CN203009938U - Vent valve - Google Patents

Abstract

The utility model discloses a vent valve which comprises a valve body. The valve body is of a hollow structure, two ends of the valve body are both provided with threads, a nut is connected on the threads of the upper end of the valve body, and a valve core is arranged inside the upper end of the valve body. The valve core comprises a silicon rubber case and a gas nipple, the gas nipple is movably connected with the silicon rubber case, and a sealing ring is arranged between the gas nipple and the silicon rubber case. The vent valve has the advantages that the vent valve is simple in structure, and can be started accurately and timely without a manual operation, and manpower is saved, efficiency is improved, and practicality is strong.

Description

A kind of outlet valve

Technical field

The utility model relates to a kind of for the outlet valve on the water level joint of steam generator.

Background technique

Existing outlet valve needs artificial exhaust, complex operation and need the time, and also time requirement is higher, uses inconvenience.

The model utility content

For the deficiencies in the prior art, the utility model provides a kind of Novel vent valve.

To achieve these goals, technical solution adopted in the utility model is:

A kind of outlet valve comprises valve body, and described valve body is hollow structure, and described valve body two ends are equipped with screw thread, and the valve body upper end nut that has been threaded, and inside, valve body upper end is provided with spool.

Described spool comprises silica gel sheath and valve, and valve and silica gel sheath are flexibly connected, and are provided with seal ring between described valve and silica gel sheath.

The beneficial effects of the utility model: the utility model is simple in structure, does not need the manual operation just can be accurately and in time start outlet valve, saves manpower, raises the efficiency, and is practical.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is the valve core structure schematic diagram.

Embodiment

A kind of outlet valve as depicted in figs. 1 and 2 comprises valve body 1, and described valve body 1 is hollow structure, and described valve body 1 two ends are equipped with screw thread, and the valve body 1 upper end nut 2 that has been threaded, and valve body 1 inside, upper end is provided with spool 3; Described spool 3 comprises silica gel sheath 4 and valve 5, and valve 5 is flexibly connected with silica gel sheath 4, is provided with seal ring 6 between described valve 5 and silica gel sheath 4.

When the steam generator internal pressure during greater than external pressure, internal gas jack-up valve 5 makes seal ring 6 sealing air outlets; During less than external pressure, valve 5 gravitates move downward band dynamic seal ring 6, thereby open the air outlet when the steam generator internal pressure.

Be more than the utility model preferred forms, in related domain, those skilled in the art's simple change and replacement are all within protection domain of the present utility model.

Claims (2)

1. an outlet valve, comprise valve body, it is characterized in that: described valve body is hollow structure, and described valve body two ends are equipped with screw thread, and the valve body upper end nut that has been threaded, and inside, valve body upper end is provided with spool.

2. a kind of outlet valve according to claim 1, it is characterized in that: described spool comprises silica gel sheath and valve, valve and silica gel sheath are flexibly connected, and are provided with seal ring between described valve and silica gel sheath.

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