A rubber-plastic composite air duct system and on-site installation method thereof

Abstract

The present application discloses a rubber-plastic composite air duct system and an on-site installation method thereof, and relates to the field of air duct technology. The method comprises: determining the specifications and quantity of the required first sheet air duct body and sheet pieces, the type and quantity of the hanging points and the hanging mechanism according to the engineering information; positioning the rubber-plastic composite air duct system to be constructed at the construction site; installing the hanging points at intervals according to the positioning, and cutting the sheet pieces to obtain a plurality of second sheet air duct bodies; punching holes at the corresponding hanging points of each sheet air duct body, and installing the hanging mechanism; using air duct connectors to close each sheet air duct body into a ring shape, and after each hanging mechanism is connected to the corresponding hanging point, using air duct connectors to connect adjacent ring-shaped air duct bodies to each other, and completing the installation of the rubber-plastic composite air duct system; at the same time, the air duct connector can be cut off at any position and maintain its function. The present application realizes one-time delivery and one-time on-site hoisting construction of the rubber-plastic composite air duct system.

Description

Technical Field

[0001] The present application relates to the technical field of air ducts, and in particular to a rubber-plastic composite air duct system and an on-site installation method thereof. Background Art

[0002] At present, fiber fabric duct systems are used in air-conditioning systems. Compared with metal duct systems, they have the advantages of simple structure, easy cleaning and low production cost.

[0003] In the related technology, before installing the fiber fabric duct system on site, it is necessary to carry out the duct layout according to customer needs and the construction site, design the duct diameter and length, and make a budget and quotation after counting the duct usage, and then enter the site for the second time to carry out the suspension construction (hanging steel ropes or sliding rods). After the suspension construction is completed, the duct size is specifically measured and an order is placed with the manufacturer for production. Since the duct size measurement is done at high altitude, the measurement is difficult and time-consuming, and the measurement accuracy is subject to the measurement method, tools, and the quality and carefulness of the measurement personnel. Therefore, the duct size measurement is not only difficult, time-consuming, and costly, but also has low measurement accuracy.

[0004] After the duct production is completed and shipped to the site, the construction team will carry out the duct installation process. The duct installation and the building interior decoration are mostly in the same construction stage. After the duct size measurement is completed, other types of decoration work may occupy the duct design position, and the duct size and structure need to be adjusted. At the same time, the accuracy of the early size measurement is not high. Therefore, the construction team needs to repeatedly place orders to the production factory based on new changes and adjustments, which runs the risk of scrapping the duct and causing a lot of waste. In addition, the construction period is extended, further increasing the construction cost.

[0005] In addition, the above process also places high demands on the production capacity and timeliness of manufacturers. Production factories cannot produce and stock in advance, and can only produce and ship quickly according to order requirements, which greatly increases the cost of production and transportation. Summary of the invention

[0006] In view of the defects existing in the prior art, the purpose of this application is to provide a rubber-plastic composite air duct system and an on-site installation method thereof, which can realize the on-site rapid processing and installation of the rubber-plastic composite air duct system to reduce installation costs and speed up installation efficiency.

[0007] The first aspect of the present application provides an on-site installation method of a rubber-plastic composite air duct system, which comprises the following steps:

[0008] Determine the specifications and quantity of the first sheet-like air duct body and sheet-like members, the types and quantities of the suspension points and suspension mechanisms required according to the engineering information;

[0009] Position the rubber-plastic composite air duct system to be constructed at the construction site;

[0010] According to the above positioning, the suspension points are installed at intervals, and the sheet-like members are cut to obtain a plurality of second sheet-like air duct bodies;

[0011] Punch holes in each sheet-like air duct body at the locations corresponding to the above-mentioned suspension points, and install the suspension mechanism;

[0012] Use the duct connector to close each sheet duct body into a ring shape, and after each suspension mechanism is connected to the corresponding suspension point, use the duct connector to connect the adjacent ring duct bodies to complete the installation of the rubber-plastic composite duct system; at the same time,

[0013] The air duct connector can be cut off at any position and maintain its functionality.

[0014] Based on the first aspect, in a possible embodiment, the first sheet-like air duct body is pre-installed with air duct connectors in the length direction, and when the air duct connectors in the length direction of the first sheet-like air duct body are connected, the first sheet-like air duct body is annular to form a first annular air duct body;

[0015] The first sheet-shaped air duct body is pre-installed with a sub-connector and a female connector of an air duct connector in the width direction thereof, for connecting with an adjacent annular air duct body.

[0016] Based on the first aspect, in a possible embodiment, it further includes:

[0017] According to the above positioning, the length of the third sheet-like air duct body which is different from the length of the other first sheet-like air duct body is determined;

[0018] According to the above length, part of the first sheet-like air duct body is cut along its width direction, and the cut air duct connector part is installed on the cut edge to obtain a third sheet-like air duct body.

[0019] Based on the first aspect, in a possible embodiment, the sheet-like member is not pre-installed with a duct connector, and after the sheet-like member is cut to obtain a plurality of second sheet-like duct bodies, the method further includes:

[0020] A duct connector is installed in the length direction of the second sheet-like duct body, and a sub-connector of the duct connector is installed in the width direction where the second sheet-like duct body is connected to the end of an adjacent annular duct body, and a mother connector of the duct connector is installed at the end of the adjacent annular duct body.

[0021] Based on the first aspect, in a possible embodiment, installing the air duct connector specifically includes:

[0022] The sub-connector and the female connector of the air duct connector are respectively fixed to the two sides in the length direction of the second sheet-shaped air duct body, and are both fixedly connected to the outermost or innermost non-insulating layer at the side;

[0023] The sub-connector of the duct connector is fixed to the side connected to the adjacent duct body end in the width direction of the sheet duct body, and is fixedly connected to the outermost or innermost non-insulating layer at the side, and the adjacent duct body end is fixed with the mother connector of the duct connector.

[0024] Based on the first aspect, in a possible embodiment, it further includes:

[0025] The heat-insulating sealing strip is fixed to the outer surface of the connection of the annular air duct body in the length direction and the outer surface of the connection of the adjacent annular air duct bodies.

[0026] Based on the first aspect, in a possible embodiment, when the annular air duct body is a reducer or a turning elbow, it is determined whether there is a corresponding special-shaped template, and the special-shaped template is: a first flat plate of the same size as the reducer or the turning elbow when it is in sheet form;

[0027] If yes, use the above-mentioned special-shaped template to cut the sheet piece;

[0028] Otherwise, according to the size data of the above-mentioned reducer or steering elbow, its curved surface is flattened through unfolding software, the shape and size of the above-mentioned reducer or steering elbow when it is in sheet form are determined, and linear marks are made on the sheet piece through a measuring tool, and cutting is performed according to the above-mentioned linear marks.

[0029] Based on the first aspect, in a possible embodiment, when the reducer is unfolded, the unfolding software is used to calculate the unfolding according to the input length of the reducer, the inner and outer diameter information of both ends, and the eccentric distance, to obtain the unfolding plane data;

[0030] When the steering bend is unfolded, the unfolding software calculates the unfolding according to the input length, curvature radius, and inner and outer diameter information of the steering bend, and obtains the unfolding plane data.

[0031] Based on the first aspect, in a possible embodiment, when a hole needs to be opened in the middle of the annular air duct body and connected with other annular air duct bodies to form a three-way or four-way structure, it is determined whether there is a corresponding hole opening template, and the hole opening template is: a second plate having the same size as the annular air duct body to be opened when it is in sheet form and having a hole opened, and the hole on the second plate is configured to form a through hole connected to other annular air duct bodies after the annular air duct body is opened;

[0032] If yes, the sheet-shaped air duct body forming the annular air duct body is cut and opened using the hole-opening template;

[0033] Otherwise, based on the size data of the above-mentioned annular air duct body and other connected annular air duct bodies, and the connection position between the two, the curved surface of the above-mentioned annular air duct body is flattened through the unfolding software, the opening position when the above-mentioned annular air duct body is in sheet form is determined, and linear marks are made on the sheet-like air duct body through a measuring tool, and cutting is performed according to the above-mentioned linear marks.

[0034] Based on the first aspect, in a possible embodiment, it further includes:

[0035] Two annular air duct bodies of a three-way structure are connected by a three-way connector; the two annular air duct bodies are respectively a first connecting pipe and a second connecting pipe, and a through hole for connecting to the second connecting pipe is opened in the middle of the first connecting pipe;

[0036] The three-way connector comprises a straight pipe section and a flange edge integrally formed at the end of the straight pipe section; the size of the flange edge is larger than the size of the through hole.

[0037] Based on the first aspect, in a possible embodiment, when the first connecting tube is unfolded, the unfolding software is used to calculate the unfolding data of the unfolding plane according to the input length of the first connecting tube, the inner and outer diameter information of the first connecting tube and the second connecting tube, the angle and eccentric distance between the two, and the distance from the center of the end face of the second connecting tube away from the first connecting tube to the end of the first connecting tube in the axial direction of the first connecting tube.

[0038] Based on the first aspect, in a possible embodiment, the use of a three-way connector to connect the first connecting pipe and the second connecting pipe specifically includes:

[0039] Passing the flange through the through hole and placing it in the first connecting pipe, bonding the end surface of the flange close to the through hole to the inner surface of the first connecting pipe at the through hole;

[0040] The outer surface of the first connecting pipe at the through hole is bonded and sealed to the straight pipe section by using a thermal insulation sealing tape;

[0041] The straight pipe section is inserted into the second connecting pipe, and the outer wall of the straight pipe section and the inner wall of the second connecting pipe are bonded and sealed.

[0042] Based on the first aspect, in a possible embodiment, it further includes:

[0043] According to the size data of the two annular air duct bodies forming the three-way structure, the flexible flange strip with an L-shaped cross section is cut to obtain a three-way connector body with an L-shaped cross section;

[0044] The three-way connector body is bent into a ring shape, and the butt joints are joined to form the flange edge and the straight pipe section.

[0045] Based on the first aspect, in a possible embodiment, the suspension mechanism includes a suspension assembly and a suspension steel rope;

[0046] The above-mentioned installation and suspension mechanism specifically includes:

[0047] According to the positioning of the rubber-plastic composite air duct system to be constructed, the cross-sectional shape and the width of the annular air duct body are determined, and then the installation position of the above-mentioned hanging assembly is determined;

[0048] According to the installation position of the suspension assembly, determine the perforation position of the duct body and perform perforation;

[0049] A connecting rope is installed at the perforated position, and glue is applied to seal each perforated position; the end of the connecting rope located inside the air duct body is provided with a first connecting portion, and the end of the connecting rope located outside the air duct body is provided with a second connecting portion;

[0050] The suspension assembly is connected to the first connection part, and one end of the suspension steel rope is fixed to the second connection part.

[0051] Based on the first aspect, in a possible embodiment, when the cross-sectional shape of the annular air duct body is circular, the suspension assembly includes at least two suspension slide bars, and the installation positions of the suspension slide bars are determined;

[0052] When the cross-sectional shape of the annular air duct body is non-circular, the suspension assembly includes two suspension slide bars and a plurality of inner support slide bars. The length of the inner support slide bars and the installation position of the suspension slide bars are determined according to the width of the air duct of the cross-sectional shape, and the two ends of the plurality of inner support slide bars are respectively connected to the two suspension slide bars.

[0053] Based on the first aspect, in a possible embodiment, it further includes:

[0054] Each first sheet air duct body and sheet element are respectively packaged into rolls and then transported to the construction site; the curling direction of the first sheet air duct body is consistent with the direction in which it is curled into a ring, and the curling direction of the sheet element is consistent with the ring-forming direction of the second sheet air duct body.

[0055] A second aspect of the present application provides a rubber-plastic composite air duct system, comprising:

[0056] A main air duct, one end of which is provided with an air inlet, and the main air duct comprises a plurality of annular air duct bodies;

[0057] Each annular air duct body is provided with an air duct connector in the length direction and in the circumferential direction of the end where two annular air duct bodies are connected; the air duct connector can be cut off at any position and maintain its function;

[0058] The positions of the air duct connectors are configured so that adjacent annular air duct bodies are connected to each other to form a main air duct after all the air duct connectors are used.

[0059] Based on the second aspect, in a possible embodiment, the annular duct body having a size different from other standard annular duct bodies is configured to be cut according to the size required at the construction site.

[0060] Based on the second aspect, in a possible embodiment, it further includes:

[0061] A heat-insulating sealing strip fixed to the outer surface of the connection of the annular air duct body in the length direction and the outer surface of the connection of adjacent annular air duct bodies;

[0062] There is an angle between the plane where the connection point in the length direction of the annular air duct body is located and the axial cross-section of the annular air duct body.

[0063] Based on the second aspect, in a possible embodiment, it further includes:

[0064] A branch air duct extending laterally from the main air duct, the branch air duct comprising at least one annular air duct body, and connected to the main air duct via a three-way connector;

[0065] The annular air duct body connected with the main air duct and the branch air duct is the first connecting tube, and the annular air duct body connected with the branch air duct and the first connecting tube is the second connecting tube. A through hole connected with the second connecting tube is opened in the middle of the first connecting tube.

[0066] Based on the second aspect, in a possible embodiment, the three-way connector includes:

[0067] a straight pipe section, which is inserted into the second connecting pipe and is bonded to the second connecting pipe;

[0068] A flange edge is integrally formed at the end of the straight pipe section, the flange edge passes through the through hole and is placed in the first connecting pipe, and is bonded and fixed to the inner surface of the first connecting pipe at the through hole;

[0069] The straight pipe section and the flange edge are formed by bending a flexible flange strip with an L-shaped cross section, and a joint is formed at the butt joint.

[0070] Based on the second aspect, in a possible embodiment, a suspension mechanism is further included, and the suspension mechanism includes:

[0071] A suspension assembly is disposed in the annular air duct body and is used to support the annular air duct body to form a desired cross-sectional shape and air duct width;

[0072] A connecting rope is passed through the annular duct body, the end of the connecting rope located inside the annular duct body is provided with a first connecting portion connected to the hanging assembly, and the end of the connecting rope located outside the annular duct body is provided with a second connecting portion; the perforation of the annular duct body through which the connecting rope is passed is coated with sealant;

[0073] A suspension steel rope has one end fixed to the second connecting portion and the other end connected to a suspension point.

[0074] Based on the second aspect, in a possible embodiment, the suspension assembly includes:

[0075] A suspension slide bar, of which two are provided;

[0076] There are multiple inner supporting slide bars, and both ends of the multiple inner supporting slide bars are respectively fixed on the two suspension slide bars;

[0077] The length of the inner support slide bar and the installation position of the suspension slide bar are configured such that after the suspension mechanism is installed in the annular air duct body, the annular air duct body is formed into a desired cross-sectional shape and air duct width.

[0078] Based on the second aspect, in a possible embodiment, the annular air duct body includes a use state and a transport state;

[0079] When the annular air duct body is in use, the air duct connectors in the length direction are connected;

[0080] When the annular air duct body is in a transport state, the air duct connectors in the length direction are not connected and the air duct body is rolled up, and the curling direction during the roll packaging is consistent with the ring-forming direction during the use state.

[0081] Compared with the prior art, the advantages of this application are:

[0082] The rubber-plastic composite air duct system and its on-site installation method of the present application determine the specifications and quantity of the required first sheet-like air duct body and sheet-like parts, the types and quantities of suspension points and suspension mechanisms according to the engineering information, and locate the rubber-plastic composite air duct system to be constructed at the construction site, so as to cut the sheet-like parts to obtain a plurality of second sheet-like air duct bodies, and then use air duct connectors to close each sheet-like air duct body into a ring shape, and connect adjacent ring-like air duct bodies to each other. Since the first sheet-like air duct body is a prefabricated part, the sheet-like parts can be cut to obtain the second sheet-like air duct body, and the air duct connector can be cut at any position. Therefore, the on-site size processing requirements are met, not only one-time delivery is achieved, but also one-time on-site lifting construction of the rubber-plastic composite air duct system is achieved, the construction is simple, and the installation cost is greatly reduced, and the installation efficiency is accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] Figure 1A flow chart of an on-site installation method of a rubber-plastic composite air duct system provided in an embodiment of the present application;

[0084] Figure 2 A schematic diagram of cutting a third sheet-shaped air duct body provided in an embodiment of the present application;

[0085] Figure 3 A schematic diagram of the structure of a three-way connector provided in an embodiment of the present application;

[0086] Figure 4 A schematic diagram of a three-way structure provided in an embodiment of the present application;

[0087] Figure 5 A schematic diagram of a first installation of a suspension mechanism provided in an embodiment of the present application;

[0088] Figure 6 A schematic diagram of the connection of the connecting rope provided in the embodiment of the present application;

[0089] Figure 7 A second installation schematic diagram of the suspension mechanism provided in the embodiment of the present application;

[0090] Figure 8 A schematic diagram of a rubber-plastic composite air duct system provided in an embodiment of the present application;

[0091] Fig. 9 A schematic diagram of the installation of the thermal insulation sealing strip provided in the embodiment of the present application;

[0092] Fig.10 This is a third installation schematic diagram of the suspension mechanism provided in an embodiment of the present application.

[0093] Reference numerals:

[0094] 1-first annular air duct body, 10-third annular air duct body;

[0095] 2- the second annular air duct body;

[0096] 3- duct connector, 31- sub-connector, 32- female connector;

[0097] 4- Insulation sealing strip;

[0098] 5- tee connector, 51- flange edge, 52- straight pipe section;

[0099] 6-suspension mechanism, 61-suspension slide bar, 62-inner support slide bar, 63-suspension steel rope, 64-vertical support slide bar, 65-connecting short rod, 66-connecting rope, 67-first connecting part, 68-second connecting part;

[0100] 7- Main air duct;

[0101] 8-Branch air duct;

[0102] 9- three-way structure, 91- first connecting pipe, 92- second connecting pipe. DETAILED DESCRIPTION

[0103] The present application is further described in detail below with reference to the accompanying drawings and embodiments.

[0104] See also Figure 1 As shown, the embodiment of the present application provides an on-site installation method of a rubber-plastic composite air duct system, which includes the steps of:

[0105] S1. Determine the required specifications and quantity of the first sheet-like air duct body, the specifications and quantity of the sheet-like members, the types and quantities of the suspension points and the suspension mechanisms 6 according to the engineering information.

[0106] Among them, according to the construction drawings and other engineering information of the construction site, the direction of the air duct can be laid out in advance, and then the specifications and quantity of the required first sheet-like air duct body and sheet-like parts, the type and quantity of hanging points and suspension mechanisms 6 are determined according to the direction of the air duct, and the first sheet-like air duct body, sheet-like parts, hanging points and suspension mechanisms 6 are sent to the construction site in a unified manner to achieve one-time delivery.

[0107] S2. According to the spatial relationship between the pre-arranged air duct direction and other components on the construction site, the rubber-plastic composite air duct system to be constructed is positioned at the construction site. If there are other components at the pre-arranged location, the air duct can be rerouted.

[0108] Among them, positioning the rubber-plastic composite air duct system to be constructed includes: accurately measuring the construction site, and calculating the size of each annular air duct body in the rubber-plastic composite air duct system based on the above accurate measurement. Therefore, during the on-site installation process, only one on-site measurement is required.

[0109] S3. According to the above positioning, use the hanging point tool to install the hanging points at intervals on the construction site, and cut the sheet-like members to obtain a plurality of second sheet-like air duct bodies.

[0110] S4. Punch holes at the positions corresponding to the above-mentioned suspension points on each sheet-like air duct body and install the suspension mechanism 6. That is, the suspension mechanism 6 needs to be installed on both the first sheet-like air duct body and the second sheet-like air duct body.

[0111] S5. Use the duct connector 3 to close each sheet-like duct body into a ring shape, and after each suspension mechanism 6 is connected to the corresponding suspension point, use the duct connector 3 to connect adjacent ring-shaped duct bodies to complete the installation of the rubber-plastic composite duct system. At the same time, the duct connector 3 can be cut off at any position and maintain its function.

[0112] The on-site installation method of the rubber-plastic composite air duct system of the present application uses air duct connectors to close each sheet-like air duct body into a ring shape at the construction site, and connects adjacent ring-shaped air duct bodies to each other. Since the first sheet-like air duct body is a prefabricated part, the sheet-like part can be cut to obtain the second sheet-like air duct body, and the air duct connector can be cut at any position. Therefore, the on-site size processing requirements are met, not only one-time delivery is achieved, but also one-time on-site lifting construction of the rubber-plastic composite air duct system is achieved. The construction is simple, and the installation cost is greatly reduced, and the installation efficiency is accelerated.

[0113] In this embodiment, the first sheet-like air duct body is pre-installed with air duct connectors 3 in the length direction. When the air duct connectors 3 in the length direction of the first sheet-like air duct body are connected, the first sheet-like air duct body is annular, forming a first annular air duct body 1. The first annular air duct body 1 is a straight tube with equal diameter or equal cross-section.

[0114] The air duct connector 3 includes a sub-connector 31 and a female connector 32 that can be connected to each other, and the sub-connector 31 and the female connector 32 are respectively installed on two sides of the length direction of the first sheet-like air duct body. The length of the first sheet-like air duct body in the width direction is the circumference of the first annular air duct body 1.

[0115] The first sheet-like air duct body is pre-installed with a sub-connector 31 and a female connector 32 of the air duct connector 3 in the width direction, respectively, for connecting with adjacent annular air duct bodies after the first sheet-like air duct body forms the first annular air duct body 1 .

[0116] Before entering the construction site, the air duct connector 3 is pre-installed on the first sheet-like air duct body, which can reduce the installation time of the air duct connector 3 on site and speed up the installation efficiency.

[0117] When the length of the annular air duct body required at the installation location is shorter than the length of the first annular air duct body 1 , the first annular air duct body 1 needs to be shortened.

[0118] See also Figure 2 As shown, further, according to the above positioning, the length of the third sheet-like air duct body which is different from the length of the other first sheet-like air duct bodies is determined.

[0119] Then, according to the above length, part of the first sheet-like air duct body is cut along its width direction, and the cut air duct connector part is installed on the cut edge to obtain a third sheet-like air duct body whose length is shorter than other first sheet-like air duct bodies.

[0120] When the air duct connectors 3 in the length direction of the third sheet-shaped air duct body are connected, the third sheet-shaped air duct body is annular, forming a third annular air duct body 10 .

[0121] In this embodiment, when the first sheet-like air duct body is cut along its width direction, the cut sub-connector 31 or female connector 32 can be directly installed to the above-mentioned cut edge to facilitate connection with the female connector 32 or sub-connector 31 at the end of the adjacent annular air duct body.

[0122] In this embodiment, the sheet-like member is not pre-installed with the air duct connector 3. After the sheet-like member is cut to obtain a plurality of second sheet-like air duct bodies, the method further includes:

[0123] First, the duct connector 3 is installed in the length direction of the second sheet-like duct body. When the duct connector 3 in the length direction of the second sheet-like duct body is connected, the second sheet-like duct body is annular, and a second annular duct body 2 is obtained.

[0124] Then, the sub-connector 31 of the duct connector 3 is installed in the width direction of the second sheet duct body connected to the end of the adjacent annular duct body, and the female connector 32 of the duct connector 3 is installed at the end of the adjacent annular duct body.

[0125] In this embodiment, the second annular air duct body 2 and the adjacent annular air duct body can be connected through the sub-connector 31 and the female connector 32 of the air duct connector 3. The second annular air duct body 2 is a reducer or a turning elbow. The adjacent annular air duct bodies can be straight pipes with equal diameter or cross-section, or can be reducers or turning elbows.

[0126] Optionally, the air duct connector 3 is a Velcro set, a plastic clip chain or a flexible flange strip, and the connection function of the air duct connector 3 is not affected after being cut at will.

[0127] In this embodiment, the duct connector 3 can be fixed to the surface of the duct body by bonding, ultrasonic welding or surface sewing technology, and the above fixing process will not penetrate the insulation layer of the duct body, and will not cause air leakage and cold bridge problems.

[0128] When the duct connector 3 is sewn on the surface of the sheet-like duct body, the duct connector 3 is sewn and connected to the outermost or innermost non-insulating layer of the sheet-like duct body to ensure that the stitches will not penetrate the insulating layer of the duct body.

[0129] Specifically, installing the air duct connector 3 specifically includes:

[0130] First, the sub-connector 31 and the female connector 32 of the duct connector 3 are respectively fixed to the two sides of the second sheet-shaped duct body in the length direction, and are both fixedly connected to the outermost or innermost non-insulating layer at the side. That is, the sub-connector 31 and the female connector 32 of the duct connector 3 are both fixed to the outermost layer at the side, or are both fixed to the innermost layer at the side, so that the two can be butt-connected.

[0131] Then, the sub-connector 31 of the air duct connector 3 is fixed to the side connected to the adjacent air duct body end in the width direction of the sheet-like air duct body, and is fixedly connected to the outermost or innermost non-insulating layer at the side, and the adjacent air duct body end is fixed with the female connector 32 of the air duct connector 3. When the female connector 32 is fixed to the outermost side of the adjacent air duct body end, the sub-connector 31 is fixed to the outermost side of the sheet-like air duct body side; when the female connector 32 is fixed to the innermost side of the adjacent air duct body end, the sub-connector 31 is fixed to the innermost side of the sheet-like air duct body side.

[0132] Preferably, the above method further comprises:

[0133] The thermal insulation sealing strip 4 is fixed to the outer surface of the connection of the annular air duct body in the length direction and the outer surface of the connection of adjacent annular air duct bodies, so as to facilitate insulation and sealing treatment through the thermal insulation sealing strip 4, thereby further reducing the energy loss caused by air leakage.

[0134] In this embodiment, the thermal insulation sealing strip 4 is fixed to the outer surface of the annular air duct body by bonding.

[0135] Furthermore, when the annular air duct body is a reducer or a turning elbow, it is determined whether there is a corresponding special-shaped template, and the special-shaped template is: a first flat plate of the same size as the reducer or the turning elbow when it is in sheet form.

[0136] If there is a corresponding special-shaped template, the sheet-like parts can be cut directly using the special-shaped template to reduce processing time.

[0137] Otherwise, it indicates that the reducer or steering elbow is of unconventional size, and it is necessary to flatten the curved surface through unfolding software according to the size data of the reducer or steering elbow, determine the shape and size of the reducer or steering elbow when it is in sheet form, make linear marks on the sheet part through measuring tools, and cut according to the linear marks.

[0138] In this embodiment, when the reducer is unfolded, the unfolding software calculates the unfolding according to the input length of the reducer, the inner and outer diameter information of both ends and the eccentric distance, and obtains the unfolding plane of the reducer, that is, the shape and size data of the sheet-like piece.

[0139] When unfolding the steering elbow, the unfolding software calculates the unfolding according to the input length, curvature radius, and inner and outer diameter information of the steering elbow at both ends, and obtains the unfolding plane of the steering elbow, that is, the shape and size data of the sheet.

[0140] Furthermore, when a hole needs to be opened in the middle of the annular air duct body and connected with other annular air duct bodies to form a three-way or four-way structure, it is determined whether there is a corresponding hole opening template. The above-mentioned hole opening template is: a second flat plate which is the same size as the annular air duct body to be opened when it is in sheet form and is provided with a hole. The hole on the above-mentioned second flat plate is configured so that after the annular air duct body is opened, a through hole connected to other annular air duct bodies is formed.

[0141] If there is a corresponding hole-punching template, the hole-punching template is used to cut and punch holes in the sheet-like air duct body that forms the annular air duct body.

[0142] Otherwise, it indicates that the three-way or four-way structure is of unconventional size, and it is necessary to flatten the curved surface of the annular duct body through the unfolding software according to the size data of the annular duct body and other connected annular duct bodies, and the connection position of the two, determine the position of the opening when the annular duct body is in sheet form, and make linear marks on the corresponding sheet-like duct body through measuring tools, and cut according to the linear marks.

[0143] In this embodiment, the two annular air duct bodies forming the three-way structure 9 are respectively a first connecting tube 91 and a second connecting tube 92 . A through hole connected to the second connecting tube 92 is opened in the middle of the first connecting tube 91 .

[0144] When the first connecting tube 91 is unfolded, the unfolding software is used to calculate and unfold the data of the unfolding plane of the first connecting tube 91 based on the input length of the first connecting tube 91, the inner and outer diameter information of the first connecting tube 91 and the second connecting tube 92, the angle and eccentric distance between the two, and the distance from the center of the end face of the second connecting tube 92 away from the first connecting tube 91 to the end of the first connecting tube 91 in the axial direction of the first connecting tube 91.

[0145] This embodiment satisfies the requirements for on-site rapid processing of the special-shaped air duct body and the size and structure changes at the construction site.

[0146] See also Figure 3 and Figure 4 As shown, the method of this embodiment also includes:

[0147] The first connecting pipe 91 and the second connecting pipe 92 are connected by a three-way connector 5 to form a three-way structure 9. The three-way connector 5 includes a straight pipe section 52 and a flange 51 integrally formed at the end of the straight pipe section 52, and the size of the flange 51 is larger than the size of the through hole.

[0148] The method of connecting the first connecting pipe 91 and the second connecting pipe 92 using the three-way connector 5 specifically includes:

[0149] First, the flange 51 is passed through the through hole and placed in the first connecting tube 91 , and the end surface of the flange 51 close to the through hole is bonded to the inner surface of the first connecting tube 91 at the through hole.

[0150] Then, the outer surface of the first connecting pipe 91 at the through hole and the straight pipe section 52 are bonded and sealed by using a heat-insulating sealing tape.

[0151] Finally, one end of the straight pipe section 52 away from the flange edge 51 is connected to the second connecting pipe 92 .

[0152] Optionally, when the straight pipe section 52 is inserted into the second connecting pipe 92, the outer wall of the straight pipe section 52 is bonded and sealed to the inner wall of the second connecting pipe 92; when the straight pipe section 52 is sleeved on the outer wall of the second connecting pipe 92, the inner wall of the straight pipe section 52 is bonded and sealed to the outer wall of the second connecting pipe 92.

[0153] In this embodiment, the three-way connector body is a flexible flange strip, which can be cut according to the size of the three-way structure 9 at the construction site and bent and connected into a ring shape, thereby meeting the construction site's requirements for the size change of the three-way connector 5.

[0154] Specifically, when manufacturing the tee connector 5 at the construction site according to the dimension data of the tee structure 9, i.e. the perimeter of the through hole of the first connecting pipe 91, the flexible flange strip with an L-shaped cross section is firstly cut to obtain a tee connector body with an L-shaped cross section.

[0155] Then, the three-way connector body is bent into a ring shape, and the butt joints are joined to form a flange edge 51 and a straight pipe section 52 .

[0156] In addition, the three-way connector 5 of a specific size can also be prefabricated in a factory according to a given size to reduce on-site processing time and be directly used at the construction site. The prefabricated three-way connector 5 can be made of metal, plastic or rubber-plastic material.

[0157] In this embodiment, the three-way connector 5 not only realizes the rapid connection of the three-way structure 9, but also has a simple connection process.

[0158] Accordingly, when making a four-way structure, it is necessary to make two three-way connectors 5 according to the size data of the three annular air duct bodies forming the four-way structure. The three annular air duct bodies are respectively the third connecting pipe, the fourth connecting pipe and the fifth connecting pipe. Two through holes are opened in the middle of the third connecting pipe, and the fourth connecting pipe and the fifth connecting pipe are respectively connected through the two through holes. The flange edges 51 of the two three-way connectors 5 each pass through a through hole and are placed in the third connecting pipe, and the straight pipe sections 52 of the two three-way connectors 5 are respectively connected to the fourth connecting pipe and the fifth connecting pipe.

[0159] Furthermore, the suspension mechanism 6 includes a suspension assembly, a connecting rope 66 and a suspension steel rope 63 .

[0160] See also Figure 5 and Figure 6 As shown, the above-mentioned installation and suspension mechanism 6 specifically includes:

[0161] First, according to the positioning of the rubber-plastic composite air duct system to be constructed, the cross-sectional shape of the annular air duct body and the air duct width are determined, and then the air duct height and the installation position of the hanging assembly are determined.

[0162] Secondly, according to the installation position of the suspension component, the perforation position of the annular air duct body when it is in sheet form is determined and the perforation is performed.

[0163] Then, the connecting rope 66 is installed at each of the perforated positions, and the perforated positions are sealed with glue to further enhance the heat preservation effect. The end of the connecting rope 66 located inside the annular air duct body is provided with a first connecting portion 67, and the end of the connecting rope 66 located outside the annular air duct body is provided with a second connecting portion 68.

[0164] Optionally, the first connection portion 67 is a perforated belt, and the second connection portion 68 is a hanging ring. Therefore, in this embodiment, at least two rows of perforated belts and hanging rings are arranged along the length direction of the annular air duct body.

[0165] Finally, the suspension assembly is connected to the first connection portion 67, and one end of the suspension steel rope 63 is fixed to the second connection portion 68. After the other end of the suspension steel rope 63 is connected to the suspension point, the annular air duct body can be hoisted.

[0166] In this embodiment, when the cross-sectional shape of the annular air duct body is circular, the suspension assembly includes at least two suspension slide bars 61, and the installation position of the suspension slide bars 61 can be determined according to the cross-sectional shape. The suspension slide bars 61 are arranged along the length direction of the annular air duct body, and each suspension slide bar 61 is respectively inserted into a row of perforated belts.

[0167] See also Figure 7 As shown, when the cross-sectional shape of the annular air duct body is non-circular, the suspension assembly includes two suspension slide bars 61 and a plurality of inner support slide bars 62. The length of the inner support slide bars 62 and the installation position of the suspension slide bars 61 are determined according to the cross-sectional shape and the width of the air duct, wherein the two ends of the plurality of inner support slide bars 62 are respectively connected to the two suspension slide bars 61 to form the suspension assembly.

[0168] The suspension mechanism 6 of this embodiment is independent of the air duct body and has adjustable size. During on-site installation, the length of the inner support slide bar 62 can be changed by cutting to change the width of the annular air duct body, thereby achieving height adjustment of the annular air duct body to meet the needs of changes in on-site space size. The change in the length of the inner support slide bar 62 combined with the change in the installation position of the suspension slide bar 61 can also achieve a semicircular, arched or semi-elliptical cross-section of the annular air duct body to meet the market's personalized needs for the appearance of the air duct. In addition, through the above-mentioned installation method, the exposure of the suspension component is avoided, the service life of the suspension component is increased, and the surface of the overall air duct system is made smoother and more beautiful.

[0169] Preferably, after determining the specifications and quantity of the required first sheet-like air duct body and sheet-like member, each first sheet-like air duct body and sheet-like member are packaged in rolls. Each first sheet-like air duct body and sheet-like member are packaged in independent rolls, that is, each sheet-like air duct body is coated and sealed after being rolled, and then multiple independent rolls can be packaged again and then transported to the construction site to solve the packaging protection problem of a single sheet-like air duct body product, which not only makes the roll package more beautiful, but also facilitates the transportation and transfer of the sheet-like air duct body.

[0170] The curling direction of the first sheet-like air duct body is consistent with its curling direction into a ring, and the curling direction of the sheet piece is consistent with the ring-forming direction of the second sheet-like air duct body after cutting. Through the above-mentioned wrapping method, the internal stress generated during wrapping and ring-forming is consistent, so as to produce a certain shaping effect on the ring-shaped air duct body and make the appearance of the rubber-plastic composite air duct system formed later smoother and more beautiful.

[0171] The on-site installation method of this embodiment can realize the on-site installation of the rubber-plastic composite air duct with a certain thickness, strength and elasticity.

[0172] The embodiment of the present application further provides a rubber-plastic composite air duct system, which includes a main air duct 7. An air inlet is provided at one end of the main air duct 7, and the main air duct 7 includes a plurality of annular air duct bodies.

[0173] The length direction of each annular air duct body and the circumference of the ends where two adjacent annular air duct bodies are connected are provided with air duct connectors 3. The air duct connectors 3 can be cut off at any position and maintain their functions.

[0174] The positions of the air duct connectors 3 are configured so that after all the air duct connectors 3 are used, the plurality of annular air duct bodies are all annular, and adjacent annular air duct bodies are connected to each other to form a main air duct 7 .

[0175] In this embodiment, the annular air duct body is a rubber-plastic composite air duct with a certain thickness, strength and elasticity, and the annular air duct body includes a fabric layer and a rubber-plastic layer arranged outside the fabric layer. The rubber-plastic layer includes an integrally formed insulation layer and a protective layer from the inside to the outside.

[0176] The above-mentioned thermal insulation layer adopts flexible rubber-plastic thermal insulation material, which has thermal insulation function and can prevent the cold / hot air flow in the annular air duct body from exchanging heat with the outside, causing energy loss of the air conditioning and ventilation system.

[0177] In this embodiment, the annular air duct body having a size different from other standard annular air duct bodies is configured to be cut according to the size required at the construction site.

[0178] See also Figure 8 As shown, the annular air duct body includes a first annular air duct body 1 of a standard straight tube, a second annular air duct body 2 of a non-standard straight tube obtained by cutting a sheet, and a third annular air duct body 10 shortened from the first annular air duct body 1. The second annular air duct body 2 includes a reducer and a turning elbow. The first annular air duct body 1 may include multiple specifications, and accordingly, the shortened third annular air duct body 10 may also have multiple specifications.

[0179] In this embodiment, the annular air duct body is provided with a joint extending along the length direction, and the joint divides the annular air duct body into a first end and a second end. The sub-connector 31 of the air duct connector 3 is connected to the first end, and the female connector 32 of the air duct connector 3 is connected to the second end. The first end and the second end of the annular air duct body are connected by connecting the sub-connector 31 and the female connector 32.

[0180] Optionally, the plane where the butt joint is located has a certain angle with the axial section of the annular air duct body, and the butt joints are connected by bonding and sealing to facilitate a tighter connection and better thermal insulation effect.

[0181] The ends of the two annular air duct bodies connected are respectively installed with the sub-connector 31 and the female connector 32 of the air duct connector 3 in the circumferential direction. After the sub-connector 31 and the female connector 32 are connected, the ends of the two adjacent annular air duct bodies are squeezed and sealed.

[0182] Optionally, the air duct connector 3 is a Velcro set, a plastic clip chain or a flexible flange strip.

[0183] When the air duct connector 3 is a Velcro set, it includes a sub-Velcro and a main Velcro, and the sub-Velcro and the main Velcro are connected by bonding.

[0184] When the air duct connector 3 is a plastic clip chain, it includes a matching sub-clip chain and a main clip chain, and the sub-clip chain is clamped in the clamping hole of the main clip chain to complete the connection.

[0185] When the air duct connector 3 is a flexible flange strip, it includes a first flange strip and a second flange strip, and the first flange strip and the second flange strip are connected by sewing or snapping. Optionally, a sub-snap is provided on the first flange strip, and a female snap is provided on the second flange strip, and the first flange strip and the second flange strip are connected by the sub-snap and the female snap.

[0186] See also Fig. 9 As shown, the rubber-plastic composite air duct system in this embodiment also includes a plurality of heat-insulating sealing strips 4, which are fixed to the outer surface of the connection of the annular air duct body in the length direction and the outer surface of the connection of the adjacent annular air duct bodies. The heat-insulating sealing strips 4 can further enhance the heat-insulating and air-leakage-proof effect. Among them, the air duct connector 3 is fixed to the inner surface of the annular air duct body.

[0187] The system further includes a branch air duct 8 extending laterally from the main air duct 7. The branch air duct 8 includes at least one annular air duct body, and the branch air duct 8 is connected to the main air duct 7 via a three-way connector 5. The rubber-plastic composite air duct system assembled by the main air duct 7 and the branch air duct 8 can be quickly connected on site to form an air duct system of any structure.

[0188] In this embodiment, the annular air duct body connected to the branch air duct 8 in the main air duct 7 is the first connecting tube 91, and the annular air duct body connected to the first connecting tube 91 in the branch air duct 8 is the second connecting tube 92. A through hole is opened in the middle of the first connecting tube 91, and is connected to the end of the second connecting tube 92 through the through hole.

[0189] Among them, the first connecting tube 91 is provided with a duct connector 3 in the length direction to make it annular, and the two ends of the first connecting tube 91 are circumferentially provided with a sub-connector 31 and a female connector 32 of the duct connector 3 respectively, so as to facilitate connection with the adjacent end of the annular duct body.

[0190] Among them, the second connecting tube 92 is provided with a duct connector 3 in the length direction to make it annular, and one end of the second connecting tube 92 is circumferentially provided with a sub-connector 31 or a mother connector 32 of the duct connector 3 to facilitate connection with the adjacent end of the annular duct body, and the other end of the second connecting tube 92 is connected to the first connecting tube 91 through a three-way connector 5.

[0191] Preferably, the three-way connector 5 comprises a straight pipe section 52 and a flange 51. The straight pipe section 52 is used to connect with the second connecting pipe 92, and the flange 51 is integrally formed with the straight pipe section 52, and the flange 51 is used to connect with the first connecting pipe 91.

[0192] The straight pipe section 52 and the flange edge 51 are formed by bending a flexible flange strip having an L-shaped cross section, and a joint is formed at the butt joint.

[0193] In this embodiment, the end surface of the flange edge 51 close to the straight pipe section 52 is bonded and fixed to the inner surface of the first connecting pipe 91 located at the through hole.

[0194] Optionally, the end surface of the flange edge 51 close to the straight pipe section 52 is an arc surface that matches the inner surface of the first connecting pipe 91 at the through hole.

[0195] The outer surface of the first connecting pipe 91 at the through hole is bonded and connected to the straight pipe section 52 by a heat-insulating sealing tape. The straight pipe section 52 is inserted into the second connecting pipe 92 and bonded and connected to the second connecting pipe 92.

[0196] In other embodiments, a three-way connector 5 of a suitable size may be selected to facilitate sleeve placement of the straight pipe section 52 on the outside of the second connecting pipe 92 for fixation.

[0197] In this embodiment, the three-way connector 5 can be manufactured on-site at the construction site according to the size of the three-way connector to meet the size change requirements of the construction site.

[0198] In other embodiments, the three-way connector 5 can be made of metal, plastic or rubber-plastic material, and can be prefabricated in a factory according to given dimensions.

[0199] When the flange 51 and the straight pipe section 52 are made of rigid materials, a clamp can be sleeved on the outside of the second connecting pipe 92, and then after the straight pipe section 52 is inserted into the branch air duct 8, the second connecting pipe 92 and the straight pipe section 52 are clamped and connected through the clamp.

[0200] The rubber-plastic composite air duct system of this embodiment further includes a suspension mechanism 6 , which includes a suspension component, a connecting rope 66 and a suspension steel rope 63 .

[0201] The suspension component is arranged in the annular air duct body, and is used to support the annular air duct body to form a required cross-sectional shape and air duct width.

[0202] The connecting rope 66 is passed through the above-mentioned annular air duct body, and the end of the connecting rope 66 located inside the annular air duct body is provided with a first connecting part 67 connected to the suspension component, and the end of the connecting rope 66 located outside the annular air duct body is provided with a second connecting part 68; the perforation of the above-mentioned annular air duct body through which the connecting rope 66 is passed is coated with sealant.

[0203] One end of the suspension steel rope 63 is fixed to the second connection portion 68, and the other end of the suspension steel rope 63 is connected to the suspension point.

[0204] When the cross-sectional shape of the annular duct body is circular, the suspension assembly includes at least two suspension slide bars 61, which are arranged along the length direction of the annular duct body, and each suspension slide bar 61 is respectively inserted into a row of perforated belts.

[0205] When the cross-sectional shape of the annular air duct body is non-circular, the suspension assembly includes two suspension slide bars 61 and a plurality of inner support slide bars 62 .

[0206] Both ends of the plurality of inner supporting slide bars 62 are respectively connected to the two suspension slide bars 61 to form the above-mentioned suspension assembly.

[0207] The length of the inner support slide bar 62 and the installation position of the suspension slide bar 61 are configured so that after the suspension mechanism 6 is installed on the annular air duct body, the annular air duct body is formed into a desired cross-sectional shape and air duct width.

[0208] See also Fig.10 As shown, optionally, the suspension mechanism 6 further includes a vertical support assembly, which includes a vertical support sliding rod 64 and a plurality of connecting short rods 65 .

[0209] The vertical support slide bar 64 is arranged along the length direction of the annular air duct body, and the vertical support slide bar 64 is located above the plane where the suspension assembly is located. One end of each connecting short rod 65 is respectively connected to an inner support slide bar 62, and the other end of each connecting short rod 65 is connected to the vertical support slide bar 64.

[0210] By providing a vertical support assembly, the cross-sectional shape of the annular air duct body can be kept unchanged when there is no ventilation.

[0211] Optionally, the annular air duct body includes a usage state and a transportation state.

[0212] When the annular air duct body is in use, the air duct connector 3 in the length direction of the annular air duct body is connected.

[0213] When the annular duct body is in the transport state, the duct connector 3 in the length direction is not connected, that is, the duct body is in sheet form. During transportation, the sheet duct body is rolled and packaged, and the curling direction during roll packaging is consistent with the ring-forming direction during use. When folding, there is no gap between the coils of the duct body, and the volume after folding is small, which is convenient for transportation and storage.

[0214] The rubber-plastic composite air duct system of the present embodiment uses a cuttable air duct connector 3 to quickly connect the annular air duct body at the construction site to form a rubber-plastic composite air duct system. In addition to being suitable for industrial plants, it can also be used in non-industrial plants such as civil, home, and supermarkets to meet the requirements of the construction site for changes in the size of the air duct, and realize one-time processing and lifting at the construction site to save construction time and reduce construction costs.

[0215] The present application is not limited to the above-mentioned implementation modes. For ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications are also considered to be within the scope of protection of the present application. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field.

Claims

1. A method for on-site installation of a rubber-plastic composite air duct system, characterized in that: It includes the steps of: Determine the required specifications and quantity of the first sheet-like air duct body and sheet-like members, the type and quantity of the suspension points and the suspension mechanism (6) according to the engineering information; Position the rubber-plastic composite air duct system to be constructed at the construction site; According to the positioning, the suspension points are installed at intervals, and the sheet-like member is cut to obtain a plurality of second sheet-like air duct bodies; A hole is punched in each sheet-like air duct body at a position corresponding to the suspension point, and a suspension mechanism (6) is installed; each sheet-like air duct body is a first sheet-like air duct body and a second sheet-like air duct body; The sheet-like air duct bodies are closed into a ring shape using the air duct connector (3), and after each suspension mechanism (6) is connected to the corresponding suspension point, the adjacent ring-shaped air duct bodies are connected to each other using the air duct connector (3), thereby completing the installation of the rubber-plastic composite air duct system; at the same time, The air duct connector (3) can be cut off at any position and maintain its function; The first sheet-like air duct body is pre-installed with an air duct connector (3) in the length direction. When the air duct connector (3) in the length direction of the first sheet-like air duct body is connected, the first sheet-like air duct body is annular, forming a first annular air duct body (1); The first sheet-shaped air duct body is pre-installed with a sub-connector and a female connector of an air duct connector (3) in the width direction thereof, for connecting with an adjacent annular air duct body.

2. The on-site installation method of the rubber-plastic composite air duct system according to claim 1, characterized in that: Also includes: According to the positioning, determining the length of the third sheet-like air duct body which is different from the length of the other first sheet-like air duct body; According to the length, part of the first sheet-shaped air duct body is cut along its width direction, and the cut air duct connector part is installed on the cut edge to obtain a third sheet-shaped air duct body.

3. The on-site installation method of the rubber-plastic composite air duct system according to claim 1, characterized in that: The sheet-like member is not pre-installed with an air duct connector (3), and after the sheet-like member is cut to obtain a plurality of second sheet-like air duct bodies, the method further comprises: An air duct connector (3) is installed in the length direction of the second sheet-like air duct body, and a sub-connector of the air duct connector (3) is installed in the width direction where the second sheet-like air duct body is connected to the end of an adjacent annular air duct body, and a female connector of the air duct connector (3) is installed at the end of the adjacent annular air duct body.

4. The on-site installation method of the rubber-plastic composite air duct system as claimed in claim 3, characterized in that: The installation of the air duct connector (3) specifically includes: The sub-connector and the female connector of the air duct connector (3) are respectively fixed to two side edges in the length direction of the second sheet-shaped air duct body, and are both fixedly connected to the outermost or innermost non-insulating layer at the side edges; The sub-connector of the air duct connector (3) is fixed to the side connected to the adjacent air duct body end in the width direction of the sheet-like air duct body, and is fixedly connected to the outermost or innermost non-insulating layer at the side, and the adjacent air duct body end is fixed with the female connector of the air duct connector (3).

5. The on-site installation method of the rubber-plastic composite air duct system according to claim 1, characterized in that: Also includes: The heat-insulating sealing strip (4) is fixed to the outer surface of the connection of the annular air duct body in the length direction and the outer surface of the connection of adjacent annular air duct bodies.

6. The on-site installation method of the rubber-plastic composite air duct system according to claim 1, characterized in that: When the annular air duct body is a reducer or a turning elbow, it is determined whether there is a corresponding special-shaped template, wherein the special-shaped template is: a first flat plate of the same size as the reducer or the turning elbow when it is in sheet form; If yes, the sheet is cut using the special-shaped template; Otherwise, according to the size data of the reducer or steering elbow, its curved surface is flattened by unfolding software, the shape and size of the reducer or steering elbow when it is in sheet form are determined, and linear marks are made on the sheet by measuring tools, and cutting is performed according to the linear marks.

7. The on-site installation method of the rubber-plastic composite air duct system according to claim 6, characterized in that: When unfolding the reducer, the unfolding software is used to calculate the unfolding according to the input length of the reducer, the inner and outer diameter information of both ends and the eccentric distance, so as to obtain the unfolding plane data; When the steering bend is unfolded, the unfolding software calculates the unfolding according to the input length, curvature radius, and inner and outer diameter information of the steering bend at both ends, and obtains the data of the unfolding plane.

8. The on-site installation method of the rubber-plastic composite air duct system according to claim 1, characterized in that: When a hole needs to be opened in the middle of the annular air duct body and connected with other annular air duct bodies to form a three-way or four-way structure, it is determined whether there is a corresponding hole opening template, and the hole opening template is: a second plate with the same size as the annular air duct body to be opened when it is in sheet form and opened with a hole, and the hole on the second plate is configured to form a through hole connected with other annular air duct bodies after the annular air duct body is opened; If yes, the hole-making template is used to cut and make holes in the sheet-like air duct body that forms the annular air duct body; Otherwise, based on the size data of the annular air duct body and other connected annular air duct bodies, and the connection position between the two, the curved surface of the annular air duct body is flattened through the unfolding software, the opening position of the annular air duct body when it is in sheet form is determined, and linear marks are made on the sheet-like air duct body through a measuring tool, and cutting is performed according to the linear marks.

9. The on-site installation method of the rubber-plastic composite air duct system as claimed in claim 8, characterized in that: Also includes: Two annular air duct bodies of a three-way structure (9) are connected by a three-way connector (5); the two annular air duct bodies are respectively a first connecting pipe (91) and a second connecting pipe (92); a through hole for connecting to the second connecting pipe (92) is provided in the middle of the first connecting pipe (91); The three-way connector (5) comprises a straight pipe section (52) and a flange edge (51) integrally formed at the end of the straight pipe section (52); the size of the flange edge (51) is larger than the size of the through hole.

10. The on-site installation method of the rubber-plastic composite air duct system according to claim 9, characterized in that: When the first connecting tube (91) is unfolded, the unfolding software is used to calculate the unfolding and obtain the unfolding plane data according to the input length of the first connecting tube (91), the inner and outer diameter information of the first connecting tube (91) and the second connecting tube (92), the angle and eccentricity between the two, and the distance from the end center of the end face of the second connecting tube (92) away from the first connecting tube (91) to the end of the first connecting tube (91) in the axial direction of the first connecting tube (91).

11. The on-site installation method of the rubber-plastic composite air duct system according to claim 9, characterized in that: The method of connecting the first connecting pipe (91) and the second connecting pipe (92) using a three-way connector (5) specifically includes: Passing the flange edge (51) through the through hole and placing it in the first connecting tube (91), bonding the end surface of the flange edge (51) close to the through hole to the inner surface of the first connecting tube (91) located at the through hole; The outer surface of the first connecting pipe (91) at the through hole is bonded and sealed to the straight pipe section (52) by using a heat-insulating sealing tape; The straight pipe section (52) is inserted into the second connecting pipe (92), and the outer wall of the straight pipe section (52) and the inner wall of the second connecting pipe (92) are bonded and sealed.

12. The on-site installation method of the rubber-plastic composite air duct system according to claim 9, characterized in that: Also includes: According to the size data of the two annular air duct bodies forming the three-way structure (9), the flexible flange strip with an L-shaped cross section is cut to obtain a three-way connector body with an L-shaped cross section; The three-way connector body is bent into a ring shape, and the butt joints are joined to form the flange edge (51) and the straight pipe section (52).

13. The on-site installation method of the rubber-plastic composite air duct system according to claim 1, characterized in that: The suspension mechanism (6) comprises a suspension component and a suspension steel rope; The mounting and suspension mechanism (6) specifically comprises: According to the positioning of the rubber-plastic composite air duct system to be constructed, the cross-sectional shape and the width of the annular air duct body are determined, and then the installation position of the suspension assembly is determined; According to the installation position of the suspension assembly, determine the perforation position of the air duct body and perform perforation; A connecting rope (66) is installed at the perforated position, and glue is applied to seal each perforated position; the end of the connecting rope (66) located inside the air duct body is provided with a first connecting portion (67), and the end of the connecting rope (66) located outside the air duct body is provided with a second connecting portion (68); The suspension assembly is connected to the first connection part (67), and one end of the suspension steel rope (63) is fixed to the second connection part (68).

14. The on-site installation method of the rubber-plastic composite air duct system according to claim 13, characterized in that: When the cross-sectional shape of the annular air duct body is circular, the suspension assembly comprises at least two suspension slide bars (61), and the installation positions of the suspension slide bars (61) are determined; When the cross-sectional shape of the annular air duct body is non-circular, the suspension assembly includes two suspension slide bars (61) and a plurality of inner support slide bars (62). The length of the inner support slide bars (62) and the installation position of the suspension slide bars (61) are determined according to the width of the air duct of the cross-sectional shape, and the two ends of the plurality of inner support slide bars (62) are respectively connected to the two suspension slide bars (61).

15. The on-site installation method of the rubber-plastic composite air duct system according to claim 1, characterized in that: Also includes: Each first sheet-like air duct body and sheet-like element are respectively packaged into rolls and then transported to the construction site; the curling direction of the first sheet-like air duct body is consistent with the direction in which it is curled into a ring, and the curling direction of the sheet-like element is consistent with the ring-forming direction of the second sheet-like air duct body.

16. A rubber-plastic composite air duct system, characterized in that: It includes: A main air duct (7), wherein one end of the main air duct (7) is provided with an air inlet, and the main air duct (7) comprises a plurality of annular air duct bodies; An air duct connector (3) is provided in the length direction of each annular air duct body and in the circumferential direction of the end where two annular air duct bodies are connected; the air duct connector (3) can be cut off at any position and maintain its function; The position of the air duct connector (3) is configured so that after all the air duct connectors (3) are used, adjacent annular air duct bodies are connected to each other to form a main air duct (7); The annular duct body, which is different in size from other standard annular duct bodies, is configured to be cut according to the required size at the construction site.

17. The rubber-plastic composite air duct system according to claim 16, characterized in that: Also includes: A heat-insulating sealing strip (4), wherein the heat-insulating sealing strip (4) is fixed to the outer surface of the connection of the annular air duct body in the length direction and the outer surface of the connection of adjacent annular air duct bodies; There is an angle between the plane where the connection point of the annular air duct body in the length direction is located and the axial cross-section of the annular air duct body.

18. The rubber-plastic composite air duct system according to claim 16, characterized in that: Also includes: a branch air duct (8) extending laterally from the main air duct (7), the branch air duct (8) comprising at least one annular air duct body, and the branch air duct (8) being connected to the main air duct (7) via a three-way connector (5); The annular air duct body connected with the main air duct (7) and the branch air duct (8) is the first connecting tube (91), and the annular air duct body connected with the branch air duct (8) and the first connecting tube (91) is the second connecting tube (92). A through hole connected to the second connecting tube (92) is provided in the middle of the first connecting tube (91).

19. The rubber-plastic composite air duct system according to claim 18, characterized in that: The three-way connector (5) comprises: a straight pipe section (52), which is inserted into the second connecting pipe (92) and is bonded and connected to the second connecting pipe (92); A flange (51) is integrally formed at the end of the straight pipe section (52); the flange (51) passes through the through hole and is placed in the first connecting pipe (91), and is bonded and fixed to the inner surface of the first connecting pipe (91) at the through hole; The straight pipe section (52) and the flange edge (51) are formed by bending a flexible flange strip with an L-shaped cross section, and a joint is formed at the butt joint.

20. The rubber-plastic composite air duct system according to claim 16, characterized in that: It also includes a suspension mechanism (6), wherein the suspension mechanism (6) includes: A suspension assembly is disposed in the annular air duct body and is used to support the annular air duct body to form a desired cross-sectional shape and air duct width; A connecting rope (66) is passed through the annular air duct body, the end of the connecting rope (66) located inside the annular air duct body is provided with a first connecting portion (67) connected to the suspension assembly, and the end of the connecting rope (66) located outside the annular air duct body is provided with a second connecting portion (68); the hole of the annular air duct body through which the connecting rope (66) is passed is coated with sealant; A suspension steel rope (63) has one end fixed to the second connection portion (68) and the other end connected to a suspension point.

21. The rubber-plastic composite air duct system according to claim 20, characterized in that: The suspension assembly comprises: Two suspension slide bars (61) are provided; There are multiple inner supporting slide bars (62), and both ends of the multiple inner supporting slide bars (62) are respectively fixed on the two suspension slide bars (61); The length of the inner support slide bar (62) and the installation position of the suspension slide bar (61) are configured so that after the suspension mechanism (6) is installed in the annular air duct body, the annular air duct body is formed into a desired cross-sectional shape and air duct width.

22. The rubber-plastic composite air duct system according to any one of claims 16 to 21, characterized in that: The annular air duct body includes a use state and a transportation state; When the annular air duct body is in use, the air duct connector (3) in the length direction thereof is connected; When the annular air duct body is in a transport state, the air duct connector (3) in the length direction thereof is not connected and the air duct body is rolled and packaged, and the curling direction during the roll packaging is consistent with the ring-forming direction during the use state.

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