Fish Drying Methods

There are many types of dried fish, which are made by fully drying fresh fish. Both marine and freshwater fish can be made into dried fish. Dried defatted fish is made of high-quality fresh fish as raw material, and is refined through high-temperature cooking, drying and other procedures, and all indicators meet the standards stipulated by the state.
There are two kinds of drying of fish, one is to use the sun to dry, and the other is to use the dryer to dry. The traditional drying method is sun-drying, which is economical and economical, but in rainy days, it cannot be sun-dried, resulting in losses. Moreover, the traditional drying of dried fish will cause contamination of dried fish and bacteria. The fish dryer uses a closed-loop design, which is not affected by the weather, and there is no need to worry about the dried fish being polluted. The drying speed is fast, the efficiency is high, and the labor cost is reduced.

The methods of drying fish
1. According to the size of the fish, two forms of dorsal and ventral are used. The back section is generally used for large and thick fish. When cutting, the knife is inserted from the second scale under the dorsal fin of the fish, and when the knife reaches the skull of the fish, it is slightly inclined to cut in the middle of the skull. Remove the internal organs and tooth mounds, and gently scrape off the blood stains on the spine and the black mucosa in the abdomen with a razor blade. If the fish is large, it should be under the back bone and in the thick part of the meat on the other side. After dissection, the internal organs are removed.

2. Washing: Wash the de-viscered fish in sea water to remove the dirt and mucus on the inside. Then the two meat noodles are spread out and stacked on top of each other, and placed in a clean container to drain the water and wait for drying. Prevent the meat surface from turning red due to random stacking.

3. Salting: Determine the amount of salt according to the size of the fish, generally 18-24 kg of salt per 100 kg of fish. Winter and spring are less, summer and autumn are more. When marinating, rub the salt evenly over the fish. Then put it in the pickling pool. After 4 to 5 hours, add a layer of sealing salt, cover the surface with bamboo, and press the stone. Immerse the fish in brine to fully absorb the salt and remove the water.

4. Drying: wash the fish body once to remove the contaminated dirt, drip dry water, and then discharge it on a special drying tray. Advance the drying room for dried fish, turn on the control panel of the main engine for drying, and the drying process is fully controlled by the computer version without manual duty. Generally, the drying time of marine fish is about 22-28 hours. It can also be hung in the sun to dry.

If traditional air-drying relies on natural air-drying, a large area of drying field is required. Affected by the weather, the labor intensity is high, and it is easy to breed flies and food hygiene. The sulfur content exceeds the standard, the color and luster are different, and the temperature and humidity are difficult to control. Therefore, under this background, to simulate the environmental conditions of natural drying, the high-efficiency heat pump dehumidifier at room temperature was developed and used in the drying process of fish and other aquatic products.
The normal temperature drying system uses the principle of low dew point dehydration to forcibly circulate the dry air in the drying room, so that the water content is gradually reduced to achieve drying. The low-temperature and low-humidity air continuously absorbs the moisture on the surface of the food in the forced circulation, and the air that reaches the saturated state is dehumidified by the high-efficiency dehumidification unit. The normal temperature drying system is a special processing method that simulates the natural air-drying environment in winter in the warehouse.
Next, I share with you some of the best-selling fish dryers.

1. Fish dryer room

The first type of dryer is the fish dryer room. The fish dryer room is equipped with a trolley with trays and tray racks. When we dry the fishs, we put the fishs in the tray, on the tray rack of the cart, and push it into the fish drying chamber to dry. Fishs are putted on the shelf car and enter the closed cycle drying room for drying without any pollution in the process. The heat source of the fish dryer room is air. The heat in the air is absorbed by the heat pump compressor. After being compressed and released, a large amount of high-temperature hot air can be obtained, so as to achieve uniform drying and processing of fishs.

Components of fish dryer room

One set fish dryer room contains: heat pump dryer host, dryer chamber, fan frame with fan, trolley with tray. The dryer chamber is used 100mm polyurethane insulation board, supporting 304 stainless steel trolleys and trays. The main structure of the fish dryer room is divided into: heat pump drying dehumidifier, drying room, hot air circulation system, dehumidification system, automatic intelligent control system, and high-efficiency waste heat recovery dehumidification device.

The working principle of fish dryer room

The heat pump food dehydrator room uses the reverse Carnot principle to let the hot air circulating blower dehydrated food. Compressor and other equipment make The fish heat pump dryer uses the reverse Carnot principle to let the hot air circulating blower dry the vegatable. Heat Pump Dryer Compressor Heat Exchanger Blocked Radiator (External to Machine). Compressor and other equipment make up the refrigerant circulation system. The fan impeller rotates, the outside air enters the oven, passes through the heater, forms hot air, and then enters the studio through the gap of the air distribution plate, and a large amount of hot air in the circulating flow continues to enter the new air inlet for supplementation. The moisture discharged after recovery is discharged from the exhaust port. The whole cycle makes the vegatable heated evenly and achieves the purpose of drying.

Technical parameters of fish dryer room

heat pump dehydration room list
type	machine size(MM)	Capacity (KG)	power	Qty of fan	fan power	total power（kw）	Qty of cart	Qty of tray	cart size(MM)	tray size(MM)
3P A	3500×2200×2200	200-400	2.25	6	0.25/pc	3.75	6	78	670×810	600×800
8P A	5300×2200×2800	450-750	6	12	0.37/pc	10.44	6	156	1210×870	600×800
15P	7500×3000×2800	900-1500	11.25	12	0.55/pc	17.85	12	312	1210×870	600×800
1P D	1180×680×1800	50-80	1	—	—	1	—	15	—	600×800
3P D	2100×930×2100	120-300	3.5	—	—	3.5	—	40/60	—	600×800
8P D	4000×1960×2050	650-1000	8	—	—	8	8	232	600×800	600×800
The drying machine can be equipped according to the user's requirement and the production demands.

Advantages of fish dryer room

1 Wide application. Suitable for vegetable, fruit, seafood, spice etc different kinds of material.
2 High drying capacity. Each hour can drying 3-4kg water.
3 Better drying effect. Can better keep material shape , color , nutrition etc.
4 Simple operating. PLC touch screen control panel , can set up temperature, humidity in advance  
5 Low energy consumption. Heat pump system, can save 70% energy.

Other application areas of fish dryer room

Heat pumps dryer can be used in many applications, in addition to drying fishs can also be used in agriculture, industry, seafood, grain, herbal medicine, construction, paper products, condiments, mineral industry, etc.
1. Dried fishs such as radish, lettuce, pumpkin, carrot, spinach, cassava, etc.
2. Fruits such as apples, lemons, mango slices, dried longan, dried longan, etc.
3. Dried fish such as sausage, beef, duck, ham, etc.
4. Others it can dry noodles/wooden/incense/herbs/floss etc.

2. All-in-one fish dryer machine

The another one is the all-in-one fish dryer machine. The drying principle is the same as that of the fish dryer room. The all-in-one fish dryer machine is equipped with a cart with trays and tray racks. When drying fishs, we put them in trays, put them on the tray racks of the cart, and then push them into the fish drying chamber for drying.
The heat source of the fish integrated dryer is air energy. The heat in the air is absorbed by the heat pump compressor. After compression and release, a large amount of high-temperature hot air can be obtained, so as to achieve continuous and uniform drying and processing of fishs. The operation of this all-in-one drying unit is relatively simple, simply plug in and dry.

Components of all-in-one fish dryer machine

One set all-in-one fish dryer machine contains: power jack, water outlet,exhaust air outlet, supporting wheels, PLC controller pancl, door lock, observation window,circulating air inlet, outlet for hot and dry air, PP tray, stainless steel tray, supporting racks for trys. The fish all-in-one machine has compact structure, good energy-saving effect, wide application range, high drying quality, convenient operation, simple installation and disassembly. It is the best drying equipment for small businesses, drying experiments and scientific research. The user only needs to connect the power to use, it is the easiest to operate fish dryer.

Technical parameters of all-in-one fish dryer machine

All-in-one food dryer list
type	machine size(MM)	Capacity (KG)	power	total power（kw）	Qty of cart	Qty of tray	cart size(MM)	tray size(MM)
1P	1180×680×1800	50-80	1	1	—	15	—	600×800
3P	2100×930×2100	120-300	3.5	3.5	—	40/60	—	600×800
8P	4000×1960×2050	650-1000	8	8	8	232	600×800	600×800
The drying machine can be equipped according to the user's requirement and the production demands.

Advantages of all-in-one fish dryer machine

1. Stainless steel 304 material. The whole machine uses stainless steel material, can work a long time, and keep better heat preservation, bottom have wheeler, can move easily.
2. Great energy saving. Heat pump system design, low energy consumption, can save 75% energy than traditional electricity element heating.
3. Wide application easy operation. Fit for wide application, seafood, fruit, food, spice, herbs, etc all can use it to dry.
4. Gentle drying. Temperature range 40-80°C, low temperature dehydrate processing can better keep material nutrition, during drying, no need to move the machine.

The above is the method of drying fish that Baixin company explained to you, as well as several kinds of machinery for drying fish. At the same time, our company also produces mesh belt dryers and microwave dryers, and the size and output of the dryers can be customized. If you are interested in the heat pump dryer or have any questions, please feel free to consult us! 

Fish dryer machine video：