JPH03170151A - Central vacuum piping system for dental purpose - Google Patents

Abstract

PURPOSE:To assure stable suction without allowing water, saliva, dust, etc., to remain in a vacuum main pipe by providing a washing liquid supply tank for passing a washing liquid to the vacuum main pipe. CONSTITUTION:A stop valve 12 of a return pipe 10 is held closed and the inside of the pipe is maintained in a suction state by the operation of a suction blower 3 when solenoid valves 5 of branch pipes 4 at >=1 points are opened and the system is under use. The stop valve 12 is opened for a prescribed period of time and the blower 3 is run when all the solenoid valves 5 are put into the sealed state. The water, saliva, dust, etc., sucked from a suction adapter 7 are transported toward a liquid-gas separator 2 by the air sucked from the stop valve 12 even after the solenoid valves 5 are closed. Since the water in the vacuum main pipe 1 is removed, the inside of the main pipe 1 is always in the dry state. A prescribed volume of the washing liquid is supplied from the washing liquid supply tank 11 through the return pipe 10 to the vacuum main pipe 1 during the time when the diagnosing time ends. This washing liquid peels or dissolves the residues remaining in the main pipe 1 from the pipe wall and the residues dispersed in the washing liquid are transported to the separator 2 and are removed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Eleventh aspect of the invention] (Industrial application field) This invention relates to a dental central vacuum piping system in which stable suction is always performed.

(Conventional technology) In dental medical facilities, cutting dust and
Water injection, suction removal of saliva, etc. from the oral cavity, and suction removal of cutting dust during dental techniques are performed.

Conventionally, in order to carry out this suction removal, a central vacuum piping system, for example as shown in FIG. 1, has been provided. This central vacuum piping system includes a large-diameter vacuum main pipe 1 whose one end is sealed, and a gas-liquid separator 2 and an intake blower 3 connected to the other end of the vacuum main pipe 1. Further, a plurality of branch pipes 4 . . . which are led to each examination table etc. are connected.

A solenoid valve 5 and a filter 6 are provided at the end of the branch pipe 4, and the open end of the branch pipe 4 is inserted into the patient's oral cavity to remove water, saliva, and dust from the oral cavity. A suction adapter 7 that sucks the air together with the air is connected via a suction hose 8. Water, saliva, dust, etc. sucked from the suction adapter 7 are filtered into a large size (approximately 1 m) by the filter 6 at the tip of the branch pipe 4.
After removing the foreign matter (Il or higher), the vacuum pipe passes through the vacuum main pipe 1 together with air and is conveyed to the gas-liquid separator 2. The gas-liquid separator 2 separates these into gas components such as air and liquid components such as water and saliva containing dust and the like.

The gas component separated here is sucked and exhausted by the intake blower 3, and when a certain amount of the liquid component accumulates, it is discharged through the drain pipe 9.

(Problem to be Solved by the Invention) By the way, in order to completely convey the suction material from the suction adapter 7 by air, the air velocity in the main vacuum pipe 1 is normally set to 2.
The diameter of the vacuum main pipe 1 is set so that the above-mentioned wind speed can be obtained when all the branch pipes 4, that is, the suction adapters 7 are opened. Therefore, when the number of openings of the suction adapter 7 is small (the number of openings used is small), the wind speed inside the vacuum main pipe 1 becomes slow, and the water and
Some of the liquid substances and fixed substances such as saliva and dust settle and adhere to the pipe wall of the vacuum main pipe 1 before being conveyed to the gas-liquid separator. The water attached to the pipe wall in this way, 11@liquid,
It has been difficult to suction and remove sludge-like residues made of dust and the like because of their large friction with the pipe walls.

Therefore, sludge-like residue remains inside the vacuum main pipe 1 for a long period of time, and if the residue is left unattended, it will gradually accumulate, resulting in a narrowing of the effective pipe diameter. For this reason, the conventional central vacuum piping system will be used temporarily. There was a problem in that the suction force decreased and a stable suction force could not be obtained. In addition, these sludge-like residues naturally contain various fungi, and while remaining in the vacuum main pipe 1, they rot and produce a bad odor, which is undesirable from a hygienic standpoint. Furthermore, in the past, when such lack of suction power or bad odor occurred,
The inside of the vacuum main pipe 1 was being cleaned, but this had the inconvenience of requiring a contractor to do so.

This invention was made in view of the above circumstances.
The first objective is to provide a dental vacuum piping system in which water, hair, dust, etc. do not remain in the vacuum main pipe 1, and therefore stable suction is performed and the dental vacuum piping system is hygienic.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned objective, the present invention provides an air-liquid component M g= and an intake air to one end of a vacuum main pipe to which a diaphragm pipe is connected. This dental central vacuum piping system is connected to a blower and is provided with a cleaning liquid supply tank for flowing cleaning liquid into the vacuum main pipe.

(Function) In the above configuration, by flowing the cleaning liquid from the cleaning liquid supply tank into the vacuum main body, the cleaning liquid flows toward the gas-liquid separator due to the suction action of the intake blower, so that the inside of the vacuum wood pipe is cleaned by the cleaning liquid. And the stagnation will be removed.

Therefore, the inside of the vacuum main pipe can always be cleaned free of accumulated substances, and stable suction can be performed.

(Example) Hereinafter, this example will be described in detail using the drawings from FIG. 2 onwards.

In FIG. 2, the same parts as the conventional central vacuum piping system shown in FIG. lt, the same reference numerals will be used and the explanation will be omitted.

What is shown in FIG. 2 is a dental central vacuum piping system according to this embodiment. In this central vacuum piping system, a return pipe 10 is connected to the end of the conventionally sealed vacuum main pipe 1. The end of the return pipe 1o is equipped with a cleaning branch for cleaning the inside of the vacuum main pipe 1, and a cleaning supply tank 11 that can flow a predetermined amount into the vacuum main pipe 1 in a short period of time. or connected. Furthermore, at the terminal of the return pipe 10, a large amount of air is supplied to the vacuum main pipe 1.
An on-off valve 12 is provided which allows the flow to flow through the air. The operations of the on-off valve 12, cleaning liquid supply tank 11, and intake blower 3 can be performed centrally at one location by means of an operation panel 13.

It is desirable that the return pipe 10 has a relatively large diameter so that the air from the melon can flow into the main vacuum pipe 1 without resistance. In addition, a vacuum tube 1 is attached to the return pipe 1o.
In order to prevent the residue from flowing in, this return pipe 1o is
It is preferable to set it at a higher position than the position where the vacuum main pipe 1 is installed. In this embodiment, the return pipe 10 is once raised, further bent, and guided toward the end of the vacuum main pipe 1 to which the gas-liquid separation mortar 2 is connected. Here, return pipe 1 is installed at the installation location of gas-liquid separator 2.
0 is derived because it is convenient to maintain these devices if the on-off valve 12, cleaning liquid {1 (supply tank 11, air ifl separator 12, and intake blower 3) are installed in the same location.

The on-off valve 12 allows a large amount of air to flow into the vacuum main pipe l when opened and closed, and is sealed to keep the inside of the pipe airtight when closed. It must be possible.

The reason why the on-off valve 12 and the return pipe 10 must be able to pass a large amount of air is as follows. The air flow inside the vacuum tube 1 is
If the flow is complicated and irregular in both time and space, the air flow velocity will be high even at a position close to the pipe wall, so the residue in the vacuum main pipe 1, especially moisture, can be removed efficiently. It will be done.

This is because in order to make the flow inside the tube turbulent, it is necessary to flow the air at high speed, and for this purpose, a large amount of air must be supplied to the vacuum main pipe 1.

Figure 3 shows this sensor 1/lar vacuum piping system 1.
1 shows an example of an on-off valve 12 suitable for use in.

In this on-off valve 12, a valve body 15 integrally provided with a diaphragm 4 opens and closes with respect to a valve seat portion 17 of a valve seat tube 6 which is connected to a return pipe 10 and also serves as a valve seat. . The operation of this valve body] 5 is performed by a solenoid valve 18. This electromagnetic valve 18 is provided in the middle of a suction pipe 21 that connects one diaphragm chamber provided on the back side of the diaphragm 14 and an opening hole 20 formed on the side surface of the valve seat pipe 16. The operation of this on-off valve 12 is performed as follows. First, in order to open the on-off valve 12, the solenoid valve 18 is opened. When the solenoid valve 18 is opened, the air in the diaphragm chamber 19 is sucked by the intake blower 3 connected to the vacuum main pipe 1, and the pressure becomes lower than atmospheric pressure. On the other hand, since atmospheric pressure is applied to the side of the diaphragm 14 opposite to the diaphragm chamber 19 as shown by the arrow in FIG. 3, the diaphragm 14 is pushed in the direction of the arrow and the valve body 15 and the valve seat portion 17, air flows into the vacuum main pipe 1 via the return pipe 10. Next, if the solenoid valve 18 is closed and the connection between the diaphragm chamber 19 and the opening hole 20 of the valve seat pipe 16 is interrupted, one diaphragm chamber can be accessed from the small hole 22 made in the upper part of this chamber 19. Air flows in little by little, and the pressure inside the diaphragm chamber 19 eventually becomes atmospheric pressure, and the suction force of the intake blower 3 draws the diaphragm 14 toward the valve seat pipe 16, causing the valve body 15 and valve seat 17 to come into close contact. hand,
This on-off valve 12 is in a closed state where air does not flow through it.

Next, the cleaning liquid supply tank 11 provided near the on-off valve 12 supplies a predetermined amount of cleaning liquid to the return pipe 10 at a predetermined time.
It is supplied to the vacuum main pipe 1 via. Although it is desirable to supply the cleaning liquid as frequently as possible, it is inconvenient to frequently fill the tank with cleaning liquid, so a large amount of cleaning liquid can be stored and supplied in predetermined amounts to the vacuum main pipe 1. This is desirable.

FIG. 4 shows a suitable example of this cleaning liquid supply till, the inside of which is a storage tank 23 for storing the cleaning liquid. This storage tank 23 is divided into an upper part by a partition 24, with the upper part serving as a main storage tank 25 for storing multiple quarters of cleaning solution, and the lower part serving as a temporary storage tank 26 for storing one batch of cleaning solution. ing. A communication hole 27 is opened in the special cutout 24, which allows the main storage Wi 25 and the temporary storage tank 2 to be connected to each other.
6 are connected. Temporary storage tank 26 and return pipe 1
0 is communicated with by outflow bone 28. In addition, this temporary storage tank 26 has two vent pipes connected to the main storage h'ff2.
Temporary storage cypress 2 is provided so as to open at the upper surface of 5.
This makes it easy for the cleaning liquid to flow into and out of 6.

The center of the opening 30 of the outflow pipe 28 on the temporary holding tank 26 side is vertically below the center of the communication hole 27 formed in the partition 24. A plug 31 is arranged between the communication hole 27 and the opening of the outflow pipe 28. This stopper 31 has a barrel shape whose upper and lower ends are reduced in diameter so as to fit into the opening surface 3o of the flow hole 27 and the outflow pipe 28, respectively, and its height is equal to the height of the temporary storage tank 26. It is slightly lower than that.

This plug 31 is fixedly connected to a rod 32 with its central axis aligned. The central axis of this rod 32 is
It is provided so as to overlap the line connecting the center of the opening 30 of the flow hole 27 and the outflow pipe 28, and the upper main storage tank 2
5 and is connected to a solenoid 34 installed on the upper surface of the upper plate 33 of the main storage tank 25. The upper part of the rod 32 is housed in an airtight chamber 35. A ring 36 is fitted and fixed to the upper part of the rod 32 of the airtight chamber 35, and a spring 3 is inserted between the ring 36 and the upper surface of the airtight chamber 35.
7 has been inserted. The spring 37 and the solenoid 34 move the plug 31 up and down. The state shown in FIG. 4 shows the state in which the stopper 31 is located at the bottom, and at this time, the flow hole 27 is opened and the outflow pipe 28 is opened.
o is closed. For this reason, I am saving this book! 25 cleaning solution is
Although it flows into the temporary storage tank 26 through the flow hole 27, the water from the one side storage camellia 26 does not flow into the return pipe 10 because the opening surface 30 is closed. return pipe 10
When supplying cleaning liquid to the vacuum main pipe 1 via
The plug 31 is pulled upward by the solenoid 34, the flow hole 27 is closed, and the opening 30 for the outflow RF 28 is opened. In this state, the cleaning liquid in the temporary storage cypress 26 flows out to the return pipe 10 through the outflow pipe 28, but the cleaning liquid in the main storage tank 25 cannot flow out into the samurai storage tank 24. In this way, this cleaning liquid supply tank 11. The cleaning liquid corresponding to the volume of the temporary storage tank 26 can be supplied to the return pipe 10 multiple times.

Next, the operation of the dental central vacuum piping system configured as described above will be explained.

In this dental central vacuum piping system, when the solenoid valves 5 of one or more branch pipes 4 are opened and in use, the on-off valve 12 of the return pipe 10 is opened. The tube is in a closed state, and the inside of the pipe is brought into an intake state by operating the intake blower 3. All branch pipes 4...
When the electromagnetic valves 5, . This operation is performed in response to electrical signals sent from each electromagnetic valve 5 to the operation panel. During this time, the intake blower 3 is kept in operation. Water, liquid, dust, etc. sucked from the suction adapter 7 by the air suctioned from the on-off valve 12 continue to flow into the gas-liquid separator 2 even after the solenoid valve 5 of the branch pipe 4 is closed.
It will be transported to. Also, due to this air,
Since the moisture in the vacuum main pipe 1 is removed, the interior of the woodwind 1 is always kept dry.

At the end of the examination time, a predetermined amount of cleaning fluid is supplied from the cleaning fluid supply tank 11 to the vacuum main pipe 1 via the return pipe 10.
is supplied to This cleaning liquid is for peeling off or dissolving the residue left inside the vacuum main pipe 1 from the pipe wall.
The residue dispersed in the cleaning liquid is conveyed to the gas-liquid separator 2 together with the cleaning liquid and removed.

In this way, the central vacuum distribution system of this embodiment supplies the cleaning liquid from the cleaning liquid supply tank 11 to the on-off valve 12.
Air can be supplied to the vacuum main 1.

Therefore, since the residue is transported by the air supplied from the on-off valve 12, the interior of the vacuum main pipe 1 can be kept in a dry state, and the amount of residue in the main pipe 1 is reduced. In addition, since the cleaning liquid is supplied from the cleaning liquid supply tank 11, the residue attached to the wall of the main pipe 1, which is difficult to be transported by air, is peeled off by the cleaning liquid and transported to the air separator 2 together with the cleaning liquid. The Rukoto. Therefore, vacuum wooden pipe 1
Since the inside is always kept clean, the dental central vacuum piping system of this embodiment can always obtain a stable suction force, and does not generate any bad odor, making it sanitary.

In this embodiment, in a dental clinic equipped with the conventional central vacuum piping system shown in FIG.
A cleaning supply tank 11 was added to create the central vacuum piping system shown in FIG. There are four suction steps at the terminal, the diameter of the vacuum main pipe 1 is φ40+nm, the diameter of the return pipe 1o is φ25mm, and its length is 10 m1. The interval between the vacuum main pipe 1 and the return pipe 10 is 25 CII+.
Met. A diaphragm valve shown in FIG. 3 was used as the on-off valve 12, and a diaphragm valve shown in FIG. 4 was used as the cleaning liquid supply tank 11. The on-off valve 12 was opened for 60 seconds when the solenoid valves 5 of all the branch pipes 4 were closed during medical treatment hours, and the ventilation amount at that time was 1500 fan/min. In addition, the cleaning liquid supply tank 11 has a temporary storage tank 26 with a capacity of 1 length,
Water was used as the cleaning liquid and was supplied to the vacuum main pipe 1 at a rate of 0.61/min. The cleaning liquid was supplied after the examination in the evening, and after the cleaning liquid had passed, the on-off valve 12 was opened for 2 minutes to allow air to flow.

A comparison was made using the central vacuum piping system set up as described above in the same manner as before.

With the conventional vacuum piping system, after three months of use, the suction power decreased significantly and a bad odor was generated, so we had to ask a contractor to clean the vacuum main pipe 1.
Even after using the vacuum piping system of this example for half a year, the suction power did not decrease and no bad odor was generated.

In the above embodiment, the on-off valve 12 and the cleaning liquid supply tank 11 are provided in the vacuum main pipe 1 via the return gap 10, but these may be provided directly at the end of the vacuum main pipe 1. In addition, the on-off valve 12 and the cleaning liquid supply tank 11 are
Not limited to those shown in FIGS. 3 and 4, other systems may be used as long as they have similar effects. For example, a large electromagnetic valve may be used directly as the on-off valve 12. . Further, the cleaning liquid supply tank 11 may have a structure in which the flow hole 27 and the outflow pipe 28 shown in FIG. There is a flush valve that opens and closes the valve using water pressure, and a cock that opens the valve and the water in the tank flows out. A tank-type cleaning liquid supply tank 11 called a low tank or noi tank may also be used. Furthermore, it is desirable to set the timing of opening the on-off valve 12 to supply air, the timing of supplying the cleaning liquid from the cleaning liquid supply tank 11, the amount, time, etc. of these, according to the system usage situation of each medical facility. .

[Effects of the Invention] As can be understood from the above description of the embodiments, the present invention provides a system in which a gas-liquid separator 2 and an intake blower 3 are connected to one end of the vacuum main pipe (2) to which the branch pipe 4 is connected. This is a dental central vacuum piping system in which a main vacuum pipe 1 is provided with a cleaning liquid supply tank 11 for supplying cleaning liquid.

Therefore, according to the present invention, the inside of the vacuum main pipe 1 can be cleaned without any accumulated substances by flowing the washing liquid from the washing liquid supply tank 11 into the vacuum main pipe 1. Therefore, the vacuum main pipe 1 is not clogged, and stable suction can be performed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Fig. 1 is a schematic diagram of a conventional dental central vacuum piping system, and Fig. 2 is a schematic diagram showing an embodiment of the dental central vacuum piping system of the present invention. FIG. 3 is a cross-sectional view showing an embodiment of an on-off valve suitable for use in the piping system of the present invention, and FIG. 4 is a cross-sectional view showing an embodiment of the cleaning liquid supply tank. 1 1... Vacuum main pipe 2... Gas-liquid separator 3... Intake blower 4... Branch pipe 1]... Cleaning liquid {Soldier supply tank 2... Open/close valve

Claims (1)

[Claims] In a dental central vacuum piping system in which a gas-liquid separator 2 and an intake blower 3 are connected to one end of a main vacuum pipe 1 to which a branch pipe 4 is connected, cleaning liquid is supplied to flow the cleaning liquid into the main vacuum pipe 1. A dental central vacuum piping system characterized in that a tank 11 is provided.