Low-temperature-resistant flange

Abstract

The utility model relates to the technical field of flanges, in particular to a low-temperature-resistant flange which comprises a flange piece, the flange piece is composed of a first flange plate and a second flange plate, the outer wall of the flange piece is sleeved with a rubber sleeve, a plurality of first trapezoid blocks are arranged on the inner wall of a convex ring, and second trapezoid grooves are formed in the positions, corresponding to the first trapezoid grooves, of the upper surface of the second flange plate. Positioning columns are arranged between the first trapezoid grooves and the second trapezoid grooves, and a plurality of supporting blocks are arranged on the outer wall of the tightening ring. According to the low-temperature-resistant flange, the first flange plate and the second flange plate are combined, anti-freezing coatings are sprayed to the outer walls of the first flange plate and the second flange plate, the overall low-temperature resistance is improved, and the first flange plate and the second flange plate are matched with clamping grooves in a pipeline in an inserted connection mode under the cooperation of a first trapezoid block and a second trapezoid block; the flange piece and the pipeline can be conveniently and rapidly combined, and the stability of installation of the flange piece and the pipeline is improved through welding fixation.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, specifically to a low-temperature resistant flange. Background Technology

[0002] A flange is a mechanical fastener, also called a flange disc or flange. Flanges are parts that connect shafts to each other and are used for connecting pipe ends. Flanges are also used on equipment inlets and outlets for connecting two pieces of equipment, such as speed reducer flanges. A flange connection or flange joint refers to a detachable connection consisting of a flange, gasket, and bolts connected together as a combined sealing structure.

[0003] The utility model disclosed in CN217482233U is a freeze-resistant and high-temperature resistant flange, including a mounting base. The mounting base has mounting holes at its inner edge, and each mounting hole has an auxiliary structure at its top. The mounting base has an alignment structure at its bottom. A connecting seat is mounted on the top of the mounting base. Both the mounting base and the connecting seat have insertion holes inside. Both the mounting base and the connecting seat have a protective structure on their surfaces, and the protective structure includes a high-temperature resistant coating.

[0004] The above technical solution includes a protective structure. The high-temperature resistant coating has good high-temperature resistance, which can improve the high-temperature performance of the mounting base and the connecting base. The low-temperature resistant coating has good low-temperature resistance, which can improve the low-temperature performance of the mounting base and the connecting base. The wear-resistant coating can protect the high-temperature resistant coating and the low-temperature resistant coating, improve the wear resistance of the low-temperature resistant coating surface, and extend the service life of the high-temperature resistant coating and the low-temperature resistant coating. However, when the flange is used in a low-temperature environment for a long time, the flange may freeze and crack, making it inconvenient to disassemble and replace. Furthermore, the flange is not convenient to quickly assemble and install with the pipeline and fix its position. Utility Model Content

[0005] The purpose of this invention is to provide a low-temperature resistant flange to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A low-temperature resistant flange includes a flange component composed of a first flange and a second flange. A rubber sleeve is fitted on the outer wall of the flange component. A raised ring is provided on the upper surface of the first flange near the inner ring. A plurality of first trapezoidal blocks are provided on the inner wall of the raised ring. A plurality of first fixing holes are provided on the first flange. A plurality of first trapezoidal grooves are provided on the lower surface of the first flange. A second trapezoidal groove is provided on the upper surface of the second flange at a position corresponding to the first trapezoidal groove. A second fixing hole is provided on the upper surface of the second flange at a position corresponding to the first fixing holes. A positioning post is provided between the first trapezoidal groove and the second trapezoidal groove. A second trapezoidal block is provided on the inner wall of the second flange at a position corresponding to the first trapezoidal block. A clamping ring is fitted on the outer wall of the raised ring. A plurality of support blocks are provided on the outer wall of the clamping ring.

[0008] Furthermore, a pipe is provided in the middle of the flange, and a groove is provided on the top of the outer wall of the pipe corresponding to the first trapezoidal block.

[0009] In this invention, a groove is fitted on the pipe, and the width of the inner wall of the groove is adapted to the width of the outer wall of the first trapezoidal block. The first trapezoidal block and the groove are inserted into each other, which helps the flange to be inserted into the pipe.

[0010] Specifically, the width of the inner wall of the slot is adapted to the width of the outer walls of the second trapezoidal block and the first trapezoidal block.

[0011] In this invention, the second trapezoidal block and the first trapezoidal block are inserted into the slot to achieve rapid installation of the first flange, the second flange, and the pipeline.

[0012] Secondly, the bottom of the convex ring is welded and fixed to the top of the first flange, the inner diameter of the clamping ring is adapted to the outer diameter of the convex ring, the inner wall of the clamping ring is welded and fixed to the convex ring, the support blocks are distributed in a ring at equal intervals, and the support blocks and the clamping ring are integrally formed.

[0013] In this invention, the cooperation between the convex ring and the clamping ring, along with the cooperation of multiple support blocks, increases the overall structural stability of the first flange.

[0014] It should be noted that the outer diameter of the second flange is compatible with the outer diameter of the first flange, the first trapezoidal block and the first flange are integrally formed, the second trapezoidal block and the second flange are integrally formed, and the inner diameter of the first fixing hole is compatible with the inner diameter of the second fixing hole.

[0015] In this invention, the second trapezoidal block and the second flange are integrally formed to increase the overall structural stability. The cooperation between the first fixing hole and the second fixing hole facilitates the passage of external screws, thereby enabling the flange to be fixed together with the adjacent connecting pipe.

[0016] Furthermore, the positioning post is formed by two trapezoidal posts combined in opposition, and the width of the outer wall of the positioning post is adapted to the width of the inner wall of the space formed by the combination of the second trapezoidal groove and the first trapezoidal groove.

[0017] In this invention, the positioning column enables a stable combination and installation of the first flange and the second flange, thereby increasing the stability of the installation.

[0018] Specifically, the inner wall of the rubber sleeve is provided with an annular groove, the inner diameter of which is adapted to the outer diameter of the first flange and the second flange. A through hole is provided on the rubber sleeve at the position corresponding to the second fixing hole, and a through groove is provided on the rubber sleeve at the position corresponding to the support block.

[0019] In this invention, the rubber sleeve protects the first and second flanges, reducing the impact of low temperatures on the first and second flanges from freezing and cracking. Furthermore, the outer walls of both the first and second flanges are coated with an antifreeze coating, further increasing their overall low-temperature resistance. The through groove facilitates the insertion and mating of the support block and the rubber sleeve, increasing the stability of the combination of the rubber sleeve and the flange.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This utility model increases the overall low-temperature resistance by setting up a combination of a first flange and a second flange, and spraying an antifreeze coating on the outer wall of both the first flange and the second flange. With the cooperation of the first trapezoidal block and the second trapezoidal block, the first flange and the second flange are engaged with the slot on the pipe, which facilitates the quick assembly of the flange and the pipe. The flange is fixed by welding, which increases the stability of the installation of the flange and the pipe.

[0022] 2. This utility model increases the stability of the top structure of the first flange by setting a clamp with a support block and connecting it with a convex ring. The rubber sleeve is set to fit with the flange to protect the outermost layer of the flange and provide low-temperature protection again, reducing the impact of low temperature on the flange freezing and cracking, which would affect the installation and use of the pipeline and external connection pipe. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the pipeline structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the rubber sleeve and flange assembly structure of this utility model;

[0026] Figure 4 This is an exploded view of the flange structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0028] The meanings of the labels in the diagram are as follows:

[0029] 1. Flange; 10. First flange; 100. Raised ring; 101. First trapezoidal block; 102. First fixing hole; 103. First trapezoidal groove; 11. Second flange; 110. Second fixing hole; 111. Second trapezoidal block; 112. Second trapezoidal groove; 12. Positioning pin;

[0030] 2. Hoop ring; 20. Support block;

[0031] 3. Rubber sleeve; 30. Annular groove; 31. Perforation; 32. Through groove;

[0032] 4. Pipeline; 40. Slot. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figures 1-5 This embodiment provides a technical solution:

[0035] A low-temperature resistant flange includes a flange 1, which is composed of a first flange 10 and a second flange 11. A rubber sleeve 3 is fitted on the outer wall of the flange 1. An annular groove 30 is formed on the inner wall of the rubber sleeve 3. The inner diameter of the annular groove 30 is adapted to the outer diameter of the first flange 10 and the second flange 11. A through hole 31 is formed on the rubber sleeve 3 at a position corresponding to the second fixing hole 110. A through groove 32 is formed on the rubber sleeve 3 at a position corresponding to the support block 20.

[0036] In this utility model, the rubber sleeve 3 protects the first flange 10 and the second flange 11, reducing the impact of low external temperatures on the freezing and cracking of the first flange 10 and the second flange 11. Furthermore, the outer walls of the first flange 10 and the second flange 11 are coated with an antifreeze coating, further increasing the overall low-temperature resistance. The through groove 32 facilitates the insertion and engagement of the support block 20 and the rubber sleeve 3, increasing the stability of the combination of the rubber sleeve 3 and the flange 1.

[0037] Furthermore, a raised ring 100 is provided on the upper surface of the first flange 10 near the inner ring. The bottom of the raised ring 100 is welded and fixed to the top of the first flange 10. The inner diameter of the clamping ring 2 is adapted to the outer diameter of the raised ring 100. The inner wall of the clamping ring 2 is welded and fixed to the raised ring 100. The support blocks 20 are distributed in a ring at equal intervals. The support blocks 20 and the clamping ring 2 are integrally formed.

[0038] In this invention, the cooperation between the convex ring 100 and the clamping ring 2, and the cooperation of multiple support blocks 20, increases the overall structural stability of the first flange 10.

[0039] It should be noted that the inner wall of the convex ring 100 is provided with several first trapezoidal blocks 101, the first flange 10 is provided with several first fixing holes 102, the lower surface of the first flange 10 is provided with several first trapezoidal grooves 103, the upper surface of the second flange 11 is provided with second trapezoidal grooves 112 corresponding to the first trapezoidal grooves 103, the upper surface of the second flange 11 is provided with second fixing holes 110 corresponding to the first fixing holes 102, positioning pins 12 are provided between the first trapezoidal grooves 103 and the second trapezoidal grooves 112, the inner wall of the second flange 11 is provided with second trapezoidal blocks 111 corresponding to the first trapezoidal blocks 101, the outer diameter of the second flange 11 is adapted to the outer diameter of the first flange 10, the first trapezoidal blocks 101 and the first flange 10 are integrally formed, the second trapezoidal blocks 111 and the second flange 11 are integrally formed, and the inner diameter of the first fixing holes 102 is adapted to the inner diameter of the second fixing holes 110.

[0040] In this utility model, the second trapezoidal block 111 and the second flange 11 are integrally formed to increase the overall structural stability. With the cooperation of the first fixing hole 102 and the second fixing hole 110, it is easy for external screws to pass through, so as to realize the combination and fixation of the flange 1 and the adjacent connecting pipe.

[0041] Specifically, the positioning post 12 is formed by two trapezoidal posts combined in opposition, and the width of the outer wall of the positioning post 12 is adapted to the width of the inner wall of the space formed by the combination of the second trapezoidal groove 112 and the first trapezoidal groove 103.

[0042] In this invention, the positioning column 12 cooperates to achieve a stable combination and installation of the first flange 10 and the second flange 11, thereby increasing the stability of the installation.

[0043] Furthermore, a clamping ring 2 is fitted on the outer wall of the convex ring 100, and several support blocks 20 are provided on the outer wall of the clamping ring 2.

[0044] Secondly, a pipe 4 is provided in the middle of the flange 1, and a groove 40 is provided on the top of the outer wall of the pipe 4 corresponding to the first trapezoidal block 101.

[0045] In this utility model, the pipe 4 is fitted with a groove 40, and the width of the inner wall of the groove 40 is adapted to the width of the outer wall of the first trapezoidal block 101. The first trapezoidal block 101 and the groove 40 are inserted into each other, which helps the flange 1 and the pipe 4 to be inserted into each other.

[0046] It should be noted that the width of the inner wall of the slot 40 is adapted to the width of the outer wall of the second trapezoidal block 111 and the first trapezoidal block 101.

[0047] In this utility model, the second trapezoidal block 111 and the first trapezoidal block 101 are inserted into the slot 40 to achieve quick installation of the first flange 10, the second flange 11 and the pipe 4.

[0048] Both the first flange 10 and the second flange 11 are coated with a low-temperature resistant coating to provide initial low-temperature protection.

[0049] In this embodiment, when using the low-temperature resistant flange, the user first tightly fits the first flange 10 and the second flange 11 together, with the first fixing hole 102 corresponding to the second fixing hole 110. Then, the positioning pin 12 is inserted into the first trapezoidal groove 103 and the second trapezoidal groove 112 to fix the first flange 10 and the second flange 11 together. Next, the clamping ring 2 with the support block 20 is connected to the convex ring 100. Finally, the rubber sleeve 3 is placed on the outer wall of the first flange 10 and the second flange 11, with the through hole 31 corresponding to the first fixing hole 102 and the through groove 32 inserted into the support block 20. Finally, the flange 1 is inserted into the slot 40 on the pipe 4 through the first trapezoidal block 101 and the second trapezoidal block 111 to quickly fix the flange 1 to the pipe 4. The flange 1 and the pipe 4 are then welded together using an external electric welding machine to increase the stability of the installation.

[0050] When the corresponding first flange 10 and second flange 11 are damaged by freezing and need to be replaced, the welding point between the flange 1 and the pipe 4 is ground by hand with the help of the grinding disc, so that the flange 1 and the pipe 4 are disconnected from the welded assembly. With the help of the first trapezoidal block 101 and the second trapezoidal block 111, the flange 1 can be easily removed, the positioning post 12 can be removed, and the first flange 10 or the second flange 11 with freezing and cracking can be removed and replaced accordingly, which helps to save replacement materials.

Claims

1. A low-temperature resistant flange, comprising a flange component (1), characterized in that: The flange (1) is composed of a first flange (10) and a second flange (11). A rubber sleeve (3) is fitted on the outer wall of the flange (1). A raised ring (100) is provided on the upper surface of the first flange (10) near the inner ring. Several first trapezoidal blocks (101) are provided on the inner wall of the raised ring (100). Several first fixing holes (102) are opened on the first flange (10). Several first trapezoidal grooves (103) are opened on the lower surface of the first flange (10). The upper surface of the second flange (11) is connected to the first trapezoidal groove. A second trapezoidal groove (112) is provided at the corresponding position of the groove (103). A second fixing hole (110) is provided at the corresponding position of the upper surface of the second flange (11) and the first fixing hole (102). A positioning post (12) is provided between the first trapezoidal groove (103) and the second trapezoidal groove (112). A second trapezoidal block (111) is provided on the inner wall of the second flange (11) at the corresponding position of the first trapezoidal block (101). A fastening ring (2) is fitted on the outer wall of the convex ring (100). A number of support blocks (20) are provided on the outer wall of the fastening ring (2).

2. The low-temperature resistant flange according to claim 1, characterized in that: The flange (1) has a pipe (4) in the middle, and a slot (40) is provided on the top of the outer wall of the pipe (4) corresponding to the first trapezoidal block (101).

3. The low-temperature resistant flange according to claim 2, characterized in that: The width of the inner wall of the slot (40) is adapted to the width of the outer wall of the second trapezoidal block (111) and the first trapezoidal block (101).

4. The low-temperature resistant flange according to claim 1, characterized in that: The bottom of the convex ring (100) is welded and fixed to the top of the first flange (10). The inner diameter of the clamping ring (2) is adapted to the outer diameter of the convex ring (100). The inner wall of the clamping ring (2) is welded and fixed to the convex ring (100). The support blocks (20) are distributed in a ring at equal intervals. The support blocks (20) and the clamping ring (2) are integrally formed.

5. The low-temperature resistant flange according to claim 1, characterized in that: The outer diameter of the second flange (11) is adapted to the outer diameter of the first flange (10). The first trapezoidal block (101) and the first flange (10) are integrally formed. The second trapezoidal block (111) and the second flange (11) are integrally formed. The inner diameter of the first fixing hole (102) is adapted to the inner diameter of the second fixing hole (110).

6. The low-temperature resistant flange according to claim 1, characterized in that: The positioning post (12) is formed by two trapezoidal posts combined in opposition. The width of the outer wall of the positioning post (12) is adapted to the width of the inner wall of the space formed by the combination of the second trapezoidal groove (112) and the first trapezoidal groove (103).

7. The low-temperature resistant flange according to claim 1, characterized in that: The inner wall of the rubber sleeve (3) is provided with an annular groove (30), the inner diameter of the annular groove (30) is adapted to the outer diameter of the first flange (10) and the second flange (11), a through hole (31) is provided on the rubber sleeve (3) corresponding to the second fixing hole (110), and a through groove (32) is provided on the rubber sleeve (3) corresponding to the support block (20).

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