JPH0911U - Small caliber with U trap - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To increase the swing angle of a U-trap having a small diameter pit with a U-trap. SOLUTION: A drainage flow path 5 and an outflow portion 8 of one U trap 6 are juxtaposed at the bottom of a small-diameter PVC basin via a weir 4, and the outflow portion 8 is placed at the bottom via a bush 14 for diameter reduction. Install on. Therefore, the pipe diameter D of the U trap 6 becomes small, and the distance L between the pair of U-shaped rising pipes (8, 9) of the U trap 6 becomes large. Therefore, even if the U trap 6 is swung, It becomes difficult to contact the outer surface of the main body 1, and the angle becomes large, which is convenient for construction.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a small-diameter basin with a U-trap.

[0002]

[Prior art and its problems]

 Recently, due to the narrowing of residential land, small diameter pits made of PVC have come to be used. Also, a trap rod that incorporates a trap function such as a U trap into this small-diameter rod is useful.

Therefore, the present applicant has also proposed a trap box as shown in FIGS. 2 and 3 (see Japanese Utility Model Laid-Open No. 63-121673).

That is, in these drawings, the cleaning port pipe receptacle 2 is opened upward in the container body 1 so that a cleaning mouth pipe (not shown) can be inserted into the receptacle body 2. 1 is provided with upper and downstream drain pipe receptacles 3 and 3 which are opened in the horizontal direction, and the bottom of the basin body 1 is flat with the axes of these drain pipe receptacles 3 and 3. In order to project an overflow dam 4 slightly higher than the axis of the drainage port 3 in a row, form a drainage channel 5 on one side of this dam 4, and join a U trap 6 to the other side. The trap receiving port 7 is opened downward. The outflow port 8 of the U trap 6 is inserted into the trap receiving port 7 and joined as a port, and the DT joint 10 is joined to the inflow port 9 of the U trap 6. Therefore, the center points of the receiving port 2 and the trap receiving port 7 are juxtaposed on a line orthogonal to the drain pipe flow path 5.

The U trap 6 has the following structure in order to be rotatable with respect to the trap receiving port 7. That is, the lower bush 11 and the O-ring 12 are loosely fitted into the outlet 8 of the U trap 6 in advance from the opening side thereof, and then the upper bush 13 is attached to the outer periphery of the outlet 8 of the U trap 6. Adhesive bonding. Then, the adhesively joined upper bush 13 is rotatably fitted into the trap receiving port 7, and then the lower bush 11 is adhesively joined below the trap receiving port 7 via the O-ring 12. To prevent it from slipping out.

Therefore, the U trap 6 swings around the trap receiving port 7 as shown by the arrow with the outer peripheral surface of the upper bush 13 and the inner peripheral surface of the lower bush 11 as sliding surfaces. Therefore, since the U trap 6 can be swung, the piping work in the sewer system can be installed in any direction, and even if there is a direction error in the work, the error can be absorbed.

However, since the size of the drainage pipe of the general sewerage system varies depending on the household, the size of the drainage pipe to be installed is not fixed. On the other hand, the size of the trap basin described above is not flexible. You will need to use a larger one than necessary. Therefore, it may be possible to separately produce a small trap barrel, but in the case of a small trap barrel, the inlet for the sweeping pipe will inevitably have a small diameter, and the inspection and cleaning will be performed only on the rod with the U trap. There was a risk that the

Moreover, since the diameter of the U trap 6 is slightly smaller than that of the drain pipe flow path 5, the U trap 6 interferes with the outer surface of the cell main body 1 during the swinging and swinging operation to increase the swinging angle of the U trap 6. Can not.

[0009]

[Means for Solving the Problems]

 Therefore, the present invention has been devised to solve such an inconvenience. The gist of the present invention is to provide an overflow dam at the approximately center of the bottom of a small-diameter pit made of synthetic resin. One U-trap outlet having a drainage channel formed on the other side and having an opening upward on the other side and having a center juxtaposed with the center of the small-diameter sac cleaning port on a line orthogonal to the drainage channel. In a small-diameter basin in which the U-trap can be swung freely with respect to the basin body by rotatably arranging the parts, a downward opening is made at the bottom of the basin body to which the outlet of the U-trap is joined. 1 trap receiving opening is provided, and the outer circumference of the large diameter side of the diameter-reducing bush which is rotatable and prevented from slipping off is fitted into the first trap receiving opening. Then, a second trap receiving port is formed on the inner circumference of the small diameter side of the diameter reducing bush. The diameter of the U trap is reduced by adhering the outlet port of the U trap to the second trap receiving port, and the distance between the pair of U-shaped rising pipes is increased so that the U trap is increased. It is a small-diameter stake equipped with a U trap, which is characterized by a larger swing angle.

[0010]

【Example】

 The structure of the present invention, together with its operation, will be described in detail with reference to the embodiments shown in the accompanying drawings. FIG. 1 is a sectional view of an essential part of an embodiment of the present invention, and common portions in FIGS. 2 and 3 showing a conventional example are denoted by the same reference numerals and are not shown.

In this embodiment, in place of the above-mentioned conventional upper bush 13 between the first trap receiving port 7 ′ of the small-diameter stub body 1 and the outlet port 8 of the U-trap 6 in FIG. The bush 14 for diameter reduction is interposed.

The diameter-reducing bush 14 is a concentric double ring, and the upper part of the outer circumference 15 on the large diameter side is rotatably fitted to the first trap receiving port 7 ′ and the inner circumference on the smaller diameter side is formed. A second trap receiving port 16 having a reduced diameter is formed. The lower portion of the outer circumference 15 on the large diameter side is flat, and the O-ring 12 and the lower bush 11 'are externally fitted therein. The axial length of the first trap receiving port 7 ′ is larger than the axial length of the second trap receiving port 16. The O-ring 12 may be packing.

The large-diameter side outer periphery 15 and the second trap receiving port 16 are connected to each other on the upper side thereof, and between them, there is a meat squeezing hole (a wall thickness is made uniform so that formability is improved). A doughnut-shaped space 17 is formed for the purpose of improving. A funnel surface 18 and a step portion 19 are formed on the connected upper side portion, and the step portion 19 is in contact with the stopper of the first trap receiving port 7 '.

Next, the assembly of the first embodiment will be described. The upper part of the outer periphery 15 of the diameter-reducing bush 14 is rotatably fitted into the first trap receiving port 7 ', and The O-ring 12 and the lower bush 11 'are sequentially fitted under the outer circumference 15 on the large diameter side. An adhesive is applied to the outer circumference of the lower bush 11' so that the first trap receiving port 7 ' Stick to the inner surface. That is, the lower bush 11 'is adhesively bonded to the first trap receiving port 7'to prevent the lower bush 11' from coming off. As a result, the diameter-reducing bush 14 is rotatably inserted into the first trap receiving port 7'and can be prevented from coming off. Next, an adhesive is applied to the outer periphery of the outlet port 8 of the U trap 6, and the U trap 6 is fitted and fixed to the second trap receiving port 16 of the diameter reducing bush 14. Therefore, the U trap 6 can swing with respect to the main body 1 with the upper and lower sides of the outer circumference 15 on the large diameter side as sliding surfaces.

Since the U trap 6 is attached through the diameter-reducing bush 14, the U trap 6 has a smaller diameter (D) than the U trap of FIG. )can do.

Moreover, the distance L between the outlet 8 and the inlet 9 of the U trap 6, that is, the distance L between the U-shaped rising pipes of the U trap 6 is larger than that of the U trap of FIG. I am saying.

As a result, the swing angle of the U trap 6 of this embodiment can be increased to make the construction more convenient.

[0018]

[Effect of the invention]

 According to the present invention, the small-diameter basin has the first trap receiving port at the bottom thereof and the second trap receiving port provided on the diameter-reducing bush joined to the receiving port. Two types of U-traps can be used, and more types can be provided by preparing multiple types of the above-mentioned diameter-reducing bushes that have second trap receiving ports of different sizes. Different U traps can be used, which is convenient for construction of various sewer systems.

In addition, since the common sluice main body is used, the receptacle for the cleaning port pipe can secure a certain opening area, and the possibility of the grip is large, because it is a small diameter sluice with a U trap. It is convenient for inspection and cleaning, and since it can be produced using the same molding die, it saves expensive die cost, which in turn reduces production cost, and makes it possible to use an inexpensive small-diameter pit. Can be provided.

Moreover, since the outlet of the U-trap is adhesively bonded to the inner circumference of the small-diameter side of the reduced-diameter bush, an O-ring or the like is not stored and the U-trap itself is an existing mass-produced product. Can be used, and in combination with the low cost of the main body of the container, it is possible to provide a more inexpensive small diameter container with a U trap.

In particular, the outer circumference of the large diameter side of the diameter reducing bush, which is rotatable by interposing a ring-shaped seal, is fitted in the first trap receiving port, and the small diameter of the diameter reducing bush is small. Since the outlet of the U trap is adhesively bonded to the inner circumference of the side, the swinging and sliding surface of the U trap serves as the first trap receiving port on the large diameter side to reduce the sliding resistance. As a result, the direction determination work by swinging the head can be done lightly.

In particular, since the U trap 6 is attached via the diameter-reducing bush 14, the diameter of the U trap is reduced (D) with respect to the diameter D1 of the drainage pipe flow path 5, and a pair of U-shaped rising pipes is used. Since the interval L of is large, the swing angle of the U trap 6 can be increased. As a result, the construction of the sewer system can be made more convenient.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of an embodiment of the present invention.

FIG. 2 is a sectional view of a conventional example.

FIG. 3 is a plan view of FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Masu body, 4 ... Overflow dam, 5 ... Drain pipe flow path, 6 ...
U trap, 7 '... 1st trap receiving port, 8 ... Outflow port part, 12 ... O ring, 14 ... Reducing diameter bush, 16 ... 2nd trap receiving port

Claims (1)

[Utility model registration claims] 1. A drainage channel is provided in the bottom of a small-diameter slab made of synthetic resin at approximately the center of the overflow channel, a drainage channel is formed on one side of the channel, and the drainage channel is opened upward on the other side. A small U-trap that can be swung freely with respect to the main body of the U-trap by rotatably providing the outlet of one U-trap having a center juxtaposed with the center of the small-diameter cleaning port on a line orthogonal to In the aperture caliber, a first trap receiving opening opened downward is provided at the bottom of the basin body to which the outlet of the U trap is joined.
The outer circumference of the large-diameter side of the diameter-reducing bush, which is rotatably intervened by a ring-shaped seal and is prevented from coming off, is fitted into the first trap receiving port, and the inside of the small-diameter side of the diameter-reducing bush is inserted. By forming a second trap receiving port on the circumference and adhering the outlet part of the U trap to the second trap receiving port, U
A small-diameter stake equipped with a U-trap characterized in that the swing angle of the U-trap is increased by making the trap smaller in diameter and increasing the distance between a pair of U-shaped rising pipes.