PVC plastic pipe

Abstract

The utility model relates to the technical field of plastic pipes, in particular to a polyvinyl chloride (PVC) plastic pipe which comprises pipe bodies which can be connected with each other, a fixing ring is arranged at one end of each pipe body, a connecting portion is arranged at the other end of each pipe body, and the connecting portions can be connected into the fixing rings in a threaded mode. A fixing cavity is formed in the fixing ring in the circumferential direction of the fixing ring, a plurality of telescopic plug pin pieces are evenly arranged in the fixing cavity in the circumferential direction of the fixing cavity, an annular groove is formed in the side wall of the connecting part, the plug pin pieces can stretch into the annular groove, and a driving piece used for synchronously driving the plug pin pieces to stretch out and draw back is further arranged in the fixing cavity. According to the plastic pipe provided by the invention, through the arrangement of the bolt piece and the annular groove, when the plastic pipes are mutually connected through the threads, the joints of the plastic pipes can be further fixed, so that the fixing effect between the plastic pipes is improved, and the practicability of the plastic pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic pipes, in particular to a PVC plastic pipe. Background Art

[0002] PVC plastic pipe is made of polyvinyl chloride resin, stabilizer, lubricant, etc., and then extruded by hot pressing. It is the earliest plastic pipe material developed and applied.

[0003] For example, a plastic tube with patent number CN206361274U includes an inner tube body and an outer tube body arranged coaxially, a gap is left between the inner tube body and the outer tube body, a plurality of connectors fixedly connected to the outer tube wall of the inner tube body and the inner tube wall of the outer tube body are arranged in the gap, each of the connectors extends from one end of the inner tube body to the other end of the inner tube body along the length direction of the inner tube body, a through groove extending along the length direction of the inner tube body is formed between two adjacent connectors, an entry hole penetrating the inner and outer tube walls of the inner tube body is provided on the inner tube wall at one end of the inner tube body, and an outlet hole penetrating the inner and outer tube walls of the inner tube body is provided on the inner tube wall at the other end of the inner tube body. Although the plastic tube adopts a shunt pressure reduction method to reduce the fluid pressure at one end of the plastic tube connected to the tube body, thereby ensuring the stability of the fluid flow at the connection between the inner tube and the pipeline, when the plastic tubes are connected to each other, a threaded connection method is usually adopted, so that the ends of the plastic tubes connected to each other rely only on threaded connection, lacking further connection and fixation, making the practicality of the plastic tube poor, so it needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a PVC plastic pipe to solve the problems raised in the above background technology.

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

[0006] A PVC plastic pipe comprises a pipe body which can be connected to each other, a fixing ring is arranged at one end of the pipe body, a connecting part is arranged at the other end of the pipe body, and the connecting part can be threadedly connected in the fixing ring; a fixing cavity is arranged in the fixing ring along its circumference, a plurality of retractable latch members are evenly arranged in the fixing cavity along its circumference, an annular groove is arranged on the side wall of the connecting part, the latch member can be inserted into the annular groove and arranged, and a driving member for synchronously driving the latch member to retract and retract is also arranged in the fixing cavity.

[0007] Furthermore, a ring block is provided in the fixed cavity, and a plurality of fixing grooves are provided on the ring block along its circumference, the fixing grooves are arranged radially along the ring block, and snap-in grooves are arranged radially along the ring block on the side walls opposite to the fixing grooves; the latch member includes sliders that are slidably snap-into the corresponding snap-in grooves on both sides, one end of the slider can extend out of the fixed cavity and be inserted into the annular groove, and the driving member is used to drive the slider to be telescopically arranged in the fixed cavity.

[0008] Furthermore, the driving member includes a wheel disc arranged in the fixed cavity, the wheel disc can be rotatably arranged, a plurality of inclined sliding grooves are arranged on the wheel disc corresponding to the slider, a sliding rod which can extend into the corresponding sliding groove is arranged on the side wall of the slider, and the positive and negative rotation of the wheel disc is used to drive the side wall of the sliding groove to squeeze the sliding rod, so as to realize the reciprocating movement of the slider in the fixed groove.

[0009] Furthermore, a driving groove is provided on the outer side surface of the fixing ring along its circumference, and a lever that can extend out of the driving groove is provided on the side wall of the wheel disc. The lever slides along the driving groove to drive the wheel disc to rotate.

[0010] Furthermore, a limit groove is provided on the outer side surface of the fixing ring, and the limit groove is coaxially arranged with the driving groove. Arc grooves are respectively provided at both ends of the limit groove. The shift rod is rotatably arranged on the outer side wall of the wheel disc. The outer end of the shift rod is connected to the limit cylinder through a connecting rod. The rotation of the shift rod drives the limit cylinder to rotate into the arc groove, which is used to limit the shift rod.

[0011] Furthermore, a limiting cavity is provided in the limiting cylinder, a limiting rod is provided in the limiting cavity, both ends of the limiting rod can be extended out of the limiting cylinder, and a limiting ring is provided in the limiting cylinder and is sleeved on the outside of the limiting rod;

[0012] A spring which is sleeved outside the limiting rod is also arranged in the limiting cylinder, and a fixing hole is arranged on the side of the wheel disc. The spring is used to drive the limiting ring to drive the limiting rod to extend into the fixing hole.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model, through the provision of the latch member and the annular groove, enables the connection of the plastic tubes to be further fixed when the plastic tubes are connected to each other through threads, thereby improving the fixing effect between the plastic tubes and thus improving the practicality of the plastic tubes.

[0015] 2. The utility model, through the provision of a driving member, can drive the extension and retraction of the latch member in the fixed cavity through the external driving member, so that the latch member can be extended into or out of the annular groove, which is convenient to operate and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a structural schematic diagram of a PVC plastic pipe.

[0017] Figure 2 It is a vertical cross-sectional schematic diagram of a PVC plastic pipe in the utility model.

[0018] Figure 3 It is a structural schematic diagram of the wheel disc and the ring block in the utility model.

[0019] Figure 4 It is a schematic diagram of the explosion structure of the wheel disc and the ring block in the utility model.

[0020] Figure 5 It is a partial structural schematic diagram of the shifting rod and the driving groove in the utility model.

[0021] Figure 6 It is a vertical cross-sectional schematic diagram of the fixing cylinder in the utility model.

[0022] The meanings of the numbers in the figure are as follows: 100, tube body; 110, connecting part; 111, annular groove; 120, fixing ring; 130, sliding block; 140, driving groove; 150, limiting groove; 160, shifting rod; 170, limiting cylinder; 180, limiting rod; 200, fixing cavity; 210, sliding rod; 211, sliding groove; 220, wheel disc; 230, ring block; 310, fixing groove; 320, clamping groove; 400, spring; 410, limiting ring. DETAILED DESCRIPTION

[0023] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only used to explain the utility model but not to limit it.

[0024] The following is combined with Figure 1-Figure 6 This embodiment is described in further detail.

[0025] See also Figure 1-Figure 4 A PVC plastic tube in this embodiment includes a tube body 100 that can be connected to each other, a fixing ring 120 is provided at one end of the tube body 100, and a connecting portion 110 is provided at the other end of the tube body 100, and the connecting portion 110 can be threadedly connected to the fixing ring 120; a fixing cavity 200 is provided along its circumference in the fixing ring 120, and a plurality of retractable latch members are evenly arranged along its circumference in the fixing cavity 200, an annular groove 111 is provided on the side wall of the connecting portion 110, and the latch member can be inserted into the annular groove 111, and a driving member for synchronously driving the latch member to retract is also provided in the fixing cavity 200.

[0026] In this embodiment, the outer side of the other end of the tube body 100 is concave to form a connecting portion 110, and the outer side wall of the connecting portion 110 is provided with an external thread. The fixing ring 120 is integrally formed at one end of the tube body 100, and the inner side of the fixing ring 120 is provided with an internal thread. The external thread of the connecting portion 110 is screwed into the internal thread of the fixing ring 120 to achieve the threaded connection between the PVC plastic pipes; wherein the tube body 100 and the fixing ring 120 are both made of PVC plastic;

[0027] In actual use of this embodiment, an annular groove 111 is provided on the outer side surface of the connecting portion 110 along its circumference. When the connecting portion 110 is threadedly connected to the fixing ring 120, the latch member can extend into the corresponding annular groove 111, thereby further fixing the connecting portion 110. When the threaded connection between the connecting portion 110 and the fixing ring 120 is not tight, the PVC plastic pipes are further connected to each other through the cooperation of the latch member and the annular groove 111, which can make the mutual connection between the PVC plastic pipes more stable, thereby improving the practicality of the PVC plastic pipes.

[0028] In actual use of this embodiment, the drive member is arranged so that the latch member can be extended and retracted radially in the fixed cavity 200, thereby enabling the latch member to extend into or out of the annular groove 111, which is simple and convenient to operate and easy to use.

[0029] See also Figure 1-Figure 4 In this embodiment, a ring block 230 is provided in the fixed cavity 200, and a plurality of fixing grooves 310 are provided on the ring block 230 along its circumference. The fixing grooves 310 are arranged radially along the ring block 230, and snap-in grooves 320 are arranged radially along the ring block 230 on the side walls opposite to the fixing grooves 310; the latch member includes sliders 130 slidably snap-into the corresponding snap-in grooves 320 on both sides, and one end of the slider 130 can extend out of the fixed cavity 200 and be inserted into the annular groove 111, and the driving member is used to drive the slider 130 to be telescopically arranged in the fixed cavity 200.

[0030] In this embodiment, a plurality of fixing grooves 310 are evenly distributed along the circumference of the fixing cavity 200. By setting the clamping grooves 320, the slider 130 can be stably slidably installed in the corresponding fixing grooves 310.

[0031] Among them, the opening of the fixed cavity 200 faces the end face of the fixed ring 120 away from the tube body 100, and a detachable blocking ring is arranged at the opening. The slider 130 is slidably installed in the corresponding fixed groove 310, and the ring block 230 is fixed to the side wall of the fixed cavity 200 by gluing, thereby realizing the installation of the ring block 230, the slider 130 and the driving member in the fixed ring 120; when this embodiment is actually used, the slider 130 is driven by the driving member to retract and retract in the fixed groove 310, so that one end of the slider 130 can extend into or out of the fixed ring 120, and is preferably arranged in coordination with the annular groove 111, so that the PVC plastic pipes can be further fixed when connected to each other, and its applicability is better.

[0032] See also Figure 2-Figure 4In this embodiment, the driving member includes a wheel disc 220 disposed in the fixed cavity 200. The wheel disc 220 can be rotatably arranged. A plurality of inclined slide grooves 211 are provided on the wheel disc 220 corresponding to the slider 130. A slide rod 210 that can slide into the corresponding slide groove 211 is provided on the side wall of the slider 130. The wheel disc 220 is used to drive the side wall of the slide groove 211 to squeeze the slide rod 210, so as to realize the reciprocating movement of the slider 130 in the fixed groove 310.

[0033] In this embodiment, a plurality of slide grooves 211 are evenly arranged along the circumference of the wheel disc 220, and one end of the slide groove 211 is close to the center of the wheel disc 220, and the other end of the slide groove 211 is close to the outer side of the wheel disc 220, and the slide groove 211 is in a curved arc shape;

[0034] In actual use of this embodiment, the side wall of the slide groove 211 can squeeze the slide rod 210 through the forward and reverse rotation of the wheel plate 220, so that the slider 130 can reciprocate in the fixed groove 310, and the extension and retraction of the slider 130 is preferably achieved;

[0035] The blocking ring is installed at the opening of the fixed cavity 200 , so as to realize the installation of the wheel disc 220 in the fixed cavity 200 .

[0036] See also Figure 1-Figure 5 In this embodiment, a driving groove 140 is provided on the outer surface of the fixing ring 120 along its circumference, and a lever 160 that can extend out of the driving groove 140 is provided on the side wall of the wheel 220. The lever 160 slides along the driving groove 140 to drive the wheel 220 to rotate.

[0037] In this embodiment, the driving groove 140 is arranged on the blocking ring, and the driving groove 140 is in a curved arc shape. Through the arrangement of the driving groove 140 and the lever 160, when the PVC plastic pipes are connected to each other, the wheel 220 can be driven to rotate by shifting the lever 160 on the outside of the fixing ring 120, thereby driving the latch part to retract and cooperate with the annular groove 111, thereby fixing the connecting part 110 and the fixing ring 120, and its applicability is better.

[0038] See also Figure 1-Figure 5 In this embodiment, a limiting groove 150 is provided on the outer surface of the fixing ring 120, and the limiting groove 150 is coaxially arranged with the driving groove 140. Arc grooves are respectively provided at the two ends of the limiting groove 150. The lever 160 is rotatably arranged on the outer wall of the wheel disc 220. The outer end of the lever 160 is connected to the limiting cylinder 170 through a connecting rod. The rotating lever 160 drives the limiting cylinder 170 to rotate into the arc groove, which is used to limit the lever 160.

[0039] In this embodiment, the limiting groove 150 and the arc groove are both arranged on the blocking ring, and one end of the arc groove is connected to the corresponding end of the limiting groove 150, and it is circumferentially extended along the lever 160. At this time, when the lever 160 slides to the two ends of the driving groove 140, the lever 160 rotates to drive the limiting cylinder 170 to rotate to the end of the arc groove, that is, to prevent the limiting cylinder 170 from sliding in the limiting groove 150, so that the lever 160 will not slide along the driving groove 140 under the restriction of the limiting cylinder 170, and then the lever 160 reaches a fixed state, even if the position of the slider 130 is fixed, it is convenient for it to be in an extended or retracted state;

[0040] The lever 160 is rotatably mounted on the wheel disc 220 via a bearing.

[0041] See also Figure 1-Figure 6 In this embodiment, a limiting cavity is provided in the limiting cylinder 170, and a limiting rod 180 is provided in the limiting cavity. Both ends of the limiting rod 180 can be extended out of the limiting cylinder 170, and a limiting ring 410 is provided in the limiting cylinder 170 and is sleeved on the outside of the limiting rod 180; a spring 400 is also provided in the limiting cylinder 170 and is sleeved on the outside of the limiting rod 180. A fixing hole is provided on the side of the wheel 220, and the spring 400 is used to drive the limiting ring 410 to drive the limiting rod 180 to extend into the corresponding fixing hole.

[0042] In actual use of this embodiment, the fixing hole is arranged corresponding to the other end of the arc groove, such as Figure 6 As shown, the upper end of the limiting cavity is open, and a detachable cover plate is provided at the opening, thereby realizing the installation of the spring 400, the limiting rod 180 and the limiting ring 410 in the limiting cylinder 170;

[0043] The upper end of the limiting rod 180 extends through the cover plate, so that the spring 400 drives the limiting ring 410 to drive the limiting rod 180 to move toward the direction close to the wheel disc 220, that is, the limiting ring 410 drives the limiting rod 180 to extend into the fixing hole, so that the limiting cylinder 170 reaches a fixed state. At this time, the lever 160 will not slide in the driving groove 140 due to an external force.

[0044] Among them, when it is necessary to move the lever 160 to drive the wheel 220 to rotate, it is only necessary to lift the upper end of the limit rod 180 so that the lower end of the limit rod 180 is separated from the fixing hole, and then move the limit cylinder 170 to make it slide from the arc groove to the limit groove 150, so that the limit cylinder 170 drives the lever 160 to slide along the driving groove 140, and the telescopic setting of the pin part in the fixed cavity 200 can be realized, and its applicability is better.

[0045] Working principle: When multiple PVC plastic pipes of this type need to be connected to each other, the connecting part 110 is threadedly connected to the corresponding fixing ring 120, the limiting rod 180 is pulled to disengage it from the fixing hole, and then the limiting cylinder 170 is moved to drive the lever 160 to slide along one end of the driving groove 140 to the other end, so that the latch member extends out of the fixing cavity 200 and is inserted into the annular groove 111, thereby further fixing the interconnected PVC plastic pipes and improving their fixing effect; after the fixation is completed, the lever 160 is rotated to make the limiting cylinder 170 turn into the arc groove, so that the limiting rod 180 automatically extends into the corresponding fixing hole.

[0046] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. A PVC plastic pipe, characterized in that: The invention comprises a tube body (100) which can be connected to each other, a fixing ring (120) being provided at one end of the tube body (100), and a connecting part (110) being provided at the other end of the tube body (100), and the connecting part (110) being threadedly connected to the fixing ring (120); a fixing cavity (200) being provided in the fixing ring (120) along its circumference, and a plurality of retractable latch members being evenly provided in the fixing cavity (200) along its circumference; an annular groove (111) being provided on the side wall of the connecting part (110), and the latch member being able to extend into the annular groove (111) and being arranged; and a driving member for synchronously driving the latch member to retract and retract is also provided in the fixing cavity (200).

2. A PVC plastic pipe according to claim 1, characterized in that: A ring block (230) is provided in the fixed cavity (200), a plurality of fixed grooves (310) are provided on the ring block (230) along its circumference, the fixed grooves (310) are arranged radially along the ring block (230), and a clamping groove (320) is provided radially along the ring block (230) on the side walls opposite to the fixed grooves (310); the latch member comprises a slider (130) with two sides slidably clamped in the corresponding clamping grooves (320), one end of the slider (130) can extend out of the fixed cavity (200) and be inserted into the annular groove (111), and the driving member is used to drive the slider (130) to be telescopically arranged in the fixed cavity (200).

3. A PVC plastic pipe according to claim 2, characterized in that: The driving member comprises a wheel disc (220) disposed in the fixed cavity (200), the wheel disc (220) being rotatably arranged, a plurality of inclined slide grooves (211) being disposed on the wheel disc (220) corresponding to the slider (130), a slide rod (210) being disposed on the side wall of the slider (130) and being capable of extending into the corresponding slide groove (211), and the wheel disc (220) being rotated forward and reversely to drive the side wall of the slide groove (211) to squeeze the slide rod (210), thereby realizing reciprocating movement of the slider (130) in the fixed groove (310).

4. A PVC plastic pipe according to claim 3, characterized in that: A driving groove (140) is provided on the outer surface of the fixing ring (120) along its circumference, and a lever (160) that can extend out of the driving groove (140) is provided on the side wall of the wheel disc (220). The lever (160) slides along the driving groove (140) to drive the wheel disc (220) to rotate.

5. A PVC plastic pipe according to claim 4, characterized in that: A limiting groove (150) is provided on the outer surface of the fixing ring (120), the limiting groove (150) is coaxially arranged with the driving groove (140), arc grooves are respectively provided at both ends of the limiting groove (150), a shifting rod (160) is rotatably arranged on the outer wall of the wheel disc (220), the outer end of the shifting rod (160) is connected to the limiting cylinder (170) via a connecting rod, and the rotating shifting rod (160) drives the limiting cylinder (170) to rotate into the arc groove, so as to limit the shifting rod (160).

6. A PVC plastic pipe according to claim 4, characterized in that: A limiting cavity is provided in the limiting cylinder (170), a limiting rod (180) is provided in the limiting cavity, both ends of the limiting rod (180) can be extended out of the limiting cylinder (170), and a limiting ring (410) is provided in the limiting cylinder (170) and is sleeved on the outside of the limiting rod (180); A spring (400) is also provided in the limiting cylinder (170) and is sleeved outside the limiting rod (180). A fixing hole is provided on the side of the wheel disc (220). The spring (400) is used to drive the limiting ring (410) to drive the limiting rod (180) to extend into the fixing hole.

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