JPH0743251Y2 - Grease trap device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grease trap device used for removing oil and fat contained in kitchen drainage.

[0002]

2. Description of the Related Art A conventional grease trap is as shown in FIG. 2, in which a bucket tank side 1, a sedimentation tank 2 and a trap tank 3 are provided in this order from the upstream side of the liquid to be treated w. In recent years, a proposal has been made that an aeration pump is used to perform aeration treatment of such a grief trap, that is, a fusible pipe of the aeration pump is provided and air is ejected.

[0003]

[Problems to be Solved by the Invention] Although the one using the aeration pump described above has a temporary effect on the treatment of oils and fats in the tank, the equipment cost is large, but the aeration disturbing action in the conventional tank configuration causes There is a problem that the discharge water on the take-out side is adversely affected. An object of the present invention is to provide a grease trap device that can solve the above problems.

[0004]

In order to achieve the above object, the present invention divides the apparatus into four tanks, namely, a bucket tank,
It consists of four tanks, an ejector processing tank, a sedimentation tank, and a trap tank. The ejector processing tank has the suction port of the ejector directed from the settling tank side to the liquid upper surface on the side where the liquid to be treated flows, and the discharge port is the lower part. In the configuration, the openings are arranged in the same direction. The suction port of the ejector may be opened toward the settling tank side.

[0005]

[Effect] The ejector sucks oils and fats together with the atmosphere from the suction port and ejects it from the discharge port to circulate the liquid to be treated in the tank so as not to adversely affect the settling tank, and to be treated. It is possible to achieve highly efficient distributed processing of objects.

[0006]

EXAMPLES Specific examples of the present invention will be described below.
FIG. 1 is a sectional view of the device of the present invention, wherein 1 is a bucket tank into which polluted water is introduced, 2 is a sedimentation tank, and 3 is a trap tank.

However, an ejector treatment tank 4 is provided between the bucket tank 1 and the sedimentation tank 2, and an aeration ejector 5 is provided in the tank 4 close to the sedimentation tank 2 as shown in the drawing. That is, in addition to opening the suction port 5b of the ejector nozzle 5a toward the vicinity of the liquid surface on the inflow side of the liquid to be treated, the discharge port 5c is directed toward the bottom of the liquid tank 4 along the same bottom surface as above. Open. 6 pumps in the drawing, 7
a is a delivery tube, 7b is a suction tube, and B is a bell mouth.

Further, 8 is a peripheral wall of each tank, 8a, 8b and 8c.
Is a partition wall of each adjacent tank, 9a and 9b are baffles, 10
Is a bucket, and 11 is a discharge pipe having a trap function.

In the apparatus of the above-mentioned embodiment, when the polluted water w containing oil and fat reaches the bucket tank 1, this polluted water w
After being filtered by the bucket 10, reaches the inside of the ejector processing tank 4 through the passage a1 below the partition wall 8a, where the flow direction is changed upward by the baffle plate 9a and then temporarily retained, It reaches the settling tank 2 via a passage a2 below the partition wall 8b, and again, the flow direction thereof is changed upward by the baffle plate 9b, and then it is temporarily retained, and further traps via a passage a3 below the partition wall 8c. After reaching the tank 3, it is discharged to the outside through the discharge pipe 11.

In the flow process of the polluted water w, in the ejector treatment tank 4, the ejector 5 provided in the tank 4 is actuated to remove oil and fat near the liquid surface through the suction port 5b opened near the liquid upper surface with the atmosphere. The oil is sucked and jetted vigorously from the discharge port 5c located near the bottom of the tank so as to circulate in the direction of the arrow, thereby promoting miniaturization and emulsification of the oil lipid in the tank. On the other hand, due to this circulation, the activity of bacteria becomes more active, and a highly efficient decomposition action of oil lipids and the like is performed. Then, the treated liquid w reaches the settling tank 2, and in the following, the clarifying liquid is discharged from the discharge pipe 11 of the adjacent trap tank 3 by the conventional sedimentation processing. In this case, the settling tank 2 can be equipped with the suction port 5b of the ejector 5 symmetrically in the opposite direction to the tank 4 side in the case where there is unprocessed oil and fat as shown in the figure.

[0011]

[Effects of the Invention] According to the present invention described above, the equipment cost is low and the oil and fat in the liquid tank can be effectively decomposed to prevent the generation of offensive odors and to prevent cleaning. It greatly contributes to labor saving in maintenance management.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the device of the present invention.

FIG. 2 is a sectional view showing a conventional example.

[Explanation of symbols]

 1 Bucket tank 3 Trap tank 4 Ejector processing tank 5 Ejector 5b Suction port 5c Discharge port

Claims (1)

[Scope of utility model registration request] 1. The apparatus is configured with four tanks of a bucket tank, an ejector treatment tank, a sedimentation tank, and a trap tank, and the ejector treatment tank has a suction port of the ejector on the liquid upper surface from which the liquid to be treated flows from the sedimentation tank side. The grease trap device is characterized in that the discharge port is opened toward the same side and the discharge port is opened in the same direction side at the lower part thereof.