CN205226612U - Butterfly valve top bush seal structure - Google Patents

Abstract

The utility model discloses a butterfly valve top bush seal structure, including valve body, valve rod, the valve rod is located in the valve body, the valve body with be equipped with the bush between the valve rod, the outer wall of bush, inner wall are equipped with O type circle groove respectively, and O type circle groove is provided with O type circle. The utility model provides a butterfly valve top bush seal structure is sealed respond well, sealed problem between solution valve top valve rod that can be fine and the valve body, simple structure, long service life.

Description

A kind of butterfly valve top bush sealing configuration

Technical field

The utility model relates to a kind of butterfly valve top bush sealing configuration.

Background technique

Conventional centre-pivoted butterfly valve two seals, seals deficiency between valve top valve rod and valve body, often occur in actual use leaking.

Model utility content

In order to overcome the defect of prior art, the utility model provides a kind of leaf spring increasing sealability between valve top valve rod and valve body and presses valve seat type ball valve.

The utility model adopts following technological scheme in order to achieve the above object:

A kind of butterfly valve top bush sealing configuration, comprise valve body, valve rod, described valve rod is arranged in described valve body;

Be provided with lining between described valve body and described valve rod, the outer wall of described lining, inwall are respectively equipped with O type ring recess, and described O type ring recess is provided with O type circle.

Preferably, described O type circle is made up of hydrorubber or silicone rubber.

The butterfly valve top bush sealing configuration sealing effect that the utility model provides is good, can solve sealing problem between valve top part valve rod and valve body, and structure is simple, long service life.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide further understanding of the present utility model, forms a application's part, does not form improper restriction of the present utility model, in the accompanying drawings:

Fig. 1 is the utility model embodiment cross-sectional view.

Embodiment

Describe the utility model in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the utility model with illustrative examples of the present utility model and explanation at this, but not as to restriction of the present utility model.

As shown in Figure 1, a kind of butterfly valve top bush sealing configuration, comprises valve body 2, valve rod 1, and described valve rod 1 is arranged in described valve body 2; Lining 3 is provided with between described valve body 2 and described valve rod 1, the outer wall of described lining 3, inwall are respectively equipped with O type ring recess, and described O type ring recess is provided with O type circle 4, O type circle 4 has good elasticity, sealing effect is good, can realize and valve body 2, valve rod 1 effective sealing.

As the part preferred version of above-described embodiment scheme, described O type circle 4 is made up of hydrorubber, its wear-resisting, good corrosion resistance, also can be made up of silicone rubber, silicone rubber O type circle has good elasticity, and sealing effect is good, can solve sealing problem between valve top valve rod 1 and valve body 2, structure is simple, long service life.

Above the technological scheme that the utility model embodiment provides is described in detail, apply specific case herein to set forth the principle of the utility model embodiment and mode of execution, the explanation of above embodiment is only applicable to the principle helping to understand the utility model embodiment; Meanwhile, for one of ordinary skill in the art, according to the utility model embodiment, embodiment and application area all will change, and in sum, this description should not be construed as restriction of the present utility model.

Claims (2)

1. a butterfly valve top bush sealing configuration, is characterized in that:

Comprise valve body, valve rod, described valve rod is arranged in described valve body;

Be provided with lining between described valve body and described valve rod, the outer wall of described lining, inwall are respectively equipped with O type ring recess, and described O type ring recess is provided with O type circle.

2. a kind of butterfly valve top bush sealing configuration according to claim 1, is characterized in that:

Described O type circle is made up of hydrorubber or silicone rubber.