Corrosion-resistant glass fiber reinforced plastic flange

Abstract

The utility model discloses a corrosion-resistant glass fiber reinforced plastic flange, and relates to the technical field of glass fiber reinforced plastic flanges. The sealing device comprises a first flange plate, the top of the first flange plate is communicated with a connecting seat, the top of the connecting seat is communicated with a first connecting pipe, the bottom of the first flange plate is fixedly connected with a sealing seat, the surface of the sealing seat is fixedly connected with a limiting block, and the bottom of the first flange plate is provided with a second flange plate. The first flange plate and the first connecting pipe are connected through the connecting base, the strength of the connecting position of the first connecting pipe and the first flange plate can be effectively improved, and the phenomenon that the flange cracks and fractures due to the fact that large pressure is generated when the flange bears pressure is avoided; and the first flange plate and the second flange plate can be rapidly connected, the connecting stability is guaranteed, meanwhile, dislocation is avoided, and the installation efficiency is not affected, and the using effect of the glass fiber reinforced plastic flange is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of glass fiber reinforced plastic flanges, in particular to a corrosion-resistant glass fiber reinforced plastic flange. Background Art

[0002] Flanges are parts that connect pipes to pipes and pipes to valves. They are connected to the ends of pipes and are also used as flanges on equipment inlets and outlets. There are holes on the flanges, and bolts are used to fix the connection between the two pipes. FRP flanges have excellent corrosion resistance, anti-aging and hydraulic characteristics, quick installation and low overall investment, making them the best choice for pipe network connections in the chemical industry and drainage projects.

[0003] The strength and rigidity of FRP flanges are much lower than those of steel flanges. They have low compressive strength and weak impact resistance. When the flange is under pressure, a large pressure is easily generated at the connection between the flange body and the flange plate, causing cracks and breakage in the flange.

[0004] Flanges are affected by factors such as medium corrosion, erosion, temperature, pressure, vibration, etc., and leakage problems are inevitable. Aging of sealing components and improper installation and tightening can easily cause flange leakage.

[0005] To this end, we provide a corrosion-resistant fiberglass flange to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a corrosion-resistant fiberglass flange, which has the advantages of improving the flange connection strength and improving the sealing performance, and solves the problem that the flange is prone to cracks and breakages due to the high pressure generated at the connection between the flange pipe body and the flange plate in the prior art, and is inevitably affected by factors such as medium corrosion, erosion, temperature, pressure, vibration, etc., and leakage will inevitably occur.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model discloses a corrosion-resistant glass fiber reinforced plastic flange, comprising a first flange plate, the top of which is connected to a connecting seat, the top of which is connected to a first connecting pipe, the bottom of which is fixedly connected to a sealing seat, the surface of which is fixedly connected to a limiting block, a second flange plate is arranged at the bottom of the first flange plate, a limiting groove is provided on the inner wall of the second flange plate, the limiting groove is matched with the limiting block, the bottom of the second flange plate is connected to a second connecting pipe, the first connecting pipe comprises a substrate layer, and the surface of the substrate layer is fixedly connected to a corrosion-resistant layer.

[0009] The utility model is further configured such that a first mounting hole is provided at the top of the first flange, and a second mounting hole is provided at the top of the second flange.

[0010] The utility model is further configured that reinforcement blocks are fixedly connected to the four sides of the surface of the connection seat, and the bottom of the reinforcement blocks is fixedly connected to the first flange.

[0011] The utility model is further configured such that a positioning bolt is provided on the left side of the top of the first flange, and the positioning bolt is adapted to the first mounting hole and the second mounting hole.

[0012] The utility model is further configured that a first sealing ring is sleeved on the top of the sealing seat, and the material of the first sealing ring is rubber.

[0013] The utility model is further configured such that a second sealing ring is provided at the bottom of the second flange, and the second sealing ring is sleeved on the surface of the second connecting pipe.

[0014] The utility model is further configured that the substrate layer is made of a glass fiber reinforced plastic substrate, and the corrosion-resistant layer is made of an epoxy resin.

[0015] The utility model is further configured such that the inner wall of the first connecting pipe is provided with an internal thread, and the surface of the second connecting pipe is provided with an external thread.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model connects the first flange and the first connecting pipe through the connecting seat, which can effectively improve the strength of the connection between the first connecting pipe and the first flange, and avoid the phenomenon that the flange is cracked or broken due to the large pressure generated when it is under pressure. The first flange and the second flange can be quickly connected by matching the limiting groove and the limiting block, which ensures the stability of the connection and avoids the influence of dislocation on the installation efficiency, thereby improving the use effect of the fiberglass flange.

[0018] 2. The utility model adopts a fiberglass substrate through the base material layer, which can give full play to the high strength and easy forming characteristics of the fiberglass. The corrosion-resistant layer is made of epoxy resin and can form an anti-corrosion coating on the surface of the first connecting pipe, thereby increasing the service life of the fiberglass flange.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0021] Figure 1 It is a structural stereogram of a corrosion-resistant fiberglass flange;

[0022] Figure 2 A bottom view of a first flange in a corrosion-resistant fiberglass flange;

[0023] Figure 3 A three-dimensional diagram of a second flange in a corrosion-resistant glass fiber reinforced plastic flange;

[0024] Figure 4 It is a bottom view of the second flange in a corrosion-resistant glass fiber reinforced plastic flange;

[0025] Figure 5 It is a cross-sectional view of a first connecting pipe in a corrosion-resistant glass fiber reinforced plastic flange.

[0026] In the accompanying drawings: 1. first flange; 2. connecting seat; 3. first connecting pipe; 301. base material layer; 302. corrosion-resistant layer; 4. sealing seat; 5. limiting block; 6. second flange; 7. limiting groove; 8. second connecting pipe; 9. first mounting hole; 10. second mounting hole; 11. reinforcement block; 12. positioning bolt; 13. first sealing ring; 14. second sealing ring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] For specific embodiment 1, please refer to Figure 1-5 The utility model is a corrosion-resistant glass fiber reinforced plastic flange, comprising a first flange 1, the top of the first flange 1 is connected to a connecting seat 2, the top of the connecting seat 2 is connected to a first connecting pipe 3, the bottom of the first flange 1 is fixedly connected to a sealing seat 4, the surface of the sealing seat 4 is fixedly connected to a limiting block 5, the bottom of the first flange 1 is provided with a second flange 6, the inner wall of the second flange 6 is provided with a limiting groove 7, the limiting groove 7 is adapted to the limiting block 5, the bottom of the second flange 6 is connected to a second connecting pipe 8, the first connecting pipe 3 comprises a substrate layer 301, and the surface of the substrate layer 301 is fixedly connected to a corrosion-resistant layer 302.

[0029] Specifically: On the one hand, the first flange 1 and the second flange 6 are quickly installed by a snap-fit ​​positioning method, and are fixed by positioning bolts 12 to ensure the stability of the flange during installation. The first flange 1 and the first connecting pipe 3 are reinforced by the connecting seat 2 to improve the strength of the connection. The limiting groove 7 is adapted to the limiting block 5 to ensure its stability during installation while improving the sealing effect.

[0030] For specific embodiment 2, please refer to Figure 1-5 On the basis of the specific embodiment 1, a first mounting hole 9 is provided at the top of the first flange 1, a second mounting hole 10 is provided at the top of the second flange 6, reinforcement blocks 11 are fixedly connected to the four sides of the surface of the connecting seat 2, the bottom of the reinforcement block 11 is fixedly connected to the first flange 1, a positioning bolt 12 is provided on the left side of the top of the first flange 1, the positioning bolt 12 is adapted to the first mounting hole 9 and the second mounting hole 10, a first sealing ring 13 is sleeved on the top of the sealing seat 4, the material of the first sealing ring 13 is rubber, a second sealing ring 14 is provided at the bottom of the second flange 6, the second sealing ring 14 is sleeved on the surface of the second connecting pipe 8, the substrate layer 301 is made of glass fiber reinforced plastic substrate, the corrosion-resistant layer 302 is made of epoxy resin, the inner wall of the first connecting pipe 3 is provided with an internal thread, and the surface of the second connecting pipe 8 is provided with an external thread.

[0031] Specifically: the first flange 1 and the second flange 6 can be installed through the first mounting hole 9 and the second mounting hole 10, and can be fixed by the positioning bolts 12. The connecting seat 2 is strengthened by the reinforcement block 11, which can further improve the service strength of the flange connection. The first sealing ring 13 and the second sealing ring 14 can improve the sealing performance of the flange connection, and can effectively avoid the phenomenon of flange leakage caused by aging of the sealing element and improper installation and tightening. Through the cooperation of the internal thread and the external thread, the first connecting pipe 3 and the second connecting pipe 8 can be installed respectively.

[0032] The working principle of the utility model is as follows: after the second connecting pipe 8 is threadedly connected to the external connecting device, the second flange 6 is connected to the first flange 1, the limiting block 5 is clamped into the inside of the limiting groove 7, and then the first flange 1 and the second flange 6 are fastened by the positioning bolts 12, so as to achieve the purpose of quickly installing the glass fiber reinforced plastic flange;

[0033] The substrate layer 301 is made of a glass fiber reinforced plastic substrate, which can give full play to the high strength and easy forming characteristics of the glass fiber reinforced plastic. The corrosion-resistant layer 302 is made of epoxy resin, which can form an anti-corrosion coating on the surface of the first connecting pipe 3, thereby improving the service life of the glass fiber reinforced plastic flange. The first flange plate 1, the first connecting pipe 3, the second flange plate 6 and the second connecting pipe 8 are all made of the same material.

[0034] The standard parts used in the present invention can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatically controlled by a control unit. The control circuit of the control unit can be realized by simple programming by technicians in this field, which belongs to the common knowledge in this field. Therefore, the control method and circuit connection are no longer explained in detail in the present invention.

[0035] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to specific implementation methods. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can well understand and use the present invention.

Claims

1. A corrosion-resistant glass fiber reinforced plastic flange, comprising a first flange plate (1), characterized in that: The top of the first flange (1) is connected to a connecting seat (2), the top of the connecting seat (2) is connected to a first connecting pipe (3), the bottom of the first flange (1) is fixedly connected to a sealing seat (4), the surface of the sealing seat (4) is fixedly connected to a limiting block (5), the bottom of the first flange (1) is provided with a second flange (6), the inner wall of the second flange (6) is provided with a limiting groove (7), the limiting groove (7) is adapted to the limiting block (5), the bottom of the second flange (6) is connected to a second connecting pipe (8), the first connecting pipe (3) comprises a base material layer (301), and the surface of the base material layer (301) is fixedly connected to a corrosion-resistant layer (302).

2. The corrosion-resistant fiberglass flange according to claim 1, characterized in that: A first mounting hole (9) is formed at the top of the first flange (1), and a second mounting hole (10) is formed at the top of the second flange (6).

3. The corrosion-resistant fiberglass flange according to claim 1, characterized in that: Reinforcement blocks (11) are fixedly connected to the four sides of the surface of the connection seat (2), and the bottom of the reinforcement block (11) is fixedly connected to the first flange (1).

4. The corrosion-resistant fiberglass flange according to claim 2, characterized in that: A positioning bolt (12) is provided on the left side of the top of the first flange (1), and the positioning bolt (12) is compatible with the first mounting hole (9) and the second mounting hole (10).

5. The corrosion-resistant fiberglass flange according to claim 1, characterized in that: A first sealing ring (13) is sleeved on the top of the sealing seat (4), and the material of the first sealing ring (13) is rubber.

6. The corrosion-resistant fiberglass flange according to claim 1, characterized in that: A second sealing ring (14) is provided at the bottom of the second flange (6), and the second sealing ring (14) is sleeved on the surface of the second connecting pipe (8).

7. The corrosion-resistant fiberglass flange according to claim 1, characterized in that: The substrate layer (301) is made of a glass fiber reinforced plastic substrate, and the corrosion-resistant layer (302) is made of epoxy resin.

8. The corrosion-resistant fiberglass flange according to claim 1, characterized in that: The inner wall of the first connecting pipe (3) is provided with an internal thread, and the surface of the second connecting pipe (8) is provided with an external thread.

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