CN110985792A - Bundle section structure and preparation method thereof - Google Patents

Abstract

The invention discloses a binding structure and a preparation method thereof, belonging to the technical field of connection of bamboo composite pipes, wherein the arrangement of an inner liner in the binding structure can be effectively avoided through the corresponding arrangement of an integral rubber ring, the preparation process of the binding structure is simplified, the risk of leakage is avoided, and the strength, the integrity and the reliability of the binding structure can be ensured while the binding structure is rapidly formed through the corresponding arrangement of a connecting groove on the periphery of the integral rubber ring and the corresponding arrangement of a reinforcing layer, so that the stable butt joint of the bamboo composite pipes is realized. The binding structure provided by the invention is simple in structure and convenient and fast in preparation method, the integrity of the formed binding structure is strong, the reliability is high, the sealing property and the reliability of the binding structure can be effectively improved while the use strength of the binding structure is ensured, the connection reliability of the bamboo composite pipe is ensured, the service life of the bamboo composite pipe connection structure is prolonged, the application cost and the maintenance cost of the bamboo composite pipe are reduced, and the binding structure has good practical value and popularization value.

Description

Bundle section structure 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 section structure 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 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 through the corresponding arrangement of the connecting groove and the corresponding matching of the reinforcing layer and the integral rubber ring, and the reliability and the stability of the connecting structure of the bamboo composite pipe are improved.

In order to achieve the above object, according to one aspect of the present invention, there is provided a knuckle structure, 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 bur is an annular structure arranged along the inner circumference of the body in the circumferential direction, the outermost side of the bur is tightly connected with the inner circumferential wall surface of the body, and the distance between each position on the annular structure and the plane where the inner baffle is located is reduced along with the reduction of the inner diameter of the bur, namely the inner side of the bur points to one side of the inner baffle; the outer circumferential wall surface of the body is provided with a connecting groove along the circumferential direction, and the connecting groove is one or a plurality of connecting grooves arranged at intervals in the axial direction;

the reinforcing layer is wound and bonded on the peripheral wall surface of the body and comprises port blocking platforms which are respectively arranged on the peripheral wall surfaces of two ends of the body, a glass fiber layer arranged between the two port blocking platforms and a bamboo skin layer arranged on the peripheral wall surface of the glass fiber layer; the thickness of the glass fiber layer in the radial direction is smaller than that of the port blocking table, the glass fiber layer is formed by winding and bonding glass fiber materials on the peripheral wall surface of the body, and each connecting groove is filled with the wound and bonded glass fiber materials; the bamboo skin layer is wound and bonded on the peripheral wall surface of the glass fiber layer, and two axial end surfaces of the bamboo skin layer are respectively tightly attached to the side wall surfaces of the corresponding port blocking platforms.

As a further improvement of the invention, the thickness of the thin bamboo strip layer is not less than half of the thickness of the reinforcing layer.

As a further improvement of the invention, the bamboo skin layer is formed by alternately winding and bonding circumferential bamboo skins and axial bamboo skins in the radial direction, and the total winding thickness of the circumferential bamboo skins is greater than that of the axial bamboo skins.

As a further improvement of the invention, the port blocking platform is formed by winding and bonding a single circumferential bamboo strip or a plurality of circumferential bamboo strips.

As a further improvement of the invention, two ends of the body are respectively provided with a flanging; and the two flanges are obtained by respectively extending the 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.

As a further improvement of the invention, the side wall surface of the port baffle table is abutted against the inner peripheral wall surface of the flange, and two ends of the bamboo skin layer respectively extend into the annular groove formed by the flange, and the outer peripheral wall surface of the end part is abutted against the inner peripheral wall surface of the flange.

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 present invention, an outer protective layer is disposed on the outer peripheral wall surface of the reinforcing layer, and the outer protective layer is obtained by applying a protective coating to the outer peripheral wall surfaces of the port block and the thin bamboo strip layer, or by applying a protective material to the outer peripheral wall surface of the reinforcing layer after winding and bonding a bamboo fiber material.

As a further improvement of the invention, a groove with a certain depth is annularly formed on the inner peripheral wall surface of one side of the bur close to the inner baffle table.

In another aspect of the present invention, there is provided a method for preparing a bundle node structure, which comprises the steps of,

(1) forming an integral rubber ring with an internal baffle table, spurs and connecting grooves for later use;

(2) arranging the integral rubber ring on a special die, and respectively winding and bonding port blocking platforms on the peripheral wall surfaces of two ends of the integral rubber ring;

(3) respectively winding and bonding glass fiber materials in each connecting groove, and winding and bonding the glass fiber materials with a certain thickness on the peripheral wall surface of the body between the two port blocking platforms after each connecting groove is filled with the glass fiber materials to form a glass fiber layer;

(4) winding and bonding a plurality of layers of bamboo skin materials on the peripheral wall surface of the glass fiber layer to form a bamboo skin layer with two end surfaces respectively abutted against the side wall surface of the port baffle table;

(5) and after the port blocking table, the thin bamboo strip layer and the glass fiber layer are cured and molded, obtaining an integral reinforcing layer formed by the integral rubber ring, and then demolding to obtain the beam section structure.

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, the corresponding arrangement of the integral rubber rings effectively avoids the arrangement of the inner liner in the binding structure, simplifies the preparation process of the binding structure, avoids the leakage problem caused by the damage of the inner liner in the traditional binding structure, and improves the stability and reliability of the connection structure of the bamboo composite pipe; meanwhile, the stable connection of the reinforcing layer and the integral rubber ring can be effectively realized through the arrangement of the connecting grooves on the peripheral wall surface of the integral rubber ring and the corresponding arrangement of the glass fiber layer, 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 beam section structure is ensured, the strength and the stability of the beam section 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 beam section structure, the two ends of the integral rubber ring are respectively provided with the flanges, the port baffle table in the reinforcing layer is wrapped in the annular groove formed by the flanges, and the two ends of the bamboo skin layer are respectively and correspondingly embedded into the annular groove, so that the reinforcing layer is stably arranged, the integral rubber ring is fully prevented from being separated from the reinforcing layer, the integrity, the sealing property and the strength of the beam section structure are ensured, and the service life of the beam section structure is prolonged;

(3) according to the beam section structure, 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 two parallel sides of the trapezoid, after the connecting groove is correspondingly filled with glass fiber materials, the connecting groove can limit the glass fiber layers in the axial direction and the radial direction, the integral rubber ring is prevented from being separated from the reinforcing layer, and the integrity and the stability of the beam section structure are guaranteed;

(4) the binding structure provided by the invention is simple in structure and convenient and fast in preparation method, the integrity of the formed binding structure is strong, the reliability is high, the sealing property and the reliability of the binding structure can be effectively improved while the use strength of the binding structure is ensured, the stable connection of the bamboo composite pipe is ensured, the service life of the bamboo composite pipe connection structure is prolonged, the application cost and the maintenance cost of the bamboo composite pipe are reduced, and the binding structure has good practical value and popularization value.

Drawings

FIG. 1 is a cross-sectional view of a beam segment structure according to an embodiment of the present 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. the reinforcing layer, 201, the glass fiber layer, 202, the bamboo skin layer, 203, the port blocking table; 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. Specifically, the compression ratio of the rubber ring in the preferred embodiment 1 is 25% to 35%, and the international rubber hardness Index (IRHD) of the rubber ring is 45 to 60.

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 protruding thorns 101 and the second protruding thorns 102 are arranged at intervals in the axial direction, and grooves are formed in the circumferential direction on one side of each protruding thorns close to the baffle 103, so that the inner sides of the protruding thorns can be correspondingly deformed when acted by radial force and correspondingly accommodated in the grooves on the respective sides, and the insertion ports can be correspondingly inserted into the beam sections.

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.

It is further preferred that the connecting groove 104 in the preferred embodiment is configured to have an opening width smaller than the maximum width of the connecting groove 104, and it is further preferred that the width of the opening position of the connecting groove 104 is the minimum width of the connecting groove 104, in order to avoid the separation of the integrated rubber ring 1 and the reinforcing layer 2 caused by the radial force. 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, the reinforcement layer 1 in the preferred embodiment is shown in fig. 1, and includes a fiberglass layer 201, a bamboo skin layer 202, and a port block 203. The glass fiber layer 201 is a base layer, is correspondingly wound and bonded on the peripheral wall surface of the integral rubber ring 1, is correspondingly embedded into and fills up each connecting groove 104, and extends outwards from the peripheral wall surface of the integral rubber ring 1 by a certain thickness, as shown in fig. 1; further, in the preferred embodiment, the length of the glass fiber layer 201 is smaller than that of the integral rubber ring 1, and a certain width is reserved at both ends of the glass fiber layer corresponding to the arrangement of the port blocking table 203.

Further, the thin bamboo strip layer 202 in the preferred embodiment can be used as a structural layer to provide strength for the bundle section structure, and is preferably obtained by winding and bonding a thin bamboo strip material on the peripheral wall surface of the glass fiber layer 201, and two ends of the thin bamboo strip material are flush with two ends of the glass fiber layer 201. Meanwhile, in the preferred embodiment, the thin bamboo strip layer 202 is preferably formed by alternately winding and bonding circumferential thin bamboo strips and axial thin bamboo strips, the total winding thickness of the circumferential thin bamboo strips is greater than that of the axial thin bamboo strips, and the outermost side and the innermost side of the thin bamboo strip layer 202 are preferably formed by winding the circumferential thin bamboo strips respectively. Further, the winding thickness of bamboo skin layer 202 is preferably greater than half of the thickness of reinforcing layer 2, and the thickness of reinforcing layer 2 in the preferred embodiment is the distance from the groove bottom of groove 104 in the radial direction to the outermost side of bamboo skin layer 202.

Further, in a preferred embodiment, the peripheral wall surfaces of the integral rubber ring 1 at the two ends of the thin bamboo strip layer 202 are wound and bonded with port blocking platforms 203, which are preferably formed by winding and bonding a single ring of thin bamboo strips or a plurality of rings of thin bamboo strips, one side of each port blocking platform 203 is abutted against the end surfaces of the glass fiber layer 201 and the thin bamboo strip layer 202 by end surfaces, and the other side of each 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 abutted against the inner peripheral wall surface of the flange 105; meanwhile, the outer peripheral wall surface of the port blocking table 203 is preferably flush with the outer peripheral wall surface of the bamboo skin layer 202, and when the integral rubber ring 1 is provided with the flange 105, the outer peripheral wall surface of the port blocking table 203 abuts against the inner peripheral wall surface of the flange 105. Preferably, the axial length of flange 105 is greater than the axial length of port stop 203, so that flange 105 can completely wrap port stop 203 and the outer periphery of the end of thin bamboo strip layer 202, thereby obtaining the bundle structure shown in fig. 1.

Further preferably, after the port blocking table 203 and the thin bamboo strip layer 202 are molded, an outer protective layer is arranged on the outer peripheral wall surface of the reinforcing layer 2, that is, an outer protective layer is arranged on the outer peripheral wall surface of the port blocking table 203 and the thin bamboo strip layer 202, and the outer protective layer is obtained by coating protective paint on the outer peripheral wall surface of the port blocking table 203 and the thin bamboo strip layer 202, or by winding a bonded bamboo fiber material on the outer peripheral wall surface of the reinforcing layer 2 and then coating a protective material.

With the above arrangement, the obtained coupling structure and the two pipes 3 are also as shown in fig. 2, that is, the socket end of the first pipe 3a is inserted into one end of the coupling correspondingly and abuts against one side of the baffle 103 with the end, the socket end of the second pipe 3b is inserted into the other end of the coupling correspondingly and the end of the second pipe 3b abuts 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) forming the integral rubber ring 1, wherein the integral rubber ring 1 is prepared in an injection molding mode in the preferred embodiment, and the integral rubber ring 1 with the spurs, the baffle table 103, the connecting grooves 104 and the turned-over edges 105 is obtained for standby;

(2) performing a wrap-around bonding of the port dam 203

Correspondingly arranging the integral rubber ring 1 on a special die, and correspondingly winding and bonding port blocking platforms 203 with certain thickness and certain length on the peripheral wall surfaces of two ends of the integral rubber ring; specifically, the port blocking table 203 preferably does not extend to the position of the connecting groove 104, and is formed by winding and bonding a bamboo strip curtain or a single bamboo strip on the periphery of the end of the integral rubber ring 1 in the circumferential direction;

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 leveled with the end parts of the two sides of the integral rubber ring 1 and extend outwards for a certain thickness along the radial direction;

when the end of the integral rubber ring 1 is provided with the flange 105, the two port blocking platforms 203 are wound in the concave cavity formed by the flange 105, 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 corresponding concave cavity along the integral rubber ring 1, the outer peripheral wall surface of each port blocking platform 203 is abutted to the inner side wall surface of the flange 105 just opposite to the outer peripheral wall surface of the integral rubber ring 1, the axial setting length of each port blocking platform 203 is smaller than the axial expenditure length of the flange 105, namely, the axial side wall surface of each port blocking platform 203 is abutted to the inner peripheral wall surface of the flange 105, and the other side wall surface of each port blocking.

(3) Winding and bonding the glass fiber layer 201

After the two port blocking platforms 203 are arranged, the peripheral wall surface of the integral rubber ring 1 between the two port blocking platforms 203 is wound and bonded with a certain thickness by a glass fiber material to form a glass fiber layer 201.

When winding the fine layer 201 of bonding glass, at first twine the fine material of bonding glass in each connecting groove 104 for each connecting groove 104 is filled up by the fine material of glass, treat that the fine material of glass in each connecting groove 104 all fills the parallel and level in the face of 1 outer peripheral wall of integral rubber ring, twine the fine material of the glass of certain thickness of bonding on the whole body periphery wall between the two ports fender platform 203, the fine material of glass is when the winding, drenches the resin simultaneously, realize the bonding of material with it as the binder, form stable fine layer 201 of glass.

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

On the periphery wall of the fine layer 201 of the fine layer after accomplishing the winding bonding, the thin bamboo strips layer 202 of certain thickness of winding bonding, the thickness of thin bamboo strips layer 202 is preferred not to be less than half of the whole thickness of bundle section structure, and the whole thickness of this bundle section structure is preferred the sum of thin bamboo strips layer 202 thickness, fine layer 201 thickness of glass and integral rubber ring 1 body thickness.

Further, thin bamboo strips used for weaving layer 202 in the preferred embodiment is obtained after axial thin bamboo strips used for weaving and hoop thin bamboo strips used for weaving the multilayer respectively, thin bamboo strips used for weaving layer 202 is when winding the shaping, through the continuous joining of binders such as resin, make thin bamboo strips used for weaving layer 202 can with fine layer 201 of glass, the port keeps off platform 203 and forms stable whole, the interior peripheral wall face of thin bamboo strips used for weaving layer 202 closely bonds the peripheral wall face of fine layer 201 of glass, and the both sides wall face of thin bamboo strips used for weaving layer 202 hugs closely the side wall face that bonds both ends port and keep off platform 203, then with fine layer 201 of glass, thin bamboo strips used for weaving layer 202 and port keep off platform 203 and form enhancement layer 2 of beam section structure, provide support and structural strength for integral rubber ring 1.

When the two ends of the integral rubber ring 1 are not provided with the flanges 105, the two ends of the bamboo skin layer 202 in the axial direction are abutted against the end surfaces of the two end port blocking platforms 203, and the peripheral wall surface of the bamboo skin layer 202 is flush with the peripheral wall surface of the two end port blocking platforms 203.

When the two ends of the integral rubber ring 1 are provided with the flanges 105, the two ends of the bamboo skin layer 202 extend into the flanges 105 and abut against the inner peripheral wall surfaces of the flanges 105; preferably, after the outer peripheral wall surfaces of the two ends of the middle of the thin bamboo strip layer 202 abut against the inner peripheral wall surfaces of the flanges 105, the middle of the thin bamboo strip layer 202 continues to be wound and bonded between the ends of the two flanges 105 by a certain thickness, as shown in fig. 1, that is, the end surface of the thin bamboo strip layer 202 is in a shape like a Chinese character 'tu', so that the structural layer 2 and the flanges 105 are stably connected.

(5) After the port blocking table 203, the thin bamboo strip layer 202 and the glass fiber layer 201 are cured and molded, the reinforcing layer 2 is obtained, the periphery of the bundle section structure is processed, the demolding is performed to obtain the bundle section structure meeting the requirement, and the periphery processing can be that protective coating is coated on the peripheral wall surfaces of the port blocking table 203 and the thin bamboo strip layer 202, or protective materials are coated after the bonded bamboo fiber layer is wound.

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 (10)

1. A beam section structure is characterized by comprising an integral rubber ring and a reinforcing layer which are sequentially arranged from inside to outside in the 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 bur is an annular structure arranged along the inner circumference of the body in the circumferential direction, the outermost side of the bur is tightly connected with the inner circumferential wall surface of the body, and the distance between each position on the annular structure and the plane where the inner baffle is located is reduced along with the reduction of the inner diameter of the bur, namely the inner side of the bur points to one side of the inner baffle; the outer circumferential wall surface of the body is provided with a connecting groove along the circumferential direction, and the connecting groove is one or a plurality of connecting grooves arranged at intervals in the axial direction;

the reinforcing layer is wound and bonded on the peripheral wall surface of the body and comprises port blocking platforms which are respectively arranged on the peripheral wall surfaces of two ends of the body, a glass fiber layer arranged between the two port blocking platforms and a bamboo skin layer arranged on the peripheral wall surface of the glass fiber layer; the thickness of the glass fiber layer in the radial direction is smaller than that of the port blocking table, the glass fiber layer is formed by winding and bonding glass fiber materials on the peripheral wall surface of the body, and each connecting groove is filled with the wound and bonded glass fiber materials; the bamboo skin layer is wound and bonded on the peripheral wall surface of the glass fiber layer, and two axial end surfaces of the bamboo skin layer are respectively tightly attached to the side wall surfaces of the corresponding port blocking platforms.

2. The beam section structure of claim 1, wherein the thickness of the thin bamboo strip layer is not less than half of the thickness of the reinforcing layer.

3. The bundle section structure according to claim 1 or 2, wherein the bamboo split layer is formed by alternately winding and bonding circumferential bamboo splits and axial bamboo splits in a radial direction, and a total winding thickness of the circumferential bamboo splits is greater than a total winding thickness of the axial bamboo splits.

4. The bundle section structure according to any one of claims 1 to 3, wherein the port blocking table is formed by winding and bonding a single circumferential bamboo strip or a plurality of circumferential bamboo strips.

5. The beam section structure according to any one of claims 1 to 4, wherein flanges are respectively arranged at two ends of the body; and the two flanges are obtained by respectively extending the 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.

6. The joint structure of claim 5, wherein the port block abuts against the inner peripheral wall surface of the flange with a side wall surface, and both ends of the thin bamboo strip layer extend into the annular groove formed by the flange respectively, and abut against the inner peripheral wall surface of the flange with an outer peripheral wall surface of an end portion.

7. A bundle segment structure according to any one of claims 1 to 6 wherein the width of the opening of the connecting groove is less than the maximum value of the width of the connecting groove in the axial direction.

8. The beam knuckle structure of claim 7, wherein the connecting slot has a trapezoidal cross section and has an opening with a width equal to the length of the shorter side of the two parallel sides of the trapezoid.

9. The bundle section structure according to any one of claims 1 to 8, wherein an outer protective layer is provided on the outer peripheral wall surface of the reinforcing layer, and the outer protective layer is obtained by applying protective paint on the outer peripheral wall surfaces of the port blocking stage and the thin bamboo strip layer, or by applying protective material after winding and bonding a bamboo fiber material on the outer peripheral wall surface of the reinforcing layer.

10. A method for preparing a bundle node structure, which can be used for preparing the bundle node structure of any one of claims 1 to 9, comprising the steps of,

(1) forming an integral rubber ring with an internal baffle table, spurs and connecting grooves for later use;

(2) arranging the integral rubber ring on a special die, and respectively winding and bonding port blocking platforms on the peripheral wall surfaces of two ends of the integral rubber ring;

(3) respectively winding and bonding glass fiber materials in each connecting groove, and winding and bonding the glass fiber materials with a certain thickness on the peripheral wall surface of the body between the two port blocking platforms after each connecting groove is filled with the glass fiber materials to form a glass fiber layer;

(4) winding and bonding a plurality of layers of bamboo skin materials on the peripheral wall surface of the glass fiber layer to form a bamboo skin layer with two end surfaces respectively abutted against the side wall surface of the port baffle table;

(5) and after the port blocking table, the thin bamboo strip layer and the glass fiber layer are cured and molded, obtaining an integral reinforcing layer formed by the integral rubber ring, and then demolding to obtain the beam section structure.

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