High-precision anti-corrosion mechanical flange connecting structure

Abstract

The utility model discloses a high-precision anti-corrosion mechanical flange connecting structure which comprises a connecting flange fixedly connected with a fixed pipeline flange through a bolt, a first sealing ring is welded in the connecting flange, and second flow dividing blocks which are evenly distributed are welded on the inner surface of the first sealing ring. A convex ring is welded on the side surface of the first sealing ring; the flow guide assembly comprises a second connecting column fixedly connected with the connecting flange, a sleeve perpendicular to the center position of the second connecting column and flow guide plates evenly distributed on the outer side of the sleeve. The mounting ring is mounted in the fixed pipeline flange; a second sealing ring and uniformly distributed first shunting blocks are welded on the inner surface of the mounting ring; the first sealing ring, the mounting ring, the second sealing ring and the flow guide plate are designed to seal the joint surface of the fixed pipeline flange and the connecting flange, so that the impact of fluid on the joint surface is reduced, and the leakage caused by the gap increase of the joint surface due to the impact on the fixed pipeline flange and the connecting flange is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical flange technical field, concretely relates to a high accuracy anticorrosive mechanical flange connecting structure. BACKGROUND

[0002] Mechanical flange is hollow disc mechanical part structure, can adopt stainless steel material or alloy steel and so on material manufacture, has anticorrosive, and the mechanical flange that high accuracy machining center machine tool processes has high accuracy, stability, and the mechanical flange is mainly used to connect and detach the shaft, pipeline and simple body and between the head, realizes the connection between pipeline and equipment or shaft and equipment, and the mechanical flange connecting structure is mainly composed of flange plate, gasket, bolt and nut three parts;

[0003] When mechanical flange is used for the connection between pipelines, fluid flows through the part of pipeline flange connection, although the gasket is placed between the flange plate, but under the long-term flow impact of fluid, the gap between the flange plate combination surface may become larger, resulting in fluid leakage and the corrosion of the gasket contacted with the outside, the internal part of flange has no fluid guiding function, cannot reduce the impact of fluid on the flange combination part, and there is a deficiency;

[0004] The existing flange plate for pipeline connection has no internal fluid diversion design of guiding fluid, so the application provides a high accuracy anticorrosive mechanical flange connecting structure. CONTENT OF UTILITY MODEL

[0005] The utility model aims at providing a high accuracy anticorrosive mechanical flange connecting structure to solve the problem of internal fluid diversion design of guiding fluid of flange plate in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a high accuracy anticorrosive mechanical flange connecting structure, comprising

[0007] The connecting flange is fixedly connected with the fixed pipeline flange through the bolt, the first sealing ring is welded in the connecting flange, the second diversion block is welded on the inner surface of the first sealing ring, and the convex ring is welded on the side surface of the first sealing ring.

[0008] The flow guide assembly comprises a second connecting column fixedly connected with the connecting flange, a sleeve perpendicular to the center position of the second connecting column and a flow guide plate uniformly distributed on the outside of the sleeve.

[0009] The mounting ring is mounted in the inner flange of the fixed pipe, the inner surface of the mounting ring is welded with the second sealing ring and the uniformly distributed first flow dividing block, the side surface of the second sealing ring is bonded with the anticorrosion rubber ring, the first connecting column and the limiting column vertically positioned at the center of the first connecting column are fixedly connected in the mounting ring, and the reinforcing bolt is penetrated through the mounting ring.

[0010] Preferably, the inner circle diameter of the fixed pipe flange and the connecting flange is same, the outer circle diameter of the mounting ring is same with the inner circle diameter of the fixed pipe flange, and the circle centers of the connecting flange and the mounting ring are on the same axis.

[0011] Preferably, the sleeve is a hollow structure, the inner circle diameter of the sleeve is same with the outer circle diameter of the limiting column, and the flow guide plate is a plate structure.

[0012] Preferably, the first flow dividing block and the second flow dividing block are both the streamlined structure of the stretched semi-elliptic body.

[0013] Preferably, the first sealing ring comprises the close contact ring a, the connecting ring b and the sealing circular ring part c, the connecting ring b is positioned at the center of the close contact ring a and the sealing circular ring part c, the section of the close contact ring a is the right triangle shape, the section of the sealing circular ring part c is the right trapezoid shape, and the slope of the section of the sealing circular ring part c is the curved shape.

[0014] Preferably, the recessed mounting circular groove is formed in the sealing circular ring part c of the first sealing ring, the convex ring is positioned in the mounting circular groove, and the anticorrosion rubber ring is matched with the mounting circular groove.

[0015] Preferably, the anticorrosion rubber ring is provided with the groove matched with the corresponding convex ring.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] 1. In the utility model, the first sealing ring, the mounting ring and the second sealing ring are designed to seal the joint surface of the fixed pipe flange and the connecting flange, and reduce the impact of fluid on the joint surface.

[0018] 2. In the utility model, the flow guide plate is designed to divide and guide the fluid conveyed in the fixed pipe flange and the connecting flange, reduce the speed and impact force of the fluid, and avoid the increase of the joint surface gap caused by the impact on the fixed pipe flange and the connecting flange.

[0019] 3. In the utility model, the anticorrosion rubber ring is designed to seal the first sealing ring and the second sealing ring, and avoid the leakage between the first sealing ring and the second sealing ring. DRAWINGS

[0020] Figure 1A structure schematic view of the connecting flange of the utility model is shown in the figure;

[0021] Figure 2 A structure schematic view of the connecting flange of the utility model is shown in the figure;

[0022] Figure 3 A structure schematic view of the connecting flange of the utility model is shown in the figure; Figure 2 A structure schematic view of the connecting flange of the utility model is shown in the figure;

[0023] Figure 4 A structure schematic view of the connecting flange of the utility model is shown in the figure;

[0024] Figure 5 A structure schematic view of the connecting flange of the utility model is shown in the figure;

[0025] In the figure: 1, fixed pipeline flange; 2, connecting flange; 4, mounting ring; 5, anticorrosion rubber ring; 6, limit column; 7, reinforcing bolt; 8, first connecting column; 9, first sealing ring; 31, sleeve; 32, deflector; 33, second connecting column; 41, first shunt block; 42, second sealing ring; 51, groove; 91, second shunt block; 92, convex ring. DETAILED DESCRIPTION

[0026] 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, 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.

[0027] Please refer to Figures 1 to 5The utility model provides a technical scheme: a high accuracy anticorrosive mechanical flange connecting structure, including the connecting flange 2 that is connected with fixed pipeline flange 1 through bolt fixed connection, the connecting flange 2 is combined with fixed pipeline flange 1 and connects, the fluid conveying of pipeline inside is transported, the inside welding of this connecting flange 2 has first sealing ring 9, the even distribution of second shunt block 91 is welded on the inner surface of first sealing ring 9, the convex ring 92 is welded on first sealing ring 9 side, first sealing ring 9 plays the role of sealing connecting flange 2 and fixed pipeline flange 1 combined surface, second shunt block 91 plays the role of shunting fluid, reduces the impact of fluid to connecting flange 2 and fixed pipeline flange 1 combined surface, guarantees the close degree of connecting flange 2 and fixed pipeline flange 1 combined surface, the surface bending of convex ring 92, fluid flows along the curve direction of convex ring 92 surface, guide component, including with the second connecting column 33 of connecting flange 2 fixed connection, the sleeve 31 of vertical second connecting column 33 center position, the even distribution of guide plate 32 on the outside of sleeve 31, connecting flange 2 and fixed pipeline flange 1 combine, one end of guide plate 32 is inserted into the inside of mounting ring 4, when fluid is circulated between connecting flange 2 and fixed pipeline flange 1, guide plate 32 shunts fluid, reduces the impact of fluid to fluid in connecting flange 2 and fixed pipeline flange 1 combined part, so as to cause the gap of connecting flange 2 and fixed pipeline flange 1 combined surface, even the leakage condition of appearing, mounting ring 4 is installed in the inside of fixed pipeline flange 1, mounting ring 4 and fixed pipeline flange 1 are reinforced through reinforcing bolt 7, mounting ring 4 and first sealing ring 9 are pasted, so that the combined surface of connecting flange 2 and fixed pipeline flange 1 is blocked, avoid the position of combined surface to be impacted by fluid, the inner surface welding of this mounting ring 4 has second sealing ring 42 and even distribution's first shunt block 41, first shunt block 41 plays the role of shunting fluid, second sealing ring 42 plays the role of sealing combined surface position, the side of this second sealing ring 42 is bonded with anticorrosive rubber ring 5, anticorrosive rubber ring 5 plays the role of sealing mounting ring 4 and first sealing ring 9, first connecting column 8 and the limiting column 6 of vertical first connecting column 8 center position are fixedly connected in mounting ring 4, limiting column 6 plays the role of positioning sleeve 31, reinforcing bolt 7 is penetrated in mounting ring 4, reinforcing bolt 7 reinforces mounting ring 4 and fixed pipeline flange 1.

[0028] In the embodiment, the inner circle diameters of the fixed pipeline flange 1 and the connecting flange 2 are the same, the outer circle diameter of the mounting ring 4 is the same as the inner circle diameter of the fixed pipeline flange 1, the centers of the connecting flange 2 and the mounting ring 4 are on the same axis, the mounting ring 4 is inserted into the inside of the fixed pipeline flange 1, and the fixed pipeline flange 1 and the connecting flange 2 are combined through bolts.

[0029] In this embodiment, the sleeve 31 is a hollow structure, and the inner diameter of the sleeve 31 is the same as the outer diameter of the limiting post 6. The sleeve 31 is fitted on the outside of the limiting post 6. The guide plate 32 is a plate-shaped structure. The guide plate 32 diverts and guides the fluid to avoid the fluid impacting the connection position of the fixed pipe flange 1 and the connecting flange 2.

[0030] In this embodiment, both the first diversion block 41 and the second diversion block 91 are streamlined structures of stretched semi-elliptical bodies, utilizing the flow of fluid on the surfaces of the first diversion block 41 and the second diversion block 91.

[0031] In this embodiment, the first sealing ring 9 includes a fitting ring a, a connecting ring b, and a sealing ring portion c. The connecting ring b is located at the center of the fitting ring a and the sealing ring portion c. The cross-section of the fitting ring a is a right-angled triangle, and the cross-section of the sealing ring portion c is a right-angled trapezoid. The inclined surface of the cross-section of the sealing ring portion c is curved. Fluid flows on the surface of the first sealing ring 9, and the first sealing ring 9 covers the mating surface of the fixed pipe flange 1 and the connecting flange 2.

[0032] In this embodiment, the sealing ring portion c of the first sealing ring 9 is provided with a concave mounting ring groove, the convex ring 92 is located in the mounting ring groove, the anti-corrosion rubber ring 5 cooperates with the mounting ring groove, the anti-corrosion rubber ring 5 is embedded in the mounting ring groove, the first sealing ring 9 is tightly fitted with the mounting ring 4 and the second sealing ring 42, and the anti-corrosion rubber ring 5 seals the first sealing ring 9 and the second sealing ring 42.

[0033] In this embodiment, the anti-corrosion rubber ring 5 has a groove 51 that mates with the corresponding convex ring 92. The anti-corrosion rubber ring 5 and the convex ring 92 are engaged and connected to further increase the sealing effect and prevent fluid leakage.

[0034] Working principle and usage process of this utility model:

[0035] When fixing the fixed pipe flange 1 to the connecting flange 2, the mounting ring 4 is first secured inside the fixed pipe flange 1 by the reinforcing bolts 7.

[0036] Then, the connecting flange 2 is combined with the fixed pipe flange 1, the sleeve 31 is fitted on the outside of the corresponding limiting post 6, and the connecting flange 2 and the fixed pipe flange 1 are fixed with bolts.

[0037] Combination Figure 3 When the connecting flange 2 is combined with the fixed pipe flange 1, the anti-corrosion rubber ring 5 is embedded inside the first sealing ring 9, and the anti-corrosion rubber ring 5 is engaged with the convex ring 92 to further increase the sealing effect and prevent fluid leakage.

[0038] Combination Figure 3The inside of the first sealing ring 9 is provided with a second flow dividing block 91, and the inside of the mounting ring 4 is provided with a first flow dividing block 41 and a second sealing ring 42, the first flow dividing block 41 and the second flow dividing block 91 serve to divide the fluid, and the first sealing ring 9, the mounting ring 4 and the second sealing ring 42 serve to shield the joint surface of the connecting flange 2 and the fixed pipeline flange 1;

[0039] The connecting flange 2 is combined with the fixed pipeline flange 1, one end of the flow guide plate 32 is inserted into the inside of the mounting ring 4, and when the fluid flows between the connecting flange 2 and the fixed pipeline flange 1, the flow guide plate 32 divides the fluid, reduces the impact of the fluid on the joint part of the connecting flange 2 and the fixed pipeline flange 1, thereby causing the joint surface of the connecting flange 2 and the fixed pipeline flange 1 to have a gap, and even a leakage situation;

[0040] In summary, the inside of the flange plate is provided with a fluid dividing design for guiding the fluid, the flow guide plate 32 divides the fluid, reduces the impact of the fluid on the joint part of the connecting flange 2 and the fixed pipeline flange 1, the first sealing ring 9, the mounting ring 4 and the second sealing ring 42 shield the joint surface, the anti-corrosion rubber ring 5 is connected with the convex ring 92, and the sealing effect is further increased, and the fluid leakage situation is avoided.

[0041] Although the embodiments of the utility model have been shown and described (see the above detailed description), it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-precision corrosion-resistant mechanical flange connection structure, characterized in that: Comprising A connecting flange (2) fixedly connected with the fixed pipe flange (1) by bolts, a first sealing ring (9) welded inside the connecting flange (2), a plurality of second flow dividing blocks (91) evenly distributed on the inner surface of the first sealing ring (9), and a convex ring (92) welded on the side surface of the first sealing ring (9); A flow guide assembly including a second connecting column (33) fixedly connected with the connecting flange (2), a sleeve (31) vertically arranged at the center of the second connecting column (33), and a plurality of flow guide plates (32) evenly distributed on the outer side of the sleeve (31); An installation ring (4) installed inside the fixed pipe flange (1), a second sealing ring (42) and a plurality of first flow dividing blocks (41) welded on the inner surface of the installation ring (4), an anti-corrosion rubber ring (5) bonded on the side surface of the second sealing ring (42), a first connecting column (8) and a limiting column (6) vertically arranged at the center of the first connecting column (8) fixedly connected inside the installation ring (4), and a reinforcing bolt (7) penetrating through the installation ring (4).

2. A high-precision anti-corrosion mechanical flange connection structure according to claim 1, characterized in that: The inner circle diameters of the fixed pipe flange (1) and the connecting flange (2) are the same, the outer circle diameter of the installation ring (4) is the same as the inner circle diameter of the fixed pipe flange (1), and the centers of the connecting flange (2) and the installation ring (4) are on the same axis.

3. A high-precision anti-corrosion mechanical flange connecting structure according to claim 1, characterized in that: The sleeve (31) is a hollow structure, the inner circle diameter of the sleeve (31) is the same as the outer circle diameter of the limiting column (6), and the flow guide plate (32) is a plate structure.

4. The high-precision anti-corrosion mechanical flange connecting structure according to claim 1, characterized in that: The first flow dividing block (41) and the second flow dividing block (91) are both stretched semi-elliptical streamlined structures.

5. The high-precision anti-corrosion mechanical flange connecting structure according to claim 1, characterized in that: The first sealing ring (9) includes a close-fitting ring a, a connecting ring b, and a sealing circular ring part c, the connecting ring b is located at the center position of the close-fitting ring a and the sealing circular ring part c, the cross section of the close-fitting ring a is a right-angled triangle shape, the cross section of the sealing circular ring part c is a right-angled trapezoidal shape, and the slope of the cross section of the sealing circular ring part c is curved.

6. A high-precision anti-corrosion mechanical flange connecting structure according to claim 5, characterized in that: An inner recessed installation circular groove is formed on the sealing circular ring part c of the first sealing ring (9), the convex ring (92) is located in the installation circular groove, and the anti-corrosion rubber ring (5) cooperates with the installation circular groove.

7. The high-precision anti-corrosion mechanical flange connecting structure according to claim 1, characterized in that: A groove (51) corresponding to the convex ring (92) is formed on the anti-corrosion rubber ring (5).

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