JPH042226Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a grease trap.

[Conventional technology]

In recent years, most large buildings are also equipped with company cafeterias, restaurants, etc. Grease is often used in the kitchens of in-house cafeterias, restaurants, etc. in such buildings, and as a result, the waste water discharged from the kitchens contains a large amount of grease and residue. Grease is in a liquid state at high temperatures, but solidifies when cooled, so if it is poured into a drain pipe in this state, there is a risk that it will solidify and clog the drain pipe.

Grease traps have been developed that separate such wastewater from grease and other wastewater to prevent drain pipes from becoming clogged.

FIG. 7 shows this type of grease trap, and reference numeral 10 indicates a grease trap body having a rectangular longitudinal section. An inflow pipe 11 is provided on one side wall of the grease trap main body 10, through which waste water mixed with residue and grease from the kitchen etc. flows, and on the other side wall, most of the grease and residue are removed. A discharge pipe 13 is provided for discharging purified waste water. Inside the grease trap body 10, three settling chambers 19 are formed by an inflow pipe side partition plate 15 and a discharge pipe side partition plate 17. A communication path 21 is formed. Further, a net-shaped receiving basket 23 for receiving coarse residue is arranged in the settling chamber 19 into which wastewater containing residue flows from the inflow pipe 11. A weir plate 25 is provided between the inlet pipe-side partition plate 15 and the discharge pipe-side partition plate 17 to change the flow path of wastewater mixed with residue.

In such a grease trap, drainage water mixed with residue flows from the inflow pipe 11 into the receiving basket 23 for receiving coarse residue, and the communication path 2 of the inflow pipe side partition plate 15.
1. The liquid passes through the upper part of the weir plate 25 and the communication passage 21 of the discharge pipe side partition plate 17 in order to be discharged from the discharge pipe 13.

Therefore, the coarse residue contained in the residue-containing wastewater is removed by the receiving basket 23, and most of the grease 27 floats to the upper part of the settling chamber 19 between the inflow pipe side partition plate 15 and the discharge pipe side partition plate 17, and the fine residue is removed. 29 is precipitated in the lower part of the precipitation chamber 19. With such a grease trap, purified wastewater from which most of the grease 27 and residue 29 have been removed can be discharged without discharging the grease 27, thereby preventing the drain pipe 13 from clogging.

[Problem that the invention attempts to solve]

However, since such conventional grease traps have a structure in which the residue 29 is deposited at the bottom of the settling chamber 19, there is a problem that the residue 29 rots and generates a bad odor, and this odor flows back into the kitchen. be.

In addition, in order to prevent such bad odor from flowing back into the kitchen, it is necessary to periodically clean the settling chamber 19, but in the past, in order to remove the residue 29 that has settled at the bottom of the settling chamber 19, , open the heavy lid 33 located at the top of the grease trap body 10,
After pulling out each of the partition plates 15 and 17 and pulling up the receiving basket 23, each settling chamber 19 is stirred with a rod or the like to float the settled residue 29, and a large amount of water is poured into the chamber 19 along with the water from the discharge pipe 13. The problem is that it has to be released, which is very time consuming and labor intensive.

[Purpose of invention]

The present invention was made to solve the above problems, and it is possible to easily and reliably remove the residue that has settled in the settling chamber, which causes bad odors, and along with this,
To provide a grease trap capable of preventing the generation of bad odor flowing back into a kitchen.

[Means for solving problems]

The grease trap according to the present invention is provided with an inflow pipe for introducing waste water containing residue on one side wall of the grease trap main body, and a discharge pipe for discharging purified waste water on the other side wall at a position lower than the inflow pipe, A plurality of partition plates are erected inside the grease trap body to form a plurality of settling chambers, and a space is provided between the partition plates and the bottom of the grease trap body to form a communication path; In the grease trap that settles the residue of the residue-containing wastewater at the bottom of the settling chamber and floats the grease to the upper part of the settling chamber, a sediment discharge pipe for discharging the sediment is provided at the bottom of the settling chamber; A shutoff plug is provided at the entrance of the sediment discharge pipe.

[Effect of invention]

In the present invention, a sediment discharge pipe is provided at the bottom of the sedimentation chamber to discharge the sediment, and a shutoff valve is provided at the inlet of this sediment discharge tube, so that cleaning to discharge the sediment deposited in the sedimentation chamber is possible. When the valve at the inlet of the sediment discharge pipe is opened, the sediment is sucked into the sediment discharge pipe, passes through the sediment discharge pipe, and is discharged into the sewer pipe. On the other hand, in normal cases, the valve of the sediment discharge pipe is kept closed to allow the sediment to settle.

[Example of idea]

Hereinafter, details of the present invention will be described with reference to an embodiment shown in the drawings.

Figures 1 and 2 show an embodiment of the grease trap of the present invention, with reference numeral 40 in the figures.
1 shows a grease trap main body having a rectangular longitudinal section. An inflow pipe 43 is provided on one side wall of the grease trap main body 40, through which residue-containing drainage water mixed with residue and grease from the kitchen etc. flows, and on the other side wall, most of the grease and residue are removed. A discharge pipe 45 is provided for discharging purified waste water. This discharge pipe 45 has a T-shaped outlet portion 4.
7 and a tube portion 49. The upper part of this T-shaped outlet part 47 extends above the pipe part 49, and the lower part extends below the pipe part 49. The discharge pipe 45 is configured in this way,
Further, since grease has the property of being lighter than water and floating on water, the grease is not discharged from the T-shaped outlet portion 47 of the discharge pipe 45.

Three precipitation chambers 55, 57, and 59 are formed inside the grease trap main body 40 by erecting an inflow pipe side partition plate 51 and an discharge pipe side partition plate 53. A communication passage 61 is formed in the lower part of the inflow pipe side partition plate 51 and the discharge pipe side partition plate 53. This communication path 61 is formed by providing a space between the bottom 62 of the grease trap main body 40 and each partition plate 51, 53. or,
Each of the partition plates 51 and 53 is formed to be slidable, and the flow rate passing through the communication path 61 can be freely changed.

A settling chamber 55 into which wastewater mixed with residue flows from the inflow pipe 43 has a net-shaped receiving basket 6 for receiving coarse residue.
3 is placed. A weir plate 65 is provided between the inflow pipe-side partition plate 51 and the discharge pipe-side partition plate 53 to change the flow path of wastewater mixed with residue.

A U-shaped siphon-type trap 67 is provided at the bottom of the settling chambers 55, 59 for discharging the residue that is the sediment, and the end of this trap 67 is disposed at the bottom of the settling chambers 55, 59.
It is connected to a sewer pipe 69 whose water level is lower than the bottom of the pipes 7 and 59. As shown in FIG.
It is fixed so that it can be opened and closed freely. Also, hinge 75
An opening/closing string 77 is attached to the opening/closing stopper 73 on the opposite side, and this opening/closing string 77 connects a predetermined location to the holder 7.
8, it is slidably attached. The end of the opening/closing string 77 extends to the inspection lid 80 of the lid 79 disposed on the upper part of the grease trap main body 40, and is fixed to the holder 78 so as not to fall due to its own weight.

In the grease trap configured as described above, as shown in FIG. 4, waste water mixed with residue and grease from the kitchen flows from the inflow pipe 43, and coarse residue is sent to the receiving basket arranged in the settling chamber 55. 6
3, and the fine residue passes through a receiving basket 63. The residue-containing waste water mixed with this fine residue passes through the communication path 61 of the inflow pipe side partition plate 51,
The grease 83 is floated to the upper part of the settling chamber 57 by the weir plate 65, and by this time the relatively heavy residue 81 has settled, and most of the grease 83 has floated to the upper part of the settling chamber 57. The residual wastewater that has passed through the upper part of the weir plate 65 passes through the communication passage 61 of the discharge pipe side partition plate 53, flows into the settling chamber 59, and flows into the discharge pipe 45.
The water flows toward the outlet portion 47 of. This precipitation chamber 59
Then, relatively light residue 81 settles and a small amount of grease 83 floats. Then, the purified wastewater from which most of the grease 83 and residue 81 have been removed is discharged into the discharge pipe 4.
It is discharged from 5.

Further, a siphon-type trap 67 for discharging the residue 81 as a sediment is provided at the bottom 62 of the settling chambers 55, 57, and 59, and an opening/closing stopper 73 that can be operated from the inspection lid 80 is provided at the entrance 71 of the siphon-type trap 67. Since this is provided, when cleaning to discharge the residue 81 that has settled in the settling chambers 55, 57, 59,
By pulling the opening/closing string 77 attached to the opening/closing valve 73 from the inspection lid 80, as shown in FIG. Due to the difference, the water is sucked into the siphon-type trap 67, passes through the siphon-type trap 67, and is discharged into the sewer pipe 69.

On the other hand, in the normal case, the siphon type trap 6
Keep the opening/closing valve 73 of 7 closed, and remove the residue 8.
1 is precipitated.

Therefore, in such a grease trap, the grease 83 can be removed without removing the entire lid 79 by simply removing the light inspection lid 80 and operating the opening/closing string 77 fixed near the inspection lid 80. The residue 81 that has settled in the precipitation chambers 55, 57, and 59 can be easily and reliably removed without being discharged, and accordingly, it is possible to prevent the generation of bad odors that flow back into the kitchen.

In this embodiment, the case where the weir plate 65 is arranged between the inflow pipe side partition plate 51 and the discharge pipe side partition plate 53 has been described, but as shown in FIG. Also good. In this case, the residue-containing wastewater flows slowly after passing through the communication path 61 of the inflow pipe side partition plate 51, so the grease 8
3 is this inflow pipe side partition plate 51 and discharge pipe side partition plate 5
Most of the residue 81 floats in the precipitation chamber 57 sandwiched between 3 and 3, and the residue 81 settles in the precipitation chambers 55, 57, and 59. Therefore, siphon-type traps 6 are installed in the precipitation chambers 55 and 59.
7, substantially the same effect as the above embodiment can be obtained.

Further, in this embodiment, a U-shaped siphon-type trap 67 was used as the sediment discharge pipe, but substantially the same effect as in the above embodiment can be obtained even with a straight pipe.

Further, in this embodiment, the opening/closing stopper 73 is fixed to the entrance portion 71 with a hinge 75 so as to be openable/closable, and the opening/closing string 77 is slidably attached to the opening/closing cord 77 with a holder 78. Even if the opening/closing string 77 is fixed to the central part, and the handle 85 is fixed to the tip of the string 77, and the handle 85 is fixed to the hook 87 near the inspection lid 80, pulling the handle 85 will cause almost the same effect as in the above embodiment. A similar effect can be obtained. Further, in this embodiment, the opening/closing valve 73 is configured to be opened and closed manually, but it goes without saying that a solenoid valve may be disposed at the inlet portion 71 and operated.

[Effect of idea]

As mentioned above, in the present invention, a sediment discharge pipe for discharging sediment is provided at the bottom of the sedimentation chamber, and a shutoff valve is provided at the entrance of this sediment discharge pipe, so that the sediment that causes bad odor can be removed. The residue can be easily and reliably removed, and it is possible to prevent the generation of bad odors that flow back into the kitchen.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the grease trap according to the present invention. FIG. 2 is a plan view showing the inside of the grease trap of FIG. 1. Third
The figure is a longitudinal sectional view showing the vicinity of the inlet of the sediment discharge pipe of the grease trap according to the present invention. FIG. 4 is an explanatory diagram showing the flow of waste water mixed with residue in the grease trap of the present invention. FIG. 5 is a longitudinal cross-sectional view showing the grease trap according to the present invention with the valve of the sediment discharge pipe opened. FIG. 6 is an explanatory diagram showing the flow of waste water mixed with residue when there is no weir plate in the grease trap according to the present invention. FIG. 7 is a perspective view showing another example of the grease trap opening/closing valve according to the present invention. FIG. 8 is a longitudinal sectional view showing a conventional grease trap. Explanation of symbols of main parts, 40... Grease trap body, 43... Inflow pipe, 45... Outlet pipe,
51... Inflow pipe side partition plate, 53... Outlet pipe side partition plate, 55, 57, 59... Sedimentation chamber, 61... Communication passage, 67... Siphon type trap, 71... Inlet section, 73... Open/close valve.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An inflow pipe for introducing wastewater containing residue is provided on one side wall of the grease trap body, and a discharge pipe for discharging purified wastewater is provided on the other side wall at a position lower than the inflow pipe. A plurality of partition plates are erected inside the grease trap body to form a plurality of settling chambers, and a space is provided between the partition plates and the bottom of the grease trap body to form a communication path. In the grease trap for forming a grease trap, the residue of the waste water mixed with residue is settled at the bottom of the settling chamber, and the grease is floated to the upper part of the settling chamber, a sediment discharge pipe is provided at the bottom of the settling chamber for discharging the sediment. 1. A grease trap characterized in that a shutoff plug is provided at an inlet of the sediment discharge pipe. (2) The grease trap according to claim 1, wherein the sediment discharge pipe is a siphon-type trap and is connected to a sewage pipe at a water level lower than the bottom of the settling chamber. (3) The grease trap according to claim 1 or 2 of the utility model registration claim, wherein the opening/closing stopper is attached to be openable/closable by operation from the inspection lid.