JPH0227015Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a water control valve installed in water pipes.
This invention relates to a screw type water control valve housing provided for protection and operation.

The conventionally used screw-type water control valve housing is
As shown in FIG. 1, a lid 1 which can be opened and closed is placed in the upper opening, and a generally disc-shaped lid is fitted in a drop-down manner, and an upper cylinder 2 has a cylindrical part with a screw formed at the lower part; A lower cylinder having a cylindrical part with a lower opening opening in the shape of a latch, the latch part having a shape to protect the water control valve part of the water supply, and a cylindrical part provided with a protrusion on the upper part to be screwed into the screw of the upper cylinder 2. When the bottom part of the lower cylinder 3 is located at the water control valve part of the water supply, the lid 1 of the upper opening of the upper cylinder 2 is aligned with the ground surface. The structure is such that the screw engagement of the lower cylinder 3 can be adjusted. Such water control valve housings are normally installed on roads where water pipes are buried, and when they are installed, the water control valve housing is slightly higher than the road surface, but over many years The water control valve housing may sink and become depressed, and when road pavement is repaired, the water control valve housing may become lower.
It becomes necessary to adjust the height of the water control valve housing. As mentioned above, the water control valve housing has an upper cylinder and a lower cylinder that are screwed together, so the height can be easily adjusted by rotating the upper cylinder, but once buried, it is made of cast iron. , the surface has fine irregularities, and even with anti-rust treatment, rust cannot be avoided.
The surrounding earth and sand and the paving material stuck together, making it impossible to easily adjust the height by rotating the upper cylinder, and it was necessary to dig out the upper cylinder of the water control valve housing to adjust the height.

The present invention was devised to solve such drawbacks, and will be explained according to the embodiment shown in the drawings.
The cylindrical part of the cast iron water control valve housing into which the upper cylinder 1 and the lower cylinder 2 are screwed together is surrounded by a cylinder 4 made of synthetic resin in the form of a sheath.

The synthetic resin cylinder 4 may or may not be fixed to the outer cylinder into which the water control valve housing is screwed. That is, in the water control valve housing as shown in FIG. 1, it may be fixed to the upper part of the upper cylinder 2 by screws or by heat shrinking. Further, the synthetic resin cylinder 4 is not particularly specified, and a commonly manufactured vinyl chloride pipe with a smooth surface may be cut to the required length and used.

Since the present invention is constructed as described above, after installing the water control valve housing in a predetermined position and adjusting the height, the cylinder 4 made of synthetic resin is positioned at the upper part of the cylinder part. When it is necessary to adjust the height of the water control valve housing for road surface repairs, etc., it is sufficient to expose only the part of the upper cylinder 2 where the lid 1 is placed, and then bury the lid 1 in a synthetic resin cylinder. Since the surface of 4 is smooth, even if the synthetic resin cylinder 4 is fixed to the upper cylinder 2, etc., it can be easily rotated and its height can be adjusted without coming into close contact with the paving material. If it is not fixed, the height can be adjusted by leaving the synthetic resin cylinder 4 as it is and rotating only the upper cylinder 2.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Figure 1 is a side view showing the right half of a conventional water control valve housing in cross section, and Figure 2 is a cross sectional view of the synthetic resin cylinder after it has been installed. be. 1...Lid, 2...Upper cylinder, 3...Lower cylinder,
4...Cylinder made of synthetic resin.

Claims (1)

[Scope of utility model registration request] An upper cylinder 2 having a cylindrical part with a lid 1 that can be freely opened and closed placed on the upper opening made of cast iron and a screw formed in the lower part.
In a water control valve housing consisting of a lower cylinder 3 having a cylindrical portion with a lattice-shaped lower opening and a cylindrical portion screwed into the upper cylinder 2, a cylinder made of synthetic resin is placed outside the screwed portion of both the upper and lower cylinders. A screw-type water control valve housing characterized by having a sheath-shaped cylindrical valve.