JP7008937B2 - Drain trap - Google Patents

Description

The present invention relates to a drain trap for treating the wastewater of a drainage device, and more specifically, to improve the drainage performance in the drain trap and to improve the cleanability deteriorated by adopting the trap function. It is about the drain trap that was made.

Conventionally, in equipment that produces drainage by use (hereinafter referred to as "drainage equipment") such as washbasins, sinks, bathtubs, bathrooms, and washing pans with washing machines, the wastewater generated by use is discharged to the sewage side. Drainage pipes for are known.
These drainage pipes are connected to the pipes that connect to the sewage side, such as underfloor pipes, from the drainage port provided in the drainage equipment. There is a problem that the odor and pests flow back and invade the indoor side from the drainage port. Therefore, in order to solve this problem, the drainage from the drainage port is passed to the sewage side on the drainage pipe, but the drainage has a function to prevent the odor and pests on the sewage side from flowing back to the indoor side. The method of equipping the device is well known. Such a drainage device having a function of preventing odors and pests on the sewage side from flowing back to the indoor side is called a "drainage trap".

The drainage device described in Patent Document 1 is a drainage trap called a reverse bowl type drainage trap.
A trap body consisting of a casing portion having a top plate having an opening communicating with a drain port on the upper side and a bowl-shaped deodorant bowl on the bottom surface, and a discharge port provided on the side surface of the casing portion.
A flange member with a drainage port that attaches the trap body to the floor pan of the bathroom, which is a drainage device, and a tubular upper end that is watertightly connected to the drainage port, and the lower end is placed in the deodorant bowl of the trap body. It consists of a deodorant cylinder. Here, the side wall portion of the deodorant bowl is called a "water-sealing wall", and the inside of the deodorant bowl area is called a "water-sealing portion".
When the drainage generated by the drainage device flows into the trap body from the drainage port, the drainage flows into the deodorant bowl from the inside of the deodorant cylinder, overflows from the upper edge of the deodorant bowl, and then drains from the drainage port to the sewage side. Will be done.
In addition, a part of the generated drainage collects inside the deodorant bowl, which causes the drainage flow path from a part of the inside of the deodorant cylinder to the upper end of the deodorant bowl to be filled with drainage. .. Since the odor and pests from the sewage side cannot flow back to the indoor side beyond the filled portion of the flow path in the drain trap, it is possible to prevent the odor and pests from entering the room. This patent document 1. In, the drainage collected in the deodorant bowl is called "sealed water", and the drain trap described in Patent Document 1 is called a "sealed drain trap" because the trap function is generated by the sealed water.

The drainage device described in Patent Document 2 is a drainage trap called a running type drain trap, which is a casing portion having a substantially elliptical shape in a plan view and having a top plate having an opening communicating with the drain port upward. A trap body consisting of a drainage port provided on the side surface of the trap, a deodorant wall consisting of an inclined surface rising from the bottom surface provided between the opening of the plan view top plate and the drainage port, and a floor pan of the bathroom where the trap body is a drainage device. It is composed of a flange member having a drainage port, which is attached to the trap body, and a deodorizing cylinder whose upper end is watertightly connected to the drainage port and whose lower end is arranged in the deodorizing bowl of the trap body. Here, the area surrounded by the inner surface of the side wall of the trap body and the water sealing wall is called a "water sealing part".
When the drainage generated by the drainage device flows into the trap body from the drain port, the drainage flows from the inside of the deodorant cylinder into the water sealing part of the trap body, overflows from the upper edge of the water sealing wall, and then flows from the drain port. It is discharged to the sewage side.
In addition, a part of the generated drainage is collected in the water-sealed part, and as a result, the flow path from a part of the inside of the deodorizing cylinder to the upper edge of the water-sealed wall is filled with drainage. It becomes. Since the odor and pests from the sewage side cannot flow back to the indoor side beyond the filled portion of the flow path in the drain trap, it is possible to prevent the odor and pests from entering the room. This patent document 2. In, the drainage collected in the water-sealed part becomes "sealed water". Similar to the drain trap described in Patent Document 1, the drain trap described in Patent Document 2 is also called a "sealed drain trap" because the trap function is generated by sealing water.

The drainage device described in Patent Document 3 is a drainage trap called an S-type drainage trap, in which a part of a pipe body constituting a drainage pipe from a drainage port to an underfloor pipe is bent into a substantially S shape. It is composed.
When the drainage generated by the drainage device flows into the trap from the drainage port, the drainage collects in the substantially U-shaped part on the upstream side of the S-shaped bent part of the pipe body, and then overflows from the upper edge. , Drained to the sewage side. At this time, the substantially U-shaped portion on the upstream side of the substantially S-shape is called a "water-sealing portion".
In addition, a part of the generated drainage is collected in the sealed portion, so that the substantially U-shaped portion of the drainage flow path on the upstream side is filled with drainage. Since the odor and pests from the sewage side cannot flow back to the indoor side beyond the filled portion of the flow path in the drain trap, it is possible to prevent the odor and pests from entering the room. This patent document 3. In, the drainage collected in the water-sealed part becomes "sealed water". Like the drain trap described in Patent Document 1, the drain trap described in Patent Document 3 is also called a "sealed drain trap" because the trap function is generated by sealing water.

Japanese Patent Application Laid-Open No. 2003-147827 Japanese Unexamined Patent Publication No. 2000-336724 Japanese Unexamined Patent Publication No. 2002-227270

Since the water-sealed drain trap collects drainage inside to form a sealed water, its internal shape is complicated and the flow path through which the drainage passes tends to be complicated. For this reason, problems are likely to occur in terms of drainage performance for efficiently discharging wastewater and cleanability for easily cleaning and removing dirt and dust adhering to and accumulating inside after long-term use.
In each of the drain traps described in paragraphs 0003 to 0005, the S-type drain trap has the best drainage performance, and the running type drain trap and the reverse bowl are provided when the cross-sectional area of the pipe through which the drain passes is sufficiently secured. It is said that the drainage performance deteriorates in the order of the type drain trap. This is because in the S-type drain trap, the drainage flow path is simply configured from upstream to downstream so that turbulence is unlikely to occur, whereas in the running type drain trap, the lower end of the deodorizing cylinder is formed. It is derived from the fact that the drainage spreads and flows in all directions of 360 degrees in a plan view. That is, since the drainage spreads and flows in all directions of 360 degrees, half of the 360 degrees, 180 degrees, flows in the direction opposite to the discharge port, and the drainage performance deteriorates by that amount. However, in the running type drain trap, the drainage that exceeds the sealing wall flows directly toward the discharge port, and turbulence is unlikely to occur in this part, so even if it is not as good as the S-type drain trap, the reverse is true. It has relatively good drainage performance compared to bowl-type drain traps. The reverse bowl type drain trap is similar to the running type drain trap in that the drainage spreads and flows from the lower end of the deodorant cylinder in all directions of 360 degrees in a plan view, but it flows along the inner surface of the trap body. Since the drainage was further bent 90 degrees at the discharge port and discharged from the discharge port, the drainage generated turbulent flow again in the vicinity of the discharge port, and the drainage performance was even worse than that of the running type drain trap.

On the other hand, regarding the cleanability, the S-type drain trap has the worst cleanability, and the running type drain trap and the reverse bowl type drain trap are said to have the best cleanability in this order. The S-type drain trap has a shape in which the pipe body is repeatedly bent up and down, and it is difficult for a cleaning worker to put his hand in the narrow pipe body for cleaning, and cleaning tools such as brushes are also repeatedly bent up and down. It is also difficult to insert a cleaning tool into the reversing flow path, and the cleaning performance is low. In the running type drain trap and the reverse bowl type drain trap, by removing the deodorant cylinder, the cleaning worker can put his / her hand inside the trap body from the drain port, and the cleaning property is higher than that of the S type drain trap. Comparing the two, it is relatively easy to reach both inside and outside the deodorant bowl from the drain port in the reverse bowl type drain trap, whereas in the running type drain trap, it is relatively easy to reach from the drain port. Since it is relatively difficult to reach the downstream side of the deodorant wall, it is said that the reverse bowl type drain trap is easier to clean than the running type drain trap.
As described above, in the conventional drain trap, the drainage performance and the cleanability are in a contradictory relationship, and which of the drainage performance and the cleanability is prioritized has been a big problem in the drainage trap.
The present invention has been invented in view of the above problems, and provides a drain trap having good drainage performance and good cleanability.

A trap body consisting of a drainage port provided in the drainage device, a casing part into which drainage from the drainage port flows in, and a drainage port for draining the drainage inside the casing part, and a drainage port or a watertightness in the casing part. The lower part is a tubular body arranged inside the trap body, and the outer peripheral edge of the mounting part is a non-circular deodorant cylinder and the deodorant cylinder provided inside the trap body. It consists of a water-sealing wall that is placed between the lower end of the part and the drainage port to form a water seal, and with the deodorant cylinder removed, the entire flow path part inside the casing part is viewed in plan and drainage port . It is a drainage trap characterized in that it is substantially the same as or is configured to be inside the drainage port so that almost the entire area is exposed from the drainage port.
The "flow path portion inside the casing portion" in claim 1 means "a portion inside the casing portion through which drainage can pass". For example, inside the casing portion of the trap body of the first embodiment described later, the inside of the casing portion of the portion in contact with the outer surface of the connection piece is the inside of the casing portion, but the inner surface of the connection piece is drained in this portion. Is configured as a flow path through which the wastewater passes, and the inside of the casing portion of the relevant portion is covered with a connection piece and is not configured as a flow path through which drainage passes. Not included.
In addition, "almost exposed" is a part that is hidden by other members in a plan view, but the hidden width is about 10 mm, preferably 5 mm or less, and it is hidden to the extent that there is no particular problem with visual inspection or cleaning. It also includes the case where there is.

The present invention according to claim 2 is a trap main body including a drainage port provided in a drainage device, a casing portion into which drainage from the drainage port flows in, and a drainage port for draining the drainage inside the casing portion, and drainage. It has a detachable and watertight mounting part inside the mouth or casing, and the lower part is a deodorant cylinder that is a tubular body arranged inside the trap body and a cylinder part of the deodorant cylinder provided inside the trap body. It is composed of a water-sealing wall, which is arranged between the lower end of the casing and the drainage port, is configured to reach the inner surface of the casing portion, and forms a water-sealing.
With the deodorant cylinder removed, the entire flow path inside the casing is configured so that it is substantially the same as the drainage port in plan view or is inside the drainage port, so that almost the entire flow path is inside the drainage port. It is a drainage trap characterized by being configured to be exposed from.

The drain trap according to claim 1 or 2, wherein the outer peripheral edge of the attachment portion of the deodorizing cylinder has a non-circular shape in a plan view in the drain trap. Is.

According to the fourth aspect of the present invention, in the above drain trap, the watertight structure at the attachment portion of the deodorizing cylinder to the drain port or the opening is the outer surface of the mounting portion of the deodorizing cylinder and the drain port or the opening. The drain trap according to any one of claims 1 to 3, characterized in that the packing is provided between the contact points and is watertightly abutted in the side surface direction.

The present invention according to claim 5 is any one of claims 1 to 4, wherein in the drain trap, the upper end of the water sealing wall is formed in the opening in a plan view. It is a drain trap described in one.

According to the sixth aspect of the present invention, in the drain trap, a flow path of a tubular body continuous from the lower end of the tubular portion is formed on the downstream side of the lower end of the tubular portion of the deodorant cylinder, and the tubular portion is formed. The drain trap according to any one of claims 1 to 5, wherein a flow path of a pipe body continuous from the lower end is divided and formed along the flow path.

According to the seventh aspect of the present invention, in the drain trap, one of the members forming the flow path of the pipe body divided and formed along the flow path is integrally configured with the trap body. The drain trap according to claim 6, wherein the trap is characterized by the above.

According to the first and second aspects of the present invention, by removing the deodorizing cylinder, the entire flow path portion inside the casing portion is substantially the same as the drainage port in plan view, or is inside the drainage port. Since it is configured as such, almost the entire inside of the trap body can be checked and cleaned from the drain port, and the structure can be made extremely clean.
According to the third aspect of the present invention, the shape of the drain trap can be freely set. This freedom of shape is particularly suitable for running drain traps.
According to the fourth aspect of the present invention, the configuration of the drainage port or the opening and the attachment portion of the deodorizing cylinder can be clarified.
According to the fifth aspect of the present invention, the cleanability on the downstream side of the sealing wall can be improved.
According to the sixth aspect of the present invention, the drainage performance can be made to be similar to that of the S-type drain trap, and the cleanability can be improved.
According to the seventh aspect of the present invention, it is possible to reduce the number of seams and improve the cleanability by reducing the number of member configurations.

It is a reference figure of the sink which adopted the drain trap of 1st Example. It is sectional drawing of the drain trap of 1st Example. It is a reference figure which shows the member composition of the Example of FIG. It is a top view of (a) a trap main body and (b) a deodorant cylinder of 1st Example. It is a top view of the drainage trap of the first embodiment in a state where it was installed in the sink and the deodorizing cylinder was removed. It is a perspective view which shows the sink and the member composition of 1st Embodiment. It is a perspective view which shows the member composition of 1st Embodiment. It is a reference figure of the sink which adopted the drain trap of the 2nd Example. It is sectional drawing of the drain trap of 2nd Example. It is a reference figure which shows the member composition of the Example of FIG. 2 is a plan view of (a) a trap body and (b) a deodorizing cylinder of the second embodiment. It is a perspective view which shows the sink and the member composition of the 2nd Embodiment. It is a perspective view which shows the member composition of the 2nd Embodiment.

The first embodiment of the present invention will be described below with reference to the drawings.
The drain trap of the first embodiment of the present invention shown in FIGS. 1 to 7 comprises a trap main body 2 and a deodorizing cylinder 4 described below, and is attached to a sink S of a sink N and is a piping member. It is connected to the underfloor piping via P.
The trap body 2 has a substantially elliptical shape that is a non-circular shape in a plan view, has no portion that covers the upper part, and has a bottomed cylindrical casing portion 2a having an opening 2b that is completely open upward, and a trap main body. It is composed of an outer wall surface of 2 and a discharge port 2e provided on the side surface of one end of an ellipse to discharge drainage inside the casing portion 2a.
Further, the inside of the casing portion 2a is provided with a water sealing wall 3a having an inclined surface inclined upward from the vicinity of the center of the side view toward the discharge port 2e. The water sealing wall 3a is configured so that both ends thereof reach the inner surface of the casing portion 2a. At this time, the area surrounded by the inner side surface and the bottom surface of the trap body 2 and the inclined surface side of the water sealing wall 3a is called the "water sealing portion 3". Further, as shown in FIG. 4, the upper end of the water sealing wall 3a is formed in a linear shape in the casing portion 2a in a plan view so as to divide the inside of the opening portion 2b. Further, the opening 2b is provided with a ridge portion 2d and a step portion 2c in order from above. Both the ridge portion 2d and the step portion 2c are stepped portions provided inward along the inner peripheral surface of the casing portion 2a. When the trap body 2 is connected and fixed to the sink S, the lower end of the connection piece S2 of the drainage port 1 of the sink S, which will be described later, abuts on the upper surface of the ridge portion 2d to perform vertical positioning. Further, when the construction is completed, the deodorizing cylinder 4 is positioned and connected to the opening 2b of the trap body 2 by making the lower end of the mounting portion 4a of the deodorizing cylinder 4 abut on the step portion 2c.
With the above configuration, the inner surface of the casing portion 2a below the ridge portion 2d in the plan view is slightly inside the upper edge of the opening 2b by the ridge portion 2d and is open. It has substantially the same shape as the portion 2b and the drainage port 1 described later. In this way, the flow path portion inside the casing portion 2a is configured to be substantially the same as the drainage port 1 in a plan view and inside the drainage port 1, so that the flow path portion inside the casing portion 2a is formed. Has a structure in which almost the entire deodorant cylinder 4 is exposed from the drainage port 1 in a plan view when the deodorizing cylinder 4 is removed after the construction is completed.
The deodorant cylinder 4 is a cylinder having a cylindrical portion having a substantially truncated cone shape, and the outer peripheral shape of the upper end in a plan view is an opening 2b of the casing portion 2a, and a portion between the ridge portion 2d and the step portion 2c. It has an elliptical shape having substantially the same shape as the inner peripheral surface of the above, and the lower end is formed in a circular shape that can be arranged in the water sealing portion 3 inside the plan view trap main body 2.
The outer peripheral surface of the upper end portion of the deodorizing cylinder 4 is provided with a mounting portion 4a that is detachably and watertightly attached to the opening 2b over the entire circumference. The mounting portion 4a will be described in detail. An annular packing PK made of an elastic material such as rubber is fixed over the entire circumference of the outer peripheral surface of the mounting portion 4a, and when the construction is completed, the annular packing PK is the opening 2b. The mounting portion 4a and the opening 2b are watertightly connected by watertightly contacting the contact portion of the inner peripheral surface between the ridge portion 2d and the step portion 2c. Since this connection is made between the inner peripheral surface of the opening 2b and the outer peripheral surface of the mounting portion 4a, stress is generated in the vertical direction simply by fitting the mounting portion 4a of the deodorizing cylinder 4 into the opening 2b. It can be connected without a lock mechanism or the like.
The sink N includes a top plate portion T provided with a sink S and a cabinet C provided with a storage / piping space inside for mounting and fixing the top plate portion T.
The top plate portion T is made of a flat plate-shaped stainless steel plate, and a sink S described below is provided in a part thereof.
The sink S is a box body having a rectangular shape in a plan view with an opening at the upper side, and is provided with a drainage port 1 substantially identical to the opening 2b of the trap body 2 on the bottom surface thereof along the side surface of the short side. .. The drainage port 1 is provided with a connecting piece S2 made of a tubular portion extending downward along the inner side surface of the opening, and the outer surface of the connecting piece S2 is the inner side surface of the opening 2b of the trap body 2. By fixing the trap main body 2 to the sink S after connecting the trap main body 2 above the ridge portion 2d of the above, the trap main body 2 can be connected to the drain port 1. The specific connection method, fixing method, and mechanism for that purpose will be omitted in the illustration and description.
The piping member P is composed of a straight pipe body or a pipe body bent substantially vertically, and connects from the discharge port 2e of the trap body 2 to the underfloor pipe provided below the floor surface and traps inside the pipe member P. It is configured so that the drainage from the discharge port 2e of the main body 2 can pass through.

The drain trap configured as described above is installed in the sink S of the sink N as follows. Although not described in detail, for each connection part such as the connection between the drainage port 1 and the opening 2b and the connection part of the pipe, the connection part may be screwed or screwed using an adhesive or packing as necessary. It is connected watertightly.
Further, in the construction procedure described below, the sink N is placed and fixed on the floor surface that can be connected to the underfloor piping on the sewage side with the sink S attached to the cabinet C before the construction. ..

First, the opening 2b of the trap body 2 is watertightly connected to the drain port 1 of the sink S. At the time of this connection, the outer surface of the connection piece S2 hanging from the drain port 1 of the sink S is connected to the inner surface of the opening 2b of the trap body 2 in a watertight manner via packing or the like. By fixing the trap body 2 to the sink S, the trap body 2 is connected to the drain port 1 with the opening 2b communicating with the drain port 1. At this time, the lower end of the connecting piece S2 abuts on the ridge portion 2d and is positioned and fixed in the height direction.
Next, the pipe member P connects the outlet 2e of the trap body 2 to the underfloor pipe. At this time, the piping member P is arranged along the inner side surface of the cabinet C of the sink N, and is piped so that the storage inside the cabinet C becomes suitable.
Next, the deodorant cylinder 4 is connected to the opening 2b of the sink S. The detachable and watertight connection between the opening 2b of the casing 2a and the deodorizing cylinder 4 is the inner peripheral surface of the opening 2b, to be exact, the portion between the ridge 2d and the step 2c of the opening 2b. The outer surface of the mounting portion 4a of the deodorizing cylinder 4 is strongly abutted inside and outside via the annular packing PK provided on the mounting portion 4a. When the annular packing PK is pressed up and down, the watertight connection is lost even if the deodorant cylinder 4 is slightly moved upward in the pulling direction of the deodorant cylinder 4, but the annular packing PK is inside and outside as in this embodiment. When it is pressed against the deodorant cylinder 4, it has nothing to do with the pulling direction of the deodorizing cylinder 4, so if the dimensions of the members are properly designed, the watertight connection will not be lost.
When connecting the deodorant cylinder 4, the deodorant cylinder 4 is attached to the upper surface of the step portion 2c of the opening 2b of the trap body 2 so that the lower end of the deodorant cylinder 4 is arranged in the water sealing portion 3. By pushing in until the lower ends of 4a come into contact with each other, positioning in the height direction is performed at the time of connection.
As described above, the construction of the drain trap on the sink N is completed.
As described above, the attachment portion 4a of the deodorant cylinder 4 is attached to the opening 2b and is watertightly connected. Therefore, the drain trap of this embodiment is a drain trap in which the deodorant cylinder 4 is attached to the opening 2b.

In the sink N, which is a drainage device configured as described above, when drainage is generated in the sink S, the drainage passes through the opening 2b and the deodorizing cylinder 4 from the drainage port 1 and collects in the water sealing portion 3. Then, it overflows from the upper end of the water sealing wall 3a and is discharged to the underfloor pipe connected to the sewage side via the pipe member P connected to the discharge port 2e. At this time, as described above, the drainage is accumulated in the water sealing portion 3 to seal the water, and the flow path from a part of the inside of the deodorizing cylinder 4 to the upper edge of the sealing wall 3a is filled with drainage. This makes it possible to prevent backflow of odors and pests from the sewage side to the indoor side.

When cleaning the inside of the trap body 2 in the drain trap, the deodorant cylinder 4 can be taken out upward from the opening 2b, and the inside of the trap body 2 can be cleaned from the drain port 1 and the opening 2b.
In this embodiment, the inner peripheral shape of the opening 2b of the casing portion 2a of the trap body 2 is substantially the same as the outer peripheral shape of the drain port 1 over the entire circumference, and the outer peripheral shape of the mounting portion 4a of the deodorizing cylinder 4 is The portion that is substantially the same as the inner peripheral shape of the opening 2b over the entire circumference and in which the casing 2a is hidden by the connecting piece S2 is the portion from the upper end of the opening 2b of the casing 2a to the protrusion 2d. be. The inner surface of the casing 2a is slightly inside by the step 2c, but has substantially the same shape as the inner surface of the drainage port 1. In this way, the flow path portion inside the casing portion 2a is configured so as to be substantially the same as the drainage port 1 in a plan view or inside the drainage port 1, so that the flow path portion inside the casing portion 2a can be formed. As shown in FIG. 5 in a plan view, almost the entire structure is exposed from the drainage port 1.
Therefore, all the parts inside the casing part 2a except the part hidden by the connection piece S2 can be visually recognized from the drain port 1 as shown in FIG. 5, and the cleaning operator can see the inside of the trap body 2. You can easily perform the cleaning work by putting your hands in the casing. The portion covered with the connection piece S2 inside the casing portion 2a is inside the casing portion 2a because drainage does not pass through because it is covered with the connection piece S2, but it is not a flow path portion. Further, since the upper end of the water-sealing wall 3a is arranged in the opening 2b in a plan view, a part of the downstream side of the water-sealing wall 3a is also arranged in the opening 2b, and is inside the trap body 2. , Cleaning of the downstream part of the sealing wall 3a becomes extremely easy. Further, it is easy to insert an instrument for cleaning the inside of the pipe body such as a high pressure washer from the discharge port 2e, and it is also easy to clean the piping member P or the like located on the downstream side of the drain trap.

Next, a second embodiment of the present invention will be described with reference to the drawings.
The drain trap of the second embodiment of the present invention shown in FIGS. 8 to 13 is composed of a trap main body 2 and a deodorizing cylinder 4 described below, and is attached to a sink S of a sink N and is a piping member. It is connected to the underfloor piping via P.
The trap body 2 has a substantially elliptical shape that is a non-circular shape in a plan view, has no portion that covers the upper part, and has a casing portion 2a having a drainage port 1 that also serves as an opening 2b with a completely open upper portion, and a casing portion. It is an outer wall surface of 2a, and includes a discharge port 2e for discharging drainage inside the casing portion 2a, which is provided on the lower surface near one end of the ellipse. Further, the upper edge of the drainage port 1 is provided with a flange portion 2f along the peripheral edge in the outer peripheral direction. Further, the drainage port 1 is provided with a step portion 2c, and when the construction is completed, the lower end of the mounting portion 4a of the deodorizing cylinder 4 abuts on the step portion 2c and is positioned and connected.
Inside the casing portion 2a, as shown in FIGS. 11 and 13, the inner side surface below the step portion 2c protrudes inward, so that a drainage flow path is integrally formed in the central portion in a groove shape. It becomes. More specifically, this groove-shaped portion will be formed in a substantially S-shape so as to reach the discharge port 2e from the end portion of the casing portion 2a opposite to the discharge port 2e of the side view trap main body 2. The bottom surface is formed.
The substantially S-shaped bottom surface starts with the opposite end of the discharge port 2e located on the upstream side, and the first inclined surface 5a that inclines downward toward the discharge port 2e side, upward. It is provided with three inclined surfaces, a second inclined surface 5b that is inclined and a third inclined surface 5c that is inclined downward again. At the downstream end of the third inclined surface 5c, the flow path is vertical, and the flow path again forms a tubular shape at this portion.
Further, in this embodiment, the chevron-shaped portion formed by the second inclined surface 5b and the third inclined surface 5c functions as the sealing wall 3a.
At this time, the area surrounded by the inner surface of the trap body 2 and the second inclined surface 5b side which is a part of the water sealing wall 3a functions as the "water sealing portion 3". Further, the upper end of the water sealing wall 3a is arranged in the drainage port 1 in a plan view as shown in FIG.
Further, the first inclined surface 5a has a shape that substantially matches the outer surfaces of the bowl-shaped portion 4b and the cylindrical portion 4c of the deodorizing cylinder 4 when the construction is completed.
Further, the upstream end portion of the second inclined surface 5b has a shape that matches and abuts on the lower end portion of the lower end of the cylindrical portion 4c of the deodorizing cylinder 4.
Further, on the second inclined surface 5b and the third inclined surface 5c, a lower flow path forming a semicircular cross-sectional view is continuous with the lower inner surface of the cylindrical portion 4c of the deodorizing cylinder 4 along the inclined surface. A groove 6 is formed.
The lower flow path groove 6 is provided with a continuous step portion 6a for abutting with the upper flow path groove 4d of the deodorizing cylinder 4, which will be described later. The continuous step portion 6a starts from a position at the lower end of the cylindrical portion 4c of the deodorizing cylinder 4 at the completion of construction, extends along the lower flow path groove 6, and the flow path near the discharge port 2e becomes cylindrical again. It ends with a part. The inner surface of the lower flow path groove 6 is continuous with the inner surface of the tubular portion near the discharge port 2e.
As described above, in a plan view, the inner surface of the casing portion 2a below the step portion 2c protrudes significantly inward from the drainage port 1 to form a groove-shaped drainage flow path. ing. In this way, the flow path portion inside the casing portion 2a is configured to be inside the drain port 1 in a plan view, so that the flow path portion inside the casing portion 2a is deodorized after the construction is completed. When the cylinder 4 is removed, almost the entire cylinder 4 is exposed from the drain port 1 in a plan view.
The deodorant cylinder 4 covers the entire circumference of a bottomed cylindrical bowl-shaped portion 4b having an open upper portion and a cylindrical portion 4c which is a cylindrical cylindrical portion inclined downward from the lower end portion of the bowl-shaped portion 4b. It is provided with a mounting portion 4a that is detachably and watertightly attached to the drain port 1 of the trap body 2 and a plate-shaped portion 4e that covers between the upper end of the mounting portion 4a and the upper end of the bowl-shaped portion 4b. The mounting portion 4a is provided with the same annular packing PK as in the first embodiment. Further, the deodorant cylinder 4 includes an upper flow path groove 4d which is continuous from the upper portion of the lower end of the cylindrical portion 4c and is described in detail below.
The upper flow path groove 4d is a guide structure having a groove portion that is concave upward and is configured to be paired with the lower flow path groove 6 of the trap body 2 described above, and is a lower surface thereof. Abuts on the continuous step portion 6a of the trap body 2 when the construction is completed. Further, when the construction of the upper flow path groove 4d is completed and the deodorizing cylinder 4 is attached to the drain port 1, the upper flow path groove 4d forms a tubular body shape that matches the lower flow path groove 6 and has a circular cross-sectional view. Due to the formed tube shape, the flow path from the bowl-shaped portion 4b of the deodorizing cylinder 4 to the discharge port 2e functions like an S-shaped trap, and the drainage performance is improved. In particular, in the present embodiment, the substantially S-shaped shape formed by the flow path from the bowl-shaped portion 4b of the deodorizing cylinder 4 to the discharge port 2e is a combination of a vertical pipe body and an inclined pipe body rather than a semi-arc that connects them. Since the drainage does not have to be inverted by 180 degrees at the folded portion of the flow path, the drainage is configured to flow more smoothly. In addition, the formed flow path is configured so that the inner diameter of the pipe body is slightly reduced toward the downstream side, the inside of the flow path becomes full, and the drainage speed increases due to negative pressure, which is called the siphon effect. It is easy to become.
The sink N includes a top plate portion T provided with a sink S and a cabinet C provided with a storage / piping space inside for mounting and fixing the top plate portion T.
The top plate portion T is made of a flat plate-shaped stainless steel plate, and a sink S described below is provided in a part thereof.
The sink S is a box body having a rectangular shape in a plan view with an opening at the upper side, and has substantially the same shape on the bottom surface along the side surface of the short side and on the outer surface near the step portion 2c of the drainage port 1 of the trap body 2. The trap body 2 is inserted into the mounting hole S1 from above, and the lower surface of the flange portion 2f is watertightly connected to the upper surface of the peripheral edge of the mounting hole S1 and fixed to the sink S. , The trap body 2 can be connected to the mounting hole S1. The specific connection method, fixing method, and mechanism for that purpose will be omitted in the illustration and description.
The piping member P is composed of a straight pipe body, connects from the discharge port 2e of the trap body 2 to the underfloor pipe provided below the floor surface, and drains water from the discharge port 2e of the trap body 2 inside the pipe member P. Is configured to allow passage.

The drain trap configured as described above is installed in the sink S of the sink N as follows. Although not described in detail, for each connection part such as the attachment of the drainage port 1 and the attachment hole S1 and the connection point of the pipe, the connection part may be screwed or screwed using an adhesive or packing as necessary. It is connected watertightly.
Further, in the construction procedure described below, the sink N is placed and fixed on the floor surface that can be connected to the underfloor piping on the sewage side with the sink S attached to the cabinet C before the construction. ..

First, the trap main body 2 is inserted from above the mounting hole S1, the lower surface of the flange portion 2f is made to come into contact with the upper peripheral surface of the mounting hole S1 through packing or the like, and then the trap main body 2 is used as the sink S. Install and fix watertightly.
Next, the outlet 2e of the trap body 2 to the underfloor pipe are connected by a pipe member P made of a linear pipe body.
Next, the deodorant cylinder 4 is connected to the drain port 1 of the trap body 2. The detachable and watertight connection between the drain port 1 of the trap body 2 and the deodorant cylinder 4 is such that the inner surface of the drain port 1 of the trap body 2 and the outer surface of the mounting portion 4a of the deodorant cylinder 4 are the mounting portions. It is performed by strongly abutting inside and outside through the annular packing PK provided in 4a.
When the annular packing PK is pressed up and down, the watertight connection is lost even if the deodorant cylinder 4 is slightly moved upward in the pulling direction of the deodorant cylinder 4, but the annular packing PK is inside and outside as in this embodiment. When it is pressed against the deodorant cylinder 4, it has nothing to do with the pulling direction of the deodorizing cylinder 4, so if the dimensions of the members are properly designed, the watertight connection will not be lost.
Further, when connecting the deodorant cylinder 4, the deodorant cylinder 4 is placed on the upper surface of the step portion 2c of the drain port 1 of the trap body 2 so that the lower end of the deodorant cylinder 4 is arranged in the water sealing portion 3. By pushing in until the lower end of the mounting portion 4a comes into contact, positioning in the height direction is performed at the time of connection.
When the deodorant cylinder 4 is connected to the trap main body 2 in this way, the first inclined surface 5a and a part of the bowl-shaped portion 4b and the cylindrical portion 4c of the deodorant cylinder 4 are in contact with each other.
Further, the upper flow path groove 4d matches the lower flow path groove 6 to form a tubular body shape having a circular cross-sectional view. Due to the formed tube shape, the flow path from the bowl-shaped portion 4b of the deodorizing cylinder 4 to the discharge port 2e is formed in a shape like an S-shaped trap. That is, the upper flow path groove 4d and the lower flow path groove 6 are configured to form a flow path of the tubular body continuous from the lower end of the cylindrical portion 4c, and the flow path of the tubular body continuous from the lower end of the cylindrical portion 4c. Is formed by an upper flow path groove 4d and a lower flow path groove 6 divided along the flow path. Further, the lower flow path groove 6 which is a part of the member forming the flow path is integrally formed with the trap main body 2.
As described above, the construction of the drain trap on the sink N is completed.
As described above, the attachment portion 4a of the deodorant cylinder 4 is attached to the drain port 1 and is watertightly connected. Therefore, the drain trap of this embodiment is a drain trap in which the deodorant cylinder 4 is attached to the drain port 1.

In the sink N, which is a drainage device configured as described above, when drainage is generated in the sink S, the drainage is discharged from the drainage port 1 to the plate-shaped portion 4e and the bowl-shaped portion 4b of the deodorizing cylinder 4 in the drainage port 1. It passes through the cylindrical portion 4c, further passes through the flow path formed by the upper flow path groove 4d and the lower flow path groove 6, exceeds the upper end of the water sealing wall 3a, and passes through the piping member P connected to the drain port 2e. It is discharged to the underfloor pipe connected to the sewage side.
The drainage flow path in the drainage trap is turbulent like an S-shaped trap due to the flow path formed by the cylindrical portion 4c of the deodorizing cylinder 4, the upper flow path groove 4d, and the lower flow path groove 6. Since it flows smoothly without any problems, good drainage performance can be ensured.
Further, as described above, in the present embodiment, the substantially S-shaped shape formed by the flow path from the bowl-shaped portion 4b of the deodorizing cylinder 4 to the discharge port 2e is a shape in which inclined pipe bodies are combined and spread horizontally. Since the flow of drainage does not reverse 180 degrees, the drainage flows more smoothly, and the inner diameter of the pipe is slightly reduced toward the downstream side, which increases the speed of drainage due to negative pressure, which is called the siphon effect. It is easy to get into a state.
Further, at the time of this drainage, the drainage is accumulated in the water sealing portion 3 and becomes a sealing water, and the flow path from a part of the inside of the deodorizing cylinder 4 to the upper edge of the sealing wall 3a is filled with the drainage. Therefore, it is possible to prevent backflow of odors and pests from the sewage side to the indoor side.
The trap function of the drain trap in the present embodiment to prevent the backflow of odors and pests is such that the sealing water is collected in the water sealing portion 3 so that the sealing wall 3a is formed from the inside of the cylindrical portion 4c of the deodorizing cylinder 4. It is derived from the fact that a full part is generated in the flow path to the upper end.
In this embodiment, the contact portions of the upper flow path groove 4d and the lower flow path groove 6 are merely in contact with each other and are not watertightly connected. Therefore, the upper flow path groove 4d and the lower flow path are not connected. The flow path formed by the path groove 6 prevents turbulent flow of drainage like an S-shaped trap and functions as a drainage guide for smooth drainage, but the upper flow path groove 4d and the lower flow path groove Since the seam portion of No. 6 is not watertight, it does not function as an S-type trap. The drain trap of this embodiment is classified as a running type drain as in Patent Document 2, in which the lower end of the cylinder portion of the deodorant cylinder 4 is arranged in the water sealing portion 3 to generate a trap function. It's a trap.

When cleaning the inside of the trap body 2 in the above drain trap, the deodorant cylinder 4 can be taken out upward from the drain port 1 and the inside of the trap body 2 can be cleaned from the drain port 1 and the opening 2b.
In this embodiment, by removing the deodorant cylinder 4, the entire inside of the casing portion 2a can be visually recognized from the opening 2b in a plan view, and the entire inside of the casing portion 2a becomes a shadow and cannot be seen. It is configured so that there are no parts.
Therefore, all the parts inside the casing portion 2a can be visually recognized from the drain port 1, and the cleaning operator can easily put his / her hand inside the trap main body 2 to perform the cleaning work. Further, since the upper end of the water-sealing wall 3a is arranged in the plan view opening 2b, a part of the downstream side of the water-sealing wall 3a is also arranged in the opening 2b, and the trap body 2 has a portion. Cleaning of the downstream portion of the sealing wall 3a becomes extremely easy. Further, it is easy to insert an instrument for cleaning the inside of the pipe body such as a high pressure washer from the discharge port 2e, and it is also easy to clean the piping member P or the like on the downstream side of the drain trap.

When cleaning the inside of the trap body 2 in the above drain trap, the deodorant cylinder 4 can be taken out upward from the drain port 1 and the inside of the trap body 2 can be cleaned from the drain port 1.
In this embodiment, the inner surface shape of the casing portion 2a of the trap body 2 below the step portion 2c protrudes significantly inward from the drain port 1 in a plan view, and forms a groove-shaped drainage flow path. It has a formed structure. In this way, by configuring the flow path portion inside the casing portion 2a so as to be inside the drain port 1 in a plan view, the flow path portion inside the casing portion 2a is viewed in a plan view, and almost the entire flow path portion is drained. The structure is such that it is exposed from the mouth 1.
Therefore, all the parts inside the casing portion 2a can be visually recognized from the drain port 1, and the cleaning operator can easily put his / her hand inside the trap main body 2 to perform the cleaning work. Further, since the upper end of the water-sealing wall 3a is arranged in the plan view opening 2b, a part of the downstream side of the water-sealing wall 3a is also arranged in the opening 2b, and the trap body 2 has a portion. Cleaning of the downstream portion of the sealing wall 3a becomes extremely easy. Further, it is easy to insert a device for cleaning the inside of the pipe body such as a high pressure washer from the discharge port 2e, and it is easy to clean the downstream side of the drain trap.

Examples of the present invention are as described above, but the present invention is not limited to the above-mentioned examples, and can be freely changed without changing the gist.
For example, in the above embodiment, the sink N provided with the sink S is used as the drainage device, but the present invention is not limited to the above embodiment, and the wash basin provided with the wash basin, the bathtub, the bathroom, and the like. It may be used for any drainage device such as a waterproof pan for a washing machine and a drainage port 1 on the floor where water may flow.

Further, in the second embodiment, the structure is such that the upper flow path groove 4d and the lower flow path groove 6 are simply in contact with each other, and water leakage or ventilation leakage may occur from the seam. The structure is not limited to the above embodiment, and a structure may be provided in which packing is provided at the seam portion to enhance watertightness. However, at the time of construction, the joint between the upper flow path groove 4d and the lower flow path groove 6 is covered with the plate-shaped portion 4e of the deodorizing cylinder 4 and is invisible, so that watertight contact can be reliably performed. Since it is not possible to confirm that the seam is used, it is assumed that water leakage or ventilation leakage may occur at the seam portion, and as in the second embodiment, the deodorant cylinder 4 and the water sealing wall 3a are used as a running trap. It should be configured to ensure the trap function.

Further, in the above embodiment, the method of connecting the drainage port 1 or the opening 2b and the mounting portion 4a of the deodorizing cylinder 4 pushes the drainage port 1 or the opening 2b and the mounting portion 4a inward and outward via the annular packing PK. The connection is made by hitting it, but if a watertight connection can be made reliably, for example, a structure in which the deodorant cylinder 4 is pressed against the drain port 1 or the opening 2b from above to fix it. It does not matter if it has a simple structure.

Further, in the second embodiment, the casing portion 2a is covered with the deodorizing cylinder 4 when the construction is completed. Therefore, when the construction is completed, the user does not visually check the inside of the casing portion 2a, and the design is excellent.

1 Drainage port 2 Trap body 2a Casing part 2b Opening part 2c Step part 2d Protrusion part 2e Discharge port 2f Flange part 3 Water sealing part 3a Water sealing wall 4 Deodorant cylinder 4a Mounting part 4b Bowl-shaped part 4c Cylindrical part 4d Upper flow path Groove 4e Plate-shaped part 5a First inclined surface 5b Second inclined surface 5c Third inclined surface 6 Lower flow path groove 6a Continuous stage part C Cabinet N Sink P Piping member PK Circular packing S Sink S1 Mounting hole S2 Connection One-sided T top plate

Claims (7)

The drainage port provided in the drainage equipment and
A trap body consisting of a casing in which drainage from the drainage port flows in and a drainage port in which drainage inside the casing is discharged.
It has a detachable and watertight mounting part inside the drainage port or casing part, the lower part is a tubular body arranged inside the trap body, and the outer peripheral edge of the mounting part is a non-circular deodorizing cylinder.
It consists of a water sealing wall provided inside the trap body, which is placed between the lower end of the cylinder part of the deodorizing cylinder and the discharge port to form a water seal.
With the deodorant cylinder removed, the entire flow path inside the casing is configured so that it is substantially the same as the drainage port in plan view or is inside the drainage port, so that almost the entire flow path is inside the drainage port. A drain trap characterized by being configured to be exposed from. The drainage port provided in the drainage equipment and
A trap body consisting of a casing in which drainage from the drainage port flows in and a drainage port in which drainage inside the casing is discharged.
It has a detachable and watertight mounting part inside the drainage port or casing part, and the lower part is a deodorant cylinder which is a tubular body arranged inside the trap body.
It is arranged between the lower end of the cylinder portion of the deodorant cylinder and the discharge port provided inside the trap body, is configured to reach the inner surface of the casing portion, and consists of a water sealing wall forming a water seal.
With the deodorant cylinder removed, the entire flow path inside the casing is configured so that it is substantially the same as the drainage port in plan view or is inside the drainage port, so that almost the entire flow path is inside the drainage port. A drain trap characterized by being configured to be exposed from. The drain trap according to claim 2, wherein the outer peripheral edge of the mounting portion of the deodorizing cylinder has a non-circular shape in a plan view. In the above drain trap, the watertight structure at the attachment portion of the deodorizing cylinder to the drain port or the opening is provided between the outer surface of the mounting portion of the deodorizing cylinder and the contact point of the drain port or the opening. The drain trap according to any one of claims 1 to 3, wherein the packing is watertightly abutted in the direction. The drain trap according to any one of claims 1 to 4, wherein the upper end of the sealing wall is formed in the opening in the water trap. In the above drain trap, a flow path of the pipe body continuous from the lower end of the cylinder portion is formed on the downstream side of the lower end of the cylinder portion of the deodorant cylinder, and the flow path of the pipe body continuous from the lower end of the cylinder portion is formed. The drain trap according to any one of claims 1 to 5, wherein the trap is divided and formed along a flow path. The sixth aspect of the above-mentioned drain trap, wherein one of the members forming the flow path of the pipe body divided and formed along the flow path is integrally formed with the trap main body. Drain trap.

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