CN108561637B - Preparation method of bamboo winding reducer pipe and reducer pipe prepared by using same - Google Patents
Preparation method of bamboo winding reducer pipe and reducer pipe prepared by using same Download PDFInfo
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- CN108561637B CN108561637B CN201810533450.5A CN201810533450A CN108561637B CN 108561637 B CN108561637 B CN 108561637B CN 201810533450 A CN201810533450 A CN 201810533450A CN 108561637 B CN108561637 B CN 108561637B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J1/00—Mechanical working of cane or the like
Abstract
The invention discloses a preparation method of a bamboo winding reducer pipe and a reducer pipe prepared by using the same, and belongs to the technical field of pipeline connection. The preparation method of the bamboo winding reducer pipe and the reducer pipe prepared by using the same are simple in method and simple and convenient in structure, effectively realize the matched connection of the bamboo winding pipe and an external pipe with larger inner diameter, reduce the application of a special joint, greatly reduce the cost of connecting two reducer pipes, reduce the weight of the reducing part due to the arrangement of a filling layer in a unit layer, improve the convenience of the pipe, reduce the construction strength, ensure the tightness and the stability of the connection of the two reducer pipes, and have better application and popularization values.
Description
Technical Field
The invention belongs to the technical field of pipeline connection, and particularly relates to a preparation method of a bamboo winding reducer pipe and a reducer pipe prepared by using the same.
Background
In a plurality of technical fields, the pipeline is widely applied, and the application forms are quite various. Traditional pipelines can be often divided into metal pipelines, plastic pipelines, cement pipelines, glass pipelines and the like due to different materials, and the traditional pipelines respectively have different performance characteristics and also have different advantages and disadvantages: for example, the metal pipeline has higher pressure bearing capacity, high temperature resistance and easy processing, but has larger weight, easy corrosion, difficult construction and general service life; the plastic pipeline is light in weight, corrosion-resistant and convenient to process, but has poor temperature resistance and pressure bearing capacity, small rigidity, easy aging and short service life; the glass pipeline has high strength, corrosion resistance and small friction coefficient, but has limited pressure bearing capacity under the condition of large caliber, glass fiber can be separated out after long-term use, and the glass pipeline is not beneficial to recycling and the like.
In view of this, research has been conducted on new pipes, which are different from the conventional pipes, including bamboo winding pipes, which are generally formed by winding and bonding bamboo fibers as a main reinforcing material, and thus new bio-based pipes are obtained, which are described in the applicant's prior applications CN 105715882A and CN 107696592A, and the bamboo winding pipes are superior to conventional pipes in terms of various main indexes such as compressive strength, rigidity, weight, corrosion resistance and insulation properties, and are renewable resources, and the production process is basically free of three wastes, and have the characteristics of low carbon, environmental protection, energy saving and emission reduction.
In the use process of the bamboo winding pipeline, the pipelines with the same pipe diameter are generally butted with each other, and the pipe diameter of the pipeline is also generally of standard size, so that the connection tightness of the pipeline is higher; however, in the practical application process, the situation that two pipelines with different diameters are butted, namely, the butt joint of the reducing pipelines is often encountered, in the prior art, the butt joint treatment mode of the reducing pipelines is usually realized by adopting special joints, the two ends of each special joint are often provided with interfaces with different diameters, and the interfaces are respectively and correspondingly connected with the pipelines with different diameters, and the butt joint of the reducing pipelines can be realized to a certain extent by the treatment mode.
Disclosure of Invention
According to the preparation method of the bamboo winding reducer pipe and the reducer pipe prepared by using the same, a plurality of unit layers and an external layer positioned at the outermost side are sequentially arranged on the periphery of one end of a circular pipe-shaped pipe body to form a reducing part on the periphery of a matched connecting end, the reducing part is correspondingly matched and connected with an external pipe with the inner diameter larger than the outer diameter of the pipe body, the matched communication of the pipe body and the external pipe with the larger inner diameter is effectively realized, the number of special joints and the number of connecting points in the pipe connecting process are reduced, so that the connecting cost of two reducing pipes is reduced, the construction procedure is simplified, the sealing performance and the safety of pipe connection are improved, and a filling layer made of light materials is arranged in each unit layer, so that the weight of the reducing part is further reduced, and the application convenience of the bamboo winding reducer pipe is improved.
In order to achieve the above object, according to one aspect of the present invention, there is provided a method for manufacturing a bamboo winding reducer pipe, for manufacturing a bamboo winding reducer pipe directly mateable with an external pipe, comprising the steps of:
s1: winding and bonding a thin bamboo strip layer with a certain thickness on the periphery of a cylindrical die along the circumferential direction to form a pipeline body of the bamboo winding reducer pipe;
s2: the method comprises the steps that a bamboo strip layer with a certain thickness, namely a first sealing layer, is wound and bonded on the outer peripheral surface of the end part of a matched connecting end of a pipeline body, which is correspondingly connected with an external pipeline, the bamboo strip layer with the same thickness, namely a first winding layer, is wound and bonded on the outer periphery of the pipeline body, which is far away from the end surface of the matched connecting end, a first filling layer is arranged between the first sealing layer and the first winding layer, and then a first unit layer consisting of the first sealing layer, the first filling layer and the first winding layer is formed on the outer peripheral surface of the matched connecting end;
s3: the other unit layer, namely a second unit layer, is wound and bonded on the outer peripheral surface of the first unit layer along the circumferential direction, the second unit layer comprises a second sealing layer, a second filling layer and a second winding layer which are sequentially arranged on the outer peripheral wall surface of the first unit layer along the axial direction, the second sealing layer is close to the end surface of the matched connecting end, and the second winding layer is away from the end surface of the matched connecting end;
s4: a bamboo strip layer with a certain thickness is wound and bonded on the outer peripheral surface of the second unit layer along the circumferential direction to form an external connection layer, and then a reducing part which is formed by sequentially and tightly bonding the first unit layer, the second unit layer and the external connection layer and has a radius of gyration slightly larger than the inner diameter of the external pipeline is formed on the outer periphery of the matched connection end;
s5: the pipe body and the reducing part are solidified and formed, and the outer peripheral surface of the external layer, which is close to one side of the end surface of the matched connecting end, is cut and polished in the circumferential direction to a certain thickness to form a lapping table with an annular step structure, and the minimum value of the gyration radius of the lapping table just corresponds to the inner diameter of the outer pipe, so that one end of the reducing part with smaller gyration radius can be coaxially sleeved into one end of the outer pipe, and the pipe body is coaxially matched and connected with the outer pipe with the inner diameter larger than the outer diameter of the pipe body;
s6: and demolding the bamboo winding reducer pipe from the mold to finish the preparation of the bamboo winding reducer pipe.
As a further development of the invention, at least one cell layer consisting of a sealing layer, a filling layer and a winding layer is arranged between the first cell layer and the second cell layer in a circumferential winding bond.
As a further improvement of the invention, at least one annular sealing groove is formed on the peripheral surface of the end with the smaller radius of gyration of the lapping table along the circumferential direction, and a sealing ring which can be sleeved and embedded in the sealing groove is arranged corresponding to the sealing groove.
In another aspect of the invention, a bamboo winding reducer pipe is provided, which comprises a pipe body formed by winding and bonding bamboo skin layers with certain thickness and having a circular pipe structure, and is characterized in that,
one end of the pipeline body is a matched connection end, the periphery of the pipeline body is provided with a reducing part, and the pipeline body can be coaxially matched and connected with an external pipeline with the inner diameter larger than the outer diameter of the pipeline body through the reducing part; and is also provided with
The reducing part comprises a first unit layer, a second unit layer and an external layer, wherein the first unit layer is tightly attached to the outer peripheral surface of the matched connecting end, the second unit layer is tightly attached to the outer periphery of the first unit layer, the external layer is arranged on the outer periphery of the second unit layer, the thickness of each unit layer is uniform, the first unit layer and the second unit layer respectively comprise a sealing layer, a filling layer and a winding layer which are sequentially arranged along the axial direction of the pipeline body, the sealing layer is arranged on one side close to the end surface of the matched connecting end along the circumferential direction, and the winding layer is arranged on one side deviating from the end surface of the matched connecting end along the circumferential direction; and
the radius of gyration of external layer near one side of mating connection terminal end is less than the radius of gyration of opposite side to form the annular step structure that has annular step face on the periphery of external layer, just less radius of gyration on external layer corresponds with the internal diameter of outside pipeline just, then the less one end of reducing portion radius of gyration can coaxial sleeve is inlayed in the one end of outside pipeline, and with the annular step face on the reducing portion periphery butt this outside pipeline's terminal surface, thereby accomplish the coaxial mating connection of pipeline body with outside pipeline.
As a further improvement of the invention, at least one unit layer having the sealing layer, the filling layer and the winding layer is provided between the first unit layer and the second unit layer in a wound-around bonding in a circumferential direction.
As a further improvement of the present invention, two filling layers in two adjacent unit layers are staggered, that is, two ends of the filling layer on the outer side are respectively arranged on the outer peripheral surfaces of the sealing layer and the filling layer on the inner side, or two ends of the filling layer on the outer side are respectively arranged on the outer peripheries of the filling layer and the winding layer on the inner side.
As a further improvement of the invention, one side end face of each unit layer and/or each external connection layer is respectively flush with the end face of the matching connection end.
As a further improvement of the invention, at least one annular sealing groove is formed on the peripheral surface of the end with the smaller turning radius of the external layer along the circumferential direction, and a sealing ring which can be sleeved and embedded in the sealing groove is arranged corresponding to the sealing groove.
As a further improvement of the invention, one side end face of each unit layer in the reducing portion facing away from the end face of the matching connection end is flush or not flush.
As a further improvement of the invention, the end face of one side of each unit layer, which is away from the end face of the matched connection end, is not flush, the length of each unit layer along the axial direction is sequentially reduced from inside to outside, and the length of the external connection layer is smaller than that of the second unit layer, so that the reducing part forms a multi-layer step structure on one side of the reducing part, which is away from the end face of the matched connection end.
In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:
(1) According to the preparation method of the bamboo winding reducer pipe and the reducer pipe prepared by using the same, the plurality of unit layers and the external layer positioned at the outermost side are sequentially arranged on the periphery of one end of the circular pipe-shaped pipe body to form the reducing part on the periphery of the matched connecting end, and the reducing part is correspondingly matched and connected with an external pipe with the inner diameter larger than the outer diameter of the pipe body, so that the matched communication of the pipe body and the external pipe with the larger inner diameter is effectively realized, the number of special joints and the number of connecting points in the pipe connecting process are reduced, the connecting cost of the two reducing pipes is reduced, the construction procedure is simplified, and the sealing property and the safety of the pipe connection are improved;
(2) According to the preparation method of the bamboo winding reducer pipe and the reducer pipe prepared by using the same, the weight of the reducing part is reduced by arranging the filling layer with a certain length in each unit layer, the use convenience of the bamboo winding reducer pipe is improved, and the annular step structure is arranged on the external layer at the outermost side of the reducing part, namely, one end which is correspondingly connected with an external pipeline is smaller in turning radius, so that after the reducing part is coaxially connected with the external pipeline, the annular step surface on the external layer can be abutted against the end surface of the external pipeline, the effective limit of the connection of the two pipelines is realized, the sealing property of the connection is further improved, and the leakage hidden danger is reduced;
(3) According to the preparation method of the bamboo winding reducer pipe and the reducer pipe prepared by using the same, at least one annular sealing groove is formed in the peripheral surface of the outer connecting layer with smaller radius of gyration, and the sealing ring is arranged corresponding to the sealing groove, so that the sealing ring can be correspondingly matched and embedded into the sealing groove, the sealing performance of connection of two pipelines is further improved by a plurality of sealing rings, and the safety of pipeline application is ensured;
(4) The preparation method of the bamboo winding reducer pipe and the reducer pipe prepared by using the same are simple, simple and convenient to operate, strong in controllability and adjustability, capable of effectively realizing the matched connection of the bamboo winding pipe and an external pipe with larger inner diameter, and reducing the application of a special joint, thereby greatly reducing the cost of connecting two reducing pipes, simplifying the construction process, reducing the construction strength, ensuring the tightness and stability of the connection of the two reducing pipes, and having better application and popularization values.
Drawings
FIG. 1 is a schematic flow chart of steps of a method for manufacturing a bamboo-wound reducer pipe according to an embodiment of the invention;
FIG. 2 is a schematic view of a pipe structure manufactured by the manufacturing method of the bamboo-wound reducer pipe according to the embodiment of the present invention;
like reference numerals denote like technical features throughout the drawings, in particular: 1. reducing part, 101, winding layer, 1011, first winding layer, 1012, second winding layer, 1013, third winding layer; 102. sealing layer 1021, first sealing layer 1022, second sealing layer 1023, third sealing layer; 103. a filling layer 1031, a first filling layer 1032, a second filling layer 1033, a third filling layer; 104. and 105, sealing grooves and 2, pipeline bodies.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The bamboo-wound reducer pipe of the present invention is shown in a preferred embodiment, in which a pipe structure is shown in fig. 2, wherein the bamboo-wound reducer pipe includes a reducing portion 1 and a pipe body 2.
Further, as shown in fig. 2, the pipe body 2 of the bamboo winding reducer pipe in the preferred embodiment is a through pipe structure with a certain size and an inner diameter, and is formed by winding and bonding bamboo materials, the pipe body 2 in the preferred embodiment may be a circular pipe structure formed by winding a single layer of bamboo strip material, or may be a circular pipe structure formed by winding multiple layers of bamboo strip material and bonding, and the thickness of the winding layer with the bamboo strip material as a main body may be optimized according to practical situations, which is not described herein; further preferably, the pipe body 2 in the preferred embodiment may be formed by winding and bonding multiple layers of materials, such as a base layer with bamboo skin material as a main body, a filling layer with straw and stalk as main materials at the periphery of the base layer, an outer protective layer or an outer protective layer at the periphery of the filling layer, and the like, and is formed by bonding multiple layers of materials firmly, so that the multi-layer pipe body structure is not the focus of the study of this patent, and therefore will not be described herein.
In addition, according to the application scene of the pipeline body 2, the inner layer and the outer layer of the pipeline body can be correspondingly provided with corresponding structural layers, for example, when the pipeline body is used as a pipe gallery or a pipeline, the inner circumferential surface of the pipeline body 2 can be preferably provided with an inner liner layer and/or the outer circumferential surface of the pipeline body 2 is provided with an outer protective layer, the arrangement of the functional layers can be realized in the preparation process of the pipeline body 2, namely, firstly, a liner layer formed by winding and bonding pocket gauze, fiber felt or non-woven fabric with a certain thickness is wound and bonded along the circumferential direction, then, a thin bamboo strip layer with a certain thickness is wound and bonded on the basis of the inner liner layer to form the main body structure of the pipeline body 2, and then, a non-woven fabric or pocket gauze with a certain thickness can be wound and bonded on the outer circumference of the main body structure to serve as an adhesive layer, and waterproof paint, fireproof paint and anticorrosive paint with a certain thickness are painted on the outer surface of the adhesive layer to form the outer protective layer of the outer circumference of the main body structure.
Further, one end of the pipe body 2 in the preferred embodiment needs to be connected with a pipe with a larger inner diameter in a matching way, and the end on the side is called as a matching connection end of the pipe body 2; further, in order to realize direct connection of two reducing pipelines, in the preferred embodiment, the reducing part 1 is arranged on the matching connection end of the pipeline body 2, and the reducing part 1 in the preferred embodiment is formed by tightly winding and bonding multiple layers of materials through coaxial matching connection between the reducing part 1 and an external pipeline with a larger inner diameter.
Further, the reducing portion 1 in the preferred embodiment of the present invention is, as shown in fig. 2, provided on the outer periphery of the mating connection end of the pipe body 2; further, the reducing part 1 in the preferred embodiment includes a winding layer 101, a filling layer 103 and a sealing layer 102, which are formed by winding and bonding multiple layers of materials, specifically, a first sealing layer 1021 is wound and arranged on the periphery of the matching connection end close to the end face, a first winding layer 1011 is wound and bonded on the periphery of the pipe body 2 on the side of the first sealing layer 1021 facing away from the end face of the matching connection end, the thicknesses of the first winding layer 1011 and the first sealing layer 1021 are the same, and a certain distance is provided between two opposite ends, namely, a certain length of annular gap is formed on the periphery of the matching connection end, and then a certain amount of filling material is wound and arranged in the annular gap to form a first filling layer 1031 between the first winding layer 1011 and the first sealing layer 1021, and the thicknesses of the first winding layer 1011, the first sealing layer 1021 and the first filling layer 1 in the preferred embodiment are the same, namely, the peripheral wall surfaces of the layers are connected with each other and form a revolution annular surface with the same revolution radius; further preferably, the thicknesses of the first winding layer 1011, the first sealing layer 1021 and the first filling layer 1031 in the preferred embodiment are not particularly limited, which may be preferred according to practical situations, and the lengths of the first winding layer 1011, the first sealing layer 1021 and the first filling layer 1031 along the axis of the pipe body 2 are not particularly limited, which may be preferred according to practical situations, and the lengths of the three layers of materials may be the same or different, respectively, such as the lengths of the first winding layer 1011, the first sealing layer 1021 and the first filling layer 1031 are 10 to 30mm, respectively, and the thicknesses of the respective layers are preferably 5 to 10mm, respectively, in the preferred embodiment.
Further, the first winding layer 1011, the first sealing layer 1021 and the first filling layer 1031 form a first unit layer of the reducing section 1, and then a second unit layer is wound and bonded on the outer circumference of the first unit layer, the second unit layer includes a second winding layer 1012, a second sealing layer 1022 and a second filling layer 1032, the second filling layer 1032 in the preferred embodiment is disposed at the junction of the first sealing layer 1021 and the first filling layer 1031, that is, one end of the second filling layer 1032 is disposed on the outer circumference of the first sealing layer 1021, the other end is disposed on the outer circumference of the first filling layer 1031, and accordingly, the second winding layer 1012 is disposed at the junction of the first winding layer 1011 and the first filling layer 1031, that is, one end of the second winding layer 1012 is disposed on the outer circumference of the first filling layer 1031, the other end is disposed on the outer circumference of the first winding layer 1011, and the second sealing layer 1022 is wound on the outer circumference of the first sealing layer 1021; further, the thicknesses of all layers in the second unit layer are respectively the same, namely the peripheral wall surfaces of the three layers in the second unit layer are positioned on the annular wall surface with the same radius of gyration; further preferably, the thickness of the first unit layer is the same as the thickness of the second unit layer, and of course, the thicknesses of the two unit layers may be the same or different, which may be preferable according to practical situations. Of course, the lengths of the first and second wound layers 1011 and 1012, the second and first filler layers 1031 and 1022 and the first sealing layer 1021 may be the same or different, which may be preferable according to practical circumstances.
Further, an external connection layer 104 with a certain thickness is disposed on the outer periphery of the second unit layer, the thickness and the length of which can be optimized according to actual needs, and further preferably, the second filling layer 1032 in the second unit layer covers the external connection layer 104, that is, two ends of the external connection layer 104 are respectively disposed on the outer periphery of the second sealing layer 1022 and the second winding layer 1012; further, a certain thickness is cut and polished in the circumferential direction on the peripheral wall surface of the end part of the external connection layer 104 close to the end surface of the matched connection end, so that a lap joint table with an annular step structure is formed, the minimum value of the radius of gyration of the polished external connection layer 104 just corresponds to the inner diameter of the external pipeline, and then the annular step surface on the lap joint table along the radial direction of the pipeline body 2 can be abutted against the end surface of the connection end of the external pipeline after the external connection layer 104 is correspondingly matched and connected with the external pipeline, so that the limiting effect is achieved; further preferably, at least one sealing groove 105 is formed on the outer peripheral wall surface of the outer connection layer 104 after polishing a certain thickness along the circumferential direction, and when the number of the sealing grooves 105 is plural, the sealing grooves 105 are arranged at intervals along the axial direction on the outer periphery of the outer connection layer 104, as shown in fig. 2, correspondingly, sealing rings can be correspondingly arranged to be respectively sleeved in the sealing grooves 105, so that the connection tightness between the reducing part 1 and an external pipeline is assisted to be improved.
Through the arrangement, the reducing part 1 formed by combining the two unit layers and one external layer 104 can be obtained on the periphery of the matched connection end of the pipeline body 2, and the coaxial matched connection with an external pipeline is completed by the lap joint table on the reducing part 1. Further preferably, a third unit layer is further disposed between the second unit layer and the first unit layer, and includes a third sealing layer 1023, a third filling layer 1033 and a third winding layer 1013, and of course, at least one unit layer composed of a winding layer 101, a sealing layer 102 and a filling layer 103 may be further preferably disposed between the third unit layer and the second unit layer, and between the third unit layer and the first unit layer, respectively, and the filling layer 103 in each unit layer is correspondingly disposed on the outer periphery of one end of the unit layer close to the winding layer 101, and the end of the filling layer 103 below the unit layer is sealed by the winding layer 101 to prevent the damage of the filling layer 103; further preferably, a unit layer composed of the sealing layer 102 and the winding layer 101 is also preferably provided between the exterior connection layer 104 and the second unit layer, as shown in fig. 2, to sufficiently secure rigidity of the reducing portion 1 in the radial direction, to prevent the risk of insufficient rigidity of the reducing portion 1 due to the provision of the filling layer 103, to sufficiently secure rigidity of the reducing portion 1 while reducing the weight of the reducing portion 1, and to reduce occurrence of deformation.
Further preferably, in the preferred embodiment, the ends of the sealing layers 102 facing away from the winding layer 101 are respectively flush, that is, the ends of the sealing layers 102 on the side close to the end face of the mating connection end are flush, and the flush ends of the sealing layers 102 may be further respectively flush with the ends of the external connection layer 104 and the end face of the mating connection end, as shown in fig. 2; of course, the end of each sealing layer 102 facing away from the wrapping layer 101, the end of the circumscribing layer 104 and the end of the mating connection end may also be partially flush, which may be preferable in view of the circumstances.
Still preferably, in the preferred embodiment of the present invention, each winding layer 101 and each sealing layer 102 are preferably bamboo skin layers, which are woven, wound and bonded to form a bamboo winding reducer structure, and the thickness and length of each winding layer may be preferably selected according to actual situations, which is not described herein; the filler layers 103 are preferably made of a lightweight material such as straw, stalk, or foam, so that the weight of the reduced diameter portion 1 can be reduced.
Further, the preparation of the bamboo winding reducer pipe according to the preferred embodiment of the present invention is preferably performed by means of a cylindrical mold, the flow chart of which is shown in fig. 1, and specifically, the preparation method of the bamboo winding reducer pipe is preferably as follows:
s1: preparing a die: preparing a cylindrical mold, ensuring the cleaning of the peripheral wall surface of the mold, and winding at least one layer of demolding film on the peripheral wall surface of the mold for demolding the bamboo winding reducer pipe;
s2: preparation of the pipe body 2: winding and bonding a thin bamboo strip layer with a certain thickness on the periphery of a demoulding film of a mould to form a pipeline body of the bamboo winding reducer pipe; of course, according to different application scenarios of the pipeline body 2, for example, as a pipe gallery, a pipeline, etc., it may be preferable to provide an inner liner layer on the inner peripheral surface of the pipeline body 2 and/or provide an outer protective layer on the outer peripheral surface of the pipeline body 2, where the above-mentioned functional layer may be provided in the preparation process of the pipeline body 2, for example, on the basis of step S1, an inner liner layer is first wound, then on the basis of the inner liner layer, a bamboo skin layer is wound and bonded to form a main body structure of the pipeline body 2, and an outer protective layer with a certain thickness is wound and bonded on the outer periphery of the main body structure, which is not an important point of the study of the present invention, so that the description is omitted here.
S3: determining the size and the position of the reducing part 1 according to the inner diameter of the external pipeline, and then determining the number of layers of the winding layer and the thickness of the external layer;
s4: preparation of the reducing portion 1: a first sealing layer 1021 is wound and bonded on the peripheral wall surface of one end of the pipeline body 2 for connecting an external pipeline along the circumferential direction, a first winding layer 1011 is wound and bonded on the peripheral wall surface of the pipeline body 2 at one side, which is far away from the matched connecting end, of the first sealing layer 1021, a certain distance is reserved between the first winding layer 1011 and the first sealing layer 1021, a first filling layer 1031 is wound and bonded between the first winding layer 1011 and the first sealing layer 1021, the thicknesses of the first winding layer 1011, the first sealing layer 1021 and the first filling layer 1031 are the same, and a first unit layer on the peripheral surface of the matched connecting end is formed;
s5: at least one unit layer formed by combining a winding layer 101, a sealing layer 102 and a filling layer 103 is sequentially wound and bonded on the peripheral wall surface of the first unit layer, an external connection layer 104 is wound and arranged on the peripheral surface of the unit layer farthest from the peripheral surface of the matched connection end, namely, the external connection layer 104 is wound and bonded on the peripheral wall surface of the second unit layer, so that the radius of gyration of the external connection layer 104 is matched with the inner diameter of an external pipeline, and a reducing part 1 on the peripheral surface of the matched connection end is formed;
s6: the pipe body 2 and the reducing part 1 are dried, solidified and formed, and then a certain thickness is cut and polished on the peripheral wall surface of the external connection layer 104, which is close to one side of the end part of the pipe body 2, along the circumferential direction, so that a lap joint table with an annular step structure is formed, and the minimum value of the turning radius of the lap joint table corresponds to the inner diameter of an external pipe, so that the pipe body 2 can be coaxially connected with the external pipe through the reducing part 1, and the peripheral wall surface of the polished end part of the external connection layer 104 can be tightly attached to the inner peripheral wall surface of the connecting end of the external pipe;
s7: in the preferred embodiment, at least one annular sealing groove 105 is formed in the peripheral wall surface of the end part of the external connection layer 104, which is in matched connection with the external pipeline, a plurality of sealing grooves 105 are axially arranged on the peripheral wall surface of the external connection layer 104 at intervals, sealing rings can be correspondingly arranged in each sealing groove 105, and finally, the formed bamboo winding reducer pipe is taken down from the die, so that the preparation of the bamboo winding reducer pipe is completed.
According to the bamboo winding reducer pipe, one end of the circular pipe-shaped pipe body 2 is provided with the reducing part 1 formed by winding and bonding a plurality of annular unit layers, the outermost side of the reducing part 1, namely the outer peripheral wall surface of the second unit layer, is wound and bonded on the outer connecting layer 104 arranged on the outer periphery of the outer connecting layer 104 close to the end part of the pipe body 2, a certain thickness is cut and polished in the circumferential direction, a lap joint table with an annular step structure is formed, the minimum value of the turning radius of the outer connecting layer 104 after cutting and polishing is matched with the inner diameter of an external pipe, and therefore coaxial matching connection between the pipe body 2 and the external pipe can be realized through the outer connecting layer 104 on the reducing part 1, the sealing performance of pipe matching can be further improved through the arrangement of the lap joint table structure, and the filling layer 103 is arranged in each unit layer, so that the quality of the reducing part 1 is further reduced, and the convenience of pipe application is improved.
The bamboo winding reducer pipe is simple in preparation method and convenient to process, and the reducer part is arranged on the matched connection end of the pipe body and is matched and connected with an external pipe, so that the matched connection of two reducer pipes can be effectively realized without a special connector, the cost of the reducer pipe connection is greatly reduced, the number of connection points in the reducer pipe connection process is effectively reduced, the construction procedure is simplified, the construction strength is reduced, the tightness and stability of the reducer pipe connection are effectively ensured, and the bamboo winding reducer pipe has good application and popularization values.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (8)
1. A preparation method of a bamboo winding reducer pipe is used for preparing the bamboo winding reducer pipe which can be directly matched and connected with an external pipeline, and comprises the following steps:
s1: winding and bonding a thin bamboo strip layer with a certain thickness on the periphery of a cylindrical die along the circumferential direction to form a pipeline body (2) of the bamboo winding reducer pipe;
s2: a bamboo strip layer with a certain thickness, namely a first sealing layer (1021), is wound and bonded on the peripheral surface of the end part of the matched connecting end of the pipeline body (2) which is correspondingly connected with the external pipeline in a circumferential direction, a bamboo strip layer with the same thickness, namely a first winding layer (1011), is wound and bonded on the periphery of the pipeline body (2) on the side, which is far away from the end surface of the matched connecting end, of the first sealing layer (1021), a first filling layer (1031) is arranged between the first sealing layer (1021) and the first winding layer (1011), and then a first unit layer consisting of the first sealing layer (1021), the first filling layer (1031) and the first winding layer (1011) is formed on the peripheral surface of the matched connecting end;
s3: the other unit layer, namely a second unit layer, is wound and bonded on the outer peripheral surface of the first unit layer along the circumferential direction, the second unit layer comprises a second sealing layer (1022), a second filling layer (1032) and a second winding layer (1012) which are sequentially arranged on the outer peripheral wall surface of the first unit layer along the axial direction, the second sealing layer (1022) is close to the end surface of the matched connection end, and the second winding layer (1012) is away from the end surface of the matched connection end;
s4: a bamboo strip layer with a certain thickness is wound and bonded on the outer peripheral surface of the second unit layer along the circumferential direction to form an external connection layer (104), and then a reducing part (1) which is formed by sequentially and tightly bonding the first unit layer, the second unit layer and the external connection layer (104) and has a radius of gyration slightly larger than the inner diameter of the external pipeline is formed on the outer periphery of the matched connection end;
s5: the pipe body (2) and the reducing part (1) are solidified and molded, a certain thickness is cut and polished along the circumferential direction on the outer peripheral surface of the external connection layer (104) close to one side of the end face of the matched connection end, a lapping table with an annular step structure is formed, the minimum value of the turning radius of the lapping table just corresponds to the inner diameter of the outer pipe, so that one end of the reducing part (1) with smaller turning radius can be coaxially sleeved into one end of the outer pipe, and the pipe body (2) is coaxially matched and connected with the outer pipe with the inner diameter larger than the outer diameter of the pipe body (2);
s6: and demolding the bamboo winding reducer pipe from the mold to finish the preparation of the bamboo winding reducer pipe.
2. The method of manufacturing a bamboo wound reducer pipe according to claim 1, wherein at least one unit layer consisting of a sealing layer (102), a filling layer (103) and a winding layer (101) is provided between the first unit layer and the second unit layer in circumferential winding bonding.
3. The method for manufacturing a bamboo winding reducer pipe according to claim 1 or 2, wherein at least one annular sealing groove (105) is formed on the outer peripheral surface of the end with the smaller radius of gyration of the lapping table in the circumferential direction, and a sealing ring capable of being sleeved and embedded in the sealing groove is arranged corresponding to the sealing groove (105).
4. The bamboo winding reducer pipe comprises a pipe body (2) which is formed by winding and bonding bamboo skin layers with certain thickness and has a circular pipe structure, and is characterized in that,
one end of the pipeline body (2) is a matched connection end, the periphery of the pipeline body is provided with a reducing part (1), and the pipeline body (2) can be coaxially matched and connected with an external pipeline with the inner diameter larger than the outer diameter of the pipeline body (2) through the reducing part (1); and is also provided with
The reducing part (1) comprises a first unit layer, a second unit layer and an external connection layer (104), wherein the first unit layer is tightly attached to the outer peripheral surface of the matched connecting end, the second unit layer is tightly attached to the outer periphery of the first unit layer, the external connection layer (104) is arranged on the outer periphery of the second unit layer, the thickness of each unit layer is uniform, one side end surface of each unit layer and/or the external connection layer (104) is respectively flush with the end surface of the matched connecting end, and one side end surface of each unit layer in the reducing part (1) deviating from the end surface of the matched connecting end is flush or not flush; the first unit layer and the second unit layer respectively comprise a sealing layer (102), a filling layer (103) and a winding layer (101) which are sequentially arranged along the axial direction of the pipeline body (2), the sealing layer (102) is arranged on one side close to the end face of the matched connecting end along the circumferential direction, and the winding layer (101) is arranged on one side away from the end face of the matched connecting end along the circumferential direction; and
the radius of gyration of external layer (104) is close to one side of mating connection terminal face is less than the radius of gyration of opposite side, in order to form the annular step structure that has annular step face on the periphery of external layer (104), just less radius of gyration on external layer (104) corresponds with the internal diameter of outside pipeline, then the less one end of reducing portion (1) radius of gyration can coaxial sleeve is inlayed in the one end of outside pipeline to with the terminal surface of this outside pipeline of annular step face butt on this reducing portion (1) periphery, thereby accomplish pipeline body (2) with the coaxial mating connection of outside pipeline.
5. The bamboo wound reducer pipe of claim 4, wherein at least one unit layer having the sealing layer (102), the filling layer (103) and the winding layer (101) is provided between the first unit layer and the second unit layer in a circumferential winding bonding.
6. The bamboo winding reducer pipe according to claim 4, wherein two of the filling layers (103) in adjacent two unit layers are staggered, that is, two ends of the filling layer (103) on the outer side are respectively provided on the outer peripheral surfaces of the sealing layer (102) and the filling layer (103) on the inner side, or two ends of the filling layer (103) on the outer side are respectively provided on the outer peripheries of the filling layer (103) and the winding layer (101) on the inner side.
7. The bamboo winding reducer pipe according to any one of claims 4 to 6, wherein at least one annular sealing groove (105) is formed in the circumferential direction on the outer peripheral surface of the end of the outer joint layer (104) with the smaller radius of gyration, and a sealing ring capable of being sleeved and embedded in the sealing groove is arranged corresponding to the sealing groove (105).
8. The bamboo winding reducer pipe according to claim 4, wherein an end face of one side of each unit layer facing away from the end face of the matching connection end is not flush, the length of each unit layer in the axial direction is sequentially reduced from inside to outside, and the length of the external connection layer (104) is smaller than that of the second unit layer, so that the reducing portion (1) forms a multi-layer step structure on the side facing away from the end face of the matching connection end.
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| JPS5993585A (en) * | 1982-11-18 | 1984-05-30 | 松下電器産業株式会社 | Different-diameter pipe |
| CN103234087B (en) * | 2013-03-29 | 2016-12-07 | 王浩 | A kind of pipeline connects stealthy reducing and mends core and using method thereof |
| CN204459553U (en) * | 2015-02-07 | 2015-07-08 | 浙江天雁控股有限公司 | The variable-diameter ring of water pipe that suitability is strong |
| CN205315879U (en) * | 2015-12-24 | 2016-06-15 | 浙江鑫宙竹基复合材料科技有限公司 | A pipe fitting that is used for bamboo winding complex to manage |
| CN105546230B (en) * | 2016-02-02 | 2018-05-15 | 浙江鑫宙竹基复合材料科技有限公司 | A kind of stalk bamboo coiled composite tube and preparation method thereof |
| CN105715882B (en) * | 2016-04-15 | 2019-12-03 | 浙江鑫宙竹基复合材料科技有限公司 | A kind of small-bore bamboo coiled composite tube and its manufacturing method |
| CN108018874A (en) * | 2016-10-31 | 2018-05-11 | 浙江鑫宙竹基复合材料科技有限公司 | For the sliceable pipe fitting of the compound pipe gallery of bamboo and the piping lane including the pipe fitting |
| CN206487959U (en) * | 2017-01-10 | 2017-09-12 | 王小催 | A kind of attachment means for reducing bamboo multiple tube |
| CN107300045A (en) * | 2017-08-30 | 2017-10-27 | 西南石油大学 | A kind of composite strengthening Winding pressure pipe |
| CN208281655U (en) * | 2018-05-29 | 2018-12-25 | 浙江鑫宙竹基复合材料科技有限公司 | Bamboo winds reducer pipe |
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Effective date of registration: 20230111 Address after: 311122 No. 29-16, Jiaqi Road, Xianlin Street, Yuhang District, Hangzhou, Zhejiang Applicant after: Zhonglin Xinzhou Bamboo Winding Development Co.,Ltd. Address before: 311115 No.6 Xiuyan Road, Fengdu village, Pingyao Town, Yuhang District, Hangzhou City, Zhejiang Province Applicant before: ZHEJIANG XINZHOU BAMBOO-BASED COMPOSITES TECHNOLOGY Co.,Ltd. Applicant before: Ye Ling |
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