KR20170003207U - A draining trap - Google Patents

Abstract

The present invention relates to a drainage trap having a backflow prevention function, and its object is to provide a drainage trap capable of selectively opening and closing the drainage induction pipe by the discharged sewage, And it is possible to fundamentally prevent odors and pests of the drain pipe from flowing into the room (reverse flow) without the sewage being evaporated.
For this purpose, according to the "drain trap with backflow prevention function" according to the present invention, A drainage trap body 100 is formed at the center so that the drainage pipe P is inserted into the drainage pipe P and the drainage trap body 110 extends downward and the upper surface thereof is inclined downward from the edge toward the center. The upper end portion 410 is assembled into the inner wall of the upper end of the tub-coupling hole 110 of the drain trap body 100 in a threaded manner and the lower end portion 420 is assembled into the tub- 110), a drain guide pipe (400) extending to an inner center of the lower side and guiding drainage; The upper end of the wall surface 310 is movable upward and downward at a lower end of the tub-coupling hole 110 of the drain trap body 100, A plurality of drainage windows 330 are formed on a central portion of the wall surface 310 and the remaining drainage tanks 300 are filled with sewage having a predetermined height in a space lower than the height of the drainage windows 330; The upper end is hooked on the upper end outward flange 340 of the sewage retainer 300 and the lower end is hooked on the lower end inner wall inward flange 112 of the barrel-coupling hole 110, A coil spring 500 elastically supporting the sewage remaining cylinder 300 upward to selectively open and close the lower end portion 420 of the water discharge induction cylinder 400; A seating groove 350 formed in the shape of a strip at the lower end of the wall surface 310 of the drain canister 300 so as to limit the maximum lift of the sewage retainer 300 due to the elastic support force of the coil spring 500 after the discharge of sewage is completed, An O-ring member 600 which is provided on the inward flange 112 of the barrel-engagement hole 110; .

Description

A drainage trap with backflow protection {A DRAINING TRAP}

The present invention relates to drainage traps; More particularly, the present invention relates to a drain trap provided with a backflow preventing function, which is provided on the floor of a bathroom (bathroom) or a veranda to guide water out of the drain pipe while preventing the drain pipe odor from being introduced.

Generally, a water collecting tank is installed to collect various kinds of sewage discharged from not only common houses such as multi-family houses and apartments but also households. The bottom of each family bathroom or veranda and the collecting tank are connected through a water pipe (drain pipe) have. In such a drain pipe, a large amount of water and dirt, such as toilet and bathtubs around the living room, together with the odor (odor) can flow backward. In order to prevent backflow of odor (odor) The drain trap is installed.

1, a conventional drain trap is provided with a drain trap body 1 which is installed directly above a drain pipe P and is provided with a through hole 2 at the center thereof, (2) of the drain trap main body (1), a drainage residual tube (3) which is detachably attached to the coupling hole (2) while remaining lower and filled with water of a predetermined height, And a drain hole 5a which is installed so as to cover the upper part of the drain trap main body 1 and which covers the entire upper part of the drain trap main body 1, And is provided with a perforated needle cover 5. The water is collected in the central portion of the drain trap main body 1 through the drain holes 5a of the filter cover 5 and passes through the drain guide tube 4 and is then discharged to the drain pan (See arrow direction in Fig. 1) through the drain pipe 3a. In the drainage process, dirt such as hair is firstly filtered by the filter cover 5 and is also filtered inside the drainage induction tube 4 and the drainage residual tube 3. Since the bottom of the drainage retaining cylinder 3 is filled with water of a predetermined height and the lower end of the drainage inducing cylinder 4 is always kept locked, the backflow of the odor (odor) from the drainage pipe P is prevented.

However, in such a conventional drain trap structure, as shown in FIG. 2, if the wastewater remaining in the drainage remaining tube 3 evaporates, the smell of the drain pipe P may enter the room. That is, since the drainage remaining trough 3 is in direct communication with the room, if the house is vacated for a long period of time and water is not disposed on the floor of the toilet, residual wastewater at the bottom of the drainage remaining trough 3 evaporates, and the drainage remaining trough 3, Serves as an air passage by directly communicating with the inside of the water pipe (P). Therefore, the smell (odor) of the drain pipe P flows back into the room through the drainage remaining tub 3 and the drain guide pipe 4 (see the arrow direction in FIG. 2) There is a drawback that it occurs.

The present invention addresses this problem. The purpose of the present invention is to enable the lower end of the drainage induction pipe to be selectively opened and closed by the discharge sewage load so that the residual sewage does not evaporate inside the drainage trap even if the house is vacated for a long time without draining water on the indoor floor, (Drainage trap having a backflow prevention function) which can fundamentally prevent the inflow (backward flow) of the air into the room.

The present invention for achieving this object is as follows.

1. A drainage trap having a backflow preventing function while being installed on a floor of a bathroom or a veranda equipped with a drain pipe and guiding drainage;

The drain trap; A drain trap body extending downward from the center and having an upper surface inclined downward from an edge toward a center of the drain trap body so as to be inserted into the drain pipe; And an upper end portion thereof is assembled to the inner wall of the upper end of the barrel-coupling hole of the drain trap body in a screw-fitting manner, and a lower end portion thereof extends to the inner center of the lower portion of the barrel- Induction passage; Wherein a top wall of the drain trap body is upwardly and downwardly movable at a lower end portion of the drain trap body, and a plurality of drain holes are drilled on a central portion of the wall, Residual sewage residue passing through the lower space filled with sewage of a certain height; The lower end of the sewage retaining cylinder is hooked on an inward flange on the upper end of the sewage retaining cylinder and the lower end is hooked on the lower end inner wall inward flange of the tub- A coil spring for elastically supporting the sewage retainer in an upward direction so as to be selectively opened and closed; And an upper end of the lower end of the drain canister is provided with a groove formed in the lower end portion of the wall of the drain tank so as to limit the maximum lift of the sewage retainer by the elastic support force of the coil spring. Member; .

According to the drain trap having the backflow prevention function according to the present invention constructed as described above, The bottom surface of the sewage retaining pail selectively opens and closes the lower end of the drainage inducing pail by the load of discharged sewage so that the sewage remaining in the sewage retaining pail of the drainage trap is not evaporated without draining water on the floor of the room for a long time, And the effect that the pest can be effectively prevented from flowing into the room (reverse flow). That is, if the drainage is not performed, the residual water tank filled with the residual water is lifted by the elastic supporting force of the coil spring to close the lower end of the drain water guiding cylinder, thereby preventing direct communication between the room and the drain water observation side. It is possible to fundamentally block the inflow of dust into the air.

Particularly, according to the "drain trap having a backflow prevention function" according to the present invention, When the sewage drainage is completed and the sewage retaining cylinder ascends and descends, an elastic material o-ring member is brought into close contact with the inward flange of the barrel-to-barrel so that the clearance between the barrel-binding barrel and the wall surface of the sewage retaining barrel can be more firmly closed. As a result, there is an advantage that it completely prevents the flow of ozone / wastewater, which can flow back through the drain pipe to the drain trap, in the rainy season as well as the drain pipe odor.

1 is a cross-sectional view showing a conventional inner structure of a drain trap.
2 is a view showing a process in which a malodor in a drain pipe reversely flows into a room in a conventional drain trap.
3 is an exploded perspective view showing the overall structure of a drain trap according to the present invention.
FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3, showing the internal structure of the drain trap according to the present invention.
5 is a cross-sectional view of the drain trap according to the present invention.
FIGS. 6 and 7 show operation states of the drain trap according to the present invention; FIG. 6 shows a state in which the drainage induction cylinder is opened by the discharge sewage, and FIG. 7 shows the state in which the drainage induction cylinder is closed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. FIGS. 3 to 5 show the construction of the drain trap according to the present invention, and FIGS. 6 and 7 show operation states of the drain trap according to the present invention.

≪ Construction of drain trap according to the present invention >

The drain trap according to the present invention is installed to prevent the backflow of odor while guiding drainage to the bottom of a bathroom (toilet) or a veranda equipped with a drain pipe. As shown in FIGS. 3 and 4, a drain trap main body 100 is formed in a substantially rectangular shape and has a tube-coupling hole 110 extending downward at the center thereof, and an upper part of the drain trap body 100 A drainage guiding cylinder 400 assembled in a screw coupling manner to the tub-coupling opening 110 of the drainage trap body 100 to guide the drainage water, The upper end portion of which is raised and lowered at the lower end of the coupling port 110 and the wall surface 310 is provided with a drainage residual chamber 300 in which a drainage window 330 is drilled and a lower end portion of a wall surface 310 of the drainage residual chamber 300, And a lower surface 320 of the drainage retainer 300 is opened and closed to selectively open and close the lower end portion 420 of the drainage induction cylinder 400 by the load of the drainage water drained. And a coil spring 500 for elastically supporting the residual cylinder 300 in the upward direction. The detailed structure of each component is as follows .

4 and 5, The drain trap main body 100 is constructed so as to be embedded in the bottom of a bathroom (toilet) or a veranda equipped with a drain pipe P and to be connected to the drain pipe P. This is formed of a synthetic resin material, And is covered with a stainless steel cover material 120 excellent in corrosion resistance. The top surface of the drain trap body 100 is inclined downward from the edge to the center so as to facilitate drainage. The drain trap body 100 is formed at the center of the drain trap body 100 with a tube-coupling hole 110 extending downward. The tub-coupling member 110 is accommodated in the drain pipe P and a female screw 111 is formed on the upper inner wall of the drain pipe P for detachment and attachment of the drain guide pipe 400. In addition, an inward flange 112 is formed at the open lower end of the barrel-coupling opening 110 to support the lower end of the coil spring 500. The reference numeral 130 denotes a stepped step formed along the upper surface edge of the drain trap main body 100, and the filtering cover 200 can be securely seated inside thereof without being shaken.

The filter cover 200 is installed so as to cover the upper surface of the drain trap main body 100, and drain holes 210 are drilled in the whole area. Accordingly, the water drained to the bottom of the bathroom or the veranda flows into the drain pipe (P) through the drain holes (210) of the filter cover (200), and dirt such as hair is primarily filtered in the inflow process. The filter cover 200 is formed by press-working a stainless steel plate having excellent corrosion resistance and is disposed inside the step jaw 130 on the upper surface of the drain trap main body 100.

4 and 5, the drainage induction cylinder 400 is assembled by screwing an upper end portion 410 into the inner wall of the upper end of the barrel-coupling opening 110, 300). The lower end 420 of the drainage inducing cylinder 400 is extended to be positioned below the drain window 330 of the drainage retainer 300 so that the water flows downward from the lower end 420 of the drainage inducing cylinder 400 into a U- So that contaminants such as hair can be filtered and the backflow of odor can be blocked by the water remaining in the bottom of the sewage retainer 300 as described above. In order to remove the dirt trapped in the drainage induction cylinder 400, the drainage induction cylinder 400 can be pulled out in the unwinding direction.

The sewage retainer 300 is formed in a cup shape having an open top and a wall 310 and a bottom 320. The upper end of the drain trap 300 can be raised and lowered at the lower end of the barrel- And is deployed downward. An outward flange 340 is provided at an upper end of the sewage retainer 300 so that the coil spring 500 can be securely installed while preventing the detachment of the coil spring 500 from the barrel- A plurality of drainage windows (330) are formed at a predetermined height from the bottom surface (320) on the wall surface (310) of the sewage retainer (300). This structure is intended to prevent the backflow of odor from the drain pipe (P) side through the residual sewage if the drainage is not made any longer. The sewage retainer 300 is structured such that the lower end 320 of the retainer 300 can close the lower end 420 of the drainage inducing cylinder 400 by the elastic support force of the coil spring 500, To prevent the backflow of odor from the drain pipe (P) side while preventing the evaporation of the sewage that is present at the bottom. The center of the bottom surface 320 of the sewage retainer 300 is shaped as a convex dome upward.

The upper end of the coil spring 500 is hooked to the upper end portion (outward flange) 340 of the sewage remaining cylinder 300 and the lower end is hooked to the lower end inner wall (inward flange) 112 of the tub- The bottom surface 320 of the residual tub 300 is elastically supported in the upward direction so as to selectively open and close the lower end portion 420 of the drainage induction cylinder 400 by the load of the discharged sewage water . That is, if the bottom surface 320 of the sewage retainer 300 is not drained, the upper surface of the lower surface 320 of the sewage retainer 300 is raised by the elastic restoring force of the coil spring 500 and contacts the lower end 420 of the drain guide 400 to close it. On the other hand, when drainage is performed, the lower end 420 of the drainage inducing cylinder 400 is opened by pressing down the sewage retaining cylinder 300 while the load of the sewage overcomes the elastic force of the coil spring 500. Therefore, the discharged sewage is discharged to the drain pipe (P) through the drain guide pipe (400) and the drain window (330) of the drainage residual pipe (300). The opening and closing operation of the sewage retainer 300 is determined by the elastic force of the coil spring 500 which supports the sewage retainer 300 upward.

The O-ring member 600 is installed at the lower end of the wall surface 310 of the sewage retainer 300 so as to limit the maximum lift of the sewage retainer 300 due to the elastic support force of the coil spring 500 after the discharge of sewage is completed And are arranged in a band shape. That is, when sewage discharge is completed, the sewage retaining cylinder 300 is moved up and down until the o-ring member 600 is caught by the inward flange 112 of the cylinder-engagement opening 110. In the embodiment of the present invention, the O-ring member 600 is formed of an O-ring made of an elastic material and installed in a seating groove 350 formed in the shape of a band at the lower end of the wall surface 310 of the sewage retainer 300. Therefore, the clearance between the tub-coupling member 110 and the wall surface 310 of the sewage retainer 300 can be securely closed when the sewage retainer 300 is maximally moved up and down.

≪ Operation of drain trap according to the present invention and description of operation effect thereof >

Next, the operation of the drain trap constructed as described above and the operation and effect of the drain trap will be described with reference to FIGS. 6 and 7. FIG.

First, when the water is drained from the bottom of a bathroom or a veranda, the drained sewage collects in the drainage trap body 400 through the drainage holes 210 of the drainage cover 200 and flows out to the drainage induction cylinder 400.

6, when the sewage is introduced into the drainage induction cylinder 400, the sewage retaining cylinder 300 is lowered while compressing the coil spring 500 by the load of the drainage induction cylinder 400 and the lower end portion 420 of the drainage induction cylinder 400 ). Therefore, the sewage is drained to the drain pipe (P) through the drain pan (330) drilled in the wall surface (310) of the sewage remaining tank (300). Since the center of the bottom surface 320 of the sewage retainer 300 has a convex dome shape upward, drainage is smooth.

7, when the drainage is completed and most of the water in the drainage inducing cylinder 400 is discharged, the sewage retaining cylinder 300 is raised again by the elastic restoring force of the coil spring 500, And contacts the lower end 420 of the induction cylinder 400 to close it. Therefore, the communication between the drain pipe (P) and the inside of the room is fundamentally blocked, so that the back odor of the drain pipe (P) side can not flow backward. Particularly, since the lower end of the drainage inducing cylinder 400 is blocked, the sewage remaining in the bottom of the sewage retaining cylinder 300 can be maintained without evaporation, and the backflow of odor from the drainage pipe P side can be blocked.

In addition, the sewage retainer 300 is lifted and lowered until the O-ring member 600 is brought into close contact with the inward flange 112 of the barrel-engagement hole 110, whereby the barrel-engagement hole 110 and the sewage- 300 can be prevented completely from flowing into the drain trap as well as the odor of the drain pipe P and the ozone / wastewater which can flow back through the drain pipe P to the rainy season .

100. Drain trap body 110. Tongue-and-socket joint 111. Female thread
112 .. inward flange 120 .. cover material 130 .. stepped jaw
200 .. Draining cover 210 .. Drain hole 300 .. Drain remaining tank
310 .. wall 320 .. bottom 330 .. drain
340 .. outward flange 350 .. seat groove 400 .. drainage induction tube
410 .. top 420 .. bottom 500 .. coil spring
600 .. O-ring member P .. drain pipe

Claims (1)

1. A drain trap having a backflow prevention function while being installed on a floor of a bathroom or a veranda equipped with a drain pipe (P) and guiding the drainage water;
The drain trap comprising:
A drain trap main body 100 having a tub-engaging hole 110 extending downward at a center thereof so as to be inserted into the drain pipe P and having an upper surface inclined downward from an edge toward a center;
And the upper end portion 410 is assembled in a threaded manner on the inner wall of the upper end of the tube-coupling hole 110 of the drain trap body 100, and the lower end portion 420 is assembled in the tub- A drain guide pipe 400 extending to the inner center of the lower part of the drain pipe 110 and guiding drainage;
The upper end of the wall surface 310 is disposed on the lower end of the tub-coupling hole 110 of the drain trap body 100 so as to be raised and lowered A plurality of drainage windows 330 are formed on the central portion of the wall 310 and the remaining drainage sump 300 is filled with sewage having a predetermined height in a space lower than the height of the drainage windows 330;
The upper end is hooked on the upper end outward flange 340 of the sewage retainer 300 and the lower end is hooked on the lower end inner wall inward flange 112 of the tub-coupling hole 110, A coil spring 500 for elastically supporting the sewage remaining cylinder 300 in the upward direction so that the bottom surface 320 of the sewage retainer 300 selectively opens and closes the lower end 420 of the drainage inducing cylinder 400, and;
The water discharge tube 300 is provided at the lower end of the wall 310 of the drainage tank 300 with a seating groove formed in the shape of a strip so that the discharge of the sewage can be restricted and the maximum lifting / An O-ring member 600 provided in the O-ring 350 and engaged with the inward flange 112 of the O-ring 110; Wherein the drain trap has a backflow prevention function.

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