JPH0641540Y2 - Dental vacuum tank cleaning equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a vacuum tank having a function of cleaning the inner wall surface of the vacuum tank in a dental treatment device.

[0002]

2. Description of the Related Art A vacuum tank for dentistry is decompressed during operation, and cleaning water containing saliva sucked from a vacuum syringe or saliva ejector from the oral cavity during treatment is temporarily passed through a drainage introduction pipe. Collect,
It is a device that separates gas and liquid and stops depressurization when a certain amount of waste water is collected and discharges it from a discharge pipe provided at the bottom. Relatively large dirt in the waste water can be separated by a filter provided in the vacuum tank or a filter provided separately, but fine dirt that cannot be removed by the filter adheres to the inner wall of the vacuum tank in the form of sludge. So it was necessary to clean the vacuum tank regularly.

The Applicant has already provided a technique by which a vacuum tank can be automatically cleaned, which is
The drain pipe from the basin of the spittoon for draining gargle water is connected to the above drainage introduction pipe.By flowing tap water over the basin, the drainage introduction pipe is placed in the vacuum tank under reduced pressure. The tap water and the mixed air from the basin were simultaneously and vigorously sucked from the pipe end of the tank to stir the stored waste water in the tank to provide a cleaning effect (Japanese Patent Publication No. 61-30579).

[0004]

In the conventional cleaning in which tap water from the basin is introduced into the vacuum tank and agitated, it is necessary to remove the water in the drain pipe only by the head difference from the basin to the vacuum tank and the decompression of the suction pump. Since the fluid resistance is large and the discharge speed of tap water is not large, it is not sufficient, and it is necessary to wash off the inner surface of the tank with a brush etc., because the uncleaned portion is left in the vacuum tank.

The present invention has been made to solve the above-mentioned problems, and a vacuum tank in which the inner wall surface is prevented from being contaminated by imparting a stirring force to the stored water to the extent that dirt does not adhere to the vacuum tank in use. Is to provide.

[0006]

A vacuum tank according to the present invention is a dental vacuum tank in which a drainage introduction pipe for introducing oral cleaning drainage generated in dental treatment, an exhaust pipe of a suction pump and a discharge pipe at the bottom are connected. In addition, an air pipe for discharging pressurized air from a pipe end into the vacuum tank is provided in the vacuum tank.

In the vacuum tank of the present invention, the pipe end of the drainage introduction pipe is oriented so that the pipe axis at the pipe end is oblique to the inner peripheral wall surface of the vacuum, and the vicinity of the inner peripheral wall surface. It is particularly preferable that the pipe end of the air pipe is arranged close to the tip of the pipe end of the drainage introduction pipe.

Further, an electromagnetic opening / closing valve for connecting and disconnecting pressurized air from an air source is connected to the air pipe, and the electromagnetic valve is connected to an exhaust pipe between the vacuum tank and the suction pump. The opening / closing operation is preferably performed in conjunction with the opening / closing operation of the electromagnetic opening / closing valve.

[0009]

In the dental vacuum tank of the present invention, since the air pipe for supplying the pressurized air is provided therein, when the drainage from the vacuum syringe or the like is sucked and introduced, the discharge from the drainage introduction pipe is performed. Bubble the waste water to clean the inner wall of the vacuum tank. Especially, if the pipe end of the air pipe is provided so that it can be immersed in the stored waste water of the vacuum tank, the air discharged from the end of the air pipe will not be stored even if the waste water from the vacuum syringe is not sucked in. Since the stored water is agitated and flows while rising as a large number of bubbles in the inside, the floating dirt does not adhere to the peripheral wall of the vacuum tank, and the flowing dirt is removed and cleaned.

Furthermore, when the pipe ends of the air pipe are oriented so as to be oblique to the peripheral wall surface, particularly in a substantially horizontal direction, the discharge air gives a swirl flow to the stored drainage in the vacuum tank, and the peripheral wall surface. Since the peripheral speed of the drainage increases along with this, a further adhesion preventing effect and a cleaning effect are produced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the dental vacuum tank of the present invention will be described below with reference to the drawings.

FIG. 1 shows a sectional view of a vacuum tank according to the present invention. The tank body 1 has a bottomed cylindrical body, and its bottom portion 13 is connected to a flexible discharge pipe 15 via a check valve 14. Has been done.

The support plate 11 is disc-shaped and is watertightly fitted to the inner peripheral surface of the upper opening of the tank body 1 with an O-ring 12 interposed on the outer peripheral end surface thereof, and a locking tool. The support plate 11 and the tank body 1 are fixed by 16. The support plate 11 is fixed, for example, to a suitable member at the bottom of the dental treatment table, in which case the tank body 1 can be separated from the support plate 11 and cleaned.

A drainage introducing pipe 2 for introducing clean oral drainage into the tank body 1 is fixedly penetrated through the support plate 11, and a pipe end 21 thereof is bent in the horizontal direction in this example, and an end face 21 thereof is formed. When the tank main body 1 is mounted on the support plate 11, its pipe axis is inclined with respect to the inner peripheral wall surface so as to be close to the inner peripheral wall surface of the tank main body 1 shown without a cross section in FIG. It has been cut at the intersection.

The drainage introducing pipe 2 is connected to a vacuum syringe 23 and a saliva ejector 24 through a pipe joint member 24 fixed to the support plate 11, as shown in the piping system diagram of FIG. It is connected to the pipe 22.

In FIG. 1, the support plate 11 has an air pipe 3 connected to a pressurized air source 33, an air pipe nozzle 34 at its pipe end 31, and a tip end of the pipe end 21 of the drainage introduction pipe 2. It is fixed so that it is placed toward the side and in close proximity.

The pipe end 21 of the drainage introduction pipe 2 and the nozzle 34 of the air pipe 3 are located above the water surface when the tank is full of water.
Located at the same level.

When using the suction pump 51,
Exhaust pipe 5 connected via the electromagnetic on-off valve 52 shown in FIG.
The inside of the tank body 1 is decompressed by the pipe end 31 of the air pipe 3.
Air is discharged from the air tube nozzle 34.
In this state, if saliva or cleaning liquid is sucked from the inside of the oral cavity being treated with a vacuum syringe or the like, the pipe end 2 of the drainage introducing pipe 2
From 1, the cleaning drainage flows out along the peripheral wall in a substantially horizontal direction together with the entrained air, and the discharged water flow is further bubbled by the air discharged from the air pipe nozzle 34 to clean the tank peripheral wall.

In FIG. 2, the drainage introduction pipe 2 and the air pipe 3 of the vacuum tank shown in FIG.
The cross section of the vacuum tank arranged so that 1 is immersed in the stored water 6 in the said tank is shown. This example
It is intended to forcibly stir the stored water 6 in the tank, and the pipe end 21 of the drainage introduction pipe 2 and the nozzle 34 of the pipe end 31 of the air pipe 3 serve to collect waste water (drainage water) stored in the tank body 1. ) It is necessary to be immersed at least in the stored water 6 which is sewage when it is full of water, but it is arranged at a depth of 1/3 to 2/3 of the full water level from the tank bottom 13. It is preferable to secure the stirring of the stored water 6.

The drainage introduced from the drainage introduction pipe 2 is stored in the tank body 1, but when the liquid level rises and the pipe end 31 of the air pipe 3 is immersed in the liquid, Since a large number of air bubbles are released into the liquid and give a flow to the stored water 6 along the peripheral wall of the tank, the stored water 6 makes a circular motion in the tank body 1. The floating matter of the stored water 6 in a fluidized state does not sink or adhere to the tank peripheral wall. The stirring of the stored water 6
Even when the suction of the drainage from the vaccum syringe 23 is stopped, it can be always performed if the air from the air tube 3 is continuously supplied.

If the liquid level of the stored water 6 rises and the limit switch (not shown) of the float 4 is activated, the electromagnetic valve of the suction pump is closed and the tank body 1 is restored to atmospheric pressure. The stop valve 14 is opened, and the stored water 6 in the tank body 1 is discharged as sewage to the sewage through the discharge pipe 15. Even in this discharging process, the air from the air pipe 3 may be continuously discharged. In addition, the air pipe 3
In addition to the pressurized air source 33, an electromagnetic opening / closing valve 36 that moves with the electromagnetic valve 52 of the suction pump 51 to open / close.
Is provided, and only when the inside of the tank body 1 is in a depressurized state,
Air may be supplied from the air tube 3.

FIG. 4 is a sectional view of a vacuum tank of another embodiment, but in this embodiment, the air pipe 3 is a straight pipe, and a tapered tank bottom 1 whose pipe end 31 is reduced in diameter downward.
3 is arranged so as to reach the vicinity of the air pipe 3, and when the air from the air pipe 3 is blown into the stored water 6, an upward flow is generated in the stored water 6 around the air pipe 3. Therefore, a vertical rotating flow is generated to stir.

In this example, the tube end 31 of the air tube 3 may be bent in the horizontal direction along the peripheral wall of the tank body 1, and in this case, a horizontal rotational flow is also generated.

Further, in this embodiment, the air pipe 3 is fixed by penetrating from the support plate 11 corresponding to the upper lid of the tank main body 1, but is fixed by being inserted into the bottom wall or the side wall of the tank main body 1 inside. You can also use it.

FIG. 5 shows a piping system diagram around the dental treatment table related to the vacuum tank. In the figure, drainage water from the basin 81 of the dental spittoon is also drained.
2 and 87 are branched to flow into the drainage introduction pipe 2 of the vacuum tank of the present invention to increase the amount of water discharged into the tank body 1 and to secure the cleaning power of the inner surface of the tank. In order to directly supply tap water to the basin 81, a water supply pipe 73 from a water supply source 73 via an on-off valve 74 is provided, and a drain pipe 87 from the basin 81 branches off to go through an on-off valve 85. Vacuum syringe 23
Is connected to the flexible pipe 22 for drainage from the water, and the open / close valves 74 and 85 are opened at appropriate fixed intervals to supply tap water to the basin 81.
If it is supplied to the vacuum tank, the waste water stirs the inside of the vacuum tank, and the peripheral wall in the tank body 1 can be effectively cleaned together with the air discharged from the air pipe 3.

[0026]

Since the vacuum tank of the present invention is provided with the air pipe for discharging the pressurized air from the pipe end, the discharge air foams and stirs the sewage flowing out from the drainage introduction pipe, so that the tank peripheral wall To wash. In particular, the air tube
When it is installed so that it can be submerged in the stored water, the stored water above a certain level is constantly blown with air and agitated, so that dirt does not adhere to the tank peripheral wall. Therefore, frequent vacuum tanks are used. The washing can be omitted.

In particular, if the tip of the air pipe and the tip of the drainage conduit are arranged close to the circumferential wall of the tank and in the direction along the circumferential wall, the stored water generates a rotational flow along the circumferential wall to wash the filth. Effective in preventing adhesion.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a vacuum tank according to an embodiment of the present invention.

FIG. 2 is a view similar to FIG. 1 according to another embodiment.

3 is a cross-sectional view of the vacuum tank shown in FIG.

FIG. 4 is a view similar to FIG. 1 of a vacuum tank of a separate embodiment.

FIG. 5 is a piping system diagram of a vacuum tank according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tank main body 11 Support plate 13 Bottom part 14 Check valve 15 Discharge pipe 2 Drainage introduction pipe 21 Drainage introduction pipe end 3 Air pipe 31 Air pipe pipe end 34 Air pipe nozzle 4 Float 5 Exhaust pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yasuyuki Yamamoto Inventor Morita Manufacturing Co., Ltd. 680 Higashihamanancho, Fushimi-ku, Kyoto, Kyoto Prefecture (72) Ken Nakai 680 Morita Manufacturing Co., Ltd. Higashihamanancho, Fushimi-ku, Kyoto, Kyoto Prefecture Within

Claims (2)

[Scope of utility model registration request] 1. A dental vacuum tank in which a drainage introduction pipe for introducing oral cleaning drainage generated in dental treatment, an exhaust pipe of an exhaust suction pump, and a discharge pipe at the bottom are connected to pressurize the vacuum tank. A dental vacuum tank characterized in that an air tube for discharging air from a tube end is provided in the vacuum tank. 2. The pipe end of the drainage introduction pipe is arranged in the vicinity of the inner peripheral wall surface with the pipe axis at the pipe end being oriented obliquely to the inner peripheral wall surface of the vacuum tank, The dental vacuum tank according to claim 1, wherein a pipe end of the air pipe is arranged close to the pipe end of the drainage introduction pipe.