JPS60186762A - flow detection device - Google Patents

Abstract

PURPOSE:To detect excellently a flow of conveyed bodies through simple constitution by forming a convex lense for light emission and photodetection on facing surfaces of a transparent pipe integrally with a pipe. CONSTITUTION:A light emitting element 6 and a photodetecting element 7 and convex lenses 2a and 3a for them are formed on facing surfaces of the pipe 1 made of a transparent material wherein conveyed bodies flow integrally with the pipe 1. Therefore, wide emitted light passed through the lens 2a travels in the pipe 1 linearly and even a flow of a small quantity of conveyed bodies or deviating flow is detected excellently through the simple constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION The object of the present invention is to detect objects flowing inside a pipe by forming a lens on the outer wall of the pipe.

Granules, powders, etc. may be transferred to other places through pipes. At this time, if the conveyor becomes clogged somewhere and the object to be conveyed cannot be transferred, the operation must be stopped immediately.

For this purpose, a device that correctly detects whether or not the transported object is being transported properly and issues a signal is required, and an optical sensor is used. However, this invention uses a device that directly configures the pipe wall into a convex lens. This makes it possible to correctly detect even objects that are conveyed in a biased manner or objects that are conveyed in a biased manner.

Next, the flow detection device according to the present invention will be explained based on the drawings. (1) is a pipe, which is made by combining transparent plastic or glass members (2) and (3) with semicircular cross sections. The medium heat part of members (2) and (3) has a circular lens (2a
) (3a). It should be noted that dividing the pipe (1) into parts (2) and (3) and joining them together is just one way of manufacturing, and when forming the lenses (2a) and (3a) into a semicircular shape, It is also possible to cut it into a pipe. Cylindrical holding parts (2b) and (3b) are provided on the outer periphery of the outer surfaces of the lenses (2a) and (aa), respectively, and the seats (4) and (5) are attached to these. , a light emitting element (6) and a light receiving element (7) on each seat.
Camps (8) and (9) are provided.

θI (TI) is a conduit, which is connected to the upper and lower ends of the pipe (1), and is covered with a band a'a Q3.

This flow detection device is constructed as follows.
3a,) and reaches the light receiving element (7).

Here, from conduit 00 through pipe (]) to conduit 0])
When L7 is reached, the transported object guided to a predetermined location will be streaked with the above light in the pipe (1), so when the transported object is passing through the pipe (1), it will not be able to be received. ) The light received by the L element f(7) is weakened, and it is transmitted that the conveyed object is flowing.

Further, when the amount of objects to be transported decreases, the amount of light received by the light receiving element (7) changes accordingly1, and it is possible to make a transmission depending on the state.

In summary, the invention consists of a pair of lenses (2a, 3b) made of transparent material on the opposite surfaces of a tahype (1), and an outer side of the lenses (2a, ) (8a). Since this is a flow detection device characterized in that two light-emitting elements f (6) and a light-receiving element (7) are arranged, the light-emitting element (6)
) Since the object is compressed and reaches the light receiving element (7), the light receiving element (7) can detect it even if the amount of the object to be conveyed is small or even if it is flowing unevenly. -Also, the lens (
2Fl) (8a) is made integrally with the pipe (1), so the manufacturing cost is also low.

In carrying out the present invention, in the embodiment described in -1-, the lens (2a) is bulged inward from the pipe (1).
) (8a) was constructed, but the fact that the lens can be constructed by bulging outward does not require a large number of bars.

[Brief explanation of drawings]

FIG. 1 is a cutaway front view of a flow detection device according to the present invention.
Figure 2 is a four-sided view of the IJJ+prayer side. In addition, the code|symbol in a figure is the following Jm. (1) Pipe (2) Member (2a) Lens (2b) Holding part (3) Part Ig' (3υ,) Lens (3b) Holding part (4) catch seat (5) catch PK (61 light emitting element (7 ) Light receiving element (8) Camp (9) Gap 00 Conduit 01) Conduit special r ``Applicant name Iseki Agricultural Machinery Co., Ltd. Representative Akira Iseki Figure 1

Claims (1)

[Claims] A flow detection device characterized in that a pair of convex lenses are integrally formed on opposing surfaces of a pipe made of a transparent material, and a light emitting element and a light receiving element are arranged outside the lenses.