Double union low flow resistance PVC connector

Abstract

The utility model provides a double-flexible low-flow resistance polyvinyl chloride connector, which relates to the technical field of pipeline connectors and comprises: a polyvinyl chloride pipe, wherein two ends of the polyvinyl chloride pipe are respectively rotatably connected with a flexible end head, an outer surface of the polyvinyl chloride pipe is tightly sleeved with a pipeline outer cylinder, and two elastic locking sleeves are movably sleeved on the polyvinyl chloride pipe, the two elastic locking sleeves are respectively slidably connected with a left port and a right port of the pipeline outer cylinder, and the outer ends of the two elastic locking sleeves are respectively fitted with the inner end surfaces of the two flexible ends. The pipeline connector in the application has a locking function for the flexible joint and will not affect the docking of the flexible joint with the end head of the connected pipe fitting, and is easy to assemble. It solves the problem that when a double-flexible connector is used, due to the presence of multiple flexible joints, there is a lack of limit and fixation between the two flexible joints, and a lack of limitation on the middle connecting pipe part. If it is subjected to an external force and causes free rotation, it is easy to cause the connector at the end of the joint to become loose and cause leakage.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connectors, in particular to a double-joint low-flow-resistance polyvinyl chloride connector. Background Art

[0002] Polyvinyl chloride is widely used in the laying of pipelines. It has a stable structure and a smooth surface, and can effectively reduce the resistance generated during the transportation of liquids. In the existing pipeline connection technology, welding, threaded connection or flange connection are usually used. However, these connection methods have many inconveniences during disassembly and maintenance, such as the need for professional tools, complex operation, and a long time. In order to facilitate the maintenance of pipelines and water-using equipment, pipe connectors with flexible joints can be used to splice pipelines and install water-using equipment. Double flexible joint connectors are connectors with two flexible joints. When such connectors are used, due to the presence of multiple flexible joints, there is a lack of limit and fixation between the two flexible joints, and the middle connecting pipe lacks limitation. If it is subjected to external force and causes it to rotate freely, it is easy to cause the connector at the end of the joint to loosen and cause leakage.

[0003] In the prior art, when double-joint connectors are used, due to the presence of multiple joints, there is a lack of limiting and fixing between the two joints, and the middle connecting pipe portion has no restrictions. If it is subjected to external force and causes it to rotate freely, it is easy to cause the connector at the end of the joint to loosen and cause leakage. Utility Model Content

[0004] The disclosed embodiments relate to a double-joint low-flow-resistance polyvinyl chloride connector, which solves the problem that when a double-joint connector is used, due to the presence of multiple joints, there is a lack of limiting and fixing between the two joints, and the middle connecting pipe portion lacks definition. If it is subjected to external force and causes free rotation, it is easy to cause the connector at the end of the joint to loosen and cause leakage.

[0005] In a first aspect of the present disclosure, a double-flexible low-flow-resistance polyvinyl chloride connector is provided, which specifically includes a polyvinyl chloride tube, wherein two ends of the polyvinyl chloride tube are rotatably connected with a flexible end head, a pipeline outer tube is tightly sleeved on the outer surface of the polyvinyl chloride tube, and two elastic locking sleeves are movably sleeved on the polyvinyl chloride tube, the two elastic locking sleeves are respectively slidably connected to the left port and the right port of the pipeline outer tube, and the outer ends of the two elastic locking sleeves are respectively fitted with the inner end surfaces of the two flexible end heads.

[0006] In at least some embodiments, the polyvinyl chloride tube is a tube body made of polyvinyl chloride material, and the outer edges of both ends of the polyvinyl chloride tube are processed by hot-melt bending outwards with a hot-melt gun to form butt-jointed folded edges.

[0007] In at least some embodiments, a guide end cavity is respectively opened at the left and right ends of the inner wall of the outer tube of the pipeline, and a strip-shaped anti-rotation slot is opened on the inner wall of the guide end cavity. An automatic locking spring is fixedly connected to the end surface of the guide end cavity, and the automatic locking spring is sleeved on the outside of the polyvinyl chloride tube.

[0008] In at least some embodiments, the elastic locking sleeve is a circular sleeve structure, and one end of the elastic locking sleeve close to the center of the polyvinyl chloride tube is slidably connected to the inside of the guide end cavity. The inner end of the outer surface of the elastic locking sleeve is provided with a locking sleeve convex pattern, and the locking sleeve convex pattern is slidably connected to the anti-rotation slot, and the inner end of the elastic locking sleeve is connected to the outer end of the automatic locking spring.

[0009] In at least some embodiments, a locking sleeve limiting ring with an annular structure is provided in the middle of the outer surface of the elastic locking sleeve, and an outer edge one-way locking tooth with a wedge-shaped tooth structure is provided around the outer edge of the elastic locking sleeve, and the tooth end of the outer edge one-way locking tooth faces counterclockwise.

[0010] In at least some embodiments, the outer edge of the inner sleeve of the flexible joint end is fixedly connected to an inner sleeve edge of the end, the inner sleeve edge of the end is rotatably sleeved on the polyvinyl chloride tube, and the inner edge of the inner sleeve edge of the end is provided with an inner sleeve edge groove of an annular structure.

[0011] In at least some embodiments, the inner groove surface of the inner groove of the sleeve edge is processed with an end one-way locking tooth, the tooth end of the end one-way locking tooth faces counterclockwise, and the end one-way locking tooth fits with the outer edge one-way locking tooth.

[0012] The utility model provides a double-joint low-flow-resistance polyvinyl chloride connector, which has the following beneficial effects:

[0013] Both ends of the double-joint pipe connector of the utility model are provided with joint ends, so that both ends of the connector can be connected to water pipes or water-using equipment respectively, thereby improving practicality. At the same time, an auxiliary positioning structure of the two pipe ends is provided. After the connector is connected to the water pipeline, the two rotating ends can be synchronously locked by the pipe joint locking mechanism of the connector, thereby preventing the rotation of the joint at the end of the connector pipe body, resulting in the end spiral loosening and causing leakage.

[0014] In addition, the locking mechanism in the connector is a one-way locking mechanism. When it cooperates with the two flexible joint ends, the inclined surface of the one-way locking teeth on the outer edge fits with the inclined surface of the one-way locking teeth on the end. When the flexible joint end is rotated counterclockwise to dock the connector with the end of the connected pipe, the inclined surface of the one-way locking teeth on the outer edge and the one-way locking teeth on the end produce a sliding connection, pushing the elastic locking sleeve toward the center of the polyvinyl chloride tube, which will not affect the counterclockwise rotation of the flexible joint end. When the docking of the flexible joint end with the end of the connected pipe is completed, the one-way locking teeth on the outer edge are tightly fitted with the one-way locking teeth on the end again under the action of the automatic locking spring, which can prevent the flexible joint end from rotating in the opposite direction and causing the joint spiral to loosen. It can be seen that the pipe connector in the present application will not affect the docking of the flexible joint with the end of the connected pipe while playing a locking function on the flexible joint. It is easy to assemble and has a stable connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0016] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0017] In the attached picture:

[0018] Figure 1 A schematic diagram showing the overall structure of the present application;

[0019] Figure 2 A schematic diagram showing the structure of the interior of the outer tube of the pipeline of the present application is shown;

[0020] Figure 3 It shows a schematic diagram of the structure of the present application in a fully cutaway state;

[0021] Figure 4 It shows a schematic diagram of the structure of the present application in a decomposed state;

[0022] Figure 5 It shows a schematic diagram of the structure of the present invention when the outer rain elastic locking sleeve of the pipeline is separated;

[0023] Figure 6 The schematic diagram of the structure of the flexible joint end of the present application is shown.

[0024] Reference numerals list

[0025] 1. PVC pipe; 101. Butt folded edge; 2. Outer tube of pipe; 201. Guide end cavity; 202. Anti-rotation slot; 203. Automatic locking spring; 3. Elastic locking sleeve; 301. Locking sleeve convex pattern; 302. Locking sleeve limiting ring; 303. Outer edge one-way locking teeth; 4. Flexible joint end; 401. End inner sleeve edge; 402. Sleeve inner groove; 403. End one-way locking teeth. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1: Please refer to Figures 1 to 6 :

[0028] The utility model proposes a double-flexible low-flow resistance polyvinyl chloride connector, comprising a polyvinyl chloride pipe 1, the polyvinyl chloride pipe 1 is a pipe body made of polyvinyl chloride material, the outer edges of both ends of the polyvinyl chloride pipe 1 are processed by hot-melt bending outwards with butt flanges 101 by a hot-melt gun, and the two ends of the polyvinyl chloride pipe 1 are rotatably connected with a flexible end 4, a pipe outer tube 2 is tightly sleeved on the outer surface of the polyvinyl chloride pipe 1, and two elastic locking sleeves 3 are movably sleeved on the polyvinyl chloride pipe 1, and the two elastic locking sleeves 3 are respectively slidably connected to the left port and the right port of the pipe outer tube 2, and the outer ends of the two elastic locking sleeves 3 are respectively fitted with the inner end surfaces of the two flexible end 4; the inside of each flexible end 4 is provided with an internal thread for connecting with the spiral end of the butted pipe fitting, and the pipe fitting and the connector are butted together by the butt flange 101 being tightly fitted with the spiral end of the butted pipe fitting.

[0029] In the disclosed embodiment, a guide end cavity 201 is respectively provided at the left and right ends of the inner wall of the pipe outer tube 2, and a strip-shaped anti-rotation slot 202 is provided on the inner wall of the guide end cavity 201. An automatic locking spring 203 is fixedly connected to the inner end surface of the guide end cavity 201, and the automatic locking spring 203 is sleeved on the outside of the polyvinyl chloride tube 1. The middle part of the inner wall of the pipe outer tube 2 is tightly fitted with the outer surface of the middle part of the polyvinyl chloride tube 1, so that the pipe outer tube 2 can be fixed on the outside of the polyvinyl chloride tube 1.

[0030] In the disclosed embodiment, the elastic locking sleeve 3 is a circular sleeve structure, and one end of the elastic locking sleeve 3 close to the center of the polyvinyl chloride tube 1 is slidably connected to the inside of the guide end cavity 201, and the inner end of the outer surface of the elastic locking sleeve 3 is provided with a locking sleeve convex pattern 301, and the locking sleeve convex pattern 301 is slidably connected to the anti-rotation slot 202, which plays a guiding role and fixes the circumferential direction of the elastic locking sleeve 3 at the same time. The inner end of the elastic locking sleeve 3 is connected to the outer end of the automatic locking spring 203; a locking sleeve limiting ring 302 with an annular structure is provided in the middle of the outer surface of the elastic locking sleeve 3, and the outer edge of the elastic locking sleeve 3 is surrounded by an outer edge one-way locking teeth with a wedge-shaped tooth structure. 303, the tooth end of the outer edge one-way locking tooth 303 faces counterclockwise; under normal conditions, the inner end of the elastic locking sleeve 3 is inserted into the anti-rotation slot 202, and the two elastic locking sleeves 3 are pushed outward by the action of the automatic locking spring 203, so that the outer edge of the elastic locking sleeve 3 is tightly fitted with the joint end 4, and has appropriate elasticity. When a certain thrust is applied to the elastic locking sleeve 3, the automatic locking spring 203 can be compressed, thereby pushing the elastic locking sleeve 3 toward the center of the polyvinyl chloride tube 1. At the same time, through the setting of the locking sleeve limit ring 302, the elastic locking sleeve 3 can be manually pushed to adjust the state of the connector.

[0031] Embodiment 2, on the basis of embodiment 1, the outer edge of the inner sleeve opening of the flexible end 4 is fixedly connected with an inner sleeve edge 401 of the end, and the inner sleeve edge 401 of the end is rotatably sleeved on the polyvinyl chloride tube 1, and the inner edge of the inner sleeve edge 401 of the end is provided with an inner sleeve edge groove 402 of an annular structure; the inner groove surface of the inner sleeve edge groove 402 is processed with an end one-way locking tooth 403, the tooth end of the end one-way locking tooth 403 faces counterclockwise, and the end one-way locking tooth 403 is fitted with the outer edge one-way locking tooth 303; under normal conditions, the inclined surface of the outer edge one-way locking tooth 303 is fitted with the inclined surface of the end one-way locking tooth 403, and when rotating counterclockwise. During the process of rotating the union end 4 to dock the connector with the end of the connected pipe, the inclined surface of the outer edge one-way locking teeth 303 and the end one-way locking teeth 403 are slidably connected, pushing the elastic locking sleeve 3 toward the center of the polyvinyl chloride tube 1, without affecting the counterclockwise rotation of the union end 4. When the union end 4 and the end of the connected pipe are docked, the outer edge one-way locking teeth 303 are tightly fitted with the end one-way locking teeth 403 again under the action of the automatic locking spring 203, which can prevent the union end 4 from rotating in the opposite direction and causing the joint spiral to loosen, thereby playing a one-way locking role for the union end 4.

[0032] The working principle of this embodiment is as follows: first, the spiral plug of the butted pipe is inserted into the inside of the live joint end 4, and the live joint end 4 is rotated to form a threaded connection between the live joint end 4 and the spiral plug, so that the spiral plug is tightly fitted with the outer end edge of the butt flange 101, and the live joint end 4 at the other end of the polyvinyl chloride pipe 1 is butted with the spiral plug of the other butt pipe in the same way. After the butt joint is completed, the spiral plugs of the two butt pipes are tightly limited by the action of the two live joint ends 4, so that the spiral plugs of the two butt pipes are respectively fitted with the two butt flanges 101, and the butt joint of the pipes can be completed. At the same time, the outer edge one-way locking teeth 303 are butted with the end one-way locking teeth 403, which can prevent the live joint end 4 from rotating in the opposite direction and causing the connecting piece to loosen. When disassembling the connecting piece, the locking sleeve limiting ring 302 is pushed toward the center of the polyvinyl chloride pipe 1 to separate the outer edge one-way locking teeth 303 from the end one-way locking teeth 403, and the live joint end 4 can be rotated to separate the live joint end 4 from the spiral plug of the butt pipe.

[0033] In this article, there are a few points to note:

[0034] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0035] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0036] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. Double union low flow resistance polyvinyl chloride connector, including: A polyvinyl chloride tube (1), wherein both ends of the polyvinyl chloride tube (1) are rotatably connected to a flexible end (4), characterized in that a pipeline outer tube (2) is tightly sleeved on the outer surface of the polyvinyl chloride tube (1), and two elastic locking sleeves (3) are movably sleeved on the polyvinyl chloride tube (1), and the two elastic locking sleeves (3) are respectively slidably connected to the left port and the right port of the pipeline outer tube (2), and the outer ends of the two elastic locking sleeves (3) are respectively fitted with the inner end surfaces of the two flexible end heads (4).

2. The double union low flow resistance polyvinyl chloride connector according to claim 1, characterized in that: The polyvinyl chloride tube (1) is a tube body made of polyvinyl chloride material, and the outer edges of both ends of the polyvinyl chloride tube (1) are processed by hot-melt bending outwards with a hot-melt gun to form butt-jointed folded edges (101).

3. The double union low flow resistance polyvinyl chloride connector according to claim 1, characterized in that: A guide end cavity (201) is respectively provided at the left and right ends of the inner wall of the pipeline outer tube (2); a strip-shaped anti-rotation slot (202) is provided on the inner wall of the guide end cavity (201); an automatic locking spring (203) is fixedly connected to the inner end surface of the guide end cavity (201); and the automatic locking spring (203) is sleeved outside the polyvinyl chloride tube (1).

4. The double union low flow resistance polyvinyl chloride connector according to claim 3, characterized in that: The elastic locking sleeve (3) is a circular sleeve structure. One end of the elastic locking sleeve (3) close to the center of the polyvinyl chloride tube (1) is slidably connected to the inside of the guide end cavity (201). The inner end of the outer surface of the elastic locking sleeve (3) is provided with a locking sleeve convex pattern (301). The locking sleeve convex pattern (301) is slidably connected to the anti-rotation slot (202). The inner end of the elastic locking sleeve (3) is connected to the outer end of the automatic locking spring (203).

5. The double union low flow resistance polyvinyl chloride connector according to claim 4, characterized in that: A locking sleeve limiting ring (302) with an annular structure is provided in the middle of the outer surface of the elastic locking sleeve (3), and an outer edge one-way locking tooth (303) with a wedge-shaped tooth structure is provided around the outer edge of the elastic locking sleeve (3), and the tooth end of the outer edge one-way locking tooth (303) faces counterclockwise.

6. The double union low flow resistance polyvinyl chloride connector according to claim 5, characterized in that: The outer edge of the inner sleeve opening of the flexible end (4) is fixedly connected to an inner sleeve edge (401) of the end, and the inner sleeve edge (401) of the end is rotatably sleeved on the polyvinyl chloride tube (1), and the inner edge of the inner sleeve edge (401) of the end is provided with an inner sleeve edge groove (402) of an annular structure.

7. The double union low flow resistance polyvinyl chloride connector according to claim 6, characterized in that: The inner groove surface of the sleeve edge inner groove (402) is processed with an end one-way locking tooth (403), the tooth end of the end one-way locking tooth (403) faces the counterclockwise direction, and the end one-way locking tooth (403) fits with the outer edge one-way locking tooth (303).

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