JPH0534881U - Multi-stage band dryer - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide a band dryer for small fish band dryers with long bands in the chamber, with no drying unevenness at the beginning and end of drying. [Structure] The dryer main body 1 is divided into three drying ranges by a partition plate 9. For each drying range, a heat exchanger 4 is installed in a duct provided at the top of the blower 5 and the main body inlet, an exhaust fan is also provided for each section, and 6 is an exhaust port. 5 stages of band-shaped conveyors 2 are installed,
The first and fifth stages are out of the dryer main body 1. The one end of the second stage is installed outside the first stage so that the material to be dried carried in from the first stage will drop to the one end of the second stage when it reaches the other end. Same configuration below. Heat transfer tubes 3 above and below the conveyor 2
Is installed, and a rectifying plate is installed between the outlet of the heat exchanger 4 and the heat transfer tube 3 at each stage. A temperature sensor is provided for each drying range, and the temperature of the blower 5, the exhaust fan, the heat exchanger 4, and the heat transfer tube 3 is adjusted by adjusting the supply of the heat source.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to the structure of a band dryer for small fish.

[0002]

[Prior Art]

 Band drying is often used as hot-air drying as a method for automating and mechanizing the drying of small fish. For band drying, a single-stage or multi-stage endless wire mesh band or a conveyor in which perforated plates are bound is driven at a low speed by an electric motor, and the food to be dried is continuously fed onto the band from one end by an feeder, Alternatively, it is a method of blowing hot air from below onto the material to be dried on the band to dry it. Although the temperature can be raised in the initial drying, if the drying progresses to a certain extent, the drying speed will decrease, so increasing the drying temperature often burns the material to be dried. Therefore, in order to enhance the commercial value of the dried product, it is often dried without raising the temperature.

Therefore, when the drying temperature is about 60 to 100 ° C., the drying time is often 2 to 4 hours. Therefore, the length of the band is lengthened and the transport speed of the band is adjusted. Many are dry. Therefore, when the material to be dried is introduced at the beginning of drying, the food to be dried is placed on only a part of the first stage band, so the speed of transporting the band may be increased or the temperature may be lowered than usual. This prevents dry mud at the beginning of drying.

[0004]

[Problems to be solved by the device]

 The problem to be solved by the present invention is to supply a band dryer having a long band length in the refrigerator at the beginning and at the end of drying without unevenness in drying.

[0005]

[Means for Solving the Problems]

 In the case of a band dryer having a long drying time, in order to extend the drying time in the refrigerator, several bands are used and the length of each band is increased. For this reason, the dryer itself has a long and slender rectangular shape, and several fan and exhaust fans are installed. As shown in Fig. 1, one forced draft blower and its corresponding exhaust fan are divided into one section, and a partition plate is provided between the drying range and other drying ranges, and a heat exchanger is provided on the hot air supply side. The heaters provided above and below the belt in the drying range are temperature-controlled to be dried independently of other drying ranges.

When the food to be dried begins to be put into the dryer and the material to be dried is placed on the first band, as shown in FIG. 1, the heat exchanger and the heater in the drying range at the left end are used. Supply the heat source, and supply the heat source to other areas with no or less than normal. In addition, before or after the material to be dried reaches the next drying range, the heat source is normally supplied to the heat exchangers and heaters in the next range.

[0007]

[Action]

 Because the heat source to the forced air blower, exhaust fan, heat exchanger, and heater can be adjusted for each drying range in the dryer, even if there is no food to be dried in each stage band, the food to be dried on the band It can be adjusted with or without the amount, and it is possible to supply dry food with little unevenness.

[0008]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an example in which the drying range is 3 and the band is 5 stages. Several stages of band-shaped conveyors (2) are installed in a rectangular box-shaped dryer main body (1), and one end of the first and last conveyors (2) is connected to the dryer main body ( Put it out of 1). The dried product carried in from one end of the first transfer conveyor (2) is transported to the other end of the transfer conveyor (2), reaches the other end, and drops to one end of the second transfer conveyor. One end is set outside the one end of the first stage. Similarly, the one end of the third stage is installed outside so that it drops from the other end of the second stage to the one end of the third stage. Similarly, the position of the transfer conveyor (2) is set up to the final stage.

A blower (5) is provided above the dryer main body (1), a duct is provided from the blower outlet to the dryer main body (1), and a heat exchanger (4) is provided in the duct near the dryer main body inlet. Set up. As shown in Fig. 1, when three sets of blowers are installed, a partition plate (9) is installed in the dryer main body, and each partition is separated from each other within the partition plate. Then, the heat transfer tubes (3) are installed above and below the transfer conveyor (2). Further, the exhaust fan (10) in the separated area is also installed independently of the other areas.

In order to eliminate the uneven flow of hot air in the dryer, as shown in FIG. 2, at the outlet of the heat exchanger, the straightening vanes (13) and the straightening vanes (13) between the heat transfer tubes (3) of each stage are provided. Set up. Also, when the exhaust fan (10) is installed on only one side, the suction is biased to one side, so the suction port should be extended to the center of the dryer main body and a cut or straightening plate should be provided on the top. A temperature sensor is provided for each drying range in the dryer body, and the temperature of the fan is adjusted by adjusting the supply of heat to the blower, exhaust fan, heat exchanger and heat transfer tube.

[0011]

[Effect of the device]

 By carrying out the present invention, uniform drying can be obtained by continuously or discontinuously adding a dried product that requires long drying in a band dryer. Moreover, since the drying temperature is not high, a glossy dried product with less drying and burning can be obtained, and since there is little uneven flow in the hot air for drying, a dried product with less unevenness in drying can be obtained as a whole.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

[Explanation of symbols]

 1 Dryer Main Body 2 Transport Conveyor 3 Heat Transfer Tube 4 Heat Exchanger 5 Push-in Blower 6 Exhaust Port 7 Carry In Port 8 Carry Out Port 9 Partition Plate 10 Exhaust Fan 11 Straightening Guide Plate 12 Guide Straightening Plate 13 Straightening Plate

Claims (1)

[Scope of utility model registration request] A dryer main body in which several sets of heaters are provided on both sides of a conveyor of several stages and a band conveyor, a blower duct provided with a blower and a heat exchange heater in the upper part of the dryer main body, and an exhaust port in the lower part of the main body of the dryer. In an apparatus for drying small fish, which is provided with an exhaust duct and an exhaust fan, and a carry-in port at the upper part of the drying device body and an carry-out port at the lower part of the drying device body, one blower and the corresponding exhaust fan are separated as
A partition plate is provided between the drying range of the main body of the drying device and the drying range of another blower, and a rectifying plate is provided on the blast side of the heat exchange heater and on the upper part of the band transfer device to dry small fish. apparatus. ..