JP2005133314A - Drainage trap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage trap capable of cleanly maintaining a seal water section, at the same time, having difficulty in making clogs and facilitating the cleaning. <P>SOLUTION: A communication opening section 8 communicating with a sewage side is provided to the circumferential wall 7 of a trap body 5. A seal water cylinder 6 opening at both up and down ends is inserted inside of the trap body 5 from above. The outer circumference section of the upper part of the seal water cylinder 6 is detachably mounted to a part located higher than the communication opening section 8 of the circumferential wall 7 of the trap body 5. The lower end of the seal water cylinder 6 is located on a position lower than the communication opening section 8 and on a position higher than the upper surface of the bottom wall 15 of the trap body 5. A gap B is formed between the upper surface of the bottom wall 15 of the trap body 5 and the lower end of the seal water cylinder 6. A commutating projection 22 formed so as to become a projection in an upper part and make the projected surface 22a gradually become a small diameter as it goes to the upper side is provided to a site opposed to a lower end opening 12 of the seal water cylinder 6 of the bottom wall 15 of the trap body 5. A corner section 24 formed of the circumferential wall 7 of the trap body 5 and the bottom wall 15 is formed in a circular-arc shape. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is provided on the bottom and floor of a water tank of household piping equipment such as sinks of sinks, wash bowls of wash basins, floors of water tanks such as toilets, floors of bathrooms and toilets, etc., and blocks odors from the sewage side. It relates to a drain trap.

  As a conventional drain trap, as shown in FIG. 4, there is an S-type drain trap 42 formed by bending a part of a drain pipe 41 connected to a drain port 40 of a household piping facility into an S shape, In this way, a part of the drainage pipe 41 is curved in an S shape to form a sealed water portion 43 in which drainage is collected when the household piping equipment is not used, and the water stored in the sealed water portion 43 is used for the sewage side. The odor was prevented from diffusing to the tank body or the floor (see, for example, Patent Document 1).

  By the way, since water is stored in the sealing part 43 of the drain trap 42, bacteria, fungi, microorganisms and the like easily propagate, and the propagation of these microorganisms causes slimy and bad odor in the sealing part. Therefore, it is necessary to periodically clean the sealing portion 43 of the drain trap 42, but the sealing portion 43 shown in Patent Document 1 is formed by curving a part of the drain pipe 41 in an S shape. Therefore, it is very difficult to put a hand in the S-folded portion of the drain pipe 43 and clean it with a cleaning tool such as a sponge, and cleaning the sealing portion 43 is very troublesome. .

  In addition to the above, a drain trap 45 as shown in FIG. 5 is also known. The drain trap 45 is formed by penetrating a straight tubular drain cylinder 48 communicating with sewage through a bottom wall 47 of a bottomed cylindrical section 46 having an open upper end to form a trap body 49, and draining the sealed cup 50. Removably attached to the trap body 49 so as to cover the upper end of the cylindrical portion 48, thereby forming a sealed portion 53 on the outer peripheral side of the lower portion of the bottomed cylindrical portion 46. According to the configuration, after the sealing cup 50 is taken out from the upper end opening 51 of the trap body 49, the bottom wall 47 and the peripheral wall 52 of the bottomed cylindrical portion 46 and the outer peripheral side surface of the drainage cylinder portion 48 are cleaned with a cleaning tool such as a sponge. In addition, it is possible to clean the sealed water cup 50 that has been taken out, which is somewhat easier to clean than the drain trap 42 shown in Patent Document 1 above.

However, in the conventional example shown in FIG. 5, the straight tubular drainage cylinder portion 48 protrudes greatly above the bottom wall 47 of the bottomed tubular portion 46, and the peripheral wall 52 of the bottomed tubular portion 46 and It is difficult to clean the sealed portion 53 that is a narrow space formed by the bottom wall 52 and the drain tube portion 48, and further, formed by the drain tube portion 48 and the bottom wall 47 of the bottomed tubular portion 46. Since the corner portion 54 is a right angle and the corner portion 55 formed by the peripheral wall 52 and the bottom wall 47 of the bottomed tubular portion 46 is formed at a right angle, it is very difficult to clean the corner portions 54 and 55. It was. In addition, since the corner portions 54 and 55 are formed at right angles in this way, stagnation occurs in the vicinity of the corner portions 54 and 55 during drainage, and the drainage does not flow smoothly, whereby both corner portions 54 and 55 ( In particular, slimming and dirt in the downstream corner portion 54) are likely to accumulate, and solid matter such as dust having a relatively high density accumulates, and in some cases, the sealing portion 53 may be clogged by this solid matter. In addition, for this purpose, the sealing portion 53 must be frequently cleaned.
Japanese Utility Model Publication No. 6-87474

  The present invention has been invented in view of the above-mentioned conventional problems, and it is difficult for slime and dirt due to propagation of microorganisms and the like to adhere to the sealed water part, and solids such as dust accumulate in the sealed water part. It is an object of the present invention to provide a drainage trap that can prevent a sealed water portion from being clogged with an object and that can be easily cleaned.

  In order to solve the above problems, a drain trap according to the present invention is provided with a communication port portion 8 communicating with sewage on a peripheral wall 7 of a trap body 5 formed in a container shape with an upper end opened, and upper and lower ends in the trap body 5. Is inserted from above, and the outer peripheral portion of the upper portion of the water seal tube 6 is detachably attached to a portion of the peripheral wall 7 of the trap body 5 that is located above the communication port portion 8. The lower end of the trap body 5 is arranged lower than the communication port 8 and higher than the upper surface of the bottom wall 15 of the trap body 5, and a gap B is formed between the upper surface of the bottom wall 15 of the trap body 5 and the lower end of the water seal tube 6. And a rectifying protrusion formed on the bottom wall 15 of the trap body 5 facing the lower end opening 12 of the sealing cylinder 6 so that the protrusion protrudes upward and the protrusion 22a gradually decreases in diameter toward the upper side. 22, and the peripheral wall 7 and the bottom wall 15 of the trap body 5 Thus the corner 24 formed, characterized in that formed by an arc shape.

  In this way, the rectifying protrusion 22 is formed so as to protrude upward at a portion of the bottom wall 15 of the trap body 5 facing the lower end opening 12 of the sealing cylinder 6 so that the protruding surface 22a gradually becomes smaller in diameter toward the upper side. The drainage flown out from the lower end opening 12 of the sealing tube 6 can be rectified by the rectifying protrusions 22 during drainage and smoothly flown to the outer peripheral side of the trap body 5. By forming the corner portion 24 in an arc shape, the drainage flowing from the rectifying projection 22 side to the outer peripheral side of the trap body 5 by the arc-shaped corner portion 24 is rectified and smoothly flowed to the communication port portion 8 side. As a result, the drainage that has flowed into the gap B from the lower end opening of the sealing cylinder 6 flows smoothly without causing turbulent flow up to the communication opening 8, and as a result, the trap body 5 and the sealing body 5 are sealed. The sealing part 10 formed in the lower part of the trap body 5 by the cylinder 6 is less likely to get slimy and dirty due to the propagation of microorganisms, etc., and solid matter such as relatively high-density dust collects. It is possible to prevent the portion 10 from being clogged and to reduce the frequency of cleaning the drain trap 1. Further, by attaching the sealing cylinder 6 to the trap body 5 in a detachable manner, the trap body 5 and the sealing cylinder 6 can be easily cleaned, and in addition, the corner portion 24 of the trap body 5 is formed in an arc shape. Therefore, cleaning of the corner portion 24 is facilitated, and only the small rectifying protrusion 22 formed so that the protruding surface 22a gradually decreases in diameter toward the upper side of the bottom wall 15 of the trap body 5 protrudes. The bottom wall 15 of the trap body 5 can be easily cleaned.

  Moreover, it is also preferable to form the lower end part of the said sealing cylinder 6 so that the internal diameter may expand toward the lowest end side. In this way, by forming the lower end portion of the sealed water cylinder 6 so that the inner diameter thereof increases toward the lowermost end side, the drainage flowing out from the lower end opening 12 of the sealed water tube 6 is rectified by the lower end portion of the sealed water cylinder 6. The trap body 5 can flow more smoothly on the outer peripheral side.

  The sealed cylinder 6 includes a small-diameter cylindrical portion 13 and a large-diameter cylindrical portion 14 formed such that the lower end is connected to the upper end of the small-diameter cylindrical portion 13 and the diameter increases from the lower end to the upper side. It is preferable that the corner portion 17 formed by the large-diameter cylindrical portion 14 and the small-diameter cylindrical portion 13 is formed in an arc shape.

  Thus, the volume of the trap body 5 can be reduced by forming the sealing cylinder 6 in a funnel shape, and in addition, a corner portion formed by the large diameter cylindrical portion 14 and the small diameter cylindrical portion 13 of the funnel-shaped sealing cylinder 6. By forming 17 in an arc shape, drainage in the sealed cylinder 6 and drainage in the space A formed between the trap body 5 and the small diameter cylinder portion 13 can be smoothly flowed during drainage.

  In the present invention, it is difficult for slime and dirt due to the propagation of microorganisms and the like to adhere to the sealed water part, and it is possible to prevent the sealed water part from collecting solid matter such as relatively high density dust or clogging the sealed water part. In addition, the frequency of cleaning the drain trap can be suppressed, and in addition, the cleanability of the drain trap can be improved.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. A drain trap 1 of this embodiment shown in FIG. 1 has a trap body 5 attached in a state of being inserted into a drain port 4 formed in a bottom wall portion 3 of a sink 2, and a funnel shape detachably attached to the trap body 5. The sealed water bottle 6 is provided.

  The trap body 5 is formed in a bottomed circular container shape having an open upper end, and a communication port portion 8 that opens to one side and communicates with sewage is provided at a part of the circumferential portion of the peripheral wall 7. Yes. The communication port portion 8 is connected in communication with the upstream end portion of the connection tube portion 9 whose downstream end portion is detachably connected to a sewage side pipe (not shown). It inclines so that it may be located below the downstream side (tip).

  The outer peripheral portion of the upper end (or the upper portion) of the sealing tube 6 is detachably attached to the portion of the trap body 5 located above the communication port portion 8 of the peripheral wall 7 without any gaps. A sealed portion 10 for storing water shown in FIG. 1 is formed at a portion of the trap body 5 and the sealed tube 6 located below the portion 8. The mounting of the sealing cylinder 6 will be described in detail later.

  The sealing cylinder 6 has an upper end opening 11 that opens upward and a lower end opening 12 that opens downward. Specifically, the sealing cylinder 6 is located above the space A between the small-diameter cylindrical portion 13 disposed in the center portion of the trap body 5 in the plan view and the small-diameter cylindrical portion 13 and the peripheral wall 7 of the trap body 5. The lower end opening 13a of the small-diameter cylindrical portion 13 which is composed of an upper large-diameter cylindrical portion 14 which is closed without a gap and whose main portion is formed in a straight tube shape is used as the lower end opening 12 of the above-mentioned sealed water cylinder 6, and The upper end opening 14 a is used as the upper end opening 11 of the above-described sealed water bottle 6.

  The lower end of the small-diameter cylindrical portion 13 is disposed lower than the communication port portion 8 and higher than the upper surface of the bottom wall 15 of the trap body 5, and the upper surface of the bottom wall 15 of the trap body 5 and the lower end of the sealing tube 6 A gap B is formed between the two. Further, the lower end portion of the small-diameter cylindrical portion 13 is formed in a trumpet shape so that the inner diameter increases toward the lowermost end side.

  The lower end of the large diameter cylindrical portion 14 is connected to the upper end of the small diameter cylindrical portion 13 in communication. The large-diameter cylindrical portion 14 is inclined so as to gradually increase in diameter as it goes upward from the lower end, and the upper end portion is an arcuate curved portion 16 that protrudes outward. A corner portion 17 formed by the large-diameter cylinder portion 14 and the small-diameter cylinder portion 13, which is a connection portion between the large-diameter cylinder portion 14 and the small-diameter cylinder portion 13, is curved in an arc shape projecting inwardly. The large-diameter cylindrical portion 14 and the small-diameter cylindrical portion 13 are smoothly continuous.

  For example, as shown in FIG. 1, the sealing cylinder 6 is attached to the trap body 5 by providing a stepped portion 18 at a portion located above the communication port portion 8 of the peripheral wall 7 of the trap main body 5 and a peripheral wall 18. A projecting piece 19 projecting inwardly is provided at a portion located slightly above the step portion 18, and the step portion 18 and the projecting piece 19 form a locking groove 20 in the peripheral wall 7 of the trap body 5. A locking piece 21 that protrudes outward is provided at the upper end portion of the sealing cylinder 6 (that is, the upper end portion of the arcuate curved portion 16 of the large-diameter cylindrical portion 14), and the locking piece 21 is placed on the step portion 18. After the arrangement, the sealing cylinder 6 is rotated to insert the locking piece 21 into the locking groove 20, and a seal member (not shown) such as rubber or packing is provided between the locking piece 21 and the locking groove 20. ). The means for attaching the sealing cylinder 6 to the trap body 5 is not limited to this. For example, the mounting step portion is arranged around the portion located above the communication port portion 8 of the peripheral wall 7 of the trap body 5. And a flange that protrudes outward is formed at the upper end of the sealing tube 6, and the flange is mounted on the mounting step of the trap body 5 without a gap through a seal member. In addition, without providing the sealing member as described above, the outer peripheral portion of the upper end of the water seal tube 6 may be detachably attached in a state of being in close contact with the inner peripheral portion of the trap body 5, that is, the peripheral wall 7 of the trap body 5. As long as there is no gap between the inner peripheral portion of the sealing tube and the outer peripheral portion of the upper end portion of the sealing tube 6, the sealing tube 6 may be detachably attached to the trap body 5.

  The central portion of the bottom wall 15 of the trap body 5, that is, the portion facing the lower end opening 12 of the water seal cylinder 6 is provided with a rectifying protrusion 22 protruding upward, and the protruding end of the rectifying protrusion 22 is the water seal cylinder 6. It is located below the lower end of. The straightening protrusion 22 is formed by bending a part of the bottom wall 15 of the trap body 5 upward, and the protrusion 22a has a mountain shape with a curved top surface as shown in FIG. It is formed so as to be a protruding surface. Note that the protrusion 22a of the rectifying protrusion 22 is not limited to the above, and is, for example, a hemispherical curved surface or a shape obtained by cutting a part of the spherical curved surface (in this case, a surface cut smaller than the hemispherical curved surface) Etc.), and all of the projecting surface 22a may be curved, that is, the projecting surface 22a may be formed so as to have a smaller diameter toward the upper side. The corner portion 23 formed by the protruding surface 22a and the upper surface of the bottom wall 15 of the trap body 5 is curved so that the lower end portion of the protruding surface 22a and the bottom wall 15 of the trap body 5 are smoothly continuous. It may be bent or bent.

  Further, the corner portion 24 formed by the bottom wall 15 and the peripheral wall 7 of the trap body 5 is curved in an arc shape protruding outward, so that the bottom wall 15 and the peripheral wall 7 of the trap body 5 are smoothly continuous. ing. Further, the upper end of the arc-shaped corner portion 24 is located above the lower end of the water-sealing tube 6. It is assumed that the upper surface of the bottom wall 15 of the trap body 5 is formed so that all portions except the corner portion 24 and the rectifying protrusion 22 are horizontal flat surfaces.

  In the figure, reference numeral 25 denotes a net cage disposed in the upper part of the trap body 5, and this net cage 25 is mounted on a net cage 25 formed in a portion located above the step portion 18 of the peripheral wall 7 of the trap body 5. An upper end flange portion 27 that is an upper end outer peripheral portion of the net cage 25 is placed on the placing step portion 26 so as to be detachably attached to the trap body 5. In the figure, reference numeral 28 denotes a filter for preventing small items such as a spoon from falling into the sealed portion 10 and preventing the sealed portion 10 from being seen from above. It is attached to the upper part in the small-diameter cylindrical part 14 located above.

  When the drain trap 1 is attached to the drain port 4 formed on the bottom wall 3 of the sink 2, for example, a flange 29 provided around the upper end of the peripheral wall 7, which is the upper end outer periphery of the trap body 5, is provided on the drain port 4. The flange portion 29 is fixed to the peripheral portion of the drain port 4 by a mounting nut 31 while being placed on the step portion 30 for placing the trap body 5 formed on the peripheral portion. And the drainage pipe of the sewage side is connected to the downstream end part of the connecting pipe part 9 of the trap body 5 detachably attached to the drainage port 4 in this way, and the construction of the drainage trap 1 is completed.

  With this drain trap 1, when the sink 2 is not used, water can be stored in the lower sealing portion 10 in the trap body 5, and the stored water can prevent the odor from being diffused from the sewage side.

  The drainage when the sink 2 is used flows from the upper end opening 32 of the trap body 5 and is received by the upper end opening 11 of the sealing cylinder 6 as shown by the arrow in FIG. After flowing into the gap B from the lower end opening 12 and the downward flow is rectified to the flow on the outer peripheral side (peripheral wall 7 side) by the rectifying protrusion 22, the flow flows along the bottom wall 15 of the trap body 5. The water that has flowed to the outer peripheral side of the main body 5 is rectified again at the corner portion 24 to become an upward flow, flows through the space A to the communication port portion 8 side, and from the communication port portion 8 through the connection pipe portion 9. It flows out to the sewer side.

  Here, as described above, at the portion of the bottom wall 15 of the trap body 5 that faces the lower end opening 12 of the sealing cylinder 6, a ridge is formed so that it protrudes upward and its protruding surface 22 a gradually decreases in diameter toward the upper side. By providing the projections 22, the drainage flowing out from the lower end opening 12 of the sealing cylinder 6 can be rectified by the rectifying projections 22 during drainage (see FIG. 2C) and smoothly flown to the outer peripheral side of the trap body 5. The portion where the drainage is stagnant like the portion c in the comparative example shown in FIG. 3 is eliminated, and in addition, the corner portion 24 of the trap body 5 is formed in an arc shape. The flowing drainage can be smoothly flowed to the communication port 8 side (see FIG. 2D), and the portion where the drainage is stagnant like the portion d of the comparative example shown in FIG. 3 is eliminated. From 12 The drainage water flowing into the space B flows smoothly up to the communication port 8, and as a result, the sealing portion 10 (particularly the trap body 5) formed in the lower portion of the trap body 5 by the trap body 5 and the sealing cylinder 6. The corner portion 24) is less susceptible to slimming and dirt due to the propagation of microorganisms. Further, in the present embodiment, the upper end portion of the large-diameter cylindrical portion 14 is formed as an arcuate curved portion 16 that protrudes outward, and the diameter of the large-diameter cylindrical portion 14 of the sealed water tube 6 gradually increases as it goes upward from the lower end. Since the sealing tube 6 is formed in a funnel shape that does not obstruct the flow of drainage, the upper end of the sealing tube 6 is compared with the sealing tube 6 as in the comparative example shown in FIG. The drainage flowing in from the opening 11 smoothly flows to the gap B located below the lower end opening 12, and in addition, the drainage flowing through the space A between the small-diameter cylindrical portion 13 and the peripheral wall 7 of the trap body 5 is also smooth. (Refer to FIG. 2E and the comparative example e in FIG. 3), the drainage that has flowed into the gap B from the lower end opening 12 of the sealing tube 6 flows more smoothly until the communication port 8 is reached. .

  When cleaning the drain trap 1, the sealing tube 6 is taken out from the upper end opening 11 of the trap body 5, and thereafter, the hand is inserted through the upper end opening 32 of the trap body 5 to remove the bottom wall 15 and the peripheral wall 7 of the trap body 5. Clean with a cleaning tool such as a sponge, or clean the sealing tube 6 taken out from the trap body 5 with a cleaning tool. Here, since the corner portion 24 of the trap body 5 is formed in an arc shape as described above, the corner portion 24 can be easily cleaned. Further, the bottom wall 15 of the trap body 5 has the conventional structure shown in FIG. Since there is no straight tube-like projecting portion like the drainage tube portion 48 of the above, only the small rectifying projection 22 formed so that the projecting surface 22a gradually becomes smaller in diameter toward the upper side projects, so that the trap body The cleaning of the bottom wall 15 of 5 becomes easy. In this embodiment, the top surface of the protrusion 22a of the rectifying protrusion 22 is particularly curved, so that a cleaning tool such as a sponge is not caught during cleaning, and the trap body 5 can be further easily cleaned. Moreover, since the sealing cylinder 6 is formed in the funnel shape which does not obstruct the flow of drainage as mentioned above, and there is no bent part, cleaning of the sealing cylinder 6 becomes easy and the cleaning property of the drain trap 1 can be improved by the above. .

  In this embodiment, the drain trap 1 is provided on the bottom wall 3 of the sink sink 2 of the sink. However, the present invention is not limited to this, and the drain trap 1 may be the bottom or floor of other household piping equipment. It may be provided.

It is an example of an embodiment of the invention and is a sectional view showing a state where a drain trap is attached to a drain outlet. It is explanatory drawing explaining the flow of drainage same as the above. It is explanatory drawing which shows the comparative example of a drain trap. It is explanatory drawing which shows an example of the conventional drain trap. It is explanatory drawing which shows the other example of the conventional drain trap.

Explanation of symbols

A space B gap 1 drain trap 5 trap body 6 sealed cylinder 7 peripheral wall 8 communication port 10 sealed portion 12 bottom opening 13 small diameter cylindrical portion 14 large diameter cylindrical portion 15 bottom wall 17 corner portion 22 rectifying projection 22a protruding surface 24 corner Part

Claims (3)

  Provided with a communication port that communicates with sewage on the peripheral wall of the trap body formed in a container shape with an upper end open, and inserted a sealing cylinder with upper and lower ends into the trap body from above. Removably attached to a portion of the peripheral wall of the trap body that is located above the communication port, and the lower end of the sealing tube is disposed lower than the communication port and higher than the upper surface of the bottom wall of the trap body. A gap is formed between the upper surface of the bottom wall of the trap body and the lower end of the sealing cylinder, and protrudes upward at a portion of the bottom wall of the trap body facing the lower end opening of the sealing cylinder, and the protruding surface is on the upper side. A drainage trap characterized in that a rectifying projection formed so as to gradually become smaller in diameter is provided, and a corner portion formed by a peripheral wall and a bottom wall of the trap body is formed in an arc shape.   2. A drain trap according to claim 1, wherein the bottom end of the sealed water cylinder is formed such that its inner diameter increases toward the lowest end.   The sealed cylinder has a funnel-like shape composed of a small-diameter cylindrical portion and a large-diameter cylindrical portion formed such that the lower end communicates with the upper end of the small-diameter cylindrical portion and increases in diameter as it goes upward from the lower end. The drain trap according to claim 1 or 2, wherein a corner portion formed by a large-diameter cylindrical portion and a small-diameter cylindrical portion is formed in an arc shape.

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