JPS64466Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is a method for separating and collecting oil mixed in wastewater and discharging only water.
The present invention relates to an oil separator called a grease interceptor, and more particularly to a trap installed in such an oil separator to prevent odors from entering the oil separator through an outflow pipe.

Prior Art An example of a conventional oil separator is shown in FIGS. 7 and 8. This oil separator has a main body 01 with partition plates 02 and 03 separated into an inflow chamber 04 and an oil separation chamber 05. , an outflow compartment 06, and a dam plate 07 is provided at the bottom of the oil separation compartment 05. The wastewater is filtered to remove coarse garbage in the basket 08, enters the inflow chamber 04, and then enters the oil separation chamber 05. However, the fine garbage in the water is deposited at the bottom of the upstream side of the dam plate 07, and the oil is separated into the oil separation chamber. It separates and floats upward in compartment 05. Then, only water flows out through the lower part of the partition plate 03 into the compartment 0.
6, flows into the outflow pipe 09 from the outflow port 010 at the upper end of the outflow pipe 09 standing up in the compartment 06, and is led to a drainage ditch or the like.

The outlet 010 of the outlet pipe 09 is connected to the outlet 010 of the outlet pipe 09.
The oil separator is covered with a trap 011 so that the odor that travels back from the drainage ditch or the like does not leak into the oil separator or to the outside through the oil separator. This trap 011 consists of a cylindrical portion 012 extending along the water flow pipe 09 and an end plate portion 013 that closes the upper end of this cylindrical portion 012.
The central part of the end plate part 013 is tightened with a bolt 015 and a nut 016, so that it is attached at a distance from the outlet 010 to a mounting piece 014 extending diametrically across the outlet 010 of No. 9. .

Problems to be Solved by the Invention However, in such conventional traps, the odor trapped in the space formed between the trap 011 and the water surface WL is caused by the It was easy for the information to be leaked to the outside through

In addition, when inspecting and cleaning the inside of the outflow pipe 09,
The entire trap 011 must be removed, and when reinstalling the removed trap 011, the bolt holes in the end plate portion 013 must be aligned with the bolts 015 within the narrow outflow compartment 06 and tightened with the nuts 016. , which required quite tedious work.

Means and Effects for Solving the Problems The present invention solves these problems, and for this reason, the trap according to the present invention has an end wall of the oil separator attached to the side of the bowl-shaped trap body. The trap body is provided with a protrusion that fits into a fixing member protruding from the inner surface, an opening at the closed end of the trap body, and a lid member for airtightly closing the opening.

According to the present invention, the trap body is permanently fixed to the oil separator by fitting the protrusion provided on the side surface into the fixing member protruding from the inner surface of the side wall of the oil separator. When inspecting or cleaning the outflow pipe, it is not necessary to remove the entire trap, but only the lid member, which makes the work easier.

Further, sufficient airtightness is maintained between the opening of the trap body and the lid member, so that odor does not leak to the outside.

Embodiment FIGS. 1 to 3 show an embodiment of the present invention. Reference numeral 1 denotes the oil separator main body, which is made of a stainless steel plate and shaped like a rectangular parallelepiped container. A first separation plate 2, a second separation plate 3, and a third separation plate 4 are respectively inserted into the oil separator body 1 from above across the oil separator body 1. The interior is divided into an inlet compartment 5, an oil separation compartment 6, and an outflow compartment 7.
It is divided into Usually, a passage 2a is left between the bottom plate 1a of the oil separator main body 1 and the lower edge of the first separation plate 2, and a passage 4a is also left between the bottom plate 1a and the lower edge of the third separation plate 4. There is. A window-like through hole 3a is provided in the upper part of the second separation plate 3. Reference numeral 8 denotes a basket, and the wastewater flowing into the basket 8 passes through the inflow compartment 5 and the oil separation compartment 6 and reaches the outflow compartment 7, during which time contaminants are deposited and oil is separated. is essentially the same as the conventional oil separator described above.

An end wall 1 of the oil separator body 1 facing the outflow compartment 7
1 and 2, an outflow pipe 9 made of stainless steel is welded to the lower part of end wall 1b, and the outflow pipe 9 rises upward within the outflow compartment 7, and its upper end forms an outflow port 10 that opens into the outflow compartment 7. The water level WL in the oil separator body 1 is determined by the height of this outflow port 10. A tubular fixing member 11, also made of stainless steel, is welded to the inner surface of the upper part of end wall 1b and protrudes into the outflow compartment 7.
The tubular fixing member 11 is a member for fixing a trap 12.

The trap 12 has a relatively deep bowl-shaped trap body 13, as shown in FIG. This trap body 13 is made of, for example, ABS resin,
A tubular protrusion 14 is integrally formed on the side thereof. The inner diameter of the tubular protrusion 14 is approximately equal to the outer diameter of the tubular fixing member 11, and by applying adhesive to the inner surface of the tubular protrusion 14 and fitting it into the tubular fixing member 11, the trap main body 13 can be made with oil. It is fixed to the separator body 1. At this time, the upper part of the outflow pipe 9 enters into the trap body 13 by a depth H as shown in FIG. 1, and the space above the outlet 10 in the trap body 13 is sealed off by the water head H. Therefore, the odor that has traveled backward through the outflow pipe 9 will not enter into the outflow compartment 7 from the trap body 13.

An opening 15 is provided at the upper end surface of the bowl-shaped trap body 13, that is, at a portion corresponding to the bottom of the bowl. In this embodiment, an opening 15 provided in a trap body 13 made of an ABS resin molded product is used.
A ring-shaped opening member 16 made of vinyl chloride resin is inserted into the opening member 1 and bonded with adhesive to the opening member 1.
An opening 15 is formed inside 6. A flange 16a extending radially inward is provided at the upper part of the opening member 16, and a female thread 17 is formed on the inner peripheral surface of the flange 16a. A lid member 19 having a male screw 18 screwed into the female screw 17 is screwed into the opening member 16, and the lid member 19 is screwed into the opening member 16.
The lower surface of the flange portion 19a of the opening member 9 and the upper surface of the flange 16a of the opening member 16 are pressed against each other, so that the opening portion 15 is completely sealed. Flange part 1
A suitable packing material may be interposed between 9a and flange 16a. The lid member 19 is also made of vinyl chloride resin, and a handle 20 for handling is integrally formed on the upper surface of the lid member 19.

In the oil separator as described above, the inside of the outflow pipe 9 is sometimes inspected or cleaned from the upper outflow port 10. In this case, in this embodiment, the lid member 19 is turned. Trap body 1
3, and there is no need to remove the entire trap 12, inspection and cleaning work can be performed extremely easily. Further, since no bolts are used to fasten the trap body 13 and the lid member 19, there is no risk of failure due to bent or broken bolts.

In the above embodiment, the opening member 16 was adhesively fixed to the trap body 13 and the female thread 17 was provided on the opening member 16, but as shown in FIG. You may. In addition, as shown in FIG. 5, the trap body 1
A male screw 21 may be provided on the outer peripheral surface of the lid member 19, and a female screw 22 may be provided on the inner peripheral surface of the lid member 19. Furthermore, the sixth
As shown in the figure, the lid member 19 may be fastened to the upper end surface of the trap body 13 by bolts 23 at several locations along its periphery. The lid member 19 is provided with legs 24 that fit into the inner surface of the trap body 13. It goes without saying that many other modifications are possible within the scope of the present invention.

Effects of the Invention As described above, the trap according to the present invention has a protrusion on the side of the trap body which is shaped like a bowl and that engages with a fixing member protruding from the inner surface of the end wall of the oil separator. Since an opening is provided at the closed end and a lid member is provided to airtightly close the opening, odor from the outflow pipe will not leak to the outside, and inspection and cleaning of the outflow pipe will be easy. Furthermore, it has sufficient strength against damage.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an oil separator equipped with a trap according to the present invention, Fig. 2 is a longitudinal sectional view showing an end wall portion of the oil separator, Fig. 3 is a sectional view of the trap, and Fig. 4 is a longitudinal sectional view of an oil separator equipped with a trap according to the present invention.
6 through 6 are partial sectional views showing the attachment portion between the trap body and the lid member in other embodiments, and FIGS. 7 and 8 are drawings showing a conventional oil separator and trap. 1...Oil separator main body, 2...First separation plate, 3...
...Second separation plate, 4...Third separation plate, 5...Inflow compartment, 6...Oil separation compartment, 7...Outflow compartment,
8... Basket, 9... Outflow pipe, 10... Outlet, 11... Tubular fixing member, 12... Trap,
13... Trap body, 14... Tubular protrusion, 1
5...Opening part, 16...Opening member, 17, 22...
...female thread, 18, 21...male thread, 19...lid member, 20...handle, 23...bolt, 24...leg.

Claims (1)

[Scope of utility model registration request] In a trap provided in an oil separator and covering an end of an outflow pipe from the oil separator, a fixing member protruding from the inner surface of the end wall of the oil separator is fitted on the side of the bowl-shaped trap body. In addition to providing a protrusion to
A trap for an oil separator, characterized in that the trap body has an opening at the closed end and a lid member for airtightly closing the opening.