A hydraulic seal plug

Abstract

The utility model discloses a hydraulic sealing plug, including sealing cap and plug, the sealing cap one end is with the sealing end cap of sealing, the other end is open, the inside cavity is cylindrical, and the outside is polygon, the plug is located the inside cavity of sealing cap, and is fixed in sealing end cap inboard middle part, and the plug includes the straight plug of upper portion and the reducing plug of lower portion, the reducing plug outer wall is surrounded and is provided with the screw thread, the straight plug and the reducing plug junction are equipped with the sealing ring, the sealing ring is equipped with between the sealing ring of sealing end cap below and the plug of sealing cap inner wall, simple structure, convenient to use, have good sealing performance, and have longer life.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic sealing technology, specifically a hydraulic sealing plug. Background Technology

[0002] Plugs are used to block unnecessary openings in pipelines, serving a sealing function similar to blind flanges, end caps, and pipe caps. Hydraulic plugs are used in hydraulic systems to prevent fluid from leaking into the system through unnecessary openings, and also to prevent external fluid from leaking into the system through unnecessary openings. Traditional hydraulic plugs either have poor sealing performance or, even if they solve the sealing problem, cause significant rotational friction between the seal and the valve seat, easily leading to seal damage or failure. Summary of the Invention

[0003] The purpose of this invention is to provide a hydraulic sealing plug to solve the problems mentioned in the background art.

[0004] This utility model provides a hydraulic sealing plug, including a sealing cap and a plug. One end of the sealing cap is sealed with a sealing end cap, and the other end is open. The internal cavity is cylindrical, and the external shape is polygonal. The plug is located in the internal cavity of the sealing cap and is fixed to the middle of the inner side of the sealing end cap. The plug includes an upper straight plug and a lower variable diameter plug. The outer wall of the variable diameter plug is threaded. A sealing ring is provided at the junction of the straight plug and the variable diameter plug. A sealing ring is provided below the sealing end cap between the inner wall of the sealing cap and the plug.

[0005] The outer wall of the sealing cap is provided with anti-slip texture.

[0006] The sealing end cap and the sealing cap are integrated.

[0007] The straight plug is cylindrical, while the variable-diameter plug is a frustum-shaped cone with a diameter that gradually decreases from top to bottom.

[0008] The variable diameter plug has two openings along its lower longitudinal direction. The two openings are arranged symmetrically.

[0009] The opening occupies 1 / 8 to 1 / 6 of the outer diameter of the plug.

[0010] The present invention provides a hydraulic sealing plug, the advantages of which are that it is provided with a straight plug and a variable diameter plug. The outer wall of the variable diameter plug is surrounded by threads, and the lower part of the variable diameter plug has an opening along the longitudinal direction. The layers of threads can increase the sealing effect. The opening provides the lower part of the plug with slight elasticity and tension, which can reduce the rotational friction between the plug and the valve body during use. The sealing ring and the straight plug are provided to increase the sealing effect. After the lower variable diameter plug has a first sealing effect, the straight plug can be shortened, which has both a good sealing effect and avoids greater friction. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0012] Figure 2 This is a cross-sectional view of one embodiment of the present invention;

[0013] In the diagram: 1. Sealing cap; 2. Anti-slip texture; 3. Plug; 4. Sealing ring; 5. Sealing ring; 6. Reducing plug; 7. Thread. Detailed Implementation

[0014] The hydraulic sealing plug provided by this utility model will be described in detail below with reference to the accompanying drawings and an embodiment.

[0015] Example

[0016] Reference Figures 1-2 This embodiment of a hydraulic sealing plug includes a sealing cap 1 and a plug 3. The sealing cap 1 has a sealing end with a sealing end cap at one end and an open end. The internal cavity is cylindrical and the external cavity is polygonal. The plug 3 is located in the internal cavity of the sealing cap 1 and is fixed to the middle of the inner side of the sealing end cap. The plug includes an upper straight plug and a lower variable diameter plug 6. The outer wall of the variable diameter plug 6 is surrounded by threads 7. The layers of threads can increase the sealing effect. A sealing ring 5 is provided at the junction of the straight plug and the variable diameter plug 6. A sealing ring 4 is provided below the sealing end cap between the inner wall of the sealing cap and the plug.

[0017] The outer wall of the sealing cap 1 is provided with anti-slip texture 2. The outer surface of the sealing cap 1 is polygonal and has anti-slip texture. The anti-slip texture is arranged along the longitudinal direction, making it convenient to disassemble and use under force.

[0018] The sealing end cap and the sealing cap are integrated.

[0019] The straight plug is cylindrical, and the variable-diameter plug 6 is a frustum-shaped cone with a diameter that gradually decreases from top to bottom. After the lower variable-diameter plug has a first sealing effect, the straight plug can be shortened, which not only has a good sealing effect but also avoids greater friction.

[0020] The variable diameter plug has two openings 4 along its lower longitudinal direction. The two openings 4 are arranged symmetrically.

[0021] The opening occupies 1 / 8 to 1 / 6 of the outer diameter of the plug. The opening provides the lower part of the plug with slight elasticity and tension, which can reduce the rotational friction between the plug and the valve body during use.

Claims

1. A hydraulic sealing plug, characterized in that: The device includes a sealing cap and a plug. The sealing cap has a sealed end with a sealing end cap at one end and an open end. The internal cavity is cylindrical and the external cavity is polygonal. The plug is located in the internal cavity of the sealing cap and is fixed to the middle of the inner side of the sealing end cap. The plug includes an upper straight plug and a lower reducing plug. The outer wall of the reducing plug is threaded. A sealing ring is provided at the junction of the straight plug and the reducing plug. A sealing ring is provided below the sealing end cap between the inner wall of the sealing cap and the plug.

2. The hydraulic sealing plug according to claim 1, characterized in that: The outer wall of the sealing cap is provided with anti-slip texture.

3. A hydraulic sealing plug according to claim 1, characterized in that: The sealing end cap and the sealing cap are integrated.

4. A hydraulic sealing plug according to claim 1, characterized in that: The straight plug is cylindrical, while the variable-diameter plug is a frustum-shaped cone with a diameter that gradually decreases from top to bottom.

5. A hydraulic sealing plug according to claim 1, characterized in that: The variable diameter plug has two openings along its lower longitudinal direction. The two openings are arranged symmetrically.

6. A hydraulic sealing plug according to claim 5, characterized in that: The opening occupies 1 / 8 to 1 / 6 of the outer diameter of the plug.

Images