Cold air circulation drying device for preparing dried salted yellow croakers

Abstract

The invention discloses a cold air circulation drying device for preparing dried salted yellow croakers, and belongs to the technical field of dried salted yellow croaker processing. The cold air circulation drying device comprises a drying box with one side wall provided with an opening, a box door is hinged to the opening, a mounting cylinder is arranged in the drying box, a plurality of fish hanging mechanisms are mounted on the mounting cylinder, and each fish hanging mechanism is composed of a plurality of mounting rods; the multiple mounting rods are distributed on the side wall of the mounting cylinder in a circumferential array mode, multiple rotating shafts are rotationally mounted on the bottom walls of the mounting rods, and hooks are fixed to the bottoms of the rotating shafts; the interiors of the mounting cylinder and the mounting rod are hollow, the mounting rod is communicated with an inner cavity of the mounting cylinder, a piston block is arranged in the mounting rod, the end, away from the hook, of the rotating shaft extends into the mounting rod, a driving mechanism is arranged between the piston block and the rotating shaft, and an exhaust hole is formed in the mounting rod; the dried yellow croakers can be comprehensively air-dried, cold air circulates continuously, energy consumption is reduced, and the air-drying effect on the dried yellow croakers is improved.

Description

Technical Field

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

[0002] In the production process of yellow croaker dried fish, the dried fish needs to be pickled, and then washed and air-dried. The existing air-drying method mostly adopts natural drying. With the increase of yellow croaker dried fish output and the constraints of production conditions such as site, the existing air-drying method can no longer meet the demand. Natural drying takes a long time and has low drying efficiency.

[0003] After searching, it was found that the patent with the announcement number CN212728655U discloses a device for air-drying yellow croaker dried fish, including a rotating mechanism, a supporting frame, a water collection basin and a plurality of stacked fish cages, the water collection basins are all mounted on the supporting frame, the fish cages are mounted on the supporting frame, a fish rack is arranged in the fish cage, a plurality of fish racks are arranged in a circular array in the fish cage, the yellow croaker dried fish is placed on the fish rack, the surface of the fish rack is inclined, the surface of the fish rack is provided with a drain groove, the side of the fish rack is provided with a vent, the rotating mechanism includes a rotating flange, the supporting frame is fixedly mounted on the rotating flange, the rotating flange drives the supporting frame, the supporting frame drives the fish cage to rotate, when the fish cage rotates, air flows through the vent of the fish rack to air-dry the yellow croaker dried fish; Although this patent can air-dry yellow croaker, there are still some shortcomings: the air-drying efficiency of the dried yellow croaker is still low only by the air flow generated by the rotation of the fish cage, and the dried yellow croaker is placed flat on the fish rack, and it is difficult for the back side to fully contact the air, resulting in poor air-drying effect. Summary of the invention

[0004] The purpose of the present invention is to provide a cold air circulation drying device for preparing yellow croaker dried fish, so as to solve the following technical problems: the air flow drying efficiency of the existing device generated by the rotation of the fish cage is still low, and the yellow croaker dried fish is placed flat on the fish rack, and it is difficult for the back side to fully contact the air, resulting in poor drying effect.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A cold air circulation drying device for preparing yellow croaker dried fish comprises a drying box with an opening on one side wall, and a box door is hinged at the opening, a mounting cylinder is arranged in the drying box, a plurality of groups of fish hanging mechanisms are installed on the mounting cylinder, each group of fish hanging mechanisms is composed of a plurality of mounting rods, and the plurality of mounting rods are distributed on the side wall of the mounting cylinder in a circular array, a plurality of rotating shafts are rotatably installed on the bottom wall of the mounting rod, and a hook is fixed at the bottom of the rotating shaft; The interiors of the installation cylinder and the installation rod are both hollow, and the installation rod is in communication with the inner cavity of the installation cylinder. A piston block is arranged in the installation rod, and 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, and an exhaust hole is opened on the installation rod. The drying box is also provided with an air intake mechanism and a circulation mechanism, a circulation pipe of the circulation mechanism is connected with a mounting cylinder, and the mounting cylinder is filled with activated carbon.

[0006] As a further solution of the present invention: the air intake mechanism includes an air intake pipe and two vertical pipes, the two vertical pipes are fixed on the inner walls on both sides of the drying box, and a plurality of air outlet nozzles are installed in the vertical direction on one side of the vertical pipe facing the mounting tube, the two ends of the air intake pipe are respectively connected to the two air intake pipes, and the air intake pipe is connected to an external air source.

[0007] As a further solution of the present invention: an inner cylinder is arranged inside the installation cylinder, a plurality of air outlet holes are opened on 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 interior of the inner cylinder, and a plurality of air inlet holes are opened on the end of the circulation pipe extending into the inner cylinder.

[0008] As a further solution of the present invention: an opening is provided on the top of the installation cylinder, and a sealing cover is installed on the circulation pipe.

[0009] As a further solution 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 an air suction pump and a water suction box, and the water suction box is filled with a desiccant.

[0010] As a further solution of the present invention: a gear is installed at one end of the rotating shaft located in the mounting rod, a rack is fixed on the side wall of the piston block close to the gear, and the rack is meshed with the gear, a fixing block is installed on the inner wall of the mounting rod, a spring is connected to the fixing block, one end of the spring is connected to the piston block, and a rectangular hole is provided at the end of the mounting rod away from the mounting cylinder.

[0011] As a further solution of the present invention: a water collecting mechanism is provided at the bottom of the drying box, and the water collecting mechanism includes a water collecting box, a first water collecting pipe is connected to the water collecting box, two second water collecting pipes are connected to the first water collecting pipe, a water collecting bucket is fixed at one end of the second water collecting pipe, the water collecting bucket is connected to the bottom of the drying box, and a valve is installed on the first water collecting pipe.

[0012] As a further solution 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 mounting cylinder.

[0013] Beneficial effects of the present invention: (1) The present invention provides a fish hanging mechanism, which cooperates with an air intake mechanism and a circulation mechanism. The air intake mechanism delivers cold air into the drying box, and the dried yellow croaker is hung in the drying box by the fish hanging mechanism to increase the contact area with the cold air. The circulation mechanism circulates the cold air continuously to reduce energy consumption. In addition, activated carbon is provided in the installation cylinder to adsorb fishy smell and volatile gases in the circulating air to avoid secondary pollution of the dried yellow croaker by the circulating air. A piston block is provided in the installation rod. When the air pressure in the installation cylinder gradually increases, the piston block is pushed to move, causing the rotating shaft to rotate, thereby further increasing the contact area between the dried yellow croaker and the air. (2) The present invention provides a water absorption box on the circulation pipe. The desiccant in the water absorption box can absorb the moisture in the circulating air, thereby preventing the circulating air from carrying moisture into the drying box again. The desiccant is replaced regularly to ensure the water absorption performance. (3) The present invention can collect water droplets dripping from the dried yellow croaker for recycling by providing a water collection mechanism, thereby preventing the water droplets from volatilizing in the drying box and affecting the air-drying effect of the dried yellow croaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the first perspective structure of the present invention as a whole; Figure 2 It is a second perspective structural schematic diagram of the present invention as a whole; Figure 3 It is a schematic diagram of the internal structure of the drying box of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the mounting tube and the mounting rod of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the mounting rod of the present invention; Figure 6 It is a schematic diagram of the internal structure of the mounting rod of the present invention; Figure 7 It is a schematic diagram of the structure of the mounting cylinder and the inner cylinder of the present invention in a disassembled state; Figure 8 It is a structural schematic diagram of the water collection mechanism of the present invention.

[0016] In the figure: 1. drying box; 2. box door; 3. air intake mechanism; 301. air intake pipe; 302. vertical pipe; 303. air outlet nozzle; 4. circulation mechanism; 401. circulation pipe; 402. air suction pump; 403. water suction box; 404. sealing cover; 405. air inlet hole; 5. mounting cylinder; 6. mounting rod; 7. inner cylinder; 8. air outlet hole; 9. rotating shaft; 10. hook; 11. exhaust hole; 12. rectangular hole; 13. piston block; 14. fixing block; 15. spring; 16. rack; 17. gear; 18. water collection mechanism; 1801. water collection box; 1802. first water collection pipe; 1803. valve; 1804. second water collection pipe; 1805. water collection bucket.

[0017] The drawings are only used for illustrative purposes and are not to be construed as limitations of the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced in size, and do not represent the size and shape of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figures 1 to 6As shown, the present invention is 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 is hinged at the opening, a mounting tube 5 is arranged in the drying box 1, and a plurality of groups of fish hanging mechanisms are installed on the mounting tube 5, 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 tube 5, a plurality of rotating shafts 9 are rotatably installed on the bottom wall of the mounting rod 6, and a hook 10 is fixed to the bottom of the rotating shaft 9; the interiors of the mounting tube 5 and the mounting rod 6 are both hollow, and the mounting rod 6 is connected to the inner cavity of the mounting tube 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 provided with a plurality of mounting rods 6, and the plurality of mounting rods 6 are provided with a plurality of rotating shafts 9, and the plurality of rotating shafts 9 ... An air intake mechanism 3 and a circulation mechanism 4 are also provided, and a circulation pipe 401 of the circulation mechanism 4 is connected to a mounting cylinder 5, and the mounting cylinder 5 is filled with activated carbon; the box door 2 is opened to hang the dried yellow croaker on the hook 10, and then the box door 2 is closed, and the air intake mechanism 3 is used to deliver cold air into the drying box 1, so as to air-dry the dried yellow croaker more comprehensively, and one end of the circulation pipe 401 is connected to the mounting cylinder 5, and the activated carbon in the mounting cylinder 5 removes the fishy smell and some volatile gases in the circulating air to avoid secondary pollution to the dried yellow croaker, and by providing a piston block 13, the continuously entering gas will cause the air pressure in the mounting cylinder 5 to gradually increase and push the piston block 13 to move, and cooperate with the driving mechanism to rotate the rotating shaft 9, drive the dried yellow croaker to swing, further increase the contact area between the dried yellow croaker and the air, and improve the air-drying efficiency and effect.

[0020] See also Figure 2 and Figure 3 The air intake mechanism 3 includes an air intake pipe 301 and two vertical pipes 302. The two vertical pipes 302 are fixed on the inner walls of both sides of the drying box 1. A plurality of air outlet nozzles 303 are installed in the vertical direction on one side of the vertical pipe 302 facing the mounting tube 5. The two ends of the air intake pipe 301 are respectively connected to the two air intake pipes 301, and the air intake pipe 301 is connected to an external air source. The external air source is used to provide cold air, and the cold air is sprayed out from the plurality of air outlet nozzles 303 after passing through the air intake pipe 301 and the vertical pipe 302, so as to evenly air-dry the dried yellow croaker.

[0021] See also Figure 3 , Figure 4 and Figure 7 An inner cylinder 7 is arranged in the mounting cylinder 5, a plurality of air outlet holes 8 are provided on the inner cylinder 7, and the activated carbon is located between the mounting cylinder 5 and the inner cylinder 7, one end of the circulation pipe 401 extends into 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; an opening is arranged on the top of the mounting cylinder 5, and a sealing cover 404 is installed on the circulation pipe 401; the activated carbon is located between the mounting cylinder 5 and the inner cylinder 7 for easy replacement, the circulation pipe 401 is inserted into the inner cylinder 7, and 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.

[0022] See also 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. The water suction box 403 is filled with a desiccant. The air suction pump 402 is used to suck the gas in the drying box 1 into the circulation pipe 401 and then discharge it into the installation tube 5. The gas passes through the desiccant in the water suction box 403 to absorb moisture, thereby preventing moisture in the air from entering the drying box 1 again.

[0023] See also Figure 5 and Figure 6 A gear 17 is installed at one end of the rotating shaft 9 located in the mounting rod 6, and 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, and a spring 15 is connected to the fixing block 14. One end of the spring 15 is connected to the piston block 13, and a rectangular hole 12 is provided at the end of the mounting rod 6 away from the mounting cylinder 5; when the piston block 13 moves, the spring 15 is compressed, driving the rack 16 to move, so that the two gears 17 and the rotating shaft 9 rotate, and when the piston block 13 moves to the exhaust hole 11, the circulating air is discharged through the exhaust hole 11, and the piston block 13 is reset under the action of the spring 15, and the rotating shaft 9 is driven to rotate again, so that the yellow croaker on the hook 10 is in a swinging posture, further increasing the contact area with the cold air, and the rectangular hole 12 is to facilitate the extension of the rack 16.

[0024] See also Figure 1 and Figure 8 The bottom of the drying box 1 is provided with a water collecting mechanism 18, which includes a water collecting box 1801, a first water collecting pipe 1802 is connected to the water collecting box 1801, two second water collecting pipes 1804 are connected to the first water collecting pipe 1802, 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; a driving motor is installed at the bottom of the drying box 1, and the driving motor The output shaft is connected to the mounting cylinder 5; since the dried yellow croaker is air-dried after being pickled and washed, sewage will drip. The dripping water droplets are collected by the water collecting bucket 1805, and the valve 1803 is opened regularly to discharge the sewage into the water collecting box 1801 to prevent the water droplets from volatilizing in the drying box 1 and affecting the air-drying effect of the dried yellow croaker. At the same time, the sealing cover 404 and the mounting cylinder 5 can be connected in a rotating sealing manner, and the driving click can drive the mounting cylinder 5 to rotate, which will further improve the contact effect between the dried yellow croaker and the cold air.

[0025] Working principle of the present invention: (1) Pretreatment of large yellow croaker: clean the surface of large yellow croaker with water, remove the scales, gills and internal organs, cut the yellow croaker into butterfly slices along the abdomen with a knife, wash and dry them for later use; (2) Marinate: Pour the sliced ​​yellow croaker into an ultrasonic container, add the prepared salt, monosodium glutamate, glucose, white wine and other seasoning solutions, and control the temperature between 5℃ and 10℃. The ultrasonic power is 1000-1500W, the frequency is 60-80kHz, the interval time is 2-5S, and after treating for 40-60min, rinse with clean water to wash away the juice on the fish surface; (3) Air drying and dehydration: Open the oven door 2 and hang the dried yellow croaker on the hook 10, then close the oven door 2, use the air intake mechanism 3 to deliver cold air into the drying oven 1, so as to air dry the dried yellow croaker more comprehensively, start the suction pump 402, use the suction pump 402 to suck the gas in the drying oven 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, which can absorb moisture and prevent moisture in the air from entering the drying oven 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, and avoids secondary pollution to the dried yellow croaker, by setting the piston block 13, the continuous inflow of gas will cause the air pressure in the installation cylinder 5 to gradually increase. The pressure gradually increases and pushes the piston block 13 to move. After the piston block 13 moves, the spring 15 is compressed, driving the rack 16 to move, so that the two gears 17 and the rotating shaft 9 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 is reset, and the rotating shaft 9 is driven to rotate again, so that the dried yellow croaker on the hook 10 is in a swinging posture. In addition, due to the presence of the piston block 13, the contact time between the circulating air and the activated carbon can be increased, thereby improving the adsorption effect. The sewage dripping from the dried yellow croaker is collected by the water collecting bucket 1805, and the valve 1803 is opened regularly to discharge the sewage into the water collecting box 1801, so as to prevent the water droplets from volatilizing in the drying box 1 and affecting the air-drying effect of the dried yellow croaker. It is worth mentioning that air drying is divided into three stages: the first stage: cold air temperature 5-10℃, wind speed 1.2-2m / s, cold air circulation drying 150-180min; the second stage: cold air temperature 15-20℃, wind speed 1.5-3m / s, cold air circulation drying 100-120min; still for 30-60min (to balance the moisture content of the product); and the third stage of cold air circulation drying, cold air temperature 45-65℃, wind speed 2-3m / s, cold air circulation drying 20-30min; until the moisture content of the fish body is 40-50%.

[0026] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage 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); a circulation pipe (401) of the circulation mechanism (4) is connected to a mounting cylinder (5); and the mounting cylinder (5) is filled with activated carbon.

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 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).

7. 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).

8. 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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