High-strength corrosion-resistant flange part

Abstract

The utility model discloses a high-strength corrosion-resistant flange part which comprises a flange plate. The flange plate is formed by engineering plastic in an injection molding mode, and a metal core body is embedded in the flange plate. A group of mounting holes are uniformly formed in the metal core body along the circumferential direction at intervals; a set of A notches are evenly formed in one side face of the metal core body in the circumferential direction at intervals, and an A limiting table is formed between every two adjacent A notches. A set of B notches are formed in the other side face of the metal core body in the circumferential direction at intervals, and a B limiting table is formed between every two adjacent B notches. The A limiting table and the B limiting table are symmetrically arranged on the two sides of the metal core body, and the mounting hole penetrates through the A limiting table and the B limiting table. The flange part is composed of the flange plate and the metal core body arranged in the flange plate, the flange plate is formed by injection molding of engineering plastics, and the mounting holes are formed in the metal core body, so that the flange part has high mechanical strength and corrosion resistance.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, specifically to a high-strength corrosion-resistant flange part. Background Technology

[0002] A flange, also called a flange plate or flange, is used for connecting pipe ends; flanges are also used on equipment inlets and outlets to connect two pieces of equipment, such as gearbox flanges. Flanges have holes for bolts to pass through; typically, it refers to a disc-shaped metal body with several holes around its perimeter for fixing other components. Current flange connections involve first fixing two pipes, fittings, or equipment to separate flange plates, then placing a flange gasket between the two flange plates and tightening them together with bolts to complete the connection. Flange connections are convenient to use, can withstand high pressure, and are an important connection method in pipeline construction, currently widely used in industrial pipelines.

[0003] Traditional flanges are mostly made of ordinary carbon steel or low alloy steel. Although they meet basic connection requirements to a certain extent, these flanges are not strong enough and have poor corrosion resistance. They are prone to damage after a period of use and cannot meet the requirements for long-term use. Especially in extreme environments, such as high temperature, high pressure and strong corrosive media, the performance of traditional flanges often fails to meet expectations and is prone to leakage, corrosion and other problems, which seriously affect the safe operation and service life of equipment. Utility Model Content

[0004] This invention provides a high-strength, corrosion-resistant flange part to overcome the aforementioned problems in the prior art. The high-strength, corrosion-resistant flange part of this invention consists of a flange and a metal core disposed inside the flange, possessing high mechanical strength. The flange is injection molded from engineering plastic, giving the flange part high corrosion resistance. Furthermore, mounting holes are located on the metal core, ensuring that when two adjacent flange parts are connected, the bolts contact the metal core, resulting in high installation stability. In addition, multiple slots are formed on both sides of the metal core, facilitating the flow of engineering plastic on the surface of the metal core during injection molding. This allows the engineering plastic to better penetrate and fill, forming a tight bond with the metal core surface during curing. This improves the bonding strength between the metal core and the flange, preventing relative rotation or axial displacement between the metal core and the flange during use.

[0005] The technical solution of this application is as follows:

[0006] A high-strength, corrosion-resistant flange component, including a flange; the flange is injection molded from engineering plastic, and a metal core is embedded inside the flange; a set of mounting holes are spaced apart along the circumferential direction on the metal core; a set of A slots are spaced apart along the circumferential direction on one side of the metal core, and an A limiting platform is formed between two adjacent A slots; a set of B slots are spaced apart along the circumferential direction on the other side of the metal core, and a B limiting platform is formed between two adjacent B slots; the A limiting platform and the B limiting platform are symmetrically arranged on both sides of the metal core, and the mounting holes penetrate the A limiting platform and the B limiting platform.

[0007] Compared with existing technologies, the high-strength corrosion-resistant flange parts of this utility model have high mechanical strength by setting a metal core inside and opening mounting holes on the metal core. Moreover, when two adjacent flange parts are connected, the bolts are in contact with the metal core, resulting in high installation firmness. Secondly, the flange part is made of a flange plate injection molded from engineering plastic, which gives the flange part high corrosion resistance. In addition, multiple slots are opened on both sides of the metal core to facilitate the flow of engineering plastic on the surface of the metal core during injection molding. This allows the engineering plastic to better penetrate and fill, and form a tight bond with the surface of the metal core during curing. This improves the bonding strength between the metal core and the flange plate, prevents the metal core and the flange plate from rotating relative to each other during use, and ensures high reliability.

[0008] As an optimization, the aforementioned high-strength corrosion-resistant flange component features an annular protrusion on the inner ring surface of the metal core. This annular protrusion design increases the contact area between the metal core and the engineering plastic, thereby further enhancing the bonding strength between the metal core and the flange. Furthermore, when the metal core and flange are injection molded as a single unit, the larger contact area allows for better coordinated stress distribution, thus improving the overall strength and load-bearing capacity of the flange component and extending its service life.

[0009] Furthermore, the annular protrusion is located at the exact center of the inner annular surface of the metal core. In this case, the thickness of the engineering plastic on both sides of the annular protrusion is uniform, the force on the annular protrusion is relatively even, and the metal core and engineering plastic are less likely to separate.

[0010] As an optimization, the aforementioned high-strength corrosion-resistant flange parts have two A-grooves and two B-grooves between two adjacent mounting holes. While ensuring the strength of the metal core, providing multiple grooves helps reduce the overall weight of the flange parts.

[0011] Furthermore, the A and B slots are trapezoidal slots, narrow at the top and wide at the bottom. The trapezoidal shape helps to distribute stress more evenly, reducing stress concentration points and thus improving the overall structural stability.

[0012] As an optimization, in the aforementioned high-strength corrosion-resistant flange parts, annular sealing grooves are respectively provided on both sides of the flange, and the annular sealing grooves are used to install sealing rings. In use, sealing rings can be installed in the annular sealing grooves to improve the sealing performance between two interconnected flange parts, which is suitable for the connection of components that require leak prevention; moreover, with annular sealing grooves on both sides, it is not necessary to distinguish which side is connected to the pipe and which side is connected to the flange part during assembly, thus providing good flexibility in use.

[0013] Furthermore, an annular sealing groove is formed on each side of the flange, located on both sides of the A and B limiting platforms. Thus, each side has two annular sealing grooves, providing a double sealing effect.

[0014] As an optimization, in the aforementioned high-strength corrosion-resistant flange parts, the metal core is integrally formed from stainless steel. Stainless steel has excellent corrosion resistance, ease of processing, and environmental performance, and also boasts high mechanical strength, making it suitable for harsh environments. Furthermore, the integral forming of the metal core facilitates manufacturing and implementation. Alternatively, the metal core can be a stainless steel casting. Manufactured through a casting process, the metal core has a short processing time, high metal utilization, and can meet the needs of mass production, thus helping to reduce product costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the high-strength corrosion-resistant flange component in the embodiments of this application;

[0016] Figure 2 yes Figure 1 A top view of a high-strength, corrosion-resistant flange component.

[0017] Figure 3 yes Figure 2 Sectional view along line AA in the middle;

[0018] Figure 4 This is a schematic diagram of the structure of the metal core in the embodiments of this application.

[0019] The markings in the attached diagram are: 1-flange, 11-cylindrical protrusion, 101-sealing groove; 2-metal core, 21-A limiting platform, 22-B limiting platform, 23-annular protrusion, 201-mounting hole, 202-A groove, 203-B groove. Detailed Implementation

[0020] The present application will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present application. Contents not described in detail in the following embodiments are all common knowledge in the art.

[0021] See Figures 1 to 4The high-strength corrosion-resistant flange part in this application includes a flange 1; the flange 1 is injection molded from engineering plastic (in this embodiment, specifically reinforced nylon PA66), and a metal core 2 is embedded inside the flange 1; the metal core 2 is integrally molded from stainless steel; a set of mounting holes 201 are spaced apart along the circumferential direction on the upper edge of the metal core 2; a set of A slots 202 are evenly spaced along the circumferential direction on one side of the metal core 2, and an A limiting platform is formed between two adjacent A slots 202. 21; A set of B slots 203 are evenly spaced along the circumference on the other side of the metal core 2, and a B limiting platform 22 is formed between two adjacent B slots 203; the A limiting platform 21 and the B limiting platform 22 are symmetrically arranged on both sides of the metal core 2 (correspondingly, the A slots 202 and the B slots 203 are also symmetrically arranged on both sides of the metal core 2), and the mounting hole 201 penetrates the A limiting platform 21 and the B limiting platform 22 (in this embodiment, the surfaces of the A limiting platform 21 and the B limiting platform 22 are flush with the surface of the flange 1).

[0022] The high-strength corrosion-resistant flange component of this application consists of a flange 1 and a metal core 2 disposed inside the flange 1. Mounting holes 201 are located on the metal core 2, ensuring that when the two flange components are connected, the bolts contact the metal core 2, resulting in a high degree of installation security. Secondly, the flange 1 is injection molded from engineering plastic, while the metal core 2 is integrally molded from stainless steel, resulting in lower manufacturing costs and ensuring high mechanical strength of the flange component. Both engineering plastic and stainless steel possess excellent corrosion resistance, thus enhancing the corrosion resistance of the flange component. Furthermore, multiple slots are formed on both sides of the metal core 2. During injection molding, the engineering plastic fills these slots, forming a tight bond with the surface of the metal core 2, thereby increasing the bonding strength between the metal core 2 and the flange 1 and preventing relative rotation or axial displacement of the metal core 2 and flange 1 during use. In practical applications, a columnar protrusion 11 can also be provided in the center of one side of the flange 1 for connection to pipes, fittings, or equipment.

[0023] Example:

[0024] In this embodiment, an annular protrusion 23 is provided on the inner ring surface of the metal core 2. The design of the annular protrusion 23 can increase the contact area between the metal core 2 and the engineering plastic, thereby further improving the bonding force between the metal core 2 and the flange 1; moreover, when the metal core 2 and the flange 1 are injection molded as one piece, the larger contact area allows the two to better cooperate in bearing the force, thereby improving the strength and load-bearing capacity of the entire flange part and extending the service life of the flange part.

[0025] Furthermore, the annular protrusion 23 is located at the exact center of the inner ring surface of the metal core 2. At this point, the thickness of the engineering plastic on both sides of the annular protrusion 23 is uniform, the force on the annular protrusion 23 is relatively even, and the metal core 2 is less likely to peel off from the engineering plastic.

[0026] In this embodiment, two A slots 202 and two B slots 203 are provided between two adjacent mounting holes 201. Providing multiple slots while ensuring the strength of the metal core 2 helps to reduce the overall weight of the flange parts.

[0027] Furthermore, the A slot 202 and B slot 203 are trapezoidal slots that are narrow at the top and wide at the bottom. The shape of the trapezoidal slots helps to distribute stress more evenly, reduce stress concentration points, and thus improve the stability of the overall structure.

[0028] In this embodiment, an annular sealing groove 101 is provided on both sides of the flange 1, located at the A limiting platform 21 and the B limiting platform 22. In use, a sealing ring can be installed in the annular sealing groove 101 to improve the sealing performance between the two interconnected flange parts, suitable for connecting components requiring leak prevention; moreover, the design of two annular sealing grooves 101 provides a double sealing effect, resulting in good sealing performance.

[0029] In this embodiment, the metal core 2 is a stainless steel casting. The metal core 2 is manufactured through a casting process, which has a short processing time, high metal utilization rate, and can meet the needs of mass production, thus helping to reduce product costs.

[0030] The foregoing general description of the utility model and its specific embodiments should not be construed as limiting the technical solution of the utility model. Those skilled in the art, based on the disclosure of this application, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or specific embodiments (including examples) without departing from the constituent elements of the utility model, to form other technical solutions within the protection scope of this application.

Claims

1. A high-strength corrosion-resistant flange component, comprising a flange (1); characterized in that: The flange (1) is injection molded from engineering plastic, and a metal core (2) is embedded inside the flange (1); a set of mounting holes (201) are spaced apart along the circumference of the metal core (2); a set of A slots (202) are spaced apart along the circumference of one side of the metal core (2), and an A limiting platform (21) is formed between two adjacent A slots (202); a set of B slots (203) are spaced apart along the circumference of the other side of the metal core (2), and a B limiting platform (22) is formed between two adjacent B slots (203); the A limiting platform (21) and the B limiting platform (22) are symmetrically arranged on both sides of the metal core (2), and the mounting holes (201) penetrate the A limiting platform (21) and the B limiting platform (22).

2. The high-strength corrosion-resistant flange part according to claim 1, characterized in that: The inner ring surface of the metal core (2) is provided with an annular protrusion (23).

3. The high-strength corrosion-resistant flange part according to claim 2, characterized in that: The annular protrusion (23) is located at the center of the inner annular surface of the metal core (2).

4. The high-strength corrosion-resistant flange part according to claim 1, characterized in that: Two A slots (202) and two B slots (203) are provided between two adjacent mounting holes (201).

5. The high-strength corrosion-resistant flange part according to claim 4, characterized in that: The A slot (202) and B slot (203) are trapezoidal slots that are narrow at the top and wide at the bottom.

6. The high-strength corrosion-resistant flange part according to claim 1, characterized in that: The flange (1) has annular sealing grooves (101) on its two sides, which are used to install sealing rings.

7. The high-strength corrosion-resistant flange part according to claim 6, characterized in that: On the flange (1), an annular sealing groove (101) is provided on both sides of the A limiting platform (21) and the B limiting platform (22).

8. The high-strength corrosion-resistant flange part according to any one of claims 1 to 7, characterized in that: The metal core (2) is integrally formed from stainless steel.

9. The high-strength corrosion-resistant flange part according to claim 8, characterized in that: The metal core (2) is a stainless steel casting.

Images