Double-sided enamel insert tube and production process thereof

Abstract

The invention relates to the technical field of pipe bodies, in particular to a double-sided enamel insert pipe and a production process thereof.The double-sided enamel insert pipe comprises pipe bodies, flange plates are fixed to the two ends of the pipe bodies, a plurality of bolt holes are formed in the surfaces of the flange plates, connecting plates are arranged in the two flange plates between the two pipe bodies, and splicing rings are integrally formed on the two sides of the connecting plates; the splicing rings are inserted into the surfaces of the flange plates, inserting pipes are integrally formed on the sides, away from the connecting disc, of the splicing rings, the inserting pipes are inserted into the pipe body, screw rods are fixedly inserted into the surfaces of the connecting disc, the two ends of each screw rod penetrate through the flange plates on the two sides respectively, and nuts are arranged at the ends of the screw rods in a sleeving and threaded mode. The flange plate has the advantages that the reserved groove is formed in the surface of the assembling ring, the sealing gasket is fixed, when the assembling ring is inserted into the embedded groove of the flange plate, the sealing gasket is extruded between the assembling ring and the embedded groove, and leakage of media in a pipeline can be effectively prevented. Meanwhile, the thickness of the sealing gasket is larger than the depth of the reserved groove, enough sealing pressure is guaranteed, and the sealing effect is further enhanced.

Description

Technical Field

[0001] This invention relates to the field of tube technology, specifically to a double-sided enamel insert tube and its manufacturing process. Background Technology

[0002] In the field of pipe connections, especially in scenarios involving double-sided enamel-lined insert pipes, traditional connection methods have many shortcomings. Common pipe connection methods, such as ordinary flange connections, while enabling pipe splicing, have deficiencies in terms of sealing and connection stability.

[0003] On the one hand, traditional connection methods are often inadequate in terms of sealing. During long-term use, leaks can easily occur due to changes in the pressure and temperature of the medium inside the pipeline, as well as the influence of the external environment. For example, relying solely on simple flange gaskets for sealing can lead to gasket aging and deformation, resulting in seal failure, which in turn affects the normal operation of the pipeline system and may even cause safety accidents.

[0004] On the other hand, traditional connection methods are cumbersome to operate during installation, making it difficult to ensure that multiple sets of connecting parts are accurately aligned simultaneously. Especially in connections requiring the simultaneous insertion of multiple screws for fixation, the position of each screw often needs to be adjusted individually, which is not only inefficient but also prone to misalignment between the screws and bolt holes, affecting the quality and stability of the connection. Furthermore, traditional connection methods are also deficient in terms of pre-positioning of connecting parts, making them prone to displacement during installation, increasing the difficulty and error margin of installation.

[0005] Therefore, a new double-sided enamel-lined insert tube connection technology is needed to solve the problems of traditional connection methods in terms of sealing, ease of installation and connection stability. Summary of the Invention

[0006] The purpose of this invention is to provide a double-sided enamel insert tube and its manufacturing process to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a double-sided enamel insert tube, comprising a tube body, both ends of which are fixed with flanges, the surfaces of which have multiple bolt holes, and two flanges between two sets of tube bodies having a connecting plate, both sides of which are integrally formed with assembly rings, which are inserted into the surfaces of the flanges, and the side of the assembly ring away from the connecting plate is integrally formed with an insert tube, which is inserted into the tube body, and a screw is inserted and fixed to the surface of the connecting plate, the two ends of which pass through the flanges on both sides respectively, and a nut is screwed onto the end of the screw.

[0008] Preferably, the flange plate is provided with an embedded groove at the inner ring opening on the side away from the pipe body, the embedded groove is an annular groove, the assembling ring is inserted into the embedded groove, the surface of the assembling ring is provided with a reserved groove, the reserved groove is an annular groove, and the sealing gasket is fixed in the reserved groove and has a thickness greater than the depth of the reserved groove.

[0009] Preferably, the outer ring diameter of the connecting disc is equal to the outer ring diameter of the flange plate, the inner ring opening diameter of the connecting disc is equal to the inner ring opening diameter of the pipe, the surface of the connecting disc is provided with a plurality of through holes, the screw rod and the through hole are one-to-one corresponding, the screw rod is inserted and fixed in the through hole, and the distance from the two ends of the screw rod to the connecting disc is equal.

[0010] Preferably, the two ends of the screw rod are provided with a clamping groove, the clamping groove is an annular groove, and the inner part of the clamping groove is sleeved and fixed with a rubber ring I, and the outer ring diameter of the rubber ring I is greater than the hole diameter of the bolt hole.

[0011] Preferably, the surface of the flange plate close to the connecting disc is provided with a limiting groove, the limiting groove is an annular groove with a circular opening, the inner part of the limiting groove is inserted with a lead-in ring, the lead-in ring is fixed on the surface of the connecting disc, the end of the lead-in ring inserted into the limiting groove is sleeved and fixed with a rubber ring II, and the rubber ring II is a circular ring with a circular cross section.

[0012] A production process of a double-sided enamel insertion pipe, comprising the following steps: placing the connecting disc between the flange plates of the two groups of pipe bodies, pushing the two pipe bodies close, inserting the two insertion pipes on both sides of the connecting disc into the two pipe bodies respectively, inserting the assembling ring into the embedded groove, and inserting the two ends of the screw rod through the bolt holes on the surface of the two flange plates, sleeving and screwing the nut on the end of the screw rod to lock, tightly clamping the connecting disc between the two flange plates, realizing the sealing of the two groups of pipe bodies after connection, and realizing the simultaneous insertion of multiple screw rods into the corresponding bolt holes.

[0013] Preferably, the embedded groove is formed on the surface of the flange plate in advance, which is used for inserting the assembling ring when assembling the two groups of pipe bodies, and the reserved groove is formed on the surface of the assembling ring, and the sealing gasket is fixed in the reserved groove after the assembling ring is inserted into the embedded groove.

[0014] Preferably, multiple screw rods are fixed in corresponding through holes in advance, when the flange plates of the two groups of pipe bodies are close, the bolt holes on the surface of the flange plate are sleeved on the corresponding screw rods, realizing the simultaneous introduction of multiple screw rods on the surface of the flange plate, and then the nut is screwed on the corresponding screw rod to lock.

[0015] Preferably, the clamping groove is formed on the surface of the screw rod in advance, and the rubber ring I is sleeved and fixed in the clamping groove, when the nut is screwed on the screw rod to lock, the nut clamps the rubber ring I, the rubber ring I rebounds to support the nut, and the nut and the screw rod are tightly engaged.

[0016] Preferably, a limiting groove is formed in advance on the surface of the flange plate, guide rings are welded on both sides of the connecting plate, and a fixed rubber ring two is sleeved on one end of the guide ring, after the connecting plate is clamped between the two flange plates, the guide ring and the rubber ring two are squeezed into the limiting groove, so that the pre-limiting of the connecting plate installed between the two flange plates is realized.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] The double-sided enamel inserted pipe and the production process thereof have the following advantages: the reserved groove is formed on the surface of the assembling ring and the sealing gasket is fixed, when the assembling ring is inserted into the embedding groove of the flange plate, the sealing gasket is squeezed between the two, which can effectively prevent the leakage of the medium in the pipeline. Meanwhile, the thickness of the sealing gasket is greater than the depth of the reserved groove, which ensures sufficient sealing pressure and further enhances the sealing effect.

[0019] A plurality of screw rods are fixed on the surface of the connecting plate, and the screw rods correspond to the through holes on the connecting plate one by one, and the distance from the two ends to the connecting plate is equal. During installation, the connecting plate is only needed to be placed between the flange plates of the two groups of pipe bodies, the pipe bodies are pushed close, and the bolt holes on the surface of the flange plate can be simultaneously sleeved on the corresponding screw rods, so that the plurality of screw rods are simultaneously and accurately inserted into the corresponding bolt holes, the installation process is greatly simplified, and the installation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present application;

[0021] Figure 2 It is a structural top view of the present application;

[0022] Figure 3 It is Figure 2 A-A structure sectional view in the present application;

[0023] Figure 4 It is Figure 3 A structure enlarged schematic diagram in the present application;

[0024] Figure 5 It is Figure 4 A structure enlarged schematic diagram in the present application;

[0025] Figure 6 It is a connecting plate structural schematic diagram of the present application;

[0026] Figure 7 It is a pipe body and flange plate connecting structure schematic diagram of the present application.

[0027] In the drawing: pipe body 1, flange plate 2, embedding groove 3, assembling ring 4, inserted pipe 5, reserved groove 6, sealing gasket 7, connecting plate 8, through hole 9, bolt hole 10, screw rod 11, nut 12, clamping groove 13, rubber ring one 14, limiting groove 15, guide ring 16, rubber ring two 17. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme of the present application, and the advantages more clear, complete and clear, the embodiments of the present application are further described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present application, rather than all the embodiments, and are only used to explain the embodiments of the present application, and do not limit the embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0029] Embodiment one, please refer to Figures 1 to 7 The present application provides a technical scheme: a double-sided enamel insert pipe, comprising a pipe body 1, the two ends of the pipe body 1 are fixed with flanges 2, a plurality of bolt holes 10 are formed on the surface of the flanges 2, two flanges 2 between the two groups of pipe bodies 1 are provided with connecting plates 8, the two sides of the connecting plate 8 are integrally formed with assembling rings 4, the assembling ring 4 is inserted on the surface of the flange 2, the side of the assembling ring 4 away from the connecting plate 8 is integrally formed with an insert pipe 5, the insert pipe 5 is inserted in the pipe body 1, the surface of the connecting plate 8 is inserted and fixed with a screw rod 11, the two ends of the screw rod 11 respectively penetrate through the two flanges 2, and the end of the screw rod 11 is sleeved with a nut 12. Place the connecting plate 8 between the flanges 2 of the two groups of pipe bodies 1, push the two pipe bodies 1 close, then insert the two insert pipes 5 on both sides of the connecting plate 8 into the two pipe bodies 1 respectively, and insert the assembling ring 4 into the embedding groove 3, and the two ends of the screw rod 11 penetrate through the bolt holes 10 on the surface of the two flanges 2, and the nut 12 is sleeved and screwed on the end of the screw rod 11 after locking, the connecting plate 8 is tightly clamped between the two flanges 2, realizing the sealing of the two groups of pipe bodies 1 after connection, and realizing that a plurality of screw rods 11 are inserted into the corresponding bolt holes 10 at the same time.

[0030] The side of the flange 2 away from the pipe body 1 is provided with an embedding groove 3 at the inner ring opening, the embedding groove 3 is an annular groove, the assembling ring 4 is inserted in the embedding groove 3, the surface of the assembling ring 4 is provided with a reserved groove 6, the reserved groove 6 is an annular groove, a sealing gasket 7 is fixed in the reserved groove 6, and the thickness of the sealing gasket 7 is greater than the depth of the reserved groove 6. The embedding groove 3 is formed on the surface of the flange 2 in advance, which is used for inserting the assembling ring 4 when the two groups of pipe bodies 1 are assembled, and the reserved groove 6 is formed on the surface of the assembling ring 4, and the sealing gasket 7 is fixed in the reserved groove 6 after the assembling ring 4 is inserted into the embedding groove 3, which is used for sealing after the assembling ring 4 is inserted into the embedding groove 3.

[0031] The outer ring diameter of the connecting disc 8 is equal to the outer ring diameter of the flange plate 2, the inner ring diameter of the connecting disc 8 is equal to the inner ring diameter of the pipe 5, the surface of the connecting disc 8 is provided with a plurality of through holes 9, the screw rod 11 is inserted and fixed in the through hole 9, and the distance from the two ends of the screw rod 11 to the connecting disc 8 is equal. A plurality of screw rods 11 are pre-fixed in the corresponding through holes 9, when the flange plates 2 of the two groups of pipe bodies 1 are close, the bolt holes 10 on the surface of the flange plate 2 are sleeved on the corresponding screw rods 11, the surface of the flange plate 2 is simultaneously introduced into a plurality of screw rods 11, and then the nut 12 is screwed on the corresponding screw rod 11 to lock.

[0032] The two ends of the screw rod 11 are provided with a clamping groove 13, the clamping groove 13 is an annular groove, the rubber ring I 14 is sleeved and fixed in the clamping groove 13, and the outer ring diameter of the rubber ring I 14 is greater than the hole diameter of the bolt hole 10. The clamping groove 13 is pre-formed on the surface of the screw rod 11, and the rubber ring I 14 is sleeved and fixed in the clamping groove 13, when the nut 12 is screwed on the screw rod 11 to lock, the nut 12 clamps the rubber ring I 14, the rubber ring I 14 rebounds to support the nut 12, and the nut 12 and the screw rod 11 are tightly engaged.

[0033] The surface of the flange plate 2 close to the connecting disc 8 is provided with a limiting groove 15, the limiting groove 15 is an annular groove with a circular cross-section, the limiting groove 15 is inserted with a lead-in ring 16, the lead-in ring 16 is fixed on the surface of the connecting disc 8, the one end of the lead-in ring 16 inserted into the limiting groove 15 is sleeved and fixed with a rubber ring II 17, and the rubber ring II 17 is a circular ring with a circular cross-section. The limiting groove 15 is pre-formed on the surface of the flange plate 2, the lead-in ring 16 is welded on the two sides of the connecting disc 8, and the rubber ring II 17 is sleeved and fixed on one end of the lead-in ring 16, after the connecting disc 8 is clamped between the two flange plates 2, the lead-in ring 16 and the rubber ring II 17 are squeezed into the limiting groove 15, and the pre-limiting of the connecting disc 8 installed between the two flange plates 2 is realized.

[0034] In example two, on the basis of example one, a production process of a double-sided enamel inserted pipe is provided, including the following steps:

[0035] The connecting disc 8 is placed between the flange plates 2 of the two groups of pipe bodies 1, so that the lead-in rings 16 on the two sides of the connecting disc 8 are respectively aligned with the limiting grooves 15 on the surfaces of the two flange plates 2.

[0036] The two pipe bodies 1 are pushed close to each other, in this process, the two pipe bodies 1 are respectively inserted into the two pipe bodies 1; at the same time, the assembling ring 4 is inserted into the embedding groove 3 on the surface of the flange plate 2, at this time, the sealing gasket 7 is squeezed between the assembling ring 4 and the embedding groove 3, realizing preliminary sealing; the lead-in ring 16 and the rubber ring II 17 are squeezed into the limiting groove 15, realizing the pre-limiting of the connecting disc 8 installed between the two flange plates 2.

[0037] With the two pipe bodies 1 approaching, the bolt holes 10 on the surface of the flange plates 2 are sleeved on the corresponding screw rods 11 on the connecting plate 8, so as to simultaneously introduce the screw rods 11 on the surface of the flange plates 2.

[0038] The nut 12 is sleeved on the end of the screw rod 11, and the nut 12 is screwed on the screw rod 11 and locked by rotating the nut 12. During the locking process, the nut 12 clamps the rubber ring I 14, the rubber ring I 14 rebounds to support the nut 12, and the nut 12 and the screw rod 11 are tightly engaged. At this time, the connecting plate 8 is tightly clamped between the two flange plates 2, realizing the sealing of the two groups of pipe bodies 1 after being connected.

[0039] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A double-sided enamel-lined insert tube, comprising a tube body (1), both ends of which are fixed with flanges (2), and the surface of the flanges (2) is provided with a plurality of bolt holes (10), characterized in that: A connecting plate (8) is provided in the two flanges (2) between the two sets of pipe bodies (1). The two sides of the connecting plate (8) are integrally formed with an assembly ring (4). The assembly ring (4) is inserted into the surface of the flange (2). The side of the assembly ring (4) away from the connecting plate (8) is integrally formed with a tube (5). The tube (5) is inserted into the pipe body (1). A screw (11) is inserted and fixed on the surface of the connecting plate (8). The two ends of the screw (11) pass through the flanges (2) on both sides respectively. A nut (12) is screwed onto the end of the screw (11).

2. The double-sided enamel insert tube according to claim 1, characterized in that: The flange (2) has an insert groove (3) on the side away from the pipe body (1) at the inner ring opening. The insert groove (3) is an annular groove. The assembly ring (4) is inserted into the insert groove (3). The surface of the assembly ring (4) has a reserved groove (6). The reserved groove (6) is an annular groove. A sealing gasket (7) is fixed inside the reserved groove (6). The thickness of the sealing gasket (7) is greater than the depth of the reserved groove (6).

3. A double-sided enamel insert tube according to claim 2, characterized in that: The outer ring diameter of the connecting plate (8) is equal to the outer ring diameter of the flange (2), and the inner ring diameter of the connecting plate (8) is equal to the inner ring diameter of the insertion tube (5). Multiple through holes (9) are opened on the surface of the connecting plate (8). The screw (11) and the through holes (9) correspond one-to-one. The screw (11) is inserted and fixed in the through holes (9). The distance from both ends of the screw (11) to the connecting plate (8) is equal.

4. A double-sided enamel insert tube according to claim 3, characterized in that: Both ends of the screw (11) are provided with slots (13), which are annular grooves. A rubber ring (14) is fixed inside the slot (13), and the outer diameter of the rubber ring (14) is larger than the diameter of the bolt hole (10).

5. A double-sided enamel insert tube according to claim 4, characterized in that: A limiting groove (15) is formed on the surface of the flange (2) near the connecting plate (8). The limiting groove (15) is an annular groove with a round opening. An inlet ring (16) is inserted into the limiting groove (15). The inlet ring (16) is fixed on the surface of the connecting plate (8). A rubber ring (17) is fitted and fixed at one end of the inlet ring (16) inserted into the limiting groove (15). The rubber ring (17) is a circular ring with a round cross-section.

6. A manufacturing process for a double-sided enamel insert tube as described in claim 5, characterized in that: Includes the following steps: Place the connecting plate (8) between the flanges (2) of the two sets of pipe bodies (1), push the two pipe bodies (1) closer together, and insert the two inserts (5) on both sides of the connecting plate (8) into the two pipe bodies (1) respectively. Insert the assembly ring (4) into the mounting groove (3), and the two ends of the screw (11) pass through the bolt holes (10) on the surface of the two flanges (2). After the nut (12) is screwed onto the end of the screw (11) and locked, the connecting plate (8) is tightly clamped between the two flanges (2), so as to achieve the seal after the two sets of pipe bodies (1) are connected, and multiple sets of screws (11) are simultaneously inserted into the corresponding bolt holes (10).

7. The manufacturing process of a double-sided enamel-lined insert tube according to claim 6, characterized in that: An insert groove (3) is pre-made on the surface of the flange (2) for the insertion of the assembly ring (4) when the two sets of pipe bodies (1) are assembled. After a reserved groove (6) is made on the surface of the assembly ring (4), the sealing gasket (7) is fixed in the reserved groove (6) for sealing after the assembly ring (4) is inserted into the insert groove (3).

8. The manufacturing process of a double-sided enamel-lined insert tube according to claim 7, characterized in that: Multiple screws (11) are pre-fixed in the corresponding through holes (9). When the flanges (2) of the two sets of pipe bodies (1) are close together, the bolt holes (10) on the surface of the flange (2) are fitted onto the corresponding screws (11), so that multiple screws (11) can be introduced into the surface of the flange (2) at the same time. Then, the nuts (12) are screwed onto the corresponding screws (11) and locked.

9. The manufacturing process of a double-sided enamel-lined insert tube according to claim 8, characterized in that: A groove (13) is pre-made on the surface of the screw (11), and the rubber ring (14) is fitted and fixed in the groove (13). When the nut (12) is screwed into the screw (11) and locked, the nut (12) clamps the rubber ring (14), and the rubber ring (14) rebounds and supports the nut (12). The screw joint of the nut (12) and the screw (11) can be tightly engaged.

10. The manufacturing process of a double-sided enamel-lined insert tube according to claim 9, characterized in that: A limiting groove (15) is pre-made on the surface of the flange (2), and an inlet ring (16) is welded on both sides of the connecting plate (8). A fixing rubber ring (17) is fitted on one end of the inlet ring (16). After the connecting plate (8) is clamped between the two flanges (2), the inlet ring (16) and the rubber ring (17) are squeezed into the limiting groove (15) to achieve pre-limiting when the connecting plate (8) is installed between the two flanges (2).

Images