Flange joint convenient to install

Abstract

The utility model discloses a flange joint convenient to install, which comprises a connecting pipe and a flange plate fixedly connected with the connecting pipe, the outer side of the flange plate is provided with a step-shaped boss, the boss is rotatably connected with an annular installation block through a swivel bearing, and the periphery of the installation block is provided with a plurality of screw holes; an annular fixing ring is connected to the side, close to the flange plate, of the connecting pipe, an elastic protective cover is connected to the fixing ring, and a circle of rubber band is arranged at an opening of the protective cover. When two fixed pipelines are in butt joint, the mounting blocks on the periphery of the flange plate can be rotated to enable the screw holes in the mounting blocks to be aligned with the screw holes of the flanges to be in butt joint, and then bolts penetrate through the screw holes of the two flanges, so that the two flanges are fixed, the pipelines do not need to be rotated, the flanges do not need to be taken down from the pipelines, and the mounting efficiency of the two flanges is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flange technical field, concretely is a flange joint convenient to installation. BACKGROUND

[0002] Flange is the key component that connects pipeline and valve, equipment or other pipeline. It provides a sealed and structurally stable connection, so that the pipeline system can be safely and effectively operated. The traditional flange connection has the following defects: (1) the two pipelines to be connected are fixed with flanges, the two pipelines need to be connected through the flanges, and the holes of the two flanges cannot be aligned during installation. The flanges are fixed on the pipelines and cannot be rotated in the direction, that is, the holes of the two flanges cannot be aligned, so the fixation of the two flanges cannot be realized; (2) after the pipeline is connected through the flange, the flange is exposed for a long time, the bolts and the sealing ring are easy to weather or corrode, which reduces the service life. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides a flange joint convenient to install to solve the problems mentioned in the background.

[0004] To solve the above technical problems, the utility model provides the following technical scheme:

[0005] A flange joint convenient to install, comprising a connecting pipe, a flange disc fixedly connected with the connecting pipe, a stepped boss provided on the outer side of the flange disc, an annular mounting block rotatably connected with the boss through a rotary bearing, and a plurality of screw holes provided on the periphery of the mounting block; an annular fixing ring is connected to the side of the connecting pipe close to the flange disc, an elastic protective cover is connected to the fixing ring, and a ring of rubber bands is provided at the opening of the protective cover.

[0006] Preferably, the outer edge of the flange disc is provided with two annular sliding grooves, the cross section of the sliding grooves is circular, the two sliding grooves are located on the two sides of the rotary bearing, two annular sliding blocks are fixedly connected to the outer wall of the mounting block, the cross section of the sliding blocks is also circular, the sliding blocks are slidingly arranged in the corresponding sliding grooves, and a sealing sleeve is arranged in the sliding groove and covers the periphery of the sliding block.

[0007] Through the above technical scheme, when the mounting block rotates along the flange through the rotary bearing, the sliding blocks slide in the sliding grooves. Since the cross sections of the sliding blocks and the sliding grooves are circular, the stability of the rotation of the mounting block is improved, and the mounting block can be effectively prevented from falling off the flange disc.

[0008] Preferably, the end face of the flange disc away from the connecting pipe is provided with a first sealing ring with a trapezoidal cross section.

[0009] Through the technical scheme, the sealing property of the flange plate after being connected with the adjacent flange can be improved through the first sealing ring.

[0010] Preferably, two annular positioning grooves are formed on the connecting pipe.

[0011] Through the technical scheme, the connecting pipe can be fixed with the external pipeline through the clamp after being connected with the external pipeline.

[0012] Preferably, a second sealing ring is arranged on the connecting pipe between the two positioning grooves.

[0013] Through the technical scheme, the sealing property of the connecting pipe after being connected with the external pipeline can be improved through the second sealing ring.

[0014] Preferably, a plurality of reinforcing ribs are arranged on the end face of the flange plate close to the connecting pipe.

[0015] Through the technical scheme, the structural strength of the flange plate can be improved through the reinforcing ribs, and the service life is prolonged.

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

[0017] (1) when two fixed pipelines are butt-jointed, the mounting block around the flange plate is rotated to align the screw holes on the mounting block with the screw holes of the butt-jointed flange, and then the bolt is passed through the screw holes of the two flanges, so that the two flanges are fixed, without rotating the pipeline or taking the flange off the pipeline, and the installation efficiency of the two flanges is improved.

[0018] (2) after the two flanges are fixed, the protective cover is opened and wrapped around the butt-jointed flange, and is tightly bound on the flange through the action of the rubber band, so that the two flanges are protected, the bolt or the sealing ring is prevented from weathering or corrosion, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic view of the utility model;

[0020] Figure 2 is a schematic view of another direction of the utility model;

[0021] Figure 3 is a sectional view of the utility model;

[0022] Figure 4 is a schematic view of the utility model after being butt-jointed with another flange;

[0023] In the figure: 1- connecting pipe, 2- flange plate, 3- boss, 4- rotary bearing, 5- mounting block, 6- screw hole, 7- fixing ring, 8- protective cover, 9- rubber band, 10- sliding groove, 11- sliding block, 12- first sealing ring, 13- positioning groove, 14- second sealing ring, 15- reinforcing rib, 16- sealing sleeve. DETAILED DESCRIPTION

[0024] 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.

[0025] Embodiment 1

[0026] Please refer to Figures 1-4 A flange joint convenient to install, comprising a connecting pipe 1 and a flange plate 2 fixedly connected with the connecting pipe 1, wherein the connecting pipe 1 and the flange plate 2 can be fixed together by welding, the outer side of the flange plate 2 is provided with a stepped boss 3, the boss 3 is rotatably connected with a ring-shaped mounting block 5 through a rotary bearing 4, and a plurality of screw holes 6 are formed in the periphery of the mounting block 5. By rotating the mounting block 5, the position of the screw holes 6 thereon can be adjusted, so as to be aligned with the screw holes on the flange to be installed, thereby improving the installation efficiency.

[0027] In the embodiment, the outer side edge of the flange plate 2 is provided with two ring-shaped sliding grooves 10, the cross section of the sliding groove 10 is circular, the two sliding grooves 10 are located on the two sides of the rotary bearing 4, the outer wall of the mounting block 5 is fixedly connected with two ring-shaped sliding blocks 11, the cross section of the sliding block 11 is also circular, the sliding block 11 is slidingly arranged in the corresponding sliding groove 10, a sealing sleeve 16 is arranged in the sliding groove 10, and the sealing sleeve 16 covers the periphery of the sliding block 11. When the mounting block 5 rotates along the flange plate 2 through the rotary bearing 4, the sliding block 11 slides in the sliding groove 10. Since the cross sections of the sliding block 11 and the sliding groove 10 are circular, the stability of the rotation of the mounting block 5 is improved, and the mounting block 5 can be effectively prevented from falling off the flange plate 2.

[0028] In the embodiment, the end face of the flange plate 2 away from the one end of the connecting pipe is provided with a first sealing ring 12 with a trapezoidal cross section. Through the arrangement of the first sealing ring 12, the sealing performance after the flange plate 2 is connected with the adjacent flange can be improved.

[0029] In the embodiment, two positioning grooves 13 in annular shape are formed on the connecting pipe 1. After the connecting pipe 1 is connected with the external pipeline, a clamp can be installed in the positioning groove 13 to fix the external pipeline and the connecting pipe 1 through the clamp. The second sealing ring 14 is arranged between the two positioning grooves on the connecting pipe 1. The sealing performance of the external pipeline and the connecting pipe 1 after being connected can be improved by arranging the second sealing ring 14.

[0030] In the embodiment, the fixing ring 7 in annular shape is connected to the side of the connecting pipe 1 close to the flange. The elastic protective cover 8 is connected to the fixing ring 7. The opening of the protective cover 8 is provided with a ring of rubber bands 9. The protective cover 9 is made of synthetic rubber, such as neoprene (CR), silicone rubber (SiR), fluororubber (FKM) and ethylene propylene diene rubber (EPDM). The synthetic rubber has excellent deformation recovery ability and is resistant to ultraviolet rays, ozone and temperature fluctuation, and is weather-resistant and corrosion-resistant.

[0031] The installation method of the utility model is as follows:

[0032] When the two fixed pipelines are butt-jointed, the flanges on the two pipelines are overlapped, the flanges to be butt-jointed are kept fixed, the mounting block 5 around the flange plate 2 is rotated, the screw holes 6 on the mounting block 5 are aligned with the screw holes of the flanges to be butt-jointed, the bolts are passed through the screw holes of the two flanges, and thus the two flanges are fixed. The pipeline does not need to be rotated, and the flange does not need to be removed from the pipeline, and thus the installation efficiency of the two flanges is improved. After the two flanges are fixed, the protective cover 8 is opened and covers the flanges to be butt-jointed, and is tightened on the flanges to be butt-jointed through the action of the rubber bands 9, and thus the two flanges are protected, the bolts or the sealing ring are prevented from weathering or corrosion, and the service life is prolonged.

[0033] When the protective cover 8 covers the two flanges, the protective cover 8 can also be tied on the pipeline through the tightening belt to prevent the protective cover from retracting.

[0034] Embodiment 2

[0035] On the basis of embodiment 1, the end face of the flange plate 2 close to one end of the connecting pipe is provided with a plurality of reinforcing ribs 15. The structural strength of the flange plate 2 is improved through the arrangement of the reinforcing ribs 15, and the service life is prolonged.

[0036] The linear vibrator in the embodiment, i.e. the linear vibration machine, is a commonly used vibration equipment. The linear vibrator mainly comprises a vibration motor, an exciter, a damping spring and a base. When working, the vibration motor generates a rotary torque, which is transmitted to the exciter through a transmission device. The exciter converts the rotary motion into linear vibration, so that the machine body and the material produce vibration with the same frequency and amplitude, and realize the functions of conveying, screening, lifting and compacting of the material. The linear vibrator is prior art, and will not be described in detail in the embodiment.

[0037] It is to be understood that the terms "including", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0038] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A flange joint for ease of installation, characterised in that: The utility model relates to a connecting pipe (1), flange plate (2) fixed connection with connecting pipe (1), the outside of flange plate (2) is equipped with stepped boss (3), the boss (3) is rotatably connected with the mounting block (5) of annular through rotary bearing (4), and the periphery of mounting block (5) is provided with a plurality of screw holes (6), the connecting pipe (1) is connected with the fixed ring (7) of annular near flange plate side, and the fixed ring (7) is connected with the protection cover (8) of elasticity, and the opening of protection cover (8) is equipped with a circle of rubber band (9).

2. A flange joint for ease of installation according to claim 1, characterized in that: The outer edge of the flange plate (2) is provided with two annular sliding grooves (10), the cross section of the sliding groove (10) is circular, the two sliding grooves (10) are located on both sides of the rotary bearing (4), the outer wall of the mounting block (5) is fixedly connected with two annular sliding blocks (11), the cross section of the sliding block (11) is also circular, the sliding block (11) is slidably arranged in the corresponding sliding groove (10), and the sliding groove (10) is provided with a sealing sleeve (16) covering the periphery of the sliding block (11).

3. A flange joint for ease of installation according to claim 2, characterised in that: The end face of the flange plate (2) away from the connecting pipe is provided with a first sealing ring (12) with a trapezoidal cross section.

4. A flange joint for ease of installation according to claim 3, characterised in that: Two annular positioning grooves (13) are formed in the connecting pipe (1).

5. A flange joint for ease of installation according to claim 4, characterised in that: The connecting pipe (1) is provided with a second sealing ring (14) between the two positioning grooves.

6. A flange joint for ease of installation according to claim 5, characterised in that: The end face of the flange plate (2) near the connecting pipe is provided with a plurality of reinforcing ribs (15).

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