JPH0249533Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an opening/closing device for the head of a sounding tube installed in the double bottom of the engine room of a ship, and more specifically, to an opening/closing device for a self-closing type cock installed in the head of the sounding tube. It is something.

In ships, when it is necessary to open a sounding pipe below the load waterline in the shaft path, double bottom directly under the engine room, etc., a screw-on lid or self-closing type cap that cannot be removed must be installed on the head of the sounding pipe. Nippon Kaiji Kyokai rules require screw-tight lids for clean water and self-closing pots for oil. , 2 is commonly used.

That is, in the figure, A is the main body, B is a rotatable plug that opens and closes the flow path C by turning 90 degrees, and D is integrally attached to the plug B, and when left unattended, the plug B is in the closed state. F is an operating lever that is integrally attached to the tap B to manually open and close the tap. Cap G is provided with a screw cap to prevent intrusion. If you want to detect the oil level in the double-bottomed tank with a sounding rod (not shown), first use the cap G.
, then rotate the operating lever F by 90° to
The state shown by the imaginary line in the figure is changed to the state shown by the solid line, and the channel C is thus opened and the sounding rod is inserted and used.

Therefore, the above-mentioned parallel cock has a double structure of the cap G and the cock stopper B, which is expensive to manufacture, and requires space to turn the operating lever F and rotate the arm D with the weight E. , there is a problem that it is not possible to equip a parallel kettle in a narrow place where there is no such space. Note that H is a sounding tube.

In view of the above-mentioned circumstances, the present invention was made with the purpose of providing a sounding tube head opening/closing device that can be provided at low cost and does not take up a large space for opening and closing operations. A hole for inserting a sounding rod is provided at the top of the cap, and a valve body for opening and closing the hole is rotatably supported inside the cap so that it can be rotated from outside the cap. The present invention is characterized in that a tension spring mechanism is attached which always biases the opening/closing operation of the valve body by the shaft in the closing direction, and the valve body is configured to automatically close after opening. Hereinafter, the present invention will be described in detail based on the illustrative drawings from FIG. 3 onwards.

3 to 6 show one embodiment of the present invention, FIG. 3 is a front view, FIG. 4 is a plan view, FIG. 5 is a vertical sectional view of FIG. 4, and FIG. It is a partially cutaway view taken in the direction of the − arrow in the figure.

In these figures, reference numeral 1 denotes a cap screwed onto the head of the sounding tube H, and the inner peripheral surface of the cap 1 has a female thread 2 corresponding to the male screw h formed on the head peripheral wall of the sounding tube H. is formed.

Reference numeral 3 denotes a hole formed through the top of the cap 1 for inserting a sounding rod during sounding work, and is always closed by a valve body 5, which will be described later, except during the above-mentioned work. Further, reference numeral 4 indicates a sealing gasket implanted around the inner surface of the hole 3 formed at the top of the cap 1 as shown in FIG.

Reference numeral 5 denotes a valve body that opens and closes the hole 3. The valve body 5 is composed of a plug body 5a having a convex longitudinal section and a support rod 5b that supports the plug body 5a.
A projecting piece 5c is formed at the center of the lower surface of the support rod 5c, and the projecting piece 5c is pivotally connected to the support rod 5b by a pin 5d and is integrated with the supporting rod 5b.

That is, the support rod 5b plays the role of integrally rotating the plug 5a with its one end as a fulcrum, and also applies a pressing force to tightly fit the plug 5a into the hole 3, as described above. Like, plug body 5
The plug body 5a is pressed evenly over the entire circumference of the sealing gasket 4 by applying a pressing force through the protruding piece 5c protruding from the center of the lower surface of the sealing gasket 4a.

One end of the support rod 5b is integrally fixed to a shaft 6 attached to one side of the cap 1.
The plug body 5a is supported by the support rod 5b and rotated by the rotation of the hole 3, thereby opening and closing the hole 3.

That is, the shaft 6 is offset to one side of the cap 1 and inserted into the cap 1 from the outside.
A prismatic portion 6a is formed in the exposed portion inside the cap 1,
A cylindrical body 7 having a square hole is fitted onto the prismatic portion 6a and fixed together with a pin 8, and one end of the support rod 5b is fixed to the cylindrical body 7 by welding or the like, and
A handle 9 is attached to the outer end of the shaft 6, and by turning the handle 9, the shaft 6 is rotated,
The structure is such that the stopper 5a is opened via the cylindrical body 7 and the support rod 5b.

10 is a support hole formed in the inner circumferential wall of the cap 1 to rotatably support the shaft 6 inside the cap 1; 11, 11 are seats formed in the inner surface of the cap 1 to receive both ends of the cylindrical body 7; 12 indicates a nut for mounting and fixing the handle 9.

Further, the shaft insertion structure shown in the figure has a watertight function.

That is, a mounting seat 13 as shown in FIGS. 3, 5, and 6 is formed at the insertion opening of the shaft 6, and a gasket storage hole 14 having a larger diameter than the shaft 6 is formed in the center of the mounting seat 13. A structure in which a packing 15 is housed around the inserted shaft 6, a packing presser 16 is inserted from the outside of the packing 15, and this is tightened with bolts 17, 17 to compress the packing 15 and maintain watertightness. It is said that

Reference numeral 18 denotes a tension spring mechanism attached to the outside of the cap 1, which plays the role of always urging the opening/closing movement of the valve body 5 by the shaft 6 in the closing direction.

Specifically, a retaining plate 1 is attached to the outer peripheral wall of the cap 1.
8a protrudes from the shaft 6 outside the cap 1.
A tension branch 18b that rotates together with the coaxial shaft 6 is attached to the prismatic portion 6b of the shaft 6, and a spring 18c is stretched between the above-mentioned attachment plate 18a and the tension branch 18b.
One circumferential side of is in the direction shown by arrow A in Figures 3, 4, and 6,
In other words, the valve body 5 is always biased in the direction indicated by arrow B in FIG.

The present invention has the configuration as exemplified above, and the one circumferential side of 6 is normally pulled in the direction of arrow A by the tension spring mechanism 18, so that the valve body 5 is pressed into the state shown by the solid line in FIG. This is a so-called self-closing valve mechanism.

During sounding work, the operator turns the handle 9 in the direction shown by the arrow C in FIG.
The operator continues to hold down the handle 9 as shown by the imaginary line in the figure, inserts the sounding rod into the hole 3 thus opened, and takes measurements. When the sounding work is completed, the operator releases the handle 9 and springs 18c. The urging force automatically returns the valve body 5 to its original state.

Therefore, there is no external movement of the device of the present invention accompanying the opening/closing rotation of the valve body 5 other than the rotation of the handle 9 and the expansion/contraction of the spring 18c, and the installation space for the device of the present invention is necessarily extremely small. become.

As explained above, the present invention has a hole for inserting a sounding rod in the top of the cap, a valve body is inserted into the hole from inside the cap, and the valve body is pulled to become a self-closing type. It has a simple structure with a spring mechanism and can be manufactured and provided at a lower cost than the conventionally used parallel kettle.In addition, as mentioned above,
The self-closing valve body is supported by a tension spring mechanism, and compared to conventional parallel valves that use a weight, the space required for opening and closing operations is significantly smaller, and as a result, it can be used in confined spaces. It has the advantage that it can be installed and used in any location.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventionally used parallel kettle, Fig. 2 is a vertical sectional view of Fig. 1, and Figs. 3 to 6 show an embodiment of the present invention.
Figure 3 is a front view, Figure 4 is a plan view, Figure 5 is a
FIG. 6 is a partially cutaway view taken in the direction of the arrow - in FIG. 5. 1 is a cap, 2 is a female thread, 3 is a hole, 5 is a valve body, 6 is a shaft, 18 is a tension spring mechanism, and H is a sounding tube.

Claims (1)

[Scope of utility model registration request] A hole for inserting a sounding rod is provided in the top of a cap that is screwed onto the head of the sounding tube, and a valve body for opening and closing the hole is pivotally supported within the cap so that it can be rotated from outside the cap. A sounding tube head characterized in that a tension spring mechanism is attached to the outside of the cap to always bias the opening/closing operation of the valve body by the shaft in the closing direction, and the sounding tube head is configured to automatically close after opening. Part opening/closing device.