Plastic socket type groove straight joint

Abstract

The utility model discloses a plastic socket type groove straight-through joint, relates to the technical field of fire-fighting pipelines, and aims to solve the problems that the socket type groove straight-through joint which is connected by adopting a hoop in the prior art is not good enough in sealing effect at the joint of the hoop and not high enough in use safety. A connecting metal piece is connected to the lower portion of the straight-through pipe and comprises a protruding pipe, an embedded groove and a connecting pipe head, the protruding pipe and the connecting pipe head are both arranged to be of an integrated structure with the embedded groove, the connecting metal piece is connected with the galvanized steel pipe through a hoop, and when the end of the galvanized steel pipe is connected and attached to the end of the connecting pipe head, the connecting pipe head is connected with the galvanized steel pipe through a hoop. The interior of the clamping hoop is clamped into the embedded groove, a sealing waterproof groove is formed in the connecting pipe head, a sealing rubber ring is arranged on the inner side of the sealing waterproof groove, a protective skirt is arranged on the outer side of the straight-through pipe, and a sealing rubber ring is arranged in the clamping hoop.

Description

Technical Field

[0001] This utility model relates to the field of fire protection pipeline technology, specifically a plastic socket-type grooved straight connector. Background Technology

[0002] Currently, most automatic fire sprinkler systems use galvanized steel pipes for piping. However, galvanized steel pipes are prone to corrosion, leading to galvanized layer peeling and rusting. Installation is also time-consuming and labor-intensive. Due to the excellent corrosion resistance of plastic pipes and their significantly improved flame-retardant properties, their introduction into automatic fire sprinkler systems is becoming a trend. Plastic fire sprinkler pipes are gradually replacing traditional galvanized steel pipes, upgrading the installation and usability of urban fire pipelines and improving fire-fighting capabilities. Therefore, a hybrid design using galvanized steel pipes as the main metal pipes and plastic pipes as branch pipes is beginning to be adopted in automatic fire sprinkler systems, laying the foundation for the fundamental replacement of galvanized steel pipes by plastic fire sprinkler pipes.

[0003] For example, application announcement number CN218543573U discloses a socket-type grooved reducing connector, which includes a plastic socket-type connecting pipe and a metal grooved pipe. This utility model adopts a method of coaxially setting a stepped cylindrical metal grooved pipe and a stepped cylindrical plastic socket-type connecting pipe, and molding them into one piece by injection molding. A groove is set on the outer wall of the large end pipe hole of the metal pipe, and a small end pipe hole of the plastic pipe is set on the plastic socket-type connecting pipe.

[0004] The above application is a patent filed by our company on September 21, 2022. The above application uses clamps to directly connect to the metal main pipe through grooves and uses plastic small end pipe holes to connect to plastic branch pipes. It has the characteristics of low material cost, light labor intensity, material saving, space saving, easy installation and good sealing performance. However, the clamps are used for connection. However, the sealing effect at the connection of the clamps is not good enough and the safety of use is not high enough. Therefore, the market urgently needs to develop a plastic socket grooved straight-through connector to help people solve the existing problems. Utility Model Content

[0005] The purpose of this utility model is to provide a plastic socket-type grooved straight connector to solve the problem mentioned in the background art that the current socket-type grooved straight connectors using clamp connections have insufficient sealing effect and low safety in use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a plastic socket-type grooved straight connector, comprising a straight pipe and a clamp, wherein a connecting metal part is connected to the lower part of the straight pipe, the connecting metal part comprising a convex pipe, an embedded groove, and a connecting pipe head, wherein the convex pipe and the connecting pipe head are integrally formed with the embedded groove, the connecting metal part is connected to a galvanized steel pipe by a clamp, and when the end of the galvanized steel pipe is connected and fitted with the end of the connecting pipe head, the inside of the clamp is engaged with the embedded groove, the connecting pipe head is provided with a sealing waterproof groove, a sealing rubber ring is provided on the inner side of the sealing waterproof groove, a protective skirt is provided on the outer side of the straight pipe, and a sealing rubber ring is provided inside the clamp.

[0007] The above technical solution involves setting a sealing and waterproof groove on the connecting pipe end and fitting a sealing rubber ring inside the sealing and waterproof groove. When connecting with a clamp, the end edge of the clamp is inserted into the groove, and a sealing rubber ring is also set inside the clamp. Through these two sets of sealing structures, the sealing and waterproof performance between the clamp and the connecting metal parts can be greatly improved, thereby improving the sealing effect, preventing water leakage, and enhancing the safety of use.

[0008] In a preferred embodiment, the present invention can be further configured such that: an inner protective tube is provided inside the straight pipe, and the connecting metal part is embedded between the straight pipe and the inner protective tube.

[0009] In a preferred embodiment, the present invention can be further configured such that the inner diameter of the inner protective tube is smaller than the inner diameter of the straight tube.

[0010] In a preferred embodiment, the present invention can be further configured as follows: the first reinforcing groove, the first waterproof groove, the second reinforcing groove, and the second waterproof groove are disposed inside the straight pipe.

[0011] Through the above technical solution, by setting the first reinforcing groove, the first waterproof groove, the second reinforcing groove, and the second waterproof groove, on the one hand, the setting of the two reinforcing grooves can make the injection molding connection between the straight pipe and the connecting metal parts more secure, and on the other hand, the setting of the two waterproof grooves can prevent water leakage from the pipeline when water flows, thus improving the reliability of use.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model sets a sealing and waterproof groove on the connecting pipe end, and puts a sealing rubber ring inside the sealing and waterproof groove. When connecting with a clamp, the end edge of the clamp is inserted into the groove, and a sealing rubber ring is also set inside the clamp. Through the two sets of sealing structures, the sealing and waterproof performance between the clamp and the connecting metal parts can be greatly improved, thereby improving the sealing effect, preventing water leakage, and improving the safety of use.

[0014] 2. This utility model, through the setting of the first reinforcing groove, the first waterproof groove, the second reinforcing groove and the second waterproof groove, on the one hand, the setting of the two reinforcing grooves can make the straight pipe and the connecting metal parts more secure when injection molded, and on the other hand, the setting of the two waterproof grooves can prevent water leakage when the pipe is flowing, thus improving the reliability of use. Attached Figure Description

[0015] Figure 1 This is an overall schematic diagram of a plastic socket-type grooved straight connector according to the present invention;

[0016] Figure 2 This is a cross-sectional view of a plastic socket-type grooved straight connector according to the present invention.

[0017] In the diagram: 1. Straight pipe; 2. Connecting metal parts; 3. Protective skirt; 4. Protruding pipe; 5. Embedded groove; 6. Connecting pipe head; 7. Inner protective pipe; 8. First reinforcing groove; 9. First waterproof groove; 10. Second reinforcing groove; 11. Second waterproof groove; 12. Clamp; 13. Sealing waterproof groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] Please see Figure 1 and Figure 2This utility model provides an embodiment of a plastic socket-type grooved straight connector, including a straight pipe 1 and a clamp 12. A connecting metal part 2 is connected to the lower part of the straight pipe 1. The connecting metal part 2 includes a protruding pipe 4, an embedded groove 5, and a connecting pipe head 6. The protruding pipe 4 and the connecting pipe head 6 are both integrated with the embedded groove 5. The connecting metal part 2 is connected to the galvanized steel pipe through the clamp 12. When the end of the galvanized steel pipe is connected and fitted with the end of the connecting pipe head 6, the inside of the clamp 12 is engaged with the embedded groove 5. A sealing waterproof groove 13 is provided on the connecting pipe head 6, and a sealing rubber ring is provided on the inner side of the sealing waterproof groove 13.

[0022] Please see Figure 1 and Figure 2 A protective skirt 3 is provided on the outside of the straight pipe 1, and a sealing rubber ring is provided inside the clamp 12.

[0023] Please see Figure 1 and Figure 2 An inner protective tube 7 is provided inside the straight pipe 1, and a connecting metal part 2 is embedded between the straight pipe 1 and the inner protective tube 7.

[0024] Please see Figure 1 and Figure 2 The inner diameter of the inner protective tube 7 is smaller than the inner diameter of the straight tube 1. The straight tube 1 and the connecting metal part 2 are connected by injection molding.

[0025] Working principle: In use, the straight pipe 1 and the connecting metal part 2 are connected by injection molding. The end of the connecting pipe head 6 of the fire pipe and the connecting metal part 2 are attached. Then, the clamp 2 is used to fix it on the outside of the fire pipe and the connecting metal part 2. The inner rubber ring of the clamp 2 is embedded in the groove 5, and the inner wall of the clamp 2 is squeezed and attached to the sealing and waterproof groove 13, thereby achieving the dual effect of sealing and fixing, realizing the connection between the fire water pipe and the straight pipe 1. When disassembling, only the clamp 2 needs to be removed. It is convenient and efficient to use.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A plastic socket-type grooved straight connector, comprising a straight pipe (1) and a clamp (12), characterized in that: A connecting metal part (2) is connected to the bottom of the straight pipe (1). The connecting metal part (2) includes a convex pipe (4), an embedded groove (5), and a connecting pipe head (6). The convex pipe (4) and the connecting pipe head (6) are integrated with the embedded groove (5). The connecting metal part (2) is connected to the galvanized steel pipe by a clamp (12). When the end of the galvanized steel pipe is connected and fitted with the end of the connecting pipe head (6), the inside of the clamp (12) is inserted into the embedded groove (5). A sealing waterproof groove (13) is provided on the connecting pipe head (6), and a sealing rubber ring is provided on the inner side of the sealing waterproof groove (13).

2. The plastic socket-type grooved straight connector according to claim 1, characterized in that: The straight pipe (1) is provided with a protective skirt (3) on the outside, and a sealing rubber ring is provided inside the clamp (12).

3. A plastic socket-type grooved straight connector according to claim 1, characterized in that: The straight pipe (1) is provided with an inner protective pipe (7), and the connecting metal part (2) is embedded between the straight pipe (1) and the inner protective pipe (7).

4. A plastic socket-type grooved straight connector according to claim 3, characterized in that: The inner diameter of the inner protective tube (7) is smaller than the inner diameter of the straight tube (1).

5. A plastic socket-type grooved straight connector according to claim 1, characterized in that: The first reinforcing groove (8), the first waterproof groove (9), the second reinforcing groove (10), and the second waterproof groove (11) are arranged inside the straight pipe (1).

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