Uniform force distribution gasket of bolt group for flange connection

Abstract

The utility model relates to the field of flange gaskets, and discloses a uniform force distribution gasket of a bolt group for flange connection, which comprises a pipeline I, a pipeline II is inserted on the right surface of the pipeline I, a bolt is inserted at the right end of the pipeline II, a nut is in threaded connection with the outer wall of the bolt, a rear gasket is sleeved on the outer wall of the pipeline I, and the rear gasket is in threaded connection with the pipeline II. A front gasket is hinged to the front surface of the rear gasket, the rear gasket and the front gasket are identical assemblies arranged in a mirror image mode, an expansion assembly is arranged on the inner wall of the front gasket, and the rear gasket and the front gasket are fixed through a fixing assembly. The expansion assembly comprises an expansion sleeve. According to the high-pressure inflation connecting head, the expansion assembly is arranged, when pipeline connection is conducted, the front gasket and the rear gasket can be connected to the outer wall of the first pipeline in a sleeved mode, then the multiple sets of bolts sequentially penetrate through the two sets of pipelines, the nuts are installed on the outer walls of the bolts, and then the high-pressure inflation connecting head can be used for inflating the interior of the connecting pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to flange gasket field especially uses bolt group's equal force distribution gasket for flange connection. BACKGROUND

[0002] Flange is a kind of common connecting device, generally used in pairs, can be used to seal the pipe connection, flange needs to install multiple bolts on its outer wall when using, so it can ensure that the two flanges keep close contact at one end, and can prevent water and gas leakage.

[0003] In the prior art, in order to ensure that the connection is closely fitted, the bolts need to be fixed in a specific order, and during fixing, the bolts cannot be screwed to the bottom at one time, and need to be screwed multiple times, so as to ensure that the two flanges are closely fitted, the overall device is inconvenient to install, and manual screwing cannot ensure that multiple bolts are subjected to the same force, so as to affect the normal fitting of the flanges, therefore, a bolt group equal force distribution gasket for flange connection is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a bolt group equal force distribution gasket for flange connection, which aims to improve the problem of "manual screwing of bolts cannot ensure that multiple bolts are subjected to uniform force, which affects the normal fitting of the two flanges" in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a bolt group equal force distribution gasket for flange connection, comprising a pipeline one, the right surface of the pipeline one is inserted with a pipeline two, the right end of the pipeline two is inserted with a bolt, the outer wall of the bolt is threadedly connected with a nut, the outer wall of the pipeline one is sleeved with a rear gasket, the front surface of the rear gasket is hinged with a front gasket, the rear gasket and the front gasket are mirror image arranged same components, the inner wall of the front gasket is provided with an expansion assembly, the rear gasket and the front gasket are fixed to each other by a fixing assembly.

[0006] The expansion assembly comprises an expansion sleeve, the expansion sleeve is installed on the inner wall of the front gasket, the left end of the expansion sleeve is fixedly connected with a support seat, the expansion sleeve is provided with multiple groups, multiple expansion sleeves are rotationally arranged on the inner wall of the rear gasket and the front gasket with the center line of the pipeline one as the rotation axis, multiple expansion sleeves are communicated with each other through a connecting pipe, one end of the connecting pipe is provided with a connector, the other end of the connecting pipe is provided with an exhaust head.

[0007] Further description of the above technical scheme:

[0008] The expansion assembly further comprises a sliding rod, the sliding rod is fixedly connected to the outer wall of the support seat.

[0009] As a further description of the above technical solution:

[0010] The left surface of the front gasket is provided with a sliding groove, and the sliding rod is inserted into the inner wall of the sliding groove.

[0011] As a further description of the above technical solution:

[0012] The support base has a slot at the end facing the nut.

[0013] As a further description of the above technical solution:

[0014] The fixing component includes two sets of columns, which are respectively disposed on the left surface of the rear pad and the front pad.

[0015] As a further description of the above technical solution:

[0016] One set of the columns has a buckle rotatably connected to the outer wall, and the left surface of the buckle is provided with a groove that matches the column.

[0017] As a further description of the above technical solution:

[0018] The inner wall of the buckle is slidably connected to a stop block, which is elastically connected to the inner wall of the buckle by a fixed spring. The end of the stop block facing the column is set in an arc shape.

[0019] As a further description of the above technical solution:

[0020] A lever is fixedly connected to the lower surface of the stop block, and the lever is slidably connected to the lower end of the buckle.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by setting an expansion component, when connecting pipes, the front gasket and the rear gasket can be first fitted onto the outer wall of the pipe. Then, multiple sets of bolts are passed through the two sets of pipes in sequence, and nuts are installed on the outer wall of the bolts. Then, air can be injected into the connecting pipe using a high-pressure air-filled connecting head. This will cause the expansion sleeve to expand. The expansion sleeve will push the nut to pull the bolt and cause the two sets of pipes to fit together. Since multiple sets of expansion sleeves are connected through the same set of connecting pipes, the multiple sets of expansion sleeves will expand evenly and ensure that the force on multiple force points is even. This can achieve multi-point synchronous fixing and ensure that the flange fits evenly.

[0023] 2. In this utility model, by adopting a hinged design, the entire device can be directly fitted onto the outer wall of one of the pipes during use. After the fitting is completed, the front and rear gaskets can be connected using the buckle and the column, without having to remove the flange for installation. The entire device is more convenient to install. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0025] Figure 2 This is a three-dimensional structural disassembly diagram of the expansion component in this utility model;

[0026] Figure 3 This is a three-dimensional cross-sectional diagram of the expansion component in this utility model.

[0027] Figure 4 This is a three-dimensional cross-sectional view of the fixing component in this utility model;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the rear gasket and the front gasket in the open state of this utility model.

[0029] Legend:

[0030] 1. Pipe 1; 2. Pipe 2; 3. Bolt; 4. Nut; 5. Rear gasket; 6. Front gasket; 7. Expansion assembly; 71. Expansion sleeve; 72. Support base; 73. Connecting pipe; 74. Connector; 75. Exhaust head; 76. Slot; 77. Slide rod; 78. Slide groove; 8. Fixing assembly; 81. Column; 82. Buckle; 83. Slot; 84. Stop; 85. Fixing spring; 86. Pulling block. Detailed Implementation

[0031] 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.

[0032] Reference Figure 1 - Figure 3This utility model provides an embodiment of a force-equalizing gasket for a flange connection bolt assembly, comprising a pipe 1 for transporting objects, a pipe 2 inserted into the right surface of the pipe 1, a bolt 3 for fixing the pipe 1 and the pipe 2 inserted into the right end of the pipe 2, a nut 4 for sealing the left end opening of the bolt 3 being threaded onto the outer wall of the bolt 3, a rear gasket 5 fitted onto the outer wall of the pipe 1, a front gasket 6 hinged to the front surface of the rear gasket 5, and the rear gasket 5 and the front gasket 6 can be fitted onto the outer wall of the pipe 1 by rotating them. The rear gasket 5 and the front gasket 6 are identical components arranged in a mirror image. An expansion component 7 for pushing the nut 4 is provided on the inner wall of the front gasket 6. The rear gasket 5 and the front gasket 6 are fixed to each other by a fixing component 8.

[0033] Reference Figure 1 - Figure 3 The expansion assembly 7 includes an expansion sleeve 71 for supporting the support base 72. The expansion sleeve 71 is installed on the inner wall of the front gasket 6. The expansion sleeve 71 is foldable and expands after being inflated. The left end of the expansion sleeve 71 is fixedly connected to the support base 72 for supporting the nut 4. Multiple sets of expansion sleeves 71 are arranged in a rotating array on the inner wall of the rear gasket 5 and the front gasket 6 with the center line of the pipe 1 as the rotation axis. The positions of the expansion sleeves 71 correspond to the installation positions of the bolts 3. The multiple sets of expansion sleeves 71 are interconnected through the connecting pipe 73. High-pressure gas can be input into the expansion sleeve 71 through the connecting pipe 73, which can drive the expansion sleeve 71 to expand. One end of the connecting pipe 73 is equipped with a connector 74 for connecting to a high-pressure gas transmission device, and the other end of the connecting pipe 73 is equipped with an exhaust head 75 for discharging gas.

[0034] Reference Figure 1 - Figure 3 The expansion assembly 7 also includes a slide rod 77 for guiding the movement of the support base 72. The slide rod 77 is fixedly connected to the outer wall of the support base 72. When the support base 72 moves, it will drive the slide rod 77 to move synchronously. The left surface of the front gasket 6 is provided with a groove 78 for guiding the movement of the slide rod 77. The slide rod 77 is inserted into the inner wall of the groove 78. By using the groove 78 to guide the slide rod 77, the slide rod 77 can be guided to move left and right vertically. The end of the support base 72 facing the nut 4 is provided with a slot 76 for accommodating the nut 4.

[0035] Reference Figure 1 , Figure 4 and Figure 5The fixing component 8 includes two sets of uprights 81 supporting the fixing component 8. The two sets of uprights 81 are respectively located on the left surfaces of the rear gasket 5 and the front gasket 6. One set of uprights 81 has a buckle 82 rotatably connected to its outer wall for hooking the upright. The left surface of the buckle 82 has a groove 83 that matches the upright 81. By rotating the buckle 82, the buckle 82 can be moved to engage with the outer wall of the upright 81, thus connecting the two sets of uprights 81 together. The inner wall of the buckle 82 has a stop block 84 slidably connected to prevent the uprights 81 from moving. The inner wall of the stop block 84 and the buckle 82 is elastically connected by a fixing spring 85. The fixing spring 85 will support the stop block 84 outward at all times, thus preventing the column 81 from detaching from the inside of the slot 83. The end of the stop block 84 facing the column 81 is set as an arc shape. The arc shape design allows the stop block 84 to better fit the outer wall of the column 81 when in use. The lower surface of the stop block 84 is fixedly connected to a lever 86 for moving the stop block 84. The lever 86 passes through and slides on the lower end of the buckle 82. By moving the lever 86, the buckle 82 can be moved.

[0036] Working principle: First, open the rear gasket 5 and the front gasket 6 through the hinge and fit them onto the outer wall of pipe 1. Then, rotate the buckle 82 so that its slot 83 fits onto the column 81, connecting the rear gasket 5 and the front gasket 6. At this time, the stop block 84, under the action of the fixing spring 85, pushes against the column 81 outward to prevent the buckle 82 from detaching from the column 81, ensuring a stable connection between the rear gasket 5 and the front gasket 6. At this time, the expansion component 7 and the fixing component 8 on the inner wall of the rear gasket 5 and the front gasket 6 are in a ready-to-work state. Pass multiple sets of bolts 3 through pipe 1 and pipe 2 in sequence, and screw nuts 4 onto the outer wall of the bolts 3. However, the nuts 4 do not need to be tightened at this time; they are only used to initially fix the pipe connection.

[0037] Using a high-pressure air-filling device connected to connector 74, air is filled into connecting pipe 73. Since multiple sets of expansion sleeves 71 are interconnected through connecting pipe 73, high-pressure gas enters each expansion sleeve 71 evenly, causing them to expand synchronously. When the expansion sleeve 71 expands, it pushes the support seat 72 at the left end to move towards nut 4. The slide rod 77 on the support seat 72 slides in the slide groove 78, ensuring that the support seat 72 moves smoothly. The slot 76 on the support seat 72 accommodates nut 4. As the expansion sleeve 71 continues to expand, the support seat 72 pushes nut 4, and nut 4 pulls bolt 3, thereby causing pipe 1 and pipe 2 to fit tightly together. Since multiple sets of expansion sleeves 71 expand evenly, it ensures that each bolt 3 is subjected to uniform force, achieving uniform flange fit and improving the sealing effect.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A force-distributing gasket for a flange connection bolt assembly, comprising a first pipe (1), wherein a second pipe (2) is inserted into the right surface of the first pipe (1), characterized in that: A bolt (3) is inserted into the right end of the second pipe (2), and a nut (4) is threaded onto the outer wall of the bolt (3). A rear gasket (5) is fitted onto the outer wall of the first pipe (1), and a front gasket (6) is hinged to the front surface of the rear gasket (5). The rear gasket (5) and the front gasket (6) are mirror images of the same components. An expansion component (7) is provided on the inner wall of the front gasket (6). The rear gasket (5) and the front gasket (6) are fixed to each other by a fixing component (8). The expansion assembly (7) includes an expansion sleeve (71), which is installed on the inner wall of the front gasket (6). A support base (72) is fixedly connected to the left end of the expansion sleeve (71). Multiple sets of expansion sleeves (71) are arranged in a rotating array around the center line of the pipe (1) on the inner wall of the rear gasket (5) and the front gasket (6). The multiple sets of expansion sleeves (71) are interconnected through a connecting pipe (73). A connector (74) is installed at one end of the connecting pipe (73), and an exhaust head (75) is installed at the other end of the connecting pipe (73).

2. The force-distributing gasket for a flange connection bolt assembly according to claim 1, characterized in that: The expansion assembly (7) also includes a slide rod (77), which is fixedly connected to the outer wall of the support base (72).

3. The force-distributing gasket for a flange connection bolt assembly according to claim 2, characterized in that: The left surface of the front gasket (6) is provided with a groove (78), and the slide rod (77) is inserted into the inner wall of the groove (78).

4. The force-distributing gasket for a flange connection bolt assembly according to claim 1, characterized in that: The support base (72) has a slot (76) at the end facing the nut (4).

5. The force-distributing gasket for a flange connection bolt assembly according to claim 1, characterized in that: The fixing component (8) includes a column (81), and two sets of the column (81) are provided, which are respectively located on the left surface of the rear pad (5) and the front pad (6).

6. The force-distributing gasket for a flange connection bolt assembly according to claim 5, characterized in that: One of the columns (81) has a buckle (82) rotatably connected to the outer wall of the column (81), and the left surface of the buckle (82) is provided with a slot (83) that is adapted to the column (81).

7. A force-distributing gasket for a flange connection bolt assembly according to claim 6, characterized in that: The inner wall of the buckle (82) is slidably connected to a stop (84), and the stop (84) is elastically connected to the inner wall of the buckle (82) by a fixing spring (85). The end of the stop (84) facing the column (81) is set to be arc-shaped.

8. A force-distributing gasket for a flange connection bolt assembly according to claim 7, characterized in that: A lever (86) is fixedly connected to the lower surface of the stop (84), and the lever (86) is slidably connected to the lower end of the buckle (82).

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