Flange for chemical pipeline

Abstract

The utility model discloses a flange for a chemical pipeline, and relates to the technical field of flanges. The device comprises a left flange and a right flange, mounting blocks are fixedly connected to the upper side and the lower side of the right flange, the mounting blocks are rotationally connected with a protection mechanism through rotating shafts, the protection mechanism comprises an anti-sputtering shell, a connecting piece is clamped and fixed to one side of the anti-sputtering shell through a clamping block, a fixing piece is welded to one end of the connecting piece, and the fixing piece is connected with the anti-sputtering shell through a rotating shaft. According to the utility model, through the arrangement of the protection mechanism, an additional protection layer is provided for the connection of the left flange and the right flange, and the anti-sputtering shell is rotated, so that the fixing sheet at one end of the anti-sputtering shell can be inserted into the bolt, the installation process is simplified, and the protection mechanism can be firmly attached to the flanges; the nut is arranged on the fixing piece, so that the nut can tightly press the fixing piece, the left flange and the right flange are tightly connected into a whole, the stability of flange connection is enhanced, and installation of the protection mechanism is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of flanges, in particular to a flange for chemical pipelines. Background Art

[0002] Flange is also called flange flange or flange. Flange is a part that connects pipes to each other and is used for connection between pipe ends. It is also useful for flanges on equipment inlets and outlets, used for connection between two devices, such as reducer flange. Flange connection or flange joint refers to a detachable connection composed of flanges, gaskets and bolts connected to each other as a combined sealing structure. Pipe flange refers to the flange used for piping in pipeline installations. It is used on equipment to refer to the inlet and outlet flanges of the equipment. There are holes on the flange, and the bolts connect the two flanges tightly. The flanges are sealed with gaskets. Flanges are divided into threaded flanges, welding flanges and clamping flanges. Flanges are used in pairs. Threaded flanges can be used for low-pressure pipelines, and welding flanges can be used for pressures above four kilograms.

[0003] In order to prevent acid and alkali leakage caused by corrosion at the flange joints, existing chemical pipeline flanges generally use flange protection sleeves to protect the flange joints. However, this protection sleeve is generally two different devices from the flange body, so after the flange is installed, the protection sleeve needs to be installed and fixed separately, which involves many steps and is not conducive to improving the overall installation efficiency. Utility Model Content

[0004] Based on this, the purpose of the present invention is to provide a flange for a chemical pipeline to solve the technical problem that a protective sleeve needs to be separately installed and fixed after the flange is installed.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a flange for a chemical pipeline, comprising a left flange and a right flange, wherein the upper and lower sides of the right flange are fixedly connected to mounting blocks, the mounting block is rotatably connected to a protective mechanism via a rotating shaft, the protective mechanism comprises a splash-proof shell, one side of the splash-proof shell is fixed with a connecting plate via a clamping block, one end of the connecting plate is welded with a fixing plate, and the fixing plate is fixedly connected with locking tongues around it.

[0006] By adopting the above technical solution, the left flange and the right flange are firmly connected through the cooperation of bolts and nuts, ensuring the safety and sealing of the chemical pipeline system. The splash-proof shell in the protective mechanism can effectively block the impact of the leakage of corrosive media on the outside world.

[0007] Furthermore, three connecting plates and three fixing plates are provided, and the three connecting plates and three fixing plates are arranged opposite to the upper three bolt holes on the right flange.

[0008] By adopting the above technical solution, three connecting plates and three fixing plates are provided, and they are arranged opposite to the three bolt holes on the right flange, ensuring full coverage and secure installation of the protection mechanism at the flange connection. Each connecting plate and fixing plate can cooperate with the corresponding bolt hole, so that the protection mechanism can be reliably locked, providing more balanced and comprehensive protection.

[0009] Furthermore, two groups of the protection mechanisms are provided, and the two groups of the protection mechanisms are provided in a mirror-image structure, and both ends of the anti-splash shell are fixedly connected with rubber sheets.

[0010] By adopting the above technical solution, the protection mechanism is set into two groups, and the two groups of protection mechanisms are set in a mirror structure, so that the upper and lower sides of the flange connection can be effectively protected, avoiding external corrosion and leakage problems caused by insufficient protection on one side.

[0011] Furthermore, the left flange and the right flange are fixedly connected by bolts and nuts, and six bolts and nuts are provided, and the six bolts and nuts are evenly arranged in a ring shape.

[0012] By adopting the above technical solution, the left flange and the right flange are fixedly connected by bolts and nuts. This connection method is simple and reliable, easy to operate and maintain. The coordinated use of bolts and nuts can generate sufficient clamping force to ensure a tight fit between the left flange and the right flange, thereby ensuring the sealing and safety of the chemical pipeline system.

[0013] Furthermore, the anti-splash shell is a semicircular shell, and the material of the anti-splash shell is polypropylene.

[0014] By adopting the above technical solution, the splash-proof shell is a semicircular shell that can fit tightly around the periphery of the flange connection to form an effective protective barrier, which can minimize the erosion of corrosive media to the outside world, thereby providing reliable protection for the outside world and personnel.

[0015] Furthermore, a mounting groove is provided on the anti-splash shell, and an observation piece is bonded inside the mounting groove.

[0016] By adopting the above technical solution, an installation groove is opened on the anti-splash shell, which provides a convenient and stable position for the installation of the observation piece, ensuring that the observation piece can be firmly adhered to the anti-splash shell and is not easy to fall off, and also forms a tight seal between the observation piece and the anti-splash shell to prevent the penetration of corrosive media.

[0017] Furthermore, the material of the observation piece is polyvinyl chloride, and the observation piece has an arc-shaped structure.

[0018] By adopting the above technical solution, polyvinyl chloride is a material with excellent transparency, corrosion resistance and mechanical strength. Its transparency enables workers to clearly observe the internal conditions of the flange connection and detect leaks or other abnormalities in time. The corrosion resistance of polyvinyl chloride can ensure that the observation piece can still maintain good performance when exposed to corrosive media for a long time, thereby extending its service life.

[0019] In summary, the present invention has the following beneficial effects:

[0020] 1. The utility model provides an additional protective layer for the connection of the left flange and the right flange by setting a protective mechanism. After the left flange and the right flange are spliced together, the connecting bolts are inserted to ensure the basic connection of the flanges. The anti-splash shell is rotated so that the fixing plate at one end thereof can be inserted into the bolt, which simplifies the installation process and enables the protective mechanism to be firmly attached to the flange. The nut is tightened so that the nut can press the fixing plate and tightly connect the left flange and the right flange into a whole, which not only enhances the stability of the flange connection, but also completes the installation of the protective mechanism, so that the flange connection is effectively protected. The lock tongue is bent so that it can lock the nut, thereby achieving the anti-loosening effect of the nut and further ensuring the reliability and anti-splashing effect of the flange connection.

[0021] 2. The utility model provides a way for staff to directly observe the internal conditions of the flange connection by setting an observation piece. The design of the observation piece allows staff to easily check the status of the flange connection without removing the splash shield or other components, greatly improving the inspection efficiency. The transparent observation piece made of polyvinyl chloride ensures the clarity and accuracy of observation. The transparency of polyvinyl chloride enables staff to clearly see the details inside the flange connection, including whether there are leaks, corrosion or other abnormal conditions, so that staff can discover potential safety hazards more quickly and take timely measures to deal with them, thereby ensuring the safety and stability of the chemical pipeline system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the rear-view stereoscopic structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the exploded three-dimensional structure of the utility model;

[0025] Figure 4 It is a partial enlarged structural schematic diagram of the utility model;

[0026] Figure 5This is a schematic diagram of the three-dimensional structure of the second embodiment of the present utility model.

[0027] In the figure: 1. Left flange; 2. Right flange; 3. Mounting block; 4. Rotating shaft; 5. Protective mechanism; 501. Splash-proof shell; 502. Connecting plate; 503. Fixing plate; 504. Lock tongue; 505. Rubber sheet; 506. Block; 6. Bolt; 9. Nut; 7. Mounting slot; 8. Observation piece. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] The following describes an embodiment of the present invention based on its overall structure.

[0030] Example 1:

[0031] A flange for chemical pipelines, such as Figure 1-Figure 5 As shown, it includes a left flange 1 and a right flange 2, and the upper and lower sides of the right flange 2 are fixedly connected with mounting blocks 3, and the mounting block 3 is rotatably connected to a protective mechanism 5 through a rotating shaft 4. The protective mechanism 5 includes a splash-proof shell 501, and a connecting piece 502 is fixed on one side of the splash-proof shell 501 through a clamping block 506. A fixing piece 503 is welded at one end of the connecting piece 502, and a locking tongue 504 is fixedly connected around the fixing piece 503. The connecting piece 502 fixed on one side of the splash-proof shell 501 through the clamping block 506 and the fixing piece 503 welded at one end of the connecting piece 502 enable the protective mechanism 5 to be firmly mounted on the flange and not easy to fall off. The locking tongue 504 fixedly connected around the fixing piece 503 cooperates with the nut 9 to enhance the anti-loosening ability of the nut 9 and prevent loosening due to vibration or external force.

[0032] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 There are three connecting plates 502 and three fixing plates 503, and the three connecting plates 502 and the fixing plates 503 are arranged relative to the upper three bolt holes on the right flange 2. The three connecting plates 502 and the fixing plates 503 also increase the contact area and connection points between the protection mechanism 5 and the flange, thereby improving the stability and reliability of the connection. When subjected to external force or vibration, multiple connection points and contact areas can disperse and withstand force, reducing the risk of loosening or damage caused by single-point force.

[0033] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 There are two groups of protection mechanisms 5, and the two groups of protection mechanisms 5 are arranged in a mirror structure. Both ends of the anti-splash shell 501 are fixedly connected with rubber sheets 505. Both ends of the anti-splash shell 501 are fixedly connected with rubber sheets 505. The rubber sheets 505 have good elasticity and sealing properties, and can effectively prevent corrosive media from seeping out from the gaps in the anti-splash shell 501, thereby further enhancing the protection effect.

[0034] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The left flange 1 and the right flange 2 are fixedly connected by bolts 6 and nuts 9. There are six bolts 6 and nuts 9, and the six bolts 6 and nuts 9 are evenly arranged in a ring. There are six bolts 6 and nuts 9, and these six bolts 6 and nuts 9 are evenly arranged in a ring, so that the force at the flange connection is more uniform, and the six bolts 6 and nuts 9 simultaneously lock the anti-splash shell 501, providing a fixing method for the anti-splash shell 501, avoiding the subsequent separate fixing of the anti-splash shell 501, and improving the operating efficiency.

[0035] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The anti-splash shell 501 is a semicircular shell. The material of the anti-splash shell 501 is polypropylene. The material of the anti-splash shell 501 is polypropylene. Polypropylene is a material with excellent corrosion resistance, light weight and high strength. It can effectively resist the erosion of various corrosive media such as acids and alkalis, and protect the outside world from damage.

[0036] The implementation principle of the present invention is: first, the left flange 1 and the right flange 2 are spliced together, and then the connecting bolts 6 are inserted, and then the anti-splash shell 501 is rotated so that the fixing plate 503 at one end of the anti-splash shell 501 can be inserted into the bolt 6, and then the nut 9 is tightened so that the nut 9 can press the fixing plate 503 and connect the left flange 1 and the right flange 2 into a whole. At this time, the installation of the protection mechanism 5 is completed, and then the locking tongue 504 is bent so that the locking tongue 504 can lock the nut 9, thereby achieving the anti-loosening effect of the nut and making the flange itself have an anti-splashing effect.

[0037] Example 2:

[0038] See Figure 5An installation groove 7 is provided on the anti-splash shell 501, and an observation piece 8 is bonded to the inside of the installation groove 7. The observation piece 8 is made of transparent polyvinyl chloride material, which enables the staff to easily observe the internal situation of the flange connection through the observation piece 8. During the inspection or inspection process, once a leak or other abnormal situation is found, the staff can immediately take measures to deal with it, thereby ensuring the safety and stability of the chemical pipeline system.

[0039] See Figure 5 The material of the observation piece 8 is polyvinyl chloride, and the observation piece 8 has an arc-shaped structure. The observation piece 8 enables the observation piece 8 to better fit the shape of the anti-splash shell 501, reducing gaps or holes caused by shape mismatch. The arc-shaped observation piece 8 is not only beautiful and elegant, but also improves the accuracy and comprehensiveness of observation, allowing staff to more accurately judge the status of the flange connection.

[0040] The implementation principle of the present invention is as follows: first, by using a transparent observation piece 8 made of polyvinyl chloride on the anti-splash shell 501, the staff can observe whether there is leakage inside through the observation piece 8 during the inspection process, so as to find the leakage more quickly.

[0041] Parts not involved in the present invention are the same as those in the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0042] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A flange for chemical pipelines, characterized by: The invention comprises a left flange (1) and a right flange (2), wherein the upper and lower sides of the right flange (2) are fixedly connected to mounting blocks (3), the mounting blocks (3) are rotatably connected to a protection mechanism (5) via a rotating shaft (4), and the protection mechanism (5) comprises a splash-proof shell (501), a connecting piece (502) is fixedly engaged with a clamping block (506) on one side of the splash-proof shell (501), a fixing piece (503) is welded to one end of the connecting piece (502), and a locking tongue (504) is fixedly connected to the surrounding of the fixing piece (503).

2. The flange for chemical pipeline according to claim 1, characterized in that: There are three connecting plates (502) and three fixing plates (503), and the three connecting plates (502) and three fixing plates (503) are arranged opposite to the upper three bolt holes on the right flange (2).

3. The flange for chemical pipeline according to claim 1, characterized in that: Two groups of the protection mechanisms (5) are provided, and the two groups of the protection mechanisms (5) are arranged in a mirror image structure. Both ends of the anti-splash shell (501) are fixedly connected with rubber sheets (505).

4. The flange for chemical pipeline according to claim 1, characterized in that: The left flange (1) and the right flange (2) are fixedly connected by bolts (6) and nuts (9), and six bolts (6) and nuts (9) are provided. The six bolts (6) and nuts (9) are evenly arranged in a ring shape.

5. The flange for chemical pipeline according to claim 1, characterized in that: The anti-splash shell (501) is a semicircular shell, and the material of the anti-splash shell (501) is polypropylene.

6. The flange for chemical pipeline according to claim 1, characterized in that: The anti-splash shell (501) is provided with a mounting groove (7), and an observation piece (8) is bonded inside the mounting groove (7).

7. The flange for chemical pipeline according to claim 6, characterized in that: The material of the observation piece (8) is polyvinyl chloride, and the observation piece (8) has an arc-shaped structure.

Images