Anti-corrosion flange

Abstract

The utility model discloses a corrosion resistant flange relates to flange field, including flange body, the upper surface of flange body is provided with six through-hole, flange body passes through the through-hole and is connected with the protection structure, and the protection structure includes outer hexagonal cap and thread portion, the thread portion is provided on the inner wall of through-hole, the flange body passes through the through-hole and is connected with the flange body through the through-hole. The bottom of the outer hexagonal cap is integrally connected with a threaded sleeve, the threaded sleeve is in threaded connection with the threaded part, the through hole is composed of a large hole and a small hole, the threaded part is arranged in the large hole, and the large hole and the small hole enable the through hole to be in a T shape. According to the anti-corrosion flange, the bolts and the through holes can be protected after the anti-corrosion flange is installed, so that the phenomenon that the bolts, the through holes and the contact positions of the bolts and the flange body are corroded is effectively reduced, and the service life of the flange body is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of flange, in particular to a kind of corrosion-resistant flange. BACKGROUND

[0002] Flange is a kind of connecting piece used in the field of industry for connecting pipeline or installing equipment, usually circular, rectangular structure is main, flange body surface is provided with several through holes for penetrating bolt.

[0003] The Chinese patent with publication number CN204300563U provides a new type of flange with strong pressure-bearing capacity, good sealing performance and attractive appearance, which comprises a flange body and a tubular interface for connecting with an external pipeline, the tubular interface is integrally butt welded with the end face of the medium flow passage of the flange body, the medium flow passage of the flange body has the same inner diameter as the tubular interface, and the flange body is a flat plate type flange. The utility model integrally butt welds the end face of the medium flow passage of the tubular interface and the flange body, the medium flow passage of the flange body has the same inner diameter as the tubular interface, and the flange body is a flat plate type flange. The sealing performance of the flange is enhanced, the pressure-bearing capacity of the flange is improved, the work efficiency is improved, the material is saved, and the flange is more attractive.

[0004] However, the traditional flange does not have a structure for protecting the bolts after installation, and since the bolts will damage the corrosion-resistant coating on the flange surface when being screwed in, the connection between the bolts and the flange will be corroded, resulting in rusting, aging and other problems, which affect the service life. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a corrosion-resistant flange that can effectively solve the technical problem of affecting the service life of the flange due to the lack of protection structure for the bolt position in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0007] A corrosion-resistant flange, comprising a flange body, six through holes are formed in the upper surface of the flange body, a protection structure is connected to the flange body through the through holes, and the protection structure comprises an outer hexagonal cap and a threaded portion, the threaded portion is formed in the inner wall of the through hole, and a threaded sleeve is integrally connected to the bottom of the outer hexagonal cap, and the threaded sleeve is threadedly connected with the threaded portion.

[0008] As a further scheme of the utility model, the through hole is composed of a large hole and a small hole, the threaded portion is arranged in the large hole, and the large hole and the small hole make the through hole in T shape.

[0009] As a further scheme of the utility model, the top surface of the small hole is provided with a chamfer.

[0010] As a further scheme of the utility model, the bottom of the outer hexagonal cap is fixedly connected with an elastic ring on the inner side of the threaded sleeve.

[0011] As a further scheme of the utility model, the elastic ring is arranged in an X shape.

[0012] As a further scheme of the utility model, the edge of the flange body is provided with a chamfer, and the outer surface of the flange body is coated with an anticorrosion coating.

[0013] The utility model has the beneficial effects as follows:

[0014] By arranging the outer hexagonal cap and the threaded sleeve, the bolt and the through hole can be protected after installation, thereby effectively reducing the corrosion phenomenon of the bolt, the through hole and the contact position of the bolt and the flange body, and improving the service life of the flange body.

[0015] By arranging the elastic ring, the elastic ring can exist between the threaded sleeve and the bolt and between the bolt and the flange body after being screwed into the threaded sleeve, and opposite forces exist between the threaded sleeve and the bolt and between the bolt and the flange body, thereby reducing the thread stripping phenomenon of the threaded sleeve and the bolt. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an overall structure schematic view of the anti-corrosion flange of the utility model;

[0017] Figure 2 It is a threaded sleeve and flange split view of the anti-corrosion flange of the utility model;

[0018] Figure 3 It is a flange partial sectional view of the anti-corrosion flange of the utility model;

[0019] Figure 4 It is an installation demonstration view of the anti-corrosion flange of the utility model.

[0020] In the drawing: 1, flange body; 2, protection structure; 3, outer hexagonal cap; 4, threaded sleeve; 5, through hole; 6, threaded part; 7, elastic ring. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Embodiment one

[0023] In combination with Figures 1-4The utility model provides an anti-corrosion flange, including flange body 1, six through holes 5 are set up on the upper surface of flange body 1.

[0024] Refer to Figure 1 And Figure 2 Further, the flange body 1 is connected with the protection structure 2 through the through hole 5, and the protection structure 2 includes an external hexagonal cap 3 and a threaded portion 6, the threaded portion 6 is arranged on the inner wall of the through hole 5, the bottom of the external hexagonal cap 3 is integrally connected with a threaded sleeve 4, the threaded sleeve 4 is screwed with the threaded portion 6, the edge of the flange body 1 is provided with a chamfer, and the outer surface of the flange body 1 is coated with an anti-corrosion coating.

[0025] Specifically, when the flange body 1 is installed, the threaded sleeve 4 can be connected with the threaded portion 6 to block the through hole 5, thereby protecting the through hole 5 and the bolt, and the anti-corrosion coating can increase the corrosion resistance of the flange.

[0026] Example two

[0027] Refer to Figure 3 And on the basis of example one, further, the through hole 5 is composed of a large hole and a small hole, the threaded portion 6 is arranged in the large hole, and the large hole and the small hole make the through hole 5 in the shape of T, and the top surface of the small hole is provided with a chamfer.

[0028] Specifically, the large hole can hide the nut of the bolt inside after the bolt is installed, and the chamfer is arranged to facilitate the guiding effect when the bolt is inserted, and the operation is more convenient and fast.

[0029] Example three

[0030] Refer to Figure 4 And on the basis of example one and example two, further, the bottom of the external hexagonal cap 3 is fixedly connected with an elastic ring 7 on the inner side of the threaded sleeve 4, and the elastic ring 7 is arranged in the shape of X.

[0031] Specifically, after the elastic ring 7 is screwed into the threaded sleeve 4, it is pressed against the surface of the bolt, so that there is a counteracting force between the threaded sleeve 4 and the bolt and between the bolt and the flange body 1, thereby reducing the phenomenon of thread stripping of the threaded sleeve 4 and the bolt.

[0032] It should be noted that the utility model is an anti-corrosion flange, when in use, the flange body 1 is connected with another flange or equipment through external bolts penetrating the through hole 5, after connection, the end cap of the bolt is located in the large hole of the through hole 5, at this time, the threaded sleeve 4 is screwed into the through hole 5 using the external hexagonal cap 3, the threaded sleeve 4 is screwed with the threaded portion 6, after screwing, the threaded sleeve 4 cooperates with the external hexagonal cap 3 to protect the bolt, at the same time, the elastic ring 7 is stressed and extruded, so that there is a counteracting force between the threaded sleeve 4 and the bolt and between the bolt and the flange body 1, thereby reducing the phenomenon of thread stripping of the threaded sleeve 4 and the bolt.

[0033] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A corrosion-resistant flange, comprising a flange body (1), wherein the upper surface of the flange body (1) has six through holes (5), characterized in that: The flange body (1) is connected to a protective structure (2) through a through hole (5), and the protective structure (2) includes an external hexagonal cap (3) and a threaded part (6). The threaded part (6) is opened on the inner wall of the through hole (5). A threaded sleeve (4) is integrally connected to the bottom of the external hexagonal cap (3), and the threaded sleeve (4) is threadedly connected to the threaded part (6).

2. The corrosion-resistant flange according to claim 1, characterized in that: The through hole (5) is composed of a large hole and a small hole, and the threaded part (6) is set in the large hole. The large hole and the small hole make the through hole (5) T-shaped.

3. The corrosion-resistant flange according to claim 2, characterized in that: The top surface of the small hole is chamfered.

4. The corrosion-resistant flange according to claim 1, characterized in that: The bottom of the external hexagonal cap (3) is fixedly connected to an elastic ring (7) inside the threaded sleeve (4).

5. The corrosion-resistant flange according to claim 4, characterized in that: The elastic ring (7) is arranged in an X shape.

6. The corrosion-resistant flange according to claim 1, characterized in that: The flange body (1) has a chamfer at the edge and the outer surface of the flange body (1) is coated with an anti-corrosion coating.

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