CN218378351U

CN218378351U - PVC double-layer co-extrusion sewage pipe

Info

Publication number: CN218378351U
Application number: CN202222917929.3U
Authority: CN
Inventors: 魏愈尚
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-01-24
Anticipated expiration: 2032-10-31

Abstract

PVC double-deck crowded sewer pipe altogether, including the body, the body includes PVC inner tube layer and the outer resistance to compression layer of PVC, the outer resistance to compression layer of PVC sets up along the lateral wall spiral extension that body axial direction surrounded PVC inner tube layer, PVC inner tube layer and the outer resistance to compression layer combination of PVC form the double-deck crowded structure altogether of sewer pipe, the inside wall coating on PVC inner tube layer has the anti-corrosion coating, the outer resistance to compression layer of PVC is extended by outer cross-section unit spiral and is formed, and the outer resistance to compression layer of PVC of body adopts outer cross-section unit spiral to extend and forms, and the trapezoidal protruding structure of outer cross-section unit can make the outside of sewer pipe have better compressive property, avoids the sewer pipe to receive the impaired crushing of external pressure effect. The integral forming of the PVC inner pipe layer and the PVC outer anti-pressure layer is completed through a double-layer co-extrusion process, so that the connection tightness of the PVC inner pipe layer and the PVC outer anti-pressure layer is improved, the main structure strength of the sewage pipe is guaranteed, the manufacturing difficulty of the sewage pipe is greatly reduced, the production efficiency is improved, and the mass production is realized.

Description

PVC double-layer co-extrusion sewage pipe

Technical Field

The utility model belongs to the technical field of tubular product, concretely relates to double-deck sewage pipe altogether of PVC.

Background

PVC is an important thermoplastic plastic, has the outstanding characteristics of rich raw materials, mature manufacturing process, low price, wide application and the like, and is the second most common resin with the output and the demand second to polyethylene in the world market at present. The PVC has simple processing technology, has great advantages in performance and price, has very important position in industrial production, and is widely applied to industries such as industry, agriculture, building, transportation, electric power, telecommunication, packaging and the like.

The sewage pipe has a severe service environment, is mainly used for sewage transportation, and has strong corrosivity, so that the sewage pipe has an anti-corrosion performance in terms of production of the sewage pipe. Like the chinese utility model patent of patent number 201920960495.0, it discloses a corrosion-resistant PVC blow off pipe, and its the most inboard corrosion resistant layer that is, and set up the buffer beam in the blow off pipe, when the increase of sewage displacement, the buffer beam can slow down sewage to the inside impact of PVC pipe, and the buffer beam forms the rebound and alleviates the effect of sewage impact force, has promoted the inside protection of PVC pipe. The sewage discharge pipe can only implement buffer protection on the sewage impact force inside the PVC pipe, has insufficient impact resistance on the external impact of the sewage discharge pipe, and is easy to crush by external pressure. For the sewage pipeline, under the condition that the inside of the sewage pipeline is not blocked, the water pressure is not large generally, because sewage can flow away along the sewage pipeline after entering the sewage pipeline, certain water pressure can not be given to water flow from the outside for conveying like a water supply pipeline, and the water pressure of the sewage pipeline is not large because the water pressure is generated by the sewage pipeline per se. The sewage pipe is generally embedded underground, and pressure given by an embedded object and a road surface exists, so that pressure impact borne by the outer wall of the sewage pipe is increased, and the pressure resistance of the outer wall of the sewage pipe needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a PVC double-layer co-extrusion sewage pipe.

The utility model provides a technical scheme that its technical problem adopted is:

PVC double-deck crowded sewer pipe altogether, including the body, the body includes PVC inner tube layer and the outer resistance to compression layer of PVC, the outer resistance to compression layer of PVC sets up along the lateral wall spiral extension that body axial direction surrounded PVC inner tube layer, PVC inner tube layer and the outer resistance to compression layer combination of PVC form the double-deck crowded structure altogether of sewer pipe, the inside wall coating on PVC inner tube layer has the anticorrosion coating, the outer resistance to compression layer of PVC is extended by outer cross-section unit spiral and is formed, outer cross-section unit includes trapezoidal arch and is located the connecting portion of trapezoidal protruding bottom both sides, the lateral wall laminating of connecting portion and PVC inner tube layer, trapezoidal bellied inside is equipped with the buffer cavity who is used for the resistance to compression buffering, trapezoidal bellied top is equipped with a plurality of strengthening ribs that are used for reinforcing trapezoidal protruding lateral wall structural strength, the interval forms the resistance to deformation recess between the strengthening rib.

The utility model discloses in, the buffering cavity is arc cavity structure.

The utility model discloses in, the anticorrosive coating adopts epoxy composite coating to form.

The utility model discloses in, the outside on the outer compressive layer of PVC is equipped with the steel frame layer, form spiral groove between the trapezoidal arch adjacent in the outer compressive layer of PVC, the steel frame layer extends the setting along spiral groove, the steel frame level is in spiral groove, the lateral wall cladding of body has one deck glass fiber layer, the inside wall on glass fiber layer and the top on the outer compressive layer of PVC, the top on steel frame layer are connected in turn.

The utility model discloses in, the top on steel frame layer and the top parallel and level of the outer compressive layer of PVC or be less than the top of the outer compressive layer of PVC.

The utility model discloses in, the steelframe layer adopts the trapezoidal cross-section unit spiral shaping with spiral groove looks adaptation.

The utility model discloses in, the inside of trapezoidal cross-section unit is trapezoidal cavity.

The utility model discloses in, fill insulation material in buffering cavity and the trapezoidal cavity.

The utility model discloses in, the both ends of body are equipped with and are used for connecting pipe joint to carry out the link of connecting between two bodys, the link is by anti-corrosion coating, PVC interior tube sheet and connecting portion from interior to exterior range upon range of constitution in proper order, the lateral wall of link is equipped with the screw thread, and the body passes through threaded connection with the pipe joint.

The utility model discloses in, the coupling is including connecting the body, it is the cylinder tubular construction to connect the body, connect the body inside be equipped with two internal thread sections and a divider ring that are used for connecting two body links respectively, the divider ring is located the middle part that connects the body, the divider ring is located between two internal thread sections, the both sides of divider ring are equipped with and are used for the sealed sealing ring of terminal surface laminating with two body links.

The beneficial effects of the utility model are that: the utility model discloses a sewage pipe, the outer resistance to compression layer of PVC of body adopt outer cross-section unit spiral extension to form, and the trapezoidal protruding structure of outer cross-section unit can make the outside of sewage pipe have better compressive property, avoids the sewage pipe to receive the impaired crushing of external pressure effect. The integral forming of the PVC inner pipe layer and the PVC outer anti-pressure layer is completed through a double-layer co-extrusion process, so that the connection tightness of the PVC inner pipe layer and the PVC outer anti-pressure layer is improved, the main structure strength of the sewage pipe is guaranteed, the manufacturing difficulty of the sewage pipe is greatly reduced, the production efficiency is improved, and the mass production is realized. And the PVC inner pipe layer of body adopts hollow cylinder's body structure, and the PVC inner pipe layer of being convenient for carries out anti-corrosion coating work, and the inside wall of anti-corrosion coating after the coating is smooth level and smooth, when having corrosion resistance, can effectively reduce the interior residual pollutant of sewage, makes sewage smoothly flow.

Drawings

FIG. 1 is a schematic cross-sectional view of a tube body according to the present embodiment;

FIG. 2 is a schematic cross-sectional view of the PVC outer pressure-resistant layer of the present embodiment;

FIG. 3 is a schematic cross-sectional view of the outer layer cross-sectional element of this embodiment;

FIG. 4 is a schematic cross-sectional view of the trapezoidal cross-section unit of this embodiment;

FIG. 5 is a schematic view of the connection between two pipes and a pipe joint according to the present embodiment;

FIG. 6 is a schematic sectional view showing the structure of the pipe joint according to the present embodiment;

FIG. 7 is a schematic cross-sectional view of the joint body according to the present embodiment;

fig. 8 is a schematic cross-sectional view of the seal ring of the present embodiment.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention will be combined below to clearly and completely describe the technical solution in the embodiments of the present invention.

Example (b):

as shown in fig. 1 to 8, the embodiment discloses a PVC double-layer co-extrusion sewage pipe, which includes a pipe body 1, the pipe body 1 includes a PVC inner pipe layer 11 and a PVC outer anti-pressure layer 12, the PVC outer anti-pressure layer 12 is spirally extended around the outer side wall of the PVC inner pipe layer 11 along the axial direction of the pipe body 1, the PVC inner pipe layer 11 and the PVC outer anti-pressure layer 12 are combined to form a double-layer co-extrusion structure of the sewage pipe, the inner side wall of the PVC inner pipe layer 11 is coated with an anti-corrosion layer 13, the PVC outer anti-pressure layer 12 is formed by spirally extending an outer cross-section unit 121, the outer cross-section unit 121 includes a trapezoidal protrusion 122 and connecting portions 123 located at two sides of the bottom of the trapezoidal protrusion 122, the connecting portions 123 are attached to the outer side wall of the PVC inner pipe layer 11, a buffer cavity 124 for anti-pressure buffering is provided inside the trapezoidal protrusion 122, a plurality of reinforcing ribs 125 for enhancing the structural strength of the outer side wall of the trapezoidal protrusion 122 are provided at the top of the trapezoidal protrusion 122, and anti-deformation grooves 126 are formed at intervals between the reinforcing ribs 125. The sewage pipe of this embodiment accomplishes the integrated into one piece of interior pipe layer 11 and the outer anti-pressure layer 12 of PVC through double-deck coextrusion technology, makes the connection compactness between them promote, and the major structure intensity of sewage pipe obtains guaranteeing, reduces the sewage pipe simultaneously greatly and makes the degree of difficulty, improves production efficiency, realizes mass production. And the PVC inner pipe layer 11 of body 1 adopts hollow cylindrical body 1 structure, and the PVC inner pipe layer 11 of being convenient for carries out anticorrosive coating 13 coating work, and the inside wall of anticorrosive coating 13 after the coating is smooth level and smooth, when having corrosion protection, can effectively reduce the interior residual pollutant of sewage, makes sewage smoothly flow. The PVC outer pressure-resistant layer 12 of the pipe body 1 is formed by spirally extending the outer section unit 121, the trapezoidal protrusion 122 structure of the outer section unit 121 enables the outer side of the sewage pipe to have better pressure-resistant performance, and the sewage pipe is prevented from being damaged and crushed by external pressure, because the sewage pipe is generally embedded underground, the outer side wall of the sewage pipe needs to bear the pressure of filling soil and a road surface, and when the sewage pipe passes through a motor vehicle road surface, the pressure required to be borne by the sewage pipe is larger, so the inner side wall of the sewage pipe generally requires to have corrosion-resistant performance, and the outer side wall of the sewage pipe needs to have certain pressure-resistant performance.

In a preferred embodiment, the buffer cavity 124 has an arc-shaped cavity structure, so that the outer layer cross-section unit 121 forms an arch bridge structure, and the overall structural strength of the outer layer cross-section unit 121 is improved, and the outer layer cross-section unit can resist external pressure to a certain extent and is not easily deformed.

As a preferred embodiment, the anti-corrosion layer 13 is formed by coating an epoxy resin composite coating, and has good anti-corrosion and anti-oxidation properties.

In order to further improve the compression resistance of the outer side wall of the sewage pipe and improve the structural strength of the sewage pipe, as a preferred embodiment, the outer side of the PVC outer compression layer 12 is provided with a steel frame layer 14, a spiral groove 127 is formed between adjacent trapezoidal protrusions 122 in the PVC outer compression layer 12, the steel frame layer 14 extends along the spiral groove 127, the steel frame layer 14 is located in the spiral groove 127, and the top of the steel frame layer 14 is flush with or slightly lower than the top of the PVC outer compression layer 12. Through setting up steel frame layer 14, make the outer wall structural strength of sewage pipe promote greatly, and steel frame layer 14 and PVC resistance to compression layer alternate connection make the steelframe become the winding regular, connect the compactness high, production and processing is convenient, need not to carry on again steel frame layer 14's location, direct winding can, the holistic structural strength of sewage pipe is even. The outer side wall of the pipe body 1 is wrapped with a layer of glass fiber layer 15, and the inner side wall of the glass fiber layer 15 is alternately connected with the top of the PVC outer compression layer 12 and the top of the steel frame layer 14. Because the top of the PVC outer anti-pressure layer 12 is provided with a plurality of anti-deformation grooves, when the glass fiber layer 15 is coated, the glass fiber layer 15 enters the anti-deformation grooves and can be firmly combined with the PVC outer anti-pressure layer 12. Similarly, the steel frame layer 14 is constructed by steel bars, and a plurality of hollow parts are distributed on the surface of the steel frame layer, so that the glass fibers can enter into and be firmly combined with the steel frame layer.

Further, in order to make the fit between the steel frame layer 14 and the PVC outer compression-resistant layer 12 more compact, the steel frame layer 14 is spirally formed by the trapezoidal section unit 141 matched with the spiral groove 127. The trapezoidal section unit 141 has a trapezoidal cavity 142 inside.

Furthermore, in order to prevent the phenomenon of freezing of water flow due to the low temperature inside the sewage pipe, the buffer cavity 124 and the trapezoidal cavity 142 may be filled with a thermal insulation material, preferably a foam plastic.

In a preferred embodiment, the two ends of the pipe body 1 are provided with connecting ends 16 for connecting the pipe joint 2 to connect the two pipe bodies 1, the connecting ends 16 are formed by sequentially laminating an anti-corrosion layer 13, a PVC inner pipe layer 11 and a connecting part 123 from inside to outside, the outer side wall of the connecting end 16 is provided with threads, and the pipe body 1 is connected with the pipe joint 2 through the threads.

As a preferred embodiment, the pipe joint 2 includes a joint body 21, the joint body 21 is a cylindrical pipe structure, two internal thread sections 22 for connecting the two connection ends 16 of the pipe body 1 respectively and a separation ring 23 are arranged inside the joint body 21, the separation ring 23 is located in the middle of the joint body 21, the separation ring 23 is located between the two internal thread sections 22, and sealing rings 24 for fitting and sealing the end surfaces of the connection ends 16 of the two pipe bodies 1 are arranged on two sides of the separation ring 23. When the two pipe bodies 1 are connected, the inner thread section 22 at one end of the pipe joint 2 is aligned with the connecting end 16 of one of the pipe bodies 1 and screwed tightly, so that the connecting end 16 of the pipe body 1 is tightly attached to the sealing ring 24 at the corresponding side of the separating ring 23, and the sealing connection between the pipe joint 2 and one of the pipe bodies 1 is completed; and then the connecting end 16 of the other pipe body 1 is aligned with the internal thread section 22 at the other end of the pipe joint 2 and screwed in, so that the connecting end 16 of the pipe body 1 is tightly attached to the sealing ring 24 at the other side of the separating ring 23, and the sealing connection between the pipe joint 2 and the other pipe body 1 can be completed.

As a preferred embodiment, in order to facilitate the installation and positioning of the sealing ring 24, the sealing ring 24 is a stepped ring structure, the separating ring 23 is connected to be provided with a ring groove 25 for the installation of the sealing ring 24 in the embedding and positioning manner, the sealing ring 24 comprises an embedding ring 241 structurally matched with the ring groove 25 and an outer attaching ring 242 with the same inner diameter as that of the separating ring 23, when the sealing ring 24 is installed, the sealing ring 24 can be installed in the positioning manner only by embedding the embedding ring 241 of the sealing ring 24 into the ring groove 25, and the sealing ring 24 can be prevented from dropping, dislocating and the like, so that the sealing performance of the connection of the pipe body 1 is ensured.

The above description is only the preferred embodiment of the present invention, and the technical solutions of the objects of the present invention are all within the protection scope of the present invention as long as the objects are achieved by the substantially same means.

Claims

PVC double-deck sewage pipe of crowded altogether, including body (1), its characterized in that: the pipe body (1) comprises a PVC inner pipe layer (11) and a PVC outer compression layer (12), the PVC outer compression layer (12) is arranged around the outer side wall of the PVC inner pipe layer (11) in a spiral extending mode along the axial direction of the pipe body (1), the PVC inner pipe layer (11) and the PVC outer compression layer (12) are combined to form a co-extrusion double-layer structure of a sewage pipe, the inner side wall of the PVC inner pipe layer (11) is coated with an anti-corrosion layer (13), the PVC outer compression layer (12) is formed by spirally extending an outer cross-section unit (121), the outer cross-section unit (121) comprises a trapezoid protrusion (122) and connecting portions (123) located on two sides of the bottom of the trapezoid protrusion (122), the connecting portions (123) are attached to the outer side wall of the PVC inner pipe layer (11), a buffer cavity (124) used for compression buffering is arranged inside the trapezoid protrusion (122), a plurality of reinforcing ribs (125) used for reinforcing the structural strength of the outer side wall of the trapezoid protrusion (122) are arranged at the top of the trapezoid protrusion (122), and deformation-resistant grooves (126) are formed among the reinforcing ribs (125) at intervals.
2. The PVC double-layer co-extruded sewer pipe of claim 1, which is characterized in that: the buffer cavity (124) is of an arc-shaped cavity structure.
3. The PVC double-layer co-extruded sewer pipe of claim 1, which is characterized in that: the anti-corrosion layer (13) is formed by coating an epoxy resin composite coating.
4. The PVC double-layer co-extrusion sewage pipe of claim 1, wherein: the outside of the outer anti-pressure layer of PVC (12) is equipped with steel frame layer (14), form spiral groove (127) between adjacent trapezoidal arch (122) in the outer anti-pressure layer of PVC (12), steel frame layer (14) extend the setting along spiral groove (127), steel frame layer (14) are located spiral groove (127), the lateral wall cladding of body (1) has one deck glass fiber layer (15), the inside wall of glass fiber layer (15) and the top of the outer anti-pressure layer of PVC (12), the top of steel frame layer (14) are connected in turn.
5. The PVC double-layer co-extrusion sewage pipe of claim 4, wherein: the top of the steel frame layer (14) is flush with the top of the PVC outer pressure-resistant layer (12) or lower than the top of the PVC outer pressure-resistant layer (12).
6. The PVC double-layer co-extruded sewer pipe of claim 5, which is characterized in that: the steel frame layer (14) is formed in a spiral mode through the trapezoid cross section units (141) matched with the spiral grooves (127).
7. The PVC double-layer co-extrusion sewage pipe of claim 6, wherein: the interior of the trapezoid cross section unit (141) is a trapezoid cavity (142).
8. The PVC double-layer co-extrusion sewage pipe of claim 7, wherein: the buffer cavity (124) and the trapezoid cavity (142) are filled with heat insulation materials.
9. The PVC double-layer co-extruded sewer pipe of claim 1, which is characterized in that: the connecting end (16) is arranged at each of two ends of each pipe body (1) and used for connecting the pipe joints (2) to connect the two pipe bodies (1), each connecting end (16) is formed by sequentially laminating an anti-corrosion layer (13), a PVC inner pipe layer (11) and a connecting part (123) from inside to outside, the outer side wall of each connecting end (16) is provided with threads, and the pipe bodies (1) are connected with the pipe joints (2) through the threads.
10. The PVC double-layer co-extrusion sewage pipe of claim 9, wherein: the pipe joint (2) comprises a joint body (21), the joint body (21) is of a cylindrical pipe structure, two internal thread sections (22) and a separating ring (23) which are respectively used for connecting ends (16) of two pipe bodies (1) are arranged inside the joint body (21), the separating ring (23) is located in the middle of the joint body (21), the separating ring (23) is located between the two internal thread sections (22), and sealing rings (24) which are used for being attached and sealed with the end faces of the connecting ends (16) of the two pipe bodies (1) are arranged on two sides of the separating ring (23).