Corrosion-resistant explosion-proof plug

Abstract

The utility model relates to a corrosion-resistant explosion-proof plug, which belongs to the technical field of plugs and comprises a plug body, a sealing ring is fixedly connected to the outer side of the plug body, and a reinforcing component for reinforcing sealing performance is arranged in the plug body. The strengthening assembly comprises an oil cavity formed in the plug body, an elastic telescopic piece fixedly connected to the inner top wall of the oil cavity, a piston piece fixedly connected to the bottom end of the elastic telescopic piece, and a sliding shaft fixedly connected between the left side wall and the right side wall in the oil cavity. The two connecting pieces are connected to the outer side of the sliding shaft in a sliding mode, and the extrusion shafts are fixedly connected to the opposite sides of the two connecting pieces respectively. According to the corrosion-resistant explosion-proof plug, pressure is transmitted through hydraulic oil, uniform stress of the sealing ring is achieved, it is ensured that the sealing face is tightly attached to the inner wall of a pipeline, the sealing pressure can be automatically adjusted according to the change of external pressure through the linkage design of the elastic telescopic part and the piston part, pressure fluctuation is adapted, and the overall structural strength of the plug is enhanced through the reinforcing frame.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plug, specifically is a kind of corrosion-resistant explosion-proof plug. BACKGROUND

[0002] In industrial pipeline system, plug is widely used in the closure of pipeline end or equipment interface as an important sealing element.

[0003] Plug usually adopts simple mechanical sealing structure, such as threaded connection or flange connection, relies on external fastening force to realize sealing. However, this structure has the following problems in high pressure, high corrosion or explosive environment: plug is prone to leakage due to aging or deformation of sealing material when pressure fluctuates or temperature changes, and in high pressure or explosive environment, plug lacks effective pressure release and automatic adjustment mechanism, which has safety hazard. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a corrosion-resistant explosion-proof plug, which has the advantages of enhanced sealing performance, solves the problems of insufficient sealing performance and limited explosion-proof performance.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A corrosion-resistant explosion-proof plug, comprising a plug body, a sealing ring fixedly connected to the outer side of the plug body, and a reinforcing assembly arranged inside the plug body for reinforcing the sealing performance.

[0007] The reinforcing assembly comprises an oil cavity formed in the inside of the plug body, an elastic expansion piece fixedly connected to the inner top wall of the oil cavity, a piston piece fixedly connected to the bottom end of the elastic expansion piece, a sliding shaft fixedly connected between the left and right side walls of the oil cavity, two connecting pieces slidingly connected to the outer side of the sliding shaft, and two extrusion shafts fixedly connected to the opposite sides of the two connecting pieces, respectively.

[0008] Further, a piston channel adapted to the piston piece is formed below the inside of the plug body, the piston piece is slidingly connected to the inner side of the piston channel, and the inside of the oil cavity is provided with hydraulic oil.

[0009] Further, the number of sliding shafts is two, and the two sliding shafts are arranged in sequence along the front-rear direction of the oil cavity, and the elastic expansion piece is located between the opposite sides of the two sliding shafts.

[0010] Further, sliding holes adapted to the sliding shafts are formed in the front and rear sides of the connecting piece, respectively, and the two sliding shafts are slidingly connected to the inner sides of the corresponding sliding holes, respectively, and the two connecting pieces are located on the left and right sides of the elastic expansion piece, respectively.

[0011] Further, the number of the extrusion shafts on the left and right sides is two, and the two extrusion shafts on the same side are arranged in sequence along the up-down direction of the connecting piece.

[0012] Further, the left and right sides of the sealing ring are provided with accommodating grooves matched with the extrusion shafts, and the end of the extrusion shaft away from the corresponding connecting piece penetrates through the corresponding side wall of the oil cavity and extends into the corresponding accommodating groove.

[0013] Further, the top of the plug body is fixedly connected with a connecting block, and the outer surface of the connecting block is provided with threads, and the top of the connecting block is fixedly connected with a handle.

[0014] Further, the outer side of the plug body is fixedly connected with a reinforcing frame, and the reinforcing frame is located below the sealing ring.

[0015] Compared with the prior art, the anti-corrosion explosion-proof plug has the following advantages

[0016] Beneficial effects:

[0017] The anti-corrosion explosion-proof plug transmits pressure through hydraulic oil, realizes uniform stress of the sealing ring, ensures that the sealing surface is tightly attached to the inner wall of the pipeline, and the linkage design of the elastic expansion element and the piston element can automatically adjust the sealing pressure according to the change of external pressure, adapt to pressure fluctuation, and the reinforcing frame enhances the overall structural strength of the plug, and further improves the explosion-proof capability. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a sectional view of the structure of the utility model;

[0019] Fig. 2 is a front view of the structure of the utility model;

[0020] Fig. 3 is a perspective view of the plug body in the structure of the utility model.

[0021] In the drawing: 1, plug body; 2, sealing ring; 3, oil cavity; 4, elastic expansion element; 5, piston element; 6, sliding shaft; 7, connecting piece; 8, extrusion shaft; 9, connecting block; 10, handle; 11, reinforcing frame. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] Please refer toFigs. 1-3 The corrosion-resistant explosion-proof plug in the embodiment comprises a plug body 1, a sealing ring 2 fixedly connected to the outer side of the plug body 1, and a reinforcing assembly arranged in the plug body 1.

[0024] Please refer to Fig. 1 In the embodiment, the reinforcing assembly comprises an oil cavity 3 arranged in the plug body 1, an elastic expansion piece 4 fixedly connected to the inner top wall of the oil cavity 3, a piston piece 5 fixedly connected to the bottom end of the elastic expansion piece 4, a sliding shaft 6 fixedly connected between the left and right side walls of the oil cavity 3, two connecting pieces 7 slidingly connected to the outer side of the sliding shaft 6, and two extrusion shafts 8 fixedly connected to the opposite sides of the two connecting pieces 7, respectively.

[0025] Specifically, a piston channel adapted to the piston piece 5 is arranged in the lower part of the plug body 1, and the piston piece 5 is slidingly connected to the inner side of the piston channel. The inside of the oil cavity 3 is provided with hydraulic oil.

[0026] It should be noted that the inside of the oil cavity 3 is filled with hydraulic oil, which can uniformly transmit pressure and automatically adjust the sealing effect as a pressure transmission medium. The material of the piston piece 5 needs to have corrosion resistance and high hardness, such as stainless steel or ceramic coating material.

[0027] Specifically, the number of the sliding shafts 6 is two, and the two sliding shafts 6 are arranged in the front-rear direction of the oil cavity 3 in sequence. The elastic expansion piece 4 is located between the opposite sides of the two sliding shafts 6. The front and rear sides of the inside of the connecting piece 7 are both provided with sliding holes adapted to the sliding shafts 6. The two sliding shafts 6 are slidingly connected to the inner sides of the corresponding sliding holes, respectively. The two connecting pieces 7 are located on the left and right sides of the elastic expansion piece 4, respectively.

[0028] It should be noted that the number of the sliding shafts 6 is two, and the two sliding shafts 6 are arranged in the front-rear direction of the oil cavity 3 to ensure the sliding stability of the connecting piece 7.

[0029] Specifically, the number of the extrusion shafts 8 on the left and right sides is two, respectively, and the two extrusion shafts 8 on the same side are arranged in the up-down direction of the connecting piece 7 in sequence.

[0030] It should be noted that the number of the extrusion shafts 8 is two on each side, and the two extrusion shafts 8 are arranged in the up-down direction of the connecting piece 7 to ensure that the sealing ring 2 is uniformly stressed.

[0031] Specifically, the left and right sides of the inside of the sealing ring 2 are both provided with accommodating grooves adapted to the extrusion shafts 8. One end of the extrusion shaft 8 away from the corresponding connecting piece 7 penetrates through the corresponding side wall of the oil cavity 3 and extends to the inside of the corresponding accommodating groove.

[0032] It should be noted that the accommodating grooves in the inside of the sealing ring 2 cooperate with the extrusion shafts 8. The extrusion shafts 8 push the sealing ring 2 to expand outward to achieve sealing.

[0033] Specifically, the top of the plug body 1 is fixedly connected with a connecting block 9, and the outer surface of the connecting block 9 is provided with threads.

[0034] It should be noted that the connecting block 9 is provided with threads on the outer surface, which facilitates installation and disassembly, and the handle 10 provides operation convenience.

[0035] Specifically, the outer side of the plug body 1 is fixedly connected with a reinforcing frame 11, and the reinforcing frame 11 is located below the sealing ring 2.

[0036] It should be noted that the reinforcing frame 11 is used to enhance the structural strength of the plug to prevent deformation.

[0037] The working principle of the above embodiment is as follows:

[0038] In the pressureless state, the elastic expansion piece 4 provides an initial elastic force, which pushes the piston piece 5 to move downward, the hydraulic oil pressure is low, and the extrusion shaft 8 does not completely push the sealing ring 2, when the pressure in the pipeline acts on the plug body 1, the pressure is transmitted to the piston piece 5, which pushes the piston piece 5 to move upward, when the piston piece 5 moves upward, the elastic expansion piece 4 is compressed, further enhancing the pressure of the hydraulic oil, the hydraulic oil in turn pushes the connecting piece 7 to slide along the slide shaft 6, so that the vertical movement of the piston piece 5 is converted into horizontal movement, the extrusion shaft 8 is driven by the connecting piece 7 to move outward, pushing the sealing ring 2 to expand outward, tightly fitting the inner wall of the pipeline, when the external pressure changes, the pressure is transmitted through the piston piece 5, so that the pressure of the hydraulic oil changes, in turn, the pushing force of the extrusion shaft 8 is automatically adjusted, ensuring that the sealing ring 2 is always tightly fitted to the inner wall of the pipeline.

[0039] The installation method, connection method or setting method disclosed in the embodiment are all common mechanical connection methods, as long as they can achieve the beneficial effects.

[0040] It should be noted that in this paper, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the application.

[0041] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0042] While the embodiments of the present application have been shown and described with respect to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. Therefore, the scope of the application should not be limited by the embodiments, but should be defined only in accordance with the following claims and their equivalents.

Claims

1. A corrosion-resistant explosion-proof plug comprising a plug body (1), characterized in that: The outer side of the plug body (1) is fixedly connected with a sealing ring (2), and the inside of the plug body (1) is provided with a reinforcing assembly for reinforcing the sealing performance; The reinforcing assembly comprises an oil cavity (3) formed in the inside of the plug body (1), an elastic expansion piece (4) fixedly connected to the inner top wall of the oil cavity (3), a piston piece (5) fixedly connected to the bottom end of the elastic expansion piece (4), a sliding shaft (6) fixedly connected between the left and right side walls of the oil cavity (3), two connecting pieces (7) slidingly connected to the outside of the sliding shaft (6), and extrusion shafts (8) fixedly connected to the opposite sides of the two connecting pieces (7) respectively.

2. The corrosion-resistant and explosion-proof plug according to claim 1, characterized in that: The inside of the plug body (1) is provided with a piston channel adapted to the piston piece (5) below, the piston piece (5) is slidingly connected to the inside of the piston channel, and the inside of the oil cavity (3) is provided with hydraulic oil.

3. The corrosion-resistant and explosion-proof plug according to claim 1, characterized in that: The number of the sliding shafts (6) is two, and the two sliding shafts (6) are arranged in sequence along the front-rear direction of the oil cavity (3), and the elastic expansion piece (4) is located between the opposite sides of the two sliding shafts (6).

4. The corrosion-resistant and explosion-proof plug according to claim 1, characterized in that: The inside of the connecting piece (7) is provided with sliding holes adapted to the sliding shafts (6) on the front and rear sides, and the two sliding shafts (6) are slidingly connected to the inside of the corresponding sliding holes, and the two connecting pieces (7) are located on the left and right sides of the elastic expansion piece (4) respectively.

5. The corrosion-resistant explosion-proof plug of claim 1, wherein: The number of the extrusion shafts (8) on the left and right sides is two, and the two extrusion shafts (8) on the same side are arranged in sequence along the up-down direction of the connecting piece (7).

6. The corrosion-resistant explosion-proof plug of claim 1, wherein: The inside of the sealing ring (2) is provided with accommodating grooves adapted to the extrusion shafts (8) on the left and right sides, and one end of the extrusion shaft (8) away from the corresponding connecting piece (7) penetrates through the corresponding side wall of the oil cavity (3) and extends into the corresponding accommodating groove.

7. The corrosion-resistant explosion-proof plug of claim 1, wherein: The top of the plug body (1) is fixedly connected with a connecting block (9), and the outer surface of the connecting block (9) is provided with threads, and the top of the connecting block (9) is fixedly connected with a handle (10).

8. The corrosion-resistant explosion-proof plug of claim 1, wherein: The outer side of the plug body (1) is fixedly connected with a reinforcing frame (11), and the reinforcing frame (11) is located below the sealing ring (2).

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