JPS6255032B2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, small-diameter (φ)
For underground pipelines with a length of 50 m/m or less, a TIS standard bronze slith gate valve is used as an opening/closing device.A suitable valve cylinder is installed around the slith gate valve, and a specified iron cover is attached to the top. This protects the opening/closing handle at the top of the spindle.
However, the buried depth of the pipeline is 1.2m from the surface of the pipe to the road surface in national, prefectural and municipal roads, and as a result, when opening and closing, it is necessary to insert an opening/closing machine and operate the handle, which is time-consuming and time-consuming. Over a long period of time, turbid water and dirt may flow into the valve barrel, causing the opening/closing handle to corrode and become impossible to open/close.

In order to solve the above-mentioned drawbacks, the present invention extends the spindle shaft of a conventional TIS standard slith gate valve upward and extends it, and also inserts a protective tube into the spindle shaft to supplement the strength of the spindle shaft to hold the seal. This is a bronze longitudinal spindle type slith gate valve whose lower end is fitted into a nut.It can be easily opened and closed without using an opening/closing machine, and it prevents muddy water and earth and sand from flowing in from the roadside iron cover for a long period of time. Even if the opening/closing handle does not corrode or disappear, even if water leaks from the gland, the water leakage can be easily prevented by tightening the packing retaining nut using the protection tube without the need for excavation. It is something.

Hereinafter, the configuration of the present invention will be explained with reference to embodiment figures.

The valve body 2 is fitted into a guiding groove provided on the central inner surface of the valve box 1 so as to be able to be guided vertically, and a support pipe 4 having a threaded hole on the inner surface is inserted from the valve cover 3 fitted on the upper surface of the valve box 1. In a slither gate valve in which the lower end of a spindle shaft 5 protrudingly inserted and screwed into the support tube 4 is loosely engaged with the upper end of the valve body 2, a vinyl chloride pipe or the like is attached to a packing retaining nut 6 screwed into the upper end of the support tube 4. The lower end of the formed spindle protection pipe 7 is fitted, the spindle shaft 5 is extended upward so as to protrude from the upper end of the spindle protection pipe 7, and the opening/closing handle 8 is secured to the upper end of the spindle shaft 5. This is a longitudinal spindle type slith gate. It is made to constitute the valve 9. In the figure, 10 is a water pipe, 11 is a valve cylinder, 12 is a lid, and 13 is a protection pipe steady stop.

Next, the effects of the present invention will be explained with reference to embodiment figures.

After connecting the longitudinal spindle type slith gate valve 9 of the present invention to the water pipe 10 buried in the ground, the valve cylinder 11 is buried in the peripheral edge of the support pipe 4 and the spindle protection pipe 7, and the lid 12 on the upper end of the valve cylinder 11 is closed. The spindle protection pipe 7 is installed at the same height as the ground surface, and the protection pipe steadying 13 is fitted inside the valve cylinder 11.
It supports The depth from the lid 12 of the valve cylinder 11 to the upper end of the support tube 4 is approximately 160 cm, and since the spindle shaft of conventional slith gate valves is short, a switch must be used to open and close the valve. In the longitudinal spindle type slith gate valve 9 of the present invention, since the spindle shaft 5 is extended upward, the valve cylinder 11
The opening/closing operation can be easily performed by opening the lid 12 and immediately grasping the opening/closing handle 8. Moreover, even if turbid water or dirt flows into the inside of the valve cylinder 11 through the lid 12, the spindle shaft 5 and the opening/closing handle 8 are not directly contaminated, and corrosion of the opening/closing handle 8 can be prevented. If ground water leakage occurs, open the lid 12, remove the opening/closing handle 8 from the upper end of the spindle shaft 5, fit a box spanner to the upper end of the spindle protection pipe 7, and tighten the packing retainer nut 6 while rotating it. Water pipes 10 can be easily prevented from leaking.
The above-mentioned remarkable effects can be achieved, such as ease of maintenance without requiring much effort.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a longitudinal spindle type slither gate valve according to an embodiment of the present invention, and FIG. 2 is a diagram showing its usage state.

Claims (1)

[Claims] 1 Valve body 2 is placed in the guide groove provided on the central inner surface of valve body 1.
A support tube 4 with a threaded hole provided on the inner surface of the valve cover 3 fitted on the upper surface of the valve box 1.
In this gate valve, the lower end of the spindle shaft 5 inserted and screwed into the support tube 4 is loosely engaged with the upper end of the valve body 2, and a PVC pipe, etc. The lower end of the spindle protection pipe 7 formed by the spindle protection pipe 7 is fitted, and the spindle shaft 5 is extended upward so as to protrude from the upper end of the spindle protection pipe 7, and the opening/closing handle 8 is secured to the upper end of the spindle shaft 5. A long spindle type slithered gate valve.