CN201593630U - Double-disc check valve - Google Patents

Abstract

The utility model provides a double-disc check valve, which comprises a valve body, valve discs, a valve shaft and a seal ring, wherein the two symmetrical semicircular valve discs are arranged in the valve body through the valve shaft; the seal ring is arranged in the groove of the inner cavity of the valve body; and the periphery of the back of the valve disc is provided with a strengthening block. The beneficial effect of the utility model is that the double-disc check valve eliminates the parts such as the spring, the limiting rod and the like, has simple structure, high strength and reliable low-pressure seal.

Description

A kind of bivalve formula safety check

Technical field

The utility model relates to a kind of valving, especially a kind ofly is installed on the bivalve formula safety check that vertical pipe is used.

Background technique

At the bivalve formula safety check of every profession and trade use, the back of two flaps is equipped with spring and is used for the position-limited lever of supported spring at present, and medium overcomes spring force and backs down flap and realize medium conducting, many, the complex structure of part.

Summary of the invention

In order to overcome existing many, the baroque deficiencies of bivalve formula safety check part, the utility model provides a kind of bivalve formula safety check simple in structure.

The technological scheme that its technical problem that solves the utility model adopts is a kind of bivalve formula safety check, comprise valve body, flap, valve shaft, seal ring, the semicircle flap of two symmetries is installed in the valve body by valve shaft, seal ring is installed in the groove of body cavity, and flap back periphery is provided with reinforced block.

The beneficial effects of the utility model are to have cancelled parts such as spring, position-limited lever, and are simple in structure, the intensity height, and low pressure seal is reliable.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the tectonic maps of present embodiment;

Fig. 2 is the plan view of Fig. 1

Among the figure: 1. valve body; 2. seal ring; 3. flap; 4. valve shaft; 5. reinforced block.

Embodiment

A kind of bivalve formula safety check comprises that the semicircle flap 3 of valve body 1, flap 3, valve shaft 4,2, two symmetries of seal ring is installed in the valve body 1 by valve shaft 4, and seal ring 2 is installed in the groove of valve body 1 inner chamber, and flap 3 back peripheries are provided with reinforced block 5.Not only improved flap 3 rigidity and intensity, the reliable sealing in the time of more guaranteeing low pressure has been cancelled the part such as spring, position-limited lever of conventional check valves, simplifies the structure, and has saved cost, has reduced the expense of operation maintenance.

Claims (1)

1. bivalve formula safety check, comprise valve body, flap, valve shaft, seal ring, the semicircle flap of two symmetries is installed in the valve body by valve shaft, and seal ring is installed in the groove of body cavity, it is characterized in that: described flap back periphery is provided with reinforced block.

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