Leakage-proof connecting piece for tap water pipeline

Abstract

The utility model provides a leakage-proof connecting piece for a tap water pipeline, and relates to the technical field of pipeline connection. The connecting piece body is provided with a pipeline connecting cylinder in the left-right direction, conical surface ring grooves are formed in the outer circumferences of the two ends of the pipeline connecting cylinder, limiting ring grooves are formed in the outer circumferences of the left side and the right side of the pipeline connecting cylinder, and eight rotation stopping grooves in the left-right direction are formed in the outer circumference of the middle of the pipeline connecting cylinder in an annular array mode. The outer circumferences of the two ends of the pipeline connecting cylinder are sleeved with tap water pipelines in the left-right direction, threads are formed in the outer circumferences of the inner ends of the tap water pipelines, conical surface ring grooves of the pipeline connecting cylinder are conveniently inserted into conical surface ring grooves of the tap water pipelines, and the leakage-proof effect is conveniently enhanced through extrusion of conical surfaces; the problems that due to the fact that a pipeline connecting piece is in butt joint with a pipeline through a cylindrical face, the leakage-proof effect after locking is poor, a conical face is inconvenient to arrange on the connecting piece, and the connecting piece is in butt joint with the pipeline through the conical face to reinforce sealing are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline connection, in particular to a leak-proof connector for a tap water pipeline. Background Art

[0002] The tap water pipe is a water supply pipe in the urban infrastructure and an important part of the urban water supply system. It is responsible for transporting treated tap water to every corner of the city and providing residents with clean, safe and convenient drinking water. The tap water pipe is mainly composed of water pipes, connectors, check valves, pressure regulating valves, flow meters and water collection pools, among which connectors are the main components for connecting water pipes.

[0003] Based on the above, the inventors have found that the existing leak-proof connectors for tap water pipes have the following deficiencies:

[0004] 1. The pipe connector is butted against the pipe through a cylindrical surface, resulting in poor leak-proof effect after locking. It is inconvenient to set a conical surface on the connector to strengthen the seal by butting the connector against the pipe through the conical surface.

[0005] 2. There is no clamping measure on the locking cylinder of the connector, so the connector cannot be pressed tightly inside the pipe. It is not convenient to add clamping measures on the locking cylinder to pull the connector to press it tightly inside the pipe. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a leak-proof connector for a tap water pipe to solve the problem that the existing pipe connector is connected to the pipe through a cylindrical surface, resulting in a poor leak-proof effect after locking, and it is not convenient to set a conical surface on the connector to make the connector connect with the pipe through the conical surface to strengthen the seal; there is no clamping measure on the locking cylinder of the connector, so the connector cannot be pressed inside the pipe, and it is not convenient to add a clamping measure on the locking cylinder to pull the connector to make the connector pressed inside the pipe.

[0007] The purpose and effect of the leak-proof connector for tap water pipes of the utility model are achieved by the following specific technical means:

[0008] The leak-proof connector for tap water pipes comprises a connector body; the connector body is provided with left and right pipe connecting tubes, the outer circumferences of both ends of the pipe connecting tubes are provided with conical ring grooves, the outer circumferences of the left and right sides of the pipe connecting tubes are provided with limit ring grooves, the middle outer circumference of the pipe connecting tube is provided with eight left and right anti-rotation grooves in a circular array, the outer circumferences of both ends of the pipe connecting tube are sleeved with left and right tap water pipes, the outer circumference of the inner end of the tap water pipe is provided with threads, and the inner circumference of the inner end of the tap water pipe is provided with a conical ring groove.

[0009] Furthermore, a limiting ring plate is arranged on the outer circumference of the outer end of the threaded column of the locking force column, and a regular hexagonal prism is arranged on the outer end surface of the threaded column of the locking force column.

[0010] Furthermore, a locking force-bearing column in the inward and outward directions is installed inside the threaded hole connected to the locking cylinder, and a threaded column is arranged at the inner end of the locking force-bearing column.

[0011] Furthermore, eight strip grooves in left and right directions are formed in an annular array on the outer circumference of the connecting and locking cylinder, and eight threaded holes penetrating therethrough are formed in an annular array on the inner end wall of the connecting and locking cylinder.

[0012] Furthermore, a connecting locking cylinder in left and right directions is installed on the outer circumference of the inner end of the tap water pipe through threads, and a thread is provided on the inner circumference of the connecting locking cylinder.

[0013] Furthermore, an external sealing ring is arranged outside between the pipe connecting tube and the tap water pipe, and a fitting conical surface is arranged on the inner circumference of the external sealing ring.

[0014] Furthermore, an internal sealing ring is arranged between the pipe connecting tube and the tap water pipe, and a matching conical surface is arranged on the outer circumference of the internal sealing ring.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The conical ring groove of the pipe connecting tube is conveniently inserted into the conical ring groove of the tap water pipe, and the anti-leakage effect is enhanced by squeezing the conical surface. This solves the problem that the pipe connecting piece is connected to the pipe through the cylindrical surface, resulting in poor anti-leakage effect after locking, and it is inconvenient to set the conical surface on the connecting piece to strengthen the sealing by connecting the connecting piece with the pipe through the conical surface.

[0017] The convenient locking force column is installed on the connecting locking cylinder through a thread and hooks the pipe connecting cylinder, so that the pipe connecting cylinder is pressed tightly against the inside of the tap water pipe to strengthen the seal, which solves the problem that there is no pressing measure on the locking cylinder of the connecting piece, the connecting piece cannot be pressed tightly against the inside of the pipe, and it is inconvenient to add pressing measures on the locking cylinder to pull the connecting piece so that the connecting piece is pressed tightly against the inside of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a main structural schematic diagram of the utility model.

[0019] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0020] Figure 3 It is a schematic diagram of the disassembled structure of the utility model.

[0021] Figure 4It is a schematic diagram of the inward movement of the connecting locking cylinder of the utility model.

[0022] Figure 5 It is an assembly schematic diagram of the utility model for connecting a locking cylinder and a locking force-bearing column.

[0023] Figure 6 The utility model is a cross-sectional schematic diagram of the butt connection between a pipeline connecting tube and a tap water pipeline.

[0024] In the figure: 1. Connector body; 2. Pipe connecting tube; 3. Water pipe; 4. Internal sealing ring; 5. External sealing ring; 6. Connecting locking tube; 7. Locking force column. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and examples.

[0026] Embodiment 1:

[0027] As attached Figure 1 To Attachment Figure 6 As shown:

[0028] The utility model provides a leak-proof connector for a tap water pipe, comprising a connector body 1; the connector body 1 is provided with a pipe connecting tube 2 in the left and right directions, which is convenient for carrying various components; the outer circumferences of both ends of the pipe connecting tube 2 are provided with conical ring grooves, which are convenient for inserting into the conical ring grooves of the tap water pipe 3; the outer circumferences of the left and right sides of the pipe connecting tube 2 are provided with limited ring grooves, which are convenient for inserting a locking force column 7 to prevent the connection locking tube 6 from falling off; the middle outer circumference of the pipe connecting tube 2 is provided with eight left and right anti-rotation grooves in an annular array, which is convenient for anti-rotation by tools; the two ends of the pipe connecting tube 2 are provided with conical ring grooves, which are convenient for inserting a locking force column 7 to prevent the connection locking tube 6 from falling off; The outer circumference of each end is sleeved with a left and right water pipe 3, which is convenient for connecting the water pipe 3. The outer circumference of the inner end of the water pipe 3 is provided with a thread, which is convenient for connecting the locking tube 6 and installing it through the thread. The inner circumference of the inner end of the water pipe 3 is provided with a conical ring groove, which is convenient for inserting the conical ring groove of the pipe connecting tube 2. An internal sealing ring 4 is arranged between the pipe connecting tube 2 and the water pipe 3, which is convenient for sealing the inside between the pipe connecting tube 2 and the water pipe 3. The outer circumference of the internal sealing ring 4 is provided with a matching conical surface, which is convenient for matching with the conical ring groove of the water pipe 3.

[0029] Among them, an external sealing ring 5 is arranged between the pipe connecting tube 2 and the water pipe 3, which is convenient for sealing the outside of the pipe connecting tube 2 and the water pipe 3. The inner circumference of the external sealing ring 5 is provided with a matching conical surface, which is convenient for mutual matching with the conical ring groove of the pipe connecting tube 2. The outer circumference of the inner end of the water pipe 3 is threadedly installed with a connecting locking tube 6 in the left and right directions, which is convenient for locking the pipe connecting tube 2 and the water pipe 3. The inner circumference of the connecting locking tube 6 is provided with a thread, which is convenient for being installed on the water pipe 3 through the thread. The outer circumference of the connecting locking tube 6 is provided with eight or so annular arrays. The strip groove in the direction is convenient for rotation and disassembly by tools. Eight threaded holes are arranged in a circular array on the inner end wall of the connecting locking cylinder 6, which is convenient for the locking force column 7 to be installed by threads. The locking force column 7 in the inner and outer directions is installed inside the threaded hole of the connecting locking cylinder 6 to prevent the connecting locking cylinder 6 from being separated from the outer circumference of the pipeline connecting cylinder 2. The inner end of the locking force column 7 is provided with a threaded column, which is convenient for threaded installation. A limiting ring plate is provided on the outer circumference of the outer end of the threaded column of the locking force column 7, which is convenient for installation and limiting. The outer end face of the threaded column of the locking force column 7 is provided with a regular hexagonal prism, which is convenient for rotation and disassembly by tools.

[0030] The specific usage and function of this embodiment are as follows:

[0031] In the utility model, Figure 1 The connector body 1 is in the pipe connection state, and the outer end of the water pipe 3 is in the cut-off state. At this time, the connection locking cylinder 6 is in the locked state of moving outward. At the same time, the connection locking cylinder 6 hooks the pipe connection cylinder 2 through the locking force column 7 and exerts force outward synchronously, so that the pipe connection cylinder 2 is pressed tightly inside the water pipe 3, and the internal sealing ring 4 and the external sealing ring 5 are squeezed synchronously for sealing. The state is as shown in FIG. Figure 2 As shown; when the pipe connection cylinder 2 and the water pipe 3 are disassembled, the pipe connection cylinder 2 and the water pipe 3 are stopped by a tool, and the connection locking cylinder 6 is rotated by the tool to engage with the thread of the water pipe 3, so that the connection locking cylinder 6 moves inward through the thread engagement until the connection locking cylinder 6 is separated from the outer circumference of the water pipe 3, and the state is as shown Figure 4 As shown, the tap water pipe 3 is then moved outward to separate from the conical ring groove of the pipe connecting tube 2.

[0032] Embodiment 2:

[0033] The difference from Example 1 is that the bottom end surface of the limiting ring plate of the locking force column 7 can also be set to a frosted surface, thereby increasing the friction between the bottom end surface of the limiting ring plate of the locking force column 7 and the connecting locking cylinder 6, preventing the locking force column 7 from rotating loose.

[0034] Embodiment three:

[0035] The difference from the first embodiment is that the regular hexagonal prism of the locking force column 7 can also be set as a regular heptagonal prism, so that the locking force column 7 can only be rotated by a special tool that cooperates with the regular heptagonal prism, preventing non-staff from rotating and disassembling the locking force column 7.

Claims

1. A leak-proof connector for a water pipe, characterized in that: The invention comprises a connector body (1); the connector body (1) is provided with a pipe connecting tube (2); the outer circumferences of both ends of the pipe connecting tube (2) are provided with conical ring grooves; the outer circumferences of the left and right sides of the pipe connecting tube (2) are provided with limit ring grooves; the middle outer circumference of the pipe connecting tube (2) is provided with eight left and right rotation stop grooves in an annular array; the outer circumferences of both ends of the pipe connecting tube (2) are provided with tap water pipes (3); the outer circumferences of the inner ends of the tap water pipes (3) are provided with threads; and the inner circumferences of the inner ends of the tap water pipes (3) are provided with conical ring grooves.

2. The leak-proof connector for a tap water pipe according to claim 1, characterized in that: An internal sealing ring (4) is provided between the pipe connecting tube (2) and the tap water pipe (3), and a fitting conical surface is provided on the outer circumference of the internal sealing ring (4).

3. The leak-proof connector for tap water pipes according to claim 2, characterized in that: An external sealing ring (5) is arranged outside between the pipeline connecting tube (2) and the tap water pipeline (3), and a fitting conical surface is arranged on the inner circumference of the external sealing ring (5).

4. The leak-proof connector for tap water pipes according to claim 3, characterized in that: A connecting locking cylinder (6) is installed on the outer circumference of the inner end of the tap water pipe (3) via threads, and a thread is provided on the inner circumference of the connecting locking cylinder (6).

5. The leak-proof connector for tap water pipes according to claim 4, characterized in that: The outer circumference of the connecting locking cylinder (6) is provided with eight strip grooves in the left and right directions in an annular array, and the inner end wall of the connecting locking cylinder (6) is provided with eight through-going threaded holes in an annular array.

6. The leak-proof connector for tap water pipes according to claim 5, characterized in that: A locking force-bearing column (7) is installed inside the threaded hole of the connecting locking cylinder (6), and a threaded column is arranged at the inner end of the locking force-bearing column (7).

7. The leak-proof connector for a tap water pipe according to claim 6, characterized in that: A limiting ring plate is provided on the outer circumference of the outer end of the threaded column of the locking force-bearing column (7), and a regular hexagonal prism is provided on the outer end surface of the threaded column of the locking force-bearing column (7).

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