JPS6333606Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a sedimentation drainage tank for wastewater containing fine solids, such as wastewater generated during dental treatment.

In dental treatment, when cutting plaster molds, etc., it is necessary to wash away fine solids with water, and a large amount of wastewater contaminated with these solids must be drained away. However, discharging such sewage as it is causes problems such as clogging of the discharge equipment, so conventionally the sewage is temporarily stored in a tank to allow the solids to settle, and only the supernatant water is drained to remove the solids. A solid matter trap is used for separate treatment.

In conventional solid matter traps such as those mentioned above, when wastewater flows in from the wastewater inflow pipe, the water in the drain tank is disturbed by the impact, and the solids that have settled have been thrown up and discharged along with the water. There was a problem.

In order to solve the above problems, this idea prevents water disturbance by dispersing the inflowing sewage into the surrounding area and letting it flow gently onto the water surface located directly below the diffusion plate. The present invention provides a diffusion device configured to do this.

This invention will be described in detail below based on embodiments shown in the accompanying drawings.

In the figure, 1 is the main body of the interceptor, which is a box-shaped container with an open top, and a drain pipe 2 for discharging treated water to the sewer is fixed to one side wall, and its inner end is T-shaped. The upper end is closed and the lower end is opened to form a trap as an inlet for water.

Reference numeral 3 denotes a strainer which is detachably fitted into the main body 1, has a box shape with an upper opening, and is supported by a plurality of support pieces 4 provided on the bottom of the main body 1. A discharge port 5 covered with a mesh is provided on one side wall of the strainer 3, and a partition wall 6 is provided inside the discharge port 5, and a communication path 7 is formed between the lower end of the partition wall 6 and the bottom of the strainer 3.

Reference numeral 8 denotes a support tube provided at the center of the bottom of the strainer 3, into which the lower end of the column 9 is detachably fitted.

Reference numeral 10 denotes an umbrella-shaped diffuser plate, which is fixed to the upper end of the support column 9. However, the planar shape of the diffuser plate 10 is not limited to the circular shape as shown in the illustration, but can also be square or polygonal. be.

The lower edge of the diffusion plate 10 is placed above the lower edge of the discharge port 5, so that the water surface of the waste water flowing into the strainer 3 and flowing out from the discharge port is on the diffusion plate 10.
It should always be below the lower edge of the partition wall 6, and the lower edge of the partition wall 6 should also be below the water surface.

Reference numeral 11 denotes a cover plate that is detachably attached to the upper opening of the main body 1. A sewage inflow pipe 12 is attached to this cover plate 11, and the center of the lower end opening of this inflow pipe 12 and the center of the diffusion plate 10 are aligned. We are doing so.

In addition, 13 in the figure is a drain hole provided in the main body 1, which is usually closed with a plug. Also, strainer 3
Handles 14 are fixed on both sides of the upper part.

This device has the above-mentioned configuration, and the waste water generated by cutting plaster or the like is discharged from the inflow pipe 12 onto the diffusion plate 10 through a pipe (not shown), enters the strainer 3, and precipitates solid matter. The supernatant water flows into the main body 1 from the discharge port 5, passes through the drain pipe 2, and flows to the sewer pipe.

In the above-mentioned operation, since there was no diffusion plate 10 in the conventional system, the wastewater flows from the inflow pipe 12 to the strainer 3.
The water flows directly onto the surface of the water, but the impact causes severe turbulence in the water. For this reason, the solid matter that had settled at the bottom of the strainer 3 rose up again, mixed with water, and exited from the discharge port 5, resulting in a poor sedimentation separation effect.

However, in the case of this device, the waste water discharged from the inflow pipe 12 hits the top of the umbrella-shaped diffuser plate 10 and is evenly spread around, so the energy of the falling water is absorbed, creating quiet ripples. The water flows over the diffusion plate 10 in the form of a film, and falls uniformly from the entire circumference of the diffusion plate 10 onto the water surface. For this reason, the impact of the collision between the falling water and the water surface is significantly reduced, and although the water near the water surface in the strainer 3 moves a little, the water near the bottom hardly moves, so the precipitated solids fly up. Things like this will almost never happen. Therefore, by providing the device of this invention in a blocker, the solid matter separation effect can be significantly enhanced. Also, the separated water coming out of the strainer 3 is separated from the partition wall 6.
The water flows to the outlet 5 through the communication path 7 at the bottom of the body, which has the effect of removing dirt floating on the water surface.The strainer 3 is removable, so you can remove the strainer 3 from the main body 1. Another advantage is that precipitated solids can be easily disposed of.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an interceptor implementing this invented device, and FIG. 2 is a longitudinal sectional front view of the same. DESCRIPTION OF SYMBOLS 1... Main body of the blocker, 2... Drain pipe, 3... Strainer, 5... Outlet, 9... Support, 10...
Diffusion plate, 12...Sewage inflow pipe.

Claims (1)

[Scope of utility model registration request] In a solids blocker that allows wastewater with suspended fine solids to stand still, collects the fine solids by precipitation, and then discharges the supernatant water, a strainer with an open top can be attached and removed inside the main body of the blocker with an open top. Attach it to the
An umbrella-shaped diffusion plate is fixed to the upper end of the pillar installed in the center of the bottom of the strainer, and the lower end opening of the sewage inflow pipe is located concentrically directly above this diffusion plate, and the outlet provided on one side wall of the strainer is placed directly above the diffusion plate. The lower edge of the diffusion plate is set lower than the lower edge of the diffusion plate so that the water level of the waste water flowing into the strainer and exiting from the discharge port is lower than the lower edge of the diffusion plate, and the side wall having the discharge port is A diffusion device for a solid matter trap, which is provided with a partition wall with an appropriate gap on the inside, and a communication path between the lower edge of the partition wall and the bottom of the strainer.