Direct connection structure for PVC (polyvinyl chloride) plastic pipes

Abstract

The utility model provides a PVC plastic pipe direct connection structure which comprises a PVC elbow pipe head, the PVC elbow pipe head is a square elbow, the two ends of the PVC elbow pipe head are fixedly connected with inserting portions which are connected with the ends of a PVC plastic pipe in an inserted mode, the outer sides of the inserting portions are provided with hollow pipes which are concentrically arranged with the inserting portions, the two ends of each hollow pipe are fixedly connected with round covers, and the round covers are fixedly connected with the PVC elbow pipe head. An inner pipe used for being inserted into the inserting part is installed on the face, away from the hollow pipe, of the round cover, the outer diameter of the inner pipe is the same as the inner diameter of the inserting part, the hollow pipe is sleeved with a rotating ring, the rotating ring is attached to the round cover, and a positioning rod is installed on the annular side face of the rotating ring. And a positioning hole matched with the positioning rod is formed in one side, deviating from the positioning rod, of the annular side surface of the rotating ring. The PVC elbow pipe head storage device has the following beneficial effects that the PVC elbow pipe heads are stacked and stored, and the space occupied by the PVC elbow pipe heads is reduced.

Description

Technical Field

[0001] The utility model relates to a direct connection structure of PVC plastic pipes, belonging to the field of PVC plastic pipe fittings. Background Technique

[0002] The PVC elbow is a commonly used fitting for connecting two PVC plastic pipes. Among them, the right-angle PVC elbow is the most common direct connector of PVC plastic pipes. Affected by the shape of the PVC elbow, it is difficult to stack the PVC elbows neatly. During storage, the PVC elbows can only be stacked in a disorderly manner. The space for storing the PVC elbows stacked in a disorderly manner cannot be fully utilized, that is, the number of PVC elbows stored per unit space is small. Therefore, it is necessary to design a direct connection structure of PVC plastic pipes that can stack the PVC elbows neatly. Content of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a direct connection structure of PVC plastic pipes to solve the problems raised in the above background technique. The utility model realizes the stacking and storage of PVC elbows and reduces the space occupied by the storage of PVC elbows.

[0004] To achieve the above purpose, the utility model is realized through the following technical solutions: A direct connection structure of PVC plastic pipes includes a PVC elbow. The PVC elbow is a right-angle elbow. Plugging parts that are inserted into the ends of the PVC plastic pipes are fixedly connected to both ends of the PVC elbow. A hollow tube concentric with the plugging part is arranged outside the plugging part. Circular covers are fixedly connected to both ends of the hollow tube. Inner tubes for inserting into the plugging parts are installed on the surfaces of the circular covers facing away from the hollow tube. The outer diameter of the inner tube is the same as the inner diameter of the plugging part. A rotating ring is sleeved on the hollow tube. The rotating ring is in contact with the circular cover. Positioning rods are installed on the circumferential side of the rotating ring. Positioning holes matched with the positioning rods are opened on the side of the circumferential side of the rotating ring away from the positioning rods.

[0005] Furthermore, external threads are processed on the outer surface of one end of the positioning rod. Threaded holes are opened on the circumferential side of the rotating ring. The end of the positioning rod processed with external threads is threadedly connected in the threaded holes.

[0006] Furthermore, a rubber sleeve is pasted inside the rotating ring. The rubber sleeve wraps the hollow tube. The outer diameter of the hollow tube is the same as the inner diameter of the rubber sleeve.

[0007] Furthermore, the circular cover and the inner tube are of an integrally formed structure. The outer diameter of the circular cover is the same as the outer diameter of the inner tube.

[0008] Further, a rib ring is fixedly connected to one end of the insertion part away from the PVC elbow head. The rib ring and the insertion part are of an integrally formed structure, and the insertion part and the PVC elbow head are of an integrally formed structure.

[0009] Further, the positioning holes are arranged along the radial direction of the rotating ring, the positioning rods are arranged along the radial direction of the rotating ring, one end of the positioning hole away from the center of the rotating ring is in a flared shape, and the inner diameter of the end of the positioning hole close to the center of the rotating ring is the same as the outer diameter of the positioning rod.

[0010] Advantages of the present utility model:

[0011] 1. Take four PVC elbow heads to form a rectangular structure. Then, insert the structure formed by two inner tubes, two round covers and a hollow tube between the aligned insertion parts of two PVC elbow heads, so as to realize the insertion and assembly of the four PVC elbow heads. Insert the positioning rod on the rotating ring into the positioning hole on another rotating ring to realize the insertion of the upper and lower layers of rotating rings, that is, the neat stacking of the structure formed by the four PVC elbow heads in the upper layer and the structure formed by the four PVC elbow heads in the lower layer. By analogy, the neat stacking storage of PVC elbow heads is realized. Compared with the chaotic stacking of PVC elbow heads, the space occupied by the storage of PVC elbow heads is reduced, the number of PVC elbow heads stored in a unit space is increased, and the utilization rate of the storage space for PVC elbow heads is improved.

[0012] 2. Sleeve the rotating ring on the hollow tube, so as to facilitate the rotation of the rotating ring around the hollow tube. When the positioning rod in the uppermost or lowermost layer is not inserted into the corresponding positioning hole, rotate the rotating ring to move the positioning rod to the inner side of the space formed by the four PVC elbow heads, playing a role in protecting the positioning rod in the exposed state. Description of the drawings

[0013] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objects and advantages of the present utility model will become more obvious:

[0014] Figure 1 It is a schematic structural diagram of a direct connection structure of a PVC plastic pipe of the present utility model;

[0015] Figure 2 It is a schematic diagram of the use state of a direct connection structure of a PVC plastic pipe of the present utility model;

[0016] Figure 3 It is another perspective schematic diagram of the use state of a direct connection structure of a PVC plastic pipe of the present utility model;

[0017] Figure 4 It is an assembly schematic diagram of a positioning rod, a rotating ring, a round cover and an inner tube in a direct connection structure of a PVC plastic pipe of the present utility model;

[0018] Figure 5 The figure is an assembly schematic diagram of a hollow tube, a round cover and an inner tube in a direct connection structure of a PVC plastic tube according to the present utility model;

[0019] Figure 6 The figure is an assembly schematic diagram of a positioning rod and a swivel ring in a direct connection structure of a PVC plastic tube according to the present utility model;

[0020] Figure 7 The figure is an assembly schematic diagram of a rubber sleeve and a swivel ring in a direct connection structure of a PVC plastic tube according to the present utility model;

[0021] Figure 8 The figure is a three-dimensional view of a PVC elbow head in a direct connection structure of a PVC plastic tube according to the present utility model;

[0022] In the figure: 1 - PVC elbow head, 2 - insertion part, 3 - swivel ring, 4 - inner tube, 5 - positioning rod, 6 - positioning hole, 7 - round cover, 8 - hollow tube, 9 - threaded hole, 10 - rubber sleeve, 11 - rib ring. Specific embodiments

[0023] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 8 , the present utility model provides a technical solution: a direct connection structure of a PVC plastic tube, including a PVC elbow head 1, the PVC elbow head 1 is a right-angle elbow, both ends of the PVC elbow head 1 are fixedly connected with insertion parts 2 inserted into the ends of the PVC plastic tubes, the insertion parts 2 and the PVC elbow head 1 are integrally formed structures, one end of the insertion part 2 far from the PVC elbow head 1 is fixedly connected with a rib ring 11, the rib ring 11 and the insertion part 2 are integrally formed structures, and the design of the rib ring 11 improves the structural strength of the end of the insertion part 2.

[0025] Refer to Figures 1 - 8, a hollow tube 8 concentric with the insertion part 2 is arranged outside the insertion part 2. Circular covers 7 are fixedly connected to both ends of the hollow tube 8. The circular cover 7 and the inner tube 4 are of an integrally formed structure. The outer diameter of the circular cover 7 is the same as the outer diameter of the inner tube 4. The hollow tube 8 serves to connect the two circular covers 7. An inner tube 4 for insertion into the insertion part 2 is installed on the side of the circular cover 7 facing away from the hollow tube 8. The outer diameter of the inner tube 4 is the same as the inner diameter of the insertion part 2. A rotating ring 3 is sleeved on the hollow tube 8. The rotating ring 3 is in contact with the circular cover 7. Threaded holes 9 are formed on the circumferential side of the rotating ring 3. External threads are processed on the outer surface of one end of the positioning rod 5, so that the end of the positioning rod 5 with the processed external threads is threadedly connected into the threaded hole 9, realizing the assembly of the positioning rod 5 and the rotating ring 3. At this time, the positioning rod 5 is arranged along the radial direction of the rotating ring 3. A positioning hole 6 matching the positioning rod 5 is formed on the side of the circumferential side of the rotating ring 3 facing away from the positioning rod 5. The positioning hole 6 is arranged along the radial direction of the rotating ring 3. Take four PVC elbow heads 1 to form a rectangular structure with the PVC elbow heads 1, and then insert the structure formed by two inner tubes 4, two circular covers 7 and the hollow tube 8 between the aligned insertion parts 2 of the two PVC elbow heads 1, thereby realizing the insertion and assembly of the four PVC elbow heads 1. Insert the positioning rod 5 on the rotating ring 3 into the positioning hole 6 on another rotating ring 3, realizing the insertion of the upper and lower layers of rotating rings 3, that is, the neat stacking of the structures formed by the four PVC elbow heads 1 in the upper layer and the structures formed by the four PVC elbow heads 1 in the lower layer. By analogy, the neat stacking and storage of the PVC elbow heads 1 are realized. Compared with the chaotic stacking of the PVC elbow heads 1, the space occupied by the storage of the PVC elbow heads 1 is reduced, the number of PVC elbow heads 1 stored in the unit space is increased, and the utilization rate of the storage space for the PVC elbow heads 1 is improved. The end of the positioning hole 6 far from the center of the rotating ring 3 is in a flared shape. The inner diameter of the end of the positioning hole 6 close to the center of the rotating ring 3 is the same as the outer diameter of the positioning rod 5. The design of the flared opening facilitates the insertion of the positioning rod 5 into the positioning hole 6.

[0026] Refer to Figures 1 - 7 , a rubber sleeve 10 is pasted inside the rotating ring 3. The rubber sleeve 10 wraps around the hollow tube 8. The outer diameter of the hollow tube 8 is the same as the inner diameter of the rubber sleeve 10. The rubber sleeve 10 increases the friction coefficient between the rotating ring 3 and the hollow tube 8, facilitating the limitation of the relative position between the rotating ring 3 and the hollow tube 8 and preventing the rotating ring 3 from rotating around the hollow tube 8 randomly. The rotating ring 3 is sleeved on the hollow tube 8, thus facilitating the rotation of the rotating ring 3 around the hollow tube 8. When the positioning rod 5 in the uppermost or lowermost layer is not inserted into the corresponding positioning hole 6, rotate the rotating ring 3 to move the positioning rod 5 to the inner side of the space formed by the four PVC elbow heads 1, playing a role in protecting the positioning rod 5 in the exposed state.

[0027] Although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A direct connection structure for PVC plastic pipes, including a PVC elbow (1), characterized in that: The PVC elbow (1) is a right-angle elbow. Both ends of the PVC elbow (1) are fixedly connected with insertion parts (2) inserted into the ends of the PVC plastic pipes. An empty pipe (8) concentric with the insertion part (2) is arranged outside the insertion part (2). Circular covers (7) are fixedly connected to both ends of the empty pipe (8). An inner pipe (4) for inserting into the insertion part (2) is installed on the side of the circular cover (7) facing away from the empty pipe (8). The outer diameter of the inner pipe (4) is the same as the inner diameter of the insertion part (2). A rotating ring (3) is sleeved on the empty pipe (8). The rotating ring (3) is in contact with the circular cover (7). A positioning rod (5) is installed on the circumferential side of the rotating ring (3). A positioning hole (6) matching the positioning rod (5) is formed on the side of the circumferential side of the rotating ring (3) facing away from the positioning rod (5).

2. The direct connection structure of a PVC plastic pipe according to claim 1, characterized in that: External threads are processed on the outer surface of one end of the positioning rod (5). A threaded hole (9) is formed on the circumferential side of the rotating ring (3). The end of the positioning rod (5) processed with external threads is threadedly connected in the threaded hole (9).

3. A direct connection structure for PVC plastic pipes according to claim 1, characterized in that: A rubber sleeve (10) is pasted inside the rotating ring (3). The rubber sleeve (10) wraps around the empty pipe (8). The outer diameter of the empty pipe (8) is the same as the inner diameter of the rubber sleeve (10).

4. A direct connection structure for PVC plastic pipes according to claim 1, characterized in that: The circular cover (7) and the inner pipe (4) are of an integrally formed structure. The outer diameter of the circular cover (7) is the same as the outer diameter of the inner pipe (4).

5. A direct connection structure for PVC plastic pipes according to claim 1, characterized in that: A rib ring (11) is fixedly connected to the end of the insertion part (2) away from the PVC elbow (1). The rib ring (11) and the insertion part (2) are of an integrally formed structure. The insertion part (2) and the PVC elbow (1) are of an integrally formed structure.

6. The direct connection structure of a PVC plastic pipe according to claim 1, wherein: The positioning hole (6) is arranged along the radial direction of the rotating ring (3). The positioning rod (5) is arranged along the radial direction of the rotating ring (3). One end of the positioning hole (6) away from the center of the rotating ring (3) is in a flared shape. The inner diameter of the end of the positioning hole (6) close to the center of the rotating ring (3) is the same as the outer diameter of the positioning rod (5).

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