Connecting interface for high-pressure sealing of PVC (polyvinyl chloride) pipe fitting

Abstract

The utility model discloses a connecting interface for high-pressure sealing of a PVC (polyvinyl chloride) pipe fitting. A tensile groove is formed in the surface of the pipe fitting interface; a tensile component is arranged on the inner surface of the tensile groove, and barbs are arranged on the surface of the tensile component to hook the inner surface of the PVC pipe; a sealing structure is arranged on the left side of the tensile groove and plays a sealing role. The connection problem of the PVC pipe fitting in the high-pressure environment can be solved, the sealing effect is good, the anti-drawing force is achieved, and disengaging can be effectively prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe fittings, and in particular relates to a connection interface for high-pressure sealing of PVC pipe fittings. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] There are two common connection interfaces for the ports of PVC pipe fittings. One is the pipe fitting glued socket. PVC adhesive is applied to the pipe port and the inner side of the pipe fitting socket. The pipe fitting socket is inserted into the socket and the glue is cured to connect the pipe fittings. This method can only be used for smaller diameter pipe fittings and under low pressure. Too high pressure or too large diameter will cause large pulling force at both ends of the connector, resulting in leakage at the connection port. The other method is the pipe fitting rubber ring socket. This interface is mainly used in medium and large diameter pipe fittings. On the stop seal of the pipe fitting socket Put in an elastic rubber ring, then apply force to insert the pipe socket, and seal it by compressing the rubber ring. This type of connection is suitable for medium and large diameter pipes and fittings. This connection method is a flexible connection and does not resist thrust and pull-out forces. Under high pressure in the pipe, a very large pull-out force will be generated on the pipe fittings. Under such a large thrust, the pipe fittings are more likely to fall out, which requires casting thrust piers at the pipe fittings to prevent the pipe fittings from falling out. This not only increases the construction cost, but also limits the scope of application of this type of pipe fitting connection interface in some fields. In the case of high-pressure water transmission and the need to resist pull-out and thrust, conventional PVC pipe fittings cannot solve the above problems. Utility Model Content

[0004] In view of the above problems, the utility model provides a connection interface for high-pressure sealing of PVC pipe fittings, which can solve the connection problem of PVC pipe fittings under high-pressure environment, has good sealing effect, has anti-pulling force, and can effectively prevent slipping.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model proposes a connection interface for high-pressure sealing of PVC pipe fittings, comprising a pipe fitting interface, a tensile groove is arranged on the surface of the pipe fitting interface; a tensile component is arranged on the inner surface of the tensile groove, and barbs are arranged on the surface of the tensile component to hook the inner surface of the PVC pipe; a sealing structure is arranged on the left side of the tensile groove, and the sealing structure plays a sealing role.

[0007] Furthermore, a protrusion is arranged on the right end surface of the pipe interface, and a slope is arranged on the left end surface.

[0008] Furthermore, the tensile component comprises a cylinder, the surface of which is provided with metal barbs, and the metal barbs are arranged in multiple groups.

[0009] Furthermore, the tensile component and the tensile groove are integrally injection molded.

[0010] Furthermore, the tensile component is installed on the inner surface of the tensile groove after the tensile groove is injection molded.

[0011] Furthermore, the tensile component comprises a cylinder, the surface of which is provided with plastic barbs, and the plastic barbs are arranged in multiple groups; the tensile component and the tensile groove are integrally injection molded.

[0012] Furthermore, the sealing structure comprises a sealing groove and a sealing rubber ring; the sealing groove is arranged on the left side of the tensile groove; and the sealing rubber ring is sleeved on the sealing groove.

[0013] Furthermore, the sealing structure includes an adhesive sealing area; the adhesive sealing area is a planar structure, and adhesive is applied on the surface of the adhesive sealing area for sealing.

[0014] Furthermore, the diameter of the pipe opening on the left side of the connection interface is smaller than the diameter of the pipe opening of the PVC pipe fitting.

[0015] Furthermore, the diameter of the pipe opening on the right side of the connection interface is larger than the diameter of the pipe opening of the PVC pipe fitting.

[0016] Compared with the prior art, the advantages and positive effects of the present disclosure are:

[0017] 1. The utility model is provided with a tensile component, which is made of two materials: metal and plastic. The metal tensile component can be directly formed or injection molded before installation, and has strong applicability. The surface of the tensile component is provided with barbs, which are used to tightly hook the inner surface of the PVC pipe fitting, so that the pipe fitting connection interface has certain anti-pulling and anti-slip properties.

[0018] 2. The utility model is provided with a sealing structure, which can be in two forms: a sealing rubber ring and an adhesive seal. The high-pressure sealing of the connection joint is ensured by the two sealing methods of adhesive and rubber ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0020] Figure 1 (a) and (b) are the integrated metal component connection interfaces of the present invention;

[0021] Figure 2 (a) and (b) are the rear-mounted metal component connection interfaces of the present invention;

[0022] Figure 3(a) and (b) are plastic component connection interfaces of the utility model;

[0023] In the figure: 1. Pipe fitting interface; 2. Integrated metal tensile component; 3. Rear-mounted metal tensile component; 4. Plastic tensile component; 5. Sealing rubber ring; 6. Adhesive sealing area; 7. PVC pipe. DETAILED DESCRIPTION

[0024] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs.

[0025] The utility model is described in detail below in conjunction with the accompanying drawings. The embodiment discloses a connection interface for high-pressure sealing of PVC pipe fittings, including a pipe fitting interface 1, a tensile groove is arranged on the surface of the pipe fitting interface 1; a tensile component is arranged on the inner surface of the tensile groove, and barbs are arranged on the surface of the tensile component to hook the inner surface of the PVC pipe 7; a sealing structure is arranged on the left side of the tensile groove, and the sealing structure plays a sealing role.

[0026] The utility model is suitable for various types of pipe fittings, such as elbows, tees, pipe plugs, etc., which are all made of PVC mixed materials and injection molded, and have excellent anti-corrosion performance. The tensile component is divided into an integrated metal tensile component 2, a rear-mounted metal tensile component 3, and a plastic tensile component 4.

[0027] The tensile component comprises a cylinder, and the surface of the cylinder is provided with metal barbs, and the metal barbs are provided in multiple groups. The tensile component and the tensile groove are integrally injection molded. The tensile component is installed on the inner surface of the tensile groove after the tensile groove is injection molded. The tensile component comprises a cylinder, and the surface of the cylinder is provided with plastic barbs, and the plastic barbs are provided in multiple groups; the tensile component and the tensile groove are integrally injection molded.

[0028] The tensile components of the utility model are divided into metal materials and plastic materials. There are two ways to combine metal components with various pipe fittings, such as Figure 1 As shown in (a) and (b), the tensile component is cylindrical, and the cylindrical component is integrally injection-molded with the connection interface. The tensile component is embedded in the inner wall of the PVC pipe fitting and is tightly combined to prevent the component from being separated from the pipe fitting itself; Figure 2 As shown in (a) and (b) in the figure, the cylindrical component is inserted into the tensile groove of the injection-molded connecting pipe to fix the component. Figure 3As shown in (a) and (b), the plastic component is directly molded as a whole when the pipe is injected because the material is the same as that of the pipe. There are multiple groups of barbs on the outer surface of the component. After the pipe socket is inserted into the pipe, the barbs tightly hook the pipe to prevent the pipe from falling out. Even if a pulling force is applied to the pipe from the outside, the pipe can still be ensured not to fall out.

[0029] The sealing structure includes a sealing groove and a sealing rubber ring 5; the sealing groove is arranged on the left side of the tensile groove; the sealing rubber ring 5 is sleeved on the sealing groove. The sealing structure includes an adhesive sealing area 6; the adhesive sealing area is a planar structure, and adhesive is applied on the surface of the adhesive sealing area for sealing.

[0030] The sealing area of ​​the pipe connection interface is divided into two sealing methods, such as Figure 1 (a) Figure 2 (a) Figure 3 As shown in (a), the first method is to seal with a sealing rubber ring 5, which is a post-installed rubber ring. After various pipe fittings are injection molded, the rubber ring is inserted into the pipe fitting sealing groove. After various pipe fitting sockets are inserted into the pipe, the pipe fitting and the pipe compress the rubber ring to ensure the high-pressure sealing effect of the pipe fitting;

[0031] like Figure 1 (b) Figure 2 (b) Figure 3 As shown in (b), another method is to seal by gluing. Glue is applied to the gluing area of ​​the pipe fitting connection interface, the interface socket is inserted into the pipe, the glue is cured, and the gluing sealing area is bonded to the inner wall of the pipe. When the anti-slip assembly plays a fixing role, the connection interface between the pipe and the pipe fitting will not be offset, and the gluing area can ensure the sealing effect of the connection. The structural pipe fitting is easy to construct. You only need to align the pipe fitting with the inside of the pipe and push it hard to the bottom of the pipe fitting to complete the installation of the pipe fitting.

[0032] The right end surface of the pipe fitting interface 1 is provided with a protrusion, and the left end surface is provided with an inclined surface. The diameter of the pipe opening on the left side of the connection interface is smaller than the diameter of the pipe opening of the PVC pipe fitting. The diameter of the pipe opening on the right side of the connection interface is larger than the diameter of the pipe opening of the PVC pipe fitting. The smaller diameter on the left side allows the connection interface to be pushed into the interior of the PVC pipe fitting 7 when in use, and the inclined surface can be provided for better pushing. The right side is provided with a protrusion, and the diameter is larger, so that the connection interface can stop after being pushed to the specified position, which plays a role of limiting.

[0033] Directions:

[0034] Align the pipe fitting interface 1 with the inside of the PVC pipe 7, push it into the inside of the PVC pipe 7 with force, and push it to the bottom of the pipe fitting interface 1 to complete the installation; at this time, the tensile component tightly hooks the inner wall of the PVC pipe 7 to prevent the pipe fitting connection interface from slipping out; the pipe fitting connection interface sealed with a rubber ring and the PVC pipe 7 compress the sealing rubber ring 5 at the same time, and the adhesive sealing area on the pipe fitting connection interface sealed with adhesive is bonded and sealed with the inner wall of the PVC pipe 7. Both sealing methods can ensure the high-pressure sealing effect of the pipe fitting connection interface.

[0035] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A connection interface for high-pressure sealing of PVC pipe fittings, It is characterized in that It includes a pipe fitting interface, a tensile groove is arranged on the surface of the pipe fitting interface; a tensile component is arranged on the inner surface of the tensile groove, and barbs are arranged on the surface of the tensile component to hook the inner surface of the PVC pipe; a sealing structure is arranged on the left side of the tensile groove, and the sealing structure plays a sealing role.

2. A connection interface for high pressure sealing of PVC pipe fittings as claimed in claim 1, It is characterized in that The right end surface of the pipe interface is provided with a protrusion, and the left end surface is provided with a slope.

3. A connection interface for high pressure sealing of PVC pipe fittings as claimed in claim 1, It is characterized in that The tensile component comprises a cylinder, the surface of which is provided with metal barbs, and the metal barbs are arranged in multiple groups.

4. A connection interface for high pressure sealing of PVC pipe fittings as claimed in claim 3, It is characterized in that The tensile component and the tensile groove are integrally injection molded.

5. A connection interface for high pressure sealing of PVC pipe fittings as claimed in claim 3, It is characterized in that The tensile component is installed on the inner surface of the tensile groove after the tensile groove is injection molded.

6. A connection interface for high pressure sealing of PVC pipe fittings as claimed in claim 1, It is characterized in that The tensile component comprises a cylinder, the surface of which is provided with plastic barbs, and the plastic barbs are arranged in multiple groups; the tensile component and the tensile groove are integrally injection molded.

7. A connection interface for high pressure sealing of PVC pipe fittings as claimed in claim 1, It is characterized in that The sealing structure comprises a sealing groove and a sealing rubber ring; the sealing groove is arranged on the left side of the tensile groove; and the sealing rubber ring is sleeved on the sealing groove.

8. A connection interface for high pressure sealing of PVC pipe fittings as claimed in claim 1, It is characterized in that The sealing structure comprises an adhesive sealing area; the adhesive sealing area is a planar structure, and adhesive is applied on the surface of the adhesive sealing area for sealing.

9. A connection interface for high pressure sealing of PVC pipe fittings as claimed in claim 1, It is characterized in that The diameter of the pipe opening on the left side of the connection interface is smaller than the diameter of the pipe opening of the PVC pipe fitting.

10. A connection interface for high pressure sealing of PVC pipe fittings as claimed in claim 1, It is characterized in that The diameter of the pipe opening on the right side of the connection interface is larger than the diameter of the pipe opening of the PVC pipe fitting.

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