Flange plate structure

Abstract

The utility model relates to a flange plate structure which comprises a pipeline and a connecting plate arranged at one end of the pipeline, a plurality of bolt holes distributed in the circumferential direction are formed in the connecting plate, a shielding ring is arranged on the outer circumferential face of the connecting plate, the shielding ring extends in the circumferential direction of the connecting plate, and the shielding ring is of an elastic structure. A blocking ring is arranged on the peripheral face of the pipeline, the blocking ring is of a rigid structure, the blocking ring extends in the circumferential direction of the pipeline, the blocking ring blocks the blocking ring to reset when the blocking ring is bent to the radial outer end and located between the blocking ring and the connecting disc, and the blocking ring is of a rubber structure. The first purpose of the utility model is to provide the flange plate structure which is convenient to clean at the flange plate joint and is not easy to damage the bolt and the nut, and the problem that the flange plate bolt and the nut are exposed and are not easy to clean is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline connection technical field especially, relate to a flange structure. BACKGROUND

[0002] In the connecting process of metal pipeline, usually connect flange connection. The connecting flange is connected through a plurality of connecting bolts and connecting nuts. When disassembling and connecting again, a plurality of connecting bolts and nuts need to be disassembled, which causes time-consuming in disassembling and connecting again. The connecting bolt and the connecting nut are exposed, which causes poor flatness of the connecting part, inconvenient cleaning, and easy rust and damage of the nut. CONTENT OF THE UTILITY MODEL

[0003] The first purpose of the utility model aims at providing a flange structure which is convenient to clean and the bolt and nut are not easy to damage, and solves the problem that the bolt and nut of the flange are exposed and not easy to clean.

[0004] The second purpose of the utility model aims at further providing a flange structure which is convenient to disassemble and connect again, and solves the problem that the existing flange needs to be screwed with a plurality of bolts and nuts in disassembling and installing.

[0005] The following technical problem is solved by the following technical scheme: a flange structure, comprising a pipeline and a connecting disc arranged on one end of the pipeline, a plurality of bolt holes are arranged on the connecting disc in the circumferential direction, characterized in that a shielding ring is arranged on the outer circumferential surface of the connecting disc, the shielding ring extends along the circumferential direction of the connecting disc, the shielding ring is a flexible structure, a blocking ring is arranged on the outer circumferential surface of the pipeline, the blocking ring is a rigid structure, the blocking ring extends along the circumferential direction of the pipeline, when the shielding ring is bent to the radial outer end between the blocking ring and the connecting disc, the blocking ring blocks the resetting of the shielding ring, and the shielding ring is a rubber structure. In use, the connecting discs of two utility models are butted together and the threaded holes are aligned, then the connecting bolt is simultaneously threaded through the bolt holes of the two utility models and is screwed with the connecting nut to be connected together, so that the connecting discs of the two utility models are sealed and abutted together (usually a sealing ring is arranged between the two connecting discs to improve the sealing performance), after connection, the shielding rings on the two connecting discs are bent to the radial outer end of the shielding ring between the blocking ring and the connecting disc in the direction of the respective pipelines, at this time, the shielding ring, the connecting disc and the pipeline maintain an annular cavity under the blocking action of the blocking ring, so that the head of the connecting bolt is located in the annular cavity of one utility model, and the threaded end of the connecting bolt and the connecting nut are located in the annular cavity of the other utility model.

[0006] As preferred, the pipeline comprises a main pipe section and a connecting section, one end of the main pipe section is provided with an external thread section, one end of the connecting section is fixedly connected with the connecting disc and the other end is provided with an internal thread section, the external thread section and the internal thread section are threadedly connected together, a sealing layer is arranged between the external thread of the external thread section and the internal thread of the internal thread section away from the connecting section and the main pipe section, and the sealing layer seals and connects the internal thread section and the external thread section together. When the two utility models are fixed together, the external thread of the external thread section and the internal thread of the internal thread section produce extrusion effect to extrude the sealing layer, thereby effectively avoiding leakage between the main pipe section and the connecting section. When the two utility models are to be disassembled again, the connecting disc is rotated to move the connecting sections of the two utility models towards the same direction, thereby the whole is taken off from one main pipe section and connected to another main pipe section to realize disassembly, and when the two utility models are installed, the whole is rotated by two connecting discs to make the disconnected connecting sections threadedly connected to the disconnected main pipe section, thereby facilitating disassembly and reinstallation of the two utility models. The second application purpose is realized.

[0007] As preferred, the sealing layer is fixedly connected to the side of the external thread of the external thread section away from the connecting section, and the sealing layer only abuts against the side of the internal thread of the internal thread section away from the main pipe section. The sealing layer is convenient to manufacture.

[0008] As preferred, the sealing layer is of rubber structure. The sealing effect is good.

[0009] As preferred, the sealing layer is vulcanized together with the side of the external thread of the external thread section away from the connecting section. The fixation is reliable.

[0010] As preferred, the sealing layer is of rubber structure.

[0011] As preferred, the connecting disc is provided with an annular sealing ring mounting groove on the end face away from the pipeline, and the annular sealing ring mounting groove extends along the circumference of the connecting disc. The sealing ring mounting groove is convenient to position and seal the sealing ring of the two utility models.

[0012] As preferred, the annular sealing ring mounting groove penetrates to the inner circumferential face of the connecting disc. The sealing ring can be used universally.

[0013] As preferred, a sealing ring is arranged in the annular sealing ring mounting groove, the thickness of the sealing ring is greater than twice the depth of the annular sealing ring mounting groove, and the outer diameter of the sealing ring is equal to the outer diameter of the annular sealing ring mounting groove. When the sealing ring seals the two utility models, the sealing ring can simultaneously seal and abut against the bottom wall, the outer side wall of the annular sealing ring mounting groove and the end face of the connecting disc, thereby the sealing effect is better.

[0014] As preferred, the loosening-preventing washer, the connecting bolt and the connecting nut are further included, the connecting disc part locking recess is arranged on the end face of the connecting disc towards the pipe section, the nut part locking recess is arranged on the outer periphery of the end face of the connecting nut, the loosening-preventing washer comprises a circular ring body and a plurality of locking teeth distributed along the circumferential direction of the circular ring body and arranged on the outer periphery of the circular ring body, and the locking teeth are of a bendable structure. When two utility models are connected together, the connecting bolt is firstly arranged on the loosening-preventing washer and then threadedly connected with the connecting nut after penetrating through the bolt holes of the two utility models, one locking tooth of the loosening-preventing washer is bent and arranged in the connecting disc part locking recess, then the connecting nut is locked and the nut part locking recess is aligned with one of the locking teeth which is not arranged in the connecting disc part locking recess, and the locking tooth aligned with the nut part locking recess is bent and arranged in the nut part locking recess. The connecting bolt and the connecting nut are less likely to be loosened (when loosened, only the connecting bolt can be rotated, and friction phenomenon will occur between the connecting bolt and the bolt hole, so that the connecting bolt is less likely to be loosened than the connecting nut), and when the connecting bolt and the connecting nut are disassembled, the connecting bolt is rotated to achieve the disassembly, and the connecting nut does not need to be fixed at the same time. The existing utility model needs to fix one of the connecting bolt and the connecting nut and then rotate the other one to complete the disassembly (otherwise, the two will be rotated together and cannot be disassembled).

[0015] The utility model has the advantages that the bolt and the nut can be protected to improve the flatness of the connection, the bolt and the nut are not easy to be damaged when the connection is cleaned, and the disassembly and reconnection are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a use state schematic view of the utility model embodiment one;

[0017] Figure 2 is Figure 1 is a local enlarged schematic view of A of the utility model embodiment two;

[0018] Figure 3 is a schematic view of the loosening-preventing washer;

[0019] Figure 4 is a use state schematic view of the utility model embodiment two;

[0020] Figure 5 is Figure 4 is a local enlarged schematic view of B of the utility model embodiment two.

[0021] In the figure: pipeline 1, connecting disc 2, bolt hole 3, shielding ring 4, blocking ring 5, annular sealing ring installation groove 6, sealing ring 7, lock washer 8, connecting bolt 9, connecting nut 10, connecting disc part locking pit 11, nut part locking pit 12, circular ring body 13, locking tooth 14, annular cavity 15, head of connecting bolt 16, main pipe section 17, connecting section 18, outer threaded section 19, inner threaded section 20, sealing layer 21, outer thread of outer threaded section 22, inner thread of inner threaded section 23, locking tooth 24 passing through the connecting disc part locking pit, locking tooth 25 aligned with the nut part locking pit. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Embodiment one, see Figures 1 to 3 A flange structure, comprising a pipeline 1 and a connecting disc 2 arranged on one end of the pipeline. The connecting disc is provided with a plurality of bolt holes 3 distributed in the circumferential direction. The outer circumferential surface of the connecting disc is provided with a shielding ring 4. The shielding ring extends along the circumferential direction of the connecting disc, and the shielding ring is of an elastic structure. The outer circumferential surface of the pipeline is provided with a blocking ring 5. The blocking ring is of a rigid structure. The blocking ring extends along the circumferential direction of the pipeline. When the shielding ring is bent to the radial outer end between the blocking ring and the connecting disc, the blocking ring blocks the resetting of the shielding ring. The shielding ring is of a rubber structure. The end surface of the connecting disc away from one end of the pipeline is provided with an annular sealing ring installation groove 6, and the annular sealing ring installation groove extends along the circumferential direction of the connecting disc. The annular sealing ring installation groove penetrates to the inner circumferential surface of the connecting disc. A sealing ring 7 is arranged in the annular sealing ring installation groove, the thickness of the sealing ring is greater than twice the depth of the annular sealing ring installation groove, and the outer diameter of the sealing ring is equal to the outer diameter of the annular sealing ring installation groove. Further comprising a lock washer 8, a connecting bolt 9 and a connecting nut 10, and the end surface of the connecting disc towards one section of the pipeline is provided with a connecting disc part locking pit 11. The outer circumferential edge of the end surface of the connecting nut is provided with a nut part locking pit 12. The lock washer comprises a circular ring body 13 and a plurality of locking teeth 14 arranged on the outer circumferential surface of the circular ring body and distributed along the circumferential direction of the circular ring body. The locking tooth is of a bendable structure.

[0024] When the two utility models are connected together, the connecting plates of the two utility models are butted together and the threaded holes are aligned, the connecting bolt is threaded through the bolt holes of the two utility models and then is screwed with the connecting nut, one of the locking teeth on the lock washer is bent and threaded into the locking recess of the connecting plate part, then the connecting nut is locked and the nut locking recess is aligned with one of the locking teeth 24 that is not threaded into the locking recess of the connecting plate part, and the locking tooth 25 aligned with the nut locking recess is bent and threaded into the nut locking recess. The sealing ring seals and connects the two utility models together. After being connected, the shielding ring on the connecting plate is bent towards the direction of the pipeline and is located between the blocking ring and the connecting plate, at this time, the shielding ring, the connecting plate and the pipeline maintain a ring-shaped cavity 15 under the blocking action of the blocking ring, so that the head 16 of the connecting bolt is located in the ring-shaped cavity of one utility model, and the threaded end of the connecting bolt and the connecting nut are located in the ring-shaped cavity of the other utility model.

[0025] Example two, different from example one is:

[0026] Referring to Figure 4 and Figure 5 , the pipeline comprises a main pipe section 17 and a connecting section 18. One end of the main pipe section is provided with an external threaded section 19, one end of the connecting section is fixedly connected with the connecting plate, and the other end is provided with an internal threaded section 20. The external threaded section and the internal threaded section are screwed together. A sealing layer 21 is arranged between the external thread 22 of the external threaded section away from the connecting section and the internal thread 23 of the internal threaded section away from the main pipe section, and the sealing layer seals and connects the internal threaded section and the external threaded section together. The sealing layer is fixedly connected to the side of the external thread of the external threaded section away from the connecting section, and the sealing layer is only in abutment with the side of the internal thread of the internal threaded section away from the main pipe section. The sealing layer is of rubber structure. The sealing layer is vulcanized together with the side of the external thread of the external threaded section away from the connecting section.

[0027] After the two utility models are fastened together, the external thread of the external threaded section and the internal thread of the internal threaded section produce a squeezing action to squeeze the sealing layer, thereby effectively preventing leakage between the main pipe section and the connecting section. When the two utility models are to be disassembled again, the connecting plate is rotated to move the connecting sections of the two utility models towards the same direction, so that the whole is removed from one main pipe section and is connected to another main pipe section to realize disassembly. When installed, the whole is rotated by two connecting plates so that the disconnected connecting section is newly screwed to the disconnected main pipe section.

[0028] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0029] While the embodiments of the present application have been shown and described with respect to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. Therefore, the scope of the application should not be limited by the embodiments, but should be defined only in accordance with the following claims and their equivalents.

Claims

1. A flange structure comprising a pipe and a connecting plate provided on one end of the pipe, the connecting plate being provided with bolt holes distributed in the circumferential direction, characterized in that, The outer circumferential surface of the connecting disc is provided with a shielding ring, the shielding ring extends along the circumference of the connecting disc, the shielding ring is of elastic structure, the outer circumferential surface of the pipeline is provided with a blocking ring, the blocking ring is of rigid structure, the blocking ring extends along the circumference of the pipeline, the shielding ring is bent to the radial outer end between the blocking ring and the connecting disc, and the blocking ring blocks the resetting of the shielding ring, and the shielding ring is of rubber structure.

2. A flange plate structure according to claim 1, wherein The pipeline comprises a main pipe section and a connecting section, one end of the main pipe section is provided with an external thread section, one end of the connecting section is fixedly connected with the connecting disc, and the other end is provided with an internal thread section, the external thread section and the internal bolt section are threadedly connected together, a sealing layer is arranged between the side of the external thread of the external thread section away from the connecting section and the side of the internal thread of the internal thread section away from the main pipe section, and the sealing layer seals and connects the internal thread section and the external thread section together.

3. A flange plate structure according to claim 2, wherein The sealing layer is fixedly connected to the side of the external thread of the external thread section away from the connecting section, and the sealing layer only abuts together with the side of the internal thread of the internal thread section away from the main pipe section.

4. A flange plate structure according to claim 3, wherein The sealing layer is of rubber structure.

5. A flange plate structure according to claim 4, wherein The sealing layer is vulcanized together with the side of the external thread of the external thread section away from the connecting section.

6. A flange plate structure according to claim 2, wherein The sealing layer is of rubber structure.

7. A flange plate structure according to claim 2 or 3 or 4 or 5 or 6, characterized in that An annular sealing ring mounting groove is arranged on the end face of the connecting disc away from one end of the pipeline, and the annular sealing ring mounting groove extends along the circumference of the connecting disc.

8. A flange plate structure according to claim 7, wherein The annular sealing ring mounting groove penetrates to the inner circumferential surface of the connecting disc.

9. A flange plate structure according to claim 7, wherein A sealing ring is arranged in the annular sealing ring mounting groove, the thickness of the sealing ring is greater than twice the depth of the annular sealing ring mounting groove, and the outer diameter of the sealing ring is equal to the outer diameter of the annular sealing ring mounting groove.

10. A flange plate structure according to claim 2 or 3 or 4 or 5 or 6, characterized in that Further comprising a loose preventing washer, a connecting bolt and a connecting nut, the end face of the connecting disc towards the pipeline section is provided with a connecting disc part locking pit, the outer periphery of the end face of the connecting nut is provided with a nut part locking pit, the loose preventing washer comprises a circular ring body and a plurality of locking teeth distributed along the circumference of the circular ring body on the outer circumferential surface of the circular ring body, and the locking teeth are of bendable structure.

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