JPS5849704Y2 - Safety valve for pressure cookers, etc. - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pressure regulating safety valve that is attached to a pressure cooker, pressure cooker, etc.

An object of the present invention is to provide a safety valve that can be easily attached to a pot or the like and that prevents the valve pin from being exposed to the outside.

Another object of the present invention is to provide a safety valve that allows a steam test to be performed on the valve itself before it is attached to a pot or the like.

Furthermore, another object of the present invention is to provide a safety valve which has good sealing between the valve pin and the outer cylinder and prevents accidental leakage of steam.

Most conventional safety valves have a structure in which the entire structure is completed by attaching each part to the pot body, and the function of the safety valve can only be tested after it is attached to the pot.

Therefore, if the measured value fails, it is necessary to remove the safety valve one by one from the assembled pot, and there is also the disadvantage that the function of the safety valve is likely to change when attached to the pot.

The present invention attempts to eliminate these drawbacks,
The purpose was achieved by the following idea.

Embodiments of the present invention will be described below with reference to the drawings.

The safety valve of the present invention is constituted by a combination of a valve body a and a valve cap b.

The valve body a includes an outer cylinder 1 made of a bottomed cylindrical body with a steam passage hole 11, a valve pin restraining cylinder 2 whose majority part is screwed into the outer cylinder 1, and the valve pin restraining cylinder 2. It is constructed by a combination of valve pins 3 located inside.

This valve pin 3 has a fitting portion 3 whose lower end has a rectangular cross section.
1 is urged downward by a spring 4 so that it can be inserted into the steam passage hole 11 with an appropriate pressure, and a peripheral wall between this insertion part 31 and the lower surface of a flange 32 that locks the spring 4 is An O-ring 5 is attached to the shaped annular groove 33, and the O-ring 5 is configured to come into contact with the upper edge of the steam passage hole 11.

Therefore, the valve pin restraining cylinder 2 is made into a cylindrical body with a lid, and the top plate 21
A lift guide hole 22 for the valve pin 3 is bored in the center.

The vertical guide hole 22 has a diameter slightly larger than the outer diameter of the valve pin 3, so that steam can be ejected from around the valve pin 3 when the valve pin 3 is raised.

The valve cap b is a covered cylinder that can be screwed onto the valve pin restraining cylinder 2, and has a cavity inside thereof into which the upper end of the valve pin 3 can be inserted, and steam ejection holes are provided at appropriate locations on the peripheral wall. 6...
...6 is drilled in the horizontal direction.

In the figure, 7 is the backing, and 8 is the lid of the pot.

Since the present invention is constructed as described above, the valve body a is assembled before being attached to the pot, and a steam test can be conducted in advance.

In addition, since the valve body a does not need to be disassembled after the test, the function shown in the measured values can be maintained as is, and there is no need to test the valve function every time it is disassembled, unlike conventional safety valves.

Further, according to the present invention, since only the valve body a can be tested in advance, there is no need to conduct a steam test at the pot set manufacturer.

Furthermore, since the valve cap b is used when attaching the valve body a to the pot, the tip of the valve pin 3 lifted upward by steam pressure only protrudes into the valve cap b and is not exposed to the outside of the safety valve. It is safe because there is no
Unexpected accidents due to exposure of the valve pin 3 can be prevented.

Furthermore, in the past, since the contact portion between the valve pin 3 and the steam passage hole 11 of the outer cylinder 1 was a metal surface, steam leakage could occur from the contact surface, especially at low pressure.
According to the present invention, by attaching the O-ring 5 to the valve pin 3, this O-ring 5 comes into contact with the steam passage hole 11 of the outer cylinder 1, improving sealing and airtightness, thereby preventing inadvertent steam leakage. It has the characteristics of completely preventing and being safe.

[Brief explanation of drawings]

The figures show an embodiment of the present invention. Figure 1 is an exploded perspective view of the valve cap, Figure 2 is an exploded cross-sectional view of each component, and Figure 3 is a cross-sectional view when it is attached to a pot. be. a... Valve body, b... Valve cap, 1
...Outer cylinder, 2... Valve pin restraining cylinder, 3.
...Valve pin, 4...Spring, 5...
...O-ring, 6...Steam outlet.

Claims (1)

[Scope of utility model registration request] The valve pin restraining cylinder 2 is screwed into the outer cylinder 1, which has a steam passage hole 11 in its lower surface, from above, and is pressed downward by the force of the spring 4 into the outer cylinder 1 and the valve pin restraining cylinder 2. The upper part of the valve pin is the top plate 2 of the valve pin restraining cylinder 2.
The O-ring 5 is inserted into the guide (Li2) drilled in the outer cylinder 1, and the O-ring 5 is attached to the annular groove 33 formed near the bottom of the valve pin. The valve body a has a valve pin 3 attached thereto so that the valve pins 3 are in contact with each other, and the valve pin suppressing cylinder 2 is a capped cylindrical body that can be screwed onto the valve pin suppressing cylinder 2, and steam ejection holes 6 are provided at appropriate locations on the peripheral wall.・Safety valve for pressure cookers, etc., consisting of a combination with valve cap b with 6 holes.