JPH0247513Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device that detects liquid leakage on a conveyor quickly and easily.

Generally, conveyors are used to move and transport objects in factories and the like, but since conveyors are accompanied by vibrations during operation, the objects often get damaged depending on the nature of the objects being transported. In particular, if a container containing liquid material is damaged, the stored liquid material may spill onto the conveyor, contaminating the conveyor's conveying section and drive section, causing the conveyor to malfunction, or causing other damage. Contaminates containers that are not used, leading to the production of inappropriate products and reduced line operating rates. Therefore, when a container containing a liquid substance is transported by a conveyor, it is necessary to discover damage to the container as early as possible, remove the damaged container, and clean the conveyor.

However, it is difficult to monitor the conveyor all the time, and the conveyor often continues to operate without noticing damaged containers. Therefore, it takes a long time to repair the conveyor, and due to contamination due to liquid leakage, a large number of inappropriate products are produced, which may result in a large amount of damage.

Therefore, the inventor of the present invention aimed to develop a device that can quickly and easily detect liquid leakage on a conveyor due to damage to a container, and as a result of various investigations, the present invention was completed.

That is, the present invention is a liquid leakage detection device comprising an adsorbent sheet placed in contact with a conveyor and a sensor equipped with a limit switch that is activated by an increase in the frictional force between the sheet and the conveyor surface.

Next, the present invention will be explained in detail.

The conveyor 1 referred to in the present invention is an endless belt-shaped mechanical device commonly used in factories, etc., and is not particularly limited. For example, belt type, roller type,
Various types of conveyors can be used, such as chain type, wheel type, screw type, etc.

Next, the adsorbent sheet 2 of the present invention has physical properties that in a dry state, there is almost no adsorption with the sheet surface and the frictional force is minute, but in the presence of liquid, it adsorbs the liquid and increases the frictional force with the conveyor surface. For example, it may be made of ordinary cloth, paper, etc. The size and shape of the sheet are not limited either, and can be appropriately selected depending on the width of the conveyor belt, etc. In short, the absorbent sheet 2 of the present invention
may be any type as long as it increases the frictional force with the conveyor surface due to liquid leakage on the conveyor surface and increases the pulling force in the running direction of the conveyor. The installation location of the adsorbent sheet 2 must be at least partially in contact with the conveyor surface since it needs to be in contact with the leakage liquid on the conveyor surface. In addition, the part of the conveyor 1 that comes into contact with the absorbent sheet 2 is
Preferably, a location where conveyed items will not enter. For example, the lower surface of the conveyor 1 or the interior of the conveyor 1, which is provided with an enclosure or the like to prevent objects from entering the conveyor surface, can be selected as appropriate.

The sensor with a limit switch of the present invention is a sensor equipped with a limit switch 3 that is activated by an increase in the frictional force between the adsorbent sheet 2 and the conveyor surface caused by liquid leakage on the conveyor surface, and detects the occurrence of liquid leakage. A device that tightens

The limit switch 3 turns on or off when a force above a certain level is applied to the absorbent sheet 2.
The mechanism is not limited in any way as long as it is turned OFF. For example, when the absorbent sheet 2 moves in the direction of movement of the conveyor 1, the switch may be activated by turning on or off the contact via the coupler 6 or the like. Next, when the limit switch 3 is turned ON or OFF, the linked sensor is activated. As the sensor, for example, a device having a mechanism such as sounding the alarm buzzer 5, lighting an alarm lamp, or stopping the conveyor 1 can be selected as appropriate. There are no limitations as long as the information can be made public. By installing the liquid leak detection device of the present invention at one or several places on the conveyor surface, liquid leaks on the conveyor can be detected quickly and easily. This makes it possible to minimize the staining of conveyed objects such as paper containers, containers with wrapping paper, or cardboard boxes, which tend to absorb liquid leakage and get dirty, and also to avoid failure of the conveyor.

[Brief explanation of the drawing]

The drawings show embodiments of the liquid leakage detection device according to the present invention; FIG. 1 shows a liquid leakage detection device on a belt-type conveyor surface, and FIG. 2 shows a liquid leakage detection device on a roller-type conveyor surface. 1...Conveyor, 2...Adsorption sheet, 3...
... Limit switch, 4... Sensor (alarm lamp), 5... Sensor (alarm buzzer), 6... Connector.

Claims (1)

[Scope of utility model registration request] An absorbent sheet installed next to the conveyor,
and a liquid leakage detection device consisting of a sensor with a limit switch that is activated by an increase in the frictional force between the sheet and the conveyor surface.