JP2725127B2 - Dental treatment wastewater treatment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wastewater treatment apparatus for treating waste generated by dental treatment.

[0002]

2. Description of the Related Art FIG. 5 is an overall view of the configuration of a main part of a conventional dental unit, wherein 10 is a dental unit, 11 is a treatment chair,
12 is an operating light, 13 is a spitton, and the wastewater from the spitton 13 is a spitton wastewater pipe 18 and a total wastewater pipe 17 on the way.
And is led to a wastewater pit 31 described later. Fifteen
Denotes a vacuum nozzle, 16 denotes a nozzle wastewater pipe connected to the vacuum nozzle 15, and 20 denotes a supply / wastewater pipe box (joint box). The vacuum nozzle 15
As is well known, it is put into the mouth of a patient and sucks and discharges dirt (mainly dirt) generated during dental treatment. In dental treatment, a vacuum source (vacuum), an air pressure source (compressor), a water pressure source, and a pipe are required to suck and exhaust dirt from a vacuum nozzle or the like, which will be described later in detail. Nozzle wastewater pipe 16 in joint box 20
An on-off valve (solenoid valve) 22 is inserted in the
7 is connected. The path of the total wastewater pipe 16 is extended in a positional relationship such that wastewater accumulates and connected to the vacuum tank 21, and waste such as saliva in the oral cavity sucked from the vacuum nozzle 15 and wastewater from the spitoon 13 are discharged into the total wastewater. Tube 17
Through the vacuum tank 21. This vacuum tank 21 is for separating waste liquid and gas sucked through the total wastewater pipe 17, and heavy substances such as liquids are collected at the bottom of the vacuum tank 21, and air is supplied from the siphon suction port 23 to the air compressor 28. Is ejected by the ejector action of the compressed air, and is discharged through the filter 24.

[0003] A relief valve 25 is provided at the bottom of the vacuum tank 21. While the compressed air is supplied as described above, the inside of the vacuum tank 21 is maintained at a negative pressure. Rises upward as shown, and closes the relief valve 25. Therefore, the waste liquid sucked into the tank 21 as described above accumulates in the tank 21,
When the amount increases, the float 26 rises, and finally,
The float 26 reaches the siphon 23 and closes the siphon suction port 23. When the siphon suction port 23 is closed, the inside of the vacuum tank 21 returns to the atmospheric pressure. Therefore, the relief valve 25 is lowered by the weight of the waste liquid in the vacuum tank 21 to open the relief valve, and the waste liquid in the vacuum tank 21 is drained by the drain pipe. It is discharged through 27. Then, the entrance 31 of the wastewater pit 32 of the dental treatment waste is guided through the guide pipe 30.
And is discharged from the outlet 33 to the wastewater channel by the pipe 34. The wastewater pit 32 is cylindrical or square, and heavy matter contained in the waste liquid accumulates at the bottom of the wastewater pit of the dental treatment waste.

[0004]

Contaminants generated during the dental treatment from the vacuum nozzle 15 are sucked through the total waste water pipe 17, while waste water flows from the spitton.
However, the amount of wastewater flowing from the spitton is small and flows in the total wastewater pipe 17 in a deflected state. Therefore, amalgam or the like accumulates in the total wastewater pipe 17, and the amalgam or the like is immersed and dissolved in the wastewater. Separating amalgam from the dissolved wastewater is problematic in terms of equipment costs. In addition, the waste generated during dental treatment is located in the wastewater pit 32.
The heavy liquid such as tooth shavings contained in the waste liquid accumulates at the bottom of the wastewater pit, and the shape of the bottom of the wastewater pit is flat, particularly at the corner. It is difficult to remove things. Leaving the amalgam or the like in a state of being immersed in the wastewater dissolves as described above, making it difficult to separate and remove the amalgam. Therefore, the present invention provides a dental treatment wastewater treatment apparatus that solves such inconveniences.

[0005]

According to a first aspect of the present invention, there is provided a dental treatment wastewater treatment apparatus, wherein a nozzle wastewater pipe from a vacuum nozzle and a spitton wastewater pipe from a spitton are connected on the way to form a single total wastewater pipe. An on-off valve is attached to the nozzle waste water pipe, a storage tank is attached to the spitton waste water pipe, and an on-off valve is installed on the discharge side of the storage tank. Wastewater treatment of dental treatment filth of claim 2
The equipment includes a wastewater pit sidewall from top to bottom.
Equipped with an inclined wastewater pit, a long hole at the bottom
An erecting guide tube is formed, and a stirring blade in contact with the side wall is formed.
The stirrer shaft provided is attached to the guide cylinder so that it can slide on the exterior.
It is a digit.

[0006]

According to the first aspect of the present invention, the wastewater treatment apparatus for dental treatment wastes temporarily stores wastewater from the spitton in a storage tank and discharges the wastewater through a total wastewater pipe when a predetermined amount is reached. Therefore, since a large amount of wastewater flows in the total wastewater pipe at a time, filth from the vacuum nozzle will be discharged by the wastewater,
The amount of waste remaining in the total wastewater pipe can be reduced. As a result, amalgam and the like dissolved in the wastewater can be reduced. The wastewater pit according to claim 2 has a deep bottom.
Part, so that it can be
Heavy matter contained in the sewage that comes in
Collect along the wall at the deep bottom. Also, this wastewater pit
A stirrer having a stirring blade in contact with the side wall is provided.
Therefore, dust placed on the inclined side wall is
Therefore, it will float and settle again and collect in the deep bottom, so wastewater
The sediment in the container can be easily removed.

[0007]

FIG. 1 is an overall configuration diagram for explaining an example of a dental treatment room and wastewater treatment to which the present invention is applied.
10 is a dental unit, and the dental unit 10 is a treatment chair 1
1, an operating light 12. 15 is a vacuum nozzle, 16
Is a nozzle waste water pipe connected to the vacuum nozzle 15,
Reference numeral 20 denotes a supply / drainage pipe box (joint box). As is well known, the vacuum nozzle 15 is inserted into the mouth of a patient, sucks and discharges dirt (mainly, dirt) generated during dental treatment, and drives a vacuum turbine (vacuum) to drive an air turbine, a spray, and the like. ), An air pressure source (compressor), a water pressure source, etc. are required and will be described in detail later. The nozzle waste water pipe 16 is provided with an on-off valve (electromagnetic valve) 22 in a joint box 20. The on-off valve 22 is connected to the vacuum tank 21 via a total waste water pipe 17 provided with waste liquid remaining therein. It is connected to.
Reference numeral 13 denotes a spitton, and wastewater from the spitton 13 is guided to a vacuum tank 21 described later via a spitton wastewater pipe 18 and a total wastewater pipe 17, and a liquid level detector 5 is provided in the joint box 20. A storage tank 4 is provided. Further, an opening / closing valve 6 is provided at the outlet of the storage tank 4 so that the wastewater from the spitton 13 can be stored. When a predetermined liquid level is reached, the opening / closing valve 6 is opened via a controller (not shown). 6 is opened to flow out to the vacuum tank 21 through the total wastewater pipe 17. In this embodiment, the on-off valve 6 is controlled to open and close by a signal from the liquid level detector 5, but the on-off valve 6 is opened at an appropriate time interval by a timer to discharge waste liquid from the storage tank 4. There may be.

[0008] The vacuum tank 21 is for separating the waste liquid and gas sucked through the total waste water pipe 17, and heavy substances such as liquids are collected at the bottom of the tank 21, and air is supplied from the siphon suction port 23 to the air compressor 28. The air is sucked by the compressed air and discharged through the filter 24. On the other hand, the waste liquid collected in the lower part of the tank 21
From the relief valve 25 installed at the bottom to the drain pipe 27
Is discharged through. Then, it is led through the guide pipe 30 to the entrance 51 of the wastewater pit 50 described in detail below, and the entrance 5
The water is discharged from an outlet 53 provided at a position slightly lower than 1 to a wastewater gutter by a pipe 54. Details of the wastewater pit 50
This will be described with reference to FIG. 2 showing a cross-sectional view and FIG. The side wall 56 is formed in an inclined shape from the upper part of the wastewater pit (a position slightly below the outlet 53) toward the deep bottom 55, and in this embodiment, is formed in a symmetrical cone shape. The waste liquid flowing from the inlet 51 flows toward the outlet 53, but heavy contaminants such as tooth cuttings contained in the waste liquid settle and collect in the deep bottom portion 55 via the side wall 56. Therefore, the hose 60 can be easily suctioned and removed by disposing the hose 60 in a negative pressure state in the deep bottom portion 55 and sucking the hose. The side wall 5
It is preferable that the material of No. 6 is formed of a corrosion-resistant stainless steel plate rather than concrete. That is, the stainless plate is
The contaminants do not adhere to the surface, and can be installed in existing wastewater pits such as squares. In addition, the bottom 55
Is formed at the center of the wastewater pit 50, but may be formed at another position.

A guide cylinder 64 is provided on the side wall 5 above the deep bottom portion 55.
6 is fixed upright. At the lower end of the guide cylinder 64, four long holes 62 are drilled around the periphery, so that heavy contaminants contained in the waste liquid from the inlet 51 can drop to the deep bottom 55 along the side wall 56. ing. The stirring shaft 65 of the stirrer 61 is attached to the guide cylinder 64 so as to be slidable on the outside, and a pair of rectangular stirring blades 70 a are provided on the stirring shaft 65 along the inclined side wall 56 via the support piece 71. Further, a pair of propeller type stirring blades 70b are attached to the upper part. The waste liquid flowing from the inlet 51 is the outlet 5
3, heavy contaminants in the waste liquid fall and fall into the side wall 5.
6 and converge at the deep bottom 55. When removing the contaminants collected in the deep bottom portion 55, first, the handle 73 at the top of the stirring shaft 65 is slightly lifted and rotated. The contaminants placed on the side walls 56 are suspended by the stirring blades 70a, while the propeller-type stirring blades 70b are provided with hydraulic power in a downward direction, settle faster, and collect in the deep bottom portion 55.

Next, the contaminants collected in the deep portion 55 at the bottom of the wastewater pit 50 are processed by a filter 80 and a storage box 90 which constitute a contaminant collection device shown in detail in FIG. The hose 60 inserted from the top of the guide cylinder 64 is discharged into a filter medium 82 installed in a cylindrical filter 80. A detachable guide body 81 having four guide rods 81a is attached to the center of the filter 80, and a filter medium 82 of a tubular cartridge type having a bottom and easily replaceable is mounted on the guide rod 81a. . This filter medium 82
In order to prevent the clogging by giving vibration to a pair of vibrators 83, a pair of vibrators 83 which are operated by electromagnets which operate alternately are provided. An opening / closing valve (electromagnetic valve) 85 is provided at a discharge port below the filter 80. The on-off valve 85 is connected to a pipe 5 communicating with a wastewater channel via a second filter 86 and a wastewater pipe 87.
4 is connected. On the other hand, the storage box 90 has a lid 93 that can be opened and closed, and the lid 93 is provided with a vacuum tube 92.
An on-off valve 91 (electromagnetic valve) is provided on the way, and is connected to the siphon suction port 23 in the vacuum tank 21.
An opening / closing valve (electromagnetic valve) 96 is provided on the side 94 of the storage box 90.
a suction pipe 9 connected to the lid 84 of the filter 80 through a
7a is further filtered through an on-off valve (electromagnetic valve) 96b.
A suction pipe 97b is provided extending to the vicinity of the bottom.

Next, the operation of the above configuration will be described. By activating the air compressor 28, the inside of the vacuum tank 21 becomes a negative pressure state by the ejector action via the compressed air. Therefore, by opening the on-off valve 22, the nozzle waste water pipe 20 becomes negative pressure, and dirt such as saliva in the oral cavity passes through the vacuum nozzle 15 through the nozzle waste water pipe 16 and the total waste water pipe 17. And discarded in the vacuum tank 21. On the other hand, the waste liquid from the spitton 13 accumulates in the storage tank 4 when the on-off valve 6 is closed. When the liquid level detector 5 attached to the storage tank 4 reaches a predetermined liquid level (or when the time is up by a timer), the on-off valve 6 is opened by a controller (not shown). The waste liquid inside flows into the total waste water pipe 17 at a stretch and is led out into the vacuum tank 21. For this reason, since the inside of the total wastewater pipe 17 flows in a full state each time the storage tank 4 reaches a predetermined liquid level (elapsed time), it is possible to prevent the accumulation of dirt in the pipe. When the amount of waste liquid accumulated in the vacuum tank 21 increases, the float 26 rises, and finally, the float 26 reaches the siphon 23 and closes the siphon suction port 23. When the siphon suction port 23 is closed, the inside of the tank 21 returns to the atmospheric thickness. Therefore, the self-weight of the waste liquid in the tank 21 lowers the relief valve 25 to open the valve, and the waste liquid in the tank 21 is discharged through the drain pipe 27. , Through the guide pipe 30 to the entrance 51 of the wastewater pit 32.

The sewage flowing from the inlet 51 is supplied to the outlet 5
3, heavy contaminants in the sewage fall and fall into the side wall 5.
6 and converge at the deep bottom 55. When removing the contaminants collected in the deep bottom portion 55, first, the handle 73 at the top of the stirring shaft 65 is slightly lifted and rotated. The contaminants placed on the side walls 56 are suspended by the stirring blades 70a, while the propeller-type stirring blades 70b are provided with hydraulic power in a downward direction, settle faster, and collect in the deep bottom portion 55. Deep bottom 5
5 collected through the hose 60 through the filter 80.
Through the storage box 90. That is, by opening both the on-off valve 91 and the on-off valve 96 a and closing the on-off valve 85, a communication state is established through the vacuum tank 21 and the vacuum pipe 92, and the inside of the storage box 90 and the filter 80 is negative. A pressure state results. Therefore, the contaminants collected at the deep bottom 55 of the wastewater pit 50 via the hose 60 are sucked,
It is discharged into the filter medium 82. Next, the on-off valve 91 and the on-off valve 9
By closing both 6a and opening the on-off valve 85, the wastewater filtered by the filter medium 82 is filtered again by the second filter 86, and then flows out to the wastewater pipe 87 communicating with the wastewater groove. On the other hand, when contaminants accumulate in the filter medium 82, the on-off valve 85 and the on-off valve 96a are closed and the on-off valve 96b is opened, so that the contaminants in the filter medium 82 are removed from the suction pipe 97.
b is discharged to the storage box 90. At this time, by alternately operating the pair of vibrators 83, the filter medium 8
2 vibrates, and the dirt adhering to the surface of the filter medium 82 separates to prevent clogging.

[0013]

The dental treatment wastewater treatment apparatus according to claim 1 of the present invention stores wastewater from spitton in a storage tank,
When a predetermined amount is reached, a large amount of wastewater flows through the wastewater pipe at once through the total wastewater pipe, so the amount of waste remaining in the wastewater pipe can be reduced, and the amount of amalgam etc. dissolved in the wastewater is reduced. Can be done. Also, the dentist according to claim 2
Treatment filth wastewater treatment device rotates along inclined sidewalls
Agitating blades are provided.
Inside the wastewater pit to float and settle again and gather at the bottom
Can be easily removed.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a dental treatment room and a wastewater treatment device.

FIG. 2 is a sectional view of a wastewater pit.

FIG. 3 is a view as viewed from arrows A to A in FIG. 2;

FIG. 4 is a cross-sectional view of a pollutant recovery device.

FIG. 5 is an overall configuration diagram of a conventional dental treatment room and a wastewater treatment device.

[Explanation of symbols]

 Reference Signs List 4 Storage tank 5 Liquid level detector 6 On-off valve 13 Spitton 15 Vacuum nozzle 16 Nozzle wastewater pipe 17 Total wastewater pipe 18 Spitton wastewater pipe 20 Feedwater pipe box 28 Air compressor 50 Wastewater pit 55 Deep bottom 56 Side wall 60 Hose 64 Guide cylinder 65 Stirring shaft 70a, 70b Stirring blade 80 Filter 82 Filter media 85 Open / close valve 86 Second filter 90 Storage box

Claims (2)

(57) [Claims] 1. A nozzle wastewater pipe from a vacuum nozzle and a spitton wastewater pipe from a spitton are connected on the way to
In a wastewater treatment apparatus for dental treatment waste, which is guided to a vacuum tank as a total wastewater pipe, an opening / closing valve is attached to the nozzle wastewater pipe, a storage tank is attached to the spitton wastewater pipe, and an opening / closing valve is provided on the discharge side of the storage tank. A wastewater treatment device for dental treatment filth, comprising: 2. Receiving dental treatment dirt, from top to bottom
Equipped with a wastewater pit with an inclined side wall toward the part
Wastewater treatment apparatus , wherein a guide tube having a long hole is formed upright at a deep bottom portion, and the guide tube is formed on the side wall.
Externally slide a stirring shaft with a stirring blade in contact with the guide cylinder
Dental treatment wastewater characterized by the possibility of installation
Processing equipment.