JPH09255161A - Carrier device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carrier device capable of surely detecting the clogging of gels such as agars or devil's-tongues at an early time in screw type carrying mechanism. SOLUTION: In a carrier device wherein a duct 2 installed so as to have a specified inclined angle downward is connected to the entrance part of a screw type carrying mechanism 4 and gels such as agars or devil's tongues supplied from the dust 2 are sent out continuously by the screw type carrying mechanism 4, a capacitance type sensor 5 for detecting clogging is provided in the entrance part of the screw type carrying mechanism 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveying device capable of early and surely detecting clogging of a gel-like substance such as agar or konjac in a screw type conveying mechanism.

[0002]

2. Description of the Related Art Conventionally, in the case of continuously supplying a fixed amount of powdery or granular material or highly viscous material, a supply member such as a hopper, a supply tank, or a duct is connected to an inlet of a screw type transfer mechanism. The carrier is used.

If a powdery material or a highly viscous material is delivered for a long time by such a transporting device, the screw-type transporting mechanism or the duct will be clogged.

Therefore, an overload current detecting means for detecting an overload of an electric motor for driving a screw is provided in a screw type conveying mechanism as disclosed in Japanese Patent Laid-Open No. 63-41307, and a screw type conveying mechanism section is provided. It has been proposed to prevent the clogging of the screw section by rotating the electric motor in the forward and reverse directions for a predetermined time when the clogging occurs and an overload occurs.

[0005]

In the above-mentioned conveying device, since the clogging of the screw portion is detected by the overload current detecting means in the electric motor for driving the screw, the minced agar or konjac is used. In the case of a gel-like material that is mixed with a liquid, there is a problem in that clogging cannot be reliably detected because the load fluctuation due to clogging is small.

Further, when a clogging detection sensor such as an optical sensor is provided in the hopper or the duct, the detection accuracy of the sensor is low and a malfunction occurs. Therefore, agar or konjac with a high transparency and a small color change is formed. There is a problem in that it is not possible to accurately detect a jam of objects.

An object of the present invention is to provide a conveying device capable of early and surely detecting clogging of a gel-like substance such as agar or konjac in a screw type conveying mechanism.

[0008]

In order to solve the above-mentioned problems, the conveying apparatus of the present invention has a structure in which an electrostatic capacity type sensor for detecting clogging of a gel-like material is provided at the entrance of a screw type conveying mechanism. There is.

According to a second aspect of the present invention, there is provided a capacitance-type sensor for detecting clogging, wherein the detection portion of the sensor is at an upper position having a predetermined distance from the outer peripheral surface of the screw at the inlet of the screw type transport mechanism. It is preferable that the supplied gel-like material is arranged at a position outside the deposition area when the gelled material is normal.

[0010]

FIG. 1 is a schematic view showing an embodiment of a carrier of the present invention, in which a gel is prepared by mixing a liquid and an agar or konjac minced product at a predetermined ratio. A screw type mixing mechanism 1 having a screw shaft for forming and delivering the shaped material, and ducts 2 and 2 ′ for conveying the gel type material, which are connected to a discharge port of the screw type mixing mechanism 1 by a switching valve mechanism 3. , A screw type conveying mechanism 4, 4'connected to the lower ends of the ducts 2, 2 ', and a clogging detecting device installed at a connecting portion of the duct 2, 2'and the screw type conveying mechanisms 4, 4'. Capacitive sensor 5,
And 5 '.

In the screw type mixing mechanism 1 described above, the pitch of the spiral threaded portion of the screw shaft 1b is large, and the outer diameter is small so as to have a large gap with respect to the hole diameter of the main body 1a of the conveying section. It is configured to give priority to the mixing function over the feeding function.

The above-mentioned screw type transport mechanisms 4 and 4'have the same structure, and the transport unit main body 6 and the transport unit main body 6 are provided.
The screw shaft 7 is rotatably attached to the screw shaft 7 and has a spiral screw portion for fixed amount discharge, and an electric motor 8 connected to an end of the screw shaft 7.

The details of the mounting portion of the electrostatic capacity sensor 5 for detecting clogging described above are configured as shown in FIG. 2, and the mounting seats 2a, 2 are provided at the lower ends of the ducts 2, 2 '.
a'is formed, and the capacitance sensor 5 for detecting clogging is attached so that the detection portion 5a has a predetermined distance from the outer peripheral surface of the screw shaft 7 at the entrance of the transport portion main body 6. .

An alarm 9 for emitting an alarm sound is attached to the capacitance sensor 5 for detecting clogging described above.

The above-mentioned detection position of the capacitance type sensor 5 is set from the lower end of the duct 2 in order to prevent detection as a clogging when the gel-like material partially rises or jumps up. It is preferable to set it slightly above (10 mm to 300 mm).

The gel material discharged from the screw-type mixing mechanism 1 in the above-mentioned conveying device is supplied to the screw-type conveying mechanism 4 through the duct 2 and dried or cooled by the screw shaft 7 at a predetermined pressure in a fixed amount. Is sent to the heat treatment device or the blending device.

If, for some reason, the gel-like material is stuck to the tip of the screw shaft 7 or the discharge resistance of the discharge port of the main body 6 of the conveying unit becomes large, the spiral screw of the screw shaft 7 will be damaged. Recessed portion, the spiral threaded portion, and the transport portion main body 6
The gel-like material is clogged in the gap between the two, and the clogging progresses sequentially from the discharge side of the transporting unit main body 6 toward the connecting portion with the duct 2, and the gel-like material is detected by the detection unit of the capacitance sensor 5. 5
When it reaches a, the alarm 9 is activated and an audible alarm is emitted to notify the operator that the gel-like material is clogged.

The operator who hears this warning sound changes the switching valve mechanism 3
The pipe is switched to the line of the duct 2'and the screw type conveying mechanism 4'by manual operation, and the gelled substance sent out from the screw type mixing mechanism 1 is sent to the device of the next step.

After the above-mentioned line switching is completed, the duct 2 is separated from the conveying section main body 6 of the screw type conveying mechanism 4, the screw type conveying mechanism 4 is disassembled, and the conveying section main body 6 and the screw shaft 7 are clogged. Remove the gel.

Instead of the screw-type mixing mechanism 1 described above, a supply tank or a hopper having a stirring mechanism may be installed.

The switching valve mechanism 3 is constructed so that the pipeline is switched by a driving means such as a rotary cylinder or an electric motor, and when the clogging is detected and an alarm 9 is activated, the driving means is activated at the same time to switch the pipeline. Switching, supply tank 1
It is also possible to switch the connection with the duct 2 to the duct 2 '.

Alternatively, the line of the duct 2'and the screw type transport mechanism 4'is not provided, and the switching valve mechanism 3 may be closed when the clogging of the gel-like substance is detected by the capacitance type sensor 5. .

[0023]

According to the present invention, the carrying device of the present invention has a structure in which the screw-type carrying mechanism is provided with a capacitance sensor for detecting clogging at the entrance thereof. When the gel-like material is clogged up to the entrance of the screw type transport mechanism, the clogging can be reliably detected, and the gelling-like material can be prevented from being clogged up to the hopper, the duct and the like.

According to a second aspect of the present invention, there is provided a capacitance-type sensor for detecting clogging, wherein a detection portion of the sensor is at an upper position with a predetermined distance from the outer peripheral surface of the screw at the inlet of the screw type transport mechanism. With the configuration in which the supplied gel-like material is disposed at a position outside the deposition area when the gel-like material is normal, it is possible to detect immediately when the gel-like material starts to become clogged.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of a carrying device of the present invention.

FIG. 2 is a schematic sectional view showing details of a detection sensor mounting portion in FIG.

[Explanation of symbols]

 1 Screw type mixing mechanism 2, 2'Duct 3 Switching valve mechanism 4, 4'Screw type conveying mechanism 5, 5 'Capacitance type sensor 6, 1a Conveying section main body 1, 1b Screw shaft 8 Electric motor 9 Alarm

Claims (2)

[Claims] 1. A conveying device for continuously delivering a gel-like material by a screw type conveying mechanism by a predetermined amount, wherein an electrostatic capacity sensor for detecting clogging is provided at an inlet of the screw type conveying mechanism. Transport device. 2. A capacitance type sensor for detecting clogging,
The detection part of the sensor is arranged at an upper position having a predetermined distance from the outer peripheral surface of the screw at the inlet of the screw type transport mechanism and at a position outside the deposition area of the supplied gel-like material in a normal time. The transport device according to claim 1.