JPH10311083A - Intercepter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a function by providing a vent valve at a position above an abnormally high water level in the tank body of the vent pipe of a trap connecting pipe, and opening the valve, upon the occurrence of negative pressure in the vent pipe. SOLUTION: A vent pipe is detachably erected on a horizontal connecting pipe 10 for connecting the upper ends of a trap riser 8 and a trap downcomer 9, and a vent valve 17 is provided above a liquid level within the tank body 1 of the vent pipe. When drain water entering the tank 1 increases and a water level rises to an abnormally high level, a trap is submerged in water and then the pressure in the vent pipe drops, due to a siphon phenomenon, and the valve 17 opens. Then, the fresh air is introduced into the trap via the vent pipe and the siphon phenomenon is eliminated. At the same time, the flow of drain water from a partition chamber 6-3 to the trap is prevented. Also, oil separated from drain water and floating in the chamber 6-3 and deposited sludge are prevented from being trapped with the drain water. According to this construction, the outflow of oil or sludge can be prevented and the vent valve 17 when damaged can be easily changed, because the vent pipe is detachable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interceptor which intercepts and removes oil, grease and the like contained in waste water before discharging the waste water to a sewer pipe or the like.

[0002]

2. Description of the Prior Art A typical interceptor of the prior art is largely similar in construction to the embodiment of the invention shown in FIGS. 1 and 2, and its trap 37 is shown in FIG. Therefore, description will be made with reference to these.
A slide plate 4 is provided between the front wall 2 and the rear wall 3 of the tank body 1, and a drain port 5 is provided on the rear wall 3. These compartments form compartments 6-1, 2, and 3. And a trap 37 is disposed in the compartment 6-3. The trap 37 comprises a vertical riser pipe 8 and a lower riser pipe 9, a horizontal connection pipe 10 connecting upper ends of these two pipes 8, 9, and a discharge pipe 11 connected to a lower end of the above-described lower riser pipe 9. A cleaning lid 12 is detachably attached to the upper end opening of the downcomer 9.
Reference numeral 15 denotes a filter basket that is detachably mounted in the compartment 6-1.

[0003] In such a case, the water level in the normal tank main body 1 is changed to the standard water level 25, but the water level rises to the rising water level 26 due to the inflow of the wastewater, and the water flows into the compartment 6-1. As shown by the arrow, the drainage
The flow in the vertical direction and the flow in the forward direction are alternately repeated in the insides 2 and 3, during which the oil 13 is separated from the drainage and floats up, and the sludge 14 deposits on the bottom of the tank body 1, and the oil 13 The wastewater from which 13 has been separated is discharged to the outside via a trap 37, and the separated oil 13 and deposited sludge 14 are periodically removed.

[0004]

In such a system, the amount of wastewater flowing in the kitchen or the like during operation is temporarily or continuously increased, and the water level of the wastewater in the tank body 1 is increased to the standard water level. It rises to the abnormally rising water level 27, which is much higher than the level 25. When this occurs, the trap 37 is submerged and its internal pressure becomes a negative pressure, and the self-attracting action causes a siphon phenomenon, which significantly reduces the intercepting efficiency, and separates oil, grease and deposited sludge. There is a problem that it gets caught in the drainage, is sucked into the riser pipe, and flows out.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the conventional interceptor, to eliminate the siphon phenomenon when it occurs in the trap, to separate the oil floating from the wastewater, An object of the present invention is to provide an interceptor in which grease and sludge deposited therein are not caught in drainage and are not sucked into a rising pipe of a trap and flow out to the outside.

[0006]

According to the present invention, in order to achieve the above object, the invention according to claim 1 is provided with an inflow port on the front wall of the tank body and a drain port on the rear wall. A trap having a vertical suction pipe, a horizontal discharge pipe, and a connecting pipe connecting both of these pipes at a drain port, wherein a vent pipe is erected on the connecting pipe. The vent pipe is provided with a vent valve above the abnormally high water level in the tank body, and the vent valve is opened when the inside of the vent pipe becomes negative pressure. .

According to a second aspect of the present invention, in the first aspect of the present invention, the ventilation pipe is detachably provided on the connecting pipe.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of the present invention shown in FIGS. 1 to 5, the trap 7 is different from the conventional trap 37.
Since many parts are the same, such parts are denoted by the same reference numerals, description thereof will be omitted, and different parts will be mainly described.

In this trap 7, a vent pipe 16 is provided upright on the connecting pipe 10, and a vent valve 17 is provided in the vent pipe 16 above the liquid level in the tank body 1. When the inside of the ventilation pipe 16 becomes a negative pressure, it is opened. The ventilation valve 17 is configured as shown in FIGS. 4 and 5, and the ventilation pipe 16 is detachably attached to the opening of the connecting pipe 10. A support rod 18 is laid horizontally on the upper opening of the ventilation pipe 16, and a guide rod 21 suspended from the cover 19 is attached to the support rod 18, and the ventilation is provided between the outer circumference of the ventilation pipe 16 and the inner circumference of the cover 19. gap
A guide member 23 is vertically movably fitted to the guide rod 21, and a valve member 24 made of a rubber seal is attached to the guide tube 23 so as to open the ventilation gap 22 when the guide tube 23 rises and close when the guide tube 23 descends. Have been.

In such a structure, when the inside of the trap 7 is in a normal non-load state, the valve member 24 descends to close the ventilation gap 22 as shown in FIG. Prevents leakage. When the amount of drainage flowing into the tank main body 1 increases and the water level rises to the abnormally high water level 27, the trap 7 is submerged and a siphon phenomenon occurs, and the pressure in the ventilation pipe 16 decreases. I do. Due to the pressure difference between the inside and outside at this time, as shown in FIG.
Rises to open the ventilation gap 22, introduces outside air into the trap 7 through the ventilation pipe 16 to eliminate the siphon phenomenon, and prevents the inflow of drainage into the trap 7 from the compartment 6-3. In the compartment 6-3, the oil 13 separated from the drainage and floating, and the sludge 14 deposited thereon are prevented from being caught in the drainage, and are sucked into the riser pipe 8 of the trap 7. Does not leak out.

[0011]

The present invention is as described above. According to the first aspect of the present invention, an inflow port is provided on a front wall of a tank body, and a drain port is provided on a rear wall. Oriented suction tube,
In an interceptor provided with a trap having a lateral discharge pipe and a connecting pipe connecting these two pipes, a vent pipe is erected on the connecting pipe, and the vent pipe is located above the abnormally rising water level in the tank body. A ventilation valve is provided at the top, and this ventilation valve opens when the inside of the ventilation pipe becomes negative pressure, so when a siphon phenomenon occurs it disappears, it is separated from the drainage and rises There is an effect that the oil and the sediment that are deposited are not caught in the drainage, are sucked into the riser pipe of the trap, and do not flow out.

According to the second aspect of the present invention, since the ventilation pipe is detachably provided on the connecting pipe, when the ventilation valve is damaged, the ventilation valve can be easily replaced. .

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line 2-2 in FIG.

FIG. 3 is a sectional view taken along line 3-3 of FIG.

FIG. 4 is a vertical cross-sectional view of the same vent valve in a closed state.

FIG. 5 is a vertical sectional view of the vent valve in an open state.

FIG. 6 is a sectional view similar to FIG. 3 of a conventional interceptor of the same type as the present invention.

[Explanation of symbols]

 1 tank body 2 front wall 3 rear wall 4 slide plate 5 drainage port 6 compartment 7 trap 8 ascending pipe 9 descending pipe 10 connecting pipe 11 discharge pipe 12 cleaning lid 13 oil 14 sludge 15 filtration basket 16 ventilation pipe 17 ventilation valve 18 support Rod 19 Cover 21 Guide rod 22 Ventilation gap 23 Guide pipe 24 Valve member 25 Standard water level 26 Rising water level 27 Abnormal rising water level

Claims (2)

[Claims] 1. A drain port is provided on a rear wall of a tank body, and a vertical ascending pipe and a descending pipe are connected to the drain port, a horizontal connecting pipe connecting upper ends of both pipes, and In an interceptor provided with a trap having a discharge pipe connected to a lower end of the pipe, a vent pipe is erected on the connecting pipe, and the vent pipe has a vent valve above an abnormally rising water level in the tank body. An interceptor, wherein the vent valve is opened when the inside of the vent pipe becomes negative pressure. 2. The interceptor according to claim 1, wherein the ventilation pipe is detachably provided on the connecting pipe.