JP2005119854A - Bean-curd refuse conveyor and bean-curd refuse conveying method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bean-curd refuse conveyor capable of preventing blocking of bean-curd refuse in a pipe with simple structure and continuously operating for a long time. <P>SOLUTION: The bean-curd refuse conveyor has a rotary valve 3, the pipe 4 communicating with a lower part of the rotary valve 3 through a pipe reduced part 7, and an air supply pipe 4a for supplying compressed air into the pipe 4, and pneumatically carries the bean-curd refuse discharged from the rotary valve 3 with the compressed air jetted from the air supply pipe 4a. The pipe reduced part 7 is constituted so as to be arranged at a position where the temperature of the bean-curd refuse pneumatically carried is ≤40°C. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an okara conveying apparatus for dropping okara from a rotary valve and feeding it.

  As is well known, when a powder such as okara dropped from a hopper is transported from a manufacturing room to the outside by a rotary valve, a conveying device is used which is pneumatically fed using compressed air supplied from a blower. Yes. As shown in FIG. 2, the transport device 100 includes a hopper 101, a rotary valve 102, a pipe 103, an air supply pipe 105 that supplies compressed air in the direction of arrow B, and compressed air to the air supply pipe 105. A reducer 104 is formed in the vicinity of the rotary valve outlet 103a so that the diameter of the pipe gradually decreases toward the downstream side (the right side of the pipe 103 in FIG. 2). Yes.

Another conveying device has been proposed in which compressed air is instantaneously supplied to a pipe to forcibly remove powder adhering to the pipe (for example, see Patent Document 1).
JP-A-6-345264 (paragraph number 0006, FIG. 1)

  However, this transport device 100 can be transported without any problem if it is a dried okara with a low moisture content, for example. However, in the case where the moisture content is about 68 to 73%, the temperature from the rotary valve outlet 103a is about 60 ° C., so that it has high adhesion, and the pipe wall portion of the reducer 104 Okara adheres at 104a. The adhering okara accumulates over time and closes the pipe 103, so that there is a problem that the blower is burdened and overloaded. Therefore, in order to solve this problem, it is necessary to remove the okara accumulated in the reducer 104 frequently, and there is a problem that continuous operation for a long time cannot be performed.

  Further, in the above-described transport device described in Patent Document 1, the powder adhering to the pipe is forcibly removed by the compressed air supplied into the pipe from the compressed air supply port. Construction of a supply device for supplying the air and a secondary pipe for transporting the compressed air is necessary, and there is a problem that the transport device becomes large and the cost is increased. There is also a problem that maintenance of the secondary piping, compressed air supply port, and the like takes time.

  The present invention has been made in consideration of such circumstances, and its object is to prevent occlusion in the piping with a simple structure and to enable continuous operation for a long time. Is to provide.

In order to achieve the above object, the present invention proposes the following means.
The okara conveying apparatus according to claim 1 has a rotary valve, a pipe communicating with the lower part of the rotary valve via a pipe reduction section, and an air supply pipe for supplying compressed air into the pipe. The okara conveying device for feeding okara discharged from the rotary valve by compressed air ejected from the air supply pipe, wherein the temperature of the okara being sent is 40 ° C. It is arranged at the following positions. The okara conveying method according to the present invention discharges okara from the rotary valve, supplies compressed air from an air supply pipe that opens at the lower portion of the rotary valve, and communicates with the lower portion of the rotary valve by the supplied compressed air. An okara conveying device for pneumatically feeding okara through a piping reduction section and piping,
After the temperature from okara reaches 40 ° C., the pipe shrinking section is passed.
The okara conveying apparatus according to claim 2 is characterized in that the pipe reducing portion is installed at a position 2 meters or more away from the outlet of the rotary valve.

  According to the present invention, since the piping reduced portion is disposed at a position where the temperature from the okara is 40 ° C. or lower, the okara is sufficiently cooled and the adhesive force is reduced, so that the deposit can be deposited in the reduced portion. Absent. Therefore, it is possible to prevent the piping from being blocked due to the accumulation of okara, and it is possible to operate continuously for a longer time. In addition, according to the present invention, since the pipe reduction part is installed at a position 2 meters away from the outlet of the rotary valve, the okara is cooled sufficiently and the adhesion is reduced, so that it accumulates in the reduction part. There is no. Therefore, it is possible to prevent the piping from being blocked due to the accumulation of okara, and it is possible to operate continuously for a longer time.

  According to the present invention, the pipe shrinking portion is disposed at a position where the temperature of the aired okara is 40 ° C. or less, so that even if the aired okara comes in contact with the pipe reducing portion, the air is deposited. Therefore, there is no need to frequently remove the forehead from the pipe reduction part, and a continuous operation for a long time is possible. Since it is not necessary to perform the removal work, work efficiency can be improved.

Hereinafter, an okara conveying apparatus according to an embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, the okara conveying device 1 is similar to the one shown in FIG. 2 described above. A hopper 2 is supplied with okara from an okara supply line (not shown), and okara supplied from the hopper 2 is described later. The rotary valve 3 for transferring to the pipe 4 to be transported, the pipe 4 for feeding the okara supplied from the rotary valve 3, and the okara supplied into the pipe 4 on the downstream side (in FIG. The air supply pipe 4a that supplies compressed air to air (right side) and a blower (not shown) that supplies compressed air to the air supply pipe 4a.
The pipe 4 is an air feed line for air-feeding the okara supplied from the rotary valve 3 to an okara receiving portion (not shown). The pipe 5 installed at the outlet of the rotary valve, the flexible hose 6, and the downstream side As shown in the figure, the pipe diameter is gradually reduced, and a reducer (pipe reduction part) 7 formed so that the pipe diameter gradually decreases, and a downstream pipe 8 connected to an okara receiving part (not shown). Here, the reducer 7 is installed at a position where the okara is 40 ° C. or less. A flexible hose 6 for connecting the pipe 5 and the reducer 7 is connected between the pipe 5 and the reducer 7.

  When carrying out the conveyance from the Okara conveyance apparatus 1 which consists of said structure, first, Okara is supplied to the hopper 2 from the Okara supply line which is not shown in figure. The okara is supplied to the rotary valve 3 through the hopper 2, mixed with air in the rotary valve 3, and supplied to the pipe 4 installed at the lower part of the rotary valve 3. Compressed air is supplied into this pipe 4 from a blower (not shown) via an air supply pipe 4a in the direction of arrow A, so that okara passes through the reducer 7 in the pipe 4 and is downstream. It is aired to an okara receiving unit (not shown) installed on the side.

  Here, it is 60 ° C. at the rotary valve outlet 5 from the aired okara, but as a result of verification by the present inventor, it has been found that the adhesive strength decreases when the temperature falls below 40 ° C. That is, okara comes in contact with the tube wall 7a of the reducer 7 when being aired, but by installing the reducer 7 at a position where the temperature from the okara is 40 ° C. or less, Is sufficiently cooled to reduce the adhesive force, thus preventing the accumulation of okara. The reducer may be provided at a position 2 meters or more away from the rotary valve outlet, and the same effect can be obtained.

  According to the above configuration, since the reducer is provided at a position where the temperature of the okara is 40 ° C. or less, the okara is sufficiently cooled and the adhesive force is reduced. Accumulation can be prevented. Thereby, since obstruction | occlusion of the piping 4 can be prevented, a blower does not overflow. Further, unlike the conventional case, it is not necessary to frequently remove the accumulated okara, so that continuous operation for a long time is possible. Further, since the structure is simple and no additional device is required unlike the conventional transfer device that forcibly removes the adhered powder, the cost can be reduced.

Examples of the invention according to this embodiment will be described below. In addition, description is abbreviate | omitted about the code | symbol same as the said embodiment.
In this embodiment, the reducer 7 was installed at a position 3 meters away from the outlet of the rotary valve 3. Here, the outer diameter of the pipe 6 is 4 inches, which is reduced to the reducer 7 to be 3 inches. The moisture content of okara used here is 68 to 73%, and the outlet temperature of the rotary valve 3 is 60 ° C.
As a result of carrying out the oak using the okara carrying device 1 in this example, it was confirmed that there was no occlusion in the reducer 7 and there was no problem even if the operation was continued for 10 hours from the start of operation. From the above, when the reducer is installed at the rotary valve outlet as in the prior art, the piping was blocked after 4 hours from the start of operation, so that it is possible to realize a much longer operation. Became.

It is a schematic block diagram of the okara conveying apparatus which concerns on one Embodiment of this invention. It is a schematic block diagram which shows the conventional okara conveying apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Okara conveying apparatus 3 Rotary valve 4 Piping 4a Air supply pipe 7 Piping reduction part (reducer)

Claims (3)

A rotary valve, a pipe communicated with the lower part of the rotary valve via a pipe reduction section, and an air supply pipe for supplying compressed air into the pipe, and the okara discharged from the rotary valve An okara conveying device that is pneumatically fed by compressed air ejected from the air supply pipe,
The said piping reduction | decrease part is arrange | positioned in the position from which the temperature from the aired okara becomes 40 degrees C or less, The okara conveying apparatus characterized by the above-mentioned. 2. The okara conveyor apparatus according to claim 1, wherein the pipe reducing portion is installed at a position 2 meters or more away from an outlet of the rotary valve. Okara is discharged from the rotary valve, compressed air is supplied from an air supply pipe that opens to the lower part of the rotary valve, and the compressed air supplied through the pipe reduction part and the pipe communicated with the lower part of the rotary valve. Okara transporting device,
A method for transporting okara, wherein the temperature of the okara is 40 ° C., and then the pipe reducing portion is passed.

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