CN214405047U

CN214405047U - Self-locking flange

Info

Publication number: CN214405047U
Application number: CN202022896056.3U
Authority: CN
Inventors: 朱海川; 王朝宇
Original assignee: Puchuan Fluid Equipment Wuxi Co Ltd
Current assignee: Puchuan Fluid Equipment Wuxi Co Ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-10-15
Anticipated expiration: 2030-12-03

Abstract

The utility model discloses a self-locking flange, include: a fluid inner hole is arranged at the center of the central part; and connecting portion, install outside the central part through locking thrust portion, be equipped with outer conical surface on the outer circumference of locking thrust portion, be equipped with on the inner wall of connecting portion with outer conical surface matched with hole conical surface still is equipped with interior cylinder surface on the inner wall of locking thrust portion, be equipped with on the outer circumference of central part with interior cylinder surface complex outer locating surface, the beneficial effects of the utility model are that: the original integral flange structure is converted into a plurality of replaceable standard parts, so that the cost of the integral flange is lower; meanwhile, the connecting part, the locking thrust part and the central part can realize smooth front and rear end faces, tight inner hole holding and reliable self-locking combination, so that the connecting part can be replaced in effect, and the attractiveness and absolute reliability of equipment are guaranteed.

Description

Self-locking flange

Technical Field

The utility model relates to a flange specifically is a auto-lock flange.

Background

Flanges, also known as flange flanges or beads, are used for connecting two pipes or devices, such as pumps and valves, at the inlet and outlet of the pipe or device. The flange is widely applied to fluid equipment.

The equipment with the same caliber has different flange standards on different occasions, such as national standard, American standard, German standard and Japanese standard; different pressure grades require different sizes and specifications; but also has the requirements of different materials in different application occasions. Therefore, if the equipment with the same caliber meets the requirements, the variety, specification, purchase quantity, storage position, fund and the like of the product can be greatly increased, and the price of the equipment can be greatly increased.

On a stainless steel multistage pump, the inlet and outlet of the pump adopt replaceable movable flanges limited by steel wire clamp springs to solve the problems, but the outer flange of the solution can freely slide before being connected and fixed, and the flange and equipment have obvious gaps. The freely movable flange has big striking hidden danger in transportation or equipment removal, easily leads to the flange structural damage or personnel to be injured.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a self-locking flange to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a self-locking flange comprising:

a fluid inner hole is arranged at the center of the central part; and

the connecting part is arranged outside the central part through the locking thrust part, an outer conical surface is arranged on the outer circumference of the locking thrust part, an inner hole conical surface matched with the outer conical surface is arranged on the inner wall of the connecting part, an inner cylindrical surface is further arranged on the inner wall of the locking thrust part, and an outer positioning surface matched with the inner cylindrical surface is arranged on the outer circumference of the central part.

As a further aspect of the present invention: the locking thrust part is provided with an opening.

As a further aspect of the present invention: and a convex snap ring is further arranged on the outer circumference of the central part and is used for being matched and positioned with the thrust surface on the end surface of the locking thrust part, and a sealing surface is arranged at the opening end of the central part.

As a further aspect of the present invention: the end of the connecting portion is provided with an outer plane, the outer plane is provided with a plurality of bolt holes, and the outer circumference of the connecting portion is further provided with an outer circular surface.

Compared with the prior art, the beneficial effects of the utility model are that: the original integral flange structure is converted into a plurality of replaceable standard parts, the central part needs to be in contact with a medium, the material requirement is high, the connecting part and the locking thrust part do not contact with the medium, and the connecting part and the locking thrust part can be made of materials with lower cost, so that the cost of the integral flange is lower; meanwhile, the connecting part, the locking thrust part and the central part can realize smooth front and rear end faces, tight inner hole holding and reliable self-locking combination, so that the connecting part can be replaced in effect, and the attractiveness and absolute reliability of equipment are guaranteed.

Drawings

Fig. 1 is a schematic structural view of a self-locking flange.

Fig. 2 is a cross-sectional view of a self-locking flange.

Fig. 3 is an exploded view of a latching flange.

In the figure: 1-a connecting part; 2-locking thrust part; 3-a central part;

1A-inner hole conical surface; 1B-to the outer plane; 1C-an outer circular surface; 1D-bolt hole;

2A-inner cylindrical surface; 2B-an outer conical surface; 2C-opening; a 2D-thrust face;

3A-external positioning surface; 3B-convex snap ring; 3C-fluid bore; 3D-sealing face.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Referring to fig. 1 to 3, in an embodiment of the present invention, a self-locking flange includes a central portion 3 and a connecting portion 1, wherein a fluid inner hole 3C is formed at a center of the central portion 3; the connecting part 1 is arranged outside the central part 3 through the locking thrust part 2, an outer conical surface 2B is arranged on the outer circumference of the locking thrust part 2, an inner hole conical surface 1A matched with the outer conical surface 2B is arranged on the inner wall of the connecting part 1, an inner cylindrical surface 2A is further arranged on the inner wall of the locking thrust part 2, and an outer positioning surface 3A matched with the inner cylindrical surface 2A is arranged on the outer circumference of the central part 3.

In this embodiment, the central portion 3 is used for being butted with equipment, the size is fixed, when flanges of different standards need to be replaced, only the connecting portion 1 needs to be replaced, the central portion 3 needs to be in contact with a medium, the material requirement is high, the connecting portion 1 and the locking thrust portion 2 do not contact with the medium, and the connecting portion can be made of a material with lower cost, so that the cost of the whole flange is lower.

In practical application, the inner cylindrical surface 2A of the locking thrust part 2 is matched with the outer positioning surface 3A of the central part 3 to realize radial positioning of the locking thrust part 2, and when the outer conical surface 2B of the locking thrust part 2 is matched with the inner hole conical surface 1A of the connecting part 1, self-locking can be realized (namely, the taper angle of the outer conical surface 2B is lower than the self-locking angle).

Referring to fig. 3, as a preferred embodiment of the present invention, an opening 2C is provided on the locking thrust portion 2.

In this embodiment, opening 2C's setting makes locking thrust portion 2 have certain reducing surplus, and opening 2C can grow so that locking thrust portion 2's installation promptly, also can reduce so that locking thrust portion 2 embraces tightly the outer locating surface 3A of central part 3, connecting portion 1, locking thrust portion 2 and central part 3 can realize that the front and back terminal surface levels like this, the hole embraces tightly and the auto-lock combines reliably, not only realizes in effect the removable of connecting portion 1, also guarantees simultaneously that the pleasing to the eye (unanimous with original whole outward appearance) and the absolute reliability of equipment.

Referring to fig. 3, as another preferred embodiment of the present invention, a convex snap ring 3B is further disposed on the outer circumference of the central portion 3, the convex snap ring 3B is used for positioning in cooperation with a thrust surface 2D on the end surface of the locking thrust portion 2, and a sealing surface 3D is disposed at the opening end of the central portion 3.

In this embodiment, the convex snap ring 3B is arranged to limit the locking thrust portion 2, when the thrust surface 2D of the locking thrust portion 2 collides with the convex snap ring 3B, the self-locking is realized by the outer conical surface 2B of the locking thrust portion 2 and the inner conical surface 1A of the connecting portion 1, and the locking thrust portion 2 holds the outer positioning surface 3A of the central portion 3 tightly.

Referring to fig. 3, as a preferred embodiment of the present invention, the end of the connecting portion 1 is provided with an outer plane 1B, the outer plane 1B is provided with a plurality of bolt holes 1D, and the outer circumference of the connecting portion 1 is further provided with an outer circular surface 1C. The outer plane 1B is a non-sealing spacing surface between flanges.

The above embodiment of the present invention discloses a self-locking flange, which converts the original integral flange structure into a plurality of replaceable standard parts, because the central portion 3 needs to contact with the medium, the material requirement is high, the connecting portion 1 and the locking thrust portion 2 do not contact with the medium, and can be made of a material with lower cost, so that the cost of the integral flange is lower; meanwhile, the connecting part 1, the locking thrust part 2 and the central part 3 can realize smooth front and back end surfaces, tight inner hole holding and reliable self-locking combination, so that the connecting part 1 can be replaced in effect, and the attractiveness and absolute reliability of equipment are guaranteed.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A self-locking flange, comprising:

a central part (3) provided with a fluid inner hole (3C); and

the connecting part (1) is installed outside the central part (3) through the locking thrust part (2), an outer conical surface (2B) is arranged on the outer circumference of the locking thrust part (2), an inner hole conical surface (1A) matched with the outer conical surface (2B) is arranged on the inner wall of the connecting part (1), an inner cylindrical surface (2A) is further arranged on the inner wall of the locking thrust part (2), and an outer positioning surface (3A) matched with the inner cylindrical surface (2A) is arranged on the outer circumference of the central part (3).

2. Self-locking flange according to claim 1, characterised in that the locking thrust (2) is provided with an opening (2C).

3. The self-locking flange according to claim 2, wherein a convex snap ring (3B) is further arranged on the outer circumference of the central portion (3), the convex snap ring (3B) is used for being matched and positioned with a thrust surface (2D) on the end surface of the locking thrust portion (2), and a sealing surface (3D) is arranged at the opening end of the central portion (3).

4. The self-locking flange according to claim 1, 2 or 3, wherein the end of the connecting portion (1) is provided with an outer plane (1B), the outer plane (1B) is provided with a plurality of bolt holes (1D), and the outer circumference of the connecting portion (1) is further provided with an outer circular surface (1C).