CN111140711A

CN111140711A - Bundle section structure based on integral rubber ring and preparation method thereof

Info

Publication number: CN111140711A
Application number: CN201911150300.7A
Authority: CN
Inventors: 叶柃; 张淑娴; 姜夏云; 翁赟; 邱乾胜
Original assignee: Zhejiang Xinzhou Bamboo Based Composites Technology Co Ltd
Current assignee: Zhonglin Xinzhou Bamboo Winding Development Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-05-12

Abstract

The invention discloses a bundle section structure based on an integral rubber ring and a preparation method thereof, belonging to the technical field of bamboo composite pipe connection, wherein the arrangement of an inner liner in the bundle section structure can be effectively avoided through the corresponding arrangement of the integral rubber ring, the preparation process of the bundle section structure is simplified, the risk of leakage is avoided, and a reliable reinforcing layer can be formed on the periphery of the integral rubber ring through the corresponding arrangement of a connecting groove at the upper end part of the periphery of the integral rubber ring, a port baffle table and a bamboo skin layer, so that the bundle section structure with strong integrity and good sealing performance is obtained. The binding structure provided by the invention is simple in structure and convenient and fast in preparation method, can effectively simplify the preparation process of the binding structure, improve the preparation efficiency, reduce the preparation cost, has high strength and good sealing property, can effectively ensure the strength and the sealing property of the bamboo composite pipe connecting structure, prolongs the service life of the bamboo composite pipe connecting structure, reduces the application cost and the maintenance cost of the bamboo composite pipe, and has good practical value and popularization value.

Description

Bundle section structure based on integral rubber ring and preparation method thereof

Technical Field

The invention belongs to the technical field of connection of bamboo composite pipes, and particularly relates to a bundle joint structure based on an integral rubber ring and a preparation method thereof.

Background

The pipeline is widely applied in daily life and industrial production of people. Common pipeline connection modes include threaded connection, flange connection, welding, pipeline socket connection, ferrule type connection, hot melt connection, groove connection and the like. These connections are widely used in various kinds of pipe work in many fields. However, bamboo composite pipes are mainly made of bamboo, and due to the particularity of bamboo, the existing connection method cannot be effectively applied.

In view of this, in the prior application CN 104266017a of the applicant, a method for manufacturing a tube bundle section for connecting bamboo composite tubes, an installation method and the tube bundle section are provided, wherein the connection of the bamboo composite tubes can be effectively realized through a specially designed tube bundle section structure, and the connection requirement of the bamboo composite tubes is met to a certain extent. However, the applicant finds that the above-mentioned joint has the defects of stress concentration and poor forming quality when in use, so that the connection structure of the bamboo composite pipe is correspondingly improved in the subsequent patent CN 110375134 a, the sealing ring is correspondingly arranged at the end of the connection pipeline, the stress concentration at the position where the joint is provided with the sealing ring is avoided to a certain extent, and the arrangement stability of the connection structure of the bamboo composite pipe is improved.

However, with the further development of the bamboo composite pipe connection technology, the applicant has found that the prior art method of slotting the spigot or the binding and embedding the sealing ring also has obvious defects. Firstly, the preparation process of the binding section or the bamboo composite pipe connecting structure is complicated, the manufacturing and using cost of the product is high, the large-scale popularization of the bamboo composite pipe is not facilitated, and the popularization and the application of the bamboo composite pipe are limited; secondly, in the binding section installation process, the inner liner of binding section is very easily damaged when the binding section contacts with the socket of pipeline, influences the normal use of binding section, makes the structure after the connection have the risk of seepage, leads to the increase of maintenance cost.

Disclosure of Invention

Aiming at one or more of the defects or the improvement requirements in the prior art, the invention provides a binding structure based on an integral rubber ring and a preparation method thereof, wherein the arrangement of an inner liner in the traditional binding structure is effectively avoided through the corresponding arrangement of the integral rubber ring, the arrangement process of the binding structure is simplified, the leakage risk of the binding structure is avoided, the integrity and the strength of the binding structure are effectively ensured, and the reliability and the stability of the connection structure of the bamboo composite pipe are improved.

In order to achieve the above object, in one aspect of the present invention, there is provided a joint structure based on an integral rubber ring, comprising an integral rubber ring and a reinforcing layer sequentially arranged from inside to outside in a radial direction;

the integral rubber ring comprises a body in a tubular structure, an inner baffle table is arranged on the inner peripheral wall surface of the body along the circumferential direction, and at least one protruding thorn is arranged on each inner baffle table along two axial sides of the binding structure;

the burs are annular structures arranged along the inner circumference of the body in the circumferential direction, the outermost sides of the burs are tightly connected with the inner circumferential wall surface of the body, and the end parts of the inner sides of the burs deviate towards one side of the inner baffle table; end connecting grooves are respectively formed in the peripheral wall surfaces of the two ends of the body along the annular direction;

the reinforcing layer is wound and bonded on the peripheral wall surface of the body and comprises a bamboo skin layer and a port baffle table; the two port blocking platforms are respectively arranged on the outer peripheral wall surfaces of the two ends of the body, the two port blocking platforms respectively coat the corresponding end connecting grooves, annular convex rings are respectively formed on the inner peripheral wall surfaces of the two port blocking platforms, and the annular convex rings are embedded into the corresponding end connecting grooves; the thin bamboo strips used for weaving layer sets up two on the body periphery wall between the port keeps off the platform, and its both ends respectively the butt corresponding port keeps off the platform.

As a further improvement of the invention, at least one middle connecting groove is arranged on the peripheral wall surface of the body between the two port blocking platforms;

and a groove filling ring is embedded into the middle connecting groove and is formed by winding and bonding glass fiber materials, and the outer peripheral wall surface of the groove filling ring is tightly attached to and bonded with the inner peripheral wall surface of the thin bamboo strip layer.

As a further improvement of the invention, the outer peripheral wall surface of the groove filling ring protrudes out of the outer peripheral wall surface of the body, and the part of the groove filling ring protruding out of the outer peripheral wall surface of the body extends to two sides of the opening of the middle connecting groove with certain width respectively.

As a further improvement of the present invention, the radial distance between the outer peripheral wall surface of the caulking ring and the outer peripheral wall surface of the body is reduced from the middle portion to both sides.

As a further improvement of the invention, the bamboo skin layer is formed by sequentially and alternately winding and bonding the circumferential bamboo skin and the axial bamboo skin in the radial direction.

As a further improvement of the invention, the innermost side and the outermost side of the bamboo skin layer are respectively formed by winding and bonding annular bamboo skins, and the total winding thickness of the annular bamboo skins is not less than the total winding thickness of the axial bamboo skins.

As a further improvement of the invention, the number of the thorns arranged on the two sides of the inner baffle table is at least two respectively.

As a further improvement of the present invention, an outer peripheral wall surface of the caulking ring protrudes from the notch of the connecting groove and extends to both axial sides of the notch by a certain length.

As a further improvement of the invention, two ends of the body are respectively provided with a flanging; the two flanges are obtained by respectively extending two ends of the body outwards along the radial direction for a certain length and then oppositely extending the two ends of the body for a certain length along the axial direction, and the axially extending length of the flanges is smaller than the axial length of the port blocking platform.

As a further improvement of the present invention, the width of the opening of the connecting groove is smaller than the maximum value of the width of the connecting groove in the axial direction.

As a further improvement of the invention, the cross section of the connecting groove is trapezoidal, and the width of the opening of the connecting groove is equal to the length of the short side of two parallel sides of the trapezoid.

As a further improvement of the invention, the axial thickness of each position of the bur is reduced along with the reduction of the diameter.

In another aspect of the present invention, a method for preparing a bundle node structure is provided, which is used for preparing the bundle node structure based on the integral rubber ring, and comprises the following steps,

(1) forming and preparing an integral rubber ring for later use, wherein an inner baffle table and a protruding thorn are arranged on the inner side of the integral rubber ring, and end connecting grooves are respectively formed in the peripheral wall surfaces of two ends of the integral rubber ring;

(2) installing the integral rubber ring on a special die, winding and bonding the material for forming the port blocking table in the connecting grooves at the two end parts respectively, and continuously forming the port blocking table on the peripheral wall surface of the body outside the connecting grooves at the end parts in a winding and bonding manner after the connecting grooves at the end parts are filled;

(3) a bamboo skin material is wound and bonded on the peripheral wall surface of the body between the two port blocking platforms to form a bamboo skin layer with two ends respectively abutted against the side wall surfaces of the port blocking platforms;

when the middle connecting grooves are formed in the peripheral wall surface of the body between the two end port blocking platforms, before the bamboo skin layer is wound and bonded, glass fiber materials are wound and bonded in the middle connecting grooves until the middle connecting grooves are filled with the glass fiber materials, and then the bamboo skin layer is wound and bonded;

(4) and after the port blocking table and the thin bamboo strip layer are cured and molded, obtaining a reinforcing layer which is integrated with the integral rubber ring, and then demolding to obtain the bundle section structure based on the integral rubber ring.

The above-described improved technical features may be combined with each other as long as they do not conflict with each other.

Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:

(1) according to the binding structure based on the integral rubber ring, the arrangement of the inner liner in the binding structure is effectively avoided through the corresponding arrangement of the integral rubber ring, the preparation process of the binding structure is simplified, the leakage problem caused by the damage of the inner liner in the traditional binding structure is avoided, and the stability and the reliability of the connection structure of the bamboo composite pipe are improved; meanwhile, through the arrangement of the connecting grooves at the upper end parts of the peripheral wall surfaces at the two ends of the integral rubber ring and the corresponding arrangement of the two port blocking platforms, the limitation of the bamboo skin layer in the axial direction can be effectively realized, the separation of the reinforcing layer and the integral rubber ring due to axial acting force or radial acting force is avoided, the integrity of the prepared binding structure is ensured, the strength and the stability of the binding structure are ensured, the service life of the bamboo composite pipe connecting structure is prolonged, and the application cost and the maintenance cost of the bamboo composite pipe are reduced;

(2) according to the binding structure based on the integral rubber ring, the two ends of the integral rubber ring are respectively provided with the flanges, and one end of the port baffle table is covered in the annular groove formed by the flanges, so that the setting stability of the port baffle table is further enhanced, the integral rubber ring is fully prevented from being separated from the reinforcing layer, the integrity, the sealing property and the strength of the binding structure are ensured, and the service life of the binding structure is prolonged;

(3) according to the bundle section structure based on the integral rubber ring, the outer processing layer is wound and bonded on the periphery of the bamboo skin layer, so that the end part of the outer processing layer is lapped on the peripheral wall surface of the end part baffle table, the sealing of a joint between the bamboo skin layer and the port baffle table is effectively realized, the separation of the port baffle table and the bamboo skin layer is avoided, the integrity of the arrangement of the bamboo skin layer and the port baffle table is improved, the service life of the reinforcing layer after arrangement is prolonged, and the reliability of the bundle section structure is ensured;

(4) according to the binding section structure based on the integral rubber ring, the connecting groove is set to be in a form that the opening width is smaller than the maximum width value, and is further preferably set to be in a ring groove structure with the cross section in a trapezoid shape, so that the opening of the connecting groove is the short side of the two parallel sides of the trapezoid, after the connecting groove is correspondingly filled with glass fiber materials, the connecting groove can axially and radially limit the glass fiber layers, the integral rubber ring is prevented from being separated from the reinforcing layer, and the integrity and the stability of the binding section structure are ensured;

(5) the binding structure based on the integral rubber ring is simple in structure, convenient and fast in preparation method, capable of effectively simplifying the preparation process of the binding structure, improving the preparation efficiency and reducing the preparation cost, high in strength and good in sealing performance of the binding structure, capable of effectively guaranteeing the strength and the sealing performance of the bamboo composite pipe connecting structure, prolonging the service life of the bamboo composite pipe connecting structure, reducing the application cost and the maintenance cost of the bamboo composite pipe, and good in practical value and popularization value.

Drawings

FIG. 1 is a structural cross-sectional view of a one-piece rubber ring based knuckle structure in an embodiment of the invention;

FIG. 2 is a cross-sectional view of the beam segment structure of an embodiment of the present invention in operation;

in all the figures, the same reference numerals denote the same features, in particular: 1. an integral rubber ring, 101, a first spur, 102, a second spur, 103, a baffle table, 104, a connecting groove and 105, flanging; 2. a reinforcing layer, 201, a groove filling ring, 202, a bamboo skin layer, 203, a port blocking table, 204, an outer processing layer; 3. pipe, 3a first pipe, 3b second pipe, 301 first seal groove, 302 second seal groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example (b):

referring to fig. 1 and 2, the knot structure of the preferred embodiment of the present invention is composed of an integral rubber ring 1 and a reinforcing layer 2. Wherein, integral rubber ring 1 is including the body that is tubular structure, and this body is formed by temperature resistant rubber preparation, has better temperature resistance and certain elastic deformation performance, and each position of body has certain thickness in footpath to ensure the stability of its structure.

Furthermore, a baffle table 103 with a certain thickness is arranged on the inner side of the middle part of the body along the annular direction and is used for abutting against the end parts of the sockets of the two bamboo composite pipelines to be butted to realize the limit of the sockets; at least one protruding thorn structure is respectively arranged at two sides of the baffle platform 103, the protruding thorn is a circular ring structure arranged along the circular ring direction, the outer side of the circular ring structure corresponding to the outer peripheral wall surface is fixed on the inner peripheral wall surface of the body, and the inner side of the circular ring structure extends out to the side close to the baffle platform 103, as shown in fig. 1; in other words, the burs in the preferred embodiment can be regarded as a convex ring disposed on the inner peripheral wall surface of the body, the outer peripheral wall surface of the convex ring is fixedly connected with the inner wall surface of the body, the thickness of the convex ring along the axial direction is continuously reduced along with the reduction of the diameter, and the distance between each position of the convex ring and the plane where the baffle 103 is located is continuously reduced along with the reduction of the diameter.

Further, in the preferred embodiment, the number of the protrusions on the two sides of the block 103 along the axial direction of the body is at least two, and in the preferred embodiment, the number of the protrusions on any side of the block 103 is 2, that is, the first protrusion 101 and the second protrusion 102, as shown in fig. 1. Obviously, the number of the spurs can be set to not only 2, but also 1 or more than 2 according to actual needs, which can be set correspondingly according to the length of the beam section and the length of the socket. Correspondingly, the first spurs 101 and the second spurs 102 are arranged at intervals in the axial direction, and a groove is arranged along the circumferential direction at one side of each spur close to the baffle 103, so that the inner side of each spur can be correspondingly accommodated in the groove at one side when being acted by radial force, and the corresponding insertion of the socket into the toe can be ensured.

Furthermore, a plurality of connecting grooves 104 are arranged on the outer circumferential wall surface of the body at intervals along the axial direction and are used for stably connecting the outer circumferential wall surface of the body with the reinforcing layer 2, in the preferred embodiment, the connecting grooves 104 are arranged along the circumferential direction, and the number of the connecting grooves is corresponding to the number of the spurs and the blocking platforms; specifically, a connection groove 104 is provided corresponding to each spur, and is correspondingly provided at the outer side of the position where the spur is provided; and two coupling grooves 104 are provided corresponding to the blocking stage 103, which are separately provided on the outer circumferential wall surfaces of both sides of the blocking stage 103, and are preferably symmetrically provided with the blocking stage 103. Further, in the preferred embodiment, the thickness of the body at the position where the connecting groove 104 is opened is not less than the minimum value of the wall thickness of the body at the position where the connecting groove 104 is not opened. Obviously, as can be seen from the content shown in fig. 1, at the connecting groove 104 corresponding to the protruding thorn, due to the protruding thorn, the minimum thickness of the position where the connecting groove 104 is opened can be no less than the thickness of the body of the straight surface portion between two connecting grooves 104; meanwhile, the connecting grooves 104 provided on the outer peripheries of both sides of the blocking platform 103 are not provided with grooves or protruding structures on the inner peripheral wall surface of the body corresponding to the positions where the grooves are provided.

Through the arrangement, the integral rubber ring 1 with the spurs and the blocking platforms can be correspondingly obtained, the length of the integral rubber ring is not less than the sum of the lengths of the socket ends of the two bamboo composite pipes, and the two ends of the integral rubber ring can be respectively sleeved on the peripheries of the sockets of the two bamboo composite pipes, so that the two bamboo composite pipes are correspondingly connected. Meanwhile, the spurs (101, 102) and the baffle table 103 in the integral rubber ring 1 are preferably integrally formed with the body so as to improve the stability and reliability of the stress of the integral rubber ring 1; the arrangement of the spurs and the blocking platforms is simple, the stability is high, and the connection grooves are correspondingly formed in the forming process of the rubber ring or after forming, so that the method is easy to realize by utilizing the prior art, and the preparation process of the beam section is greatly simplified.

Further, a reinforcing layer 2 is correspondingly arranged on the periphery of the body, and the reinforcing layer and the integral rubber ring 1 are correspondingly combined into a tubular joint structure for providing supporting force from the outside to support the integral rubber ring 1 to be in a regular tubular structure. The innermost side of the reinforcement layer 2 is formed with a respective "bulge loop" structure corresponding to each attachment groove 104, which correspondingly embeds and fills the attachment groove 104, as shown in fig. 1. Through the corresponding setting of connecting groove 104 for can realize stable connection between integral rubber ring 1 and the enhancement layer 2, and avoid integral rubber ring 1 and enhancement layer 2 to separate because of receiving the ascending effort of axis direction, ensure the wholeness of beam section structure.

Further preferably, in order to prevent the integral rubber ring 1 from being separated from the reinforcing layer 2 by a radial force, the connecting groove 104 in the preferred embodiment is provided in a form that the opening width is smaller than the maximum value of the width of the connecting groove 104, and further preferably, the width of the opening position of the connecting groove 104 is the minimum value of the width of the connecting groove 104. Specifically, the connecting groove 104 in the preferred embodiment is an annular groove with a trapezoidal cross section, and the width of the opening of the connecting groove 104 exactly corresponds to the length of the short side of the two parallel sides of the trapezoid, as shown in fig. 1. By means of the arrangement, the reinforcing layer 2 and the integral rubber ring 1 can be connected and fastened through the reinforcing layer material embedded into the connecting groove 104, the integral rubber ring 1 is prevented from being separated from the reinforcing layer 2 due to radial force, and the integral rubber ring 1 and the reinforcing layer 2 are guaranteed to be in an integral tubular structure all the time. Of course, in order to ensure the tight connection between the integral rubber ring 1 and the reinforcing layer 2, an adhesive, such as an adhesive resin, may be applied between the inner peripheral wall surface of the reinforcing layer 2 and the outer peripheral wall surface of the integral rubber ring 1, so as to achieve the tight connection between the integral rubber ring 1 and the reinforcing layer 2.

In order to further improve the matching stability of the reinforcing layer 2 and the integral rubber ring 1, in a preferred embodiment, flanges 105 with a certain length are respectively arranged at two ends of the integral rubber ring 1 in an outward turning manner, and the flanges 105 are obtained by respectively extending two ends of the integral rubber ring 1 in a radial outward direction for a certain width and then extending in an axial direction for a certain length in opposite directions. Through the arrangement of the two flanges 105, after the reinforcing layer 2 is correspondingly arranged, the inner peripheral wall surfaces of the two flanges 105 can be tightly attached to the end surface of the reinforcing layer 2 and the outer peripheral wall surface of the end part, so that the two ends of the reinforcing layer 2 are coated, the connection stability between the integral rubber ring 1 and the reinforcing layer 2 can be further ensured, and the axial and radial separation of the integral rubber ring 1 and the reinforcing layer 2 is avoided.

More specifically, reinforcement layer 1 in the preferred embodiment is shown in fig. 1, and includes a caulking ring 201, a bamboo skin layer 202, and a port block 203. The groove filling ring 201 is configured to fill all the connecting grooves 104 except the two connecting grooves 104 at the two ends, and is preferably obtained by correspondingly winding and filling the glass fiber material around and in each connecting groove 104, and when the groove filling ring 201 is configured, the groove filling ring is preferably flush with the outer peripheral wall surface of the integral rubber ring 1 and then stops. Of course, in order to enable the outer peripheral wall surface of the groove filling ring 201 to be in full contact with and bonded to the inner peripheral wall surface of the thin bamboo strip layer 202, in a preferred embodiment, the outer peripheral wall surface of the groove filling ring 201 is configured to be circular arc-shaped, that is, the radial winding thickness of the groove filling ring 201 is sequentially reduced from the middle part to two sides; meanwhile, after the glass fiber material is wound to the opening of the flush connection groove 104, the glass fiber material preferably extends to both axial sides for a certain width, as shown in fig. 1.

Further, in the preferred embodiment, the outer peripheral wall surfaces of both ends of the integral rubber ring 1 are wound and bonded with the port blocking platform 203, which is preferably formed by winding and bonding glass fiber materials, and one side of the port blocking platform 203 is flush with the end surface of the integral rubber ring 1 (no flange 105 is arranged at this time) or abuts against the inner peripheral wall surface of the flange 105, and the other side thereof extends in the axial direction and covers the connecting groove 104 at the end of the integral rubber ring 1. Specifically, when the port blocking platforms 203 at two ends of the integral rubber ring 1 are molded, the connecting grooves 104 at the ends are respectively wound and bonded with the glass fiber materials, and after the glass fiber materials in the connecting grooves 104 are flush with the outer peripheral wall surface of the body, the connecting grooves 104 are wound and bonded with a certain thickness radially outward at two axial sides to form the port platform 203.

When the two ends of the integral rubber ring 1 in the preferred embodiment are respectively provided with the flanges 105, one end of the port blocking platform 203 extends into the annular groove formed by the flanges 105, and the other end of the port blocking platform 203 protrudes out of the end part of the flanges 105 protruding in the axial direction, namely, the distance between the opposite side surfaces of the two port blocking platforms 203 is smaller than the distance between the end parts of the two flanges 105. The stability of the arrangement of the port blocking platform 203 is ensured by arranging the inner side of the port blocking platform 203 corresponding to the matching connecting groove 104.

Further, a bamboo skin layer 202 with a certain thickness is correspondingly wound between the two end port blocking platforms 203, and the thickness of the bamboo skin layer 202 is preferably equal to that of the end port blocking platform 203, that is, the outer peripheral wall surface of the bamboo skin layer 202 is flush with the outer peripheral wall surfaces of the end port blocking platforms 203 on the two sides. Obviously, when the thin bamboo strip layer 202 is wound and bonded, it is closely attached and bonded to the outer peripheral wall surface of each groove-filling ring 201 arranged on the outer peripheral wall surface of the body. Meanwhile, the preferred winding order of "hoop skin + axial skin + hoop skin" that adopts of skin layer 202 in the preferred embodiment, that is to say that the innermost and outermost sides of skin layer 202 adopt hoop skin respectively to carry out the winding bonding to this realizes the reliable overlap joint of inboard and the stable shaping in the outside. Further preferably, the ratio of the annular bamboo skin in the whole bamboo skin layer 202 is greater than 50%, that is, the thickness of the annular bamboo skin layer is greater than the winding thickness of the axial bamboo skin layer.

Further preferably, after finishing the winding and bonding molding of thin bamboo strip layer 202, an outer processing layer 204 with a certain thickness is wound and bonded on the outermost side of thin bamboo strip layer 202, which is preferably formed by winding a glass fiber material, and two ends of outer processing layer 204 are flush with two ends (not provided with "flanges 105") of two port blocking platforms 203 which deviate from each other, or two ends of outer processing layer 204 are respectively abutted against the ends of two flanges 105.

Through the arrangement, the reinforcing layer 2 arranged on the periphery of the integral rubber ring 1 can be obtained, all structural layers or structural members in the reinforcing layer 2 are mutually abutted and tightly bonded to form a stable integral structure, and the reinforcing layer 2 and the integral rubber ring 1 also form a stable integral structure to obtain a tubular beam section structure.

Further, the matching between the bundle section structure and the two pipes 3 is also as shown in fig. 2, that is, the socket end of the first pipe 3a is inserted into one end of the bundle section correspondingly and abuts with the end against one side of the baffle 103, and the socket end of the second pipe 3b is inserted into the other end of the bundle section correspondingly and abuts with the end of the second pipe 3b against the other side of the baffle 103; furthermore, grooves, namely a first sealing groove 301 and a second sealing groove 302, are formed on the peripheries of the two socket ends respectively corresponding to the first protruding spine 101 and the second protruding spine 102 along the circumferential direction. Specifically, when the bundle section structure is matched with two pipes 3, the first protrusions 101 at two ends of the bundle section structure may be embedded into the first sealing groove 301 by the corresponding ends, and the second protrusions 102 respectively disposed at two sides of the baffle 103 may be embedded into the second sealing groove 302 near the corresponding end of the pipe 3 by the corresponding ends. The arrangement of the first spurs 101 and the second spurs 102 can effectively realize the sealing performance after the two pipelines 3 are butted and prevent the leakage after the pipelines are connected, and the arrangement of the reinforcing layer 2 can fully ensure the strength and the stability of the butted position of the pipelines.

Further, the bundle node structure in the preferred embodiment is preferably prepared in the following manner, including the steps of:

(1) and (3) forming the integral rubber ring 1, wherein the integral rubber ring 1 is prepared by adopting an injection molding mode in the preferred embodiment, the integral rubber ring 1 with the spurs, the baffle table 103, the connecting grooves 104 and the turned edges 105 is obtained for standby, and the number of the connecting grooves 104 in the preferred embodiment is more than 2.

(2) Winding and bonding of the caulking ring 201 are performed

The integral rubber ring 1 is correspondingly arranged on a special die, and besides 2 connecting grooves 104 positioned at the two sides of the body, glass fiber materials are wound and bonded in other connecting grooves 104, so that the connecting grooves 104 are filled with the glass fiber materials and are flush with the peripheral wall surface of the body, and a groove filling ring 201 is formed. In a preferred embodiment, the outer peripheral wall surface of the caulking ring 201 slightly protrudes from the outer peripheral wall surface of the body, and extends to both axial sides of the notch by a certain length.

(3) Performing a wrap-around bonding of the port dam 203

Port blocking platforms 203 with certain thickness and certain length are correspondingly wound and bonded on the peripheral wall surfaces at two ends of the body; specifically, when winding and bonding the port block 203, a glass fiber material is wound and bonded in the connecting groove 104 at the end, and after the connecting groove 104 is filled, the glass fiber material is wound and extended outward in the radial direction by a certain thickness on the outer circumferential wall surface of the body, so as to form the port block 203. Obviously, the innermost side of the port block 203 is formed with a convex ring structure inserted into the end connection groove 104, thereby achieving a stable arrangement of the port block 203.

When the end part of the integral rubber ring 1 is not provided with the flanging 105, the two port blocking platforms 203 are wound and formed, and then the end parts are flush with the two side end surfaces of the integral rubber ring 1;

when the end of the integral rubber ring 1 is provided with the flange 105, the two port blocking platforms 203 are wound and formed and then are accommodated in the concave cavity formed by the flange 105 by one end of the two port blocking platforms 203, one side of each port blocking platform 203 is abutted to the inner side wall surface of the flange 105, the setting thickness of each port blocking platform 203 is equal to or slightly smaller than the radial width of the concave cavity along the integral rubber ring 1, and the outer peripheral wall surface of one end of each port blocking platform 203 is abutted to the inner side wall surface of the flange 105, which is just opposite to the outer peripheral wall surface of the integral rubber ring. Meanwhile, the length of the port stopper 203 in the axial direction is greater than the length of the flange 105 in the axial direction, that is, one side wall surface of the port stopper 203 in the axial direction abuts against the inner peripheral wall surface of the flange 105, and the other side wall surface protrudes from the end of the flange 105.

(3) The bamboo skin layer 202 is wound and bonded

After the two end blocking platforms 203 are arranged, the peripheral wall surface of the integral rubber ring 1 between the two end blocking platforms 203 is wound and bonded with a certain thickness by a bamboo skin material to form a bamboo skin layer 202.

When winding bonding thin bamboo strips layer 202, preferably twine according to the mode of "hoop thin bamboo strips layer + axial thin bamboo strips layer + hoop thin bamboo strips layer" and bond to guarantee that the outmost and the inlayer of thin bamboo strips layer 202 are hoop thin bamboo strips layer respectively, and the thickness of hoop thin bamboo strips layer is not less than half of the whole thickness of thin bamboo strips layer 202. Finally, after the bamboo skin layer 202 is wound and bonded, the outer peripheral wall surface thereof is preferably flush with the outer peripheral wall surface of the port blocking table 203.

(4) Performing the winding bonding of the outer treatment layer 204

After the formation of the thin bamboo strip layer 202 is completed, an external treatment layer 204 with a certain thickness can be further wound and bonded on the peripheral wall surface of the thin bamboo strip layer 202, and the external treatment layer can be formed by winding and bonding bamboo fiber materials and glass fiber materials, and can also be formed by winding and bonding materials such as non-woven fabrics and mesh fabrics.

When the two ends of the body are not provided with the flanges 105, the outer processing layer 204 is arranged on the peripheral wall surfaces of the port blocking platform 203 and the bamboo skin layer 202, and the end parts of the outer processing layer are flush with the two end surfaces of the two port blocking platform 203, which deviate from each other.

When both ends of the body are provided with the burring 105, since one end of the port stopper 203 protrudes from the end of the burring 105, the end of the outer treatment layer 204 can be lapped on the outer peripheral plane of the end of the port stopper 203 and abut against the end of the burring 105 with the end, as shown in fig. 1.

(5) And obtaining the reinforcing layer 2 after the port baffle table 203, the bamboo skin layer 202, the groove filling ring 201 and the outer processing layer 204 are cured and molded, and obtaining the beam section structure meeting the requirements after demolding.

The bundle section structure containing the integral rubber ring can be obtained through the preparation of the steps, the preparation method in the process is simple, the obtained bundle section structure is good in integrity, the communication and butt joint of the two pipelines can be accurately realized, and the butt joint sealing performance and accuracy of the bamboo composite pipe are guaranteed; in addition, the integral manufacturing of the rubber ring is utilized, the arrangement of the binding section lining layer can be effectively avoided, the preparation process of the binding section is simplified while the structural strength and rigidity of the binding section structure are guaranteed, the preparation difficulty of the binding section is reduced, the convenience and the reliability of the utilization of the bamboo composite pipe are improved, the application cost of the bamboo composite pipe is reduced, the application and the popularization of the bamboo composite pipe are promoted, and the bamboo composite pipe has a better application prospect and popularization value.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A bundle section structure based on an integral rubber ring is characterized by comprising the integral rubber ring and a reinforcing layer which are sequentially arranged from inside to outside in the radial direction;

2. The integral rubber ring-based beam section structure as claimed in claim 1, wherein at least one middle connecting groove is formed in the peripheral wall surface of the body between the two port blocking platforms;

3. The joint structure based on the integral rubber ring as claimed in claim 2, wherein the outer peripheral wall surface of the groove filling ring protrudes from the outer peripheral wall surface of the body, and the portion of the groove filling ring protruding from the outer peripheral wall surface of the body extends to both sides of the opening of the middle connecting groove with a certain width.

4. The integral rubber ring-based knuckle structure of claim 3, wherein the radial distance between the outer peripheral wall surface of the caulking ring and the outer peripheral wall surface of the body decreases from the middle portion to both sides.

5. The beam section structure based on the integral rubber ring according to any one of claims 1 to 4, wherein the bamboo split layer is formed by sequentially and alternately winding and bonding a circumferential bamboo split and an axial bamboo split in the radial direction.

6. The bundle section structure based on the integral rubber ring according to claim 5, wherein the innermost side and the outermost side of the bamboo skin layer are respectively formed by winding and bonding circumferential bamboo skins, and the total winding thickness of the circumferential bamboo skins is not less than that of the axial bamboo skins.

7. The integral rubber ring-based beam section structure according to any one of claims 1 to 6, wherein flanges are respectively arranged at two ends of the body; the two flanges are obtained by respectively extending two ends of the body outwards along the radial direction for a certain length and then oppositely extending the two ends of the body for a certain length along the axial direction, and the axially extending length of the flanges is smaller than the axial length of the port blocking platform.

8. The integral rubber ring based knuckle structure of any one of claims 1-7, wherein the opening width of the attachment groove is less than the maximum value of the axial width of the attachment groove.

9. The integral rubber ring based knuckle structure of any one of claims 1-8, wherein the axial thickness of each location of the spurs decreases with decreasing diameter.

10. A method for preparing a bundle node structure based on an integral rubber ring, which is used for preparing the bundle node structure based on the integral rubber ring in any one of claims 1 to 9, and comprises the following steps,

when the middle connecting grooves are formed in the peripheral wall surface of the body between the two port blocking tables, glass fiber materials are wound and bonded in the middle connecting grooves before the bamboo skin layers are wound and bonded until the middle connecting grooves are filled with the glass fiber materials;