CN207005525U - Spherical-surface pipe joint - Google Patents

Abstract

The utility model discloses a spherical pipe joint. The joint includes a spherical connecting part and a connecting pipe. A cavity A with upper and lower ends openings is arranged on the gland. The inner wall of the cavity A has the same curvature as the outer wall of the spherical connecting part. The cavity A The inner wall of the inner wall of the spherical joint fits with the middle and upper part of the outer wall of the spherical joint; the base is provided with a cavity B, and the upper part of the inner wall of the cavity B is provided with a concave spherical sliding surface. Fitting with the lower part of the spherical connection part; the joint is provided with a first flow channel through the spherical connection part and the connecting pipe; Cavity B. The joint of the utility model can rotate within a certain range relative to the gland and the base. The user can adjust the joint to the required angle and then fix it through the gland and the base. The joint and the base are respectively connected to the pipeline; the structure is stable and not easy Leakage, it can also be flexibly adjusted and used in places where the space is relatively narrow.

Description

Spherical Fitting

technical field

The utility model relates to a pipe connector, in particular to a spherical pipe joint.

Background technique

Pipe joints are commonly used parts for connecting pipelines or installing pipelines on hydraulic components in hydraulic systems, mainly including welding type, ferrule type, buckle type and flared type; when the nozzles of the two connected pipes are not in the same axis When connecting, it is often necessary to use universal pipe joints to connect, but the existing universal pipe joints have a single form, and it is not convenient to adjust the angle of the pipe in places where the space is relatively narrow, and it is inconvenient to use; at present, there is also a spherical pipe joint on the market. , mainly including a sphere, a pressing piece and a connecting piece. The sphere is located in the spherical groove between the pressing piece and the connecting piece. There is a connecting port on the sphere, and the sphere can rotate relative to the pressing piece and the connecting piece. The advantage is high sensitivity , the angle can be adjusted arbitrarily. The problem is that when the connecting port and the connecting piece are respectively connected to the two connected pipes, the ball can still rotate within a certain range, and the stability is poor. When the fluid pressure is high, the fluid is easy to flow from the The gap between the ball and the spherical groove flows out, and the sealing is poor and easy to leak.

Utility model content

The technical problem to be solved by the utility model is that the angle can be adjusted flexibly, the spherical pipe joint is convenient to use and has good sealing performance.

The technical solution adopted by the utility model to solve the technical problem is: the spherical pipe joint includes a joint, a gland, and a base, the joint includes a spherical connecting part and a connecting pipe, and the connecting pipe is arranged on the top of the spherical connecting part and is fixedly connected as one; The cover and the base are connected by bolts, and the spherical joint is clamped between the gland and the base. The gland is provided with a cavity A with openings at the upper and lower ends. The inner wall of the cavity A is a concave spherical surface, and the top of the spherical joint passes through the The upper end of cavity A extends out of the gland; the inner wall of cavity A has the same curvature as the outer wall of the spherical joint, and the inner wall of cavity A fits the middle and upper part of the outer wall of the spherical joint; cavity B is provided on the base, and the inner wall of cavity B The upper part is provided with a concave spherical sliding joint surface, the sliding joint surface has the same curvature as the outer wall of the spherical joint part, and the sliding joint surface is attached to the lower part of the spherical joint part; the joint is provided with a first flow channel passing through the spherical joint part and the connecting pipe, The base is provided with a connection part, and the connection part is provided with a second flow channel, and the first flow channel and the second flow channel are connected to the cavity B.

Wherein, an annular groove is arranged on the sliding joint surface, and an O-shaped sealing ring is arranged in the groove.

Further, the bottom opening of the first flow channel is located in the cavity B and below the O-ring.

The beneficial effects of the utility model are: the utility model joint can be rotated within a certain range relative to the gland and the base, and the user can adjust the joint to the required angle to connect the connected pipe according to the actual situation, and it can also be used in places where the space is relatively narrow. Flexible adjustment and use; the joint is fixed by the gland and the base after the angle is adjusted, that is, the joint cannot be rotated after the angle is adjusted, the structure is stable, it can withstand high fluid pressure, and it is not easy to leak.

Description of drawings

Fig. 1 is a schematic diagram of the utility model when the joint is vertical relative to the gland;

Fig. 2 is a schematic diagram of the utility model when the joint is inclined relative to the gland;

Marked in the figure are: joint 1, spherical connection part 11, connecting pipe 12, gland 2, cavity A21, base 3, cavity B31, sliding surface 32, connection part 33, O-ring 4.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figures 1 and 2, the spherical pipe joint includes a joint 1, a gland 2, and a base 3. The joint 1 includes a spherical connection part 11 and a connecting pipe 12. The connecting pipe 12 is arranged on the top of the spherical connecting part 11 and is fixedly connected as One body; the gland 2 and the base 3 are connected by bolts, the spherical joint 11 is clamped between the gland 2 and the base 3, and the gland 2 is provided with a cavity A21 with upper and lower ends open. It can be understood that the cavity A21 upper end opening is circular, and the inner wall of cavity A21 is a concave spherical surface, and the top of spherical connecting portion 11 stretches out of gland 2 through the upper end of cavity A21; The inner wall of the cavity A21 is attached to the middle and upper part of the outer wall of the spherical connecting part 11; the base 3 is provided with a cavity B31, and the upper part of the inner wall of the cavity B31 is provided with a concave spherical sliding joint surface 32, and the sliding joint surface 32 and the spherical connecting part 11 The curvature of the outer wall is the same, and the sliding surface 32 is attached to the lower part of the spherical connecting part 11; the joint 1 is provided with a first flow channel through the spherical connecting part 11 and the connecting pipe 12, and the base 3 is provided with a connecting part 33, which is provided with The second flow channel, the first flow channel, and the second flow channel are connected to the cavity B31, and the connection pipe 12 and the connection part 33 are used to connect the outer pipe. The joint 1 can rotate within 360° in the horizontal direction relative to the gland 2 and the base 3, and rotate between 0-α° in the vertical direction. Those skilled in the art can understand that the rotation in the vertical direction The angle is affected by the diameter of the spherical connection part 11, the diameter of the connecting pipe 12, the thickness of the gland 2, and the diameter of the opening at the upper end of the cavity A21. It is further preferred that α≤60, that is, the joint 1 can be positioned relative to the gland 2 and the base 3. Rotate between 0-60° in the vertical direction; it should be noted that the bottom opening of the first flow channel is always located in the cavity B31 to avoid fluid leakage.

The operation method of the above technical solution is to place the joint 1 between the gland 2 and the base 3, adjust the joint 1 to a suitable angle according to the actual situation, and then tighten the bolts to fix the joint 1.

Preferably, an annular groove is arranged on the sliding contact surface 32, and an O-ring seal 4 is arranged in the groove.

Further preferably, the bottom opening of the first flow channel is located in the cavity B31 and below the O-ring 4 .

Claims (3)

1. spherical-surface pipe joint, it is characterised in that：Including joint (1), gland (2), base (3), joint (1) includes spherical connecting portion (11) it is arranged at the top of spherical connecting portion (11) and is connected to one with connecting tube (12), connecting tube (12)；Gland (2) with Base (3) is bolted, and spherical connecting portion (11) is connected between gland (2) and base (3), and gland is provided with (2) The cavity A (21) of upper and lower ends opening, cavity A (21) inwall are concave spherical surface, and the top of spherical connecting portion (11) passes through cavity A (21) gland (2) is stretched out outside in upper end；Cavity A (21) inwall is identical with spherical connecting portion (11) outer wall curvature, cavity A's (21) Inwall is bonded with spherical connecting portion (11) outer wall middle and upper part；Be provided with cavity B (31) on base (3), cavity B (31) inwall it is upper Portion is provided with the sliding face (32) of concave spherical surface shape, and sliding face (32) are identical with spherical connecting portion (11) outer wall curvature, slips face (32) it is bonded with spherical connecting portion (11) bottom；The spherical connecting portion (11) of insertion and connecting tube (12) are provided with joint (1) First flow, adapter portion (33) is provided with base (3), adapter portion (33) are provided with second flow channel, first flow, second flow channel Connect cavity B (31).

2. spherical-surface pipe joint according to claim 1, it is characterised in that：Annular groove is provided with sliding face (32), it is recessed O-ring seal (4) is provided with groove.

3. spherical-surface pipe joint according to claim 2, it is characterised in that：The bottom end opening of first flow is located at cavity B (31) in and below O-ring seal (4).