KR0130127B1 - Method of dry with rotary type of hot wind circulation and the dryer - Google Patents

Abstract

The present invention relates to a method and apparatus for continuously blowing a soft product (5) by blowing hot air (4) while rotating the drum (2).

When the drum 2 installed inside the drying tube 1 rotates, the soft product 5 introduced into the inlet 7 collides with the shielding plate 3 and falls to the bottom to be suspended by the blown hot air 4. After drying, the dried soft product 5 is blown out to the outlet 6 side, and the used hot air 4 enters the burner along the hot air 4 circulation port 15 of the upper part, thereby saving a lot of energy. have. Since the hot air 4 is blown in as the drum 2 rotates, the soft product 5 is floated, dried, and flows continuously from the inlet 7 side to the outlet 6 side, and is continuously taken out from the outlet 6.

Description

Flow rotary hot air circulation drying method and apparatus

1 is a cross-sectional view schematically showing a longitudinal drying apparatus according to the prior art.

Figure 2 is a schematic side cross-sectional view of a flow rotary hot air circulation drying apparatus according to the present invention.

Figure 3 is a schematic front sectional view of a flow rotary hot air circulation drying apparatus according to the present invention.

Figure 4 is a system configuration of the flow rotary hot air circulation drying apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

1: drying tube 2: drum

3: shielding plate 4: hot air

5: softened product 6: outlet

7: inlet hole 8: plunger

The present invention relates to a flow rotary hot air circulation drying method and a device thereof, and more particularly, to a drying device and a drying method for continuously drying the dried soft product by drying the soft product in a floating state in a hot air in a rotating drum. .

Generally, it is a kind of spice material such as instant noodles such as ramen noodles and bowl noodles. It is round, half-moon shaped, swirled, mandarin slices, patterned cinnamon, panda, other animal-like fish jelly or dried products. Is being used.

In Japanese Patent Publication No. 54-11377, as one of the manufacturing methods for these dried soft products, fish meat is mixed with salt and the like to be thermally solidified to crush the raw material, which is produced as a soft product having elasticity and suitable stickiness. A method of rapidly heating a slice obtained by thinly cutting a soft product with microwaves is disclosed. However, according to this method, since the microwave heating is difficult to perform uniformly, there is a problem that the resulting dried product is curved. That is, in the manufacture of instant surfaces, it is because the soft product cannot be placed on the purified water supply line in a curved state. In addition, the microwave heating has a long drying time, and the heat affects not only the protein in the product more than necessary, but also loses the flavor and the taste is deteriorated. In addition, in the case of giving a special shape or color to the soft product, if the curvature occurs due to drying, the shape disappears or cracks occur, which impairs the aesthetics and loses the value of the product. There is a problem in that the post-treatment process cannot be performed because the automatic injection into the sealing wall is impossible.

In addition, as a technique for solving the above problems, there is a Korean Patent Publication No. 92-5368 (hereinafter referred to as a prior patent) of the applicant. In more detail, referring to the cross-sectional view of the first-degree fixed fixed-type drying apparatus 1 ′, this means that the punching plate 3 ′ is installed at the bottom of the cylindrical drum 2 ′ consisting of a large diameter portion and a small diameter portion. The metal mesh 4 'is provided in the upper part, and the exhaust hole 8' is provided in the government of the drum 2 '. Reference numeral 7a 'denotes an inlet for soft products, and reference numeral 7b' denotes an outlet which is normally closed. At the time of drying, hot air 5 'is supplied from below the drum, and this hot air is convection in the drum 2'. The cut soft product 6 'is introduced into the hot air atmosphere in the convection state by the pressure air from the inlet 7a', and the soft product 6 'is in a floating state when the hot air is continuously supplied to maintain the convective state. Heated at For example, the hot air is supplied with high temperature dry air at 90 to 120 ° C. at a wind speed of 1 to 8 m per second, and the dried soft product 6 ′ is appropriately taken out from the outlet 7b ′.

However, the hot air drying apparatus of the prior patent has the following problems. The soft products cut by the cutter are weighed and manually put into the drying tube, which takes about 2 to 3 minutes. Therefore, the dry state of the first and the later is changed, which is undesirable for hygiene. In addition, since the moisture content of the dried product immediately after being introduced into the drying tube is about 50 to 60% and the specific gravity is heavy, a large amount of hot air must be supplied to float and flow the dried product. In addition, drying progresses and the content of moisture is reduced. Therefore, the specific gravity is light and the flow and flow are swirled, so that the products collide with each other and the defects occur in the product.Therefore, it is necessary to reduce the amount of hot air to make the proper flow and flow. It requires a high level of skill. The hot air introduced into the drying pipe passes through the fixed punching board and is rectified to float and flow the dry items. Some dry items stay on the punching board, resulting in poor drying. Therefore, a stirring bar is attached to the punching board. Stirring the to-be-dried material to prevent the staying, at this time, the to-be-damaged bar is damaged by the stirring bar to generate a defective product, because the drying tube is a fixed type may be attached to the wire mesh, which is also a defective product. Since the fixed drying tube is a batch type, non-uniformity occurs in the moisture content of the dried product for each batch, and since it is sealed until it is taken out, the moisture content cannot be measured and there is a problem that the non-uniformity must be reduced by the skill of the operator. In addition, because of the batch type, unnecessary power and fuel are consumed until the dried product is taken out and the dried object is reinserted. When drying is completed, stop the drying device and manually take out the dried smoked product in the drying pipe with a mechanism such as a rake.

Therefore, the object of the present invention was devised to solve the above problems, it is possible to maintain the aesthetics even if it can be dried flat without drying curves, it is possible to dry in a short time, continuous drying and easy to operate It is to provide a hot air drying method that can save energy and a drum is a transverse horizontal type rotary device.

In order to achieve the above object, the present invention is characterized in that it is dried by flowing continuously in accordance with the rotation of the drying tube while being dried in a state of floating in the hot air by introducing a soft product frozen in a predetermined form into a hot air atmosphere. I am doing it.

The reason why the soft products are dried in the hot air is that the individual soft products are uniformly heated, so that the soft products are uniformly and rapidly evaporated to dry out to a flat and good quality dry product.

In the present invention, the fan, blower fan, exhaust fan, the drum is rotated and the burner is ignited, and hot air having a temperature of 80 to 110 ° C. is supplied at a wind speed of 5 to 6 m every second at the inlet, and at a speed of 2 to 4 m every second to the outlet. The drum is rotated 4 to 10 minutes every minute and the cutter is operated while the drum is held horizontally to adjust the thickness to a predetermined thickness, for example, 1 to 3 mm, and the amount of cutting for 1 minute is adjusted to 3 to 6 kg. And put the dry item into the drying pipe by operating the feeding fan. About 20 to 30 minutes after the start of the input, the outlet switch is properly opened to continuously take out the dried product. At this time, moisture is measured and fine adjustment is carried out so as to reach a predetermined moisture. The fine adjustment method can be easily performed by adjusting the hot air temperature or adjusting the inclination angle of the drum. Moreover, taking out also becomes easy when the inclination is maximized after completion of drying.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a side cross-sectional view of the drying apparatus 100 according to the present invention. The frozen soft product 5 is cut in a cutter (not shown) to a predetermined thickness, for example 1 to 3 mm thick. The cut soft products (5) are screened through a reticulated feeding vibration (not shown) to sort out the defective products before being put into the soft product inlet (7), and only the good soft products (5) by the blowing fan. Blowing air is injected into the inlet (7). Blowing blow air volume is performed by blow blowing blow adjustment damper (B). What is necessary is just to adjust the injection amount about 3-6 kg in 1 minute. The injected soft product 5 falls to the inlet side by the shield plate 3. The drying pipe 1 is fixed, the drum 2 therein is rotatably installed, and a hot air inlet 14 is formed at the lower part thereof, and an exhaust port 11 of the hot air 4 is formed at the upper part thereof. The circulation port 15 is formed. The drum 2 rotates 4 to 10 minutes every minute. The drum 2 is perforated with a number of holes through which hot air can pass, and is coated with Teflon, so that the soft product 5 does not adhere to the drum 2 being dried. The injected soft product 5 is suspended in the drum 2 by the rotation of the drum 2 and the hot air 4 and dried at the same time. The temperature of the hot air is in the range of 80 to 110 ° C., most preferably 100 ° C., and the wind speed is 5 to 6 m per second on the inlet 7 side, and 2 to 4 m per second on the outlet 6 side. At this time, the air flow rate of the hot air (4) is a large air volume (H), the middle air volume (M) in the middle portion, the high air volume (M) on the inlet (7) side, because the humidity of the soft product (5) just introduced into the inlet (7) L), the amount of hot air is adjusted by two or more dampers B provided at the hot air inlet.

Under the conditions described above, the dried product is dried for about 20 to 30 minutes, the moisture content of the soft product is measured, and the measured water content is appropriately opened to take out the dried soft product continuously. Since the inclination angle of the drum 2 can be adjusted by the plunger 8, adjusting the inclination angle of the drum 2 with the plunger 8 makes it very easy to pull out the dried soft product 5. Since the soft product 5 is taken out while rotating the inside of the drum 2, there is no defective product which arises by using mechanisms, such as a rubber lathe of a prior art.

3 is a front sectional view of the drying apparatus 100 according to the present invention. The hot air (4, upper part of the drawing) which dried the soft product 5 is not exhausted to the outside air, and as shown in FIG. It is communicated by the adjustment damper (A)} and a part of hot air is recovered and can be reused, and energy is greatly saved. The adjustment of the circulating hot air volume is performed by the circulating air volume adjusting damper D. FIG. In addition, since the air containing moisture or impurities at the time of drying is collected on both sides of the upper portion of the drying pipe (1), the exhaust pipe 11 is installed here to discharge only a small amount of waste hot air to the outside air by the exhaust fan. The amount of displacement can be adjusted by the exhaust air volume control damper (C).

Drying method according to the invention, the step of rotating the drum (2) at 4 to 10rpm, blowing the hot air (4) having a wind speed of 2 to 6m per second and a temperature of 80 to 110 ℃, and cut soft products (5) is screened with a reticulated feed vibration feeder and then fed into the inlet (7) by the feeding fan, and the introduced soft product (5) to fall to the inlet of the drying tube (1) by the shielding plate (3) Drying in the rotating drum 2, circulating and discharging waste air at the same time as circulating the hot air 4 used for drying, measuring moisture of the soft product 5, and moisture of the soft product. Adjusting or exposing the hot air temperature so that the content becomes a predetermined moisture, the step of adjusting the inclination angle, and the step of taking out the soft product (5) dried by the outlet (6).

EXAMPLE

The frozen soft product (5) formed by a predetermined method was cut to a thickness of 1.5 mm, cut 4.3 kg per minute, and hot air having a temperature of 100 ° C. was introduced at a rate of 5.5 m per second on the inlet side and 3.7 m on the outlet side. It is introduced into the drum 2 which rotates by rotation. The soft product 5 introduced into the inlet is sufficiently floated and flows and is gradually moved to the ejection outlet, thereby lowering the floating and flow.

While maintaining this state, the water outlet was opened so that the soft product was taken out 2.0 kg per minute after 30 minutes, and the drum was inclined so that the water content of the dried product continuously taken out was 13.6%. The used fuel per hour was 55 kg in LPG.

According to the soft product drying method and apparatus according to the present invention configured as described above, since the soft product is continuously added, it can be dried at the same dryness and the flow can be continuously flowed by the rotation of the drum (2). It is not necessary so that the moisture content can be measured from time to time, so it is possible to maintain the optimal drying state at all times, and to save energy by circulating and reusing the used hot air, and to save the dried product by adjusting the inclination angle of the plunger after drying. It is easy to take out.

Claims (10)

In a flow rotary hot air circulation soft product drying apparatus having a hot air inlet and an exhaust port, and an inlet and an outlet of a soft product, the hot air inlet 14 has a lower portion, and a hot air circulation inlet 15 and an exhaust outlet 11 in the upper portion. The drying tube 1 and a plurality of holes are drilled and rotatably installed in the drying tube 1, the inlet 7 at one end, the outlet 6 at the other end, and the outlet 7 at the side. A drum (2) having a shield plate (3), a damper (B) for adjusting the amount of hot air, and a plunger (8) for adjusting the inclination angle of the drum (2). Drying equipment. 2. Drying apparatus according to claim 1, wherein the drum (2) is coated with Teflon. In the rotation flow type hot air circulation soft product drying method for inputting, drying and taking out a soft product into a hot air atmosphere, rotating the drum (2), blowing hot air (4) into the drum (2), Sorting the cut soft products (5) with a reticulated feed vibration feeder and feeding them into the inlet (7) by a blowing fan; and rotating the inserted soft products (5) to fall to the inlet by the shielding plate (3). Drying in the drum (2), circulating the hot air (4) used for drying, discharging waste at the same time as the circulation of the hot air (4), and dried soft product from the blowout outlet ( 5) drying method comprising the step of taking out. The method according to claim 3, wherein in the hot air blowing step, three dampers (B) are placed at the inlet (7) side of the soft product (5) to the large air volume (H), and the middle to the middle air volume (M). A drying method, characterized in that the outlet (6) side is adjusted to the amount of extinction (L). 4. Drying method according to claim 3, wherein the drum (2) is rotated at 10 rpm. The drying method according to claim 3, wherein the blowing temperature of the hot air (4) is 80 to 110 ° C. 4. Drying method according to claim 3, wherein the wind speed of the hot air (4) is 2 to 6 m per second. 4. Drying method according to claim 3, characterized in that it is provided with a draw-out adjustment switch for adjusting the moisture content before taking out the dried soft product (5) into the outlet (6). The drying method according to claim 3, wherein the fine adjustment of the moisture content of the soft product (5) is performed by adjusting the temperature of the hot air (4). The drying method according to claim 9, wherein the fine adjustment of the moisture content of the soft product (5) is performed by adjusting the inclination angle of the drum (2) by the plunger (8).