JPH0123598Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention electromagnetically controls the distance between the reflector and the wetted part to effectively clean the reflector and the wetted part and replace the sample. This invention relates to an in-liquid monitoring monitor that observes the state of microorganisms in wastewater.

[Prior art]

A biological treatment called activated sludge method is widely used to treat wastewater such as sewage and human waste. In this activated sludge method, microorganisms are grown by aerating wastewater, forming activated sludge flocs, and the activated sludge flocs are allowed to settle to obtain a clean supernatant liquid. In such biological treatment of wastewater, observing the state of microorganisms in aeration tanks and the like is an important task.

In order to observe the state of such microorganisms, the present applicant formed a micro-container in front of the liquid contact part of an underwater microscope using a television camera, and by this, it was possible to observe the state of microorganisms in a tank such as a stirring tank. We previously proposed a submerged monitoring monitor that continuously captures images in Utility Model Application No. 197182-1982 (Patent Publication No. 108394-1988).

In such conventional devices, it is necessary to introduce pressure water, compressed air, etc. into the microcontainer in order to replace the liquid in the microcontainer and clean the inside, which makes the device large-scale and creates an economic burden. It has the disadvantage that it becomes large. Furthermore, in order to increase the magnification, the slit width of the microcontainer had to be made extremely small, and the cleaning section of the monitoring section was not so simple.

[Summary of the idea]

This idea was made to eliminate the above-mentioned drawbacks, and was designed to use a reflector that integrates a mirror and a permanent magnet, which are placed opposite to each other in the wetted area, in order to observe the state of microorganisms in wastewater. By adopting a structure in which the distance from the liquid part to the waterproof box is changed by an electromagnetic mechanism consisting of a coil installed near the liquid contact part of the waterproof box and the permanent magnet, stable images can be obtained without the need for a special sampling mechanism. It is an object of the present invention to provide an in-liquid monitoring monitor in which the monitoring part can be efficiently cleaned and the sample liquid can be replaced without using a large-scale device.

[Example of idea]

An embodiment of this invention will be described below with reference to the drawings.

FIG. 1 is a schematic vertical sectional view of an embodiment of a submerged monitoring monitor for observing the state of microorganisms in wastewater according to this invention, and FIG. 2 is a front view thereof. In both figures, 1 is a waterproof box immersed in dirty water, and 2 is a transparent liquid-contact part provided on this waterproof box 1. Further, 3 is a TV camera connected to a TV monitor (not shown), 4 is an illumination light, and these are attached to the waterproof box 1.
It is stored inside. The lens portion 3a of this television camera 3 faces the liquid contact portion 2, and is focused near the liquid side of the liquid contact portion 2.

5 is a reflector, 6 is a mirror, and 7 is a permanent magnet, and the reflector 5 is formed of a synthetic resin integrally molded product in which the mirror 6 and the permanent magnet 7 are embedded.
Reference numeral 8 denotes support rods, each of which has a stopper 8a at its tip, and three support rods are provided around the liquid-contacted portion 2 of the waterproof box 1. The reflector 5 is supported by the support rod 8 so that the distance from the liquid contact part 2 can be varied and the reflector 5 can be easily attached and detached.

Reference numeral 9 denotes a coil, which is configured to be able to pass current in both forward and reverse directions using a DC power source (not shown). This coil 9 constitutes an electromagnetic mechanism together with the permanent magnet 7 embedded in the reflector 5. That is, the permanent magnet 7 is attracted or repelled depending on the direction of the current flowing through the coil 9. Reference numeral 10 denotes a gap adjustment protrusion with which the reflector 5 that has moved toward the liquid contact part 2 due to the action of this electromagnetic mechanism comes into contact to set the distance between the liquid contact part 2 and the mirror 6 to a predetermined value. When monitoring microorganisms, the reflector 5 is brought into contact with the interval adjustment protrusion 10.

Next, how to use the in-liquid monitoring monitor configured as described above will be explained.

First, a waterproof box 1 is shown, which supports a reflector 5 using a support rod 8 and houses a television camera 3 and the like inside.
is immersed in waste water such as an aeration tank, and the light 4 is turned on. As a result, the situation in the waste water from the transparent liquid contact part 2 is displayed on a television monitor (not shown). When a positive current is passed through the coil 9, a repulsive force acts between the coil 9 and the permanent magnet 7, and the reflector 5
is separated from the wetted part 2. At this time, the reflector 5 comes into contact with the stopper 8a of the support rod 8 and stops. When the reflector 5 moves in a direction away from the liquid contact part 2, dirty water flows from the surroundings between the reflector 5 and the liquid contact part 2. The water flow at this time cleans the liquid contact part 2 and the mirror 6, and also replaces the sample liquid.

Next, when a current is applied in the opposite direction to the coil 9, the attractive force acting between the coil 9 and the permanent magnet 7 causes the reflector 5 to move toward the wetted part 2 and come into contact with the spacing adjustment protrusion 10. Stop when touching. At this time, the distance between the reflector 5 and the liquid contact portion 2 is extremely small due to the distance adjustment protrusion 10, so that it is less susceptible to the influence of surrounding sewage water, and observation at high magnification is also possible.

Although the present invention has been described in detail with reference to the illustrated embodiments, the present invention is not limited thereto. For example, a supporting rod installed upright in a waterproof box may be provided in the reflector to support the reflector. The television camera itself may be of the type that is inserted through the through-hole, and the television camera itself may be installed outside the tank and its focus may be set on the liquid surface side of the liquid contact part 2 using an optical fiber or the like. It includes various variations in structure, electromagnetic mechanism, etc.

[Effect of idea]

As described above, according to this invention, the distance between the reflector, which incorporates a mirror and a permanent magnet, and the liquid contacting part can be adjusted simply by changing the direction of the current flowing through the coil of the electromagnetic mechanism, which is made up of a coil and a permanent magnet. Because it has a controlled configuration, it is possible to effectively clean the reflector and liquid-contact parts and replace the sample liquid with extremely simple operations, and it is not affected by the surrounding water flow during observation. High-magnification observation is also possible. In addition, the waterproof box, reflector, etc. have a very simple structure, making them easy to sterilize.Furthermore, since pressure water, compressed air, etc. are not used to move the reflector, there is complete isolation between the outside and the inside of the tank. becomes possible,
It is extremely effective for observation of microorganisms in pure culture, etc.

[Brief explanation of the drawing]

FIG. 1 is a schematic vertical cross-sectional view of an embodiment of a submerged monitoring monitor according to this invention, and FIG. 2 is a front view thereof. 1...Waterproof box, 2...Liquid contact part, 3...TV camera, 5...Reflector, 6...Mirror, 7...
...Permanent magnet, 8...Support rod, 9...Coil, 10
...Space adjustment protrusion.

Claims (1)

[Scope of utility model registration request] A waterproof box immersed in sewage, a television camera that monitors the state of microorganisms in the sewage by focusing on the vicinity of the liquid-contacted part of the waterproof box, and a television camera installed on the liquid side of the liquid-contacted part. a reflector integrally incorporating a mirror and a permanent magnet disposed opposite to each other, a coil provided near the liquid contact part that controls the distance between the reflector and the liquid contact part by repulsion and attraction, and the permanent magnet. A liquid monitoring monitor equipped with an electromagnetic mechanism consisting of a magnet.