JP6832011B2 - Waste liquid equipment - Google Patents

Description

According to the present invention, in a waste liquid pit installed in a food factory, a chemical factory, a chemical factory, or a factory where oil-based and water-based waste liquids are mixed and discharged, the stored waste liquids are classified into oil-based waste liquids, water-based waste liquids, and the like. Regarding the device for discharging to.

Conventionally, an oil-based solution is obtained by detecting the interface between these solutions from the outside with a device such as a sensor to temporarily store a mixed solution of oil-based and aqueous solutions discharged during the production of foods, chemicals, chemicals, etc. , There are various devices that can be separated into aqueous solutions and the like.

For example, in Patent Document 1, a CCD camera is arranged so as to face a slit portion made of a transparent material formed on a side surface of a container containing a solution forming an interface, and light from a light illuminating the solution is converted into a CCD. A device capable of taking a picture with a camera, processing the video signal with an image processing device, displaying it on an image output device, and measuring the interface inside the container is disclosed.

Japanese Unexamined Patent Publication No. 9-145453

However, even if the device for measuring the interface of Patent Document 1 can detect the interface from the outside of the solution storing the solution forming the interface, it is oily and water-based in food factories, chemical factories, pharmaceutical industries, etc. Since the waste liquid pit installed in a factory or the like where the waste liquid is mixed and discharged is provided by excavating the ground, it is difficult to detect the interface from the outside of the waste liquid pit.

Further, even if the CCD camera used for the device for measuring the interface of Patent Document 1 and detecting the interface is installed inside the waste liquid pit, the waste liquid stored in the waste liquid pit is not only oil-based waste liquid and aqueous waste liquid but also oil-based. It consists of various components such as floating substances such as bubbles floating on the waste liquid, intermediate waste liquid that is emulsified between oil-based waste liquid and aqueous waste liquid and drifts like a cloud, and sediment that has a heavier specific gravity than the aqueous waste liquid that deposits at the bottom of the waste liquid pit. Therefore, various components adhere to the device for detecting the interface, and the interface cannot be detected accurately, and the device for detecting the interface is deteriorated and needs to be replaced frequently.

Therefore, the present invention can be applied to a waste liquid pit installed in a factory where oil-based and water-based waste liquids are mixed and discharged, such as a food factory, a chemical factory, and a pharmaceutical industry, and only oil-based waste liquid and water-based waste liquid can be applied. Instead, there are various types of waste such as bubbles floating on the oily waste liquid, intermediate waste liquid that is emulsified between the oily waste liquid and the aqueous waste liquid and floats like a cloud, and a sediment that has a heavier specific gravity than the aqueous waste liquid that deposits at the bottom of the waste liquid pit. It is an object of the present invention to provide a waste liquid apparatus having excellent durability, which can accurately detect the interface between waste liquids composed of the above components and separate the liquids.

[1] That is, the waste liquid device of the present invention has an upper opening, a waste liquid tank for storing a multi-layered waste liquid, and a transparent cylinder erected from the bottom to the opening in the waste liquid tank. A unit, a detection unit provided inside the cylinder portion to detect the interface of the waste liquid, a control unit that controls an external device based on information from the detection unit , and a suction port are immersed in the waste liquid. switching and drain pipe, a driving source connected to said drain pipe pumping the waste liquid, the discharge path of the waste on the basis of the connected to the drain pipe before Symbol controller to the information type is changed in the waste It is a waste liquid device characterized by being provided with a switching valve.

[ 2 ] The waste liquid apparatus according to the above [1] , wherein the detection unit includes a photoelectric conversion element for inputting the interface of the waste liquid as a colored image.

[ 3 ] Then, the control unit controls to move the position of the suction port up and down to substantially the same height as the detection unit based on the position information of the detection unit that moves up and down inside the cylinder portion. The waste liquid device according to the above [1] or the above [2].

[ 4 ] Further, the position of the suction port is fixed at substantially the same height as the detection unit fixed inside the tubular portion, from the above [1] to the above [3]. It is a waste liquid device described in any of.

As described above, according to the present invention, the present invention can be applied to a waste liquid pit installed in a waste liquid pit installed in a food factory, a chemical factory, a chemical industry, or the like where a mixture of oil-based and water-based waste liquids is discharged, and can be applied to oil-based waste liquids and water-based waste liquids. Not only waste liquid, but also floating substances such as bubbles floating on oil-based waste liquid, intermediate waste liquid that is emulsified between oil-based waste liquid and aqueous waste liquid and drifts like a cloud, and sediment that has a heavier specific gravity than aqueous waste liquid that deposits at the bottom of the waste liquid pit. Even if it is a waste liquid composed of various components such as, it is possible to accurately detect the interface between them and separate the liquid, and it is possible to make the waste liquid excellent in durability.

It is a side sectional schematic diagram which shows the 1st Embodiment of this invention. It is a side sectional schematic diagram which shows the 2nd Embodiment of this invention. It is a side sectional schematic diagram which shows the 2nd Embodiment of this invention.

Hereinafter, embodiments relating to the waste liquid apparatus according to the present invention will be described in detail. Since the embodiments described below are specific examples preferable for carrying out the present invention, various technical restrictions are made, but the present invention is intended to particularly limit the invention in the following description. Unless otherwise stated, it is not limited to these forms.

[First Embodiment]
As shown in FIG. 1, the waste liquid apparatus according to the first embodiment of the present invention has the following configuration. That is, a waste liquid tank 1 for storing a waste liquid composed of multiple layers, a transparent cylinder portion 2 standing in the waste liquid tank 1, a detection unit 3 provided inside the cylinder portion 2 for detecting the interface of the waste liquid, and a detection unit. It is composed of a control unit 4 and the like that output the presence / absence of an interface to the outside based on the information from 3.

The waste liquid is composed of a plurality of layers such as an oil-based waste liquid OW, an aqueous waste liquid WW, and an emulsion waste liquid NW in which the oil-based waste liquid and the aqueous waste liquid are emulsified to form an intermediate layer between the oil-based waste liquid layer and the aqueous waste liquid layer. Further, depending on the type of waste liquid, a precipitate such as an inorganic substance may be deposited below the aqueous waste liquid WW, or an indefinite residue such as bubbles may be suspended above the oil-based waste liquid OW.

The waste liquid tank 1 is a member for storing the waste liquid having a multi-layer structure as described above, and examples thereof include a waste liquid pit which is a depression formed by excavating the ground with a predetermined width and depth. In the present embodiment, the waste liquid tank 1 is the waste liquid pit, which is a hole obtained by excavating the ground in a rectangular shape, has an opening 11 above the hole, and the waste liquid discharged from each department is a pipeline or the like. The liquid is sent via the above, and when a predetermined amount of waste liquid is accumulated, it is discharged to the outside.

The tubular portion 2 is a member that is erected from the bottom portion 12 to the opening portion 11 in the waste liquid tank 1 and at least a part that comes into contact with the waste liquid is transparent. The tubular portion 2 has a tubular shape of a bottomed cylindrical system or a bottomed square tubular system, and is made of an inorganic material such as glass or a transparent organic material such as polycarbonate or polymethyl methacrylate resin in a transparent portion. It is formed and has transparency so that the waste liquid can be visually recognized from the inside of the tubular portion 2. Since the tubular portion 2 is erected from the bottom 12 of the waste liquid tank 1 to the opening 11, the oil-based waste liquid OW and the emulsion waste liquid NW are erected from the inside of the tubular portion 2 through the transparent portion thereof. The interface, the interface between the emulsion waste liquid NW and the aqueous waste liquid WW, can be visually recognized. In the present embodiment, the tubular portion 2 is a transparent member as a whole, but in other embodiments, at least only a part that comes into contact with the waste liquid is transparent in a circular shape or a long and narrow shape in the vertical direction. It can also be an entirely tubular member with windows.

The upper end of the cylinder portion 2 is located above the waste liquid tank 1 so as to be always higher than the liquid level of the waste liquid so that the waste liquid does not flow into the cylinder portion 2. Further, the diameter of the tubular portion 2 is smaller than the size of the opening 11 of the waste liquid tank 1, and is provided with a sufficient size for accommodating the detection unit 3 described later.

The detection unit 3 is provided inside the cylinder portion 2 and is a member that detects the interface of the waste liquid such as the interface between the oil-based waste liquid OW and the emulsion waste liquid NW and the interface between the emulsion waste liquid NW and the aqueous waste liquid WW from the inside of the cylinder portion 2. .. More specifically, the detection unit 3 is a member having a photoelectric conversion element that inputs the interface of the waste liquid as a colored image. In general, waste liquids such as oil-based waste liquid OW, water-based waste liquid WW, and emulsion waste liquid NW have different colors, so that the detection unit 3 provided with a light receiving element such as a color CCD has an interface between them at a predetermined angle of view. When the image is captured, each color can be detected as an image and converted into an electric signal. Further, even if it is difficult to distinguish waste liquids such as oil-based waste liquid OW, aqueous waste liquid WW, and emulsion waste liquid NW in the same color system, a boundary line is generated at the interface of each waste liquid, so that boundary line is used as an image. It can be detected and converted into an electrical signal.

Then, in general, when the oil-based waste liquid OW, the aqueous waste liquid WW, and the emulsion waste liquid NW emulsified between the oil-based waste liquid OW and the aqueous waste liquid WW and drifting like a cloud come into direct contact with the detection unit 3, the detection unit 3 In order to deteriorate the housing and the like, it is necessary to shorten the life and replace it at a predetermined frequency, and it is difficult for the detection unit 3 to accurately detect various interfaces due to adhesion to the detection unit 3. By being provided inside the tubular portion 2, the detection unit 3 does not come into direct contact with the waste liquid, so that the interface of the waste liquid can be accurately detected, and deterioration due to the waste liquid is suppressed to shorten the life of the detection unit 3. It has the effect of never happening.

Further, the detection unit 3 is configured so that the detection unit moving means 8 can move the inside of the cylinder portion 2 in the vertical direction. The detection unit moving means 8 is generally included inside the cylinder portion 2 together with the detection unit 3, and includes a rotary shaft 81 that comes into contact with a member that supports the detection unit 3 and a rotary shaft 81 that is located at the upper end of the rotary shaft 81. It has a rotation drive source 82 or the like to rotate, and the rotation shaft 81 is provided with spiral unevenness, and the member supporting the detection unit 3 is in contact with the unevenness, so that the rotation shaft 81 is unidirectional. When rotated, the detection unit 3 moves upward, and when rotated in the opposite direction, the detection unit 3 moves downward. Since the rotary drive source 82 also incorporates a rotary encoder, it calculates how far the detection unit 3 has moved up and down by counting the rotation speeds of the forward rotation and the reverse rotation of the rotation shaft 81. be able to. Further, an upper limit limiter 83 is attached to the upper end side of the rotation shaft 81, and a lower limit limiter 84 is attached to the lower end side, so that the rotation drive source 82 stops when the detection unit 3 comes into contact with the upper limit limiter 83 or the lower limit limiter 84. The detection unit 3 moves up and down between the upper limit limiter 83 and the lower limit limiter 84.

The control unit 4 is a member that controls an external device based on information from the detection unit 3. More specifically, the control unit 4 is connected to the detection unit 3 by wire or wirelessly, receives an electric signal output by the detection unit 3, and determines the presence or absence of an interface in various directions based on the electric signal. Controls output to the outside. The external device is, for example, an image output device such as a monitor or a display, which can control the output of an image taken by the detection unit 3 to them, and can be used by a rotating light, an indicator light, or the like to give the user an image. It is possible to control the output by turning on the light output device to notify when the interface is detected, and further, it lights up when the interface is detected on the voice output device by voice such as a buzzer or alarm. By doing so, it is possible to control the output, and if necessary, these external devices can be used in combination. In this embodiment, the control unit 4 is separate from the detection unit 3, but in other embodiments, the control unit 4 may be incorporated inside the detection unit 3.

The drainage pipe 5 is a tubular member provided with a suction port 51 that is immersed in the waste liquid at one end, and waste liquids such as oil-based waste liquid OW, aqueous waste liquid WW, and emulsion waste liquid NW are pumped up by a drive source 6 described later. This is a conduction path for discharging from the waste liquid tank 1. The operator confirms the type of waste liquid detected by the detection unit 3 through the control unit 4, manually immerses the suction port 51 to the depth of the detection unit 3, operates the drive source 6, and starts suction. The suction of the specific waste liquid is continued until the detection unit 3 detects the interface. Then, when the detection unit 3 is near the interface with a different type of waste liquid, the detection unit 3 sucks the specific type of waste liquid as close to the interface as possible while making adjustments such as slowing the suction speed, and when the detection unit 3 detects the interface. , Once the drainage pipe 5 is taken out of the waste liquid and replaced with another drainage pipe used exclusively for the next type of waste liquid, or the drainage pipe 5 is used as it is and the drainage pipe 5 is connected. Prepare to inhale the next type of wastewater by reconnecting the wastewater container to the container that stores the wastewater of the next layer. Then, similarly, the following types of waste liquid are sucked in and discharged from the waste liquid tank 1. Such work is repeated for each type of waste liquid, and the waste liquid in the waste liquid tank 1 is discharged. Since the detection unit 3 is movable up and down, it is possible to discharge the oil-based waste liquid OW from a specific type of waste liquid, for example, first. Further, the oil-based waste liquid OW and the emulsion waste liquid NW can be discharged as appropriate, and the aqueous waste liquid WW can be accumulated without being discharged a predetermined number of times and discharged when a predetermined amount is accumulated. As described above, since the amount of various waste liquids discharged from the factory is different, various waste liquids can be discharged from the waste liquid tank 1 by a systematic and efficient method.
The drive source 6 is a member connected to the drainage pipe 5 to pump up the waste liquid, and is a device such as a centrifugal pump that guides various waste liquids to the drainage pipe 5 by reducing the pressure inside the drainage pipe 5 by electric power. The drive source 6 can appropriately discharge the waste liquid stored in the waste liquid tank 1 to the outside of the waste liquid tank 1. Further, as the drive source 6, a type having appropriate performance is selected and used in consideration of the diameter, height difference, drainage speed, installation area, etc. of the drainage pipe 5.

As described above, by using the waste liquid apparatus having the above configuration, waste liquids such as oil-based waste liquid OW, water-based waste liquid WW, and emulsion waste liquid NW can be appropriately discharged from the waste liquid tank 1, and the interface of these waste liquids can be accurately discharged. Since the detection unit 3 does not come into direct contact with the waste liquid, it can be detected and separated, so that deterioration can be prevented and the number of maintenance can be reduced as the entire configuration of the device. Can be done.

[Second Embodiment]
As shown in FIG. 2, the waste liquid apparatus according to the second embodiment of the present invention has the following configuration as in the first embodiment. That is, a waste liquid tank 1 for storing a waste liquid composed of multiple layers, a transparent cylinder portion 2 standing in the waste liquid tank 1, a detection unit 3 provided inside the cylinder portion 2 for detecting the interface of the waste liquid, and a detection unit. A control unit 4 that outputs the presence or absence of an interface to the outside based on the information from 3, a drainage pipe 5 provided with a suction port 51 that is immersed in the waste liquid at one end, and a drive that is connected to the drainage pipe 5 to pump up the waste liquid. It is composed of a source 6 and the like.

Further, the waste liquid apparatus according to the second embodiment of the present invention can automatically discharge various waste liquids instead of manually. That is, not only the detection unit 3 but also the discharge pipe 5 can be provided in the waste liquid tank 1 so as to be movable up and down, the suction port 51 can be adjusted to an appropriate height, and only the desired type of waste liquid can be discharged.

The drainage pipe 5 is configured so that the drainage pipe moving means 9 can move the inside of the waste liquid tank 1 in the vertical direction. The drainage pipe moving means 9 is provided above the waste liquid tank 1 together with the drainage pipe 5, and has a rotary shaft 91 that comes into contact with a member that supports the drainage pipe 5 and a rotary shaft that is located at the upper end of the rotary shaft 91. The rotary shaft 91 has a rotary drive source 92 or the like for rotating the 91, and the rotary shaft 91 is provided with spiral unevenness, and the member supporting the drainage pipe 5 is in contact with the unevenness. When rotated in one direction, the drain pipe 5 moves upward, and when rotated in the opposite direction, the drain pipe 5 moves downward. Since the rotary drive source 92 is provided with the rotary encoder 94, how far the drainage pipe 5 has moved up and down by counting the rotation speeds of the forward rotation and the reverse rotation of the rotation shaft 91. Can be calculated. Further, an upper limit limiter 93 is attached to the upper end side of the rotary shaft 91, and when a member supporting the drainage pipe 5 comes into contact with the upper limit limiter 83, the rotation drive source 92 is controlled to stop, so that the drainage pipe 91 is discharged. The liquid pipe 5 is restricted not to move beyond the upper limit limiter 93. Further, since the drainage pipe 5 moves up and down, a flexible connecting pipe 5A is connected between the upper end portion and the drive source 6.

Similar to the first embodiment, the control unit 4 is a member that controls an external device based on information from the detection unit 3. Specifically, the control unit 4 is connected to the detection unit 3 by wire or wirelessly to detect. The electric signal output by the unit 3 is received, the operation of the drive source 6 is controlled based on the electric signal, the direction of the valve of the switching valve 7 is controlled, and the drainage pipe moving means 9 is controlled.

As described above, the control unit 4 in the present embodiment moves the detection unit 3 and the detection unit moving means 8 up and down with the detection device side, and the drive source 6, the switching valve 7, and the drainage pipe 5 as the drainage pipe moving means. It is possible to interlock the discharge device side of 9 and automatically discharge various waste liquids. Specifically, when the detection unit 3 moves up and down in the cylinder 2 by the detection unit moving means 8 to detect the interface of various waste liquids and reaches a specific type of waste liquid, the control unit 4 detects it. The position of the unit 3 is detected by the rotary encoder 85. Then, the control unit 4 drives the rotary drive source 92 via the rotary encoder 94 so that the suction port 51 has substantially the same height as the detection unit 3 based on the position information of the detection unit 3, and the suction port 51 The discharge path is switched by the operation of the switching valve 7 according to the type of waste liquid in which the is located, and the drive source 6 is operated to perform a series of control for pumping up a predetermined waste liquid. When the predetermined amount of waste liquid is reduced and the detection unit 3 detects the interface, the control unit 4 temporarily stops the drive source 6 and moves the detection unit 3 to another type of waste liquid to perform the same control. Then, control is performed to sequentially discharge various waste liquids from the waste liquid tank 1. Therefore, various waste liquids can be automatically discharged from the waste liquid tank 1. Not only can it be controlled automatically, but it can also be operated manually as needed.

[Third Embodiment]
As shown in FIG. 3, the waste liquid apparatus according to the third embodiment of the present invention has the following configurations as in the first embodiment and the second embodiment. That is, a waste liquid tank 1 for storing a waste liquid composed of multiple layers, a transparent cylinder portion 2 standing in the waste liquid tank 1, a detection unit 3 provided inside the cylinder portion 2 for detecting the interface of the waste liquid, and a detection unit. A control unit 4 that outputs the presence or absence of an interface to the outside based on the information from 3, a drainage pipe 5 provided with a suction port 51 that is immersed in the waste liquid at one end, and a drive that is connected to the drainage pipe 5 to pump up the waste liquid. It is composed of a source 6 and the like.

Unlike the first embodiment and the second embodiment, the detection unit 3 is fixed at a predetermined position in the tubular portion 2. The drainage pipe 5 is also fixed so that the position of the suction port 51 is substantially the same as that of the detection unit 3 unlike the second embodiment.

The control unit 4 is a member that controls an external device based on the information from the detection unit 3, as in the first embodiment and the second embodiment. Specifically, the control unit 4 is wired or wireless with the detection unit 3. The electric signal output by the detection unit 3 is received, the operation of the drive source 6 is controlled based on the electric signal, and the direction of the switching valve 7 is controlled.

In this way, the control unit 4 in the present embodiment can interlock the detection device side of the detection unit 3 with the discharge device side of the drive source 6 and the switching valve 7 to automatically discharge various waste liquids. it can. Specifically, when the detection unit 3 detects a specific type of waste liquid, the control unit 4 switches the discharge path according to the type of waste liquid in which the suction port 51 is located by the operation of the switching valve 7. The drive source 6 is operated to perform a series of controls for pumping up a predetermined waste liquid. When the predetermined amount of waste liquid is reduced and the detection unit 3 detects the interface, the control unit 4 temporarily stops the drive source 6, switches the switching valve 7 to discharge the next type of waste liquid, and drives it again. The source 6 is operated to control the discharge of the next waste liquid from the waste liquid tank 1. As shown in FIG. 3, if the suction port 51 is located near the bottom of the waste liquid tank 1, the aqueous waste liquid WW, the emulsion waste liquid NW, and the oil-based waste liquid OW can be discharged in this order. As in the second embodiment, not only the control can be performed automatically, but also the operation can be performed manually as needed.

1 ... Waste liquid tank 11 ... Opening 12 ... Bottom 2 ... Cylinder 3 ... Detection unit 4 ... Control unit 5 ... Drainage pipe 51 ... Suction port 5A ...・ ・ Connection pipe 6 ・ ・ ・ Drive source 7 ・ ・ ・ Switching valve 8 ・ ・ ・ Detector moving means 81 ・ ・ ・ Rotation shaft 82 ・ ・ ・ Rotation drive source 83 ・ ・ ・ Upper limit limiter 84 ・ ・ ・ Lower limit limiter 85 ... Rotary encoder 9 ... Drainage pipe moving means 91 ... Rotating shaft 92 ... Rotating drive source 93 ... Upper limit limiter 94 ... Rotary encoder OW ... Oil-based waste liquid NW ... Emulsion Waste liquid WW ・ ・ ・ Aqueous waste liquid

Claims (4)

A waste liquid tank that has an opening at the top and stores waste liquid consisting of multiple layers,
A transparent cylinder that is erected from the bottom to the opening in the waste liquid tank, and
A detection unit provided inside the cylinder and detecting the interface of the waste liquid,
A control unit that controls an external device based on information from the detection unit ,
A drainage pipe in which the suction port is immersed in the waste liquid, and
A drive source connected to the drainage pipe to pump up the waste liquid,
Effluent apparatus characterized by comprising a switching valve for switching the discharge path of the waste liquid based on the information type of the waste liquid has changed from being connected to the drain pipe and the control unit. The waste liquid apparatus according to claim 1, wherein the detection unit includes a photoelectric conversion element that inputs the interface of the waste liquid as a colored image. And wherein the control unit is based on the position information of the detection unit for vertically moving the inside of the tubular portion, controls vertically moving the position of the suction port to said detecting section and substantially the same height The waste liquid device according to claim 1 or 2. Waste according to any one of claims 1 to 3, characterized in that it is fixed the position of the suction port to said detection portion that is fixed to the inside and substantially the same height of the cylindrical portion apparatus.

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