A cold air circulation drying device for preparing yellow croaker dried salted fish

Abstract

The present invention discloses a cold air circulation drying device for preparing yellow croaker dried salted fish, belonging to the technical field of yellow croaker dried salted fish processing. It includes a drying box with an open end on one side wall, and a box door is hinged at the open end. An installation cylinder is arranged inside the drying box. A plurality of fish hanging mechanisms are installed on the installation cylinder. Each fish hanging mechanism consists of a plurality of installation rods. The plurality of installation rods are circumferentially and arrayedly distributed on the side wall of the installation cylinder. A plurality of rotating shafts are rotatably installed on the bottom wall of the installation rod, and a hook is fixed at the bottom of the rotating shaft. The interiors of both the installation cylinder and the installation rod are hollow, and the installation rod is communicated with the inner cavity of the installation cylinder. A piston block is arranged inside the installation rod. One end of the rotating shaft away from the hook extends into the interior of the installation rod. A driving mechanism is arranged between the piston block and the rotating shaft. Exhaust holes are formed on the installation rod. The present invention can comprehensively air-dry the yellow croaker dried salted fish, with cold air circulating continuously, reducing energy consumption and improving the air-drying effect of the yellow croaker dried salted fish.

Description

Technical Field

[0001] The present invention relates to the technical field of processing yellow croaker dried fish, and specifically relates to a cold air circulation drying device for preparing yellow croaker dried fish. Background Art

[0002] In the production process of processing yellow croaker dried fish, the yellow croaker dried fish needs to be pickled, and the pickled yellow croaker dried fish needs to be washed and air-dried. Most of the existing air-drying methods are natural air-drying. With the increase in the production of yellow croaker dried fish and the constraints of production conditions such as site, the existing air-drying methods can no longer meet the requirements. Natural air-drying takes a long time and has low drying efficiency.

[0003] After retrieval, it is found that the patent with the publication number CN212728655U discloses a device for air-drying yellow croaker dried fish, which includes a rotating mechanism, a support frame, a water collecting basin, and several stacked fish cages. The water collecting basins are all mounted on the support frame, the fish cages are installed on the support frame, a fish rack is arranged inside the fish cage, several fish racks are arranged in a circumferential array inside the fish cage, the yellow croaker dried fish is placed at the fish rack, the surface of the fish rack is inclined, a water draining groove is opened on the surface of the fish rack, and a ventilation opening is opened on the side of the fish rack. The rotating mechanism includes a rotating flange, the support frame is fixedly installed on the rotating flange, the rotating flange drives the support frame, and the support frame drives the fish cage to rotate. When the fish cage rotates, air circulates through the ventilation opening of the fish rack to air-dry the yellow croaker dried fish;

[0004] Although this patent can air-dry the yellow croaker dried fish, there are still some deficiencies: the air-drying efficiency is still low only through the air flow generated by the rotation of the fish cage, and the yellow croaker dried fish is placed flat on the fish rack, and the back is difficult to fully contact with the air, resulting in poor air-drying effect. Summary of the Invention

[0005] The purpose of the present invention is to provide a cold air circulation drying device for preparing yellow croaker dried fish, and solve the following technical problems: the air-drying efficiency of the existing device is still low through the air flow generated by the rotation of the fish cage, and the yellow croaker dried fish is placed flat on the fish rack, and the back is difficult to fully contact with the air, resulting in poor air-drying effect.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A cold air circulation drying device for preparing yellow croaker dried fish includes a drying box with an open end on one side wall, and a box door is hinged at the open end. An installation cylinder is arranged inside the drying box, and multiple groups of fish hanging mechanisms are installed on the installation cylinder. Each group of fish hanging mechanisms consists of multiple installation rods, and the multiple installation rods are distributed in a circumferential array on the side wall of the installation cylinder. Multiple rotating shafts are rotatably installed on the bottom wall of the installation rod, and a hook is fixed at the bottom of the rotating shaft;

[0008] Both the installation cylinder and the installation rod are hollow inside, and the installation rod communicates with the inner cavity of the installation cylinder. A piston block is arranged inside the installation rod. One end of the rotating shaft away from the hook extends into the installation rod. A driving mechanism is arranged between the piston block and the rotating shaft. An exhaust hole is formed in the installation rod.

[0009] An air inlet mechanism and a circulation mechanism are further arranged on the drying box. The circulation pipe of the circulation mechanism is communicated with the installation cylinder. Activated carbon is filled in the installation cylinder.

[0010] As a further scheme of the present invention: The air inlet mechanism includes an air inlet pipe and two vertical pipes. The two vertical pipes are fixed on the inner walls of both sides of the drying box. A plurality of air outlet nozzles are installed on the side of the vertical pipe facing the installation cylinder along the vertical direction. The two ends of the air inlet pipe are respectively connected to the two vertical pipes, and the air inlet pipe is connected to an external air source.

[0011] As a further scheme of the present invention: An inner cylinder is arranged in the installation cylinder. A plurality of air outlet holes are formed in the inner cylinder, and the activated carbon is located between the installation cylinder and the inner cylinder. One end of the circulation pipe extends into the inner cylinder, and a plurality of air inlet holes are formed at the end of the circulation pipe extending into the inner cylinder.

[0012] As a further scheme of the present invention: An opening is arranged at the top of the installation cylinder, and a sealing cover is installed on the circulation pipe.

[0013] As a further scheme of the present invention: One end of the circulation pipe is connected to the bottom of the side wall of the drying box. The circulation pipe is provided with a suction pump and a water suction tank, and a desiccant is filled in the water suction tank.

[0014] As a further scheme of the present invention: A gear is installed at one end of the rotating shaft located inside the installation rod. A rack is fixed on the side wall of the piston block close to the gear, and the rack meshes with the gear. A fixed block is installed on the inner wall of the installation rod. A spring is connected to the fixed block, and one end of the spring is connected to the piston block. A rectangular hole is arranged at one end of the installation rod away from the installation cylinder.

[0015] As a further scheme of the present invention: A water collection mechanism is arranged at the bottom of the drying box. The water collection mechanism includes a water collection tank. A first water collection pipe is connected to the water collection tank. Two second water collection pipes are connected to the first water collection pipe. A water collection hopper is fixed at one end of the second water collection pipe, and the water collection hopper is communicated with the bottom of the drying box. A valve is installed on the first water collection pipe.

[0016] As a further scheme of the present invention: A driving motor is installed at the bottom of the drying box, and the output shaft of the driving motor is connected to the installation cylinder.

[0017] The beneficial effects of the present invention:

[0018] (1) The present invention sets up a fish hanging mechanism, in cooperation with an air intake mechanism and a circulation mechanism. The air intake mechanism conveys cold air into the drying box. The fish hanging mechanism is used to hang the salted yellow croaker in the drying box, increasing the contact area with the cold air. The circulation mechanism continuously circulates the cold air, reducing energy consumption. And by setting activated carbon in the installation cylinder, the fishy smell and volatile gases in the circulating air can be adsorbed, avoiding secondary pollution of the salted yellow croaker by the circulating air. A piston block is arranged in the installation rod. When the air pressure in the installation cylinder gradually increases, it pushes the piston block to move, causing the rotating shaft to rotate, further increasing the contact area between the salted yellow croaker and the air;

[0019] (2) The present invention sets up a water absorption tank on the circulation pipe. The desiccant in the water absorption tank can absorb the moisture in the circulating air, preventing the circulating air from carrying moisture and entering the drying box again. The desiccant is replaced regularly to ensure the water absorption performance;

[0020] (3) The present invention sets up a water collection mechanism, which can collect the water droplets dripping from the salted yellow croaker for recycling, avoiding the influence of the evaporation of water droplets in the drying box on the air-drying effect of the salted yellow croaker. Brief Description of the Drawings

[0021] The following further describes the present invention in conjunction with the drawings.

[0022] Figure 1 is the first perspective structural schematic diagram of the whole of the present invention;

[0023] Figure 2 is the second perspective structural schematic diagram of the whole of the present invention;

[0024] Figure 3 is the internal structural schematic diagram of the drying box of the present invention;

[0025] Figure 4 is the three-dimensional structural schematic diagram of the installation cylinder and the installation rod of the present invention;

[0026] Figure 5 is the three-dimensional structural schematic diagram of the installation rod of the present invention;

[0027] Figure 6 is the internal structural schematic diagram of the installation rod of the present invention;

[0028] Figure 7 is the structural schematic diagram of the installation cylinder and the inner cylinder in the disassembled state of the present invention;

[0029] Figure 8 is the structural schematic diagram of the water collection mechanism of the present invention.

[0030] In the figure: 1, drying oven; 2, oven door; 3, air intake mechanism; 301, intake pipe; 302, vertical pipe; 303, air outlet nozzle; 4, circulation mechanism; 401, circulation pipe; 402, suction pump; 403, suction water tank; 404, sealing cover; 405, air intake hole; 5, installation cylinder; 6, installation rod; 7, inner cylinder; 8, air outlet hole; 9, rotating shaft; 10, hook; 11, exhaust hole; 12, rectangular hole; 13, piston block; 14, fixed block; 15, spring; 16, rack; 17, gear; 18, water collection mechanism; 1801, water collection tank; 1802, first water collection pipe; 1803, valve; 1804, second water collection pipe; 1805, water collection hopper.

[0031] The accompanying drawings are only for illustrative purposes and should not be construed as limitations on the present invention; for a better illustration of this embodiment, some components in the drawings are omitted, enlarged or reduced, and do not represent the size and shape of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. Detailed implementation manners

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1 to 6As shown in the figure, the present invention is a cold air circulation drying device for preparing salted yellow croaker, which includes a drying box 1 with an open side wall, and a box door 2 is hinged at the open side. An installation cylinder 5 is arranged inside the drying box 1. A plurality of fish hanging mechanisms are installed on the installation cylinder 5. Each fish hanging mechanism is composed of a plurality of installation rods 6. The plurality of installation rods 6 are circumferentially arranged on the side wall of the installation cylinder 5. A plurality of rotating shafts 9 are rotatably installed on the bottom wall of the installation rod 6, and a hook 10 is fixed at the bottom of the rotating shaft 9; both the inside of the installation cylinder 5 and the installation rod 6 are hollow, and the installation rod 6 is communicated with the inner cavity of the installation cylinder 5. A piston block 13 is arranged inside the installation rod 6. One end of the rotating shaft 9 away from the hook 10 extends into the inside of the installation rod 6. A driving mechanism is arranged between the piston block 13 and the rotating shaft 9. An exhaust hole 11 is opened on the installation rod 6; An air inlet mechanism 3 and a circulation mechanism 4 are also arranged on the drying box 1. The circulation pipe 401 of the circulation mechanism 4 is communicated with the installation cylinder 5. Activated carbon is filled in the installation cylinder 5; Open the box door 2 to hang the salted yellow croaker on the hook 10, and then close the box door 2. Use the air inlet mechanism 3 to send cold air into the drying box 1, so as to dry the salted yellow croaker more comprehensively. And one end of the circulation pipe 401 is connected to the installation cylinder 5. The activated carbon in the installation cylinder 5 will remove the fishy smell and some volatile gases in the circulating air, avoiding secondary pollution to the salted yellow croaker. By setting the piston block 13, the continuously entering gas will cause the air pressure in the installation cylinder 5 to gradually increase and push the piston block 13 to move. Cooperating with the driving mechanism, the rotating shaft 9 rotates, driving the salted yellow croaker to swing, further increasing the contact area between the salted yellow croaker and the air, and improving the drying efficiency and effect.

[0034] Referring to Figure 2 and Figure 3 , the air inlet mechanism 3 includes an air inlet pipe 301 and two vertical pipes 302. The two vertical pipes 302 are fixed on the inner side walls of both sides of the drying box 1. A plurality of air outlet nozzles 303 are installed on the side of the vertical pipe 302 facing the installation cylinder 5 along the vertical direction. The two ends of the air inlet pipe 301 are respectively connected to the two air inlet pipes 301, and the air inlet pipe 301 is connected to an external air source; Use the external air source to provide cold air. The cold air is sprayed out by a plurality of air outlet nozzles 303 after passing through the air inlet pipe 301 and the vertical pipe 302, evenly drying the salted yellow croaker.

[0035] Referring to Figure 3 , Figure 4 and Figure 7 , an inner cylinder 7 is arranged inside the installation cylinder 5. A plurality of air outlet holes 8 are opened on the inner cylinder 7, and the activated carbon is located between the installation cylinder 5 and the inner cylinder 7. One end of the circulation pipe 401 extends into the inside of the inner cylinder 7, and a plurality of air inlet holes 405 are opened at the end of the circulation pipe 401 extending into the inner cylinder 7; An opening is arranged at the top of the installation cylinder 5, and a sealing cover 404 is installed on the circulation pipe 401; The activated carbon is located between the installation cylinder 5 and the inner cylinder 7, which is convenient for replacement. The circulation pipe 401 is inserted into the inner cylinder 7. After the circulating air enters the inner cylinder 7, it contacts the activated carbon through the air outlet holes 8 on the inner cylinder 7 to ensure the adsorption effect.

[0036] Refer to Figure 2 , one end of the circulation pipe 401 is connected to the bottom of the side wall of the drying box 1. The circulation pipe 401 is provided with an air suction pump 402 and a water suction box 403, and the water suction box 403 is filled with a desiccant; the air in the drying box 1 is sucked into the circulation pipe 401 by the air suction pump 402 and then discharged into the installation cylinder 5. The air passes through the desiccant in the water suction box 403, and the moisture can be absorbed to prevent the moisture in the air from entering the drying box 1 again.

[0037] Refer to Figure 5 and Figure 6 , a gear 17 is installed at one end of the rotating shaft 9 located inside the installation rod 6. A rack 16 is fixed on the side wall of the piston block 13 close to the gear 17, and the rack 16 meshes with the gear 17. A fixed block 14 is installed on the inner wall of the installation rod 6, and a spring 15 is connected to the fixed block 14. One end of the spring 15 is connected to the piston block 13. A rectangular hole 12 is provided at one end of the installation rod 6 away from the installation cylinder 5; when the piston block 13 moves, the spring 15 is compressed, driving the rack 16 to move, causing the two gears 17 and the rotating shaft 9 to rotate. When the piston block 13 moves to the exhaust hole 11, the circulating air is discharged through the exhaust hole 11. Under the action of the spring 15, the piston block 13 returns to its original position, driving the rotating shaft 9 to rotate again, making the yellow croaker dried fish on the hook 10 in a swinging posture, further increasing the contact area with the cold air. The rectangular hole 12 is for the convenience of the rack 16 to extend.

[0038] Refer to Figure 1 and Figure 8 , a water collection mechanism 18 is provided at the bottom of the drying box 1. The water collection mechanism 18 includes a water collection tank 1801. A first water collection pipe 1802 is connected to the water collection tank 1801. Two second water collection pipes 1804 are connected to the first water collection pipe 1802. A water collection funnel 1805 is fixed at one end of the second water collection pipe 1804, and the water collection funnel 1805 is communicated with the bottom of the drying box 1. A valve 1803 is installed on the first water collection pipe 1802; a driving motor is installed at the bottom of the drying box 1, and the output shaft of the driving motor is connected to the installation cylinder 5; since the yellow croaker dried fish is air-dried after salting and cleaning, there will be sewage dripping. The water collection funnel 1805 is used to collect the dripping water drops. The valve 1803 is regularly opened to discharge the sewage into the water collection tank 1801, preventing the water drops from volatilizing in the drying box 1 and affecting the air-drying effect of the yellow croaker dried fish. At the same time, the sealing cover 404 and the installation cylinder 5 can be connected in a rotary sealing manner. The driving motor can drive the installation cylinder 5 to rotate, which will further improve the contact effect between the yellow croaker dried fish and the cold air.

[0039] The working principle of the present invention:

[0040] (1)The large yellow croaker is pre-treated: Wash the surface of the large yellow croaker with water, scale it, remove its gills and viscera. Cut the large yellow croaker with viscera removed along the abdomen into butterfly slices. After washing, air-dry it for later use.

[0041] (2)Marinate until flavored: Pour the sliced large yellow croaker into a container equipped with ultrasonic waves, add the prepared seasoning liquid such as salt, monosodium glutamate, glucose, and white liquor. Control the temperature within 5°C - 10°C. The ultrasonic power is 1000 - 1500W, the frequency is 60 - 80kHz, the intermittent time is 2 - 5S. After processing for 40 - 60min, rinse it with clean water to wash away the juice on the fish surface.

[0042] (3)Air-dry and dehydrate: Open the box door 2 and hang the salted fish on the hook 10, then close the box door 2. Use the air intake mechanism 3 to convey cold air into the drying box 1 to more comprehensively air-dry the salted fish. Start the suction pump 402. Use the suction pump 402 to suck the gas in the drying box 1 into the circulation pipe 401 and then discharge it into the installation cylinder 5. The gas passes through the desiccant in the water suction box 403, and the moisture can be absorbed to prevent the moisture in the air from entering the drying box 1 again. The dried air enters the installation cylinder 5. The activated carbon removes the fishy smell and some volatile gases in the circulating air to avoid secondary pollution to the salted fish. By setting the piston block 13, the continuously entering gas will cause the air pressure in the installation cylinder 5 to gradually increase and push the piston block 13 to move. After the piston block 13 moves, the spring 15 is compressed, driving the rack 16 to move, causing the two gears 17 and the rotating shaft 9 to rotate. When the piston block 13 moves to the exhaust hole 11, the circulating air is discharged through the exhaust hole 11. Under the action of the spring 15, the piston block 13 resets, driving the rotating shaft 9 to rotate again, making the salted fish on the hook 10 swing. And due to the presence of the piston block 13, the contact time between the circulating air and the activated carbon can be increased, improving the adsorption effect. The sewage dropped by the salted fish is collected by the water collecting hopper 1805. Regularly open the valve 1803 to discharge the sewage from the water collecting tank 1801 to prevent the water droplets from volatilizing in the drying box 1 and affecting the air-drying effect of the salted fish.

[0043] It should be noted that the air-drying is divided into three stages: The first stage: The cold air temperature is 5 - 10°C, the wind speed is 1.2 - 2m / s, and the cold air circulates and dries for 150 - 180min; The second stage: The cold air temperature is 15 - 20°C, the wind speed is 1.5 - 3m / s, and the cold air circulates and dries for 100 - 120min; Stand still for 30 - 60min (to balance the moisture of the product); Then carry out the third stage of cold air circulation drying. The cold air temperature is 45 - 65°C, the wind speed is 2 - 3m / s, and the cold air circulates and dries for 20 - 30min; Until the moisture content of the fish body is 40 - 50%.

[0044] The above has described in detail an embodiment of the present invention, but the above content is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made in accordance with the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A cold air circulation drying device for preparing yellow croaker dried fish, comprising a drying box (1) with an opening on one side wall, and a box door (2) hinged at the opening, characterized in that: The drying box (1) is provided with a mounting cylinder (5), and a plurality of groups of fish hanging mechanisms are installed on the mounting cylinder (5), and each group of fish hanging mechanisms is composed of a plurality of mounting rods (6), and the plurality of mounting rods (6) are distributed in a circular array on the side wall of the mounting cylinder (5), and a plurality of rotating shafts (9) are rotatably installed on the bottom wall of the mounting rods (6), and a hook (10) is fixed to the bottom of the rotating shaft (9); The interiors of the mounting cylinder (5) and the mounting rod (6) are both hollow, and the mounting rod (6) is in communication with the inner cavity of the mounting cylinder (5). A piston block (13) is arranged in the mounting rod (6), and one end of the rotating shaft (9) away from the hook (10) extends into the interior of the mounting rod (6). A driving mechanism is arranged between the piston block (13) and the rotating shaft (9), and an exhaust hole (11) is opened on the mounting rod (6); The drying box (1) is also provided with an air intake mechanism (3) and a circulation mechanism (4); the circulation pipe (401) of the circulation mechanism (4) is connected to the installation cylinder (5); and the installation cylinder (5) is filled with activated carbon; A gear (17) is installed at one end of the rotating shaft (9) located inside the mounting rod (6); a rack (16) is fixed on the side wall of the piston block (13) close to the gear (17), and the rack (16) is meshed with the gear (17); a fixing block (14) is installed on the inner wall of the mounting rod (6); a spring (15) is connected to the fixing block (14), and one end of the spring (15) is connected to the piston block (13); and a rectangular hole (12) is provided at one end of the mounting rod (6) away from the mounting cylinder (5).

2. The cold air circulation drying device for preparing dried yellow croaker according to claim 1, characterized in that: The air intake mechanism (3) comprises an air intake pipe (301) and two vertical pipes (302), the two vertical pipes (302) being fixed to the inner walls of both sides of the drying box (1), a plurality of air outlet nozzles (303) being installed in a vertical direction on one side of the vertical pipe (302) facing the mounting cylinder (5), the two ends of the air intake pipe (301) being respectively connected to the two air intake pipes (301), and the air intake pipe (301) being connected to an external air source.

3. The cold air circulation drying device for preparing dried yellow croaker according to claim 1, characterized in that: An inner cylinder (7) is arranged inside the installation cylinder (5), a plurality of air outlet holes (8) are provided on the inner cylinder (7), and the activated carbon is located between the installation cylinder (5) and the inner cylinder (7), one end of the circulation pipe (401) extends into the interior of the inner cylinder (7), and a plurality of air inlet holes (405) are provided on the end of the circulation pipe (401) extending into the inner cylinder (7).

4. The cold air circulation drying device for preparing dried yellow croaker according to claim 3, characterized in that: The top of the installation cylinder (5) is provided with an opening, and a sealing cover (404) is installed on the circulation pipe (401).

5. The cold air circulation drying device for preparing dried yellow croaker according to claim 1, characterized in that: One end of the circulation pipe (401) is connected to the bottom of the side wall of the drying box (1), and the circulation pipe (401) is provided with an air suction pump (402) and a water suction box (403), and the water suction box (403) is filled with a desiccant.

6. The cold air circulation drying device for preparing dried yellow croaker according to claim 1, characterized in that: A water collecting mechanism (18) is provided at the bottom of the drying box (1), and the water collecting mechanism (18) comprises a water collecting box (1801), the water collecting box (1801) is connected to a first water collecting pipe (1802), the first water collecting pipe (1802) is connected to two second water collecting pipes (1804), a water collecting bucket (1805) is fixed at one end of the second water collecting pipe (1804), the water collecting bucket (1805) is connected to the bottom of the drying box (1), and a valve (1803) is installed on the first water collecting pipe (1802).

7. The cold air circulation drying device for preparing dried yellow croaker according to claim 1, characterized in that: A driving motor is installed at the bottom of the drying box (1), and an output shaft of the driving motor is connected to the mounting cylinder (5).

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