High-air-tightness plate type flat welding flange

Abstract

The utility model relates to the technical field of flange plates, in particular to a high-air-tightness plate type flat welding flange which comprises a first flange body and a second flange body, the first flange body and the second flange body are both of an annular structure and can be combined into a whole, and a deformable sealing piece is arranged between the first flange body and the second flange body. A plurality of first through holes and counter bores are evenly formed in the first flange body, the first through holes penetrate through the wall body of the first flange body, the counter bores are formed inwards from one side face of the first flange body, the first through holes and the counter bores are formed in the first flange body in a staggered mode, and a plurality of second through holes are evenly formed in the second flange body. The second through holes penetrate through the wall body of the second flange body, part of the second through holes correspond to the first through holes and are coaxially arranged, the other part of the second through holes correspond to the counter bores and are coaxially arranged, and first locking pieces and second locking pieces are connected into the second through holes in a matched mode.

Description

Technical Field

[0001] The utility model relates to the technical field of flanges, in particular to a high-air-tightness plate-type flat-weld flange. Background Art

[0002] Slip-on flange is a common flange used to connect to containers or pipes. Usually, slip-on flanges are used in pipeline systems with relatively low pressure levels and where pressure fluctuations, vibrations, and oscillations are not serious. The advantage of the slip-on flange is that it is easier to align the flange during welding and assembly, and it is relatively cheap, so it has been widely used. However, since the surface of the existing slip-on flange is too smooth, a gasket needs to be placed between the two butting surfaces during docking, and since the gasket and the connection surface are flat, the air tightness is poor. In order to improve the air tightness, operators usually open grooves on the surface of the slip-on flange to increase friction and air tightness. For example, Chinese patent document CN202121468346.6 discloses a high-air-tightness plate-type slip-on flange, including a first flange and a second flange. The right end surface of the first flange is evenly provided with a plurality of tightening mechanisms for tightening multiple bolts at the same time, and the surface of the first flange is provided with a first tightening mechanism located inside the tightening mechanism. The first connection hole passes through the surface of the first flange; the second flange surface is evenly provided with a plurality of second connection holes, and the second connection holes pass through the surface of the second flange; a bolt is provided inside the tightening mechanism, and the bolt is loosely matched with the first connection hole and the second connection hole; the left end surface of the second flange is fixedly connected to the second connection hole position with a fixing ring, and a nut is snap-fitted inside the fixing ring, and the nut is threadedly matched with the bolt; the first flange and the second flange surfaces are respectively provided with a first sealing gasket and a second sealing gasket at the contact position between each other; the above patent utilizes the grooves on the surface and drives all the bolts to rotate and tighten at the same time during connection, thereby improving the airtightness effect. However, the use of the bolt not only requires controlling the stability of the connection between the first flange and the second flange, but also requires controlling the stability of the connection between the high-airtightness plate-type flat-welded flange and the workpiece. One bolt needs to perform both sealing and connecting operations at the same time, which can easily lead to poor sealing and affect the stability of use.

[0003] Therefore, it is necessary for technical personnel in this field to provide a high-airtightness plate-type flat-weld flange to improve the sealing effect and ensure the stability of the connection. Utility Model Content

[0004] The utility model aims to provide a high-air-tightness plate-type flat-weld flange to solve the technical problem in the prior art that the surface of the flat-weld flange is too smooth and the gasket and the connection surface are flat, resulting in poor air-tightness.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a high-gas-tightness plate-type flat welding flange, comprising a first flange body and a second flange body, the first flange body and the second flange body both having an annular structure and being combinable into an integral body, a deformable sealing member being provided between the first flange body and the second flange body, a plurality of first through holes and countersunk holes being evenly provided on the first flange body, the first through holes penetrating the wall of the first flange body, the countersunk holes being opened inward from one side surface of the first flange body, the first through holes and the countersunk holes being staggered on the first flange body, a plurality of second through holes being evenly provided on the second flange body, the second through holes penetrating the wall of the second flange body, some of the second through holes corresponding to the first through holes and being coaxially arranged, and another part of the second through holes corresponding to the countersunk holes and being coaxially arranged, a first locking member and a second locking member being cooperatively connected in the second through hole, one end of the first locking member abutting the side surface of the second flange body, the other end of the first locking member passing through the second through hole and extending to the first through hole; one end of the second locking member abutting the side surface of the second flange body, the other end of the second locking member passing through the second through hole and extending into the countersunk hole.

[0006] Furthermore, a groove is provided on the surface of the first flange body facing the second flange body, and the sealing member is fitted and connected in the groove, and the sealing member is located between the first flange body and the second flange body.

[0007] Furthermore, a first sealing ring is provided on the surface of the first flange body away from the second flange body, and a plurality of second sealing rings are provided on the surface of the second flange body facing the first flange body.

[0008] Furthermore, part of the second sealing ring is located between the first flange body and the second flange body, and another part of the second sealing ring is located between the sealing element and the second flange body.

[0009] Furthermore, the first sealing ring and the second sealing ring are made of rubber.

[0010] Furthermore, the countersunk hole is a threaded hole, and the second locking piece extends into the countersunk hole and is threadedly connected to the countersunk hole.

[0011] Furthermore, the first locking member extends into the first through hole, passes through the first through hole and extends outwards, and a nut is threadedly connected to the end of the first locking member located outside the first flange body.

[0012] Furthermore, the axes of the first through hole and the counterbore are parallel to the axis of the first flange body.

[0013] The utility model arranges the countersunk hole and the second through hole correspondingly between the first flange body and the second flange body, and uses the second locking piece to pass through the second through hole and be threadedly connected to the countersunk hole, so as to realize that the first flange body and the second flange body are locked together as a whole to ensure air tightness; at the same time, the second through hole and the first through hole are arranged correspondingly to each other, and the first locking piece is used to sequentially pass through the second through hole and the first through hole and the pipeline equipment to realize the installation of the high airtightness plate type flat welding flange to the pipeline equipment. In this way, there is no direct connection between the locking device for controlling air tightness (i.e., the second locking piece) and the locking device for controlling installation (i.e., the first locking piece), and each component has its own function, thereby ensuring air tightness and installation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the high airtightness plate-type flat welding flange of the utility model.

[0015] Figure 2 It is an exploded view of the high airtightness plate-type flat welding flange of the utility model.

[0016] Figure 3 yes Figure 2 Another direction view.

[0017] Figure 4 It is a top view of the high airtightness plate-type flat welding flange of the utility model.

[0018] Figure 5 It is a bottom view of the high airtightness plate-type flat welding flange of the utility model.

[0019] Figure 6 yes Figure 4 Cross-sectional view along AA.

[0020] Figure 7 yes Figure 4 Cross-sectional view along BB.

[0021] Figure 8 yes Figure 6 A partial enlarged schematic diagram of the middle C area.

[0022] The components in the accompanying drawings are marked as follows: 10. First flange body; 11. First through hole; 12. Countersunk hole; 13. Groove; 14. Sealing member; 15. First sealing ring; 19. Limiting portion; 20. Second flange body; 21. Second through hole; 22. First locking member; 23. Second locking member; 24. Second sealing ring. DETAILED DESCRIPTION

[0023] The present invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, and therefore only shows the components related to the present invention.

[0024] See also Figures 1-5 The present invention provides a high-gas-tightness plate-type slip-on flange, comprising a first flange body 10 and a second flange body 20. The first flange body 10 and the second flange body 20 are both annular structures and can be combined into one body. The first flange body 10 and the second flange body 20 have the same inner diameter and outer diameter. The high-gas-tightness plate-type slip-on flange described in the present invention is formed by combining the first flange body 10 and the second flange body 20 into one body, thereby improving the overall quality of the flange and reducing production difficulty and cost.

[0025] Further, see Figures 6-7 A plurality of first through holes 11 and countersunk holes 12 are evenly provided on the first flange body 10. The first through holes 11 pass through the wall of the first flange body 10, and the countersunk holes 12 are opened inward from one side of the first flange body 10. The first through holes 11 and the countersunk holes 12 are staggered on the first flange body 10, and the axes of the first through holes 11 and the countersunk holes 12 are parallel to the axis of the first flange body 10.

[0026] The second flange body 20 is uniformly formed with a plurality of second through holes 21 extending through the wall of the second flange body 20. The number of second through holes 21 is equal to the total number of first through holes 11 and countersunk holes 12. Some second through holes 21 correspond to and are coaxially arranged with the first through holes 11, while others correspond to and are coaxially arranged with the countersunk holes 12.

[0027] A first locking member 22 and a second locking member 23 are cooperatively connected in the second through hole 21. The first locking member 22 and the second locking member 23 include but are not limited to bolts. One end of the first locking member 22 abuts the side surface of the second flange body 20, and the other end of the first locking member 22 passes through the second through hole 21 and extends to the first through hole 11; one end of the second locking member 23 abuts the side surface of the second flange body 20, and the other end of the second locking member 23 passes through the second through hole 21 and extends to the countersunk hole 12.

[0028] The countersunk hole 12 is a threaded hole. The second locking piece 23 extends into the countersunk hole 12 and is threadedly connected to the countersunk hole 12, thereby locking the first flange body 10 and the second flange body 20 into one. At the same time, the first locking piece 22 extends into the first through hole 11 and then passes through the first through hole 11 and extends outward. A nut (not shown) is threadedly connected to the end of the first locking piece 22 located outside the first flange body 10.

[0029] It is understood that the length of the first locking member 22 varies depending on the component being locked, and the specific length is not limited. After one end of the first locking member 22 is inserted through the pipeline equipment (not shown), the nut is threadedly connected to the first locking member 22, thereby completing the installation of the high-airtightness plate-type flat-weld flange to the pipeline equipment. Preferably, the length of the second locking member 23, which is connected to the counterbore 12, is less than the length of the first locking member 22, which is connected to the first through hole 11, to ensure stability in use.

[0030] The utility model sets the countersunk hole 12 and the second through hole 21 to correspond to each other, and uses the second locking piece 23 to pass through the second through hole 21 and be threadedly connected to the countersunk hole 12, so as to lock the first flange body 10 and the second flange body 20 into one body, thereby ensuring air tightness; at the same time, the second through hole 21 and the first through hole 11 are set to correspond to each other, and the first locking piece 22 is used to sequentially pass through the second through hole 21 and the first through hole 11 and the pipeline equipment, so as to achieve the installation of the high airtightness plate type flat welding flange to the pipeline equipment. In this way, there is no direct connection between the locking device for controlling air tightness (i.e., the second locking piece 23) and the locking device for controlling installation (i.e., the first locking piece 22), and each component has its own function, thereby ensuring air tightness and installation stability.

[0031] See also Figures 6-8 A groove 13 is provided on the surface of the first flange body 10 facing the second flange body 20. A sealing member 14 is fitted and connected in the groove 13. The sealing member 14 is made of rubber and is located between the first flange body 10 and the second flange body 20 to provide a sealing effect. In this embodiment, a first sealing ring 15 is provided on the surface of the first flange body 10 away from the second flange body 20, and a plurality of second sealing rings 24 are provided on the surface of the second flange body 20 facing the first flange body 10. The first sealing ring 15 is used to improve the sealing effect between the high-airtightness plate-type flat-weld flange and the pipeline equipment, and the second sealing ring 24 is used to improve the sealing effect between the first flange body and the second flange body 20 to ensure airtightness.

[0032] In this embodiment, part of the second sealing ring 24 is located between the first flange body 10 and the second flange body 20, and the other part of the second sealing ring 24 is located between the sealing member 14 and the second flange body 20. The first sealing ring 15 and the second sealing ring 24 are both made of rubber, so that the sealing member 14 and the second sealing ring 24 abut against each other as a whole, thereby increasing the thickness of the sealing member 14. At the same time, multiple second sealing rings 24 increase the sealing area between the first flange body 10 and the second flange body 20 to ensure the sealing effect.

[0033] The specific operation method of the utility model is as follows: the sealing member 14 is installed between the first flange body 10 and the second flange body 20, the first flange body 10 and the second flange body 20 are combined into one body, and the second locking member 23 is screwed into the countersunk hole 12 to complete the assembly, thereby obtaining a high-gas-tightness plate-type flat welding flange. The assembled high-gas-tightness plate-type flat welding flange is installed on the pipeline equipment, and the first locking member 22 is sequentially passed through the second through hole 21 and the first through hole 11 and the pipeline equipment to achieve the installation of the high-gas-tightness plate-type flat welding flange on the pipeline equipment, thereby ensuring the airtight effect.

[0034] The utility model arranges the countersunk hole 12 and the second through hole 21 correspondingly between the first flange body 10 and the second flange body 20, and uses the second locking piece 23 to pass through the second through hole 21 and be threadedly connected to the countersunk hole 12, so as to realize that the first flange body 10 and the second flange body 20 are locked together as a whole to ensure air tightness; at the same time, the second through hole 21 and the first through hole 11 are arranged correspondingly to each other, and the first locking piece 22 is used to sequentially pass through the second through hole 21 and the first through hole 11 and the pipeline equipment to realize the installation of the high airtightness plate type flat welding flange to the pipeline equipment. In this way, there is no direct connection between the locking device for controlling air tightness (i.e., the second locking piece 23) and the locking device for controlling installation (i.e., the first locking piece 22), and each component has its own function, thereby ensuring air tightness and installation stability.

[0035] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A high-air-tightness plate-type flat-weld flange, comprising a first flange body (10) and a second flange body (20), wherein the first flange body (10) and the second flange body (20) are both annular structures and can be combined into one body, characterized in that: A deformable sealing member (14) is provided between the first flange body (10) and the second flange body (20). A plurality of first through holes (11) and countersunk holes (12) are uniformly provided on the first flange body (10). The first through holes (11) pass through the wall of the first flange body (10), and the countersunk holes (12) are opened inward from one side of the first flange body (10). The first through holes (11) and the countersunk holes (12) are staggered on the first flange body (10). A plurality of second through holes (21) are uniformly provided on the second flange body (20). The second through holes (21) pass through the wall of the second flange body (20), and part of the second through holes (21) pass through the wall of the second flange body (20). The second through hole (21) corresponds to the first through hole (11) and is coaxially arranged. The other part of the second through hole (21) corresponds to the counterbore (12) and is coaxially arranged. A first locking member (22) and a second locking member (23) are cooperatively connected in the second through hole (21). One end of the first locking member (22) abuts against the side surface of the second flange body (20), and the other end of the first locking member (22) passes through the second through hole (21) and extends to the first through hole (11); one end of the second locking member (23) abuts against the side surface of the second flange body (20), and the other end of the second locking member (23) passes through the second through hole (21) and extends into the counterbore (12).

2. The high airtightness plate type flat welding flange according to claim 1, characterized in that: A groove (13) is provided on the surface of the first flange body (10) facing the second flange body (20), and a sealing member (14) is fitted and connected in the groove (13). The sealing member (14) is located between the first flange body (10) and the second flange body (20).

3. The high airtightness plate type flat welding flange according to claim 1, characterized in that: A first sealing ring (15) is provided on the surface of the first flange body (10) away from the second flange body (20), and a plurality of second sealing rings (24) are provided on the surface of the second flange body (20) facing the first flange body (10).

4. The high airtightness plate type flat welding flange according to claim 3, characterized in that: Part of the second sealing ring (24) is located between the first flange body (10) and the second flange body (20), and another part of the second sealing ring (24) is located between the sealing element (14) and the second flange body (20).

5. The high airtightness plate type flat welding flange according to claim 4, characterized in that: The first sealing ring (15) and the second sealing ring (24) are made of rubber.

6. The high airtightness plate type flat welding flange according to claim 1, characterized in that: The countersunk hole (12) is a threaded hole, and the second locking member (23) extends into the countersunk hole (12) and is threadedly connected to the countersunk hole (12).

7. The high airtightness plate type flat welding flange according to claim 6, characterized in that: The first locking member (22) extends into the first through hole (11), passes through the first through hole (11) and extends outwards. A nut is threadedly connected to the end of the first locking member (22) located outside the first flange body (10).

8. The high airtightness plate type flat welding flange according to claim 7, characterized in that: The axes of the first through hole (11) and the countersunk hole (12) are parallel to the axis of the first flange body (10).

Images