Four-way structure for HDPE pipeline connection

Abstract

The utility model belongs to the technical field of pipeline connectors, and particularly discloses a four-way structure for HDPE (high-density polyethylene) pipeline connection, which comprises a four-way main body, a sealing cover and a filter screen, a cavity is arranged in the middle of the four-way main body, an opening is arranged at one end of the four-way main body, a sealing groove is arranged on the outer side of the opening and is of an annular structure, a locking outer ring is arranged on the outer side of the sealing groove, and the filter screen is arranged on the sealing groove. The sealing cover is arranged on the inner side of the locking outer ring, an inner thread is arranged on the inner side wall of the locking outer ring, a locking inner ring is arranged on the outer side of the sealing cover, an outer thread matched with the inner thread is arranged on the outer side wall of the locking inner ring, the filter screen is arranged on the sealing cover, and the filter screen is inserted into a cavity of the four-way body. A sealing ring matched with the sealing groove is arranged at the position, on the outer side of the filter screen, of the sealing cover, the sealing ring is inserted into the sealing groove, the filter screen is inserted into the cavity of the four-way body, so that the filtering effect is achieved, and the filter screen can be detached from the four-way body by rotating the sealing cover.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connectors, in particular to a four-way structure for connecting HDPE pipelines. Background Art

[0002] HDPE pipe is a replacement product for traditional steel pipes and polyvinyl chloride drinking water pipes. HDPE pipes must withstand a certain amount of pressure, and usually use PE resins with large molecular weight and good mechanical properties, such as HDPE resin. LDPE resin has low tensile strength, poor pressure resistance, poor rigidity, poor dimensional stability during molding, and is difficult to connect, so it is not suitable as a material for water supply pressure pipes.

[0003] Most of the existing HDPE pipe connection cross structures are simple in structure and can only play a connecting role, but not a filtering role. Therefore, some people usually install a filter at the connection between the pipe and the cross to play a filtering role. However, after a certain period of use, in order to avoid clogging of the cross, the filter usually needs to be removed and maintained regularly. If the filter of this structure needs to be maintained, the connection between the pipe and the cross needs to be disassembled before the internal filter can be maintained, which is very cumbersome. Therefore, this application proposes a HDPE pipe connection cross structure, which can not only play a filtering role, but also facilitates later disassembly and maintenance. Utility Model Content

[0004] The utility model aims to provide a four-way structure for connecting HDPE pipes to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a four-way structure for connecting HDPE pipes, comprising a four-way main body, a sealing cover and a filter screen, wherein a cavity is provided in the middle of the four-way main body, an opening is provided at one end of the four-way main body, a sealing groove is provided on the outside of the opening, the sealing groove is an annular structure, a locking outer ring is provided on the outside of the sealing groove, the locking outer ring and the four-way main body are integrally formed, the sealing cover is provided on the inner side of the locking outer ring, an internal thread is provided on the inner side wall of the locking outer ring, a locking inner ring is provided on the outside of the sealing cover, the locking inner ring and the sealing cover are formed at one time, an external thread matching the internal thread is provided on the outer side wall of the locking inner ring, the locking inner ring and the locking outer ring are threadedly connected by external threads and internal threads, the filter screen is provided on the sealing cover, the filter screen is inserted in the cavity of the four-way main body, a sealing ring matching the sealing groove is provided on the sealing cover on the outside of the filter screen, and the sealing ring is inserted in the sealing groove.

[0006] By arranging a filter screen to be inserted into the cavity of the four-way body, a filtering effect is achieved, and by arranging a locking inner ring to be threadedly connected to the locking outer ring, the sealing cover can be rotated to unscrew the locking inner ring from the locking outer ring (rotate the locking inner ring clockwise to screw it out, and rotate the locking inner ring counterclockwise to screw it in), and the filter screen can be removed from the four-way body.

[0007] Preferably, the filter screen is in contact with the inner wall of the four-way body.

[0008] Preferably, an auxiliary block is provided on the inner side of the locking inner ring, and the provided auxiliary block can facilitate the rotation of the sealing cover.

[0009] Preferably, a sealing rubber pad is provided inside the sealing groove to improve the sealing effect.

[0010] Preferably, a plurality of connecting pipes are provided on the outer side wall of the four-way body for connecting HDPE pipes.

[0011] Preferably, a connecting block is provided on one side of the cross body away from the locking outer ring, and the connecting block can be used to fix the cross body on other objects.

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

[0013] The utility model discloses the utility model discloses the filter screen is inserted into the four-way main body by arranging the filter screen, can achieve the filtering effect through the filter screen, and by arranging the locking inner ring and the locking outer ring threaded connection on the sealing cover, the locking inner ring can be rotated, and the locking inner ring can be screwed out of or screwed in the locking outer ring, so as to facilitate the later disassembly and assembly of the filter screen, facilitate the later maintenance, and improve the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the separation structure of the filter screen and the four-way main body of the utility model;

[0016] Figure 3 This is a schematic diagram of the main structure of the four-way structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the sealing cover structure of the utility model.

[0018] In the figure: 1. four-way body; 101. locking outer ring; 102. sealing groove; 103. internal thread; 2. connecting pipe; 3. connecting block; 4. sealing cover; 401. locking inner ring; 402. auxiliary block; 403. external thread; 404. sealing ring; 5. filter screen. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0020] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1-4 The utility model provides a technical solution: a four-way structure for connecting HDPE pipes, comprising a four-way body 1, a sealing cover 4 and a filter screen 5, wherein a cavity is provided in the middle of the four-way body 1, an opening is provided at one end of the four-way body 1, a sealing groove 102 is provided on the outside of the opening, the sealing groove 102 is an annular structure, a locking outer ring 101 is provided on the outside of the sealing groove 102, the locking outer ring 101 is integrally formed with the four-way body 1, the sealing cover 4 is provided on the inner side of the locking outer ring 101, and an inner thread 103 is provided on the inner side wall of the locking outer ring 101, A locking inner ring 401 is arranged on the outside of the sealing cover 4. The locking inner ring 401 and the sealing cover 4 are formed at one time. An outer wall of the locking inner ring 401 is provided with an outer thread 403 that cooperates with the inner thread 103. The locking inner ring 401 and the locking outer ring 101 are threadedly connected via the outer thread 403 and the inner thread 103. The filter screen 5 is arranged on the sealing cover 4. The filter screen 5 is inserted in the cavity of the four-way body 1. A sealing ring 404 that cooperates with the sealing groove 102 is arranged on the outside of the filter screen 5 on the sealing cover 4. The sealing ring 404 is inserted in the sealing groove 102.

[0023] The filter screen 5 is inserted into the cavity of the four-way main body 1 to achieve a filtering effect, and the locking inner ring 401 is threadedly connected to the locking outer ring 101, and the sealing cover 4 can be rotated to unscrew the locking inner ring 401 from the locking outer ring 101 (rotate the locking inner ring 401 clockwise to screw it out, and rotate the locking inner ring 401 counterclockwise to screw it in), and the filter screen 5 can be removed from the four-way main body 1.

[0024] Furthermore, the filter screen 5 is in contact with the inner wall of the cross-body 1 .

[0025] Furthermore, an auxiliary block 402 is provided on the inner side of the locking inner ring 401 , and the auxiliary block 402 can facilitate the rotation of the sealing cover 4 .

[0026] Furthermore, a sealing rubber pad is provided inside the sealing groove 102 to improve the sealing effect.

[0027] Furthermore, a plurality of connecting pipes 2 are provided on the outer side wall of the four-way body 1 for connecting HDPE pipes.

[0028] Furthermore, a connection block 3 is provided on one side of the cross body 1 away from the locking outer ring 101 , and the connection block 3 can be used to fix the cross body 1 on other objects.

[0029] In summary, when the device is in use, the filter screen 5 inserted in the four-way body 1 can achieve a filtering effect. When the filter screen 5 in the four-way body 1 needs to be maintained, it is only necessary to pinch the auxiliary block 402, and then rotate the locking inner ring 401, so that the locking inner ring 401 drives the sealing cover 4 and the filter screen 5 to rotate, and after the locking inner ring 401 is screwed out of the locking outer ring 101, the filter screen 5 can be taken out from the four-way body 1, thereby completing the removal and maintaining the filter screen 5. When installing, it is only necessary to reinsert the filter screen 5 into the four-way body 1, and then rotate the locking inner ring 401 in the opposite direction, and screw the locking inner ring 401 into the locking outer ring 101. After it is fully locked, the sealing ring 404 will be inserted into the sealing groove 102, and the installation can be completed.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cross-shaped structure for connecting HDPE pipes, characterized in that: The invention comprises a four-way body (1), a sealing cover (4) and a filter screen (5), wherein a cavity is provided in the middle of the four-way body (1), an opening is provided at one end of the four-way body (1), a sealing groove (102) is provided on the outside of the opening, the sealing groove (102) is an annular structure, a locking outer ring (101) is provided on the outside of the sealing groove (102), the sealing cover (4) is provided on the inside of the locking outer ring (101), an inner thread (103) is provided on the inner side wall of the locking outer ring (101), a locking inner ring (401) is provided on the outside of the sealing cover (4), and a locking inner ring (401) is provided on the outside of the sealing cover (4). An outer wall of the tightening inner ring (401) is provided with an outer thread (403) that matches the inner thread (103); the locking inner ring (401) and the locking outer ring (101) are threadedly connected via the outer thread (403) and the inner thread (103); a filter screen (5) is provided on the sealing cover (4); the filter screen (5) is inserted into the cavity of the four-way body (1); a sealing ring (404) that matches the sealing groove (102) is provided on the sealing cover (4) on the outer side of the filter screen (5); the sealing ring (404) is inserted into the sealing groove (102).

2. A cross-shaped structure for connecting HDPE pipes according to claim 1, characterized in that: The filter screen (5) is in contact with the inner wall of the four-way body (1).

3. The HDPE pipe connection cross-shaped structure according to claim 1, characterized in that: An auxiliary block (402) is arranged on the inner side of the locking inner ring (401).

4. The HDPE pipe connection cross-shaped structure according to claim 1, characterized in that: A sealing rubber pad is arranged inside the sealing groove (102).

5. The HDPE pipe connection cross structure according to claim 1, characterized in that: A plurality of connecting pipes (2) are arranged on the outer side wall of the four-way body (1).

6. The HDPE pipe connection cross structure according to claim 1, characterized in that: A connecting block (3) is provided on the side of the cross-connection body (1) away from the locking outer ring (101).

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