JP6850519B2 - Blocker - Google Patents

Description

The present invention relates to a interceptor that separates and collects oils and fats from the wastewater before the oils and fats contained in the wastewater flow out into the sewage.

If drainage containing oil, gasoline, earth and sand, etc. is drained into the sewage as it is, there is a risk that the function of the piping equipment will be hindered, such as blocking or damaging the sewer pipe, etc., install a interceptor at an effective position. It is obligatory to do. As an example of the interceptor, there is a grease interceptor that separates and collects oils and fats from the wastewater discharged from the kitchen of a restaurant.

The grease trap has a drainage inflow chamber that has a storage tank body and is provided with a basket for removing the residue and dust mixed in the drainage that has flowed into the storage tank body from the gutter or pipe, and removes the residue and dust. A separation chamber that separates oils and fats from the drainage after drainage and a drain trap that prevents odors and insects from entering from the drainage pipe are provided at the outlet that discharges the drainage from which the oils and fats have been separated to the drainage pipe. Be done.

Currently, the permissible inflow flow rate (maximum flow rate of the inflow flow rate that can maintain the interception efficiency of the interceptor) defined to maintain the processing capacity of the grease interceptor is the SHASE standard (SHASE-S217. Air Conditioning and Sanitary Engineering Society standard). If the interception efficiency required by (.) Can be maintained, the decision of the flow rate is left to each manufacturer. Further, in general, in the natural floating separation method, the flow velocity of drainage in the storage tank is slow, and the larger the separation tank, the easier it is for oils and fats to float. However, as described above, the drainage flowing into the storage tank. The limit on the permissible inflow rate of the water tank is abolished and the amount tends to increase, and as a result, the flow velocity in the storage tank tends to increase. In addition, since the space under the ceiling or under the floor where the storage tank is embedded is limited, the size of the storage tank is naturally limited.

Comparing storage tanks of the same capacity, the larger the ratio of the surface area of the separation chamber (the tank that floats and separates the fats and oils in the wastewater) to the main body of the storage tank, the higher the separation treatment efficiency (interference efficiency) of the fats and oils. However, according to the SHASE standard, in principle, in order to minimize damage when the rupture phenomenon described later occurs, the middle part of the storage tank (corresponding to the separation chamber) and the outflow part of the drainage including the drain trap It is recommended to provide a separator between them. As shown in FIG. 4 showing Patent Document 1, since the conventional partition wall 103 is provided to fill the width of the storage tank in a form orthogonal to the drainage flow of the storage tank main body 101, the surface area of the separation chamber 102 occupying the storage tank main body 102. It is difficult to increase the ratio of.

By the way, regarding the height position of the outlet 104 provided in the main body of the storage tank, not only the height (deep and shallow) of the storage tank such as deep type and shallow type, but also the shape of the structure of the building and the piping in the building. The layout is determined according to the layout of the piping equipment connected to the sewer pipe downstream from the outlet of the storage tank. In Patent Document 1, the outlet 104 is provided at a position considerably lower than the standard water level WL, and the drain trap 105 used in this case is often a so-called P-type or one-type. Further, in FIG. 5 showing Patent Document 2, the outlet 204 is provided at a height position equal to the standard water level surface WL or at a height such that the pipe core is slightly higher. Not limited to shallow storage tanks, other drain traps that are used when the outlet is installed at the same height as the standard water level or at a height where the pipe core is slightly higher are T-type and elbow. There are molds, partition walls, etc.

The rupture phenomenon can be broadly divided into those caused by the relationship between the height of the outlet provided in the storage tank and the shape of the drain trap, and those caused by the arrangement of piping equipment downstream from the outlet of the storage tank. ..

A typical example of the former will be described with reference to FIG. The interceptor 100 is a deep storage tank main body 101, in which the outlet is provided at a position considerably lower than the standard water level WL, and a P-type trap is adopted as the drain trap used for the outlet. .. The drainage that has flowed into the drain trap flows down the vertical straight pipe portion 106 and flows down along the inner peripheral surface of the curved pipe portion 107 on the bending direction side, so that it collides with the bottom surface of the curved pipe portion 107 and bounces upward. It may collide with the drainage that flows down in sequence, causing turbulent flow, and may stay or partially flow back. At this time, the drainage that has accumulated or flows back in the curved pipe portion 107 becomes a water plug such as blocking a part of the space in the curved pipe portion 107 to create a sealed area in the vertical straight pipe portion 106 and further flows down. The incoming drainage pulls the air in the sealed area downstream, causing a negative pressure condition, and all the drainage in the drain trap is pulled downstream and often breaks the sealed water (breaking). Occur.

On the other hand, the trap of Patent Document 2 shown in FIG. 5 is a shallow trap 200 that is preferably used in places where the space under the floor is narrow, such as a kitchen on the second floor or higher such as a high-rise building or a complex facility. In the first place, the above-mentioned rupture phenomenon is rarely caused in the height position of the outlet 204 and the overflow box type drain trap 205 shown therein. However, if the piping equipment (not shown) downstream from the outlet has a steep slope, or if there is a part that is arranged in the vertical direction, it may cause a rupture phenomenon. come.

Utility Model Registration No. 3056258 Japanese Unexamined Patent Publication No. 2012-46953

In FIGS. 4 and 5, when the rupture phenomenon is caused, not only the drainage in the drain trap but also the oils and fats floating and separated on the water level surface of the storage tank will flow out to the sewage in a large amount. , It is necessary to eliminate the negative pressure condition in the drain trap at the earliest possible stage. The rupture phenomenon is a phenomenon in which drainage is pulled downstream with a rapid force due to negative pressure, but its amount and speed are larger than the amount of drainage flowing into the main body of the storage tank, and it is characterized by being faster. The partition wall utilizes its characteristics, that is, by providing the partition wall, the speed and amount of drainage flowing into the outflow part with the drainage trap partitioned by the partition wall is reduced, and the drainage flowing into the outflow part There is a gap in the flow velocity and amount of water flowing out of the outlet. When the drainage in the partition wall flows out due to this gap, air enters the drainage trap for a moment and the negative pressure state is eliminated.

However, in Patent Document 1 shown in FIG. 4, since the partition wall 103 orthogonal to the flow of drainage is provided to the full width of the storage tank main body 101, the amount of drainage in the outflow portion is large and the negative pressure state is eliminated. In the meantime, a relatively large amount of wastewater will flow out.

Further, in Patent Document 2 shown in FIG. 5, even if the interceptor 200 itself does not cause a rupture phenomenon, if a rupture phenomenon occurs due to the arrangement of the downstream piping equipment, it is separated because there is no partition wall. All the wastewater in the storage tank 201 including the tank 202 may flow out.

Therefore, the present invention provides a interceptor capable of eliminating the negative pressure state as soon as possible even when a sealing phenomenon occurs, and securing a separation chamber for floating and separating oils and fats as wide as possible. Is the subject.

The trap according to the present invention is provided in the storage tank main body of the trap with a separation chamber for floating and separating oils and fats by utilizing the difference in specific gravity between water and oil, an outlet, and an outlet from the downstream of the outlet. It is equipped with a drain trap that prevents odors and insects from entering, and a partition is provided between the separation chamber and the drain trap so as to approach the drain trap and surround it, and the height of the lower end of the partition is set to the lower end of the drain trap. It provided lower than the height, without an outlet portion of the partition wall which is divided by a partition wall, a waste water flowing from the separation chamber to the outlet portion, the flow rate and the amount of waste water flowing out from the outlet to the downstream provided gap, the partition notch along the shape of the connecting tube of the drain trap connected to the outlet port is engaged with the drain trap provided, characterized in Rukoto.

Further, the partition wall can be partially detachably provided. Further, a gap is provided between the partition wall and the water-trap is a more 10 mm.

By providing the lower end of the partition wall lower than the height of the lower end of the drain trap, oils and fats floating in the separation chamber are less likely to scratch the lower end of the partition wall. Furthermore, since the partition wall is provided close to the periphery of the drain trap, the amount of drainage in the partition wall is very small, and if a rupture phenomenon occurs, if this small amount of drainage in the partition wall flows out, it will be generated by the partition wall. Due to the gap between the amount and speed of drainage flowing into the outflow section and the amount and speed of drainage flowing out from the discharge section, the negative pressure state is immediately resolved, and a large amount of drainage can be discharged without the oils and fats sneaking into the lower end of the partition wall. It can be prevented from leaking.

Further, since the partition wall is provided close to the periphery of the drain trap, the ratio of the separation chamber to the main body of the storage tank can be increased, and a interceptor having high oil and fat separation processing efficiency (interference efficiency) can be provided. be able to.

It is a perspective view which shows the partition wall of the interceptor which concerns on this Example. It is a perspective view which shows the partition wall of the interceptor which concerns on another Example. It is a perspective view which shows the partition wall of the interceptor which concerns on another Example. It is a side view sectional view and a plan view of a conventional interceptor. It is a side view sectional view and a plan view of a conventional interceptor.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, the same parts or corresponding parts are designated by the same reference numerals.

FIG. 1 is a diagram in which a partition wall 3 is provided so as to surround the overflow trap 205 of the interceptor 200 of FIG. The partition wall 3 is the front plate 3a, the left and right side plates 3b, and the rear plate which are parallel to the four surfaces of the overflow trap 205, the front plate 205a, the left and right side plates 205b, and the rear plate 205c on the outlet 204 side, and have the same shape as each of the four surfaces. It has 3c, has each surface of the overflow type drain trap 205, and has a size of maintaining a gap of 10 mm or more between each surface of the corresponding partition wall 3. The rear plate 3c of the partition wall 3 is provided with a notch 3e along the shape of the connecting pipe 205d provided in the rear plate 205c of the overflow type drain trap 205 and fixed to the outlet 204, and the partition wall 3 is provided with an overflow. It is detachably positioned and placed so as to surround the type drain trap 205. The height position of the lower end 3f of the front plate 3a of the partition wall 3 and the lower end 3g of the left and right side plates 3b is lower than the lower end 205f of the front plate 205a of the overflow trap 205 and the lower end 205g of the left and right side plates 205b. There is.

FIG. 2 is a view in which another partition wall 4 is provided in the same overflow type drain trap 205 as in FIG. The partition wall 4 is connected to the front plate 205a of the overflow trap 205, the front plate 4a parallel to the three surfaces of the left and right side plates 205b and having the same shape as the three surfaces, and the front portion 5 having a U-shape in a plan view. It is composed of a rear plate 4c fixed to the pipe 205d, and the partition wall 4 is formed by engaging the slits 5e provided on the downstream side lower side of the left and right side plates 4b with the slits 4e provided on the left and right side upper sides of the rear plate 4c. The front portion 5 can be mounted detachably. Reference numeral 6 is a positioning member provided so that a gap of 10 mm or more can be maintained between each surface of the overflow type drain trap 205 and each surface of the partition wall 4, and is also shown in FIG. Although not, a similar positioning member can be provided. The lower end 4f of the front plate 4a of the partition wall 4 and the lower end 4g of the left and right side plates 4b, that is, the height positions of the lower ends of the front portion 5 are the lower ends 205f of the front plate 205a and the lower ends 205b of the left and right side plates 205b of the overflow trap 205. It is provided lower than 205 g.

FIG. 3 is the same deep interceptor 100 as in FIG. 4, and shows a T-shaped drain trap 7. Reference numeral 8 is a partition wall that covers the circumference of the drain trap 7. The partition wall 8 is composed of a front plate 8a, left and right side plates 8b, and a rear plate 8c. The rear plate 8c is fixed to a connecting pipe or a storage tank body that connects the drain trap 7 to the outlet, and a front portion 9 composed of the front plate 8a and the left and right side plates 8d is detachably provided on the drain trap 7. By the way, when the storage tank main body 101 is made of FRP, the tank main body (front, rear, left and right sides) is often provided with a gentle slope. Therefore, when the rear plate 8c is provided on the storage tank main body, the rear plate 8c is provided. The plate 8c must be inclined along the slope of the tank body, but if the rear plate 8c is provided in the connecting pipe of the drain trap, the shape of the tank body is not affected. Further, the front portion 9 may have an arcuate shape in a plan view along the drain trap 7. The height position of the lower end 9a of the front portion 9 is lower than the height of the lower end 7a of the drain trap 7.

The reason why the height position of the lower end of the partition wall is lower than the height position of the lower end of the drain trap is that even if a sealing phenomenon occurs, the oils and fats floating in the separation chamber do not easily scratch the lower end of the partition wall. To do. Further, since the partition wall is provided close to the periphery of the drain trap, the amount of drainage in the partition wall is overwhelmingly smaller than the amount of drainage in the partition wall shown in FIG. In addition, the speed and amount of drainage flowing into the inside partitioned by the bulkhead is reduced, and there is a large gap between the drainage flowing into the bulkhead and the flow velocity and amount flowing out from the outlet, causing drainage inside the bulkhead. Immediately spills, air enters the drain trap for a moment, and the negative pressure condition is immediately relieved before oils and fats sneak into the lower end of the bulkhead.

101, 201 Storage tank body 102, 202 Separation chamber 3, 4, 8, 103 Partition wall 104, 204 Outlet 7, 105, 205 Drain trap WL standard water level surface

Claims (3)

The storage tank body of the trap is provided with a separation chamber for floating and separating oils and fats by using the difference in specific gravity between water and oil, an outlet, and the outlet, and odors and insects invade from the downstream of the outlet. A interceptor with a drain trap to prevent
A partition wall is provided between the separation chamber and the drain trap so as to approach the drain trap and surround the periphery, and the height of the lower end of the partition is set lower than the height of the lower end of the drain trap. The inside of the partition wall is formed as an outflow portion, and a gap is provided in the outflow portion between the flow rate and amount of the drainage flowing from the separation chamber and the drainage flowing out from the outlet to the downstream, and the partition wall is provided with the outlet. Interceptor apparatus according to claim Rukoto locked to the drain trap notch along the shape of the connecting tube of the drain trap to be connected is provided. The interceptor according to claim 1, wherein the partition wall is partially removable. The interceptor according to claim 1 or 2, wherein the gap provided between the partition wall and the drain trap is 10 mm or more.

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