CN112815168A - Bidirectional anti-drop sealed pipe connecting structure - Google Patents

Abstract

The invention relates to a bidirectional anti-drop sealed pipe connecting structure. The pipe fitting comprises at least two pipes, wherein one pipe is connected with a first socket section, and the other pipe is connected with a second socket section; still including can the cover arrange in first socket section and second socket section periphery be used for with the tubulose connector that both are connected in, the inside spacing inner flange that is equipped with of tubulose connector, the inside cavity of tubulose connector forms first cooperation groove and second cooperation groove, all is equipped with sealing washer and anticreep piece between first cooperation groove of first socket section and between second socket section and the second cooperation groove. According to the invention, the first socket section and the second socket section of the two pipes are connected through the tubular connector, and sealing and anti-falling are carried out through the two groups of sealing rings and the anti-falling piece, so that the whole connection operation is simple and rapid, the manufacturing cost is low, the axial rebound of the pipes driven by the sealing rings can be effectively prevented, the sealing effect is ensured, the pipes cannot be separated even after geological settlement in the later period, and the service life is long.

Description

Bidirectional anti-drop sealed pipe connecting structure

Technical Field

The invention relates to the field of pipes, in particular to a bidirectional anti-falling sealed pipe connecting structure.

Background

The corrugated pipe has the advantages of good pressure resistance, low construction cost, light weight, quick and convenient construction and the like, and is widely applied to the field of drainage. For convenient transportation, the length of each section of corrugated pipe cannot be too long, and the sections of corrugated pipe are transported to a construction site and then connected. The connection mode of the existing corrugated pipe is generally plug-in type or flange connection type. The plug-in type connection mode is as follows: and installing a rubber sealing ring at the second wave trough of the socket section, coating a lubricant, and then directly inserting the socket, wherein the socket needs to be in the reverse water flow direction and the socket section needs to be in the water flow direction. The flange connection mode requires more connecting parts such as flanges and bolt assemblies, and the operation of workers is very troublesome, and the construction cost is high.

Disclosure of Invention

The invention aims to: overcome above shortcoming and provide a two-way anticreep sealed tubular product connection structure, this structure is connected the first socket section and the second socket section of two tubular products through the tubulose connector to seal the anticreep through two sets of sealing washers and anticreep piece, not only the integral connection easy operation is quick, and the cost is cheap, can drive the tubular product axial by having prevented effectively moreover and kick-backed, guaranteed sealed effect, even later stage geology subsides also can not throw off long service life.

The invention is realized by the following technical scheme: the utility model provides a two-way anticreep sealed tubular product connection structure which characterized in that: the connecting pipe comprises at least two pipes, wherein a tubular first socket section is fixedly connected to one end port of one pipe, and a tubular second socket section is fixedly connected to one end port of the other pipe;

the pipe connecting assembly further comprises a tubular connector which can be sleeved on the peripheries of the first socket section and the second socket section and is used for connecting the first socket section and the second socket section, an inner hollow hole of the tubular connector extends to openings at two axial ends, a limiting inner flange which protrudes towards the direction close to the axis is further arranged in the middle of the hole wall of the inner hollow hole of the tubular connector, a first matching groove is formed from one axial end port of an inner cavity of the tubular connector to the position of the limiting inner flange, a second matching groove is formed from the other axial end port of the inner cavity of the tubular connector to the position of the limiting inner flange, the first socket section and the second socket section are respectively matched, inserted and connected into the first matching groove and the second matching groove, and the axial outer end walls of the first socket section and the second socket section are respectively pressed against two axial end walls of the limiting inner flange;

all be equipped with along the axial sealing washer and the anticreep piece that sets gradually between first socket section periphery wall and first cooperation inslot internal perisporium and between second socket section periphery wall and the second cooperation inslot internal perisporium, the anticreep piece is used for preventing that first socket section is first cooperation groove relatively or second socket section is second cooperation groove relatively outwards deviate from along axial direction.

Preferably, the peripheral walls of the first socket section and the second socket section are respectively provided with a sealing ring groove which is arranged around the peripheral walls and used for installing a sealing ring and an anti-falling part groove used for installing an anti-falling part, the sealing ring groove is positioned at the position close to the outer port of the first socket section or the second socket section, and the anti-falling part groove is positioned at the position far away from the outer port of the first socket section or the second socket section;

the sealing rings are arranged in the corresponding sealing ring grooves in a tight fit manner, the outer peripheral parts of the sealing rings are exposed out of the sealing ring grooves, and the outer peripheral parts of the sealing rings are connected to the inner peripheral walls of the first matching grooves or the second matching grooves in a tight fit manner;

the inner peripheral walls of the first matching groove and the second matching groove close to the outer end openings of the tubular connector are provided with limiting clamping grooves with the inner diameters of the groove walls larger than the inner diameters of the pipe walls of the first matching groove or the second matching groove, the anti-drop piece comprises an anti-drop body which can be fixedly arranged in the corresponding anti-drop piece groove and more than one elastic anti-drop body which is fixedly arranged on the peripheral wall of the anti-drop body and exposes out of the anti-drop piece groove, thereby elasticity that elasticity anticreep body has makes it can contract or laminate on the anticreep body when receiving to press on thereby make anticreep spare can follow first socket section or second socket section and reachd through first cooperation groove or the outside port of second cooperation groove and correspond spacing joint recess position, later can reset tightly under self elastic action and make first socket section or second socket section can not deviate from by first cooperation groove or second cooperation groove axial relatively in spacing joint recess.

Preferably, the anti-drop body is annular, and the number of the elastic anti-drop bodies is more than two and the elastic anti-drop bodies are sequentially distributed along the circumferential direction of the outer peripheral wall of the anti-drop body; the bottom of each elastic anti-falling body is fixedly connected to the anti-falling body, and after the elastic anti-falling bodies are installed in place in the limiting clamping grooves, the elastic anti-falling bodies gradually incline to the direction far away from the axis in the process of extending from the fixed connection part to the direction far away from the outer port of the first socket section or the second socket section; and the groove wall of one side of the limiting clamping groove, which is close to the external port of the adjacent tubular connector, is a conical abutting wall for abutting against with the elastic anti-falling body in a matching manner, and the inner diameter of the pipe wall of the conical abutting wall, which is close to the external port of the adjacent tubular connector, is smaller than the inner diameter of the pipe wall, which is far away from the external port of the adjacent tubular connector.

Preferably, the anti-drop body is provided with a notch which can break the inner and outer walls of the ring body and is used for facilitating the anti-drop body to be installed in the corresponding anti-drop part groove.

In order to facilitate the positioning and installation of the anti-release piece, more than one positioning rib extending along the axial direction parallel to the first socket section or the second socket section is arranged above the bottom wall of the groove of the anti-release piece, and when the number of the positioning ribs is more than two, the positioning ribs are arranged at intervals along the circumferential direction of the positioning ribs;

the internal perisporium of anticreep body is equipped with the constant head tank that corresponds with the equal phase-match in quantity and the position of location muscle in the anticreep piece recess, the constant head tank is internal sunken to the anticreep body along the direction of keeping away from the axis.

Preferably, the outer diameters of the first socket section and the second socket section are smaller than the outer diameter of the pipe, and the first socket section and the second socket section are the same in shape and size.

Preferably, the periphery wall of first socket section and second socket section is the bellows structure that crest and trough set up in proper order in turn for following axial direction of extension, the sealing washer recess comprises a trough that first socket section and second socket section are close to the outer port, anticreep spare recess comprises one of them trough that the outer port was kept away from to first socket section and second socket section.

Preferably, the periphery wall of tubular product is the bellows structure that crest and trough set up in proper order in turn along axial direction of extension, the square ring shape that the chamfer was handled is done for four angles in the cross-section of crest position of bellows, and the trough position is the ring form in the cross-section of radial direction.

In order to make this connection structure keep the uniformity, the shape size of tubulose connector periphery wall cooperatees the square form that corresponds for the shape size with tubular product crest position periphery wall, and the quantity of spacing joint recess is four in first cooperation groove and second cooperation groove are separately to four spacing joint recesses in the same cooperation groove set up at the position corresponding with four angles of tubulose connector periphery wall along circumferencial direction interval distribution.

Preferably, the other axial end of each pipe is also fixedly connected with the first socket section or the second socket section.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the bidirectional anti-falling sealed pipe connecting structure, the first socket section and the second socket section of the two pipes are connected through the tubular connector, and sealing and anti-falling are performed through the two groups of sealing rings and the anti-falling piece, so that the whole connecting structure is simple and quick in whole connecting operation and low in manufacturing cost, the pipes can be effectively prevented from being axially rebounded by the driving of the sealing rings, the sealing effect is ensured, the pipes cannot be separated even after geological settlement, and the service life is long.

2. According to the bidirectional anti-falling sealed pipe connecting structure, the anti-falling body of the anti-falling part is provided with the notch in a C shape, so that the anti-falling part can be conveniently installed on the groove of the anti-falling part.

3. The invention relates to a bidirectional anti-drop sealed pipe connecting structure, wherein the appearance of a tubular connector is consistent with that of a pipe, and the consistency of the appearance of the whole pipeline system can be ensured.

4. According to the bidirectional anti-falling sealed pipe connecting structure, the positioning ribs are arranged in the grooves of the anti-falling parts, and the positioning grooves matched with the positioning ribs are formed in the anti-falling parts, so that the anti-falling parts are conveniently positioned and installed, and the relative rotation between the anti-falling parts and the pipes can be limited.

5. According to the bidirectional anti-falling sealed pipe connecting structure, the first socket section and the second socket section are both in the shape of the corrugated pipe, the anti-falling part groove and the sealing ring groove are formed by one wave trough of the corrugated pipe, so that the process engineering can be simplified, and the manufacturing cost can be saved.

6. According to the bidirectional anti-falling sealed pipe connecting structure, the two ends of the pipe are both made into the socket sections, the pipe flaring process (namely the process of making a bell mouth) can be cancelled in the actual production process, and the tubular connector can be directly cut off from the pipe for use, so that the production and manufacturing cost can be greatly reduced, and the production process can be simplified.

Drawings

FIG. 1 is an exploded view of a bi-directional anti-separation sealed pipe connection structure according to the present invention;

FIG. 2 is a side view of a bi-directional anti-separation sealed pipe connection according to the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view of B in FIG. 3;

FIG. 5 is a first schematic view of a tube of the bi-directional anti-separation sealed tube connection structure according to the present invention;

FIG. 6 is a second schematic structural view of a tube in the two-way anti-separation sealed tube connection structure according to the present invention;

FIG. 7 is an enlarged view of C in FIG. 6;

FIG. 8 is a schematic structural view of an anti-separation member in a bi-directional anti-separation sealed pipe connection structure according to the present invention;

FIG. 9 is a first schematic structural view of a tubular connector in the two-way anti-separation sealed pipe connection structure according to the present invention;

FIG. 10 is a second schematic structural view of a tubular connector in the two-way anti-separation sealed pipe connection structure according to the present invention;

fig. 11 is a cross-sectional view of D-D in fig. 10.

Description of reference numerals: 1-pipe, 11-first socket section, 12-second socket section, 13-sealing ring groove, 14-anti-falling part groove, 2-tubular connector, 21-limiting inner flange, 22-first matching groove, 23-second matching groove, 24-limiting clamping groove, 241-conical pressing wall, 3-sealing ring, 4-anti-falling part, 41-anti-falling body, 42-elastic anti-falling body, 43-notch, 44-positioning groove and 5-positioning rib.

Detailed Description

The invention is described in detail below with reference to the following description of the drawings:

as shown in fig. 1-11, a two-way anti-drop sealed pipe connection structure is characterized in that: the pipe fitting comprises at least two pipes 1, wherein a tubular first socket section 11 is fixedly connected to one end port of one pipe 1, and a tubular second socket section 12 is fixedly connected to one end port of the other pipe 1;

the pipe connecting assembly also comprises a tubular connector 2 which can be sleeved on the peripheries of the first socket section 11 and the second socket section 12 and is used for connecting the first socket section and the second socket section, the inner hollow hole of the tubular connector 2 extends to the openings at two axial ends, the middle position of the hole wall of the inner hollow hole of the tubular connector 2 is also provided with a limiting inner flange 21 which protrudes towards the direction close to the axis, the inner cavity of the tubular connector 2 forms a first matching groove 22 from the axial end port to the position of the limiting inner flange 21, the inner cavity of the tubular connector 2 forms a second matching groove 23 from the other axial port to the position of the limiting inner flange 21, the first socket section 11 and the second socket section 12 are respectively inserted and connected in the first matching groove 22 and the second matching groove 23, the axial outer end walls of the first socket section 11 and the second socket section 12 are respectively pressed against the two axial end walls of the limiting inner flange 21;

all be equipped with along the axial sealing washer 3 and the anticreep piece 4 that sets gradually between first socket section 11 periphery wall and the interior perisporium of first cooperation groove 22 and between the periphery wall of second socket section 12 periphery wall and second cooperation groove 23, anticreep piece 4 is used for preventing that first socket section 11 outwards deviates from along the axial direction relative first cooperation groove 22 or second socket section 12 relative second cooperation groove 23.

Preferably, the peripheral walls of the first socket section 11 and the second socket section 12 are provided with a sealing ring groove 13 for installing the sealing ring 3 and a retaining piece groove 14 for installing the retaining piece 4, which are arranged around the peripheral walls, the sealing ring groove 13 is located near the outer port of the first socket section 11 or the second socket section 12, and the retaining piece groove 14 is located far away from the outer port of the first socket section 11 or the second socket section 12;

the seal rings 3 are tightly installed in the corresponding seal ring grooves 13 in a matching mode, the outer peripheral parts of the seal rings are exposed out of the seal ring grooves 13, and the outer peripheral parts of the seal rings are tightly connected to the inner peripheral walls of the first matching grooves 22 or the second matching grooves 23 in a matching mode;

the tubular connector 2 is provided with a limiting clamping groove 24 with the inner diameter of the groove wall larger than the inner diameter of the pipe wall of the first matching groove 22 or the second matching groove 23 on the inner peripheral wall of the first matching groove 22 and the second matching groove 23 close to the outer end opening thereof, the anti-slip part 4 comprises an anti-slip body 41 which can be fixedly arranged in the corresponding anti-slip part groove 14 and more than one elastic anti-slip body 42 which is fixedly arranged on the peripheral wall of the anti-slip body 41 and exposes out of the anti-slip part groove 14, elasticity that elasticity anticreep body 42 has makes it can contract or laminate to anticreep body 41 when receiving to press on thereby making anticreep piece 4 can follow first socket section 11 or second socket section 12 and pass through first cooperation groove 22 or the outside port of second cooperation groove 23 and reach the position that corresponds spacing joint recess 24 place, later can reset under self elastic action and support tightly in spacing joint recess 24 and make first socket section 11 or second socket section 12 can not deviate from by first cooperation groove 22 or the axial of second cooperation groove 23 relatively.

Preferably, the retaining body 41 is annular, and the number of the elastic retaining bodies 42 is two or more and is sequentially arranged along the circumferential direction of the outer circumferential wall of the retaining body 41; the bottom of each elastic anti-release body 42 is fixedly connected to the anti-release body 41, and after the elastic anti-release body 42 is installed in place in the limiting clamping groove 24, the elastic anti-release body 42 gradually inclines towards the direction away from the axis in the process of extending from the fixed connection part to the direction away from the outer port of the first socket section 11 or the second socket section 12; and the groove wall of one side of the limiting clamping groove 24 close to the external port of the adjacent tubular connector 2 is a conical abutting wall 241 for abutting against with the elastic anti-release body 42 in a matching manner, and the inner diameter of the pipe wall of the conical abutting wall 241 close to the external port of the adjacent tubular connector 2 is smaller than the inner diameter of the pipe wall of the external port of the tubular connector 2 far away from the adjacent tubular connector.

Preferably, the retaining body 41 is provided with a gap 43 capable of breaking the inner and outer peripheral walls of the ring body for facilitating the installation of the retaining body 41 into the corresponding retaining member groove 14.

In order to facilitate positioning and installation of the anti-release piece, more than one positioning rib 5 extending in the axial direction parallel to the first socket section 11 or the second socket section 12 is arranged above the bottom wall of the groove 14 of the anti-release piece, and when the number of the positioning ribs 5 is more than two, the positioning ribs 5 are arranged at intervals in the circumferential direction where the positioning ribs are located;

the internal perisporium of anticreep body 41 is equipped with the constant head tank 44 that corresponds with the equal phase-match in quantity and the position of location muscle 5 in anticreep piece recess 14, constant head tank 44 is internal sunken to anticreep body 41 along the direction of keeping away from the axis.

Preferably, the outer diameters of the first socket section 11 and the second socket section 12 are smaller than the outer diameter of the pipe 1, and the first socket section 11 and the second socket section 12 are the same in shape and size.

Preferably, the outer peripheral walls of the first socket section 11 and the second socket section 12 are corrugated tube structures with wave crests and wave troughs alternately arranged in sequence along the axial extending direction, the seal ring groove 13 is formed by one wave trough of the first socket section 11 and the second socket section 12 close to the outer port, and the anti-dropping part groove 14 is formed by one wave trough of the first socket section 11 and the second socket section 12 far away from the outer port.

Preferably, the periphery wall of the pipe 1 is a corrugated pipe structure with wave crests and wave troughs alternately arranged in sequence along the axial extension direction, the cross section of the wave crest position of the corrugated pipe in the radial direction is a square ring with four corners chamfered, and the cross section of the wave trough position in the radial direction is a circular ring.

In order to make this connection structure keep the uniformity, the shape size of 2 periphery walls of tubulose connector is for the square form that matches the correspondence with the shape size of 1 crest position periphery wall of tubular product, and the quantity of spacing joint recess 24 is four in first cooperation groove 22 and second cooperation groove 23 are separately to four spacing joint recesses 24 in the same cooperation groove set up in the position corresponding with four angles of 2 periphery walls of tubulose connector along circumferencial direction interval distribution.

Preferably, a first socket section 11 or a second socket section 12 is also fixedly connected to the other axial end of each tube 1.

While the invention has been illustrated and described with respect to specific embodiments and alternatives thereof, it will be understood that various changes and modifications can be made without departing from the spirit and scope of the invention. It is understood, therefore, that the invention is not to be in any way limited except by the appended claims and their equivalents.

Claims (10)

1. The utility model provides a two-way anticreep sealed tubular product connection structure which characterized in that: the pipe joint comprises at least two pipes (1), wherein a tubular first socket section (11) is fixedly connected to one end port of one pipe (1), and a tubular second socket section (12) is fixedly connected to one end port of the other pipe (1);

the pipe connecting assembly further comprises a tubular connector (2) which can be sleeved on the peripheries of the first socket section (11) and the second socket section (12) and is used for connecting the first socket section and the second socket section, an inner hollow hole of the tubular connector (2) extends to openings at two axial ends, a limiting inner flange (21) protruding towards the direction close to the axis is further arranged at the middle position of the hole wall of the inner hollow hole of the tubular connector (2), a first matching groove (22) is formed from one axial end port of an inner cavity of the tubular connector (2) to the position of the limiting inner flange (21), a second matching groove (23) is formed from the other axial end port of the inner cavity of the tubular connector (2) to the position of the limiting inner flange (21), and the first socket section (11) and the second socket section (12) are respectively matched and inserted and connected in the first matching groove (22) and the second matching groove (23) in an inserting mode, the axial outer end walls of the first socket section (11) and the second socket section (12) are respectively pressed against the two axial end walls of the limiting inner flange (21);

between first socket section (11) periphery wall and first cooperation groove (22) internal perisporium and all be equipped with along axially between second socket section (12) periphery wall and second cooperation groove (23) internal perisporium sealing washer (3) and anticreep piece (4) that set gradually, anticreep piece (4) are used for preventing that first socket section (11) from outwards deviating from along axial direction relative first cooperation groove (22) or second socket section (12) relative second cooperation groove (23).

2. The bidirectional anti-drop sealed pipe connecting structure according to claim 1, characterized in that: the outer peripheral walls of the first socket section (11) and the second socket section (12) are respectively provided with a sealing ring groove (13) which is arranged around the outer peripheral wall and used for installing a sealing ring (3) and an anti-falling part groove (14) used for installing an anti-falling part (4), the sealing ring groove (13) is positioned close to the outer port of the first socket section (11) or the second socket section (12), and the anti-falling part groove (14) is positioned far away from the outer port of the first socket section (11) or the second socket section (12);

the sealing rings (3) are installed in the corresponding sealing ring grooves (13) in a close fit mode, the outer peripheral portions of the sealing rings are exposed out of the sealing ring grooves (13), and the outer peripheral portions of the sealing rings are connected to the inner peripheral wall of the first matching groove (22) or the second matching groove (23) in a close fit mode;

the tubular connector (2) is provided with a limiting clamping groove (24) with the inner diameter of the groove wall larger than the inner diameter of the pipe wall of the first matching groove (22) or the second matching groove (23) on the inner peripheral wall of the first matching groove (22) and the second matching groove (23) close to the outer port of the tubular connector, the anti-falling part (4) comprises an anti-falling body (41) which can be fixedly arranged in the corresponding anti-falling part groove (14) and more than one elastic anti-falling body (42) which is fixedly arranged on the outer peripheral wall of the anti-falling body (41) and exposes out of the anti-falling part groove (14), the elastic anti-falling body (42) has elasticity which enables the anti-falling part (4) to contract or be attached to the anti-falling body (41) when pressed, so that the anti-falling part (4) can follow the position of the first inserting section (11) or the second inserting section (12) and reach the corresponding limiting clamping groove (24) through the outer port of the first matching groove (, and then the first socket section (11) or the second socket section (12) can be restored and tightly propped in the limiting clamping groove (24) under the self elastic action so that the first socket section (11) or the second socket section (12) can not axially deviate relative to the first matching groove (22) or the second matching groove (23).

3. The bidirectional anti-drop sealed pipe connecting structure according to claim 2, characterized in that: the anti-drop body (41) is annular, and the number of the elastic anti-drop bodies (42) is more than two and the elastic anti-drop bodies are sequentially distributed along the circumferential direction of the outer peripheral wall of the anti-drop body (41); the bottom of each elastic anti-falling body (42) is fixedly connected to the anti-falling body (41), and after the elastic anti-falling bodies (42) are installed in place in the limiting clamping grooves (24), the elastic anti-falling bodies (42) gradually incline towards the direction far away from the axis in the process of extending from the fixed connection part to the direction far away from the outer port of the first socket section (11) or the second socket section (12); and the groove wall of one side of the limiting clamping groove (24), which is close to the external port of the adjacent tubular connector (2), is a conical abutting wall (241) which is used for being abutted with the elastic anti-falling body (42) in a matching way, and the inner diameter of the pipe wall, which is close to the external port of the adjacent tubular connector (2), of the conical abutting wall (241) is smaller than the inner diameter of the pipe wall, which is far away from the external port of the adjacent tubular connector (2).

4. The bidirectional anti-drop sealed pipe connecting structure according to claim 3, characterized in that: the anti-drop body (41) is provided with a notch (43) which can be used for disconnecting the inner and outer peripheral walls of the ring body and facilitating the installation of the anti-drop body (41) into the corresponding anti-drop part groove (14).

5. The bidirectional anti-drop sealed pipe connecting structure according to claim 3, characterized in that: more than one positioning rib (5) extending along the axial direction parallel to the first socket section (11) or the second socket section (12) is arranged above the groove bottom wall of the anti-falling part groove (14), and when the number of the positioning ribs (5) is more than two, the positioning ribs (5) are arranged at intervals along the circumferential direction where the positioning ribs are located;

the internal perisporium of anticreep body (41) is equipped with and fixes a position constant head tank (44) that the quantity and the equal phase-match in position of muscle (5) correspond in anticreep spare recess (14), constant head tank (44) are along keeping away from the internal sunken of direction to anticreep body (41) of axis.

6. The bidirectional anti-drop sealed pipe connecting structure according to claim 1, characterized in that: the outer diameters of the first socket section (11) and the second socket section (12) are smaller than the outer diameter of the pipe (1), and the first socket section (11) and the second socket section (12) are identical in shape and size.

7. The bidirectional anti-drop sealed pipe connecting structure according to claim 1, characterized in that: the periphery wall of first socket section (11) and second socket section (12) is the bellows structure that crest and trough set up in proper order in turn for following axial direction of extension, sealing washer recess (13) comprise by a trough that first socket section (11) and second socket section (12) are close to outer port, anticreep spare recess (14) comprise one of them trough that outer port was kept away from by first socket section (11) and second socket section (12).

8. The bidirectional anti-drop sealed pipe connection structure according to any one of claims 1 to 7, characterized in that: the utility model discloses a corrugated pipe, including tubular product (1), the periphery wall of tubular product (1) is the bellows structure that crest and trough set up in proper order in turn for being along axial extending direction, the crest position of bellows is the square ring form that the chamfer was handled for four angles in the cross-section of radial direction, and the trough position is the ring form in the cross-section of radial direction.

9. The bidirectional anti-drop sealed pipe connecting structure according to claim 8, characterized in that: the shape size of tubulose connector (2) periphery wall cooperatees the square form that corresponds for the shape size with tubular product (1) crest position periphery wall, and the quantity of spacing joint recess (24) is four in first cooperation groove (22) and second cooperation groove (23) separately to four spacing joint recesses (24) in the same cooperation groove set up at the position corresponding with four angles of tubulose connector (2) periphery wall along circumferencial direction interval distribution.

10. The bidirectional anti-drop sealed pipe connection structure according to any one of claims 1 to 7, characterized in that: the other axial port of each pipe (1) is also fixedly connected with a first socket section (11) or a second socket section (12).

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