Leakage-proof plug

Abstract

The leakage-proof plug comprises a plug core, a plugging rubber sleeve, a driving rod and a locking assembly, the plug core is cylindrical, the plugging rubber sleeve used for sealing a pipe opening is arranged on the outer wall of the plug core, the locking assembly is arranged on one side of the plug core, and the driving rod is rotationally connected to the middle of the plug core and is coaxial with the plug core. One end of the driving rod extends out of the plugging core and is provided with an outer hexagonal part, the other end of the driving rod extends out of the plugging core and is provided with a threaded part, and the threaded part of the driving rod is used for driving the locking assembly to fix the plugging core and the plugging rubber sleeve at the pipe orifice; the plugging rubber sleeve is plugged into the pipe orifice for plugging, so that the effect of plugging the pipeline can be achieved even if the plugged pipe orifice has no internal thread or the internal thread slips; the driving rod is rotated to drive the driving block to move, so that the driving block drives the first supporting rod and the second supporting rod to expand in the radial direction of the driving rod, the positioning block abuts against the inner wall of the pipeline to position the whole, and therefore the plugging rubber sleeve plugged into the pipeline is prevented from being ejected out by internal pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of leakage prevention, in particular to a leakage prevention plug. Background Art

[0002] The existing plug is screwed into the inner thread of the pipe mouth for sealing. When the inner thread of the pipe mouth is rusted or the thread is stripped, the plug cannot be completely screwed into the pipe for sealing. This causes the plug to be not very stable and tight. After sealing, the plug will loosen under the action of the internal pressure of the pipe, thereby causing liquid leakage in the pipe. Therefore, a leak-proof plug is designed to solve the above problem. Utility Model Content

[0003] In view of the shortcomings of the existing leak-proof plug technology, the utility model aims to provide a leak-proof plug, which has the advantages of being suitable for pipes with damaged threads or no threads and will not loosen after plugging.

[0004] In order to achieve the above-mentioned purpose, a technical solution adopted by the utility model is: a leak-proof plug, including a plugging core, a plugging rubber sleeve, a driving rod and a locking assembly, the plugging core is cylindrical and its outer wall is provided with a plugging rubber sleeve for sealing the pipe orifice, the locking assembly is arranged on one side of the plugging core, the driving rod is rotatably connected to the middle of the plugging core and is coaxial with the plugging core, one end of the driving rod extends out of the plugging core and has an external hexagonal portion, the other end of the driving rod extends out of the plugging core and has a threaded portion, the threaded portion of the driving rod is used to drive the locking assembly to fix the plugging core and the plugging rubber sleeve to the pipe orifice;

[0005] Preferably, the plugging rubber sleeve has a conical outer wall and a vertical outer wall, the minimum outer diameter of the conical outer wall is smaller than the inner diameter of the blocked pipe, the maximum outer diameter of the conical outer wall is the same as the outer diameter of the vertical outer wall, the outer diameter of the vertical outer wall is larger than the inner diameter of the blocked pipe, and the plugging rubber sleeve is elastic; when blocking the pipe, the plugging rubber sleeve is inserted into the pipe opening as a whole, and the plugging process is assisted by the conical outer wall to assist the plugging rubber sleeve to enter the blocked pipe opening, and the vertical outer wall squeezes the inner wall of the pipe to block;

[0006] Preferably, the locking assembly includes a first support rod, a second support rod, a driving block and a positioning block, the driving block is screwed on the outer end of the threaded portion of the driving rod through a thread, the driving block is symmetrically hinged with the first support rod on both sides, the other end of the first support rod is hinged with the second support rod, and the other end of the second support rod is hinged with the plug core, the first support rod, the second support rod and the driving rod form an isosceles triangle, and a positioning block is provided at the hinge position of the first support rod and the second support rod; when the driving rod is rotated, the driving block is driven by the threaded portion of the driving rod to approach the plug core, and in this process the driving block drives the first support rod and the second support rod to open radially along the driving rod, thereby driving the positioning block to press against the inner wall of the pipe for positioning;

[0007] Preferably, a rubber sealing ring for sealing is provided between the driving rod and the plug core;

[0008] The beneficial effects of the utility model are: 1. By plugging the pipe mouth with a sealing rubber sleeve, even if the blocked pipe mouth has no internal threads or the internal threads are damaged, the effect of plugging the pipe can be achieved; 2. By rotating the driving rod to drive the driving block to move, the driving block drives the first support rod and the second support rod to open radially along the driving rod, so that the positioning block abuts against the inner wall of the pipe to position the whole, thereby preventing the sealing rubber sleeve inserted into the pipe from being pushed out by the internal pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a cross-sectional structural view of the utility model;

[0010] Figure 2 This is a cross-sectional structural view of the utility model in the state of blocking a pipeline. DETAILED DESCRIPTION

[0011] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0012] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0013] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "provided with", and "set" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0014] See also Figure 1 to Figure 2 , the utility model embodiment includes:

[0015] A leak-proof plug, comprising a plugging core 1, a plugging rubber sleeve 2, a driving rod 3 and a locking assembly 4, wherein the plugging core 1 is cylindrical and its outer wall is provided with a plugging rubber sleeve 2 for sealing a pipe orifice, the locking assembly 4 is arranged on one side of the plugging core 1, the driving rod 3 is rotatably connected to the middle of the plugging core 1 and is coaxial therewith, one end of the driving rod 3 extends out of the plugging core 1 and has an external hexagonal portion 31, and the other end of the driving rod 3 extends out of the plugging core 1 and has a threaded portion 32, the threaded portion 32 of the driving rod 3 is used to drive the locking assembly 4 to fix the plugging core 1 and the plugging rubber sleeve 2 at the pipe orifice;

[0016] The plugging rubber sleeve 2 has a conical outer wall 21 and a vertical outer wall 22. The minimum outer diameter of the conical outer wall 21 is smaller than the inner diameter of the blocked pipe, the maximum outer diameter of the conical outer wall 21 is the same as the outer diameter of the vertical outer wall 22, the outer diameter of the vertical outer wall 22 is larger than the inner diameter of the blocked pipe, and the plugging rubber sleeve 2 is elastic. When plugging the pipe, the plugging rubber sleeve 2 is inserted into the pipe opening as a whole. During the insertion process, the conical outer wall 21 assists the plugging rubber sleeve 2 to enter the blocked pipe opening, and the vertical outer wall 22 squeezes the inner wall of the pipe to plug.

[0017] The locking assembly 4 includes a first support rod 41, a second support rod 42, a driving block 43 and a positioning block 44, the driving block 43 is screwed on the outer end of the threaded portion 32 of the driving rod 3 by a thread, the driving block 43 is symmetrically hinged with the first support rod 41 on both sides, the other end of the first support rod 41 is hinged with the second support rod 42, and the other end of the second support rod 42 is hinged with the plug core 1, the first support rod 41, the second support rod 42 and the driving rod 3 form an isosceles triangle, and the first support rod 41 and the second support rod 42 are hinged at the position where the positioning block 44 is provided; when the driving rod 3 is rotated, the driving block 43 is driven by the threaded portion 32 of the driving rod 3 to approach the plug core 1, and in this process, the driving block 43 drives the first support rod 41 and the second support rod 42 to open radially along the driving rod 3, thereby driving the positioning block 44 to abut against the inner wall of the pipe for positioning;

[0018] A rubber sealing ring for sealing is also provided between the driving rod 3 and the plug core 1;

[0019] Through the above settings, in the actual working process, its specific working principle is as follows:

[0020] When plugging the pipe orifice, one side of the locking assembly 4 of the device is first inserted into the pipe orifice, and then the plugging rubber sleeve 2 is inserted into the pipe opening as a whole. During the insertion process, the tapered outer wall 21 assists the plugging rubber sleeve 2 to enter the blocked pipe orifice, and the vertical outer wall 22 squeezes the inner wall of the pipe to plug it. Then, a tool is used to rotate the outer hexagonal portion 31 at one end of the driving rod 3. While the driving rod 3 is rotated, the driving block 43 is driven by the threaded portion 32 of the driving rod 3 to approach the plugging core 1. In this process, the driving block 43 drives the first support rod 41 and the second support rod 42 to open radially along the driving rod 3, so that the positioning block 44 abuts against the inner wall of the pipe to position the whole, thereby preventing the plugging rubber sleeve 2 inserted into the pipe from being pushed out by the internal pressure;

[0021] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A leak-proof plug, characterized in that: It includes a plugging core, a sealing rubber sleeve, a driving rod and a locking assembly. The plugging core is cylindrical and its outer wall is provided with a sealing rubber sleeve for sealing the pipe mouth. The locking assembly is arranged on one side of the plugging core. The driving rod is rotatably connected to the middle part of the plugging core and is coaxial with the plugging core. One end of the driving rod extends out of the plugging core and has an external hexagonal portion, and the other end of the driving rod extends out of the plugging core and has a threaded portion. The threaded portion of the driving rod is used to drive the locking assembly to fix the plugging core and the sealing rubber sleeve to the pipe mouth.

2. A leak-proof plug according to claim 1, characterized in that: The plugging rubber sleeve has a conical outer wall and a vertical outer wall. The minimum outer diameter of the conical outer wall is smaller than the inner diameter of the blocked pipe, the maximum outer diameter of the conical outer wall is the same as the outer diameter of the vertical outer wall, the outer diameter of the vertical outer wall is larger than the inner diameter of the blocked pipe, and the plugging rubber sleeve is elastic.

3. The anti-leakage plug according to claim 1, characterized in that: The locking assembly includes a first support rod, a second support rod, a driving block and a positioning block, the driving block is screwed on the outer end of the threaded part of the driving rod through a thread, the first support rod is symmetrically hinged on both sides of the driving block, the other end of the first support rod is hinged to the second support rod, and the other end of the second support rod is hinged to the plug core, the first support rod, the second support rod and the driving rod form an isosceles triangle, and a positioning block is provided at the hinge position of the first support rod and the second support rod.

4. The anti-leakage plug according to claim 1, characterized in that: A rubber sealing ring for sealing is also provided between the driving rod and the plug core.

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