A flange sealing structure

Abstract

The utility model belongs to the field of flange technology, and is particularly a flange sealing structure, including a first flange and a second flange, a sealing gasket is arranged between the first flange and the second flange, a bolt is arranged on the first flange, a nut is arranged on the bolt, a threaded hole is opened on the nut, a limiting mechanism is arranged on the bolt, an elastic mechanism is arranged between the inner wall and the outer wall of the sealing gasket, one end of the fixing rope passes through the bolt, the bottom of the empty groove, and the first spring in sequence and is fixedly installed at the insertion end of the limiting rod, and the handle is fixedly installed at the other end of the fixing rope, there are several groups of bolts and the structures of the several groups of bolts are the same, and the specific material of the mounting block is soft silicone. The utility model sets an elastic mechanism and a limiting mechanism, and this structure can further improve the durability of the sealing effect of the sealing gasket of the flange sealing structure, and can further improve the bolt installation stability of the flange sealing structure.

Description

Technical Field

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

[0002] Flange is a part that connects pipes to each other and is used to connect pipe ends. Flange connection refers to a detachable connection of the flange itself, a sealing gasket (the sealing gasket is located between the two flanges to fill the gap between the flanges and ensure the seal) and bolts (the bolts are used to fix the two flanges together and apply enough pressure to ensure the sealing performance of the sealing gasket) as a combined sealing structure.

[0003] The prior art has the following problems:

[0004] 1. The sealing gasket of the flange sealing structure in the prior art will gradually age and its elasticity will gradually decrease as the service time increases. Since the sealing gasket usually relies on its own elastic extrusion to deform and seal the flange, the sealing gasket itself often cannot maintain the original sealing effect on the flange after its own elasticity gradually decreases. The sealing effect durability of the sealing gasket of the flange sealing structure can be further improved.

[0005] 2. As the bolts of the flange sealing structure of the prior art are used for a longer time, the threaded connection between the bolts and the matching nuts is prone to loosening, which reduces the pressure applied by the bolts to the sealing gasket, affecting the sealing performance of the sealing gasket. The bolt installation stability of the flange sealing structure can be further improved. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a flange sealing structure, which solves the problem that the sealing gasket of the existing flange sealing structure will gradually age and its own elasticity will gradually decrease with the increase of service time. Since the sealing gasket usually relies on its own elastic extrusion to deform and seal the flange, the sealing gasket itself cannot maintain the original sealing effect on the flange after its elasticity gradually decreases. The sealing effect durability of the sealing gasket of the flange sealing structure can be further improved, and the threaded connection between the bolts and the matching nuts of the flange sealing structure is prone to loosening as the service time increases, thereby reducing the pressure applied by the bolts to the sealing gasket, affecting the sealing performance of the sealing gasket. The bolt installation stability of the flange sealing structure can be further improved.

[0007] To achieve the above object, the utility model provides the following technical solutions: a flange sealing structure, comprising a first flange and a second flange, a sealing gasket is arranged between the first flange and the second flange, a bolt is arranged on the first flange, a nut is arranged on the bolt, a threaded hole is opened on the nut, a limiting mechanism is arranged on the bolt, and an elastic mechanism is arranged between the inner wall and the outer wall of the sealing gasket;

[0008] The limiting mechanism is specifically composed of an empty slot, a first spring, a limiting rod, a clamping slot, a limiting block, a limiting slot, a fixing rope and a handle. An empty slot is provided on one side of the bolt, a first spring is provided in the empty slot, a limiting rod is provided on one side of the bolt, a clamping slot is provided on one side of the inner wall of the threaded hole, a limiting block is provided on one side of the limiting rod, limiting slots are provided on both sides of the inner wall of the empty slot, a fixing rope is provided at one end of the bolt, and a handle is provided at one end of the fixing rope;

[0009] The elastic mechanism is specifically composed of a cavity, a second spring and a mounting block. A cavity is opened between the inner wall and the outer wall of the sealing gasket. The second spring is arranged in the cavity, and the mounting block is arranged on the second spring.

[0010] As a preferred technical solution of the utility model, one end of the bolt passes through the first flange and the second flange in sequence, the nut is threadedly connected to the bolt, and one end of the first spring is fixedly installed at the bottom of the empty slot.

[0011] As a preferred technical solution of the utility model, the empty slot is adapted to the limiting rod, one end of the limiting rod is extended into the empty slot and fixedly installed on the other end of the first spring, the clamping slot is adapted to the protruding end of the limiting rod, and the protruding end of the limiting rod is clamped in the clamping slot.

[0012] As a preferred technical solution of the utility model, limiting blocks are fixedly installed on both sides of the extending end of the limiting rod, the two groups of limiting grooves are respectively adapted to the two groups of limiting blocks, and the two groups of limiting blocks are respectively slidably installed in the two groups of limiting grooves.

[0013] As a preferred technical solution of the utility model, one end of the fixing rope passes through the bolt, the bottom of the empty groove, and the first spring in sequence and is fixedly installed on the extending end of the limiting rod, and the handle is fixedly installed on the other end of the fixing rope. There are several groups of bolts and the structures of several groups of bolts are the same.

[0014] As a preferred technical solution of the utility model, mounting blocks are fixedly installed at both ends of the second spring, and two groups of the mounting blocks are respectively fixedly installed on both sides of the inner wall of the cavity.

[0015] As a preferred technical solution of the present utility model, the specific material of the mounting block is soft silica gel, and a total of several groups of second springs are arranged in the cavity, and the mounting structures of the several groups of second springs are the same.

[0016] Compared with the prior art, the utility model provides a flange sealing structure, which has the following beneficial effects:

[0017] 1. The flange sealing structure is provided with an elastic mechanism. Since the elastic mechanism has good elasticity as a whole, the elastic mechanism can make the sealing gasket as a whole still maintain its original elastic effect after the elasticity of the sealing gasket itself decreases, and the sealing gasket as a whole can still maintain its original sealing effect. This structure can further improve the durability of the sealing effect of the sealing gasket of the flange sealing structure;

[0018] 2. This flange sealing structure is provided with a limiting mechanism. When the threaded connection between the bolt and the nut becomes loose, the limiting rod can limit the position between the bolt and the nut. The nut will not rotate at will, and the pressure applied by the bolt to the sealing gasket will not decrease. This structure can further improve the bolt installation stability of the flange sealing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall straight view of the utility model and the cross-sectional structure of the sealing gasket, bolts and nuts;

[0020] Figure 2 This is a schematic diagram of the specific structure of the limiting mechanism of the utility model;

[0021] Figure 3 This is a schematic diagram of the specific structure of the elastic mechanism of the utility model;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the bolt of the utility model.

[0023] In the figure: 1. first flange; 2. second flange; 3. sealing gasket; 4. bolt; 5. nut; 6. threaded hole; 7. limiting mechanism; 701. empty slot; 702. first spring; 703. limiting rod; 704. slot; 705. limiting block; 706. limiting slot; 707. fixing rope; 708. handle; 8. elastic mechanism; 801. cavity; 802. second spring; 803. mounting block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 In this embodiment: a flange sealing structure comprises a first flange 1 and a second flange 2, a sealing gasket 3 is arranged between the first flange 1 and the second flange 2, the sealing gasket 3 can seal the connection between the first flange 1 and the second flange 2, a bolt 4 is arranged on the first flange 1, a nut 5 is arranged on the bolt 4, the nut 5 can facilitate the fixing of the bolt 4, a threaded hole 6 is opened on the nut 5, a limiting mechanism 7 is arranged on the bolt 4, and an elastic mechanism 8 is arranged between the inner wall and the outer wall of the sealing gasket 3;

[0026] The limiting mechanism 7 is specifically composed of an empty slot 701, a first spring 702, a limiting rod 703, a clamping slot 704, a limiting block 705, a limiting slot 706, a fixing rope 707 and a handle 708. An empty slot 701 is provided on one side of the bolt 4, and the empty slot 701 can facilitate the movement of the limiting rod 703. A first spring 702 is provided in the empty slot 701. A limiting rod 703 is provided on one side of the bolt 4. A clamping slot 704 is provided on one side of the inner wall of the threaded hole 6. A limiting block 705 is provided on one side of the limiting rod 703. Limiting slots 706 are provided on both sides of the inner wall of the empty slot 701. A fixing rope 707 is provided at one end of the bolt 4. The limiting rod 703 can be driven to move by pulling the fixing rope 707. A handle 708 is provided at one end of the fixing rope 707.

[0027] The elastic mechanism 8 is specifically composed of a cavity 801, a second spring 802 and a mounting block 803. A cavity 801 is opened between the inner wall and the outer wall of the sealing gasket 3. A second spring 802 is arranged in the cavity 801. The second spring 802 itself has good elasticity. A mounting block 803 is arranged on the second spring 802.

[0028] The first and second flanges 701 and 702 are connected in a fixed manner to the locking nut 5. The first and second flanges 701 are connected in a fixed manner to the locking nut 5. The first and second flanges 701 are connected in a fixed manner to the locking nut 5. The first and second flanges 701 are connected in a fixed manner to the locking nut 5. The first and second flanges 701 are connected in a fixed manner to the locking nut 5. The first and second flanges 701 are connected in a fixed manner to the locking nut 5. The first and second flanges 701 are connected in a fixed manner to the locking nut 5. The first and second flanges 701 are connected in a fixed manner to the locking nut 5. The first and second flanges 701 are connected in a fixed manner to the locking nut 5. The first and second flanges 701 are connected in a fixed manner to the locking nut 5. The first and second flanges 701 are connected in a fixed manner to the locking nut 5. The first and second flanges 701 are connected in a fixed manner to the locking nut 5. 6, the limit block 705 combined with the limit groove 706 can prevent the limit rod 703 from leaving the empty groove 701; one end of the fixing rope 707 passes through the bolt 4, the bottom of the empty groove 701, and the first spring 702 in sequence, and is fixedly installed at the extending end of the limit rod 703, and the handle 708 is fixedly installed at the other end of the fixing rope 707. There are several groups of bolts 4 and the structures of several groups of bolts 4 are the same. The handle 708 can facilitate the holding of the fixing rope 707; both ends of the second spring 802 are fixedly installed with mounting blocks 803, and the two groups of mounting blocks 803 are respectively fixedly installed on both sides of the inner wall of the cavity 801, and the mounting blocks 803 can prevent the second spring 802 from causing damage to the inner wall of the cavity 801; the specific material of the mounting block 803 is soft silicone, and there are several groups of second springs 802 in the cavity 801, and the mounting structures of several groups of second springs 802 are the same, and the cavity 801 can facilitate the installation of the mounting block 803 and the second spring 802.

[0029] The working principle and use process of the utility model are as follows: the operator first checks whether the relevant components are installed in the correct position. When the nut 5 needs to be installed, the nut 5 is threadedly connected to the bolt 4 near the protruding end of the limiting rod 703, and the handle 708 is pulled to make the limiting rod 703 as a whole located in the empty groove 701. During this process, the first spring 702 will be squeezed, and the nut 5 will be rotated at the same time to make the nut 5 close to the second flange 2. The handle 708 is loosened. Due to the rebound effect of the first spring 702, the limiting rod 703 will be clamped in the clamping groove 704. At this time, the installation of the nut 5 can be completed. When the nut 5 needs to be disassembled, the above operation is performed in reverse. Since the second spring 802 itself has good elasticity, the installation block 803 can prevent To prevent the second spring 802 from causing damage to the inner wall of the cavity 801, the elastic mechanism 8 has good elasticity as a whole. The elastic mechanism 8 can make the sealing gasket 3 as a whole still maintain the original elastic effect after the elasticity of the sealing gasket 3 itself decreases, and can make the sealing gasket 3 as a whole still maintain the original sealing effect. When the threaded connection between the bolt 4 and the nut 5 becomes loose, since the corresponding limiting rod 703 is clamped in the clamping groove 704, the limiting rod 703 can limit the position between the bolt 4 and the nut 5, the nut 5 will not rotate at will, and the pressure applied by the bolt 4 to the sealing gasket 3 will not decrease. This structure can further improve the durability of the sealing effect of the sealing gasket 3 of the flange sealing structure, and can further improve the installation stability of the bolt 4 of the flange sealing structure.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A flange sealing structure, comprising a first flange (1) and a second flange (2), a sealing gasket (3) being arranged between the first flange (1) and the second flange (2), a bolt (4) being arranged on the first flange (1), a nut (5) being arranged on the bolt (4), and a threaded hole (6) being provided on the nut (5), wherein: A limiting mechanism (7) is provided on the bolt (4), and an elastic mechanism (8) is provided between the inner wall and the outer wall of the sealing gasket (3); The limiting mechanism (7) is specifically composed of an empty slot (701), a first spring (702), a limiting rod (703), a clamping slot (704), a limiting block (705), a limiting slot (706), a fixing rope (707) and a handle (708); an empty slot (701) is provided on one side of the bolt (4); a first spring (702) is arranged in the empty slot (701); a limiting rod (703) is provided on one side of the bolt (4); a clamping slot (704) is provided on one side of the inner wall of the threaded hole (6); a limiting block (705) is provided on one side of the limiting rod (703); limiting slots (706) are provided on both sides of the inner wall of the empty slot (701); a fixing rope (707) is provided on one end of the bolt (4); and a handle (708) is provided on one end of the fixing rope (707); The elastic mechanism (8) is specifically composed of a cavity (801), a second spring (802) and a mounting block (803); a cavity (801) is provided between the inner wall and the outer wall of the sealing gasket (3); a second spring (802) is provided in the cavity (801); and a mounting block (803) is provided on the second spring (802).

2. A flange sealing structure according to claim 1, characterized in that: One end of the bolt (4) passes through the first flange (1) and the second flange (2) in sequence, the nut (5) is threadedly connected to the bolt (4), and one end of the first spring (702) is fixedly installed at the bottom of the empty groove (701).

3. A flange sealing structure according to claim 1, characterized in that: The empty slot (701) is matched with the limiting rod (703), one end of the limiting rod (703) extends into the empty slot (701) and is fixedly mounted on the other end of the first spring (702), the clamping slot (704) is matched with the protruding end of the limiting rod (703), and the protruding end of the limiting rod (703) is clamped in the clamping slot (704).

4. A flange sealing structure according to claim 1, characterized in that: Limiting blocks (705) are fixedly installed on both sides of the extending end of the limiting rod (703), the two groups of limiting grooves (706) are respectively matched with the two groups of limiting blocks (705), and the two groups of limiting blocks (705) are respectively slidably installed in the two groups of limiting grooves (706).

5. The flange sealing structure according to claim 1, characterized in that: One end of the fixing rope (707) passes through the bolt (4), the bottom of the empty slot (701), and the first spring (702) in sequence and is then fixedly mounted on the insertion end of the limiting rod (703). The handle (708) is fixedly mounted on the other end of the fixing rope (707). There are a total of several groups of bolts (4), and the structures of the several groups of bolts (4) are the same.

6. The flange sealing structure according to claim 1, characterized in that: Both ends of the second spring (802) are fixedly mounted with mounting blocks (803), and two groups of the mounting blocks (803) are respectively fixedly mounted on two sides of the inner wall of the cavity (801).

7. The flange sealing structure according to claim 1, characterized in that: The specific material of the mounting block (803) is soft silica gel. A total of several groups of second springs (802) are arranged in the cavity (801), and the mounting structures of the several groups of second springs (802) are the same.

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