PVC (polyvinyl chloride) pipe with fireproof and heat-insulating properties

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) pipes, in particular to a PVC pipe with fireproof thermal insulation performance, which comprises an inner pipe, connecting columns and an outer pipe, the connecting columns are symmetrically arranged on the outer surface of the inner pipe, the other ends of the connecting columns are connected with the outer pipe, the outer pipe is positioned on the outer side of the inner pipe, a rock wool board is mounted on the outer surface of the inner pipe, and the rock wool board is connected with the inner pipe. The rock wool board is located in the outer pipe, a first silencing assembly is arranged on an interlayer between the rock wool board and the outer pipe, and the silencing assembly is used for isolating sound of water flow in the pipeline. The sound insulation effect is achieved through the rock wool board, the first sound attenuation assembly and the second sound attenuation assembly, when water flow flows in the pipeline, flowing noisy sound waves sequentially pass through the inner pipe, the rock wool board, the first sound attenuation assembly and the outer pipe to be transmitted outwards, the rock wool board and the first sound attenuation assembly obstruct sound, only the connecting column can transmit the sound waves, and the sound waves can be transmitted through the second sound attenuation assembly. And a second silencing assembly is arranged in the connecting column, so that propagation of noise sound waves in the connecting column is reduced to a great extent.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC pipes, in particular to a PVC pipe with fireproof and heat-insulating properties. Background Art

[0002] PVC is the English abbreviation of polyvinyl chloride. PVC pipe usually refers to a material made of polyvinyl chloride with other ingredients added to enhance its heat resistance, toughness and ductility. It is a popular and widely used synthetic material in the world today. PVC pipes are everywhere in our daily lives. PVC pipes have been well received by the engineering community for their light weight, corrosion resistance, high compressive strength, safety and convenience.

[0003] Patent document CN212389872U discloses a pollution-free, green and environmentally friendly PVC pipe with an inner diameter coated with an insulating layer to isolate water sources. The PVC pipe in this patent document effectively improves the water-isolating effect of the water pipe by setting a waterproof layer. However, the PVC pipe in this patent document does not take into account that the flow of water inside the pipe body will generate noise, which is likely to affect people near the PVC pipe installation environment. Utility Model Content

[0004] One purpose of the present application is to provide a PVC pipe with fireproof and heat-insulating properties to solve the problem that the PVC pipe in the prior art does not take into account that the flow of water inside the pipe body will generate noise, which is likely to affect people near the PVC pipe installation environment.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a PVC pipe with fireproof and heat-insulating properties, comprising an inner pipe, a connecting post, and an outer pipe, wherein the outer surface of the inner pipe is symmetrically provided with connecting posts, the other end of the connecting post is connected to the outer pipe, and the outer pipe is located outside the inner pipe, a rock wool board is installed on the outer surface of the inner pipe, and the rock wool board is located inside the outer pipe, and a first silencer component is provided in the interlayer between the rock wool board and the outer pipe, and the silencer component is used to isolate the sound of water flowing inside the pipe;

[0006] The first sound-absorbing component includes sound-absorbing cotton, a sound insulation tube and a first cavity. Sound-absorbing cotton is installed on the outer surface of the rock wool board, and a sound insulation tube is provided on the outer surface of the sound-absorbing cotton. The connecting column passes through the rock wool board, sound-absorbing cotton and the sound insulation tube. The interlayer between the sound insulation tube and the outer tube is the first cavity.

[0007] Preferably, a second silencer assembly is provided inside the connecting column, and the second silencer assembly is used to reduce the propagation of water flow noise inside the connecting column. Main support rods are installed at the top and bottom centers of the connecting column, and two groups of partitions are installed on the inner wall of the connecting column from top to bottom, and the partitions are located on the outside of the main support rods. Reinforcing cross bars are evenly installed on the outer surface of the connecting column, and the reinforcing cross bars are located between the two groups of partitions, and one end of the reinforcing cross bar is connected to the inner wall of the connecting column.

[0008] Preferably, the second silencer assembly includes a second cavity and filled sound insulation cotton. The space formed by the upper partition inside the connecting column and the connecting column and the space formed by the lower partition inside the connecting column and the connecting column are the second cavity. The space between the upper partition inside the connecting column and the lower partition is filled with filled sound insulation cotton, and the filled sound insulation cotton will strengthen the wrapping of the cross bar.

[0009] Preferably, the inner surface of the inner tube is provided with an anti-corrosion coating, and the outer surface of the outer tube is provided with a fireproof layer.

[0010] Preferably, a fixing frame is equidistantly provided on the outside of the outer tube, and support columns are symmetrically installed on the inner bottom wall of the fixing frame, and the other end of the support column is connected to the outer tube.

[0011] Preferably, buffer rubber pads are installed on the top and bottom of the inner wall of the fixed frame, and the buffer rubber pads are in contact with the fireproof layer on the outer surface of the outer tube. Fixed blocks are symmetrically installed on the inner side wall of the fixed frame, and one side of the fixed block is connected to the fireproof layer on the outer surface of the outer tube.

[0012] Preferably, fixing plates are symmetrically mounted on the outer surface of the fixing frame, and the bottom surface of the fixing plates is coplanar with the bottom surface of the fixing frame, and a mounting hole is provided through the top center of the fixing plates.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In the present invention, the sound insulation effect is achieved by the rock wool board, the first silencer component and the second silencer component. When water flows inside the pipe, the noise generated by the flow will be transmitted through the medium, and the sound waves will propagate to the outside through the inner pipe, the rock wool board, the sound-absorbing cotton, the sound insulation tube, the first cavity and the outer pipe in turn. The rock wool board has an excellent sound insulation effect, the sound-absorbing cotton further absorbs the sound waves, and the sound insulation tube also blocks the propagation of the sound waves to a certain extent. The first cavity cuts off the medium for sound wave conduction, so only the connecting column can transmit the greatly weakened sound waves, and the second silencer component arranged in the connecting column greatly reduces the propagation of noise waves in the connecting column, further improving the sound insulation effect of the PVC pipe, so that the PVC pipe can effectively isolate the noise of water flowing in the pipe.

[0015] 2. In the present invention, the fixing plate on the fixing frame can facilitate the installation of the PVC pipe. When installing the PVC pipe, the staff can use bolts or screws to insert them into the mounting holes on the fixing plate, thereby achieving partial fixation of the PVC pipe, which is convenient for the staff to install and fix the PVC pipe. In addition, the buffer rubber pad arranged in the fixing frame arranged on the outside of the PVC pipe can provide a buffering effect when the PVC pipe is impacted by external force, thereby protecting the PVC pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 For the utility model Figure 1 A magnified schematic diagram of the structure at A;

[0018] Figure 3 This is a vertical cross-sectional view of the connecting column of the utility model;

[0019] Figure 4 This is a transverse cross-sectional view of the connecting column of the present invention;

[0020] Figure 5 This is a schematic diagram of the installation of the fixing frame of the present utility model.

[0021] In the figure: 1. Inner tube; 2. Connecting column; 3. Outer tube; 4. Anti-corrosion coating; 5. Rock wool board; 6. Sound-absorbing cotton; 7. Sound insulation tube; 8. First cavity; 9. Fireproof layer; 10. Main support rod; 11. Partition; 12. Reinforced cross bar; 13. Second cavity; 14. Filling sound insulation cotton; 15. Fixed frame; 16. Support column; 17. Fixed block; 18. Buffer rubber pad; 19. Fixed plate; 20. Mounting hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0025] The following is combined with Figure 1-4 , the technical solution of the utility model is further explained:

[0026] Example 1: Figure 1 and Figure 2As shown, a PVC pipe with fireproof and heat-insulating properties includes an inner pipe 1, a connecting column 2 and an outer pipe 3. The outer surface of the inner pipe 1 is symmetrically provided with connecting columns 2, and the other end of the connecting column 2 is connected to the outer pipe 3, and the outer pipe 3 is located on the outside of the inner pipe 1. The outer surface of the inner pipe 1 is installed with a rock wool board 5, and the rock wool board 5 is located inside the outer pipe 3. The interlayer between the rock wool board 5 and the outer pipe 3 is provided with a first silencer component, and the silencer component is used to isolate the sound of water flow inside the pipeline. The first silencer component includes sound-absorbing cotton 6, a sound insulation tube 7 and a first cavity 8. The outer surface of the rock wool board 5 is installed with sound-absorbing cotton 6, and the outer surface of the sound-absorbing cotton 6 is provided with a sound insulation tube 7. The connecting column 2 passes through the rock wool board 5, sound-absorbing cotton 6 and the sound insulation tube 7, and the interlayer between the sound insulation tube 7 and the outer pipe 3 is the first cavity 8. The inner tube 1 provides an installation position for the connecting column 2, and the connecting column 2 connects the outer tube 3 and the inner tube 1. The inner tube 1 and the space between the inner tube 1 and the outer tube 3 provide an installation position for the rock wool board 5 and the first sound-absorbing component. The rock wool board 5 is an inorganic thermal insulation material formed by high-temperature melting and fiberization with natural rock as raw material. It has good thermal insulation performance, high fire resistance and excellent sound insulation effect. The rock wool board 5 provides an installation position for the sound-absorbing cotton 6, and the sound-absorbing cotton 6 provides an installation position for the sound insulation tube 7. The connection between the sound insulation tube 7 and the connecting column 2 ensures the stability of the sound insulation tube 7. The sound insulation tube 7 is made of a hard board material with good sound insulation effect. The sound insulation tube 7 can be a mineral wool board. The spatial interlayer forms a first cavity 8, which is a vacuum layer. The vacuum layer can cut off the medium for sound wave transmission to achieve sound blocking; when water flows inside the pipe, the noise generated by the flow will be transmitted through the medium, and the sound waves will pass through the inner pipe 1, rock wool board 5, sound-absorbing cotton 6, sound insulation tube 7, first cavity 8 and outer pipe 3 in turn to propagate to the outside. The rock wool board 5 not only has the function of heat preservation, but also has excellent sound insulation effect. The sound-absorbing cotton 6 further absorbs sound waves, and the sound insulation tube 7 also blocks the propagation of sound waves to a certain extent. The first cavity 8 cuts off the medium for sound wave transmission, so only the connecting column 2 can transmit the greatly weakened sound waves, thereby effectively isolating the noise of water flow in the pipe.

[0027] Example 2: Figure 1 、 Figure 3 and Figure 4As shown, a second silencer assembly is provided inside the connecting column 2, and the second silencer assembly is used to reduce the propagation of the noise of the water flow inside the connecting column 2. A main support rod 10 is installed at the top and bottom center of the connecting column 2. Two groups of partitions 11 are installed on the inner wall of the connecting column 2 from top to bottom, and the partitions 11 are located on the outside of the main support rod 10. Reinforcement cross bars 12 are evenly installed on the outer surface of the connecting column 2, and the reinforcement cross bars 12 are located between the two groups of partitions 11. One end of the reinforcement cross bar 12 is in contact with the inner wall of the connecting column 2. Connection, the second silencer assembly includes a second cavity 13 and filled sound insulation cotton 14, the space formed by the upper partition 11 inside the connecting column 2 and the connecting column 2 and the space formed by the lower partition 11 inside the connecting column 2 and the connecting column 2 is the second cavity 13, the space between the upper partition 11 and the lower partition 11 inside the connecting column 2 is filled with filled sound insulation cotton 14, and the filled sound insulation cotton 14 wraps the reinforcing cross bar 12, the inner surface of the inner tube 1 is installed with an anti-corrosion coating 4, and the outer surface of the outer tube 3 is installed with a fireproof layer 9. The connecting column 2 provides an installation position for the main support rod 10, the partition 11 and the reinforcing cross bar 12. The main support rod 10 is the main force-bearing structure of the connecting column 2. The partition 11 divides the internal space of the connecting column 2 into three different areas. The connection between the reinforcing cross bar 12 and the main support rod 10 between the two groups of partitions 11 can improve the structural strength of the overall connecting column 2. The filling sound insulation cotton 14 between the two groups of partitions 11 and the second cavity 13 set in the connecting column 2 can reduce the propagation of noise inside the connecting column 2; the inner tube 1 provides an installation position for the anti-corrosion coating 4, which can effectively improve the corrosion resistance of the PVC pipe, prevent the liquid in the pipeline from corroding the inner tube 1 and affecting the service life of the PVC pipe. The outer tube 3 provides an installation position for the fireproof layer 9. The fireproof layer 9 can be a fireproof coating or a material with fireproof function, such as aluminum silicate wool mesh; when sound waves propagate inside the connecting column 2, the two groups of second cavities 13 and the filling sound insulation cotton 14 are used to reduce the propagation of noise waves in the connecting column 2, further improving the sound insulation effect of the PVC pipe.

[0028] Example 3: Figure 1 and Figure 5As shown, a fixing frame 15 is equidistantly arranged on the outside of the outer tube 3, and a support column 16 is symmetrically installed on the inner bottom wall of the fixing frame 15, and the other end of the support column 16 is connected to the outer tube 3, and a buffer rubber pad 18 is installed on the top and bottom of the inner wall of the fixing frame 15, and the buffer rubber pad 18 is in contact with the fireproof layer 9 on the outer surface of the outer tube 3, and a fixing block 17 is symmetrically installed on the inner side wall of the fixing frame 15, and one side of the fixing block 17 is connected to the fireproof layer 9 on the outer surface of the outer tube 3, and a fixing plate 19 is symmetrically installed on the outer surface of the fixing frame 15, and the bottom surface of the fixing plate 19 is coplanar with the bottom surface of the fixing frame 15, and a mounting hole 20 is opened through the top center of the fixing plate 19. The fixing frame 15 arranged on the outside of the outer tube 3 can facilitate the installation of the PVC pipe. The fixing frame 15 provides an installation position for the support column 16. The support column 16 connects the PVC pipe as a whole to the fixing frame 15. The buffer rubber pads 18 arranged on the top and bottom of the inner wall of the fixing frame 15 can provide a buffering effect when the PVC pipe is impacted by external force, thereby protecting the PVC pipe. The fixing block 17 installed on the inner side wall of the fixing frame 15 improves the connection stability between the fixing frame 15 and the PVC pipe. The fixing frame 15 provides an installation position for the fixing plate 19, and the fixing plate 19 provides an opening position for the mounting hole 20. The cooperation between the fixing plate 19 and the mounting hole 20 facilitates the installation of the PVC pipe. When installing the PVC pipe, the staff can

[0029] Working principle: Before using the PVC pipe with fireproof and heat-insulating performance, you should first check whether the PVC pipe with fireproof and heat-insulating performance has any problems that affect its use. First, place the PVC pipe with fireproof and heat-insulating performance at the location where it needs to be used, and install and fix the PVC pipe through the fixing frame 15. Insert the bolts or screws into the mounting holes 20 on the fixing plate 19, and insert the bolts or screws into the mounting plate or wall to achieve partial fixation of the PVC pipe. The fixing plate 19 on the outside of the fixing frame 15 makes it easier for workers to install and fix the PVC pipe. The buffer rubber pad 18 provided in the fixing frame 15 provided on the outside of the PVC pipe can provide a buffering effect when the PVC pipe is impacted by external force, thereby protecting the PVC pipe.

[0030] When water flows inside the pipe, the noise generated by the flow will be transmitted through the medium, and the sound waves will propagate to the outside through the inner pipe 1, rock wool board 5, sound-absorbing cotton 6, sound insulation tube 7, first cavity 8 and outer pipe 3 in turn. The rock wool board 5 not only has the function of heat preservation, but also has excellent sound insulation effect. The sound-absorbing cotton 6 further absorbs sound waves, and the sound insulation tube 7 also blocks the propagation of sound waves to a certain extent. The first cavity 8 cuts off the medium for sound wave conduction, so only the connecting column 2 can transmit the greatly weakened sound waves, thereby effectively isolating the noise of water flow in the pipe; when the sound wave propagates inside the connecting column 2, the two groups of second cavities 13 and the filling sound insulation cotton 14 are used to reduce the propagation of noise waves in the connecting column 2, thereby further improving the sound insulation effect of the PVC pipe.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention, and any reference numerals in the claims should not be construed as limiting the claims to which they relate.

Claims

1. A PVC pipe with fireproof and heat-insulating properties, comprising an inner pipe (1), a connecting column (2) and an outer pipe (3), characterized in that: The outer surface of the inner tube (1) is symmetrically provided with a connecting column (2), the other end of the connecting column (2) is connected to the outer tube (3), and the outer tube (3) is located outside the inner tube (1); the outer surface of the inner tube (1) is installed with a rock wool board (5), and the rock wool board (5) is located inside the outer tube (3); the interlayer between the rock wool board (5) and the outer tube (3) is provided with a first silencer component, and the silencer component is used to isolate the sound of water flow inside the pipeline; The first sound-absorbing component comprises sound-absorbing cotton (6), a sound insulation tube (7) and a first cavity (8); the outer surface of the rock wool board (5) is installed with sound-absorbing cotton (6); the outer surface of the sound-absorbing cotton (6) is provided with a sound insulation tube (7); the connecting column (2) passes through the rock wool board (5), the sound-absorbing cotton (6) and the sound insulation tube (7); and the interlayer between the sound insulation tube (7) and the outer tube (3) is the first cavity (8).

2. The PVC pipe with fireproof and heat-insulating properties according to claim 1, characterized in that: A second silencer assembly is provided inside the connecting column (2), and the second silencer assembly is used to reduce the propagation of water flow noise inside the connecting column (2). Main support rods (10) are installed at the top and bottom centers of the connecting column (2). Two groups of partitions (11) are installed on the inner wall of the connecting column (2) from top to bottom, and the partitions (11) are located on the outside of the main support rod (10). Reinforcement cross bars (12) are evenly installed on the outer surface of the connecting column (2), and the reinforcement cross bars (12) are located between the two groups of partitions (11). One end of the reinforcement cross bar (12) is connected to the inner wall of the connecting column (2).

3. The PVC pipe with fireproof and heat-insulating properties according to claim 2, characterized in that: The second silencer assembly includes a second cavity (13) and filled sound insulation cotton (14); the space formed by the upper partition (11) inside the connecting column (2) and the connecting column (2) and the space formed by the lower partition (11) inside the connecting column (2) and the connecting column (2) constitute the second cavity (13); the space between the upper partition (11) and the lower partition (11) inside the connecting column (2) is filled with filled sound insulation cotton (14), and the filled sound insulation cotton (14) wraps the reinforcing cross bar (12).

4. The PVC pipe with fireproof and heat-insulating properties according to claim 1, characterized in that: The inner surface of the inner tube (1) is provided with an anti-corrosion coating (4), and the outer surface of the outer tube (3) is provided with a fireproof layer (9).

5. The PVC pipe with fireproof and heat-insulating properties according to claim 1, characterized in that: A fixing frame (15) is equidistantly arranged on the outside of the outer tube (3), and a supporting column (16) is symmetrically installed on the inner bottom wall of the fixing frame (15), and the other end of the supporting column (16) is connected to the outer tube (3).

6. The PVC pipe with fireproof and heat-insulating properties according to claim 5, characterized in that: Buffer rubber pads (18) are installed on the top and bottom of the inner wall of the fixing frame (15), and the buffer rubber pads (18) are in contact with the fireproof layer (9) on the outer surface of the outer tube (3). Fixed blocks (17) are symmetrically installed on the inner side walls of the fixing frame (15), and one side of the fixed block (17) is connected to the fireproof layer (9) on the outer surface of the outer tube (3).

7. The PVC pipe with fireproof and heat-insulating properties according to claim 5, characterized in that: A fixing plate (19) is symmetrically mounted on the outer surface of the fixing frame (15), and the bottom surface of the fixing plate (19) is coplanar with the bottom surface of the fixing frame (15). A mounting hole (20) is provided through the top center of the fixing plate (19).

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