JP6745085B2 - Drain trap - Google Patents

Description

The present invention relates to a drainage trap arranged in the middle of a pipe or in a pipe end of various drainage facilities.
More specifically, the present invention relates to a vertical drain trap that allows drainage from various drainage facilities to flow downward, and belongs to a piping technique and a building construction technique.

Conventionally, the drain pipe is provided with an S-shaped trap for the purpose of suppressing invasion of bad odors and harmful insects from the outlet side.
However, in this S-shaped trap, since this utilizes the blocking action of the wastewater accumulated in the bent portion of the drainage pipe, a fixed amount of wastewater always remains in the bent portion, and solid matters are clogged. There was a problem such as being easy. Further, when the frequency of drainage is low, there is a problem that the drainage in the trap evaporates and the blocking action cannot be obtained.

Therefore, as a concrete method for solving such a problem, a balance weight is provided on the rocking valve body instead of the S-shaped trap, and the rocking valve body is closed by the balance weight when there is no drainage, and when the drainage is performed, the balance weight is closed. There is known a method of providing a drain trap (valve trap) that opens a valve body by the weight of drainage or flowing water pressure.

For example, in Japanese Utility Model Publication No. 63-23489 (Patent Document 1), it can be connected to a drainage pipe without a large space, and it can be used without anxiety that garbage may not be clogged, and an increase in foul odor can be ensured. A drainage trap has been proposed that can completely prevent the invasion of insects and mice as well as being able to prevent it.

This drainage trap has a pipe piece on the side that serves as an outlet for drainage, and a projecting piece that closes the pipe mouth along the inclined surface in a split circle shape on the pipe wall that forms an obtuse angle with the inclined surface. A pair of supporting arms are provided on the protruding piece toward the outside of the pipe mouth, and a shaft is bridged between the supporting arms. On the other hand, the valve main body and the weight holding portion have a dogleg shape in side view. The weight is fixed to the weight holding portion of the valve that is bent so that the weight holding portion is positioned horizontally and the valve is swingably attached to the shaft, and the valve main body is directly aligned with the protruding piece by the weight. It is urged in the direction of closing the tube mouth so as to be continuous on the line.

Further, in Japanese Patent Laid-Open No. 2004-197453 (Patent Document 2), the valve trap unit can be taken out by rotating the cap to remove it from the threaded portion of the casing, and lifting the cap upward. A drainage trap that can be easily and reliably cleaned is proposed.

The drainage trap has a tubular body that is connectable to the lower end of the upstream drainage pipe, and has a sleeve formed with a flange extending outward in the radial direction at the lower end of the tubular body, and a sleeve having substantially the same diameter as the flange. A casing having a tubular body and having a tubular portion connectable to the upper end portion of the downstream side drain pipe at the lower end portion and a screw portion formed on the outer peripheral surface on the upper end side of the tubular body portion, and the inclined short tubular body An openable and closable oscillating valve element is provided at the pipe opening, and a balance weight for urging the oscillating valve element in the closing direction is provided. The upper end portion of the oscillating valve element projects radially outward and has a diameter substantially the same as that of the flange portion of the sleeve. The valve trap unit with the flange formed, and the sleeve flange and the valve trap unit flange can be accommodated in a short cylindrical part that has an opening in the center of the upper end cover that can be inserted through the sleeve tubular body and connects to the lower side of the outer periphery. And a cap having a threaded portion corresponding to the threaded portion of the casing formed on the inner peripheral surface of the lower end of the short cylindrical portion.

Furthermore, Japanese Unexamined Patent Publication No. 2010-275763 (Patent Document 3) proposes a drainage trap that can simplify cleaning and maintenance work.

This drainage trap has connecting portions for connecting drainage pipes at opposing portions of the trap main body whose bottom surface is flat, and has an opening at the top, and the opening can be opened and closed by a cap member. In the horizontal type, a mounting seat for horizontally opening and closing a valve body having a balance weight is horizontally arranged in the trap main body which constitutes the drainage trap, and is always in contact with the valve body. A valve seat that is in contact with and has a flow hole for drainage is provided so as to incline from one end of the mounting seat to the bottom face toward the downstream direction, and is divided into a drainage inflow part and a drainage outflow part, and the mounting seat The valve body is swingably held on a mounting base that is detachably attached to the mounting base, and the mounting base that holds the valve body can be detached from the mounting seat by removing the cap member. is there.

Japanese Utility Model Publication No. 63-23489 (claim for utility model registration, FIG. 2) JP-A-2004-197453 (claims, FIG. 1) JP, 2010-275763, A (claim, Drawing 1)

The drainage trap disclosed in Patent Document 1 requires little maintenance because it has a small amount of residual drainage and is simple, but depending on the usage situation, it may adhere along the contact portion between the valve body and the pipe mouth. There is a problem that the valve body may adhere to the pipe mouth due to residual water stains and the opening and closing ability may deteriorate, and in such a case, it is necessary to remove the trap from the drain pipe and perform cleaning etc. ..

In the drainage trap disclosed in Patent Document 2, the valve trap unit flange portion is joined to the casing upper end edge to accommodate the valve trap unit in the casing, and further the sleeve flange portion is overlapped with the valve trap unit flange portion. While the sleeve flange and valve trap unit flange are covered with the cap that has the sleeve tubular body inserted through the upper end opening, screw the cap screw into the casing screw to cover the cap upper end. Since the sleeve flange portion and the valve trap unit flange portion are sandwiched between the casing and the casing upper edge so that they are integrated with each other, when the valve trap unit is taken out, the cap is rotated to rotate the casing It is necessary to remove the cap from the screwed part and lift the cap upward.
Therefore, further improvement is required in that it can be easily attached and detached during maintenance and cleaning.

The drainage trap disclosed in Patent Document 3 is intended for horizontal placement and has a different structure from a vertical drainage trap. If this is used as a vertical installation, when the valve body receives the drainage directly from above when drainage is performed, the impact may cause the valve body to fall off. ..

In view of such a current situation, the present invention provides a swingable valve element having balance weight, which is used in a horizontal type drain trap, which is developed by the applicant, and which has a balance weight. In addition to applying the structure that can be removably placed to the vertical drain trap, we also diligently studied the structure as a vertical drain trap.

As a result, the swingable valve element having the balance weight, which constitutes the drainage trap, can be removably arranged and firmly fixed in the trap main body to facilitate cleaning and to be discharged during drainage. The present invention has been completed by finding a vertical drain trap that prevents the valve body from falling off due to the impact of water.

In order to achieve the above object, the invention according to claim 1 of the present invention is
The tubular trap main body has a connecting portion for connecting a drainage pipe at each of opposite portions, and a side opening of the trap main body having a circular shape in plan view, which is formed through the side surface of the trap main body. In a vertical drain trap whose opening on one side can be opened and closed by a cap member,
In the trap main body constituting the drainage trap, the mounting seat for vertically opening and closing the valve body having the balance weight is arranged so as to be parallel to the axial direction,
A valve seat, which is always in contact with the valve body and has a drainage through hole, is provided so as to be inclined in the downstream direction from one end of the mounting seat to the side surface of the trap main body, and the drainage inflow part and the drainage It is divided into the outflow part,
The valve body is swingably held on a mounting base that is detachably mounted on the mounting seat,
The mounting base holding the valve body is engaged and disengaged with each of the engaging groove formed on the upper side and the engaging portion formed on the lower side, and the support body protruding from the mounting seat. Removable from the mounting seat ,
It is a drainage trap characterized in that a support body that engages with the engagement groove is configured so that its tip reaches near the side opening .

The invention according to claim 2 of the present invention is
The drainage trap according to claim 1 ,
The mount is
The left and right ends thereof are provided with a pair of arm portions formed to project in parallel with the width direction, and a semi-circular connecting member that extends downward from the tip edge of each arm portion and connects both arm portions to each other.
The connecting member is
A shield plate having a semicircular shape in plan view, the outer peripheral portion of which is configured to abut the inner wall near the side opening, and which extends upward from the lower end edge by a predetermined length. To do.

The invention according to claim 3 of the present invention is
The drainage trap according to claim 1 or 2 ,
The valve body is
It is composed of a plate-like body that is bent in a V shape in a side view, the lower part has a tongue shape, the uppermost part has a balance weight that constantly urges the valve body in the closing direction, and the bending part has a swinging part. It is characterized in that it has a cylindrical holding portion for holding a supporting shaft for, and is swingably provided on the mounting base via the supporting shaft.

The invention according to claim 4 of this invention is
In the drainage trap according to any one of claims 1 to 3 ,
The mounting seat is
At the tip of the connecting plate extending from the upper part on the inflow side of the trap main body in the downstream direction, the mounting plate is extended toward the outflow side so as to be parallel to the axial direction, and the tip of the mounting plate. A valve seat having a flow hole for flowing the waste water, which reaches the side wall mainly of the trap from the section, is provided so as to be inclined toward the downstream direction,
The support is
A pair of upper support bodies protruding from the outer surface of the mounting plate and engaging with engagement grooves formed at a required interval on the upper side of the mounting base, and on the lower side of the mounting base. It is characterized in that it is composed of a pair of lower support bodies that engage with the engaging portions formed at intervals.

The invention according to claim 5 of the present invention is
The drainage trap according to claim 4 ,
The outer surface of the mounting plate is further provided with a plurality of ridges for aligning and fixing the mounting base.

The invention according to claim 6 of the present invention is
The drainage trap according to claim 4 or 5 ,
The mount is
It is composed of a plate having a trapezoidal shape in plan view, and both end portions on the upper side thereof are provided with engagement grooves respectively engaged with a pair of upper support bodies arranged on the outer surface of the mounting seat, and both end portions on the bottom side. Is provided with an engaging portion that engages with a pair of lower supports disposed on the outer surface of the mounting seat, and a support for swingably holding the valve body facing the engaging portion. A bearing having a substantially L-shaped cross section that engages and holds both ends of the shaft is formed, and a plate-like body is integrally erected on the outer surface to prevent excessive swing of the valve body. It is characterized by being present.

The invention according to claim 7 of this invention is
The drainage trap according to claim 6 ,
The plate-shaped body,
It is characterized in that it has a height in contact with the back surface of the cap member that closes the opening.

The drainage trap of the present invention has a connecting portion for connecting a drainage pipe at each of opposing portions of the tubular trap main body, and a side opening of a circular shape in plan view formed through the side surface of the trap main body. A vertical type in which the side opening is freely opened and closed by a cap member, and a valve body having a balance weight is vertically opened and closed in the trap main body that constitutes the drain trap. A mounting seat for causing the valve seat to be arranged in parallel to the axial direction, and a valve seat that is in constant contact with the valve body and has a drainage flow hole is provided in the downstream direction of the mounting seat. The valve element is swingably held on a mounting base that is installed so as to be inclined from one end to the side surface of the trap main body and is divided into a drainage inflow part and a drainage outflow part and is detachably mounted on the mounting seat. The mounting base holding the valve body is disengaged from each of the engaging groove formed on the upper side and the engaging portion formed on the lower side, and the support body protruding from the mounting seat. Is configured to be detachable from the mounting seat.
Therefore, since the mounting base can be firmly fixed to the mounting seat, the drain trap has an advantage that the valve body can be reliably prevented from falling off due to the impact of discharged water. doing.
Further, since the valve member and the valve body of the drain trap can be easily attached and detached, cleaning and maintenance work thereof can be easily performed.

Incidentally, in the drain trap, the support to be engaged with the engaging groove, Ru is configured such that the tip reaches the vicinity of the side opening.
With such a configuration, the mounting base can be more firmly fixed to the mounting seat, so that the valve body can be reliably prevented from falling off due to the pressing of the valve body.

Particularly, the mounting plate is extended toward the outflow side so that it is parallel to the axial direction at the tip of the connecting plate that extends in the downstream direction from the upper part of the inflow side of the trap main body. And a valve seat having a flow hole for flowing the drainage, which reaches the side wall of the trap body from the tip of the mounting plate, is provided so as to be inclined toward the downstream direction, and further, the mounting plate When a plurality of ridges for aligning and fixing the mounting base are provided on the outer surface of the above, the mounting base can be more firmly fixed to the mounting seat.

Furthermore, the mounting base has a pair of arm portions projecting parallel to the width direction at its left and right ends, and a half extending downward from the tip edge of each arm portion to connect the both arm portions to each other. The connecting member is configured to have an annular shape, and the connecting member is configured such that an outer peripheral portion thereof abuts an inner wall near the side opening portion and extends a predetermined length upward from a lower end edge thereof. It may be configured to include the formed shielding plate having a semicircular shape in plan view.
With such a configuration, it is possible to prevent the splash of water caused by the circulation (falling) of the waste water from leaking to the outside of the trap main body.

Furthermore, a pair of support bodies for fixing a mounting base for swingably holding a valve body to the upper surface portion of a mounting plate constituting a mounting seat for mounting the valve member, and alignment of the mounting base, By providing a plurality of ridges for fixing, the valve member and the valve body can be easily attached and detached, and since the complicated shape portion exists only near the opening, cleaning the drain trap, Maintenance work is simplified.

The drainage trap of the present invention uses a swingable valve body having a balance weight to shut off the drainage inflow portion and the drainage outflow portion, and does not use accumulated water as in the conventional case. , It is excellent in the transmission of odor from the downstream side, and in the control of invasion of insects and small animals.

In addition, since it is not necessary to consider the generation of odor due to the decay of accumulated water used for drainage traps, and the contamination of pipes due to scale caused by accumulated water, it is easy to manage the pipes and clean the drainage trap, This simplifies the maintenance work.

It is sectional drawing which shows an example of the drainage trap concerning this invention. It is a top view of the drainage trap shown in FIG. FIG. 2 is a plan view of the drainage trap shown in FIG. 1 with a cap member and a valve member removed. FIG. 4 is a sectional view taken along the line A-A′ of the drain trap shown in FIG. 3. It is a front view of the valve member in the drainage trap of this invention. It is a front side perspective view of a mount which constitutes the above-mentioned valve member. It is a rear side perspective view of a mounting base which constitutes the valve member. It is a top view of the mount which comprises the said valve member. It is a front view of FIG. FIG. 7 is a left side view of FIG. 6. It is explanatory drawing which shows an example of the bearing which pivotally supports the spindle for hold|maintaining a valve body swingably.

Hereinafter, the drainage trap according to the present invention will be specifically described with reference to the accompanying drawings.
The present invention is not limited to the disclosed embodiments, and various modifications can be made without departing from the scope of the invention.

FIG. 1 is a sectional view showing an example of a drainage trap according to the present invention.
As shown in FIG. 1, a drainage trap 1 according to the present invention is detachably attached to a tubular trap main body 2 and a side opening 3 formed through the side surface of the trap main body 2 and circular in plan view. And a valve member 5 that is detachably mounted in the trap main body 2.

In addition, in this embodiment, the drain trap 1 is made of synthetic resin, but the material constituting the drain trap 1 is not particularly limited and may be made of other material such as metal material.
For example, the drain trap 1 may be made of a transparent synthetic resin material so that the contamination of the pipe, the cleaning of the drain trap, and the maintenance work can be simplified.

As shown in FIG. 1, the trap main body 2 has a drain pipe connecting portion 2a on the upper opening side for inflowing drainage and a water pipe connecting portion on the lower opening side for outflowing drainage. 2b are formed by extending in the vertical direction.

Inside the trap main body 2, as shown in FIG. 1, a mounting seat 6 for mounting the valve member 5 is arranged.

As shown in FIGS. 1, 3 and 4, the mounting seat 6 includes a connecting plate 6a extending downwardly from the upper edge of the opening of the side opening 3 toward the center side, and the connecting plate 6a. A mounting plate 6b extending from the front end edge of 6a toward the center so as to be parallel to the axial direction, and a front end edge of the mounting plate 6b always contacts the valve body 51 of the valve member 5 described later. The valve seat 6c in contact is provided so as to be inclined toward the side of the connecting portion 2b so as to reach the side surface of the trap main body 2.
In addition, in this embodiment, the connecting plate 6a is configured to extend to the vicinity of the central axis of the trap main body 2, but there is no particular limitation on the length thereof, depending on the size of the valve body or the like. It may be selected as appropriate.

The connecting plate 6a, the mounting plate 6b, and the valve seat 6c are provided in the trap main body 2 so that the drainage flowing from the connecting portion 2a does not directly flow out to the connecting portion 2b side. The inside of the trap main body 2 is partitioned into a drainage inflow portion X on the side of the connecting portion 2a and a drainage outflow portion Y on the side of the connecting portion 2b.

A U-shaped flow hole 6d for letting out the drainage discharged from various drainage facilities is formed in the valve seat 6c which is inclinedly arranged in the trap main body 2, and a valve member for always closing the flow hole 6d. The drainage is configured to flow from the drainage inflow portion X to the drainage outflow portion Y only when the valve body 51 of No. 5 is opened.

As shown in FIGS. 3 and 4, the attachment plate 6b of the trap main body 2 faces outward in the radial direction with a required gap at both ends on the upper side of the outer surface (the surface on the side of the opening 3). And support bodies (upper support bodies) 6g, 6g that are formed so as to project perpendicularly to the axial direction, and at both ends on the lower side, with a required spacing, toward the radially outer side, the axial direction Supports (lower support) 6e, 6e formed to project perpendicularly to

As shown in FIG. 1, at a predetermined position on the side surface of the trap body 2, a side opening 3 having a circular shape in plan view is formed so as to penetrate therethrough, and a cylindrical portion standing sideways along the opening edge. 7 is integrally formed, and a cap member 4 having an inner diameter substantially equal to the outer diameter of the tubular portion 7 is detachably attached to the opening of the tubular portion 7.

In this embodiment, a handle 4a for rotating the cap member 4 is attached to the upper surface of the cap member 4, as shown in FIG.

Further, in FIG. 1, the engagement between the tubular portion 7 and the cap member 4 forms a plurality of screw grooves along the circumferential direction on the outer peripheral surface of the tubular portion 7 from the viewpoint of airtightness. To form a male screw (not shown) having a plurality of threads, while forming a female screw (not shown) having a reverse screw structure with the male screw on the inner peripheral surface of the cap member 4. Is done by.
As the engaging means, a known engaging means such as a so-called bayonet type can be adopted.

As shown in FIG. 1, the valve member 5, which is detachably mounted in the trap main body 2, includes a metallic valve element 51 bent in a V-shape when viewed from the side, and this valve element 51 It comprises a mounting base 8 for mounting on the mounting seat 6 of the trap main body 2.

As shown in FIG. 5, the lower portion of the valve body 51 has a tongue shape, and a balance weight BW for constantly urging the valve body 51 in the closing direction is provided at the uppermost portion 51a. Has a bearing (holding portion) (not shown) through which the support shaft 52 for swinging is inserted.

As is apparent from FIGS. 6 to 10, the mounting base 8 which constitutes the valve member 5 is composed of a plate 81 having a trapezoidal shape in plan view having a required thickness, and is provided at both ends on the bottom side thereof. As shown in FIGS. 6 to 9, bearing portions 83, 83 are provided so that engaging portions 82, 82 that engage with the support bodies 6e, 6e are formed.
The bearing portions 83, 83 are formed in a substantially L-shaped cross section facing the engaging portions 82, 82, and are combined with the support bodies 6e, 6e to be described later, so that This constitutes a bearing that pivotally supports a support shaft 52 for holding the valve body 51 in a swingable manner.

On the other hand, as shown in FIGS. 6 to 9, both ends on the upper side of the mounting base 8 are required in accordance with the shapes of the upper support members 6g, 6g so as to engage with the upper support members 6g, 6g. The engaging grooves 86, 86 are formed by cutting out to the depth.

Therefore, according to the present invention, in addition to the engagement between the supports 6e, 6e of the mounting plate 6b and the engaging portions 82, 82 of the mounting base 8, the upper supports 6g, 6g of the mounting plate 6b and the mounting base 8 are mounted. Since the mounting base 8 is mounted on the mounting plate 6b by engaging with the engaging grooves 86, 86, the valve member 5 can be firmly fixed to the mounting seat 6 inside the trap main body 2. ..
As a result, in the present invention, the valve body is reliably prevented from falling off due to the impact of water during drainage.

The upper supports 6g, 6g are preferably configured such that their tips reach the vicinity of the side opening 3.
With such a configuration, the mounting base 8 can be more firmly fixed to the mounting plate 6b, so that the valve body is reliably prevented from falling off when the valve body 51 is pushed.

Further, the center of the back surface of the plate 81 constituting the mounting base 8 is prevented from coming into contact with the inner bottom surface of the cap member 4 and lifting the plate 81 upward, and excessively swinging the valve body 51. At the same time, a plate-like body 84 serving as a knob for attaching and detaching the valve member 5 is integrally provided.

Further, the center of the bottom surface side of the plate 81 comes into contact with the ridge body 6f provided on the upper surface of the tip end portion of the mounting plate 6b to prevent the mounting base 8 from moving forward (to the discharge port side). At the same time, a stopper 85 for positioning is integrally provided.
In FIG. 6 and the like, reference numeral 851 is a holding member projectingly formed at both ends on the bottom surface side of the plate 81 so as to come into contact with the upper surface of the support body 6e of the mounting plate 6b, and the mounting base 8 is attached to the mounting plate 6b. It is for further firmly and stably fixing.

Furthermore, the plate 81 is, as shown in FIGS. 1, 6, 7 and 10, a pair of arms formed at the left and right ends of the back surface thereof so as to project in parallel in the width direction (outward in FIG. 1). The parts 87, 87 and a connecting member 88, which extends vertically downward from the leading edge of each arm part 87, 87 and connects the two arm parts 87, 87 to each other and which is semi-annular in a plan view, are provided.

The outer peripheral portion of the connecting member 88 is formed in a semi-annular shape along the inner wall in the vicinity of the lateral opening portion 3 and is configured to contact the inner surface of the lateral opening portion 3.
Further, the connecting member 88 is formed with a flange portion 89 that extends at a right angle from the rear end edge toward the radially outer side so as to contact the inner wall of the tubular portion 7, and the lower end edge thereof. From the above, a shielding plate 89a having a semicircular shape in plan view is integrally formed so as to extend upward by a predetermined length so as to cover a predetermined range on the lower side of the side opening 3.
Therefore, it is possible to prevent the splash of water caused by the fall of the drainage from leaking to the outside of the trap main body.

The size of the shielding plate 89a may be within a range in which the balance weight BW does not contact the shielding plate 89a when swinging.
In addition, in this embodiment, the shielding plate 89a is formed so as to cover a range of the lateral opening 3 from the lower end to about ⅔ to ⅓.

As shown in FIG. 6 and FIG. 9 and the like, the connecting member 88 may be further provided with a flange portion that is formed so as to extend at a right angle from the rear end edge toward the inside in the radial direction.

In FIG. 3, reference numeral 6h is a ridge body that serves as an index for positioning when the mounting base 8 is mounted on the mounting plate 6c of the trap main body 2 and that prevents displacement, It is arranged on the plate 6a.

In the drainage trap 1 composed of such constituent members, first, the support shaft 52 is attached to the valve body 51, and then the projections at both ends are formed into the bearing portions 83, 83 (specifically, at both end portions of the mounting base 8). The valve member 5 is configured by engaging the valve body 51 with respect to the mounting base 8 by being engaged with the rear surface of the valve body 51.

Then, the valve member 5 is inserted from the side opening 3 of the trap main body 2 while pinching the tip of the plate-like body 84 of the mounting base 8 in a state where the valve body 51 is located on the connecting portion 2b side, Supports 6e, 6e projecting from a mounting plate 6b arranged in the main body 2 so as to be parallel to the axial direction are fitted to engaging portions 82, 82 provided at both ends of a lower portion of the mounting base 8. , The upper supports 6g, 6g are respectively inserted into the engaging grooves 86, 86 provided at both ends of the upper portion of the mounting base 8 to firmly fix the mounting base 8 on the mounting seat 6.

At that time, the mounting base 8 engages with the ridge body 6f of the trap main body 2 and the stopper 85 of the mounting base 8, and further, the engagement between the upper edge portion of the mounting base 8 and the ridge bodies 6h, 6h. According to the combination, it is fixedly held on the mounting seat 6 in a stable state.

Further, as shown in FIG. 4, the support members 6e, 6e of the mounting plate 6b of the trap main body 2 are formed such that the tip ends thereof are notched downward and have a substantially inverted L-shaped cross section. As shown in, the bearing is formed by the engagement with the bearings 83, 83 of the mount 8, and the support shaft 52 is pivotally supported by the bearing.

At the same time, the back surface of the valve element 51 abuts on the peripheral edge portion of the valve seat 6c that is continuously connected to the tip of the mounting plate 6b of the trap main body 2 in a slanted manner. Is always closed.

Thus, after the valve member 5 is swingably mounted in the trap main body 2 and the side opening 3 is closed by the cap member 4, the drain trap 1 is arranged in the middle of the pipe path. ..
At this time, the top portion of the plate-shaped member 84 contacts the back surface of the cap member 4, prevents the mounting base 8 from moving upward, and is stably fixed on the mounting plate 6b.
Further, the lower edge portion of the connecting member 88 abuts on the inner wall near the side opening portion 3, and the lower portion of the side opening portion 3 is covered with the shielding plate 89a in a predetermined range.

As is clear from FIG. 1, the drain trap 1 arranged in the middle of the piping path is provided with a valve body 51 when there is no drainage or when there is no amount of drainage required to swing the valve body 51. Since the balance weight BW always contacts the valve seat 6c and closes the flow hole 6d, the drainage does not flow to the connecting portion 2b side.

When a predetermined amount of drainage from various drainage facilities is accumulated in the drainage inflow part X of the trap main body 2 and the valve body 51 is pressed toward the drainage outflow part Y side by the water pressure or the fluid pressure, the valve body 51 moves the support shaft 52. As a fulcrum, the flow hole 6d opens by swinging upward as shown by the chain line in FIG.
When the circulation hole 6d is opened, the drainage flowing into or accumulated in the drainage inflow portion X flows to the drainage outflow portion Y side through the circulation hole 6d, and when the water pressure on the valve body 51 is released, the valve body 51 is released. Is attached to the valve seat 6c again by the action of the attached balance weight BW, and prevents drainage from flowing back from the drainage outflow portion Y to the drainage inflow portion X.

In addition, when dust, foreign matter, or the like is accumulated or clogged in the drain trap 1 during use, the cap member 4 is removed, and the inside is easily cleaned by performing an operation reverse to the above procedure. It is also possible to replace the parts very easily.

Unlike the S-shaped trap, the vertical drain trap having such a configuration can reduce the size of the trap itself and simplify the structure, and is easy to maintain and clean.

The drainage trap according to the present invention can be used by attaching water (drainage) discharged from various drainage facilities to a pipe path or a pipe end that discharges downward, and The valve body can be used without dropping off, and maintenance and cleaning can be performed without removing the pipe.
Therefore, since it can be used in a part of a commercial or domestic drainage facility that requires drainage, it has a possibility of being used in a wide range of industrial fields.

1 Drain Trap 2 Trap Main Body 2a Drain Inflow Side Connection 2b Drain Outflow Side Connection 3 Side Opening 4 Cap Member 4a Handle 5 Valve Member 51 Valve Body 51a Top 51b Refraction Part 52 Spindle BW Balance Weight 6 Mounting seat 6a Connection plate 6b Mounting plate 6c Valve seat 6d Flow hole 6e Support body 6f Projection body 6g Upper support body 6h Projection body 7 Cylindrical portion 8 Mounting base 81 Plate 82 Engaging portion 83 Bearing portion 84 Plate-like body 85 Stopper 851 Holding member 86 Engagement groove 87 Arm portion 88 Connecting member 89 Flange portion 89a Shielding plate X Waste water inflow portion Y Waste water outflow portion

Claims (7)

The tubular trap main body has a connecting portion for connecting a drain pipe, respectively, at opposite portions thereof, and a side opening of a circular shape in plan view penetratingly formed on a side surface of the trap main body, and the side. In a vertical drain trap whose opening on one side can be opened and closed by a cap member,
In the trap main body constituting the drainage trap, the mounting seat for vertically opening and closing the valve body having the balance weight is arranged so as to be parallel to the axial direction,
A valve seat, which is always in contact with the valve body and has a drainage through hole, is provided so as to be inclined in the downstream direction from one end of the mounting seat to the side surface of the trap main body, and the drainage inflow part and the drainage It is divided into the outflow part,
The valve body is swingably held on a mounting base that is detachably mounted on the mounting seat,
The mounting base holding the valve body is engaged and disengaged with each of the engaging groove formed on the upper side and the engaging portion formed on the lower side, and the support body protruding from the mounting seat. Removable from the mounting seat ,
A drainage trap characterized in that a support body that engages with the engagement groove is configured so that its tip reaches near the side opening . The mount is
The left and right ends thereof are provided with a pair of arm portions formed to project in parallel with the width direction, and a semi-circular connecting member that extends downward from the tip edge of each arm portion and connects both arm portions to each other.
The connecting member is
A shield plate having a semicircular shape in plan view, the outer peripheral portion of which is configured to abut the inner wall near the side opening, and which extends upward from the lower end edge by a predetermined length. The drainage trap according to claim 1 . The valve body is
It is composed of a plate-like body that is bent in a V shape in a side view, the lower part has a tongue shape, the uppermost part has a balance weight that constantly urges the valve body in the closing direction, and the bending part has a swinging part. The drainage trap according to claim 1 or 2 , further comprising a tubular holding portion for holding a supporting shaft for holding the supporting shaft, and being swingably provided on the mounting base via the supporting shaft. The mounting seat is
At the tip of the connecting plate extending from the upper part on the inflow side of the trap main body in the downstream direction, the mounting plate is extended toward the outflow side so as to be parallel to the axial direction, and the tip of the mounting plate. A valve seat having a flow hole for flowing the waste water, which reaches the side wall mainly of the trap from the section, is provided so as to be inclined toward the downstream direction,
The support is
A pair of upper support bodies protruding from the outer surface of the mounting plate and engaging with engagement grooves formed at a required interval on the upper side of the mounting base, and on the lower side of the mounting base. The drainage trap according to any one of claims 1 to 5 , wherein the drainage trap is composed of a pair of lower support bodies that engage with the engagement portions formed at intervals. The drain trap according to claim 4 , wherein a plurality of protrusions for aligning and fixing the mounting base are further provided on an outer surface portion of the mounting plate. The mount is
It is composed of a plate having a trapezoidal shape in plan view, and both end portions on the upper side thereof are provided with engaging grooves respectively engaged with a pair of upper support bodies arranged on the outer surface of the mounting seat, and both end portions on the bottom side. Is provided with an engaging portion that engages with a pair of lower supports disposed on the outer surface of the mounting seat, and a support for swingably holding the valve body facing the engaging portion. A bearing portion having an L-shaped cross section that engages and holds both ends of the shaft is formed, and a plate-shaped body is integrally erected on an outer surface portion to prevent excessive swing of the valve body. The drainage trap according to claim 4 or 5 , characterized in that. The plate-shaped body,
7. The drainage trap according to claim 6 , wherein the drainage trap has a height that abuts a back surface of a cap member that closes the opening.

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