater generated during thawing. After thawing, the fish passes over the liquid collection component while emptying some of the water through the guide component.

2. The thawing device for tilapia processing according to claim 1, characterized in that: The guide plate (22) has through holes, and the through holes are evenly distributed in a straight line array on the guide plate (22). The water generated by the thawing of the fish falls into the liquid collection component through the through holes.

3. The thawing device for tilapia processing according to claim 2, characterized in that: The interception assembly includes an electric telescopic rod (31) mounted on a baffle (23) and an interception plate (32) mounted on the output end of the electric telescopic rod (31). The interception plate (32) and the guide plate (22) together form a temporary fish storage tank.

4. The thawing device for tilapia processing according to claim 3, characterized in that: The guide plate (22) and the baffle (23) have grooves at corresponding positions on the interceptor plate (32), and the interceptor plate (32) slides inside the grooves.

5. The thawing device for tilapia processing according to claim 4, characterized in that: The defrosting assembly includes a support rod (41) mounted on a baffle (23), a delivery pipe (42) mounted on the support rod (41), a flange (43) mounted on the delivery pipe (42), and a nozzle (44). The flange (43) is connected to an external water supply device, which delivers defrosting water to the nozzle (44) through the delivery pipe (42), thereby spraying the defrosting water onto the fish through the nozzle (44).

6. The thawing device for tilapia processing according to claim 5, characterized in that: The liquid collection assembly includes a collection plate (51) mounted on a support frame (21), a collection tank (52) mounted on the collection plate (51), and a drain port (53). The liquid generated during thawing is guided to the inside of the collection tank (52) for collection through the collection plate (51).

7. The thawing device for tilapia processing according to claim 6, characterized in that: The guiding assembly includes a guide plate (61) installed between the guide plate (22) and the collection tank (52) and a guide groove (62) opened on the guide plate (61), through which water on the fish body flows into the collection tank (52).