Split type flange joint and steel wire air pipe for air compressor

Abstract

The utility model discloses a split type flange joint and a steel wire air pipe for an air compressor, and relates to the technical field of air compressor equipment, the split type flange joint comprises a buckling joint and an adjusting clamping sleeve, two ends of the buckling joint are respectively connected with an interface of the air compressor and the steel wire air pipe, and the adjusting clamping sleeve is movably sleeved on the periphery of the buckling joint. And the pressing joint is fixedly connected with the interface flange and is pressed towards the interface. And split flange joints are arranged at two ends of the steel wire air pipe. According to the split type flange joint, a conventional integrated flange joint is improved into the split type flange joint comprising the buckling joint and the adjusting clamping sleeve, during installation, after the position of the adjusting clamping sleeve corresponds to the position of the interface flange, the buckling joint can be rotated according to needs, and the angle of the buckling joint can be freely adjusted within 360 degrees; and after the requirement is met, the adjusting clamping sleeve and the interface flange are locked, so that the limitation on the mounting angle of the flange joint is relieved, the mounting difficulty is reduced, and the more strict spatial layout requirement can be further met.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressor equipment, in particular to a split flange joint and a steel wire air pipe used for an air compressor. Background Art

[0002] The electrolytic multifunctional overhead crane is a key equipment for large-scale pre-baked anode aluminum electrolysis production in the electrolytic workshop. The air compressor is an important part of the multifunctional overhead crane as the power source for aluminum discharging, shelling and grabbing. The steel wire air pipe connecting the oil and gas separation tank with the air cooler and the machine head is mainly used to transmit compressed air and compressed oil and gas mixture. Its quality directly affects the operating efficiency of the air compressor.

[0003] Due to the influence of spatial layout, the pipe joints of the steel wire bellows connecting the oil and gas separation tank with the air cooler and the machine head need to be set at an angle, and the air cooler that matches the steel wire bellows also needs to be set at a corresponding angle. The matching accuracy of the steel wire bellows and the air cooler depends on the manufacturing accuracy of the steel wire bellows and the air cooler joints. Since the material of the air cooler is aluminum product technology, its angle is difficult to guarantee during the processing and manufacturing process. The working environment of the air compressor is a harsh environment of high temperature, high dust, and corrosive gas. The inside of the steel wire bellows is a corrugated stainless steel thin tube, and the outside is wrapped with braided steel wire. Under the action of high-pressure gas, the internal bellows expands and deforms, resulting in barbs on the outer braided steel wire. Under repeated action, the outer braided steel wire collapses. If there is no outer braided steel wire wrapping restriction, the inner stainless steel tube will swell, burst, and leak. The burst of the steel wire bellows air pipe causes the air compressor lubricating oil in the oil-gas separation tank to leak. The reduction of the air compressor oil level causes the air compressor head to lack oil, causing the air compressor head oil temperature high temperature alarm shutdown failure, affecting the air compressor operation efficiency. Therefore, the steel wire bellows needs to be replaced frequently and in time. In daily assembly, due to limited space, manufacturing errors in the angle of the steel wire bellows and the air cooler joint, and the fixed and unadjustable angle of the joint flange, the installation and replacement of the steel wire bellows is difficult and the labor cost is high. Utility Model Content

[0004] The utility model aims to provide a split flange joint and a steel wire air pipe for an air compressor, so as to solve the problems existing in the above-mentioned prior art, reduce the difficulty of installation and replacement of the steel wire air pipe, and save labor costs.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] A split flange joint for an air compressor, the air compressor is provided with an interface for communicating with a steel wire air pipe, an interface flange is provided on the outer periphery of the interface, the split flange joint comprises a crimping joint and an adjusting sleeve, the two ends of the crimping joint are respectively connected to the interface and the steel wire air pipe, the adjusting sleeve is movably sleeved on the outer periphery of the crimping joint and is located at the end of the crimping joint away from the interface, the adjusting sleeve is used to be fixedly connected to the interface flange and press the crimping joint to the interface.

[0007] Preferably, an end of the crimping connector close to the interface is provided with an outer step abutting against the adjusting sleeve, and the adjusting sleeve is provided with an inner step matched with the outer step.

[0008] Preferably, the interface flange is provided with a first connecting hole, and the adjusting sleeve is provided with a second connecting hole corresponding one-to-one to the first connecting hole.

[0009] Preferably, two ends of the crimping connector are arranged at an angle.

[0010] Preferably, the crimping joint is in an L-shaped structure.

[0011] Preferably, a sealing groove is provided on the plane where the crimping connector and the interface are butted against each other, and a sealing ring is provided in the sealing groove.

[0012] The utility model also provides a steel wire air pipe, both ends of which are provided with the split flange joints.

[0013] Preferably, the steel wire air pipe comprises a soft rubber tube, a steel wire tube and an industrial woven cloth which are sequentially arranged from the inside to the outside.

[0014] Preferably, both ends of the steel wire air pipe are provided with connecting parts connected to the split flange joint.

[0015] Preferably, the split flange joint is connected to the connecting portion by welding.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] By improving the conventional one-piece flange joint into a split flange joint including a crimping joint and an adjusting sleeve, the joint flange fixedly connected to the interface flange is improved into an adjusting sleeve movably sleeved on the outer periphery of the crimping joint. During installation, after the adjusting sleeve and the interface flange are aligned, the crimping joint can be rotated as needed, and the angle of the crimping joint can be adjusted within 360°. After the needs are met, the adjusting sleeve and the interface flange are locked, and the crimping joint is pressed against the equipment interface to complete the installation. This setting removes the limitation of the installation angle of the flange joint, thereby reducing the difficulty of installation and further meeting more stringent space layout requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic structural diagram of a split flange joint for an air compressor disclosed in Example 1;

[0020] Figure 2 for Figure 1 A cross-sectional view of

[0021] Figure 3 It is a schematic diagram of the structure of the steel wire air pipe disclosed in the second embodiment;

[0022] Among them, 1. Split flange joint; 2. Crimp joint; 3. Adjustment sleeve; 4. Second connecting hole; 5. External step; 6. Internal step; 7. Sealing groove; 8. Steel wire air pipe. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0024] The utility model aims to provide a split flange joint and a steel wire air pipe for an air compressor, so as to solve the problems existing in the prior art, reduce the difficulty of installing and replacing the steel wire corrugated pipe, and save labor costs.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Embodiment 1

[0027] Please refer to Figure 1 to Figure 2 The present embodiment provides a split flange joint for an air compressor. The air compressor is provided with an interface for communicating with a steel wire air pipe 8. An interface flange is provided on the periphery of the interface. The split flange joint 1 includes a crimping joint 2 and an adjusting sleeve 3. The two ends of the crimping joint 2 are respectively connected to the interface of the air compressor and the steel wire air pipe 8. The adjusting sleeve 3 is movably sleeved on the periphery of the crimping joint 2 and is located at the end of the crimping joint 2 away from the interface of the air compressor. The adjusting sleeve 3 is used to be fixedly connected with the interface flange provided on the periphery of the interface to press the crimping joint 2 toward the direction of the interface.

[0028] The working principle of this embodiment is:

[0029] The traditional flange joint is the same as the interface set on the air compressor. A joint flange is integrally set on the outer circumference. The interface flange and the joint flange are provided with corresponding connection holes. The number of connection holes is usually two, three or more evenly distributed in the circumference. When installing, the connection holes of the two need to correspond one to one. The other end of the flange joint is usually fixedly connected to one end of the steel wire air pipe 8. The other end of the steel wire air pipe 8 also needs to be connected to another flange joint connected to another interface. In this way, when the connection hole of the flange joint at one end of the steel wire air pipe 8 corresponds to the position of the connection hole on the interface flange, the angle of the flange joint at the other end is fixed. When connected to another interface, the position of the connection hole on the interface flange must correspond to the joint flange, otherwise the installation cannot be completed, which creates a great limitation. In addition, even if the design positions of the connection holes on the two flanges correspond, it will cause installation difficulties in actual applications due to reasons such as processing accuracy.

[0030] In addition, due to the influence of spatial layout, the pipe joint of the steel wire bellows connecting the oil-gas separation tank with the air cooler and the head of the air compressor needs to be set at an angle, and the air cooler matched with the steel wire bellows also needs to be set at a corresponding angle. At this time, it is necessary to make the joint of the corresponding end of the steel wire air pipe 8 into an L-shaped structure. After the joint flange on one side of the L-shaped structure is fixed with the interface flange, due to the position limitation of the connecting hole, the angle of the other side of the L-shaped structure relative to the horizontal line is α, and its adjustable range is, when the number of connecting holes is two, the optional angles are α and α+180°, when the number of connecting holes is three, the optional angles are α, α+120° and α-120°, and so on. This leads to great restrictions on the installation of the steel wire air pipe 8, which in turn leads to the inability to meet the requirements of the spatial layout, or the space occupied is increased in order to achieve installation. At the same time, since the interface position of the air compressor is generally located in a space with a very small range of movement, the position of the staff when working in a very small space is already relatively large, and the limitation of the installation angle of the flange joint further increases the difficulty of installation.

[0031] This embodiment improves the conventional one-piece flange joint into a split flange joint 1 including a crimping joint 2 and an adjusting sleeve 3, and improves the joint flange fixedly connected to the interface flange into an adjusting sleeve 3 movably sleeved on the outer periphery of the crimping joint 2. During installation, after the adjusting sleeve 3 and the interface flange are aligned, the crimping joint 2 can be rotated as needed, and the angle of the crimping joint 2 can be adjusted within 360°. After the needs are met, the adjusting sleeve 3 is locked with the interface flange, and the crimping joint 2 is pressed against the equipment interface to complete the installation. This arrangement removes the limitation on the installation angle of the flange joint, thereby reducing the difficulty of installation and further meeting more stringent space layout requirements.

[0032] Specifically, the end of the crimping joint 2 near the interface is provided with an outer step 5 abutting against the adjusting sleeve 3, and the adjusting sleeve 3 is provided with an inner step 6 adapted to the outer step 5. The connecting hole on the interface flange is the first connecting hole, and the connecting hole on the adjusting sleeve 3 is the second connecting hole 4. When the adjusting sleeve 3 and the interface flange are locked through the first connecting hole, the second connecting hole 4 and the fastener, the inner step 6 pushes the outer step 5 inward, thereby pressing the crimping joint 2 to the interface.

[0033] As a preferred solution of this embodiment, the second connecting hole 4 on the adjusting sleeve 3 is a waist-shaped hole, which further increases the convenience of installation and replacement.

[0034] The crimping connector 2 in this embodiment may be a linear structure, or a structure with two ends arranged at an angle, such as an L-shaped structure.

[0035] The flange surface of the conventional flange joint and the equipment interface is flat. To ensure airtightness, the surface roughness of the plane must be above 0.8. No scratches should occur during transportation and installation, and it is necessary to install paper pads on the flange surface. Before installing the paper pads, in order to ensure the surface roughness and flatness of the flange surface, maintenance workers with benchwork experience are required to grind the installation surface with 8000 mesh oilstones. The paper pads can be installed only after grinding is completed. The debris generated during grinding often contaminates the oil system of the air compressor, making the entire installation process complicated.

[0036] In this embodiment, a sealing groove 7 is opened on the plane where the crimping connector 2 and the interface are connected, and a sealing ring is installed in the sealing groove 7. When the crimping connector 2 is pressed against the interface by adjusting the sleeve 3, sealing is achieved through the sealing ring to ensure air tightness. There is no need to grind the joint plane or install paper pads, which reduces the difficulty of installation.

[0037] In this embodiment, in order to ensure the strength of the crimping connection, the size of the outer step 5 on the crimping joint 2 is set to a small diameter of φ70mm, a large diameter of φ80mm, and a thickness of 10mm, and the size of the inner step 6 on the adjusting sleeve 3 is set to a small diameter of φ72mm, a large diameter of φ82mm, and a thickness of 9mm. According to the pipe diameter of the main pipeline (the inner diameter of the pipe of the crimping joint 2 in this embodiment is 58mm), an O-ring with a specification of 63*3mm is selected, and the size of the sealing groove 7 is a groove depth of 2.5mm (O-ring wire diameter / 1.2), a groove width of 3.9mm (O-ring wire diameter*1.3), and a groove inner diameter of 65.5mm (O-ring*1.04).

[0038] Of course, the above scheme is only an exemplary data scheme provided in this embodiment, and those skilled in the art may adjust the specific data according to actual needs.

[0039] Embodiment 2

[0040] Please refer to Figure 3 This embodiment provides a steel wire air pipe 8 including the split flange joint 1 disclosed in the first embodiment, and both ends of the steel wire air pipe 8 are provided with split flange joints 1. Specifically, the flange joints at both ends of the steel wire air pipe 8 can be both linear structures, or both structures arranged at an angle, or one end can be a linear structure and the other end can be an angled structure, and can be combined at will according to actual needs.

[0041] In this embodiment, the steel wire air pipe 8 adopts a hydraulic steel wire pipe.

[0042] The stainless steel bellows used in the prior art are wrapped with braided steel wire on the outside and corrugated iron pipe on the inside, which has poor ductility. Under the action of high-pressure gas, the inner bellows is prone to expansion and deformation, resulting in barbs on the outer braided steel wire. Under long-term repeated action, the outer braided steel wire collapses. Without the restriction of the outer steel wire wrapping, the inner iron pipe is very likely to rupture and leak.

[0043] The hydraulic steel wire pipe structure used in this embodiment is composed of three layers: the inner layer is a soft rubber tube, which is smooth, has low oil and gas resistance, and a good expansion coefficient; the middle layer is composed of multiple layers of steel wire to ensure the high pressure resistance and pressure resistance level of the pipeline; the outer layer is a multi-layer industrial woven cloth with good ductility, which is not easy to be swollen and detached, reducing the risk of air pipe damage. After the steel wire pipe is replaced with a hydraulic steel wire pipe, the oil and gas resistance is small, the expansion coefficient is good, and the pressure resistance level is high, which can effectively improve the operating efficiency of the air compressor, reduce the time of shutdown and maintenance, and can better adapt to high temperature and high pressure environment.

[0044] In this embodiment, both ends of the steel wire air pipe 8 are provided with connecting parts connected to the split flange joint 1, and the connecting parts are connected to the split flange by welding.

[0045] Before the split flange joint 1 is welded and assembled with the steel wire air pipe 8, the adjusting sleeve 3 should be set on the outer periphery of the buckle joint 2, and then the end of the buckle joint 2 without the inner step 6 should be welded to the connecting part of the steel wire air pipe 8. In order to ensure the air tightness of the pipeline, the appearance of the weld between the connecting part and the buckle joint 2 is required to be free of cracks, pores, slag inclusions, fusion splashes and incomplete penetration; the bite depth is less than 0.5mm, and the weld height should be equal to or less than 1+0.1b (b is the weld width), and not more than 3mm.

[0046] Of course, the split flange joint 1 and the connecting part may also be connected in other ways that can ensure airtightness, such as sealed threaded connection, sealed clamping connection, etc.

[0047] Adaptive changes made according to actual needs are all within the protection scope of this utility model.

[0048] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

Claims

1. A split flange joint for an air compressor, wherein the air compressor is provided with an interface for communicating with a steel wire air pipe, and an interface flange is provided on the periphery of the interface. Features: The split flange joint includes a crimping joint and an adjusting sleeve, wherein both ends of the crimping joint are respectively connected to the interface and the steel wire air pipe, and the adjusting sleeve is movably mounted on the outer periphery of the crimping joint and is located at the end of the crimping joint away from the interface, and the adjusting sleeve is used to be fixedly connected to the interface flange and press the crimping joint to the interface.

2. The split flange joint for an air compressor according to claim 1, Features: An end of the crimping connector close to the interface is provided with an outer step abutting against the adjusting sleeve, and the adjusting sleeve is provided with an inner step matched with the outer step.

3. The split flange joint for an air compressor according to claim 1, Features: The interface flange is provided with a first connecting hole, and the adjusting sleeve is provided with a second connecting hole corresponding to the first connecting hole one by one.

4. The split flange joint for an air compressor according to claim 1, Features: The two ends of the crimping joint are arranged at an angle.

5. The split flange joint for an air compressor according to claim 4, Features: The crimping joint is in an L-shaped structure.

6. The split flange joint for an air compressor according to claim 1, Features: A sealing groove is provided on the plane where the crimping joint and the interface are butted against each other, and a sealing ring is arranged in the sealing groove.

7. A steel wire trachea, Features: Both ends of the steel wire air pipe are provided with the split flange joint described in any one of claims 1-6.

8. The steel wire air pipe according to claim 7, Features: The steel wire air pipe comprises a soft rubber tube, a steel wire tube and an industrial woven cloth which are arranged in sequence from the inside to the outside.

9. The steel wire air tube according to claim 7, Features: Both ends of the steel wire air pipe are provided with connection parts connected to the split flange joint.

10. The steel wire air tube according to claim 9, Features: The split flange joint is connected to the connecting portion by welding.

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