Chemical pipeline flange with good sealing effect

Abstract

The utility model discloses a chemical pipeline flange with a good sealing effect, and relates to the technical field of flanges, the chemical pipeline flange comprises a first flange plate and an insertion cylinder, the left side surface of the first flange plate is provided with a containing cavity, the inner surface of the containing cavity is provided with a limiting groove, the left side surface of the first flange plate is further provided with a gasket groove, and a gasket is placed in the gasket groove; a second flange plate is fixed to the left side of the gasket, and the inserting cylinder is arranged on the right side of the second flange plate. According to the chemical pipeline flange with the good sealing effect, the inserting barrel is inserted into the containing cavity, so that when the sliding grooves coincide with the limiting grooves, the sliding pins can slide in the sliding grooves in the direction away from the transverse central axis of the inserting barrel by means of the elastic force of the elastic clamping pieces till the sliding pins are clamped with the limiting grooves to achieve the primary positioning effect; the coaxiality of the first flange plate and the second flange plate in the process of screwing the bolt into the bolt hole is guaranteed, the gasket is locked in the gasket groove, relative displacement and looseness are not prone to occurring, and the sealing performance of the connecting position is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of flanges, in particular to a chemical pipeline flange with good sealing effect. Background Art

[0002] Flange, also known as flange flange or flange. Flange is a part that connects pipes to each other and is used to connect pipe ends. It is also used as a flange on the inlet and outlet of equipment to connect two devices. Flange connection or flange joint refers to a detachable connection in which flange, gasket and bolts are connected to each other as a combined sealing structure. When transporting chemical raw materials, pipeline connections are used for transportation. When connecting pipelines, flanges are generally used for connection.

[0003] In the process of screwing the bolts into the bolt holes on the flange, the flanges are prone to loosening, causing the gaskets therebetween to move or twist and deform, thus affecting the sealing of the flanges.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a chemical pipeline flange with good sealing effect is proposed. Utility Model Content

[0005] The utility model aims to provide a chemical pipeline flange with good sealing effect to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a chemical pipeline flange with good sealing effect, comprising a flange plate and a plug-in sleeve, the left side surface of the flange plate is provided with a accommodating cavity, and the inner surface of the accommodating cavity is provided with a limiting groove, the left side surface of the flange plate is also provided with a gasket groove, and a gasket is placed in the gasket groove, a flange plate 2 is fixed on the left side of the gasket, the plug-in sleeve is arranged on the right side of the flange plate 2, and a sliding groove is provided on the top and bottom of the plug-in sleeve, a sliding pin is passed through the sliding groove, and a C-shaped frame is sleeved on the outside of the sliding pin, an elastic clip is fixed to the left end of the C-shaped frame, and a fixing pin is passed through the middle of the elastic clip.

[0007] Furthermore, bolt holes are provided at the edges of the surfaces of flange 1 and flange 2, and the outer diameters of flange 1 and flange 2 are consistent.

[0008] Furthermore, the number of the accommodating chambers and the plug-in tubes is the same, and the plug-in tubes and the fixing pins are fixedly connected.

[0009] Furthermore, the inner diameter of the accommodating cavity matches the outer diameter of the plug-in tube, and the number ratio of the elastic clips and the sliding pins is 1:2.

[0010] Furthermore, the bottom of the flange is connected to a movable seat, and the surface of the movable seat is connected to a connecting rod via a rotating shaft.

[0011] Furthermore, the other end of the connecting rod is connected to a slider via a rotating shaft, and a damping spring is arranged between the sliders.

[0012] Furthermore, a slide rod is passed through the middle of the damping spring, and bases are fixed at both ends of the slide rod.

[0013] Furthermore, the slider and the slide rod are slidably connected, and two connecting rods and two sliders are provided.

[0014] The utility model provides a chemical pipeline flange with good sealing effect, which has the following beneficial effects:

[0015] 1. The utility model inserts the plug-in tube into the accommodating cavity, so that when the slide groove and the limit groove coincide with each other, the sliding pin can slide along the slide groove in a direction away from the transverse center axis of the plug-in tube with the help of the elastic force of the elastic clip until it engages with the limit groove to achieve a preliminary positioning effect, thereby ensuring the coaxiality of the flange plate 1 and the flange plate 2 during the process of screwing the bolt into the bolt hole, and locking the gasket in the gasket groove, making it difficult to cause relative displacement and loosening, thereby ensuring the sealing of the connection.

[0016] 2. When an external force impacts the top of flange one, flange one drives the moving seat to move downward, thereby changing the angle of the connecting rod, causing the slider to slide on the slide rod, and providing a buffer through the damping spring between the sliders to prevent the flange one, flange two and the pipeline connection from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a chemical pipeline flange with good sealing effect according to the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a flange plate of a chemical pipeline flange with good sealing effect according to the utility model from one side;

[0019] Figure 3 It is a cross-sectional structural schematic diagram of flange plate 1 and flange plate 2 of a chemical pipeline flange with good sealing effect according to the utility model;

[0020] Figure 4 The utility model is a chemical pipeline flange with good sealing effect Figure 3 Enlarged structural diagram at A in the middle.

[0021] In the figure: 1. Flange one; 2. Bolt hole; 3. Accommodating cavity; 4. Limiting groove; 5. Gasket groove; 6. Flange two; 7. Gasket; 8. Connecting tube; 9. Slide groove; 10. Fixing pin; 11. Elastic clip; 12. C-shaped frame; 13. Sliding pin; 14. Moving seat; 15. Connecting rod; 16. Sliding block; 17. Damping spring; 18. Sliding rod; 19. Base. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0023] like Figures 2 to 4 As shown, a chemical pipeline flange with good sealing effect includes a flange plate 1 and a plug-in sleeve 8. The left surface of the flange plate 1 is provided with a receiving cavity 3, and the inner surface of the receiving cavity 3 is provided with a limiting groove 4. The left surface of the flange plate 1 is also provided with a gasket groove 5, and a gasket 7 is placed in the gasket groove 5. A flange plate 2 6 is fixed to the left side of the gasket 7. Bolt holes 2 are provided at the edges of the surfaces of the flange plate 1 and the flange plate 2 6, and the outer diameters of the flange plate 1 and the flange plate 2 6 are consistent. The plug-in sleeve 8 is arranged on the flange plate On the right side of disk 2 6, a slide groove 9 is provided at the top and bottom of the plug-in tube 8, a sliding pin 13 is passed through the slide groove 9, and a C-shaped frame 12 is sleeved on the outside of the sliding pin 13, an elastic clip 11 is fixed to the left end of the C-shaped frame 12, and a fixing pin 10 is passed through the middle of the elastic clip 11, the accommodating cavity 3 and the plug-in tube 8 are set in the same number, and the plug-in tube 8 and the fixing pin 10 are fixedly connected, the inner diameter of the accommodating cavity 3 matches the outer diameter of the plug-in tube 8, and the number ratio of the elastic clip 11 and the sliding pin 13 is 1:2.

[0024] The specific operation is as follows: insert the plug-in tube 8 into the accommodating cavity 3, so that when the slide groove 9 and the limit groove 4 coincide with each other, the sliding pin 13 can slide along the slide groove 9 in the direction away from the transverse center axis of the plug-in tube 8 with the help of the elastic force of the elastic clip 11, until it engages with the limit groove 4 to achieve the effect of preliminary positioning, thereby ensuring the coaxiality of the flange 1 and the flange 2 6 during the process of screwing the bolt into the bolt hole 2, and locking the gasket 7 in the gasket groove 5, which is not easy to cause relative displacement and loosening, thereby ensuring the sealing of the connection.

[0025] like Figure 1 and Figure 2 As shown, the bottom of the flange 1 is connected to a movable seat 14, and the surface of the movable seat 14 is connected to a connecting rod 15 through a rotating shaft, the other end of the connecting rod 15 is connected to a slider 16 through a rotating shaft, and a damping spring 17 is arranged between the sliders 16, a sliding rod 18 is passed through the middle of the damping spring 17, and bases 19 are fixed to both ends of the sliding rod 18, the slider 16 and the sliding rod 18 are slidably connected, and two connecting rods 15 and two sliders 16 are arranged respectively.

[0026] The specific operation is as follows: when an external force impacts the top of flange 1, flange 1 will drive the moving seat 14 to move downward, thereby changing the angle of the connecting rod 15, causing the slider 16 to slide on the slide rod 18, and the shock-absorbing spring 17 between the sliders 16 provides a buffer to prevent the flange 1, flange 2 6 and the pipeline connection from loosening.

[0027] In summary, when the chemical pipeline flange with good sealing effect is used, the sliding pin 13 is first pressed to retract the sliding pin 13 into the plug-in tube 8, and then the two plug-in tubes 8 on the right side of the flange plate 2 6 are correspondingly inserted into the accommodating cavity 3 on the left surface of the flange plate 1, so that when the slide groove 9 and the limiting groove 4 coincide with each other, the sliding pin 13 slides along the slide groove 9 in the direction away from the transverse center axis of the plug-in tube 8 by means of the elastic force of the elastic clip 11, until it extends out of the slide groove 9 and forms a snap connection with the limiting groove 4, thereby achieving the effect of preliminary positioning;

[0028] Due to the engagement of the slide groove 9 and the limit groove 4, the flange 1 and the flange 2 6 are closely fitted, the bolt holes 2 on the surfaces of the flange 1 and the flange 2 6 are aligned accordingly, and the gasket 7 is locked in the gasket groove 5, thereby ensuring the coaxiality of the flange 1 and the flange 2 6 in the process of screwing the bolts into the bolt holes 2, preventing the gasket 7 from escaping from the gasket groove 5 or being twisted and deformed, reducing the possibility of leakage of chemical raw materials from the flange 1 and the flange 2 6, and ensuring the sealing performance;

[0029] After the welding of flange 1, flange 2 6 and the pipeline is completed, flange 1 is supported by base 19, so that when external force impacts the top of flange 1, flange 1 drives moving seat 14 to move downward to change the supporting angle of connecting rod 15 to slider 16, so that slider 16 slides on sliding rod 18 to squeeze damping spring 17, and damping spring 17 provides buffering to prevent flange 1, flange 2 6 and pipeline connection from loosening.

[0030] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A chemical pipeline flange with good sealing effect, comprising a flange plate (1) and a plug-in sleeve (8), characterized in that: The left side surface of the flange plate 1 (1) is provided with a receiving cavity (3), and the inner surface of the receiving cavity (3) is provided with a limiting groove (4). The left side surface of the flange plate 1 (1) is also provided with a gasket groove (5), and a gasket (7) is placed in the gasket groove (5). The left side of the gasket (7) is fixed with the flange plate 2 (6). The plug-in tube (8) is arranged on the right side of the flange plate 2 (6), and the top and bottom of the plug-in tube (8) are provided with a sliding groove (9). A sliding pin (13) is inserted into the sliding groove (9), and the outer surface of the sliding pin (13) is sleeved with a C-shaped frame (12). The left end of the C-shaped frame (12) is fixed with an elastic clip (11), and the middle part of the elastic clip (11) is provided with a fixing pin (10).

2. A chemical pipeline flange with good sealing effect according to claim 1, characterized in that: Bolt holes (2) are provided at the edges of the surfaces of flange one (1) and flange two (6), and the outer diameters of flange one (1) and flange two (6) are consistent.

3. A chemical pipeline flange with good sealing effect according to claim 1, characterized in that: The accommodating chamber (3) and the plug-in cylinder (8) are provided in the same number, and the plug-in cylinder (8) and the fixing pin (10) are fixedly connected.

4. A chemical pipeline flange with good sealing effect according to claim 1, characterized in that: The inner diameter of the accommodating cavity (3) matches the outer diameter of the plug-in cylinder (8), and the number ratio of the elastic clip (11) and the sliding pin (13) is 1:

2.

5. A chemical pipeline flange with good sealing effect according to claim 1, characterized in that: The bottom of the flange plate 1 (1) is connected to a moving seat (14), and the surface of the moving seat (14) is connected to a connecting rod (15) via a rotating shaft.

6. A chemical pipeline flange with good sealing effect according to claim 5, characterized in that: The other end of the connecting rod (15) is connected to a slider (16) via a rotating shaft, and a damping spring (17) is arranged between the sliders (16).

7. A chemical pipeline flange with good sealing effect according to claim 6, characterized in that: A slide bar (18) is passed through the middle of the vibration-damping spring (17), and bases (19) are fixed at both ends of the slide bar (18).

8. A chemical pipeline flange with good sealing effect according to claim 7, characterized in that: The slider (16) and the slide rod (18) are slidably connected, and two connecting rods (15) and two sliders (16) are provided.

Images