JP2017203266A - Drain trap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain trap having a first flow channel through which drain flows in from facility equipment and a second flow channel through which drain flows in from the other facility equipment, the drain trap offering a backflow prevention function for the drain from the first flow channel side while suppressing an overall height of the device, and also being provided with a sounding prevention mechanism that reduces noise when a check valve is actuated.SOLUTION: A deodorizing cylinder 9 of a drain trap 1 includes a first flow channel 11 through which drain flows in from a washing machine as facility equipment, and a second flow channel 13 through which drain flows in from a waterproof pan as the other facility equipment. A check valve 15 is disposed at a boundary between the first flow channel 11 and the second flow channel 13 at an edge part of the second flow channel 13, to close the second flow channel 13, the check valve comprising a valve seat 16 and a valve body 17. The valve body 17 has a silencing member 30 fitted on a periphery as a sounding prevention mechanism, for reducing a noise that accompanies opening/closing of the valve body 17.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drain trap that discharges waste water from equipment and forms a trap function that prevents odors and pests from flowing back into the room, and more specifically, from the equipment. The present invention relates to a drain trap having a first flow path into which waste water flows in and a second flow path into which waste water from other equipment flows.

Equipment such as washing machines and bathtubs drains wastewater when used, but if the drainage pipe that drains the wastewater is simply connected to the sewage side, odors and pests from the downstream side will flow back into the room. . Therefore, the problem is solved by providing a device having a trap function called a drain trap.
Drain traps store drainage inside and form a trap function that prevents odors and pests from entering the indoors from the downstream side by filling the drainage channel with the stored drainage. . The waste water stored inside is called “sealed water”.
Here, the drain trap has a structure in which drainage from the waterproof pan flows as another facility device when the facility device is a washing machine. The waterproof pan functions as a tray that prevents the interior of the room from being flooded when water leaks due to a failure of the washing machine or defective equipment. In addition, when the bathtub is an equipment device, the drain trap has a structure in which drainage from a bathtub waterproof pan on which the bathtub is placed as another equipment or a waterproof pan for a bathroom that receives drainage from the bathroom flows. It has become. That is, the drain trap has a first flow path into which waste water from the equipment flows and a second flow path into which waste water from other equipment flows.

In the drainage trap described in Patent Document 1, wastewater from a washing machine as equipment and a waterproof pan as other equipment flows into the trap body, a flange member, a water seal, a deodorizing cylinder, a foam stopper pipe, Consists of dishes.
The trap body is a box having a substantially cylindrical shape with a bottom and an opening at the top, and has an outlet opening from the side. The flange member has a cylindrical shape having an outward flange portion at the upper end, and is screwed to a female screw provided on the inner periphery of the trap body by a male screw provided on the outer periphery.
The water seal is a bowl-shaped member arranged inside the trap body, and can store the waste water discharged from the equipment.
The deodorizing cylinder is a cylindrical member that is attached to the flange member and forms a drainage channel therein, and the lower end thereof is inserted into the inside of the water bottle.
The anti-foaming pipe is a cylindrical member that is disposed inside the deodorizing cylinder and that forms a drainage flow path therein. In addition, the anti-foaming pipe has a guide portion that guides drainage that passes through the inside at a lower end thereof to a drainage passage formed by the outer periphery of the deodorizing cylinder and the inner periphery of the sealing tub, and the guide portion is lower than the lower end of the deodorizing cylinder. It arrange | positions so that it may be located below.
The eye plate is a circular member attached to the flange member, and discharges the waste water generated on the waterproof pan into the drain trap, but has a net-like collecting part that prevents the outflow of dust larger than a predetermined amount. ing.

The drain trap described in Patent Document 1 configured as described above includes a first flow path for discharging waste water from a washing machine as equipment and a second flow path for discharging waste water from a waterproof pan as other equipment. Forming.
When drainage from the washing machine is generated, all the drainage flows into the trap body through the foam-preventing pipe, and is guided to the drainage channel formed by the outer periphery of the deodorizing cylinder and the inner periphery of the sealing tub by the guide portion. Then, the waste water overflowing the sealing tub is discharged from the discharge port that opens to the side of the trap body to the downstream pipe. Therefore, the waste water passing through the first flow path is prevented from passing through the flow path formed by the inner periphery of the deodorizing cylinder and the outer periphery of the foam-preventing pipe.
On the other hand, when drainage occurs on the waterproof pan, the drainage passes through the eye plate and flows into the trap body. The drainage descends the drainage channel formed by the inner periphery of the deodorizing cylinder and the outer periphery of the anti-foaming pipe, reverses the channel on the bottom surface of the sealing basin, and the drainage overflowing the sealing basin opens to the side of the trap body. From the outlet, it is discharged further downstream.

That is, the drain trap has a structure for preventing the drainage from flowing back from the waterproof pan by guiding the drainage discharged from the washing machine to the outside of the deodorizing cylinder by the foam stopper pipe.
However, when a large amount of wastewater is generated from the washing machine or when a large amount of foam is mixed in the wastewater from the washing machine, the drainage traps the gap between the guide portions of the foam stopper pipe. There was a problem that the water flowed back to the second flow path and overflowed onto the waterproof pan.

Patent Document 2 describes a drain trap in which a float type check valve is provided in a second channel that is a drain channel from a waterproof pan as another equipment. The float type check valve uses a valve element called float, which has a lower specific gravity than water. When fluid from the downstream side is generated, the valve element floats by drainage and closes the second flow path. This is a check valve that can prevent the backflow of drainage. However, the waste water discharged from the washing machine as the equipment is often foam-mixed waste water foamed by a detergent. Since the wastewater mixed with bubbles contains air inside, the mass per volume is small, and therefore the specific gravity is also low, so the float type check valve may not be able to rise, and it is not possible to reliably prevent the backflow of wastewater. It was difficult.
Further, in the drainage trap described in Patent Document 2, since the float type check valve is provided in the eye plate, the drain trap has a float type check valve in addition to the height width of the deodorizing cylinder at least. The flying height was required, and the overall height of the entire device was increasing. In addition, since the water seal part formed by the deodorizing cylinder and the sealing water bottle needs to have a height higher than a predetermined level according to the standard or the like, it is difficult to reduce the total height by simply shortening the deodorizing cylinder.

Therefore, the present applicant has proposed a drain trap shown in FIG.
The drain trap shown in FIG. 12 has a first flow path into which waste water from a washing machine as equipment flows and a second flow path into which waste water from a waterproof pan as other equipment flows. While the one flow path and the second flow path are merged inside the deodorizing cylinder, a check valve is disposed at the merge point between the first flow path and the second flow path. The check valve is a swing type check valve including a valve body rotatably fixed to the boundary between the first flow path and the second flow path, and a valve seat with which the valve body abuts. The check valve closes the second flow path except when drainage from the second flow path flows.
In the drain trap shown in FIG. 12, it is possible to increase the area of the flow path at the junction while suppressing the overall height of the apparatus by disposing a check valve inside the deodorizing cylinder.

  However, the drain trap has the following new problems.

In many cases, the pipes continuous from the drain trap connected to the washing machine are arranged on the downstream side of the drain trap so that other pipes such as pipes continuous from the bathtub join. And when waste_water | drain arises in said other piping, the inside of the waste_water | drain trap connected with the washing machine may also become a negative pressure by the induction siphon phenomenon. In addition, the piping continuous from the washing machine and the waterproof pan may have a negative pressure inside the drain trap due to drainage from the washing machine or exhaust into the drain trap accompanying the drying operation of clothes. In particular, the washing machine sometimes exhausts the hot air during the drying operation into the drain pipe through the drain trap, but the exhaust has a momentum enough to cause the sealed water in the drain trap to flow downstream. This creates a strong negative pressure in the piping.
When the negative pressure is generated, the check valve is drawn by the negative pressure and opens, and the valve body is separated from the valve seat. When the check valve is opened, ventilation is generated in the second flow path, and the check valve is closed again by eliminating the negative pressure inside the drain trap. Then, when the check valve is closed, the check valve is repeatedly opened and closed when the negative pressure is generated. At this time, a new problem arises in that noise is generated when the valve body repeatedly and violently collides with the inner wall of the valve seat or the deodorizing cylinder.
Further, since the check valve is partly disposed in the sealed water, the check valve swings with the ripple of the sealed water accompanying the negative pressure, and noise due to the collision is likely to be generated.

JP 2008-196169 A Japanese Patent Laid-Open No. 2001-200565

  In view of the above problems, the present invention is a drain trap that has an improved backflow prevention function that prevents backflow of drainage and the like from the first flow path side while suppressing the overall height of the device, and reduces noise associated with the operation of the check valve. It is an object of the present invention to provide a drain trap provided with a noise prevention mechanism.

In order to solve the above-mentioned problem, the present invention according to claim 1 provides:
A drainage trap that discharges drainage from the equipment and other equipment on which the equipment is placed to a downstream pipe,
A first flow path into which wastewater from the equipment flows,
A second flow path into which wastewater from other equipment flows,
A swing-type valve element that is disposed in the second flow path, prevents backflow of drainage from the downstream side, rotates with the inflow of drainage from the upstream side, and flows into the downstream side, and a valve A check valve comprising a valve seat against which the body abuts,
Equipped with a noise prevention mechanism that prevents noise during the check valve operation,
The sound generation preventing mechanism is a drain trap characterized by comprising a silencing member disposed at least at a contact portion between a valve body and a valve seat.

In the present invention according to claim 2, the valve body is made of a hard resin material,
The drainage trap according to claim 1, wherein the silencing member is a soft material coated on an outer periphery of a valve body.

The present invention according to claim 3 is a drainage trap that discharges drainage from the equipment and other equipment on which the equipment is placed to a downstream pipe,
A first flow path into which wastewater from the equipment flows,
A second flow path into which wastewater from other equipment flows,
A swing-type valve element that is disposed in the second flow path, prevents backflow of drainage from the downstream side, rotates with the inflow of drainage from the upstream side, and flows into the downstream side, and a valve A check valve comprising a valve seat against which the body abuts,
Equipped with a sound-prevention mechanism that prevents sound generation during non-return operation,
The sound noise prevention mechanism is a drain trap characterized by comprising a ventilation portion that ventilates the upstream side and the downstream side of the valve body.

The present invention according to claim 4 is a drainage trap that discharges drainage from the equipment and other equipment on which the equipment is placed to a downstream pipe,
A first flow path into which wastewater from the equipment flows,
A second flow path into which wastewater from other equipment flows,
A swing-type valve element that is disposed in the second flow path, prevents backflow of drainage from the downstream side, rotates with the inflow of drainage from the upstream side, and flows into the downstream side, and a valve A check valve comprising a valve seat against which the body abuts,
Equipped with a noise prevention mechanism that prevents noise during the check valve operation,
The sounding prevention mechanism is a drain trap characterized by comprising a biasing mechanism that biases the valve body against the valve seat.

The present invention according to claim 5 is a drainage trap that discharges drainage from the equipment and other equipment on which the equipment is placed to a downstream pipe,
A first flow path into which wastewater from the equipment flows,
A second flow path into which wastewater from other equipment flows,
A swing-type valve element that is disposed in the second flow path, prevents backflow of drainage from the downstream side, rotates with the inflow of drainage from the upstream side, and flows into the downstream side, and a valve A check valve comprising a valve seat against which the body abuts,
Equipped with a noise prevention mechanism that prevents noise during the check valve operation,
The sound generation prevention mechanism is a drain trap characterized by comprising a sound deadening member attached to the outer periphery of the drain passage.

The present invention according to claim 6 is characterized in that the drain trap is
A sealed water tank for storing wastewater inside,
The lower end is disposed in a sealed water bottle, and includes a deodorizing cylinder that forms a water-sealed state in combination with the sealed water bottle,
The drainage trap according to any one of claims 1 to 5, wherein the second flow path joins the first flow path inside the deodorizing cylinder.

According to the first aspect of the present invention, it is possible to reduce noise accompanying opening and closing of the valve body by the silencer member.
According to the second aspect of the present invention, since the valve body can be made hard, it is possible to prevent the valve body from rolling up due to negative pressure or the like. Therefore, the performance of the check valve can be stabilized.
According to the third aspect of the present invention, it is possible to suppress the opening and closing of the valve body due to the negative pressure and the shaking of the sealing water by eliminating the pressure difference between the upstream side and the downstream side of the valve body by the ventilation portion. It becomes possible. Therefore, by suppressing the opening and closing of the valve body, it is possible to reduce noise generated from the valve body.
According to the fourth aspect of the present invention, the opening and closing of the valve body due to the negative pressure or the shaking of the sealing water can be suppressed by biasing the valve body against the valve seat by the biasing mechanism. It becomes. Therefore, by suppressing the opening and closing of the valve body, it is possible to reduce noise generated from the valve body.
According to the fifth aspect of the present invention, since the sound deadening member is attached to the outer periphery of the drainage flow path, the noise generated due to the opening and closing of the valve body is reduced, and the generated noise is echoed outside the drain trap. It is possible to suppress as if there is no.
According to the sixth aspect of the present invention, the total height of the drain trap can be reduced. However, in the drain trap having the structure according to claim 6, since the check valve is disposed in the sealed water, it is easily influenced by the negative pressure and the shaking of the sealed water, and accompanying the opening and closing of the valve body Noise frequently occurs. However, in the present invention, it is possible to improve the performance of the drain trap by reducing the noise by providing a noise prevention mechanism.

It is sectional drawing which shows the drain trap of this invention. It is a disassembled perspective view which shows the structure of a drain trap. It is a disassembled perspective view which shows the structure of a deodorizing cylinder. It is (a) front view (b) rear view which shows the structure of a valve body. It is a reference figure showing the flow of drainage of the 1st channel. It is a reference figure showing the flow of drainage of the 2nd channel. It is sectional drawing which shows the drain trap of this invention which concerns on 2nd embodiment. It is A-A 'sectional drawing of (a) front view (b) and (a) which shows the structure of a valve body. It is sectional drawing which shows the drain trap of this invention which concerns on 3rd embodiment. It is sectional drawing which shows the drain trap of this invention which concerns on 4th embodiment. It is a reference figure which shows the construction state of a drain trap. It is sectional drawing which shows the conventional drain trap.

   Hereinafter, the drain trap 1 of the present invention will be described with reference to the drawings. The following description is for facilitating understanding of the embodiment, and the present invention is not limited and understood by this.

  Below, 1st Embodiment of this invention is described using FIG. 1 thru | or FIG. 6, and FIG.

As shown in FIG. 11, the drain trap 1 according to the present embodiment is attached to an opening of a washing machine 100 as equipment and a waterproof pan 200 as another equipment on which the washing machine is placed. .
The washing machine 100 is connected to the drainage trap 1 through a bellows-like flexible tube (not shown) and an elbow member 23, and wastewater generated by using the washing machine 100 passes through the first flow path 11 to the drainage trap 1. Inflow.
The waterproof pan 200 has a substantially square shape in plan view, and includes a pedestal portion for placing the washing machine 100 at the four corners thereof, and has a saucer shape whose outer periphery is covered by a waterproof wall portion. Is open. In addition, the said attachment hole is opened to the lowest position of the waterproof pan 200, and the drain trap 1 is attached. Therefore, when the attachment shown in FIG. 1 is completed, all the drainage generated on the waterproof pan 200 flows into the drain trap 1 through the second flow path 13.

  As shown in FIGS. 1 to 3, the drain trap 1 is composed of a trap body 2, a flange member 4, a water seal 7, a deodorizing cylinder 9, an eye plate 22, and a drain elbow 23. The first flow path 11 for discharging and the second flow path 13 for discharging the waste water from the waterproof pan 200 are provided.

  The trap body 2 has a substantially cylindrical shape with a bottom, and has a box shape with openings on the upper surface and side surfaces thereof. The opening formed in the upper surface of the trap body 2 has a female screw threaded on the inner periphery thereof, and is screwed into a flange member 4 described later via a packing P and a waterproof pan 200. The opening formed in the side surface of the trap body 2 is a discharge port 3 for discharging the waste water flowing into the trap body 2 to a pipe on the downstream side. The discharge port 3 extends in a cylindrical shape and further Downstream piping is bonded.

  The flange member 4 has a cylindrical shape, and includes an outward flange-like portion formed at the upper end thereof and a cylindrical portion extending downward from the lower end of the flange-like portion. A male screw portion is threaded on the outer periphery of the cylindrical portion, and is screwed into the trap body 2 via the packing P and the waterproof pan 200. The inner periphery of the cylindrical portion extends inward in the middle. An inwardly stepped portion 5 and a protruding portion 6 are formed. Although the outer periphery of the bowl-shaped portion has a larger diameter than the mounting hole of the waterproof pan 200, the outer periphery of the cylindrical portion is formed to have a smaller diameter than the mounting hole. The peripheral edge of the attachment hole is sandwiched between the upper surface. A sealing water bottle 7 described later is placed on the step portion 5, and a deodorizing cylinder 9 described later is engaged with the protrusion 6.

  The water seal 7 has a bottomed cylindrical shape with an opening at the top, and a plurality of notches 8 are formed in the circumferential direction at the upper part of the side surface. The notch 8 has a substantially rectangular shape, and the water seal 7 can store drainage (sealed water) from the bottom to the lower end of the notch 8.

  The deodorizing cylinder 9 is a cylindrical member that forms a drainage flow channel therein, and its lower end is disposed between the bottom surface of the sealing water bottle 7 and the notch 8, and is combined with the sealing water bottle 7 to provide water. Form a sealed state. In addition, the side wall of the deodorizing cylinder 9 is inclined about 8 degrees with respect to the vertical direction. The deodorizing cylinder 9 includes a first inlet 10, a first channel 11, a second inlet 12, a second channel 13, a check valve 15, a valve lid 18, and a mounting portion 20. The check valve 15 includes a valve seat 16 and a valve body 17 provided inside the deodorizing cylinder 9.

  The first inflow port 10 is an inflow port of the first flow path 11, and is opened on the upper surface of the deodorizing cylinder 9 and above the second inflow port 12, and a drainage elbow 23 connected to the washing machine 100 is attached. Accordingly, all the drainage discharged from the washing machine 100 flows into the first flow path 11 from the first inlet 10.

   The first flow path 11 is a drain flow path through which the waste water flowing in from the first inflow port 10 flows, and is inclined about 8 degrees with respect to the vertical direction toward the discharge port 3. Further, in the first flow path 11, a second flow path 13 to be described later joins from a substantially horizontal direction in the deodorizing cylinder 9, and a valve body 17 is attached to the joining portion.

  The second inflow port 12 is an inflow port of the second flow path 13 and opens on the upper surface of the deodorizing cylinder 9 and opens the flow path on the waterproof pan 200. Accordingly, all the waste water generated on the waterproof pan 200 flows into the second flow path 13 from the second inlet 12.

  The second flow path 13 is a drain flow path through which the waste water flowing in from the second inlet 12 flows, and after tilting about 8 degrees with respect to the vertical direction toward the discharge port 3, the deodorizing cylinder is passed through the bent portion 14. 9 is joined to the first flow path 11 from a substantially horizontal direction. In addition, the second flow path 13 is an end thereof, and has a valve seat 16 with which the valve body 17 abuts at a portion where the second flow path 13 joins the first flow path 11. The valve body 17 abuts against the valve seat 16. The flow path is blocked. Here, the valve seat 16 is substantially vertical in sectional view, and the valve body 17 contacts the valve seat 16 from a substantially horizontal direction. Although the valve seat 16 is described as “substantially vertical in sectional view”, the valve seat 16 shown in FIG. 1 is actually inclined at about 6 degrees with respect to the vertical direction. It is a surface. Therefore, although “the valve body 17 is in contact with the valve seat 16 from a substantially horizontal direction” is described, the valve body 17 is actually in contact with the valve seat 16 in an inclined state of about 6 degrees. The valve body 17 closes the second flow path 13 by its own weight when drainage does not flow into the second flow path 13 from the upstream side.

As shown in FIG. 4, the valve body 17 is composed of a substantially rectangular plate-shaped portion 171 and a shaft portion 173 formed at the upper end of the plate-shaped portion 171, and is made of a hard resin material having a higher specific gravity than water, The upper end is arranged at the boundary between the first flow path 11 and the second flow path 13.
The plate-like portion 171 is a plate body having a function of closing the second flow path 13, and a convex portion 172 is projected from the side surface of the plate-like portion 171. The plate-like portion 171 is fitted with a silencer member 30 around it, and the convex portion 172 is engaged with the concave portion 31 of the silencer member 30.
The shaft portion 173 is a cylindrical shaft extending in the side surface direction at the upper end of the valve body 17 and is rotatably held by the valve lid 18.

The muffler member 30 is made of a soft material such as rubber or silicon or an elastic material, and is fitted around the plate-like portion 171. Further, the muffling member 30 is fitted around the plate-like portion 171 of the valve body 17, and the recess 31 formed on the inner surface is engaged with the projection 172 to prevent the removal. In addition, in the state where the silencing member 30 is fitted, as shown in FIG. 4A, the entire surface of the plate-like portion 171 (the side in contact with the valve seat 16) is covered with the silencing member 30. As shown in FIG. 4B, the outer edges of the three sides of the back surface of the plate-like portion 171 excluding the upper side are covered with the muffling member 30.
Here, since the entire surface of the plate-like portion 171 of the valve body 17 is covered with the silencer member 30, the silencer member 30 is disposed at the contact point between the valve body 17 and the valve seat 16. Further, since the outer edges of the three sides of the back surface of the plate-like portion 171 are covered with the sound deadening member 30, the contact portion between the valve body 17 and the inner peripheral surface of the deodorizing cylinder 9 when the valve body 17 rotates. In addition, the sound deadening member 30 is arranged. In other words, in the present invention, the valve body 17 always abuts via the silencing member 30 when abutting against the valve seat 16 and the deodorizing cylinder 9.

  The valve lid 18 is a plate having a valve presser 19 on the lower side, and is a member that rotatably fixes the valve body 17 by pressing the shaft portion 173 from above the deodorizing cylinder 9. The valve lid 18 is welded to the deodorizing cylinder 9 after the valve body 17 is disposed.

  The attachment portion 20 is provided on the outer periphery of the upper end of the deodorizing cylinder 9 and includes a groove portion 21 and a packing that engage with the protrusion portion 6 of the flange member 4. The groove portion 21 is formed at four locations around the mounting portion 20 at every 90 degrees in the circumferential direction, and is inclined upward from the lower end of the mounting portion 20. Note that the width of the groove portion 21 in the vertical direction is slightly larger than the width of the protrusion portion 6 in the vertical direction, and the protrusion portion 6 can slide in the groove portion 21. Further, the projecting portion 6 is located at the end of the groove portion 21 in the construction completion state.

  The drainage elbow 23 is a substantially L-shaped pipe in a side view, and is connected to a bellows-like flexible pipe (not shown) connected to the washing machine 100 on the upstream side, and the lower end thereof is connected to the first inlet 10. Has been inserted.

  The eye plate 22 is disposed above the deodorizing cylinder 9 and is a substantially semicircular member placed above the second inlet 12, and discharges the waste water generated on the waterproof pan 200 into the drain trap 1. However, it has a net-like collection part that prevents the outflow of large garbage that may clog the piping.

  In the drain trap 1, the valve body 17 closes the second flow path 13 by its own weight in a state where drainage does not flow through the first flow path 11 and the second flow path 13 (no drainage). At this time, the silencing member 30 is disposed at the contact portion between the valve body 17 and the valve seat 16, and the valve body 17 is in watertight contact with the valve seat 16 via the silencing member 30.

  The flow of drainage when drainage is generated from the washing machine 100 with respect to the drain trap 1 will be described with reference to FIG. In FIG. 5, a part of the flow of drainage generated from the washing machine 100 is indicated by a two-dot chain line.

First, wastewater generated from the washing machine 100 flows into the first flow path 11 in the deodorizing cylinder 9 from the first inlet 10 through the flexible pipe and the drainage elbow 23.
Here, the wastewater that has flowed into the first flow path 11 flows toward the lower side of the deodorizing cylinder 9, but part of the drainage biases the valve body 17 toward the second flow path 13. Therefore, while drainage is flowing into the first channel 11, the second channel 13 is more tightly closed than when there is no drainage, and even when there is a large amount of drainage from the washing machine 100, etc. There is no backflow of drainage into the path 13.
And the waste water which arrived at the lower end of the deodorizing cylinder 9 reverses the flow at the bottom surface of the sealing jar 7, and ascends the drainage channel formed by the outer periphery of the deodorizing cylinder 9 and the inner periphery of the sealing tub 7. And the waste water which reached to the notch 8 provided on the side surface of the sealing tub 7 overflows to the outside of the sealing tub 7 and is discharged toward the sewage side from the discharge port 3 of the trap body 2.

  Next, the flow of drainage when drainage occurs on the waterproof pan 200 will be described with reference to FIG. In FIG. 6, a part of the flow of drainage generated on the waterproof pan 200 is indicated by a two-dot chain line.

First, when drainage occurs on the waterproof pan 200, the drainage flows on the waterproof pan 200 and flows into the second flow path 13 through the eye plate 22 and the second inlet 12. At this time, dust, dust or the like larger than a predetermined amount is captured by the collecting portion of the eye plate 22 and does not enter the second flow path 13.
Next, the flow direction of the waste water that has flowed into the second flow path 13 is bent by about 90 degrees by the bent portion 14 of the second flow path 13, and comes into contact with the valve element 17 (silencer member 30). At this time, since water pressure is applied to the valve body 17 in a direction away from the valve seat 16, the valve body 17 rotates about the shaft portion 173 and opens the second flow path 13.
And the drainage which rotated the valve body 17 flows in into the 1st flow path 11 from the substantially horizontal direction, and flows toward the downward direction of the deodorizing cylinder 9. FIG. At this time, the valve body 17 rotated by the water flow may come into contact with the inner wall of the deodorizing cylinder 9 at the bottom of the plate-shaped portion 171, but as described above, the outer edges of the three sides on the back surface of the plate-shaped portion 171 are It is covered with a silencing member 30. Therefore, since the silencer 30 is disposed at the contact point between the valve body 17 and the deodorizing cylinder 9, the noise during the collision is reduced by the silencer 30.
The subsequent flow passes through the drainage flow path formed by the outer periphery of the deodorizing cylinder 9 and the inner periphery of the sealing tub 7 in the same manner as the flow of the drainage flowing through the first flow path 11, and the sewage from the notch 8 and the discharge port 3. It is discharged toward the side.
When the drainage from the waterproof pan 200 is completed, the check valve 15 is closed by the weight 17 of the check valve 15 due to its own weight, and comes into contact with the valve seat 16 via the silencing member 30 to block the second flow path 13 again. To do.

  In addition, when drainage from the washing machine 100 or the waterproof pan 200 is finished, a part of the drainage that flows into the trap body 2 is stored inside the sealing water bottle 7, and a part of the drainage channel on the inner periphery of the deodorizing cylinder 9. Then, the trap function is formed by filling the drainage flow path formed by the outer periphery of the deodorizing cylinder 9 and the inner periphery of the sealed water bottle 7 with the drainage to a full water (sealed) state.

  Here, when a large amount of drainage is generated from the washing machine, or when exhaust occurs due to the drying operation of the clothes, the drainage passage in the drain trap 1 may become negative pressure. At this time, the pressure difference is generated between the upstream side and the downstream side of the check valve 15, so that the valve body 17 rotates and repeats opening and closing, and the valve body 17 collides with the valve seat 16 and the inner wall of the deodorizing cylinder 9. However, as described above, in the present invention, the silencer as a noise preventing mechanism is provided at the contact point between the valve element 17 and the valve seat 16 and at the contact point between the valve element 17 and the inner peripheral surface of the deodorizing cylinder 9. 30 is arranged. Therefore, since the valve body 17 collides with the valve seat 16 and the inner peripheral surface of the deodorizing cylinder 9 through the sound deadening member 30, the noise during the collision is reduced by the sound deadening member 30.

  Further, when there is a large amount of drainage from the first flow path 11 or when there is foamy drainage, the drainage tends to flow back upstream from the drain trap 1 through the second flow path. The check valve 15 (the valve seat 16 and the valve element 17) closes the second flow path 13, so that the drainage does not flow backward. That is, since the check valve 15 has a structure in which the second flow path 13 is closed when there is no drainage, the drainage flow path is filled with a fluid having a specific gravity lower than that of water, such as drainage mixed with bubbles. Can also suitably prevent backflow. Note that “the specific gravity is lower than that of water” actually includes a fluid whose specific gravity is not lower than that of water but whose mass per volume is lower than that of water by containing a large amount of air or the like.

In the drain trap 1 of the present invention, since the valve element 17 is in contact with the valve seat 16 of the second flow path 13 from a substantially horizontal direction, the drain flow path when the valve is opened is wide, and a suitable drain flow rate is obtained. It can be secured. Furthermore, since the check valve 15 is provided in the deodorizing cylinder 9, the overall height of the apparatus can be suppressed.
And since the 2nd flow path 13 merges with the 1st flow path 11 from the substantially horizontal direction inside the deodorizing cylinder 9, the 1st flow path 11 and the 2nd flow path 13 comprise a trap function using a common sealing water. Therefore, it is possible to prevent any one of the flow paths from running out of sealed water.
Further, the deodorizing cylinder 9 is inclined about 8 degrees with respect to the vertical direction as it proceeds downward, and the valve seat 16 is inclined about 6 degrees in the same direction as the deodorizing cylinder 9. Therefore, by forming the boundary between the first flow path 11 and the second flow path 13 as a parting line, the deodorizing cylinder 9 can be integrally formed by injection molding.
Furthermore, in the present invention, the noise during operation of the check valve 15 can be reduced by the muffling member 30 as a noise preventing mechanism. If the valve body 17 is entirely made of a soft material such as rubber or silicon or an elastic material, the valve body 17 may be rolled up and the backflow prevention effect may not be achieved. However, in the present invention, the valve body 17 is made of a hard resin material, and the sound deadening member 30 is fitted around the valve body 17, so that the problem of the above-mentioned squeezing does not occur and the effect of preventing the backflow is surely produced. Is possible.

  Next, the drain trap 1 which concerns on 2nd embodiment of this invention is demonstrated using FIG.7 and FIG.8. In addition, in 2nd embodiment described below, it demonstrates only about the location different from the drain trap 1 concerning said 1st embodiment, and about the description about other parts, it is the same number as 1st embodiment. A description thereof will be omitted.

The valve body 17 is composed of a substantially rectangular plate-shaped portion 171 and a shaft portion 173 formed at the upper end of the plate-shaped portion 171, and is made of a hard resin material having a specific gravity higher than that of water. And the second flow path 13 at the boundary.
The plate-like portion 171 is a plate body having a function of closing the second flow path 13, and a ventilation portion 32 is formed above the plate-like portion 171. The ventilation portion 32 is a noise prevention mechanism in the present embodiment, and vents the upstream side and the downstream side of the valve body 17, but the bubble-mixed drainage generated on the downstream side cannot pass through, that is, a problem. The opening has a size that allows only a very small amount of drainage to pass therethrough, and is opened above the notch 8 of the water seal 7. Therefore, as shown in FIG. 8, the ventilation part 32 is arrange | positioned above the water surface of the sealing water.
The shaft portion 173 is a cylindrical shaft extending in the side surface direction at the upper end of the valve body 17 and is rotatably held by the valve lid 18.

  In the drain trap 1 according to the second embodiment, when a large amount of drainage is generated from the washing machine, or when exhaust is caused by the drying operation of the clothes, the drainage passage in the drain trap 1 may be negative pressure. is there. At this time, a pressure difference occurs between the upstream side and the downstream side of the check valve 15, but in the second embodiment of the present invention, the upstream side and the downstream side can be ventilated by the ventilation portion 32 formed in the valve body 17. Therefore, the pressure difference can be eliminated. Therefore, the valve body 17 does not rotate due to the pressure difference, and the valve body 17 does not collide with the valve seat 16 or the inner wall of the deodorizing cylinder 9.

  On the other hand, when there is a large amount of drainage from the first flow path 11 or when there is foam-mixed drainage, the drainage tends to flow upstream from the drain trap 1 through the second flow path. Here, in the valve body 17 in the second embodiment, the upstream side and the downstream side are ventilated in the ventilation portion 32, but the ventilation portion 32 is opened above the water surface of the sealing water, and flows backward to the ventilation portion 32. It is placed in a position where it is difficult for the drainage to be introduced. In addition, since the opening of the ventilation portion 32 is formed to have a size that prevents the wastewater mixed with bubbles from passing therethrough, the wastewater mixed with bubbles can prevent the passage. Therefore, the valve body 17 can suppress the water flow of the wastewater that is going to flow backward, and can sufficiently exhibit the backflow prevention function.

  In the second embodiment, by forming the ventilation portion 32 in the valve body 17, the negative pressure in the drain trap 1 is eliminated and the noise accompanying the operation of the check valve 15 is reduced. The shape, size and the like of 32 can be changed as appropriate. In addition, a check valve that opens and closes with a lighter pressure than the valve body 17 may be disposed in the ventilation portion 32 separately.

   Next, the drain trap 1 which concerns on 3rd embodiment of this invention is demonstrated using FIG. In addition, in 3rd embodiment described below, it demonstrates only about the location different from the drain trap 1 concerning said 1st embodiment, and the same number as 1st embodiment is demonstrated about description of another part. A description thereof will be omitted.

The valve body 17 is composed of a substantially rectangular plate-shaped portion 171 and a shaft portion 173 formed at the upper end of the plate-shaped portion 171, and is made of a hard resin material having a specific gravity higher than that of water. And the second flow path 13 at the boundary.
The plate-like portion 171 is a plate having a function of closing the second flow path 13.
The shaft portion 173 is a cylindrical shaft extending in the side surface direction at the upper end of the valve body 17 and is rotatably held by the valve lid 18.

Here, the valve body 17 is urged against the valve seat 16 by a sounding prevention mechanism including the urging mechanism 33.
The urging mechanism 33 is a weight disposed at the end of the plate-like portion 171 and urges the valve body 17 against the valve seat 16.

  In the drain trap 1 according to the third embodiment, when a large amount of drainage is generated from the washing machine, or when exhaust is caused by the drying operation of the clothes, the drain passage in the drain trap 1 may be negative pressure. is there. At this time, a pressure difference occurs between the upstream side and the downstream side of the check valve 15, but in the third embodiment of the present invention, the valve body 17 is biased against the valve seat 16 by the biasing mechanism 33. Therefore, the valve body 17 does not rotate due to the negative pressure, and the valve body 17 does not collide with the valve seat 16 or the inner wall of the deodorizing cylinder 9.

  In the third embodiment, the valve body 17 is urged against the valve seat 16 by the urging mechanism 33 including a weight. However, the urging mechanism 33 is not limited to the weight. A spring member may be attached to the shaft portion 173 of the body 17, and the biasing mechanism 33 may be configured by a magnetic force or other configuration.

  The drain trap 1 of the present invention is not limited to the above embodiment. For example, as in the fourth embodiment shown in FIG. 10, the noise preventing mechanism may be configured by attaching a muffling member 34 to the outside of the drainage channel such as the outer periphery of the trap body 2. In the fourth embodiment, the noise is reduced by preventing the generated noise from reverberating outdoors. Therefore, in FIG. 11, the muffling member 34 is attached to the outer periphery of the trap body 2, but it can be appropriately changed in consideration of the structure of the drain trap, the construction location, etc.

The embodiments of the present invention are as described above, but the present invention is not limited to the shapes of the above-described embodiments, and various modifications may be made without departing from the spirit of the invention. For example, in the first embodiment, the silencing member 30 is covered on the outer periphery of the valve body 17, but the silencing member 30 may be attached to the valve seat 16 side. The silencing member 30 may be attached to the valve body 17 or the valve seat 16 by a method such as adhesion. Furthermore, the material of the muffling member 30 is not limited to the material described in the above embodiment, and a material that exhibits the same effect such as foamed resin instead of rubber or silicon may be adopted.
Moreover, in the said embodiment, although the drain trap 1 was attached to the washing machine as equipment, and the waterproof pan 200 as other equipment, the said equipment is tank bodies, such as a bathtub, The equipment may be a bathtub pan or a washing pan. Moreover, it does not depart from the gist of the invention such that it is attached to an equipment having two sinks, so-called double sinks, and the equipment may be one sink and the other equipment may be the other. Various changes may be made in the range.

DESCRIPTION OF SYMBOLS 1 Drain trap 2 Trap main body 3 Outlet 4 Flange member 5 Step part 6 Protrusion part 7 Seal water bottle 8 Notch 9 Deodorant cylinder 10 First inlet 11 First flow path 12 Second inlet 13 Second flow path 14 Bending part 15 Check valve 16 Valve seat 17 Valve body 171 Plate-like portion 172 Protruding portion 173 Shaft portion 18 Valve lid 19 Valve retainer 20 Mounting portion 21 Groove portion 22 Drainage elbow 30 Silencing member 31 Concavity portion 32 Venting portion 33 Energizing mechanism 34 Silencer Material P Packing 100 Washing machine 200 Waterproof pan

Claims (6)

A drainage trap that discharges drainage from the equipment and other equipment on which the equipment is placed to a downstream pipe,
A first flow path into which wastewater from the equipment flows,
A second flow path into which wastewater from other equipment flows,
A swing-type valve element that is disposed in the second flow path, prevents backflow of drainage from the downstream side, rotates with the inflow of drainage from the upstream side, and flows into the downstream side, and a valve A check valve comprising a valve seat against which the body abuts,
Equipped with a noise prevention mechanism that prevents noise during the check valve operation,
The drainage trap according to claim 1, wherein the noise preventing mechanism comprises a silencing member disposed at least at a contact portion between the valve body and the valve seat. The valve body is made of a hard resin material,
The drainage trap according to claim 1, wherein the silencing member is a soft material coated on an outer periphery of a valve body. A drainage trap that discharges drainage from the equipment and other equipment on which the equipment is placed to a downstream pipe,
A first flow path into which wastewater from the equipment flows,
A second flow path into which wastewater from other equipment flows,
A swing-type valve element that is disposed in the second flow path, prevents backflow of drainage from the downstream side, rotates with the inflow of drainage from the upstream side, and flows into the downstream side, and a valve A check valve comprising a valve seat against which the body abuts,
Equipped with a sound-prevention mechanism that prevents sound generation during non-return operation,
The noise trapping mechanism comprises a vent portion for ventilating the upstream side and the downstream side of the valve body. A drainage trap that discharges drainage from the equipment and other equipment on which the equipment is placed to a downstream pipe,
A first flow path into which wastewater from the equipment flows,
A second flow path into which wastewater from other equipment flows,
A swing-type valve element that is disposed in the second flow path, prevents backflow of drainage from the downstream side, rotates with the inflow of drainage from the upstream side, and flows into the downstream side, and a valve A check valve comprising a valve seat against which the body abuts,
Equipped with a noise prevention mechanism that prevents noise during the check valve operation,
The noise trapping mechanism comprises a biasing mechanism that biases a valve body against a valve seat. A drainage trap that discharges drainage from the equipment and other equipment on which the equipment is placed to a downstream pipe,
A first flow path into which wastewater from the equipment flows,
A second flow path into which wastewater from other equipment flows,
A swing-type valve element that is disposed in the second flow path, prevents backflow of drainage from the downstream side, rotates with the inflow of drainage from the upstream side, and flows into the downstream side, and a valve A check valve comprising a valve seat against which the body abuts,
Equipped with a noise prevention mechanism that prevents noise during the check valve operation,
The noise trapping mechanism is constituted by a silencing member attached to the outer periphery of the drainage channel. The drain trap is
A sealed water tank for storing wastewater inside,
The lower end is disposed in a sealed water bottle, and includes a deodorizing cylinder that forms a water-sealed state in combination with the sealed water bottle,
The drain trap according to any one of claims 1 to 5, wherein the second channel joins the first channel inside the deodorizing cylinder.

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