Pipeline connection assembly and coating equipment

Abstract

The utility model relates to a pipeline connection assembly and coating equipment, including two quick-release flanges and a metal sealing ring and a center ring arranged between the quick-release flanges, the metal sealing ring is sleeved on the center ring, and the quick-release flanges are compressed by fasteners. The utility model seals and connects the inner cavity of the quick-release flanges through the metal sealing ring and the center ring, and the use of the metal sealing ring can improve the high temperature resistance of the sealing ring, improve the service life of the sealing ring and increase the vacuum performance between the quick-release flanges.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline sealing, and in particular relates to a pipeline connection component and coating equipment. Background Art

[0002] Vacuum pipelines are pipeline systems that maintain a low air pressure or a complete vacuum state in a highly sealed space. This type of pipeline can effectively reduce air resistance, improve transmission efficiency, and reduce energy consumption, so it has broad application prospects in many fields. Pipes connected with flanges can be easily maintained and replaced with pipeline components. Since flange connections are easy to disassemble and install, the time and labor costs for maintenance and replacement of pipeline components can be reduced, and the downtime of pipelines can be reduced, thereby improving production efficiency.

[0003] Generally, small vacuum equipment is equipped with vacuum quick-release flanges. This flange is sealed with fluororubber O-rings and clamped with matching clamps. It is easy to assemble, compact and reusable. However, since the fluororubber sealing ring can withstand a temperature of about 200°, it cannot meet the process requirements of some coating equipment, which will greatly reduce the life of the sealing ring or cause vacuum failure. Utility Model Content

[0004] The utility model aims to solve the problem that the fluororubber sealing ring used in the flange seal of the vacuum pipe connection has poor high temperature resistance, which leads to a reduced service life of the sealing ring and vacuum failure, and cannot meet the process requirements under high temperature environment. A pipe connection assembly is provided, which adopts a metal sealing ring to improve the high temperature resistance, and sets the metal spring sealing ring between the quick-release flanges for sealing through a matching center ring. The main concept is:

[0005] A pipe connection assembly includes two quick-release flanges and a metal sealing ring and a center ring arranged between the quick-release flanges. The metal sealing ring is sleeved on the outside of the center ring, and the quick-release flanges press the metal sealing ring through fasteners. This solution provides a metal sealing ring and a center ring matching the metal sealing ring, and the metal sealing ring is sleeved on the outside of the center ring. The center ring positions the quick-release flange and the metal sealing ring, so that the metal sealing ring and the center ring are both arranged between the sealing surfaces of the two quick-release flanges, the quick-release flanges are connected by fasteners, and the inner cavity of the quick-release flanges is sealed and connected by the metal sealing ring and the center ring. The high temperature resistance of the metal sealing ring can reach ℃, which improves the service life of the sealing ring and increases the vacuum performance between the quick-release flanges.

[0006] Preferably, the inner wall of the quick release flange is provided with a positioning groove, and the center ring is constrained in the positioning groove. The inner wall of the quick release flange is provided with a positioning groove, which is opened on the sealing end surface of the quick release flange for positioning on the center ring.

[0007] The second aspect of the utility model solves the problem that the structure in the flange seal is not compact enough. Furthermore, an annular boss is provided on the outer wall of the center ring, and the annular boss is provided in the middle position of the center ring in the axial direction. The center ring is provided with a stepped surface on the side of the annular boss, and a metal sealing ring is sleeved on the annular boss. The annular boss is provided in the middle position of the axial direction of the outer wall of the center ring, so that both ends of the center ring can be positioned with the quick-release flange respectively, and the quick-release flanges at both ends of the center ring are quickly coaxially arranged, and the metal sealing ring is directly sleeved on the annular boss, and the metal sealing ring cannot be stretched and deformed at will, and there is no need to open a bayonet on the annular boss to prevent the positioning of the metal sealing ring, so that the connection structure of the center ring between the sealing surfaces of the quick-release flanges is more compact and occupies less space.

[0008] Preferably, the stepped surface of the center ring is arranged in the positioning groove, and the stepped surface abuts against the positioning groove. The stepped surface of the center ring includes the side wall of the annular boss and the end surface of the center ring, and the end surface of the center ring is used to restrict the radial movement of the quick-release flange to achieve coaxial positioning.

[0009] The third aspect of the utility model is used to solve the problem that the sealing ring cannot be reused. Further, the metal sealing ring is a spring sealing ring structure, and the metal sealing ring is elastic. The metal sealing ring is elastic, and the metal spring is compressed to form an outward tension, which causes the metal sealing ring to be closely attached to the sealing surface of the quick-release flange to form a vacuum seal. After disassembly, it can be restored to its original state under the elastic action of the metal spring and can be reused.

[0010] Preferably, the fastener includes a compression piece and a fastening bolt, wherein the compression piece is arranged outside the quick-release flange, and the compression pieces are connected by the fastening bolts. The compression piece is sleeved outside the quick-release flange, the compression pieces are arranged relative to each other, and a plurality of threaded holes are locally arranged on the compression piece, so that the compression pieces on the two quick-release flanges are sealed and fastened by the fastening bolts.

[0011] The fourth aspect of the utility model is used to solve the problem of inconvenient disassembly and installation after the flange is sealed. Furthermore, the compression piece is composed of two semicircular compression pieces and a connecting piece, and the two semicircular compression pieces are connected by the connecting piece. The compression piece is formed by combining two semicircular compression pieces, and the two semicircular compression pieces are connected by the connecting piece to form a complete compression piece. The disassembly and assembly of the connecting piece is arranged on the outside, and the compression piece can be disassembled separately, avoiding the need to disassemble the flange when the entire compression piece is disassembled, thereby improving the convenience of disassembly, and the connecting piece can indirectly realize that a single-side flange is matched with the entire compression piece, thereby improving the convenience of installation.

[0012] Preferably, the compression piece is provided with an inner stepped groove, the inner stepped groove abuts against the quick release flange, and the compression pieces provided on the two quick release flanges are locked by bolts. The inner stepped groove is provided to be in the same shape as the quick release flange, which can improve the adaptability of the compression piece and the quick release flange, so that the compression piece is evenly pressed on the quick release flange and the metal sealing ring in the quick release flange.

[0013] Preferably, a pipeline is arranged in the quick-release flange.

[0014] Furthermore, a coating device includes a pipeline connection assembly.

[0015] The beneficial effects of the utility model are as follows: a metal sealing ring and a center ring matching the metal sealing ring are provided, the metal sealing ring is sleeved on the outside of the center ring, the center ring positions the quick-release flange and the metal sealing ring, so that the metal sealing ring and the center ring are both provided between the sealing surfaces of the two quick-release flanges, the quick-release flanges are connected by fasteners, the inner cavities of the quick-release flanges are sealed and connected by the metal sealing ring and the center ring, the high temperature resistance of the metal sealing ring can reach 800°C, the service life of the sealing ring is improved and the vacuum performance between the quick-release flanges is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a structural cross-sectional view of the utility model.

[0018] Figure 3 It is a partial method diagram of the utility model.

[0019] Figure 4 It is a structural schematic diagram of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the center ring of the utility model.

[0021] Figure 6 It is a structural schematic diagram of the pressing sheet of the utility model.

[0022] Figure 7 It is a structural schematic diagram of the metal sealing ring of the utility model.

[0023] The reference numerals include: 1, quick-release flange; 101, positioning groove; 2, metal sealing ring; 3, center ring; 301 annular boss; 302, stepped surface; 4, pressing piece; 401, semicircular pressing piece; 402, connecting piece; 403, inner stepped groove; 5, fastening bolt. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are only examples of devices and methods consistent with some aspects of the present disclosure as detailed in the attached claims.

[0025] It should be noted that all actions to obtain signals, information or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where they are located, and with the authorization given by the owner of the corresponding device.

[0026] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", are defined according to the corresponding parts' own contours. The terms used in the present disclosure, such as "first" and "second", etc., are used to distinguish one element from another element and do not have order and importance.

[0027] Embodiment 1:

[0028] like Figure 1-Figure 3 As shown, a pipe connection assembly includes two quick-release flanges 1 and a metal sealing ring 2 and a center ring 3 arranged between the quick-release flanges 1. The metal sealing ring 2 is sleeved on the outside of the center ring 3, and the quick-release flanges 1 are pressed against the metal sealing ring by fasteners.

[0029] In this embodiment, a metal sealing ring 2 and a center ring 3 matched with the metal sealing ring 2 are provided. The metal sealing ring 2 is sleeved on the outside of the center ring 3. The center ring 3 positions the quick-release flange 1 and the metal sealing ring 2, so that the metal sealing ring 2 and the center ring 3 are both arranged between the sealing surfaces of the two quick-release flanges 1. The quick-release flanges 1 are connected by fasteners, and the inner cavity of the quick-release flanges 1 is sealed and connected by the metal sealing ring 2 and the center ring 3. The high temperature resistance of the metal sealing ring 2 can reach 800°C, which improves the service life of the sealing ring and increases the vacuum performance between the quick-release flanges.

[0030] The inner wall of the quick release flange 1 is provided with a positioning groove 101, and the center ring 3 is constrained in the positioning groove 101. The inner wall of the quick release flange is provided with a positioning groove, which is opened on the sealing end surface of the quick release flange for positioning on the center ring.

[0031] The positioning groove 101 of this embodiment can be set as a stepped groove, so that the center ring 3 can be constrained in the positioning grooves 101 of the two quick-release flanges 1.

[0032] Embodiment 2:

[0033] like Figure 4As shown, an annular boss 301 is arranged on the outer wall of the center ring 3 of this embodiment, and the annular boss 301 is arranged in the middle position of the center ring 3 in the axial direction. The center ring 3 is provided with a step surface 302 on the side of the annular boss 301, and the annular boss 301 is sleeved with a metal sealing ring 2.

[0034] An annular boss 301 is provided at the axial middle position of the outer wall of the center ring 3, so that both ends of the center ring 3 can be positioned with the quick-release flange 1 respectively, and the quick-release flanges 1 at both ends of the center ring 3 are quickly coaxially arranged, and the metal sealing ring 2 is directly sleeved on the annular boss 301. The metal sealing ring 2 cannot be stretched and deformed at will, and there is no need to open a bayonet on the annular boss 301 to prevent the metal sealing ring 2 from being positioned, so that the connection structure of the center ring 3 between the sealing surfaces of the quick-release flange 1 is more compact and occupies less space. By setting the center ring 3 without the bayonet for positioning the sealing ring in this embodiment, the problem of the structure in the flange seal being not compact enough can be solved.

[0035] The stepped surface 302 of the center ring 3 is arranged in the positioning groove 101, and the stepped surface 302 abuts against the positioning groove 101. The stepped surface of the center ring includes the side wall of the annular boss and the end face of the center ring. The end face of the center ring 3 is used to restrict the radial movement of the quick-release flange 1 to achieve axial positioning. The side wall of the annular boss 301 is used to restrict the axial movement of the quick-release flange.

[0036] The metal sealing ring 2 is arranged outside the annular boss 301, and the metal sealing ring is radially limited by the center ring so that it is within the sealing surface range of the flange, and the height of the annular boss is not higher than the outer diameter of the metal sealing ring 2, so that the sealing surface of the quick-release flange 1 on the annular boss 301 can abut against the metal sealing ring 2.

[0037] Embodiment 3:

[0038] like Figure 7 As shown, the metal sealing ring 2 of this embodiment is a spring sealing ring structure, and the metal sealing ring 2 is elastic. The metal sealing ring 2 is elastic, and the metal spring is compressed to form an outward tension, which causes the metal sealing ring 2 to be closely attached to the sealing surface of the quick-release flange to form a vacuum seal. After disassembly, it can be restored to its original state under the elastic action of the metal spring and can be reused.

[0039] The fasteners include a compression piece 4 and a fastening bolt 5, wherein the compression piece 4 is arranged outside the quick-release flange 1, and the compression pieces 4 are connected by the fastening bolt 5. The compression piece is sleeved outside the quick-release flange, and the compression pieces are arranged opposite to each other. A plurality of threaded holes are partially arranged on the end surfaces opposite to each other between the compression pieces 4, and the threaded holes are arranged as through holes, so that the compression pieces 4 on the two quick-release flanges 1 are sealed and fastened by the fastening bolts 5.

[0040] like Figure 6As shown, the pressing piece 4 is composed of two semicircular pressing pieces 401 and a connecting piece 402, and the two semicircular pressing pieces 401 are connected by the connecting piece 402. The pressing piece 4 is formed by combining two semicircular pressing pieces 401, and the two semicircular pressing pieces 401 are connected by the connecting piece 402 to form a complete pressing piece 4; since the connecting piece 402 is arranged outside the semicircular pressing piece 401, the pressing piece 4 can be disassembled separately by disassembling the connecting piece 402, avoiding the need to disassemble the flange when the entire pressing piece 4 is disassembled, thereby improving the convenience of disassembly, and the connecting piece 402 can indirectly realize that a single-side flange matches the entire pressing piece 4, thereby improving the convenience of installation; this embodiment can solve the problem of inconvenient disassembly and installation after the flange is sealed.

[0041] like Figure 6 As shown, the pressing force required for the spring sealing ring to seal is relatively large, and a conventional quick-release clamp cannot be used. In this embodiment, a matching pressing piece 4 is provided, and the pressing piece 4 installed on the quick-release flange is tightened; under the action of the butt plug 5, the quick-release flange 1 is axially pressed, so that the quick-release flange 1 presses the spring sealing ring. Under the elastic force of the spring sealing ring and the pressure of the quick-release flange 1, the spring sealing ring and the quick-release flange 1 are tightly fitted to achieve vacuum sealing.

[0042] In order to make the disassembly of the connecting piece more efficient, a waist-shaped hole is provided on the connecting piece 402 of the present embodiment, and two semicircular pressing pieces 401 constituting the pressing piece 4 are processed at one end of the connection, so that a plane is provided on the outer circular contour surface where the semicircular pressing pieces 401 are connected, and a threaded hole is provided on the plane, and the inner diameter of the threaded hole is smaller than the height of the waist-shaped hole, so that two bolts pass through the waist-shaped hole and are respectively arranged in the threaded holes of the two semicircular pressing pieces 401, so as to realize the connection of the connecting piece 402 to the two semicircular pressing pieces 401; a gasket can also be provided between the connecting piece and the screw to enhance the tightening effect. In addition, two threaded holes can be provided on the connecting piece 401 according to the distance between the two semicircular pieces 401, so that the threaded hole on the semicircular pressing piece 401 is coaxially arranged with the threaded hole on the connecting piece 401, so as to realize the precise installation of the semicircular pressing piece 401 and the connecting piece 402.

[0043] like Figure 5 As shown, the pressing piece 4 is provided with an inner stepped groove 403, the inner stepped groove 403 is in contact with the quick release flange 1, and the pressing pieces 4 provided with the two quick release flanges 1 are locked by bolts 404. The inner stepped groove is provided to be in the same shape as the quick release flange, which can improve the adaptability of the pressing piece and the quick release flange, so that the pressing piece is pressed evenly on the quick release flange and the metal sealing ring in the quick release flange.

[0044] The contact surfaces between the quick-release flange 1 and the pressing piece 4 in this embodiment match each other. This embodiment selects the inclined surface matching method and sets the quick-release flange 1 as an inclined surface. The contact area can be increased and a wedge-shaped gap can be formed through the matching of the inclined surface. The pressing piece 4 increases the pressure on the quick-release flange 1 compared with the plane matching, thereby further improving the sealing effect between the quick-release flanges.

[0045] A pipeline is arranged in the quick-release flange 1. The metal sealing ring 2 and the center ring 3 arranged in the quick-release flange 1 improve the positioning accuracy and heat resistance of the quick-release flange 1 and the performance of the pipeline connection. A pressing piece 4 composed of a semicircular pressing piece 401 and a connecting piece 402 is arranged on the outside of the quick-release flange 1 to improve the disassembly efficiency between the pressing piece 4 and the quick-release flange 1.

[0046] The coating equipment is provided with a pipeline connection assembly.

[0047] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A pipe connection assembly, characterized in that: It comprises two quick-release flanges (1) and a metal sealing ring (2) and a center ring (3) arranged between the quick-release flanges (1); the metal sealing ring (2) is sleeved on the outside of the center ring (3); and the quick-release flanges (1) are pressed against the metal sealing ring by fasteners.

2. A pipe connection assembly according to claim 1, characterized in that: The inner wall of the quick-release flange (1) is provided with a positioning groove (101), and the center ring (3) is constrained in the positioning groove (101).

3. A pipe connection assembly according to claim 1, characterized in that: The outer wall of the center ring (3) is provided with an annular boss (301), which is arranged at the middle position of the center ring (3) in the axial direction. The center ring (3) is provided with a stepped surface (302) on the side of the annular boss (301), and the annular boss (301) is sleeved with a metal sealing ring (2).

4. A pipe connection assembly according to claim 3, characterized in that: The stepped surface (302) of the center ring (3) is arranged in the positioning groove (101), and the stepped surface (302) abuts against the positioning groove (101).

5. A pipe connection assembly according to claim 1, characterized in that: The metal sealing ring (2) is a spring sealing ring structure, and the metal sealing ring (2) is elastic.

6. A pipe connection assembly according to claim 1, characterized in that: The fastener comprises a compression piece (4) and a fastening bolt (5); the compression piece (4) is arranged outside the quick-release flange (1); and the compression pieces (4) are connected via the fastening bolt (5).

7. A pipe connection assembly according to claim 6, characterized in that: The pressing sheet (4) is composed of two semicircular pressing sheets (401) and a connecting sheet (402), and the two semicircular pressing sheets (401) are connected via the connecting sheet (402).

8. A pipe connection assembly according to claim 6, characterized in that: The compression piece (4) is provided with an inner stepped groove (403), and the inner stepped groove (403) is in contact with the quick-release flange (1). The compression pieces (4) provided on the two quick-release flanges (1) are locked by fastening bolts (5).

9. A pipe connection assembly according to claim 1, characterized in that: A pipeline is arranged inside the quick-release flange (1).

10. A coating device, characterized in that: A pipeline connection assembly comprising any one of claims 1-9.

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