A sealing plug for connecting pipe

Abstract

The utility model provides a sealing plug for a connecting pipe, which belongs to the technical field of sealing plugs, including a plug body, a sealing cylinder movably arranged on the outside of the plug body, the plug body including a hexagonal nut at the top, the bottom end of the hexagonal nut fixedly connected to a limiting ring, the bottom end of the limiting ring fixedly connected to a threaded column, the bottom end edge of the threaded column is provided with a chamfer, the bottom end of the threaded column is fixedly connected to a cylinder, an installation groove matched with the limiting ring is provided inside the top end of the sealing cylinder, a threaded groove matched with the threaded column is provided in the middle part of the sealing cylinder, and a triangular plate for blocking the chamfer is integrally fixedly connected to the bottom end of the threaded groove. The utility model has the following beneficial effects: the O-type sealing ring can form an effective seal on the surface of the limiting groove to prevent liquid or gas leakage, improve the sealing performance, ensure the normal operation of equipment or components, and by gradually reducing the diameter of the components, the tightness and connection stability between the components can be ensured, making the overall structure more solid.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing plugs, in particular to a sealing plug for a connecting pipe. Background Art

[0002] The alias of plug is screw plug, plug, throat plug and plug. It is a kind of mechanical fastener. Its function is sealing. It blocks the unnecessary openings in the pipeline to play a sealing role. Sealing plugs are usually required to seal the pipeline. They are the same as blind plates, heads and pipe caps. There are many types of plugs, such as tapered thread plugs, hexagonal plugs, hexagonal plugs, etc.

[0003] Among them, a universal catheter sealing plug disclosed in application number CN201420533587.8 is also an increasingly mature technology. By adjusting the pressure at the front and rear ends of the elastic expansion sealing tube to control the outward expansion amplitude of the circumferential cylinder of the elastic expansion sealing tube, catheters of different specifications can be blocked and sealed. It has strong versatility and can greatly reduce the number and specifications of traditional plugs, effectively saving money. It is fast to install, easy to manage, and has a simple structure and low manufacturing cost. In addition, according to the different pressure values ​​of the pressurized tube, the friction between the elastic expansion sealing tube and the tube wall can be increased by adjusting the pressure at the front and rear ends of the elastic expansion sealing tube to overcome the thrust applied by the air pressure on the end face of the plug. It is flexible and convenient to use, and the blocking and sealing effect is good and guaranteed.

[0004] Based on this, we agree with the advantages of the above products, but there are still the following defects:

[0005] Although this type of sealing plug can increase the friction between the sealing tube and the catheter wall by adjusting the pressure, there is still a risk of leakage during long-term use due to aging of the material or wear of the catheter wall. Utility Model Content

[0006] The utility model aims to provide a sealing plug for a pipe connection, so as to solve the problem that the pipe wall of the pipe may be worn and leaked after long-term use as mentioned in the background art.

[0007] The utility model provides a sealing plug for a pipe connection, comprising a plug body, wherein a sealing cylinder is movably arranged outside the plug body;

[0008] The plug body includes a hexagonal nut at the top, the bottom end of the hexagonal nut is fixedly connected to a limiting ring, the bottom end of the limiting ring is fixedly connected to a threaded column, the bottom edge of the threaded column is chamfered, and the bottom end of the threaded column is fixedly connected to a cylinder;

[0009] The top of the sealing cylinder is provided with an installation groove matched with the limit ring, the middle of the sealing cylinder is provided with a threaded groove matched with the threaded column, the bottom end of the threaded groove is integrally fixedly connected with a triangular plate for blocking the chamfer, and the bottom end of the sealing cylinder is provided with a through hole with a diameter larger than the cylinder.

[0010] In this embodiment, a larger contact area can be provided by the hexagonal nut, and the plug body can be easily tightened or loosened using a hexagonal wrench. The fixed connection between the limit ring, the threaded column and the cylinder makes the overall structure of the plug body strong and durable, and can effectively withstand external pressure and force. The cylinder ensures the sealing performance, reduces the possibility of liquid or gas leakage, and improves the safety of the sealing plug. The matching of the mounting groove inside the top of the sealing tube and the limit ring, as well as the matching of the threaded groove opened in the middle and the threaded column, can ensure a firm connection between the sealing tube and other components, and avoid loosening or falling off during use. The triangular plate can effectively block the chamfer, ensure a tighter connection between the sealing tube and the threaded column, and enhance the sealing performance.

[0011] In an implementation manner of the utility model, a limiting groove is provided on the surface of the limiting ring close to the bottom end, and an O-type sealing ring is sleeved on the surface of the limiting groove.

[0012] In this solution, an O-ring can form an effective seal on the surface of the limit groove to prevent liquid or gas leakage, thereby improving the sealing performance and ensuring the normal operation of the equipment or components.

[0013] In one embodiment of the utility model, an inner circular hole is opened inside the hexagonal nut and the limiting ring and extends to the middle of the threaded column. A snap-fitting hole with a diameter smaller than the inner circular hole is opened inside the bottom end of the threaded column and penetrates into the cylinder. The inner circular hole and the snap-fitting hole are communicated with each other.

[0014] In this solution, since the inner circular holes are provided inside the hexagonal nut and the limiting ring and extend to the middle of the threaded column 112, a better sealing effect can be provided, and the engaging hole can increase the stability of the engaging cylinder.

[0015] In an implementation manner of the utility model, the diameter of the hexagonal nut is larger than that of the limiting ring, the diameter of the limiting ring is larger than that of the threaded column, and the diameter of the threaded column is larger than that of the cylinder.

[0016] In this solution, by gradually reducing the diameter of the components, the tightness and connection stability between the components can be ensured, making the overall structure more solid.

[0017] In an implementation manner of the utility model, a circular arc groove is provided on the bottom surface of the sealing cylinder, and the diameter of the top end of the sealing cylinder is adapted to the hexagonal nut.

[0018] In this solution, by matching the diameter of the sealing cylinder with the hexagonal nut, it not only helps to enhance the connection stability, but also ensures a tighter connection between the two.

[0019] In an implementation manner of the utility model, a clamping cylinder is inserted and connected inside the clamping hole, and the sealing cylinder is threadedly connected to the plug body.

[0020] In this solution, the interpenetrating connection between the locking hole and the locking cylinder can strengthen the stable connection between the sealing cylinder and the plug body, and the threaded connection between the sealing cylinder and the plug body can also provide additional support and fixing force, thereby enhancing the stability of the overall connection.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] Through the fixed connection of the limit ring, threaded column and cylinder, the overall structure of the plug body is firm and durable, and can effectively withstand external pressure and force. The cylinder ensures the sealing performance, reduces the possibility of liquid or gas leakage, and improves the safety of the sealing plug. The triangular plate can effectively block the chamfer of the threaded column, ensure that the connection between the sealing cylinder and the threaded column is tighter, enhance the sealing performance, and effectively prevent liquid or gas leakage. The through hole at the bottom of the sealing cylinder reduces the pressure accumulation that may be generated during use, ensuring the normal operation of the sealing plug. The O-ring can form an effective seal on the surface of the limit groove to prevent liquid or gas leakage, improve the sealing performance, and ensure the normal operation of the equipment or components. By gradually reducing the diameter of the components, the tightness and connection stability between the components can be ensured, making the overall structure more solid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the structure of the sealing plug of the utility model;

[0025] Figure 2 It is a schematic diagram of the cutaway structure of the plug body of the utility model;

[0026] Figure 3 It is a schematic diagram of the cutaway structure of the sealing cylinder of the utility model.

[0027] In the figure: 100, plug body; 110, hexagonal nut; 111, limiting ring; 112, threaded column; 113, cylinder; 114, limiting groove; 115, O-ring; 116, inner hole; 117, engaging hole; 118, engaging cylinder;

[0028] 200, sealing cylinder; 210, mounting groove; 211, threaded groove; 212, triangular plate; 213, through hole. DETAILED DESCRIPTION

[0029] 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.

[0030] Example

[0031] See also Figure 1-3 The utility model provides a technical solution: a sealing plug for a pipe connection, comprising a plug body 100, and a sealing cylinder 200 is movably provided outside the plug body 100;

[0032] For details, please refer to Figure 2 The plug body 100 includes a hexagonal nut 110 at the top, the bottom end of the hexagonal nut 110 is fixedly connected to a limiting ring 111, the bottom end of the limiting ring 111 is fixedly connected to a threaded column 112, the bottom edge of the threaded column 112 is chamfered, and the bottom end of the threaded column 112 is fixedly connected to a cylinder 113.

[0033] In a specific embodiment, please refer to Figure 2 The hexagonal nut 110 can provide a larger contact area, and the plug body 100 can be easily tightened inside the sealing tube 200 or loosened inside the sealing tube 200 using a hexagonal wrench. The fixed connection between the limit ring 111, the threaded column 112 and the cylinder 113 makes the overall structure of the plug body 100 firm and durable, and can effectively withstand external pressure and force. The cylinder 113 ensures the sealing performance, reduces the possibility of liquid or gas leakage, and improves the safety of the sealing plug.

[0034] See also Figure 3 A mounting groove 210 matched with the limiting ring 111 is provided inside the top of the sealing cylinder 200, a threaded groove 211 matched with the threaded column 112 is provided in the middle of the sealing cylinder 200, a triangular plate 212 for blocking the chamfer is integrally fixedly connected to the bottom end of the threaded groove 211, and a through hole 213 with a diameter larger than the cylinder 113 is provided inside the bottom end of the sealing cylinder 200.

[0035] In a specific embodiment, please refer to Figure 3By matching the mounting groove 210 at the top of the sealing cylinder 200 with the limiting ring 111, and matching the threaded groove 211 in the middle with the threaded column 112, a firm connection between the sealing cylinder 200 and other components can be ensured to avoid loosening or falling off during use. The triangular plate 212 can effectively block the chamfer of the threaded column 112, ensuring a tighter connection between the sealing cylinder 200 and the threaded column 112, thereby enhancing the sealing performance and effectively preventing liquid or gas leakage. The through hole 213 at the bottom of the sealing cylinder 200 reduces the pressure accumulation that may occur during use, thereby ensuring the normal operation of the sealing plug.

[0036] See also Figure 2 A limiting groove 114 is provided on the surface of the limiting ring 111 near the bottom end, and an O-type sealing ring 115 is sleeved on the surface of the limiting groove 114.

[0037] In a specific embodiment, please refer to Figure 2 The O-ring 115 can form an effective seal on the surface of the limiting groove 114 to prevent liquid or gas leakage, improve the sealing performance, and ensure the normal operation of the equipment or components. The O-ring 115 is sleeved on the surface of the limiting groove 114 of the limiting ring 111, making installation and disassembly more convenient and quick, saving time for maintenance and replacement of parts.

[0038] See also Figure 3 An inner circular hole 116 is formed inside the hexagonal nut 110 and the limiting ring 111 and extends to the middle of the threaded column 112. A locking hole 117 with a diameter smaller than that of the inner circular hole 116 is formed inside the bottom end of the threaded column 112 and penetrates into the cylinder 113. The inner circular hole 116 and the locking hole 117 are connected.

[0039] In a specific embodiment, please refer to Figure 3 Since the inner circular hole 116 is opened inside the hexagonal nut 110 and the limiting ring 111 and extends to the middle of the threaded column 112, a better sealing effect can be provided, so that the sealing plug can be better fixed on the threaded column 112, effectively preventing liquid or gas leakage. The locking hole 117 can increase the stability of the locking cylinder 118 and reduce shaking and loosening during operation.

[0040] See also Figure 2 The diameter of the hexagonal nut 110 is larger than the limiting ring 111 , the diameter of the limiting ring 111 is larger than the threaded column 112 , and the diameter of the threaded column 112 is larger than the cylinder 113 .

[0041] In a specific embodiment, please refer to Figure 2 By gradually reducing the diameter of the components, the tightness and connection stability between the components can be ensured, making the overall structure more solid. During the assembly process, the problems of loosening and falling off can be effectively avoided.

[0042] See also Figure 3 The bottom surface of the sealing cylinder 200 is provided with an arc groove, and the diameter of the top end of the sealing cylinder 200 is adapted to the hexagonal nut 110.

[0043] In a specific embodiment, please refer to Figure 3 By matching the diameter of the sealing cylinder 200 with the hexagonal nut 110, it not only helps to enhance the connection stability, but also ensures that the connection between the two is tighter, the installation is more convenient and quick, and the installation efficiency is improved.

[0044] See also Figure 2 The inside of the engaging hole 117 is inserted with an engaging tube 118, and the sealing tube 200 is threadedly connected to the plug body 100.

[0045] In a specific embodiment, please refer to Figure 2 The interpenetrating connection between the locking hole 117 and the locking cylinder 118 can strengthen the stable connection between the sealing cylinder 118 and the plug body 100. The threaded connection between the sealing cylinder 200 and the plug body 100 can also provide additional support and fixing force, thereby enhancing the stability of the overall connection and ensuring that the sealing plug will not loosen or fall off during operation.

[0046] The utility model provides a sealing plug for a pipe, and the specific use method is as follows:

[0047] The hexagonal nut 110 can provide a larger contact area, and the plug body 100 can be easily tightened inside the sealing cylinder 200 or loosened inside the sealing cylinder 200 by using a hexagonal wrench. The fixed connection between the limiting ring 111, the threaded column 112 and the cylinder 113 makes the overall structure of the plug body 100 firm and durable, and can effectively withstand external pressure and force. The cylinder 113 ensures the sealing performance, reduces the possibility of liquid or gas leakage, and improves the safety of the sealing plug. The matching of the mounting groove 210 inside the top of the sealing cylinder 200 and the limiting ring 111, as well as the matching of the threaded groove 211 opened in the middle and the threaded column 112, can ensure the sealing cylinder 200 and other components. The through hole 213 at the bottom of the sealing tube 200 reduces the pressure accumulation that may occur during use and ensures the normal operation of the sealing plug. The O-ring 115 can form an effective seal on the surface of the limiting groove 114 to prevent liquid or gas leakage, improve the sealing performance, and ensure the normal operation of the equipment or components. By gradually reducing the diameter of the components, the tightness and connection stability between the components can be ensured, making the overall structure more solid.

[0048] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for technical personnel in the field to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sealing plug for a pipe connection, characterized in that: include: A plug body (100), wherein a sealing cylinder (200) is movably provided outside the plug body (100); The plug body (100) comprises a hexagonal nut (110) at the top, the bottom end of the hexagonal nut (110) is fixedly connected to a limiting ring (111), the bottom end of the limiting ring (111) is fixedly connected to a threaded column (112), the bottom edge of the threaded column (112) is provided with a chamfer, and the bottom end of the threaded column (112) is fixedly connected to a cylinder (113); The top of the sealing cylinder (200) is provided with a mounting groove (210) adapted to the limiting ring (111), the middle of the sealing cylinder (200) is provided with a threaded groove (211) adapted to the threaded column (112), the bottom of the threaded groove (211) is integrally fixedly connected with a triangular plate (212) for blocking the chamfer, and the bottom of the sealing cylinder (200) is provided with a through hole (213) having a diameter greater than that of the cylinder (113).

2. A sealing plug for a pipe connection according to claim 1, characterized in that: A limiting groove (114) is provided on the surface of the limiting ring (111) close to the bottom end, and an O-type sealing ring (115) is sleeved on the surface of the limiting groove (114).

3. A sealing plug for a pipe connection according to claim 1, characterized in that: The hexagonal nut (110) and the limiting ring (111) are provided with an inner circular hole (116) extending to the middle of the threaded column (112); the bottom end of the threaded column (112) is provided with a snap-fitting hole (117) having a diameter smaller than the inner circular hole (116) and penetrating to the cylinder (113); the inner circular hole (116) and the snap-fitting hole (117) are communicated with each other.

4. A sealing plug for a pipe connection according to claim 1, characterized in that: The diameter of the hexagonal nut (110) is larger than that of the limiting ring (111), the diameter of the limiting ring (111) is larger than that of the threaded column (112), and the diameter of the threaded column (112) is larger than that of the cylinder (113).

5. The sealing plug for pipe connection according to claim 1, characterized in that: The bottom surface of the sealing cylinder (200) is provided with an arc groove, and the diameter of the top end of the sealing cylinder (200) is adapted to the hexagonal nut (110).

6. The sealing plug for pipe connection according to claim 3, characterized in that: A locking tube (118) is inserted and connected inside the locking hole (117), and the sealing tube (200) is threadedly connected to the plug body (100).

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