Aquatic product unfreezing device capable of continuously circulating water flow

Abstract

The invention relates to the technical field of thawing devices, in particular to a water flow sustainable circulating aquatic product thawing device which comprises a base, a heating chamber is arranged on the base, a heater is arranged in the heating chamber, a water inlet is formed in the heating chamber, a thawing pool is fixedly connected to the base, the top of the thawing pool is open, a water pump is arranged on the heating chamber, and a water conveying pipe is arranged on the heating chamber. The base is provided with a servo motor, the servo motor is provided with a rotating shaft, the rotating shaft is in key connection with the unfreezing pool, aquatic products in the unfreezing pool are unfrozen through heat transfer of high-temperature water flow of the heating chamber, separated ice layers are thrown out of the unfreezing pool under the centrifugal action through the rotating action of the unfreezing pool, and therefore the unfreezing effect of the aquatic products is improved. And the unfreezing rate of the device is further guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of thawing devices, and particularly relates to an aquatic product thawing device with sustainable water circulation. Background Art

[0002] Aquatic products generally refer to processed products of aquatic animals and plants produced by marine and freshwater fisheries. After being caught, in order to avoid the growth of microorganisms and retain nutrients, aquatic products need to be frozen and then transported to the selling places.

[0003] Freezing treatment, that is, wrapping a thin ice layer on the surface of aquatic products, generally referred to as "icing" or "ice coating", can effectively lock in moisture, maintain the taste and freshness of aquatic products, and also facilitate

[0004] transportation. According to the regulations on the ice coating limit of frozen aquatic products in "Limit of Ice Coating for Frozen Aquatic Products", the maximum limit of icing is less than 20%.

[0005] Common thawing methods for aquatic products are as follows. One is air thawing. This method does not require additional equipment and thaws naturally. It is economical and convenient but takes a long time. The other is running water thawing. The aquatic products to be thawed are put into a thawing pool, and through the effective heat exchange between the water flow and the frozen aquatic products, the thawing purpose is achieved. During this thawing process, the aquatic products in the thawing pool and the shed ice layer are mixed. The ice layer in the thawing pool, as an insulating layer with a low thermal conductivity (about 2.2 W / m·K), will hinder the heat exchange efficiency.

[0006] Based on the running water thawing method, this device separates the aquatic products in the thawing pool and the shed ice layer through a mechanical separation method, thereby improving the effective heat exchange efficiency between the water flow and the frozen aquatic products. Therefore, an aquatic product thawing device with sustainable water circulation is proposed. Summary of the Invention

[0007] In order to solve the problems raised in the background art, the present invention provides an aquatic product thawing device with sustainable water circulation, and the following is a further elaboration of the present invention.

[0008] An aquatic product thawing device with sustainable water circulation includes a base. A heating chamber is provided on the base. A heater is provided in the heating chamber. An inlet is opened on the heating chamber. A thawing pool is fixedly connected to the base. The top of the thawing pool is open. A water pump is provided on the heating chamber. A water delivery pipe is provided on the heating chamber. A spraying member is provided on the water delivery pipe. A rubber rod is provided on the thawing pool. A servo motor is provided on the base. A rotating shaft is provided on the servo motor. The rotating shaft is key-connected to the thawing pool. Through the heat transfer of the high-temperature water flow in the heating chamber, the aquatic products in the thawing pool are thawed, and through the rotational movement of the thawing pool, the separated ice layer is thrown out of the thawing pool by centrifugal force.

[0010] Further, a cutting member is provided thereon, a circular saw blade is provided on the cutting member, a cutting column is provided on the cutting member, the cutting column penetrates through the thawing pool and is slidably connected to the thawing pool, and the cutting column and the cutting member can form a plaster saw mechanism. With the plaster saw structure, large pieces of ice are cut to accelerate the thawing rate of aquatic products.

[0011] Further, a fixing frame is provided on the heating chamber, a double-axis cylinder is provided on the fixing frame, a support frame is slidably connected to the fixing frame, one end of the double-axis cylinder is connected to the support frame, a sliding member is provided on the support frame, a pressing frame is provided on the sliding member, a compression spring is sleeved between the pressing frame and the sliding member, and a net pocket is provided on the pressing frame, aiming to press the aquatic products through the net pocket to facilitate the cutting of the cutting member.

[0012] Further, no rubber rod is provided within the radius radiation range of the cutting member in the thawing pool, aiming not to affect the cutting actions of the net pocket and the cutting member.

[0013] Further, a rotating chuck is provided on the cutting column, an annular groove is provided on the rotating chuck, a lifting frame is provided within the annular groove, and the lifting frame is connected to the other end of the double-axis cylinder, aiming to drive the cutting column to move upward to enable the cooperation between the cutting member and the net pocket.

[0014] Further, a separating plate is provided on the heating chamber, the separating plate is of a double-layer structure, the upper plate and the lower plate form a gradient, a collecting groove is formed between the upper plate and the lower plate, the separating plate is placed between the thawing pool and the heating chamber, water holes are opened on the separating plate, the water holes are distributed on the upper plate of the separating plate, through holes are opened on the heating chamber, and the water holes correspond to the through holes of the heating chamber, aiming to recycle the splashed water flow.

[0015] Further, a ice-pushing member is provided on the thawing pool, and the ice-pushing member is attached to the upper plate of the separating plate, aiming to push the splashed ice cubes to the edge of the separating plate to avoid blocking the water holes.

[0016] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0017] 1. In the present invention, the heat in the heating chamber is transferred to the thawing pool in the form of water flow through the spraying member to accelerate the thawing of aquatic products. Through the rotation of the thawing pool, the fallen ice layer is separated from the thawing pool by centrifugal force, thereby improving the thawing efficiency of the device.

[0018] 2. In the present invention, a plaster saw mechanism is formed by the cutting column and the cutting member. Through the high-frequency vibration grinding method, safe cutting of large pieces of ice is achieved without damaging aquatic products. Through the double-axis cylinder, the net pocket and the cutting member move towards each other to fix the ice cubes therein, facilitating the cutting action of the cutting member and further accelerating the thawing rate of aquatic products.

[0019] 3. The present invention sets a separation plate between the heating chamber and the thawing pool, and water holes are arranged on the separation plate to make the swung water flow cycle back into the heating chamber. By setting an ice pushing member on the thawing pool, the swung ice cubes are pushed to the edge of the separation plate, thereby avoiding blocking the water holes on the separation plate and ensuring the smooth circulation of the water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 : Schematic diagram of the overall structure of the present invention;

[0021] Figure 2 : Schematic diagram of the structure of the heating chamber of the present invention;

[0022] Figure 3 : Schematic diagram of the structure at position A of the present invention;

[0023] Figure 4 : Schematic diagram of the structure of the components related to the cutting action of the present invention;

[0024] In the figure: 1 - base, 11 - heating chamber, 101 - water inlet, 12 - servo motor, 13 - rotating shaft, 14 - thawing pool, 15 - rubber rod, 16 - heater, 17 - water pump, 18 - water delivery pipe, 19 - spraying member, 2 - fixing frame, 21 - double - shaft cylinder, 22 - support frame, 23 - sliding member, 24 - pressing frame, 25 - compression spring, 26 - net bag, 27 - lifting frame, 28 - rotating chuck, 29 - cutting member, 291 - cutting column, 3 - ice pushing member, 31 - separation plate, 32 - water hole, 33 - collection tank. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, a specific embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0026] Refer to the attached Figures 1 - 4, An aquatic product thawing device with sustainable water flow circulation, including a support base 1 made of high-quality stainless steel. A thawing chamber, a heating chamber, and a water circulation chamber for aquatic products are respectively provided on the base 1. The purpose is to transfer the heat energy generated in the heating chamber to the thawing chamber through the water circulation chamber, thereby achieving the thawing effect of aquatic products. Therefore, a heating chamber 11 is provided on the base 1, and several heaters 16 are provided in the heating chamber 11. The heaters 16 are used to heat and keep the water flow in the heating chamber 11 at a constant temperature. An inlet 101 for facilitating water addition is opened on the heating chamber 11. A thawing pool 14 for thawing aquatic products is fixedly connected to the base 1. The top of the thawing pool 14 is open, aiming to transfer the heat generated in the heating chamber 11 to the thawing pool 14. To facilitate the heat transfer in the heating chamber 11, the following settings are made: A water pump 17 for driving water flow circulation is provided on the side wall of the heating chamber 11. Symmetrically distributed water pipes 18 are fixedly connected to the heating chamber 11. A rotatable spraying member 19 is fixedly connected to each of the water pipes 18. The nozzle of the spraying member 19 can point to the open top of the thawing pool 14, meaning that through the heaters 16 in the heating chamber 11, the water flow in the heating chamber 11 can be heated. By starting the water pump 17, the heated water flow is transported to the water pipes 18 and sprayed into the thawing pool 14 through the spraying member 19, thereby realizing the heat exchange between the heating chamber 11 and the thawing pool 14, and then accelerating the thawing rate of the aquatic products in the thawing pool 14.

[0027] Considering that the thawing efficiency is low only through the water flow heat exchange method, the following improvements are made: Uniformly distributed rubber rods 15 are fixedly connected to the thawing pool 14. The purpose is to generate an impact force on the ice layer by virtue of the characteristic of the rubber material having a high elastic modulus, and at the same time avoid damaging the aquatic products during ice breaking. Before thawing, the aquatic products to be thawed are added to the open top of the thawing pool 14. When the ice layer on the surface of the aquatic products comes into contact with the rubber rods 15, an impact force will be generated, causing some of the ice layer on the surface of the aquatic products to fall off due to the impact. Then, high-temperature water flow is sprayed into the thawing pool 14 through the spraying member 19 to accelerate the melting of the ice layer.

[0028] Reference Figure 2, as described in the background, during the above heat exchange process, the aquatic products in the thawing pool 14 are mixed with the ice layer shed from their surfaces. The accumulation of the ice layer will form a physical barrier, hindering the continuous flow of the high-temperature fluid on the surface of the aquatic products, resulting in an increase in local thermal resistance, causing the temperature field received by the aquatic products in the thawing pool 14 to be uneven, and further weakening the effective heat transfer. Therefore, this device separates the shed ice layer from the aquatic products to improve the heat exchange efficiency. A servo motor 12 is provided on the base 1, and a rotating shaft 13 is fixedly connected to the output shaft of the servo motor 12. The end of the rotating shaft 13 is key-connected to the bottom wall of the thawing pool 14, meaning that the power source generated by the servo motor 12 drives the rotation of the rotating shaft 13, and then drives the thawing pool 14 and the internal aquatic products, the shed ice layer, and the rubber rod 15 to rotate synchronously. At this time, the rubber rod 15 collides with the aquatic products, further causing the ice layer on the surface of the aquatic products to shed. As the thawing pool 14 rotates, the water flow inside it will form a rotating paraboloid. Since the density of the ice layer is less than that of water, it will float on the surface layer of the water body. As the spraying member 19 continuously replenishes the water body, the thawing pool 14 will continuously overflow the water body, and the ice layer will preferentially swing out from the side wall of the thawing pool 14, thereby achieving the effect of separating the shed ice layer from the aquatic products. Thus, the high-temperature water flow sprayed by the spraying member 19 can accelerate the heat exchange rate between the heating chamber 11 and the thawing pool 14.

[0029] Reference Figure 4, when freezing aquatic products, there is a temperature difference between the inside and the surface of the aquatic products. Moisture migrates from the inside of the high-temperature area to the surface of the low-temperature area and freezes, which will cause the ice layer on the surface of the aquatic products to gradually accumulate into large pieces of ice. However, it is difficult for the large pieces of ice to be broken by the impact force of the rubber rod 15, and it is also difficult to quickly dissolve only by the high-temperature water flow sprayed by the spraying member 19. Therefore, the present invention accelerates its dissolution rate by breaking the large pieces of ice wrapped on the surface of the aquatic products. Specifically: a cutting member 29 for cutting ice is slidably connected to the bottom wall of the thawing pool 14. The cutting member 29 penetrates the bottom wall of the thawing pool 14. A circular saw blade made of high-hardness carbon steel is provided on the top of the cutting member 29, which means that the circular saw blade on the top of the cutting member 29 vibrates at a high frequency and low amplitude to cut the ice without damaging the aquatic products themselves. In order to make the cutting member 29 vibrate at a high frequency, the following design is made: a power source cutting column 291 that can rotate and vibrate at a high frequency is provided on the side wall of the cutting member 29. Electronic components for providing high-frequency vibration and rotational power are provided on the cutting column 291. The cutting column 291 penetrates the bottom wall of the thawing pool 14 and can slide up and down on the bottom wall of the thawing pool 14. The cutting column 291 is slidably connected to the bottom wall of the cutting member 29. The cutting column 291 and the cutting member 29 can form a gypsum saw structure, and safe cutting is achieved through high-frequency vibration grinding. Combining circular tooth design and amplitude control, while efficiently cutting ice, the aquatic products are protected to the greatest extent. Start the servo motor 12 to drive the rotating shaft 13 to rotate, and then drive the thawing pool 14 to rotate. By starting the cutting column 291, the cutting member 29 can rotate and generate high-frequency vibration at the same time, so that the ice in contact with the circular teeth on the cutting member 29 can be cut.

[0030] During the above process, the aquatic products and the ice wrapped on the surface are put into the thawing pool 14 and will rotate with the thawing pool 14. The cutting member 29 also rotates due to the cutting column 291. When the cutting member 29 cuts the ice wrapped on the surface of the rotating aquatic products, there will be situations of deviation and relative sliding, which will lead to cutting failure. Therefore, during the cutting process, it is necessary to fix the ice wrapped on the surface of the aquatic products. Specifically: symmetrically distributed fixing frames 2 are fixedly connected to the outer wall of the heating chamber 11. A double-acting cylinder 21 is fixedly connected to each of the fixing frames 2. A support frame 22 is slidably connected between the two fixing frames 2. The support frame 22 is placed on the top of the thawing pool 14. One output shaft of the double-acting cylinder 21 is fixedly connected to the support frame 22, aiming to drive the support frame 22 to move on the fixing frame 2 by the double-acting cylinder 21. A stabilizing assembly for pressing and stabilizing the aquatic products is provided on the support frame 22, including a sliding member 23 slidably connected to the support frame 22. A pressing frame 24 is slidably connected to the bottom of the sliding member 23. A compression spring 25 is sleeved between the pressing frame 24 and the sliding member 23. A net 26 full of water outlet holes is fixedly connected to the bottom of the pressing frame 24. The net 26 is suspended at the open top of the thawing pool 14.

[0031] When it is convenient for blanking, the sliding member 23 can be moved to the edge of the support frame 22, thereby driving the pressing frame 24 and the holding net 26 to move to the edge. After blanking, the sliding member 23, the pressing frame 24 and the holding net 26 thereon can be moved to the axis center of the thawing pool 14. The double-shaft cylinder 21 is started to drive the support frame 22 to move downward, thereby driving the pressing frame 24 and the holding net 26 to move downward. The holding net 26 moves downward to contact the aquatic products in the thawing pool 14. Under the action of the compression spring 25, the holding net 26 generates a continuous downward pressing force on the aquatic products and holds the aquatic products, thereby achieving the effect of fixing the aquatic products.

[0032] During the downward movement of the holding net 26, the water flow inside the thawing pool 14 will filter out from the water outlet holes of the holding net 26, which is convenient for the holding net 26 to directly contact the aquatic products. At the same time, the cutting column 291 causes the cutting member 29 to rotate and vibrate at a high frequency. With the cooperation of the holding net 26 and the cutting member 29, the aquatic products to be cut can be stabilized between the holding net 26 and the cutting member 29, realizing the cutting work of the ice cubes wrapped on the surface of the aquatic products. It should be specifically noted that no rubber rod 15 is provided within the radius radiation range of the cutting member 29 on the bottom wall of the thawing pool 14, aiming to prevent the rubber rod 15 from affecting the downward movement of the holding net 26 and thus affecting the cutting effect.

[0033] However, during the above cutting process, the servo motor 12 has been started, which will drive the rotating shaft 13 to rotate, thereby driving the thawing pool 14 to rotate. The aquatic products floating in the thawing pool 14 will rotate with the thawing pool 14. Only relying on the pressure of the downward movement of the holding net 26 cannot ensure the fixation of the floating aquatic products. Therefore, the following settings are made: A rotating chuck 28 for providing a supporting force is fixedly connected to the bottom of the cutting column 291. An annular groove is formed on the side wall of the rotating chuck 28, and symmetrically distributed lifting frames 27 are clamped in the annular groove. The end parts of the lifting frames 27 are respectively fixedly connected to the other output shafts of the adjacent double-shaft cylinders 21, aiming to start the double-shaft cylinder 21 to synchronously drive the support frame 22 to descend and the lifting frames 27 to ascend, thereby driving the pressing frame 24 to descend and the rotating chuck 28 to ascend, so as to synchronously realize the downward movement of the holding net 26 and the upward movement of the cutting member 29. During the process of the holding net 26, the cutting member 29 and the cutting column 291 moving towards each other, the aquatic products floating and rotating on the surface of the thawing pool 14 will be stabilized between the holding net 26 and the cutting member 29, and then cutting is carried out.

[0034] Furthermore, the rotation of the thawing pool 14 drives the internal water flow to rotate and form a vortex, which will generate a certain force on the aquatic products between the scoop net 26 and the cutting member 29, thereby affecting the cutting effect of the scoop net 26 and the cutting member 29 on the aquatic products. Therefore, the following settings are made for this device: under the action of the output shaft of the double-axis cylinder 21, the cutting member 29 moves up to a height just above the liquid level when the thawing pool 14 rotates, aiming to ensure that the scoop net 26 and the cutting member 29 keep the aquatic products above the liquid level of the thawing pool 14, avoiding the influence of the rotating liquid level in the thawing pool 14 on the aquatic products between the scoop net 26 and the cutting member 29, and further ensuring the cutting effect of the cutting member 29 on the aquatic products.

[0035] The ice cubes and part of the water flow cut off by the cutting member 29 will rotate with the thawing pool 14 and swing out along the side wall of the thawing pool 14. Considering that the heating chamber 11 of this device needs to continuously add water to ensure the heat exchange effect of the thawing pool 14, in order to save costs, this device recycles the water flow swinging out of the thawing pool 14. Specifically: a separation plate 31 facilitating water flow circulation is fixedly connected to the upper surface of the heating chamber 11. The separation plate 31 is a double-layer structure, and the upper layer plate and the lower layer plate are attached and form a gradient. A collection tank 33 can be formed between the upper layer plate and the lower layer plate. The separation plate 31 is rotatably connected to the bottom wall of the thawing pool 14, aiming that the rotation of the thawing pool 14 does not affect the separation plate 31. The separation plate 31 is placed between the bottom wall of the thawing pool 14 and the top wall of the heating chamber 11. Uniformly distributed water holes 32 are penetrated on the separation plate 31. The water holes 32 are distributed on the upper layer plate of the separation plate 31. Uniformly distributed through holes are opened at the top of the heating chamber 11. The water holes 32 correspond to the through holes at the top of the heating chamber 11 one by one, aiming to direct the water flow swinging out of the thawing pool 14 to flow back to the heating chamber 11, thereby realizing the sustainable circulation of the water flow of this device.

[0036] The servo motor 12 is started, driving the rotating shaft 13 to rotate, and then driving the thawing pool 14 to rotate. Synchronously, the double-axis cylinder 21 is started, driving the support frame 22 and the water pump 17 to move towards each other, and then driving the pressing frame 24 and the rotating chuck 28 to move towards each other, thereby driving the scoop net 26, the cutting member 29 and the cutting column 291 to move towards each other until the cutting member 29 moves to a height above the liquid level in the thawing pool 14. Thus, above the liquid level of the thawing pool 14, the cutting member 29 cuts the ice layer wrapped on the surface of the aquatic products. After cutting, the fallen ice cubes and part of the water flow, with the rotation of the thawing pool 14, will swing out from the side wall of the thawing pool 14. The ice cubes and the water flow both fall on the separation plate 31. Subsequently, the water flow circulates back into the heating chamber 11 from the water holes 32 on the separation plate 31.

[0037] Since the broken ice cubes and part of the water flow after cutting are both swept out and distributed on the separation plate 31, to prevent the ice cubes from blocking the water holes 32 on the separation plate 31 and to prevent the melted ice cubes from flowing back to the heating chamber, resulting in increased energy consumption, the following settings are made. A pushing member 3 for pushing the ice cubes to the edge is fixedly connected to the side wall of the thawing pool 14, and the bottom of the pushing member 3 is attached to the upper plate of the separation plate 31.

[0038] The swept-out ice cubes fall to the separation plate 31. With the rotation of the thawing pool 14, the pushing member 3 is driven to rotate synchronously, and then the ice cubes on the separation plate 31 are pushed to the collection groove 33 of the separation plate 31. Then, the relevant staff can collect and process the ice cubes at the collection groove 33. In the above process, through the pushing action of the pushing member 3, the ice cubes can be prevented from blocking the water holes 32 on the separation plate 31, ensuring the smooth return of the swept-out water flow to the heating chamber 11. At the same time, the ice cubes can be regularly collected, thereby improving the thawing efficiency and practical efficiency of the device.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for thawing aquatic products with continuous water circulation, comprising a base (1), characterized in that: The base (1) is provided with a heating chamber (11), a heater (16) is provided in the heating chamber (11), a water inlet (101) is opened on the heating chamber (11), a thawing pool (14) is fixedly connected to the base (1), the top of the thawing pool (14) is open, a water pump (17) is provided on the heating chamber (11), a water pipe (18) is provided on the heating chamber (11), a spraying member (19) is provided on the water pipe (18), a rubber rod (15) is provided on the thawing pool (14), a servo motor (12) is provided on the servo motor (12), and a rotating shaft (13) is provided on the rotating shaft (13) and is key-connected to the thawing pool (14).

2. The aquatic product thawing device with continuous water circulation according to claim 1 is characterized by: The (14) is provided with a cutting piece (29), the cutting piece (29) is provided with a round-toothed saw blade, the cutting piece (29) is provided with a cutting column (291), the cutting column (291) penetrates the thawing pool (14) and is slidably connected to the thawing pool (14), and the cutting column (291) and the cutting piece (29) constitute a gypsum saw structure.

3. The aquatic product thawing device with continuous water circulation according to claim 1 is characterized in that: The heating chamber (11) is provided with a fixing frame (2), the fixing frame (2) is provided with a double-axis cylinder (21), the fixing frame (2) is slidably connected with a support frame (22), one end of the double-axis cylinder (21) is connected to the support frame (22), the support frame (22) is provided with a sliding member (23), the sliding member (23) is provided with a pressing frame (24), a compression spring (25) is sleeved between the pressing frame (24) and the sliding member (23), and the pressing frame (24) is provided with a net (26).

4. The aquatic product thawing device with continuous water circulation according to claim 1 is characterized in that: No rubber rod (15) is provided within the radius radiation range of the cutting member (29) in the thawing pool (14).

5. The aquatic product thawing device with continuous water circulation according to claim 2 is characterized in that: The cutting column (291) is provided with a rotating chuck (28), the rotating chuck (28) is provided with an annular groove, a lifting frame (27) is provided in the annular groove, and the lifting frame (27) is connected to the other end of the double-axis cylinder (21).

6. The aquatic product thawing device with continuous water circulation according to claim 1 is characterized in that: The heating chamber (11) is provided with a separation plate (31), the separation plate (31) is a double-layer structure, the upper plate and the lower plate form a gradient, a collection tank (33) is formed between the upper plate and the lower plate, the separation plate (31) is placed between the thawing pool (14) and the heating chamber (11), the separation plate (31) is provided with water holes (32), the water holes (32) are distributed on the upper plate of the separation plate (31), the heating chamber (11) is provided with through holes, the water holes (32) correspond to the through holes of the heating chamber (11).

7. The aquatic product thawing device with continuous water circulation according to claim 1 is characterized by: The thawing pool (14) is provided with an ice pushing member (3), and the ice pushing member (3) is in contact with the upper plate of the separation plate (31).

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