CN113847493A

CN113847493A - Connecting pipe fitting

Info

Publication number: CN113847493A
Application number: CN202110954308.XA
Authority: CN
Inventors: 谢海锋; 胡恒广; 刘元奇; 李晓辉
Original assignee: Tunghsu Technology Group Co Ltd; Hebei Guangxing Semiconductor Technology Co Ltd
Current assignee: Tunghsu Technology Group Co Ltd; Hebei Guangxing Semiconductor Technology Co Ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2021-12-28

Abstract

The invention relates to the field of fluid conveying, and discloses a connecting pipe fitting which comprises a supporting seat (3), a liquid outlet pipe (2) and a rigid sealing ring (7), wherein the supporting seat (3) comprises a main pipe (13) and an annular flange (14) arranged on the inner circumferential surface of the outlet end of the main pipe (13), one part of the liquid outlet pipe (2) is rotatably inserted into the main pipe (13), a shaft shoulder (16) positioned in the main pipe (13) is arranged on the outer circumference of the liquid outlet pipe (2), and the sealing ring (7) is positioned among the liquid outlet pipe (2), the shaft shoulder (16), the main pipe (13) and the flange (14). Through above-mentioned technical scheme, the sealing ring can form sealedly with four parts on every side, especially forms sliding seal with the drain pipe, can improve the sealed effect between drain pipe and the main part pipe, appears leaking when avoiding the drain pipe to rotate.

Description

Connecting pipe fitting

Technical Field

The invention relates to the field of fluid conveying, in particular to a connecting pipe fitting.

Background

In some fluid pipelines, part of the pipe fittings need to be rotated to change the orientation of the pipe fittings and meet the corresponding fluid conveying requirements, an included angle is formed between the pipe fittings needing to be rotated and the connected static pipe fittings, the pipe fittings rotate around the central axis of the static pipe fittings, and a joint assembly needs to be arranged between the pipe fittings and the static pipe fittings.

In the joint assembly, the static part connected with the static pipe fitting and the rotating part connected with the rotating pipe fitting are included, the sealing effect of the rotating part at the joint is not ideal, and leakage is easy to occur.

Disclosure of Invention

The invention aims to provide a connecting pipe fitting to solve the problem that leakage is easy to occur between static supporting parts of a rotating pipe fitting.

In order to achieve the above object, the present invention provides a connecting pipe, wherein the connecting pipe comprises a supporting seat, a drain pipe and a rigid sealing ring, the supporting seat comprises a main pipe and an annular flange arranged on an inner circumferential surface of an outlet end of the main pipe, a part of the drain pipe is rotatably inserted into the main pipe, a shaft shoulder arranged in the main pipe is arranged on an outer circumference of the drain pipe, and the sealing ring is arranged between the drain pipe, the shaft shoulder, the main pipe and the flange.

Optionally, the sealing ring is provided with an annular groove on its outer circumferential surface, and the annular groove accommodates the elastic sealing ring therein.

Optionally, the shoulder has a tapered outer peripheral surface in a direction from the inlet to the outlet, and the sealing ring is in sealing engagement with the tapered outer peripheral surface of the shoulder.

Optionally, the connecting tube comprises a rigid slip ring sleeved on the liquid outlet pipe, the slip ring is positioned on one side of the shaft shoulder facing the inlet of the liquid outlet pipe, and the slip ring is in sealing engagement with the annular end face of the shaft shoulder, the outer circumferential surface of the liquid outlet pipe and the inner circumferential surface of the main body pipe.

Alternatively, the slip ring and the sealing ring are made of ceramic.

Optionally, the connecting tube member includes a gland connected to the inlet end of the main tube and a resilient member located between the gland and the slip ring.

Optionally, the elastic member is a coil spring, and the connecting pipe includes a spring seat located between the elastic member and the slip ring, and the spring seat is formed with an annular groove for receiving an end of the elastic member.

Alternatively, the pressing cover is provided with a liquid inlet hole communicating with the main body pipe, and the connection pipe member includes a liquid inlet joint partially inserted into the liquid inlet hole.

Alternatively, the support base includes a flange connected to an outer circumferential surface of the inlet end of the main pipe, and the gland is detachably connected to the flange.

Optionally, the outlet end of the liquid outlet pipe is connected with a liquid outlet elbow.

Through above-mentioned technical scheme, the sealing ring can form sealedly with four parts on every side, especially forms sliding seal with the drain pipe, can improve the sealed effect between drain pipe and the main part pipe, appears leaking when avoiding the drain pipe to rotate.

Drawings

FIG. 1 is a perspective view of a connecting tube according to an embodiment of the present invention;

fig. 2 is a sectional view of a connecting pipe member according to an embodiment of the present invention.

Description of the reference numerals

1 liquid outlet elbow 2 liquid outlet pipe

3 supporting seat 4 gland

5 liquid inlet joint 6 bolt

7 sealing ring 8 spring seat

9 gasket 10 spring

11 slip ring 12 sealing ring

13 main body tube 14 flange

15 Flange

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

The invention provides a connecting pipe fitting, which comprises a supporting seat 3, a liquid outlet pipe 2 and a rigid sealing ring 7, wherein the supporting seat 3 comprises a main pipe 13 and an annular flange 14 arranged on the inner circumferential surface of the outlet end of the main pipe 13, a part of the liquid outlet pipe 2 is rotatably inserted into the main pipe 13, a shaft shoulder 16 positioned in the main pipe 13 is arranged on the outer circumference of the liquid outlet pipe 2, and the sealing ring 7 is positioned among the liquid outlet pipe 2, the shaft shoulder 16, the main pipe 13 and the flange 14.

The supporting seat 3 is a main supporting structure for connecting pipes, and includes a main pipe 13, an inlet end of which can be communicated with other pipes, and an outlet end of which allows the liquid outlet pipe 2 to be inserted, and the liquid outlet pipe 2 can rotate around a central axis relative to the main pipe 13, so that the liquid outlet pipe 2 (or an elbow, a joint, etc. connected to the other end) can be connected with other pipes in a proper direction.

A shaft shoulder 16 is arranged on the periphery of the liquid outlet pipe 2, and a flange 14 for stopping the shaft shoulder 16 is arranged at the lower end of the main pipe 13 so as to limit the liquid outlet pipe 2 from being drawn out of the outlet end of the main pipe 13; in particular, a rigid sealing ring 7 is provided between flange 14 and shoulder 16, and sealing ring 7 is positioned between body tube 13 and drain tube 2 to form a sealing engagement with flange 14, shoulder 16, and body tube 13 and drain tube 2, respectively, to provide a seal between body tube 13 and drain tube 2 and prevent leakage between body tube 13 and drain tube 2. Wherein, drain pipe 2 can rotate for sealing ring 7, forms sliding seal between drain pipe 2 and the sealing ring 7.

In this scheme, the sealing ring can form sealedly with four parts on every side, especially forms sliding seal with the drain pipe, can improve the sealed effect between drain pipe and the main part pipe, appears leaking when avoiding the drain pipe to rotate.

Furthermore, an annular groove is provided on the outer circumferential surface of the sealing ring 7, in which an elastic sealing ring 12 is accommodated. As shown in fig. 2, an annular groove is formed on the outer periphery of the seal ring 7, a seal ring 12 is received in the annular groove, and the seal ring 12 is closely attached to the inner peripheral surface of the main body pipe 13 to form a seal. The seal ring 12 is made of an elastic material, such as rubber.

Wherein the shoulder 16 has a tapered outer peripheral surface in a direction from the inlet to the outlet, the sealing ring 7 being in sealing engagement with the tapered outer peripheral surface of the shoulder 16. As shown in fig. 2, the outer peripheral surface of the shoulder 16 tapers from top to bottom (i.e., from the inlet to the outlet) and eventually engages the outer peripheral surface of the other portion of the outlet pipe 2 (the outer peripheral surfaces of the outlet pipe 2 and the shoulder 16 are not smooth transitions), and the sealing ring 7 is formed with a tapered inner peripheral surface that mates with the tapered outer peripheral surface of the shoulder 16 so that the shoulder 16 and the sealing ring 7 are sufficiently sealed in a snug manner, and even if the shoulder 16 or the sealing ring 7 become worn, the shoulder 16 and the sealing ring 7 can further move axially toward each other to maintain sealing engagement.

Furthermore, the connecting tube comprises a rigid slide ring 11 which is mounted on the outlet pipe 2, the slide ring 11 being located on the side of the shoulder 16 facing the inlet of the outlet pipe 2, the slide ring 11 being in sealing engagement with the annular end face of the shoulder 16, the outer circumferential surface of the outlet pipe 2 and the inner circumferential surface of the main tube 13. The inner circumference of the slip ring 11 forms a seal with the body tube 13, its outer circumference forms a seal with the outlet pipe 2 and its end face can form a sealing engagement with the shoulder 16. As shown in fig. 2, the slip ring 11 and the sealing ring 7 are located on either side of the shoulder 16, respectively, i.e. on either side of the shoulder 16, respectively, forming a seal between the body tube 13 and the outlet tube 2.

Wherein the slip ring 11 and the sealing ring 7 are made of ceramic. Both the slide ring 11 and the sealing ring 7 are rigid wear parts and may be made of ceramic. In addition, the support base 3 and the outlet pipe 2 may each be made of metal.

Further, the connection pipe member includes a gland 4 connected to an inlet end of the main body pipe 13 and an elastic member 10 between the gland 4 and the slip ring 11. The gland 4 is formed substantially in the shape of a disc which is located at the inlet end of the main tube 13 and is fixed relative to the main tube 13, the resilient member 10 being clamped between the slide ring 11 and the gland 4 so that the slide ring 11 can be pressed against the shoulder 16 so that the slide ring 11 is always in sealing engagement with the shoulder 16. In particular, when the joint surfaces of the shoulder 16 and the sealing ring 7 are worn, the sliding ring 11 and the shoulder 16 can be further pushed toward the sealing ring 7 by the elastic member 10, so that the shoulder 16 and the sealing ring 7 are tightly sealed.

Specifically, the elastic member 10 is a coil spring, the connecting pipe includes a spring seat 8 located between the elastic member 10 and the sliding ring 11, and an annular groove for accommodating an end of the elastic member 10 is formed on the spring seat 8. The spring seat 8 is substantially annular, and is fitted over the liquid outlet pipe 2 and restricted from moving relative to the liquid outlet pipe 2 by the outer peripheral surface of the liquid outlet pipe and the inner peripheral surface of the main pipe 13. An annular groove is formed on the end surface of the spring seat 8 facing the gland 4, and one end of the coil spring is received in the annular groove, restricting the lateral movement of the coil spring so that the coil spring is stably held between the gland 4 and the spring seat 8.

Wherein the pressing cover 4 is provided with a liquid inlet hole communicated with the main body pipe 13, and the connection pipe fitting includes a liquid inlet joint 5 partially inserted into the liquid inlet hole. As shown in fig. 1 and 2, the inlet connector 5 is inserted into the gland 4, and the inlet connector 5 is communicated with other liquid inlet pipes to convey fluid to the main pipe 13 and the liquid outlet pipe 2.

Further, the support base 3 includes a flange 15 connected to an outer peripheral surface of the inlet end of the main tube 13, and the gland 4 is detachably connected to the flange 15. As shown in fig. 2, a flange 15 extending radially outward is connected to the upper end of the main tube 13, and the gland 4 is engaged with the disk surface of the flange 15, and the gland 4 may be fixed to the flange 15 by bolts 6. Wherein, the side of the gland 4 facing the main pipe 13 is formed with a positioning flange, the positioning flange is inserted into the main pipe 13, the main pipe 13 limits the transverse movement of the positioning flange, realizes the relative positioning of the gland 4, and is convenient for connecting the gland 4 and the flange 15 through the bolt 6. A sealing gasket 9 surrounding the central axis of the main body pipe 13 is arranged between the gland 4 and the flange 15 to form a static seal and prevent the fluid inside from leaking outwards.

In addition, the outlet end of the liquid outlet pipe 2 is connected with a liquid outlet elbow 1. The direction of the outlet end of the liquid outlet elbow 1 corresponds to the radial direction of the liquid outlet pipe 2, and when the liquid outlet pipe 2 rotates around the central axis of the supporting seat 3 relative to the supporting seat, the direction of the outlet end of the liquid outlet elbow 1 changes to adapt to the direction of a connected pipe fitting. The liquid outlet elbow 1 can be connected with the liquid outlet pipe 2 in a threaded manner. In other embodiments, the outlet end of the outlet pipe 2 is formed as an elbow, or the outlet elbow 1 is integrally connected to the outlet pipe 2.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the specific features in any suitable way, and the invention will not be further described in relation to the various possible combinations in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims

1. The connecting pipe fitting is characterized by comprising a supporting seat (3), a liquid outlet pipe (2) and a rigid sealing ring (7), wherein the supporting seat (3) comprises a main pipe (13) and an annular flange (14) arranged on the inner circumferential surface of the outlet end of the main pipe (13), a part of the liquid outlet pipe (2) is rotatably inserted into the main pipe (13), a shaft shoulder (16) positioned in the main pipe (13) is arranged on the periphery of the liquid outlet pipe (2), and the sealing ring (7) is positioned among the liquid outlet pipe (2), the shaft shoulder (16), the main pipe (13) and the flange (14).

2. Connecting tube according to claim 1, characterized in that the sealing ring (7) is provided on its outer circumference with an annular groove in which a resilient sealing ring (12) is accommodated.

3. Connecting tube according to claim 1, characterized in that the shoulder (16) has a tapered outer circumference in the direction from the inlet to the outlet, the sealing ring (7) being in sealing engagement with the tapered outer circumference of the shoulder (16).

4. Connecting tube according to claim 1, characterized in that it comprises a rigid slide ring (11) which is placed over the outlet pipe (2), the slide ring (11) being located on the side of the shoulder (16) facing the inlet of the outlet pipe (2), the slide ring (11) being in sealing engagement with the annular end face of the shoulder (16), the outer circumferential face of the outlet pipe (2) and the inner circumferential face of the main body pipe (13).

5. Connecting tube according to claim 4, characterized in that the sliding ring (11) and the sealing ring (7) are made of ceramic.

6. Connecting tube according to claim 4, characterized in that it comprises a gland (4) connected to the inlet end of the main tube (13) and a spring (10) between the gland (4) and the slide ring (11).

7. Connecting tube according to claim 6, characterized in that the spring (10) is a helical spring, the connecting tube comprising a spring seat (8) between the spring (10) and the slide ring (11), the spring seat (8) being formed with an annular groove which receives an end of the spring (10).

8. Connecting tube according to claim 6, characterized in that the gland (4) is provided with an inlet opening communicating with the main tube (13), the connecting tube comprising an inlet joint (5) partially inserted in the inlet opening.

9. Connecting tube according to claim 6, characterized in that the bearing block (3) comprises a flange (15) connected to the outer circumference of the inlet end of the main tube (13), the gland (4) being detachably connected to the flange (15).

10. Connecting tube according to claim 1, characterized in that the outlet end of the outlet pipe (2) is connected with an outlet elbow (1).