Flange type corrugated pipe joint

Abstract

The utility model relates to the technical field of pipeline joints, and discloses a flange type corrugated pipe joint which comprises a first corrugated pipe joint and a second corrugated pipe joint. According to the flange type corrugated pipe joint, the protection assembly is arranged, compression springs on the left side and the right side push two annular protection frames to be attached to each other, then the two annular protection frames are fixed through cooperation of connecting bolts and connecting nuts, and then a full-wrapping type shielding structure is formed; external environmental factors such as rainwater, dust and corrosive gas are effectively blocked, a nitrile rubber wave-shaped buffer pad on the inner wall of the annular protection frame is tightly attached to the surface of the corrugated pipe, damage to the connector caused by external mechanical collision can be blocked, and a hook and a hook ring are arranged so that the connector can be detached conveniently and rapidly when the connector is detached. And the two annular protection frames are pushed to the two sides and fixed through the hooks and the hook rings, workers can conveniently disassemble the connector, the practicability of the structure is further improved, and the workers can conveniently use the connector.

Description

Technical Field

[0001] This utility model relates to the field of pipe joint technology, specifically a flanged corrugated pipe joint. Background Technology

[0002] A bellows is a tubular elastic sensing element made of foldable corrugated sheets connected along the folding and stretching direction. Bellows are widely used in instruments and meters, mainly as measuring elements of pressure measuring instruments, converting pressure into displacement or force. Bellows have relatively thin walls.

[0003] Traditional bellows joints lack external protective structures, leaving their main body exposed and susceptible to corrosion from environmental factors. This corrosion can damage the joint surface or the installation structure, leading to loosening of the bellows connection. Furthermore, flange joints require manual location and alignment of the mounting holes during installation, which is tedious. Therefore, a flange-type bellows joint is proposed to address these technical issues. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a flanged bellows joint, which offers advantages such as protection of the connector and ease of alignment. It solves the problems of traditional bellows joints, which lack external protective structures and are exposed to external environmental factors, leading to corrosion of the joint surface or installation structure, further damaging the connector and causing loosening of the bellows connection. Furthermore, flanged joints require manual location and alignment of the mounting holes during installation, which is cumbersome.

[0006] (II) Technical Solution

[0007] To achieve the aforementioned purpose of protecting the connector and facilitating alignment, this utility model provides the following technical solution: a flanged bellows joint, comprising a first bellows joint and a second bellows joint. The right side wall of the first bellows joint is provided with an annular sealing rubber ring extending into the interior of the second bellows joint. The left side wall of the first bellows joint is provided with a mounting bolt extending into the right side of the second bellows joint. The number of mounting bolts is four, evenly distributed in a ring. Each mounting bolt has two mounting nuts symmetrically distributed on its exterior. Positioning components are provided on both the front and rear side walls of the first bellows joint, respectively fixedly connected to the front and rear side walls of the second bellows joint. A protective component is provided on the exterior of the first bellows joint and fixedly connected to the exterior of the second bellows joint.

[0008] The positioning component includes positioning connectors. Positioning connectors are provided on both the front and rear side walls of the first corrugated pipe joint, and positioning shafts are provided on both the front and rear side walls of the second corrugated pipe joint. The two positioning shafts are respectively inserted into the interiors of the two positioning connectors.

[0009] The protective assembly includes fixed ring plates. Fixed ring plates are provided on the exterior of both the first and second corrugated pipe joints. Annular protective frames that fit together are provided on the exterior of both the first and second corrugated pipe joints. Two annular protective frames are located between the two fixed ring plates. U-shaped seats are provided at the top and bottom of both fixed ring plates. Hooks are provided between the front and rear sides of the inner wall of the U-shaped seats. Four compression springs, evenly distributed in a ring, are provided between the opposite sides of the two fixed ring plates and the opposite sides of the two annular protective frames. Hook rings are provided at the top and bottom of both annular protective frames. Connecting blocks are provided at the top and bottom of both annular protective frames. A connecting bolt extending to the right side of the right connecting block is provided on the left side wall of the left connecting block. Two connecting nuts, symmetrically distributed on the left and right sides, are provided on the exterior of each connecting bolt.

[0010] Preferably, the right side wall of both positioning connectors is provided with a snap-fit ​​groove that is adapted to the positioning shaft.

[0011] Preferably, the spring constant is 50-80 N / mm, and the spring material is stainless steel and has been shot peened.

[0012] Preferably, a first anti-loosening washer is provided between the mounting bolt and the mounting nut, and the bolt thread surface is coated with molybdenum disulfide coating.

[0013] Preferably, a corrugated buffer pad is fixedly connected to the inner wall of the annular protective frame, and the buffer pad is made of nitrile rubber.

[0014] Preferably, the threaded portion of the connecting bolt is coated with a molybdenum disulfide anti-stick coating, and a second anti-loosening washer is provided between the connecting bolt and the connecting nut.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a flanged bellows joint, which has the following characteristics:

[0017] Beneficial effects:

[0018] 1. This flange-type bellows joint, through the setting of positioning components, with the cooperation of positioning plug and positioning shaft, only requires inserting the positioning shaft into the corresponding positioning plug during installation to complete the automatic calibration of the joint axis, avoiding the problem of uneven load on the sealing surface caused by misalignment. This structure is especially suitable for installation at high altitudes or in confined spaces, reducing the tedious operation of manual alignment, reducing installation difficulty and time consumption, and improving the practicality of the structure.

[0019] 2. This flange-type bellows joint, through the installation of protective components, uses compression springs on both sides to push two annular protective frames together, and then uses connecting bolts and nuts to fix the two annular protective frames, thus forming a fully enclosed shielding structure that effectively blocks external environmental factors such as rainwater, dust, and corrosive gases. The nitrile rubber corrugated buffer pad on the inner wall of the annular protective frame is tightly attached to the surface of the bellows, which can shield the joint from damage caused by external mechanical collisions. The hooks and hook rings can be used to push the two annular protective frames to the sides and fix them when disassembling the joint, making it convenient for workers to disassemble the joint and further improving the practicality of the structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This utility model Figure 1 Enlarged diagram of point A in the middle.

[0022] In the diagram: 1. First corrugated pipe joint; 2. Second corrugated pipe joint; 3. Mounting bolt; 4. Mounting nut; 5. Positioning assembly; 51. Positioning plug-in seat; 52. Positioning shaft; 6. Protective assembly; 61. Fixing ring plate; 62. Annular protective frame; 63. U-shaped seat; 64. Hook; 65. Compression spring; 66. Hook ring; 67. Connecting block; 68. Connecting bolt; 69. Connecting nut. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-2A flanged bellows joint includes a first bellows joint 1 and a second bellows joint 2. An annular sealing rubber ring is fixedly connected to the right side wall of the first bellows joint 1, with one end extending into the interior of the second bellows joint 2. A mounting bolt 3, with one end extending to the right side of the second bellows joint 2, is threadedly connected to the left side wall of the first bellows joint 1. Four mounting bolts 3 are arranged in a ring at equal intervals. Two mounting nuts 4, symmetrically distributed on the left and right sides, are threaded onto the external threads of each mounting bolt 3. A first anti-separation device is provided between the mounting bolts 3 and the mounting nuts 4. Loose washers and the bolt thread surface is coated with molybdenum disulfide coating. The front and rear side walls of the first corrugated pipe joint 1 are fixedly connected with positioning components 5, which are respectively fixedly connected to the front and rear side walls of the second corrugated pipe joint 2. The positioning components 5 include positioning plug seats 51. The front and rear side walls of the first corrugated pipe joint 1 are fixedly connected with positioning plug seats 51, and the front and rear side walls of the second corrugated pipe joint 2 are fixedly connected with positioning shafts 52. The two positioning shafts 52 are respectively inserted into the interior of the two positioning plug seats 51. The right side wall of the positioning plug seats 51 is provided with a snap-fit ​​groove that is compatible with the positioning shafts 52.

[0025] The first corrugated pipe joint 1 is externally fixedly connected to a protective component 6, which is also externally fixedly connected to the second corrugated pipe joint 2. The protective component 6 includes a fixing ring plate 61. Both the first corrugated pipe joint 1 and the second corrugated pipe joint 2 are externally fixedly connected to the fixing ring plate 61. Both the first corrugated pipe joint 1 and the second corrugated pipe joint 2 are externally fitted with mutually fitting annular protective frames 62. A corrugated buffer pad made of nitrile rubber is fixedly connected to the inner wall of the annular protective frame 62. The two annular protective frames 62 are located between the two fixing ring plates 61. U-shaped seats 63 are fixedly connected to the top and bottom of the two fixing ring plates 61. Hooks 64 are rotatably connected between the front and rear sides of the inner wall of the U-shaped seats 63. The opposite sides of the two fixing ring plates 61 are connected to the two annular protective frames 62. Four compression springs 65, arranged in a ring and evenly spaced, are fixedly connected between the opposing sides. The spring constant of the compression springs 65 is 50-80 N / mm, and the spring material is stainless steel and has been shot-peened. Hook rings 66 are fixedly connected to the top and bottom of the two ring protective frames 62. Connecting blocks 67 are fixedly connected to the top and bottom of the two ring protective frames 62. A connecting bolt 68 extending to the right side of the right connecting block 67 is threaded onto the left side wall of the left connecting block 67. Two connecting nuts 69, arranged symmetrically on the left and right sides, are threaded onto the external threads of each connecting bolt 68. The threaded part of the connecting bolt 68 is coated with a molybdenum disulfide anti-stick coating. A second anti-loosening washer is provided between the connecting bolt 68 and the connecting nut 69.

[0026] It is worth noting that the standard parts used in this application can all be purchased from the market, and the specific connection methods of each part are all connected by conventional means such as bolts, rivets, and welding that are mature in the prior art. Furthermore, the machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art. The contents not described in detail in the description belong to the prior art known to those skilled in the art, and will not be described in detail here.

[0027] In summary, this flange-type bellows joint, through the setting of positioning component 5, and the cooperation of positioning socket 51 and positioning shaft 52, allows for automatic alignment of the joint axis during installation by simply inserting the positioning shaft 52 into the corresponding positioning socket 51. This avoids the problem of uneven sealing surface load caused by misalignment. This structure is particularly suitable for installation at heights or in confined spaces, reducing the tedious manual alignment operation, lowering installation difficulty and time consumption, and improving the practicality of the structure. Through the setting of protective component 6, the compression springs 65 on both sides push the two annular protective frames 62 to fit together, and then the two annular protective frames 62 are fixed by the cooperation of connecting bolts 68 and connecting nuts 69, thus forming a fully enclosed shielding structure that effectively blocks external environmental factors such as rainwater, dust, and corrosive gases. The nitrile rubber corrugated buffer pad on the inner wall of the annular protective frame 62 fits tightly against the surface of the bellows, which can shield the joint from damage caused by external mechanical impact. The hooks 64 and hook rings 66 are designed so that when disassembling the joint, the two annular protective frames 62 can be pushed to both sides and fixed by the hooks 64 and hook rings 66, which facilitates the disassembly of the joint by the staff and further improves the practicality of the structure. It solves the problem that the traditional bellows joint does not have an external protective structure, and its main body is exposed to the outside, which is easy to be corroded by external environmental factors, which can lead to corrosion of the joint surface or installation structure, further causing damage to the joint and resulting in loosening of the bellows connection. Secondly, the flange joint requires manual location of the mounting holes and alignment during installation, which is tedious.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flanged bellows joint, comprising a first bellows joint (1) and a second bellows joint (2), characterized in that: The right side wall of the first corrugated pipe joint (1) is provided with an annular sealing rubber ring extending into the interior of its second corrugated pipe joint (2). The left side wall of the first corrugated pipe joint (1) is provided with a mounting bolt (3) extending into the right side of the second corrugated pipe joint (2). The number of mounting bolts (3) is four and they are distributed in a ring at equal intervals. Each mounting bolt (3) is provided with two mounting nuts (4) that are symmetrically distributed on the left and right sides. The front and rear side walls of the first corrugated pipe joint (1) are provided with positioning components (5) that are fixedly connected to the front and rear side walls of the second corrugated pipe joint (2) respectively. The exterior of the first corrugated pipe joint (1) is provided with a protective component (6) that is fixedly connected to the exterior of the second corrugated pipe joint (2). The positioning component (5) includes a positioning plug-in seat (51). The front and rear side walls of the first corrugated pipe joint (1) are provided with positioning plug-in seats (51), and the front and rear side walls of the second corrugated pipe joint (2) are provided with positioning shafts (52). The two positioning shafts (52) are respectively inserted into the interior of the two positioning plug-in seats (51). The protective component (6) includes a fixing ring plate (61). The first corrugated pipe joint (1) and the second corrugated pipe joint (2) are both provided with fixing ring plates (61). The first corrugated pipe joint (1) and the second corrugated pipe joint (2) are both provided with mutually fitting annular protective frames (62). The two annular protective frames (62) are located between the two fixing ring plates (61). U-shaped seats (63) are provided at the top and bottom of the two fixing ring plates (61). Hooks (64) are provided between the front and rear sides of the inner wall of the U-shaped seats (63). The two fixing ring plates (61)... 1) There are four compression springs (65) arranged in a ring and equidistantly between the opposite sides of the two annular protective frames (62). The top and bottom of the two annular protective frames (62) are provided with hook rings (66). The top and bottom of the two annular protective frames (62) are provided with connecting blocks (67). The left side wall of the left connecting block (67) is provided with a connecting bolt (68) extending to the right side of the right connecting block (67). The outside of each connecting bolt (68) is provided with two connecting nuts (69) arranged symmetrically on the left and right sides.

2. The flanged bellows joint according to claim 1, characterized in that: Both of the positioning connectors (51) have a snap-fit ​​groove on the right side wall that is compatible with the positioning shaft (52).

3. A flanged bellows joint according to claim 1, characterized in that: The spring constant of the compression spring (65) is 50-80 N / mm, and the spring material is stainless steel and has been shot peened.

4. A flanged bellows joint according to claim 1, characterized in that: A first anti-loosening washer is provided between the mounting bolt (3) and the mounting nut (4), and the bolt thread surface is coated with molybdenum disulfide coating.

5. A flanged bellows joint according to claim 1, characterized in that: The inner wall of the annular protective frame (62) is fixedly connected with a wave-shaped buffer pad, which is made of nitrile rubber.

6. A flanged bellows joint according to claim 1, characterized in that: The threaded portion of the connecting bolt (68) is coated with a molybdenum disulfide anti-stick coating, and a second anti-loosening washer is provided between the connecting bolt (68) and the connecting nut (69).

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