CN210623891U

CN210623891U - Connecting piece of steel-plastic composite pipe

Info

Publication number: CN210623891U
Application number: CN201921594944.0U
Authority: CN
Inventors: 刘润祥
Original assignee: Tianjin Xinzehao Steel Plastic Composite Pipe Co Ltd
Current assignee: Tianjin Xinzehao Steel Plastic Composite Pipe Co Ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-05-26
Anticipated expiration: 2029-09-24

Abstract

The utility model discloses a connecting piece of compound pipe is moulded to steel, including two compound pipes and a connecting pipe, the equal fixedly connected with ring flange of one end of two compound pipes, the connecting pipe setting is between two compound pipes, and the four corners at connecting pipe both ends all alternates and is connected with the bolt, and eight bolts pass the four corners of two ring flanges respectively, and the outside of eight bolts is threaded connection respectively has the nut, is provided with stop gear between two ring flanges, and stop gear comprises four spacing grooves and four gag lever posts. This kind of connecting piece of compound pipe is moulded to steel uses through telescopic link, annular slab and reset spring's cooperation, and when making ambient temperature decline sealing washer take place the shrinkage, the annular slab can be at the effect extrusion sealing washer under reset spring restoring force, and then makes the sealing washer receive the extrusion and expand, makes its inner wall and outer wall still laminate with the inside of first ring channel and second ring channel, guarantees its leakproofness.

Description

Connecting piece of steel-plastic composite pipe

Technical Field

The utility model relates to a connecting piece specifically is a connecting piece of compound pipe is moulded to steel.

Background

At present, most steel-plastic composite pipes can be provided with a sealing ring between the steel-plastic composite pipe and a connecting piece when being connected through the connecting piece, and the sealing ring is mostly made of rubber, so that when the ambient temperature drops, the sealing ring is easy to shrink, and the sealing property is reduced. Therefore, we improve the above and propose a connecting piece for steel-plastic composite pipes.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a connecting piece of a steel-plastic composite pipe, which comprises two composite pipes and a connecting pipe, wherein one end of each of the two composite pipes is fixedly connected with a flange plate, the connecting pipe is arranged between the two composite pipes, four corners at two ends of the connecting pipe are respectively penetrated and connected with bolts, eight bolts respectively pass through four corners of the two flange plates, the outer parts of the bolts are respectively connected with nuts by screw threads, a limiting mechanism is arranged between the two flange plates, the limiting mechanism consists of four limiting grooves and four limiting rods, one end of each of the two composite pipes is provided with a first ring groove, a sealing ring is arranged in the first ring groove, the middle part at two ends of the connecting pipe is provided with a second ring groove, a sealing mechanism is arranged in the second ring groove, the sealing mechanism consists of four telescopic rods, a ring plate and four reset springs, and one ends of the four telescopic rods are respectively fixedly connected with four corners of one side in the second annular groove.

As an optimal technical scheme of the utility model, eight the outside of bolt all alternates and is connected with the packing ring, eight the packing ring is located respectively between eight nuts and two ring flanges.

As a preferred technical scheme of the utility model, four the spacing groove is seted up respectively on the top and the bottom of two ring flange opposite sides, four the inside of spacing groove alternates with the outside of four gag lever posts respectively and is connected, four the one end of gag lever post respectively with the top and the bottom fixed connection of connecting pipe both sides.

As an optimized technical scheme of the utility model, the outside of sealing washer and the inside of first ring channel and the inside laminating of second ring channel.

As an optimal technical scheme of the utility model, four the tip of telescopic link and the four corners fixed connection of annular slab one side, the inside of annular slab and the inside sliding connection of second annular groove.

As a preferred technical scheme of the utility model, four reset spring's one end respectively with the four corners fixed connection of annular plate one side, four reset spring's the other end and the four corners fixed connection of the inside one side of second annular groove.

The utility model has the advantages that: this kind of connecting piece of compound pipe is moulded to steel uses through telescopic link, annular slab and reset spring's cooperation, and when making ambient temperature decline sealing washer take place the shrinkage, the annular slab can be at the effect extrusion sealing washer under reset spring restoring force, and then makes the sealing washer receive the extrusion and expand, makes its inner wall and outer wall still laminate with the inside of first ring channel and second ring channel, guarantees its leakproofness.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a connecting member of a steel-plastic composite pipe according to the present invention;

FIG. 2 is a schematic cross-sectional view of the connecting pipe in FIG. 1 of the connecting member for steel-plastic composite pipe according to the present invention;

fig. 3 is an enlarged schematic structural view of a point a in fig. 2 of the connecting member for a steel-plastic composite pipe according to the present invention.

In the figure: 1. a composite pipe; 2. a flange plate; 3. a connecting pipe; 4. a bolt; 5. a gasket; 6. a nut; 7. a limiting groove; 8. a limiting rod; 9. a first annular groove; 10. a second annular groove; 11. a seal ring; 12. a telescopic rod; 13. an annular plate; 14. a return spring.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in fig. 1, fig. 2 and fig. 3, the utility model relates to a connecting piece of steel-plastic composite pipe, including two composite pipe 1 and a connecting pipe 3, the equal fixedly connected with ring flange 2 of one end of two composite pipe 1, connecting pipe 3 sets up between two composite pipe 1, the four corners at connecting pipe 3 both ends all alternates and is connected with bolt 4, eight bolt 4 pass the four corners of two ring flange 2 respectively, there is nut 6 outside difference threaded connection of eight bolt 4, be provided with stop gear between two ring flange 2, stop gear comprises four spacing grooves 7 and four gag lever post 8, first ring channel 9 has all been seted up to one end of two composite pipe 1, the inside of first ring channel 9 is provided with sealing washer 11, second ring channel 10 has all been seted up at the middle part at connecting pipe 3 both ends, the inside of second ring channel 10 is provided with sealing mechanism, sealing mechanism is by four telescopic links 12, An annular plate 13 and four reset springs 14, and one end of four telescopic links 12 is respectively with the four corners fixed connection of the inside one side of second annular groove 10.

Wherein, eight bolts 4's outside all alternates and is connected with packing ring 5, and eight packing rings 5 are located respectively between eight nuts 6 and two ring flanges 2, and elasticity through packing ring 5 makes the screw thread on the nut 6 can with the close laminating of the screw thread on the bolt 4, prevents that nut 6 is not hard up.

Wherein, four spacing grooves 7 are seted up respectively on the top and the bottom of two ring flanges 2 opposite sides, the inside of four spacing grooves 7 alternates with four gag lever post 8's outside respectively and is connected, four gag lever post 8's one end respectively with the top and the bottom fixed connection of connecting pipe 3 both sides, use through spacing groove 7 and gag lever post 8's cooperation, when making ring flange 2 be connected with connecting pipe 3, gag lever post 8 can insert the inside of spacing groove 7 and carry on spacingly to connecting pipe 3, make it can not rotate, thereby made things convenient for people to aim at the screw hole on connecting pipe 3 and the ring flange 2, made things convenient for people to install.

Wherein, the outside of sealing washer 11 and the inside laminating of first annular groove 9 and the inside of second annular groove 10 have strengthened the leakproofness between connecting pipe 3 and compound pipe 1 through sealing washer 11.

Wherein, the tip of four telescopic links 12 and the four corners fixed connection of annular plate 13 one side, the inside of annular plate 13 and the inside sliding connection of second annular groove 10, through telescopic link 12, annular plate 13 and reset spring 14's cooperation is used, when making ambient temperature decline sealing washer 11 take place the shrinkage, annular plate 13 can be at 14 restoring force effect extrusion sealing washer 11 down of reset spring, and then make sealing washer 11 receive the extrusion and expand, make its inner wall and outer wall still laminate with the inside of first annular groove 9 and second annular groove 10, guarantee its leakproofness.

Wherein, four reset spring 14's one end respectively with the four corners fixed connection of annular plate 13 one side, four reset spring 14's the other end and the four corners fixed connection of the inside one side of second annular groove 10, through reset spring 14's restoring force, when making sealing washer 11 take place the shrinkage, annular plate 13 can extrude sealing washer 11, makes its inflation, guarantees the leakproofness.

When the connecting pipe works, firstly, the connecting pipe 3 is placed between the two flange plates 2, the four limiting rods 8 on the connecting pipe 3 are respectively inserted into the four limiting grooves 7, the two sealing rings 11 in the two second annular grooves 10 are respectively inserted into the two first annular grooves 9, firstly, the threaded holes on the connecting pipe 3 are aligned with the threaded holes on the two flange plates 2, the eight bolts 4 respectively penetrate through the threaded holes on the connecting pipe 3 and the two flange plates 2, the eight gaskets 5 are respectively sleeved outside the eight bolts 4, then the eight nuts 6 are respectively rotated to the outside of the eight bolts 4, the connecting pipe 3 is connected with the two flange plates 2, the eight return springs 14 are extruded through the two sealing rings 11 and the two annular plates 13, when the ambient temperature drops and the two sealing rings 11 shrink, the two annular plates 13 extrude the two sealing rings 11 under the restoring force of the eight return springs 14, so that the sealing rings are extruded and expanded, and the inner walls and the outer walls of the two sealing rings 11 are still attached to the inner parts of the two first annular grooves 9 and the two second annular grooves 10, thereby ensuring the sealing performance.

Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A connecting piece of a steel-plastic composite pipe comprises two composite pipes (1) and a connecting pipe (3), and is characterized in that one end of each of the two composite pipes (1) is fixedly connected with a flange (2), the connecting pipe (3) is arranged between the two composite pipes (1), four corners at two ends of the connecting pipe (3) are respectively and alternately connected with bolts (4), eight bolts (4) respectively penetrate through four corners of the two flanges (2), the outer parts of the eight bolts (4) are respectively in threaded connection with nuts (6), a limiting mechanism is arranged between the two flanges (2), the limiting mechanism consists of four limiting grooves (7) and four limiting rods (8), one end of each of the two composite pipes (1) is provided with a first annular groove (9), a sealing ring (11) is arranged inside the first annular groove (9), second ring channel (10) have all been seted up at the middle part at connecting pipe (3) both ends, the inside of second ring channel (10) is provided with sealing mechanism, sealing mechanism comprises four telescopic link (12), an annular slab (13) and four reset spring (14), four the one end of telescopic link (12) respectively with the four corners fixed connection of the inside one side of second ring channel (10).

2. The connecting piece for steel-plastic composite pipes according to claim 1, characterized in that washers (5) are inserted and connected to the outside of each of the eight bolts (4), and the eight washers (5) are respectively located between the eight nuts (6) and the two flanges (2).

3. The connecting member for steel-plastic composite pipes according to claim 1, wherein four of the limiting grooves (7) are respectively formed at the top and bottom ends of the two flanges (2), the inner portions of the four limiting grooves (7) are respectively connected with the outer portions of four limiting rods (8) in an inserting manner, and one ends of the four limiting rods (8) are respectively fixedly connected with the top and bottom ends of the two sides of the connecting pipe (3).

4. A connection piece for steel-plastic composite pipes according to claim 1, characterized in that the outer part of the sealing ring (11) is fitted with the inner part of the first annular groove (9) and the inner part of the second annular groove (10).

5. The connecting piece for steel-plastic composite pipes according to claim 1, wherein the ends of the four telescopic rods (12) are fixedly connected with the four corners of one side of the annular plate (13), and the inside of the annular plate (13) is slidably connected with the inside of the second annular groove (10).

6. The connecting member for steel-plastic composite pipes according to claim 1, wherein one end of each of the four return springs (14) is fixedly connected to the four corners of one side of the annular plate (13), and the other end of each of the four return springs (14) is fixedly connected to the four corners of one side of the inside of the second annular groove (10).