CN205078950U - Sphere union sealed firmly - Google Patents

Abstract

The utility model relates to a sphere union sealed firmly is by male joint, female joint, nut triplex. Male joint one end is equipped with external seal valve face, female joint one end is equipped with inside seal valve face, screw up the nut and make external seal valve face and the constitution of the inside seal valve face in female joint butt joint valve in the male joint sealed, its characterized in that: external seal valve face in the male joint is the sphere, inside seal valve face in the female joint is the conical surface, and the cone angle setting is between 68~72. Compare with traditional union, the beneficial effects of the utility model are that: 1, external seal valve face in the male joint is the sphere, can universally comply with the mounted position of connecting between two tubs to the sealed effect of the connection that connects the component has effectively been guaranteed to join in marriage, 2, the cone angle setting of the inside seal valve conical surface in the female joint can effectively increase behind the tighten nut power of screwing up between male joint and the female joint between 68~72, make sealed effect between the two better.

Description

The hard sealed active connected head of a kind of sphere

Technical field

The utility model relates to a kind of pipeline and connects element union, particularly relates to the sealing configuration that a kind of pipeline connects element union, belongs to seal for pipe joints interconnection technique field.

Background technique

Union indispensablely in pipeline pipeline connects element.Traditional union as shown in Figure 1, it is made up of tool joint pin a, female joint c and nut b tri-part, two ends pipeline is connected in the internal thread of tool joint pin a and female joint c respectively by outside thread, and public access adopts smooth outer R face, mother connects employing 90 ° of inner conical surfaces, and form the sealing of docking valve by fastening nut b.The adaptability of this union is poor, especially installation environment comparatively severe pipeline in use time, valve sealing surface can be caused not overlap, and cause connecting element and leak, therefore it is usually used in the higher pipeline of fluid transfer proportion.

Summary of the invention

Poor for traditional union sealing effect, be not suitable for the drawback of the lighter liquid fluid duct of transmission proportion, the utility model provides a kind of sphere hard sealed active connected head.

The technical solution of the utility model is: the hard sealed active connected head of a kind of sphere, and be made up of tool joint pin, female joint, nut three part, described tool joint pin one end is provided with external sealed valve face; Described female joint one end is provided with interior sealing valve face; Described nut screwing clamping makes the interior sealing valve face in the external sealed valve face in tool joint pin and female joint form the sealing of docking valve, it is characterized in that:

External sealed valve face in described tool joint pin is sphere;

Interior sealing valve face in described female joint is the conical surface, and cone angle is arranged between 68 ° ~ 72 °.

Compared with traditional union, the beneficial effects of the utility model are:

1, the external sealed valve face in tool joint pin is sphere, universally can comply with the mounting point between connection two pipe, thus effectively ensure that the connection sealing effect connecting element;

The cone angle of the interior sealing valve conical surface 2, in female joint is arranged between 68 ° ~ 72 °, effectively can increase the screwing force between tool joint pin and female joint after nut screwing clamping, make sealing effect between the two better.

Therefore, the utility model have reasonable in design, structure simple, connect good sealing effect, be applicable to transmit the advantage of proportion compared with light liquid state fluid circuit.

Accompanying drawing explanation

Accompanying drawing 1 is the structural representation of traditional union;

Accompanying drawing 2 is structural representation of the present utility model.

In fig 2: 1 tool joint pin, 101 external sealed valve faces, 2 nuts, 3 female joints, α cone angle.

Embodiment

Below in conjunction with accompanying drawing, explanation is further explained to the utility model:

As shown in Figure 2, one end of tool joint pin 1 is provided with external sealed valve face 101, and external sealed valve face 101 is sphere; One end of female joint 3 is provided with the interior sealing valve conical surface, and cone angle is 70 °; Fastening nut 2 makes the interior sealing valve conical surface in the external sealed valve face 101 in tool joint pin 1 and female joint 3 form the sealing of docking valve.

External sealed valve face 101 in tool joint pin 1 is designed to sphere by the utility model, and be 70 ° by the cone angle design sealing the valve conical surface in female joint 3, universally can comply with the mounting point between connection two pipe on the one hand, effectively ensure the connection sealing effect connecting element; Effectively can increase on the other hand nut 2 and tighten screwing force between rear tool joint pin 1 and female joint 3, make sealing effect between the two better.

Claims (1)

1. the hard sealed active connected head of sphere, be made up of tool joint pin, female joint, nut three part, described tool joint pin one end is provided with external sealed valve face; Described female joint one end is provided with interior sealing valve face; Described nut screwing clamping makes the interior sealing valve face in the external sealed valve face in tool joint pin and female joint form the sealing of docking valve, it is characterized in that:

External sealed valve face in described tool joint pin is sphere;

Interior sealing valve face in described female joint is the conical surface, and cone angle is arranged between 68 ° ~ 72 °.