JP2017115563A - Drain trap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain trap which prevents bubbles in wastewater from being mixed into the side of an auxiliary drain passage, the overall height of which is set lower, which achieves space saving, and which enables an arbitrary setting of a connection point between the auxiliary drain passage and the trap part.SOLUTION: A branch pipe 3, to which an auxiliary drain passage 5 except a main drain passage 4 is connected, is communication-connected to the inside of a trap part 2 from a lateral direction of the trap part 2. A height position of an upper end of the branch pipe 3 is located above a lower end of the trap part 2, and the branch pipe 3 is connected in an axially-rotatable manner to the trap part 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drain trap having a sealed water inside, which is provided in a drain pipe for draining drainage drained from drains such as kitchens, bathtubs, and washstands into sewage.

The drain trap of this conventional example is used for a wash bowl used for a wash basin. The tank body, drain port, overflow port, main drain path, drain pipe, trap part, sub-port, which are described below, are used. And a drainage path.
The tank body is a box body, and a drain port described later is opened at the bottom, and an overflow port configured to prevent overflow of water stored in the tank body is opened on the side surface.
The drain port is opened at the bottom of the tank body, and a drain pipe is connected downstream thereof. The drainage in the tank is discharged from the drainage outlet to the outside of the tank, and drained to the trap part and the drainage pipe through the drainage pipe.
The overflow port is an opening that is arranged on the side surface of the tank body so that the water stored in the tank body does not overflow from the upper edge of the tank body. A tubular overflow pipe is connected to the overflow port, and the lower end of the overflow pipe is connected to a branch pipe of the main drainage path described later, so that drainage from the overflow port passes through the overflow pipe and the main drainage path. And drained into the trap. And the overflow waste_water | drain drained in the trap part is discharged | emitted from an outflow port outside a trap part, and is finally drained to a sewer pipe through a drain pipe.
The drainage pipe has one end connected to the drainage outlet of the tank body and the other end connected to the inlet of the trap portion disposed downstream. In this conventional example, this drainage path is a main drainage path. A branch pipe, which will be described later, is formed in the drain pipe that is the main drain path, and the drainage of the sub drain path flows into the drain pipe of the main drain path.
The drain pipe is a tubular member having one end connected to the outlet of the trap portion and the other end connected to the sewer pipe. Therefore, a trap part will be arrange | positioned in the middle position of a drain pipe.
Although not shown, the trap part is a drainage trap made of a U-shaped tube when viewed from the side. The trap part includes an inlet, an outlet, a sealing lower limit wall, a sealing upper limit wall, a sealing part, It is composed of a branch pipe, the upstream is connected to the drain pipe of the main drainage path, and the downstream is connected to the drain pipe connected to the sewer pipe.
The inflow port is located at the uppermost stream of the trap part and is configured to drain the waste water from the drain port. The drainage generated in the tank flows into the trap part through the drain port and drain pipe, that is, the main drainage channel. It is an opening to do. In this conventional example, it is a cylindrical tubular body continuously formed from the inflow port to the outflow port, and is configured by bending the tubular body in a U shape in a sectional view.
The outflow port is an opening that is configured on the most downstream side of the trap portion and discharges the waste water inside the trap portion to the outside of the trap portion. Therefore, since the drain pipe is connected downstream, the drainage inside the trap portion is drained from the outlet to the drain pipe.
The sealing water lower limit wall is a wall configured by continuously drooping from the inflow port and bending the tubular body, and in the conventional example, continuously from the inflow port, and constitutes the lowermost end of the sealing portion described later. It is a wall part to do. In addition, the drainage channel for drainage to pass between the lower end of the said sealing lower limit wall and the trap part bottom wall is comprised.
The sealed water upper limit wall is a wall configured to rise continuously from the sealed water lower limit wall and the sealed water bottom wall toward the outlet. Moreover, it is a wall part for comprising the uppermost end of the sealing part mentioned later.
The sealed water part is a member configured to prevent odors and pests from the sewage from flowing backward into the indoor side by storing a part of the drainage in the trap part, and the above-described sealed water upper limit wall and sealed water lower limit Consists of walls. It is a drainage part which stores drainage water in the trap part and is stored from the lowermost end of the sealing lower limit wall to the uppermost end of the sealing upper limit wall. Since the drainage is stored, odors and pests from the sewer pipe do not flow back into the room. Moreover, the location corresponding to the sealed water portion is a drainage portion storing water from the lower end of the sealed lower limit wall to the upper end of the sealed upper limit wall.
The branch pipe is a member for draining the drainage of the auxiliary drainage path to the drainage pipe that is the main drainage path, and is connected to the lower end of the overflow pipe, that is, the lower end of the auxiliary drainage path.
The main drainage path is a drainage path that drains from the drainage port of the tank body to the inflow port, and is a path that reaches the inflow port of the trap part through the drainage port of the tank body and the drainage pipe.
The sub-drainage path is a drainage path that drains from an overflow port that opens to the side surface of the tank body, and is a path that reaches the branch pipe of the trap portion via the overflow port and overflow pipe of the tank body. (See Patent Document 1)

The drain trap of this conventional example is used for a sink used in the kitchen, and is described below. The tank body, the drain port, the overflow port, the main drain channel, the drain pipe, the trap unit, and the sub drain channel. And.
The tank body is a box made of a thin metal plate, and a drain port described later is opened at the bottom, and an overflow port configured to prevent the water stored in the tank from overflowing is opened on the side surface. Yes.
The drain port is opened at the bottom of the tank body, and a trap portion is connected downstream thereof. The drainage in the tank is discharged from the drainage outlet to the outside of the tank and drained to the drainage pipe through the trap part.
The overflow port is an opening that is arranged on the side surface of the tank body so that the water stored in the tank body does not overflow from the upper edge of the tank body. A tubular overflow pipe is connected to the overflow port, and the lower end of the overflow pipe is connected to a branch pipe of the trap unit, which will be described later, so that the drainage from the overflow port flows into the trap unit via the overflow tube. Drained. And the overflow waste_water | drain drained in the trap part is discharged | emitted from an outflow port outside a trap part, and is finally drained to a sewer pipe through a drain pipe.
The drain pipe is a tubular member having one end connected to the outlet of the trap portion and the other end connected to the sewer pipe.
The trap part is an Owan-shaped box, and is composed of an inlet, an outlet, a sealing lower limit wall, a sealing upper limit wall, a sealing part, and a branch pipe, and upstream is a tank body. A drain pipe is connected downstream.
The inflow port is an opening through which the waste water generated in the tank flows into the trap portion through the drain port, and is configured to communicate with the drain port located at the uppermost stream of the trap unit. In this conventional example, a cylindrical drain tube is formed at the inlet portion. The drain tube is attached to the drain port so that the user can attach and detach the drain tube appropriately from the drain port.
The outflow port is an opening that is configured on the most downstream side of the trap portion and discharges the waste water inside the trap portion to the outside of the trap portion. In the present embodiment, since the drain pipe is connected downstream of the outlet, the drainage inside the trap portion is drained to the drain pipe as it is.
The sealing water lower limit wall is a wall configured to hang down from the inflow port, and in this conventional example, the sealing water lower limit wall is configured from a cylindrical drain tube that is detachably attached to the inflow port or the drain port. It is a wall part for comprising the lowest end of. In addition, the drainage channel for drainage to pass between the lower end of the said sealing lower limit wall and the trap part bottom wall is comprised.
The sealing water upper limit wall is a wall configured to rise from the sealing wall bottom wall to the outlet, and in this conventional example, is the uppermost end of the Owan-shaped member of the trap part, It is a wall part for comprising the uppermost end.
The sealed water part is a member configured to prevent odors and pests from the sewage from flowing backward into the indoor side by storing a part of the drainage in the trap part, and the above-described sealed water upper limit wall and sealed water lower limit Consists of walls. It is a drainage part which stores drainage water in the trap part and is stored from the lowermost end of the sealing lower limit wall to the uppermost end of the sealing upper limit wall. Since the drainage is stored, odors and pests from the sewer pipe do not flow back into the room. Moreover, the location corresponding to the sealed water portion is a drainage portion storing water from the lower end of the sealed lower limit wall to the upper end of the sealed upper limit wall.
The branch pipe is an opening opened on the bottom surface of the trap portion, and is connected to an overflow pipe connected to the overflow port, that is, a sub drainage path. The uppermost end of the branch pipe is located at a position lower than the lowermost lower end of the trap part.
The main drainage path is a drainage path that drains from the drainage port of the tank body, and is a path that reaches the inflow port of the trap part through the drainage port of the tank body.
The sub-drainage path is a drainage path for drainage discharged from an overflow port opened on the side surface of the tank body, and is a path that reaches the branch pipe of the trap portion through the overflow port and the overflow pipe of the tank body. (See Patent Document 2)

The drain trap of this conventional example is used for a wash bowl used for a wash basin. The tank body, drain port, overflow port, main drain path, drain pipe, trap part, sub-port, which are described below, are used. And a drainage path.
The tank body is a box body, and a drain port described later is opened at the bottom, and an overflow port configured to prevent overflow of water stored in the tank body is opened on the side surface.
The drain port is opened at the bottom of the tank body, and a drain pipe is connected downstream thereof. The drainage in the tank is discharged from the drainage outlet to the outside of the tank, and drained to the trap part and the drainage pipe through the drainage pipe.
The overflow port is an opening that is arranged on the side surface of the tank body so that the water stored in the tank body does not overflow from the upper edge of the tank body. A tubular overflow pipe is connected to the overflow port, and the lower end of the overflow pipe is connected to a branch pipe of the trap unit, which will be described later, so that the drainage from the overflow port flows into the trap unit via the overflow tube. Drained. And the overflow waste_water | drain drained in the trap part is discharged | emitted from an outflow port outside a trap part, and is finally drained to a sewer pipe through a drain pipe.
The drainage pipe has one end connected to the drainage outlet of the tank body and the other end connected to the inlet of the trap portion disposed downstream. In this conventional example, this drainage path is a main drainage path. The drain pipe is a tubular member having one end connected to the outlet of the trap portion and the other end connected to the sewer pipe. Therefore, a trap part will be arrange | positioned in the middle position of a drain pipe.
The trap part is a box of two parts, upper and lower parts, and the upper and lower parts are fixedly connected in a watertight manner with screws or screws. The trap part is composed of an inlet, an outlet, a sealing lower limit wall, a sealing upper limit wall, a sealing part, and a branch pipe, and the upstream is connected to the drain pipe of the main drainage path. Downstream, a drain pipe connected to the sewer pipe is connected.
The inflow port is located at the uppermost stream of the trap part and is configured to drain the waste water from the drain port. The drainage generated in the tank flows into the trap part through the drain port and drain pipe, that is, the main drainage channel. It is an opening to do. In this conventional example, a cylindrical shape is formed by hanging down from an inflow port in a tubular shape. Moreover, in this prior art example, a cylindrical wall is continuously suspended from the inflow port to constitute a sealing water lower limit wall to be described later.
The outflow port is an opening that is configured on the most downstream side of the trap portion and discharges the waste water inside the trap portion to the outside of the trap portion. Therefore, since the drain pipe is connected downstream, the drainage inside the trap portion is drained from the outlet to the drain pipe. Moreover, in this conventional example, the sealing water upper limit wall mentioned later is hanged upward continuously.
The sealing water lower limit wall is a cylindrical wall configured to hang down integrally and continuously from the inflow port. In this conventional example, the bottom wall of the sealing portion described later is formed continuously from the inflow port. It is a wall part to do. In addition, the drainage channel for drainage to pass between the lower end of the said sealing lower limit wall and the trap part bottom wall is comprised.
The sealing water upper limit wall is a wall configured to rise from the sealing unit bottom wall toward the outflow port, and is a member configured to hang upward from the trap unit outflow port in this conventional example. Moreover, it is a wall part for comprising the uppermost end of the sealing part mentioned later.
The sealed water part is a member configured to prevent odors and pests from the sewage from flowing backward into the indoor side by storing a part of the drainage in the trap part, and the above-described sealed water upper limit wall and sealed water lower limit Consists of walls. It is a drainage part which stores drainage water in the trap part and is stored from the lowermost end of the sealing lower limit wall to the uppermost end of the sealing upper limit wall. Since the drainage is stored, odors and pests from the sewer pipe do not flow back into the room. Moreover, the location corresponding to the sealed water portion is a drainage portion storing water from the lower end of the sealed lower limit wall to the upper end of the sealed upper limit wall.
The branch pipe is an opening that opens to the side of the inlet of the trap portion, and is connected to the overflow pipe, that is, the sub-drainage path. Note that the branch pipe to which the auxiliary drainage path is connected is configured in the upper part of the trap portion.
The main drainage path is a drainage path that drains from the drainage port of the tank body to the inflow port, and is a path from the drainage port of the tank body and the drain pipe to the inflow port of the trap part.
The sub-drainage path is a drainage path that drains from an overflow port that opens to the side surface of the tank body, and is a path that reaches the branch pipe of the trap portion via the overflow port and overflow pipe of the tank body. (See Patent Document 3)

Utility model registration No. 2568052 JP 2011-94304 A JP 2010-037924 A

The conventional drainage trap has the following problems.
As a problem of conventional overflow piping, bubbles are generated when detergent or chemicals are mixed in the drainage. However, since the bubbles in the drainage are created by the surface tension of the liquid that encloses the gas, the specific gravity is drained. It is lighter and will remain in the pipe after draining. Therefore, when bubbles are mixed in the drainage, the bubbles remain in the auxiliary drainage path that is the overflow pipe. Each time the bubbles are repeatedly drained, the water level of only the bubbles rises in the overflow pipe, resulting in a situation where the bubbles flow backward from the overflow port. Thus, if bubbles flow backward from the overflow port, the cleanly cleaned tank body is contaminated with the flowed bubbles, which is very uncomfortable for the user. Moreover, since the inside of an overflow pipe cannot be put in by a general user, it cannot be cleaned. If bubbles are constantly stored, dirt such as mold and slime adheres to the overflow pipe, but cleaning is not possible, which increases discomfort for the user and causes odor due to dirt in the overflow pipe. It has occurred.
Further, when a normal drain trap is used in a washstand or a kitchen, it often becomes a storage space under the tank body, and space saving of the drain trap itself is required as a problem. Moreover, regarding the drain trap used in the bathroom, it is required to reduce the height of the piping space under the floor. However, since the height of the sealed portion of the drain trap is regulated by the standard, the height of the sealed portion is required at the same time, while at least the height of the sealed portion is required. .
In addition, there are very many drain traps that use the sub drainage path separately from the main drain path, but the positional relationship between the overflow port and the drain port in the tank and the positional relationship between both the main drain channel and the sub drain channel. The position where the auxiliary drainage path flows into the trap portion is various. For example, if the inflow location to the trap part of the auxiliary drainage path is fixed, the connection position between the outlet of the trap part and the drainage pipe and the connection position of the drainage pipe and the inlet of the main drainage path are limited. Therefore, conventionally, it is necessary to set the piping conditions in consideration of the piping direction in advance. Moreover, even when designing, the position of each inlet of the drain trap is limited, so that the design is complicated and much labor is required.

In the drain trap in Patent Document 1, since the main drain pipe path and the sub drain pipe path are connected to each other through the drain pipe, the bubbles in the drainage easily flow back into the overflow pipe, which is the sub drain path, and are stored. Bubbles easily flowed back from the overflow port.

Moreover, in the drainage trap in patent document 2, the branch pipe for flowing the waste_water | drain from a subdrain path into the inside of a trap part is comprised by opening to the bottom face of a trap part, and the upper end of a branch pipe is from a trap part bottom wall. It is configured in the lower part (lower part). When the drain trap having such a configuration is adopted, the total height of the drain trap is increased by the height of the auxiliary drain path. Therefore, the height of the drainage trap requires a height corresponding to the auxiliary drainage path, which is higher than the conventional drainage trap. Therefore, the problem of saving storage space and piping space cannot be solved.

Moreover, in the drainage trap in Patent Document 3, although the auxiliary drainage path is connected to the side of the trap part, the connection between the upper part of the trap part and the lower part is a screw or screw connection, so that it can be aligned in the field. First, detailed piping conditions had to be set from the design time, which was very inconvenient.

From the above, the present invention solves the following problems.
1. Foam in the drainage does not enter the secondary drainage channel.
2. Lower the overall height of the drain trap to achieve space saving.
3. The connection point between the auxiliary drainage channel and the trap part can be set arbitrarily.

The drainage trap according to claim 1 includes a trap part 2 that forms a sealing part 21 inside, an inlet 22 into which drainage from a main drainage path 4 configured in the trap part 2 flows, and an inside of the trap part 2 The wall 23 is configured to be suspended from the outlet 23 from which the wastewater is discharged to the outside and the inlet 22 of the trap part 2, and a drainage flow path 26 is provided between the lower end of the wall and the bottom wall of the trap part 2. The upper limit of the sealed portion 21 is formed by being formed upright from the bottom wall 24 of the sealed portion 21 toward the outlet 23 and forming the lower limit of the sealed portion 21. In a drain trap constituted by a sealing water upper limit wall 25, a sealing water lower limit wall 24 and a sealing water portion 21 formed by the sealing water upper limit wall 25, a sub drainage path 5 other than the main drainage path 4 is connected. The branch pipe 3 is connected to the inside of the trap portion 2 from the side surface direction of the trap portion 2. The drainage trap is characterized in that the branch pipe 3 is connected so that the height position of the upper end of the branch pipe 3 is located above the lower end of the trap section 2 and the branch pipe 3 is connected to the trap section 2 so as to be axially rotatable. .

The drain trap according to claim 2 is the drain trap according to paragraph 0011, wherein the height position of the upper end of the branch pipe 3 is positioned above the sealing lower limit wall 24.

The drainage trap according to claim 3, wherein the height position of the upper end of the branch pipe 3 is located below the sealing lower limit wall 24 and above the lower end of the trap portion 2. The drain trap according to paragraph 0011.

The drainage trap according to claim 4, wherein the branch pipe 3 is connected to the downstream side of the sealing water lower limit wall 24 and to the upstream side of the sealing water upper limit wall 25. It is a drain trap according to any one of paragraphs 0011 to paragraph 0013.

The drain trap according to claim 5, wherein the branch pipe 3 is connected to the upstream side of the sealing water lower limit wall 24 and to the upper surface of the sealing surface. The drain trap according to any one of paragraphs 0013.

The drain trap according to claim 6 is capable of storing drainage therein, and includes a tank body 1 including a box body having a drain port 11 at the bottom and an overflow port 12 at a side surface, The trap section 2 is connected downstream of the overflow port 12, the drainage route of the drainage discharged from the drainage port 11 is the main drainage route 4, and the drainage route of the drainage discharged from the overflow port 12 is the sub-drainage route 5. The drainage trap according to any one of paragraphs 0011 to 0015, characterized in that

According to the first to fifth aspects of the present invention, the branch pipe 3 to which the auxiliary drainage path 5 other than the main drainage path 4 is connected is connected to the inside of the trap part 2 from the side of the trap part 2. For this reason, even if bubbles are mixed in the drainage, the branch pipe 3 is always sealed by the sealing water of the sealing portion 21, and the bubbles do not flow backward to the auxiliary drainage path 5.
In addition, since the height position of the upper end 31 of the branch pipe 3 is positioned above the lower end of the trap portion 2, the total height can be lowered by the height (pipe diameter) of the sub-drainage path 5.
Further, since the branch pipe 3 is connected to the trap portion 2 so as to be axially rotatable, the connecting portion between the auxiliary drainage path 5 and the trap portion 2 can be arbitrarily set on the axial rotation. Since the tube 3 can be easily positioned by rotating the shaft 3 with respect to the trap portion 2, it can be easily installed and installed.
The present invention according to claim 6 is provided with a tank body 1 that can store drainage water therein and has a box body that opens a drainage port 11 at a bottom portion and an overflow port 12 at a side surface. The trap section 2 is connected downstream of the overflow port 12, the drainage route of the drainage discharged from the drainage port 11 is the main drainage route 4, and the drainage route of the drainage discharged from the overflow port 12 is the sub-drainage route 5. Therefore, the bubbles in the drainage can be prevented from flowing backward from the overflow port 12. Moreover, the storage space under the tank body 1 can be taken large.

It is sectional drawing at the time of constructing the drain trap which shows 1st Example of this invention in a tank. It is sectional drawing to which the drain trap part of 1st Example of this invention was expanded. It is sectional drawing and the exploded perspective view of the drain trap part of 1st Example of this invention. It is a section perspective view of the drain trap part of the 1st example of the present invention. It is A-A 'sectional drawing in FIG. It is sectional drawing at the time of constructing the drain trap which shows 2nd Example of invention in a tank body. It is sectional drawing to which the drain trap part of 2nd Example of this invention was expanded. It is sectional drawing and the exploded perspective view of the drain trap part of 2nd Example of this invention. It is a section perspective view of the drain trap part of the 1st example of the present invention. It is a perspective view which shows the other Example. It is a perspective view of the upper part of the Example in FIG. It is a disassembled perspective view which shows the other Example. It is a cross-sectional perspective view which shows other Examples.

The drain trap of the present embodiment is used in a wash bowl used for a wash basin, and as described in FIGS. 1 to 5, a tank body 1, a drain port 11, an overflow port 12, and The main drain path 4, the drain pipe 41, the trap portion 2, and the sub drain path 5 are configured.
The tank body 1 is a box body, and a drain port 11 (described later) is opened at the bottom, and an overflow port 12 configured to prevent the water stored in the tank body 1 from overflowing on the side surface.
The drain port 11 is opened at the bottom of the tank body 1, and a drain pipe 41 is connected downstream thereof. The drainage in the tank body 1 is discharged from the drainage port 11 to the outside of the tank body 1 and drained to the trap portion 2 and the drainage pipe 8 through the drainage pipe 41.
The overflow port 12 is an opening that is disposed on the side surface of the tank body 1 so that the water stored in the tank body 1 does not overflow from the upper edge of the tank body 1. A tubular overflow pipe 51 is connected to the overflow port 12, and the lower end of the overflow pipe 51 is connected to a branch pipe 3 of the trap unit 2 described later. Then, the water is drained into the trap portion 2. Then, the overflow drainage drained into the trap part 2 is discharged from the outlet 23 to the outside of the trap part 2 and finally drained to the sewer pipe through the drain pipe 8.
The drain pipe 41 has one end connected to the drain port 11 of the tank body 1 and the other end connected to the inflow port 22 of the trap unit 2 disposed downstream. As will be described later, in this embodiment, this drainage path is referred to as a main drainage path 4. Further, the drain pipe 8 is a tubular member having one end connected to the outlet 23 of the trap portion 2 and the other end connected to the sewer pipe. Therefore, the trap part 2 will be arrange | positioned in the middle position of a drain pipe.
The trap part 2 is a drainage trap composed of a Y-shaped tube when viewed from the side. The trap part 2 includes an inlet 22, an outlet 23, a sealing lower limit wall 24, a sealing upper limit wall 25, and a sealing part. 21, the branch pipe 3, and the connection portion 6, the upstream is connected to the drain pipe 41 of the main drainage path 4, and the downstream is connected to the drain pipe 8 connected to the sewer pipe. In addition, the bottom portion of the trap portion 2 is configured by opening the bottom portion because a later-described branch pipe 3 is connected thereto.
The inflow port 22 is located at the uppermost stream of the trap portion 2 and is configured to drain the drainage from the drainage port 11. The drainage generated in the tank body 1 is drainage port 11 and the drainage pipe 41, that is, the main drainage path 4. This is an opening for flowing into the trap portion 2 through the. In the present embodiment, the cylindrical tube is continuously formed from the inlet 22 to the outlet 23, and is configured by bending the tube in a Y shape in a cross-sectional view.
The outflow port 23 is an opening that is configured on the most downstream side of the trap unit 2 and discharges the waste water inside the trap unit 2 to the outside of the trap unit 2. Therefore, since the drain pipe 8 is connected downstream, the drainage inside the trap portion 2 is drained from the outlet 23 to the drain pipe.
The sealing water lower limit wall 24 is continuous from the inflow port 22, hangs downward from the Y-shaped lower branch portion of the trap portion 2, and hangs downward from the upper wall configured by bending the tube. Is a wall. In the present embodiment, it is a wall part for constituting the lowermost end of the sealing part 21 to be described later, continuously from the inlet 22. A drainage flow path 26 through which drainage passes is formed between the lower end of the sealed water lower limit wall 24 and the bottom wall of the trap portion 2.
The sealed water upper limit wall 25 is a wall configured to rise continuously from the bottom wall of the sealed water portion 21 toward the outlet 23. Moreover, it is a wall part for comprising the uppermost end of the sealing part 21 mentioned later.
As shown in FIG. 2 by hatching, the sealing portion 21 is a member configured to prevent a odor or pest from the sewage from flowing backward into the room by storing a part of the drainage in the trap portion 2. And it is comprised by the above-mentioned sealing water upper limit wall 25 and the sealing water lower limit wall 24. FIG. This is a drainage part in which drainage is stored in the trap part 2 and stored from the lowermost end of the sealed lower limit wall 24 to the uppermost end of the sealed upper limit wall 25. Since the drainage is stored, odors and pests from the sewer pipe do not flow back into the room.
The branch pipe 3 is an elbow that is L-shaped in sectional view and is configured to be detachably attached to the bottom of the trap portion 2 and rotatably connected to the trap portion 2. The branch pipe 3 is configured with an insertion pipe 32 configured in a lateral direction, and the overflow pipe 51 is connected to the insertion pipe 32 so that the drainage of the auxiliary drainage path 5 flows into the trap portion 2. It will be. As shown by the chain line in FIG. 5, the insertion pipe 32 of the branch pipe 3 is connected to the trap portion 2 so as to be axially rotatable. Therefore, the positioning of the auxiliary drainage path 5 is facilitated, and connection construction is simple. It becomes.
Further, the height of the upper end 31 of the branch pipe 3 is connected to be higher than the sealing water lower limit wall 24 of the trap portion 2 as shown in FIGS. Note that the upper end 31 of the branch pipe 3 indicates the uppermost end of the inner peripheral surface of the insertion pipe 32 configured in a tubular shape in the side surface direction and substantially in the horizontal direction of the branch pipe 3.
By doing in this way, since the upper end 31 of the branch pipe 3 is arrange | positioned in the location higher than the lowest end of the sealing water lower limit wall 24, it is the height for a part from the sealing water lower limit wall 24 lowest end to the branch pipe 3 upper end 31 The width can be reduced, and the overall height of the trap portion 2 can be reduced. Moreover, since the total height of the trap part 2 was able to be made low, space saving can be achieved.
Moreover, even if bubbles are mixed in the drainage, the branch pipe 3 is connected to the lower part of the sealing part 21 by connecting the connecting part of the branch pipe 3 to the lower part of the sealing part 21 of the trap part 2. Therefore, since the branch pipe 3 is sealed by the sealing portion 21, bubbles in the drainage do not flow backward to the reverse overflow pipe 51 (sub drainage path 5) side. Therefore, bubbles do not flow backward from the overflow port 12.
Further, as shown in FIG. 3, the connecting portion 6 is a member for connecting the trap portion 2 and the branch pipe 3 so as to be axially rotatable and watertight. In this embodiment, the connecting portion 6 is configured at the bottom of the trap portion 2. It is comprised from the groove part 61 comprised by the open end 27 outer periphery, the water stop packing 62, the C-shaped ring 63 comprised by another member, and the notch part 65 comprised by the branch pipe 3. As shown in FIG.
The groove portion 61 is a groove to which the convex portion 64 formed in the C-shaped ring 63 is engaged, and is configured at the bottom of the trap portion 2 and over the outer periphery of the open end 27 to which the branch pipe 3 is connected.
The water-stop packing 62 is the bottom of the trap part 2 and the bottom of the outer periphery trap part 2 of the open end 27 to which the branch pipe 3 is connected, and the outer periphery of the open end 27 to which the branch pipe 3 is connected; It is disposed below the groove 61. The watertight packing abuts between the branch pipe 3 and the trap portion 2 to achieve watertightness of both.
The C-shaped ring 63 is a notched ring body having a C-shape when viewed from above, and convex portions 64 configured to protrude in the inner circumferential direction are formed at the upper and lower ends of the inner circumferential surface. The convex portion 64 at the upper end engages with the groove portion 61 of the trap portion 2, and the convex portion 64 at the lower end engages with a notch portion 65 of the branch pipe 3 described later. Since the connection portion 6 is engaged and connected by such a C-shaped ring 63, the insertion tube 32 of the branch pipe 3 can be connected to the trap portion 2 so as to be rotatable about the axis.
Note that the insertion tube 32 is axially rotatable with respect to the trap portion 2, as shown by a chain line in FIG. 5, the branch tube 3 with respect to the axial center of the open end 27 of the trap portion 2 as viewed from above. Can be rotated.
The notch 65 is a cut groove formed in the upper end 31 opening of the branch pipe 3. The lower end convex part 64 of the C-shaped ring is detachably engaged.
The main drainage path 4 is a drainage path that drains from the drain outlet 11 of the tank body 1 to the inlet 22, and reaches the inlet 22 of the trap section 2 through the drain outlet 11 and the drain pipe 41 of the tank body 1. It is a route to.
The auxiliary drainage path 5 is a drainage path that drains from the overflow port 12 that opens to the side surface of the tank body 1, and reaches the branch pipe 3 of the trap portion 2 through the overflow port 12 and the overflow pipe 51 of the tank body 1. It is a route.

The above embodiment drain trap has the following construction procedure.
First, the drain pipe 41 which is the main drain path 4 is connected to the drain port 11, and the inlet 22 of the trap part 2 is connected to the lower side. At this time, the position of the sewage pipe under the floor is confirmed, the outlet 23 of the trap portion 2 is positioned, and the main drainage path 4 and the inlet 22 are connected. Therefore, when the inlet 22 is connected to the drain pipe 41, the inlet 22 and the outlet 23 are positioned. And the water stop packing 62 is attached to the lower outer periphery of the trap part 2 beforehand.
Further, one end of an overflow pipe 51 is connected to the overflow port 12 in advance, and the other end of the overflow pipe 51 and the branch pipe 3 are connected.
A projecting portion 64 at the lower end of the C-shaped ring 63 is engaged with the notch portion 65 of the branch pipe 3 in advance.
From this state, the branch pipe 3 to which the overflow pipe 51 is connected is inserted into the open end 27 at the bottom of the trap section 2. Then, since the convex part 64 at the upper end of the C-shaped ring 63 engages with the groove part 61 on the outer periphery of the trap part 2, the connection between the trap part 2 and the branch pipe 3 is completed. At this time, the outer periphery of the trap and the inner periphery of the branch pipe 3 are watertight by the water stop packing 62. When the branch pipe 3 and the trap portion 2 are connected, construction is performed on the shortest distance between the direction of the overflow port 12 and the overflow pipe 51 and the lower open end 27 of the trap portion 2 that is positioned and connected, or a portion where the pipe fits well. Since a person can set and position as appropriate, construction on site is possible. In addition, construction on site is very simple and easy. Moreover, the space saving of the piping space under the tank body 1 can be achieved by making the distance of the sub drainage path 5 into the shortest distance or improving the piping accommodation.
Thereafter, the drainage pipe 8 is connected to the outlet 23 of the trap portion 2 and the drainage pipe 8 and the sewage pipe are connected to complete the construction.

The drain trap has the following drainage flow.
When drainage is generated from the tank body 1, the tank body 1 drains out of the tank body 1 from the drain port 11 at the bottom of the tank body 1. The drainage discharged into the drainage port 11 is drained from the drain pipe 41 connected to the drainage port 11, that is, the main drainage path 4 to the trap part 2 inlet 22, and the drainage flows into the trap part 2. . The wastewater in the trap portion 2 that has flowed in from the inflow port 22 reaches the sealed water upper limit wall 25 via the drainage flow path 26 formed below the sealed water lower limit wall 24. The drainage that has reached the sealed water upper limit wall 25 gets over the sealed water upper limit wall 25 to the outlet 23 and is finally drained from the outlet 23 to the outside of the trap portion 2. At this time, the drainage is discharged through the sealing portion 21 formed between the lower end of the sealing lower limit wall 24 and the upper end of the sealing upper limit wall 25. The drainage discharged from the outlet 23 is finally drained through the drainage pipe 8 to the sewer pipe.
In addition, when drainage is generated from the overflow port 12 in the tank body 1 for reasons such as storing the water in the tank body 1 after closing the drain port 11 of the tank body 1, it is connected to the overflow port 12. The water is drained into the overflow pipe 51, that is, the auxiliary drainage path 5, and flows into the branch pipe 3 through the insertion pipe 32. At this time, since the sub drainage path 5 is connected below the sealing part 21 of the trap part 2, a part of the sealing part 21 is also formed in the sub draining path 5. After being passed through the sealing part 21 configured in the sub-drainage path 5, the drainage is drained into the branch pipe 3 connected to the trap part 2. Then, the branch pipe 3 passes between the drainage flow path 26 formed between the lower end of the sealing lower limit wall 24 of the trap portion 2 and the bottom portion of the trap portion 2, reaches the sealing upper limit wall 25, The water passes over the upper limit wall 25 and is drained to the outlet 23. At this time, the drainage from the auxiliary drainage path 5 passes through the sealing part 21 inside the trap part 2 and is drained to the outside of the trap part 2. Accordingly, the branch pipe 3 to which the auxiliary drainage path 5 is connected is connected to the lower side of the sealing part 21 of the trap part 2 and is therefore always sealed by the sealing part 21, so that the main drainage path Even if bubbles are mixed in the drainage of No. 4, the bubbles do not flow back to the auxiliary drainage path 5 side. The drainage discharged from the outlet 23 is finally drained through the drainage pipe 8 to the sewer pipe.

The drain trap of the present embodiment is used in a wash bowl used for a washstand, and as described in FIGS. 6 to 9, the tank body 1, the drain port 11, the overflow port 12, described below, The main drain path 4, the drain pipe 41, the trap portion 2, and the sub drain path 5 are configured.
The tank body 1 is a box as shown in FIG. 6, and a drain port 11 described later is opened at the bottom, and an overflow port 12 configured so that the water stored in the tank body 1 does not overflow on the side surface. Is open.
The drain port 11 is opened at the bottom of the tank body 1, and a drain pipe 41 is connected downstream thereof. The drainage in the tank body 1 is discharged from the drainage port 11 to the outside of the tank body 1 and drained to the trap portion 2 and the drainage pipe 8 through the drainage pipe 41.
The overflow port 12 is an opening that is disposed on the side surface of the tank body 1 so that the water stored in the tank body 1 does not overflow from the upper edge of the tank body 1. A tubular overflow pipe 51 is connected to the overflow port 12, and the lower end of the overflow pipe 51 is connected to a branch pipe 3 of the trap unit 2 described later. Then, the water is drained into the trap portion 2. Then, the overflow drainage drained into the trap part 2 is discharged from the outlet 23 to the outside of the trap part 2 and finally drained to the sewer pipe through the drain pipe 8.
The drain pipe 41 has one end connected to the drain port 11 of the tank body 1 and the other end connected to the inflow port 22 of the trap unit 2 disposed downstream. As will be described later, in this embodiment, this drainage path is referred to as a main drainage path 4. Further, the drain pipe 8 is a tubular member having one end connected to the outlet 23 of the trap portion 2 and the other end connected to the sewer pipe. Therefore, the trap part 2 will be arrange | positioned in the middle position of a drain pipe.
The trap part 2 is a drainage trap composed of a U-shaped tube when viewed from above. The trap part 2 includes an inlet 22, an outlet 23, a sealed lower limit wall 24, a sealed upper limit wall 25, and sealed water. It is comprised from the part 21, the branch pipe 3, and the connection part 6, and the upstream is connected to the drain pipe 41 of the main drainage path 4, and the downstream is connected to the drain pipe 8 connected to the sewer pipe. Further, since a branch pipe 3 which will be described later is connected to the bottom portion of the trap portion 2 by branching from the vicinity of the outlet 23, a part of the bottom portion is branched and opened.
The inflow port 22 is located at the uppermost stream of the trap portion 2 and is configured to drain the drainage from the drainage port 11. The drainage generated in the tank body 1 is drainage port 11 and the drainage pipe 41, that is, the main drainage path 4. This is an opening for flowing into the trap portion 2 through the. In the present embodiment, the cylindrical tube body is continuously formed from the inflow port 22 to the outflow port 23, and is configured by bending the tube body in a U shape in a sectional view.
The outflow port 23 is an opening that is configured on the most downstream side of the trap unit 2 and discharges the waste water inside the trap unit 2 to the outside of the trap unit 2. Therefore, since the drain pipe 8 is connected downstream, the drainage in the trap portion 2 is drained from the outlet 23 to the drain pipe 8. Moreover, a part is branched from the bottom wall of the trap part 2 to the outflow port 23 to constitute an open end 27 to which a later-described branch pipe 3 is connected. Further, the open end 27 is formed downstream of the sealing lower limit wall 24 of the trap portion 2 and branches off from the sealing water upper limit wall 25.
The sealing water lower limit wall 24 is a wall constituted by an upper wall that is continuously hung from the inlet 22 and bent by a tubular body. Moreover, the sealing water lower limit wall 24 is a wall part for comprising the lowest end of the sealing part 21 mentioned later. A drainage flow path 26 through which drainage passes is formed between the lower end of the sealed water lower limit wall 24 and the bottom wall of the trap portion 2.
The sealed water upper limit wall 25 is a wall configured to rise continuously from the bottom wall of the sealed water portion 21 toward the outlet 23. Moreover, it is a wall part for comprising the uppermost end of the sealing part 21 mentioned later.
As shown by hatching in FIG. 7, the sealing portion 21 is a member configured to prevent the odor and pest from the sewage from flowing backward into the room by storing a part of the drainage in the trap portion 2. Thus, the upper limit wall 25 and the lower limit wall 24 are set. This is a drainage part in which drainage is stored in the trap part 2 and stored from the lowermost end of the sealed lower limit wall 24 to the uppermost end of the sealed upper limit wall 25. Since the drainage is stored, odors and pests from the sewer pipe do not flow back into the room.
The branch pipe 3 is an elbow that is L-shaped in sectional view and is configured to be detachably attached to the bottom of the trap portion 2 and rotatably connected to the trap portion 2. The branch pipe 3 is configured with an insertion pipe 32 configured in a lateral direction, and the overflow pipe 51 is connected to the insertion pipe 32 so that the drainage of the auxiliary drainage path 5 flows into the trap portion 2. It will be. Since the branch pipe 3 is connected to the trap portion 2 so as to be axially rotatable, positioning of the auxiliary drainage path 5 is facilitated, and connection construction is simplified.
Further, as shown in FIGS. 7 to 9, the height of the upper end 31 of the branch pipe 3 is connected to be lower than the sealing water lower limit wall 24 and higher than the bottom of the trap portion 2. Note that the upper end 31 of the branch pipe 3 indicates the uppermost end of the inner peripheral surface of the insertion pipe 32 configured in a tubular shape in the side surface direction and substantially in the horizontal direction of the branch pipe 3.
Further, the upper end 31 of the branch pipe 3 is connected so as to be higher than the lower end of the trap portion 2 and lower than the sealing water lower limit wall 24. By doing in this way, since the upper end 31 of the branch pipe 3 is arrange | positioned in the location higher than the lowest end of the trap part 2 bottom wall, the height for the part from the lower end of the trap part 2 bottom part to the upper end 31 of the branch pipe 3 The width can be reduced, and the overall height of the trap portion 2 can be reduced. Moreover, since the total height of the trap part 2 was able to be made low, space saving can be achieved.
Moreover, even if bubbles are mixed in the drainage, the branch pipe 3 is connected to the lower part of the sealing part 21 by connecting the connecting part of the branch pipe 3 to the lower part of the sealing part 21 of the trap part 2. Therefore, since the branch pipe 3 is sealed by the sealing portion 21, bubbles in the drainage do not flow backward to the reverse overflow pipe 51 (sub drainage path 5) side. Therefore, bubbles do not flow backward from the overflow port 12.
Further, as shown in FIG. 8, the connecting portion 6 is a member for connecting the trap portion 2 and the branch pipe 3 so as to be axially rotatable and watertight. In this embodiment, the open end 27 at the bottom of the trap portion 2 is used. It is comprised from the external thread 66 comprised in the outer periphery, the water stop packing 62 comprised in the branch pipe 3 upper end 31 outer periphery, and the cap nut 67 comprised by another member.
The male screw 66 is a male screw 66 formed on the outer periphery of the open end 27 formed by branching the bottom of the trap portion 2, and is screwed with a female screw 68 formed on the cap nut 67.
The water-stop packing 62 is a triangular packing, and is arranged on the outer periphery of the upper end 31 of the branch pipe 3 on the connection side with the trap portion 2. The water-stop packing 62 prevents a cap nut 67 described later from coming off. It is carried out. Further, the water sealing between the trap portion 2 and the branch pipe 3 is achieved by the water stop packing 62.
The cap nut 67 has a female screw 68 on the inner periphery, and is screwed into a male screw 66 formed on the outer periphery of the open end 27 of the trap portion 2 described above. Further, it is rotatably locked to the mounting flange of the branch pipe 3.
Since the connection portion 6 is screwed and connected by such a cap nut 67, the insertion tube 32 of the branch pipe 3 is connected to the trap portion 2 so as to be axially rotatable as indicated by the imaginary line in FIG. I can do it.
The fact that the shaft can be rotated with respect to the trap portion 2 means that the branch pipe 3 is rotated with respect to the axial center of the open end 27 of the trap portion 2 when viewed from the top as shown by the imaginary line in FIG. This enables the insertion tube 32 to be rotated.
The main drainage path 4 is a drainage path that drains from the drain outlet 11 of the tank body 1 to the inlet 22, and reaches the inlet 22 of the trap section 2 through the drain outlet 11 and the drain pipe 41 of the tank body 1. It is a route to.
The auxiliary drainage path 5 is a drainage path that drains from the overflow port 12 that opens to the side surface of the tank body 1, and reaches the branch pipe 3 of the trap portion 2 through the overflow port 12 and the overflow pipe 51 of the tank body 1. It is a route.

The above embodiment drain trap has the following construction procedure.
First, the drain pipe 41 which is the main drain path 4 is connected to the drain port 11, and the inlet 22 of the trap part 2 is connected to the lower side. At this time, the position of the sewage pipe under the floor is confirmed, the outlet 23 of the trap portion 2 is positioned, and the main drainage path 4 and the inlet 22 are connected. Therefore, when the inlet 22 is connected to the drain pipe 41, the inlet 22 and the outlet 23 are positioned. And the water stop packing 62 is attached to the lower outer periphery of the trap part 2 beforehand.
Further, one end of an overflow pipe 51 is connected to the overflow port 12 in advance, and the other end of the overflow pipe 51 and the branch pipe 3 are connected.
The cap nut 67 is locked in advance by the water-stop packing 62 of the branch pipe 3. From this state, the branch pipe 3 to which the overflow pipe 51 is connected is inserted into the open end 27 at the bottom of the trap portion 2, and the female screw 68 of the cap nut 67 is screwed into the male screw 66 formed on the outer periphery of the open end 27 of the trap portion 2. Combine. Then, the connection between the trap unit 2 and the branch pipe 3 is completed. At this time, the outer periphery of the trap and the inner periphery of the branch pipe 3 are watertight by the water stop packing 62. When the branch pipe 3 and the trap portion 2 are connected, construction is performed on the shortest distance between the direction of the overflow port 12 and the overflow pipe 51 and the lower open end 27 of the trap portion 2 that is positioned and connected, or a portion where the pipe fits well. Since a person can set and position as appropriate, construction on site is possible. In addition, construction on site is very simple and easy. Moreover, the space saving of the piping space under the tank body 1 can be achieved by making the distance of the sub drainage path 5 into the shortest distance or improving the piping accommodation.
Thereafter, the drainage pipe 8 is connected to the outlet 23 of the trap portion 2 and the drainage pipe 8 and the sewage pipe are connected to complete the construction.

The drain trap has the following drainage flow.
When drainage is generated from the tank body 1, the tank body 1 drains out of the tank body 1 from the drain port 11 at the bottom of the tank body 1. The drainage discharged into the drainage port 11 is drained from the drain pipe 41 connected to the drainage port 11, that is, the main drainage path 4 to the trap part 2 inlet 22, and the drainage flows into the trap part 2. . The wastewater in the trap portion 2 that has flowed in from the inflow port 22 reaches the sealed water upper limit wall 25 via the drainage flow path 26 formed below the sealed water lower limit wall 24. The drainage that has reached the sealed water upper limit wall 25 gets over the sealed water upper limit wall 25 to the outlet 23 and is finally drained from the outlet 23 to the outside of the trap portion 2. At this time, the drainage is discharged through the sealing portion 21 formed between the lower end of the sealing lower limit wall 24 and the upper end of the sealing upper limit wall 25. The drainage discharged from the outlet 23 is finally drained through the drainage pipe 8 to the sewer pipe.
In addition, when drainage is generated from the overflow port 12 in the tank body 1 for reasons such as storing the water in the tank body 1 after closing the drain port 11 of the tank body 1, it is connected to the overflow port 12. The water is drained into the overflow pipe 51, that is, the auxiliary drainage path 5, and flows into the branch pipe 3 through the insertion pipe 32. At this time, since the sub drainage path 5 is connected below the sealing part 21 of the trap part 2, a part of the sealing part 21 is also formed in the sub draining path 5. After being passed through the sealing part 21 configured in the sub-drainage path 5, the drainage is drained into the branch pipe 3 connected to the trap part 2. Then, the branch pipe 3 passes between the drainage flow path 26 formed between the lower end of the sealing lower limit wall 24 of the trap portion 2 and the bottom portion of the trap portion 2, reaches the sealing upper limit wall 25, The water passes over the upper limit wall 25 and is drained to the outlet 23. At this time, the drainage from the auxiliary drainage path 5 passes through the sealing part 21 inside the trap part 2 and is drained to the outside of the trap part 2. Accordingly, the branch pipe 3 to which the auxiliary drainage path 5 is connected is connected to the lower side of the sealing part 21 of the trap part 2 and is therefore always sealed by the sealing part 21, so that the main drainage path Even if bubbles are mixed in the drainage of No. 4, the bubbles do not flow back to the auxiliary drainage path 5 side. The drainage discharged from the outlet 23 is finally drained through the drainage pipe 8 to the sewer pipe.

In addition to the above-described embodiments, the present invention can be modified as appropriate without departing from the scope of the claims.
As in the other embodiments shown in FIG. 10 and FIG. 11, the trap portion 2 may have a circular box shape and may be a trap portion 2 having two upper and lower parts. In the case of this embodiment, the inlet 22 and the outlet 23 are formed on the upper surface of the upper part, and the lower limit sealing wall 24 is configured to hang downward on the partition wall on the inner side rear surface of the upper part as shown in FIG. Configure. In addition, the connection surface of the outlet 23 of the upper part becomes the sealing upper limit wall 25. Further, the connection of the upper and lower parts of the trap portion 2 adopts a connection structure using the C-shaped ring 63 shown in the first embodiment. The lower part of the trap part 2 is integrally configured with a branch pipe 3 which is a connection point with the auxiliary drainage path 5. The upper end 31 of the branch pipe 3 here is the uppermost end of the opening part communicating with the lower part part of the trap part 2. Even in the embodiment as shown in FIGS. 10 and 11, since the branch pipe 3 is connected to the lower side of the sealing portion 21 of the trap portion 2, Bubbles are not mixed, and the total height of the drain trap can be lowered to achieve space saving. Further, since the upper part and the lower part of the trap part 2 are connected so as to be capable of rotating on the axis, the connection location between the auxiliary drainage path 5 and the trap part 2 can be arbitrarily set by rotating the axis.

In addition to the configurations shown in FIGS. 12 and 13, as in the embodiment, the trap portion 2 may have a circular box shape and may be a trap portion 2 having two upper and lower parts. In the case of this embodiment, the inflow port 22 and the outflow port 23 are formed on the upper surface of the upper part, and the sealing water lower limit wall 24 is formed in a cylindrical shape depending on the inner and rear surfaces of the upper part. . In addition, the connection surface of the outlet 23 of the upper part becomes the sealing upper limit wall 25. Further, the connection of the upper and lower parts of the trap portion 2 adopts a connection structure using the C-shaped ring 63 shown in the first embodiment. A branch pipe 3, which is a connection point of the auxiliary drainage path 5, is integrally formed on the lower part of the trap portion 2. The upper end 31 of the branch pipe 3 here is the uppermost end of the opening part communicating with the lower part part of the trap part 2. Even in the embodiment as shown in FIGS. 11 and 12, since the branch pipe 3 is connected below the sealing portion 21 of the trap portion 2, Bubbles are not mixed, and the total height of the drain trap can be lowered to achieve space saving. Further, since the upper part and the lower part of the trap part 2 are connected so as to be capable of rotating on the axis, the connection location between the auxiliary drainage path 5 and the trap part 2 can be arbitrarily set by rotating the axis.

DESCRIPTION OF SYMBOLS 1 Tank 11 Drainage port 12 Overflow port 2 Trap part 21 Sealing part 22 Inlet 23 Outlet 24 Sealing lower limit wall 25 Sealing upper limit wall 26 Drain flow path 27 Open end 3 Branch pipe 31 Branch pipe upper end 32 Insertion pipe 4 Main drainage path 41 Drainage pipe 5 Subdrainage path 51 Overflow pipe 6 Connection part 61 Groove part 62 Water stop packing 63 C-shaped ring 64 Projection part 65 Notch part 66 Male screw 67 Cap nut 68 Female screw 8 Drain pipe

Claims (6)

A trap part 2 for forming a sealed part 21 therein;
An inlet 22 into which drainage from the main drainage path 4 configured in the trap portion 2 flows,
An outlet 23 through which the waste water inside the trap portion 2 is discharged to the outside;
It is a wall configured to hang down from the inlet 22 of the trap part 2, and a drainage channel 26 is formed between the lower end of the trap part 2 and the bottom wall of the trap part 2, thereby forming a lower limit of the sealed part 21. Water lower limit wall 24;
A sealed upper limit wall 25 that is configured to stand from the bottom wall of the sealed water portion 21 toward the outlet 23 and constitutes the upper limit of the sealed water portion 21;
A sealing portion 21 formed by the sealing water lower limit wall 24 and the sealing water upper limit wall 25;
In a drain trap composed of
The branch pipe 3 to which the sub drainage path 5 other than the main drainage path 4 is connected is connected to the inside of the trap part 2 from the side surface direction of the trap part 2, and the height position of the upper end of the branch pipe 3 is set to the trap part 2. A drainage trap, wherein the drainage trap is located above the lower end, and the branch pipe 3 is connected to the trap portion 2 so as to be axially rotatable. 2. The drain trap according to claim 1, wherein a height position of an upper end of the branch pipe 3 is positioned above the sealing lower limit wall 24. 2. The drain trap according to claim 1, wherein a height position of an upper end of the branch pipe 3 is located below the sealing lower limit wall 24 and above a lower end of the trap portion 2. The branch pipe 3 is connected to the downstream side of the sealing water lower limit wall 24 and the upstream side of the sealing water upper limit wall 25. 5. Drainage trap as described in one. The branch pipe 3 is connected to the upstream side of the sealing lower limit wall 24 and to the upper surface of the sealing surface. Drain trap as described. Drainage can be stored inside, and a tank body 1 comprising a box body having a drainage port 11 at the bottom and an overflow port 12 at the side is provided, and the trap portion 2 is provided downstream of the drainage port 11 and downstream of the overflow port 12. The drainage path for drainage discharged from the drainage port 11 is a main drainage path 4, and the drainage path for drainage discharged from the overflow port 12 is a sub-drainage path 5. The drainage trap according to any one of claims 1 to 5.

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