A connection joint structure of a pipe conveying apparatus

Abstract

The utility model provides a kind of connecting joint structure of pipeline conveying equipment, including two coaxial butt joint pipe body, the connecting end of two described pipe body is equipped with connecting part;The pipe body inner wall is coated with ceramic lining, and the end portion of the ceramic lining extends axially and exceeds connecting part to form annular lining flanging;Flexible connecting body is arranged between two connecting parts, and the flexible connecting body is composed of coaxially nested rigid outer ring and flexible inner ring;The lining flanging extrudes flexible inner ring to make it plastically deformed, and the deformed flexible inner ring is coated on the outer surface of lining flanging to form continuous sealing interface;Fixed structure is provided on the connecting part, for locking the assembly position of flexible connecting body and connecting part. After gas and material are introduced, the exposed point is directly washed by the soft connection joint, which causes metal wear problem.

Description

Technical Field

[0001] This utility model relates to the field of pipeline transportation equipment, and specifically to a connection joint structure for pipeline transportation equipment. Background Technology

[0002] Cathode materials are a crucial component in lithium-ion battery manufacturing, and their production process is complex, involving numerous pieces of equipment. Transportation is a critical step in the production process, and pipeline transportation equipment can meet the necessary technological requirements. However, in the current production process, the existing pipeline transportation and flexible connection joints use stainless steel pipes lined with ceramic or other materials, failing to achieve a complete stainless steel enclosure. This results in exposed stainless steel edges, creating steps or uneven surfaces. When gas and materials are introduced, they directly erode these exposed points through the flexible connection joints, leading to metal abrasion. The metal that falls off during this abrasion mixes into the product, causing issues such as failing to meet product specifications, inability to meet specifications, poor stability, and significant losses to the production process. Summary of the Invention

[0003] The problem this utility model aims to solve is to provide a connection joint structure for pipeline conveying equipment, which addresses the issue of metal wear caused by gas and materials directly eroding the exposed point after passing through the flexible connection joint.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: a connection joint structure for a pipeline conveying equipment, comprising two coaxially connected pipes, each pipe having a connecting portion at its connecting end; the inner wall of the pipe is covered with a ceramic liner, the end of which extends axially beyond the connecting portion to form an annular inner liner flange; a flexible connector is provided between the two connecting portions, the flexible connector being composed of a coaxially nested rigid outer ring and a flexible inner ring; the inner liner flange compresses the flexible inner ring to cause it to undergo plastic deformation, and the deformed flexible inner ring covers the outer surface of the inner liner flange to form a continuous sealing interface; a fixing structure is provided on the connecting portion for locking the assembly position of the flexible connector and the connecting portion.

[0005] By installing a ceramic liner on the inner wall of the pipe and extending the end of the ceramic liner axially beyond the connecting part to form an annular inner liner flange, the inner liner flange compresses the flexible inner ring in the flexible connector, causing it to undergo plastic deformation and cover the outer surface of the inner liner flange to form a continuous sealing interface. This solves the problem of metal wear caused by gas and material directly scouring the exposed point after passing through the flexible connector. At the same time, the fixing structure set on the connecting part locks the assembly position of the flexible connector and the connecting part, further ensuring the stability of the sealing interface and preventing the flexible connector from shifting and causing metal wear.

[0006] Furthermore, the inner surface of the inner liner flange is a tapered outward-expanding surface that extends axially outward and whose inner diameter continuously increases. This outward-expanding surface forces the inner edge of the flexible inner ring to undergo radial deformation and completely fit against the outward-expanding surface. This structure, through the special shape design of the tapered outward-expanding surface, can apply radial pressure to the inner edge of the flexible inner ring during assembly, causing it to deform and fit tightly against the outward-expanding surface. This not only enhances the sealing effect but also effectively disperses the scouring force of gas and materials, preventing direct impact and wear on the metal parts.

[0007] Furthermore, both the flexible inner ring and the rigid outer ring are annular components, and the flexible inner ring is fixed to the inner wall of the rigid outer ring through a vulcanization bonding process. This structure, using a vulcanization bonding process, firmly fixes the flexible inner ring to the inner wall of the rigid outer ring, forming a stable whole. This ensures that during pipeline transportation, the flexible inner ring will not separate from the rigid outer ring due to factors such as material flow and pressure changes, thus guaranteeing the structural stability and sealing reliability of the connection joint.

[0008] Furthermore, the connecting portion includes: An annular flange extending radially outward from the outer wall of the tube; A cylindrical annular sidewall extending axially outward from the outer edge of the flange; The two ends of the rigid outer ring are respectively inserted into the corresponding annular sidewalls, and their end faces abut and limit the inner end face of the flange.

[0009] Furthermore, the fixing structure includes two sets of symmetrically arranged clamp assemblies, each set of clamp assemblies being formed by two semi-annular clamp sleeves engaging. The clamping sleeve, after mating, forms a clamping interface that matches the outer contour of the annular sidewall. Radial clamping force is applied via locking bolts, forcing the annular sidewall to elastically deform and press against the rigid outer ring. The annular flange and cylindrical annular sidewall of this connection constitute a precise positioning and limiting structure. The two ends of the rigid outer ring are inserted into the annular sidewall and abut against the inner end face of the flange, achieving precise installation and reliable limiting of the rigid outer ring within the connection, ensuring the accuracy and stability of the connection between the flexible connector and the pipe body.

[0010] Furthermore, the flexible inner ring is made of corrosion-resistant fluororubber or hydrogenated nitrile rubber. These two materials possess excellent corrosion resistance, effectively resisting corrosive substances that may be present in the transported medium, extending the service life of the flexible inner ring. Simultaneously, their good flexibility and elasticity allow them to maintain good sealing performance even after being compressed and deformed, adapting to the pipeline transport requirements under different working conditions.

[0011] Furthermore, the rigid outer ring is made of stainless steel or chrome-plated carbon steel, and its axial length is less than that of the flexible inner ring. Stainless steel or chrome-plated carbon steel has high strength and wear resistance, providing reliable support and protection for the flexible inner ring and preventing damage from external forces during use. The axial length of the rigid outer ring is less than that of the flexible inner ring, allowing the flexible inner ring to better fit with the inner liner flange and fully deform under compression, forming a tighter sealing interface and improving the sealing effect of the joint. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 for Figure 2 A magnified view of the circled area.

[0013] Diagram: 1. Pipe body; 2. Connecting part; 2.1. Annular flange; 2.2. Annular sidewall; 3. Ceramic lining; 3.1. Lining flange; 3.1.1. Conical outer expansion surface; 4. Flexible connector; 4.1. Rigid outer ring; 4.2. Flexible inner ring; 5. Clamp assembly; 5.1. Clamp sleeve; 5.2. Clamping interface; 5.3. Locking bolt. Detailed Implementation

[0014] Before describing any embodiment of this invention in detail, it should be understood that the invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention is capable of other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof herein is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0015] Furthermore, firstly, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation on this utility model. Secondly, the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0016] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

[0017] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0018] Please see Figures 1 to 3 The connection joint structure of this pipeline conveying equipment mainly consists of two coaxially connected pipe bodies 1. Each pipe body 1 has a connection part 2 at its connection end. The connection part 2 includes an annular flange 2.1 extending radially outward from the outer wall of the pipe body 1, and a cylindrical annular sidewall 2.2 extending axially outward from the outer edge of the flange. The inner wall of the tube body 1 is covered with a ceramic liner 3, the end of which extends axially beyond the connecting part 2, forming an annular liner flange 3.1. The inner surface of the liner flange 3.1 is a tapered outward-expanding surface 3.1.1 that extends axially outward and has a continuously increasing inner diameter. The flexible connector 4 between the two connecting parts 2 consists of a coaxially nested rigid outer ring 4.1 and a flexible inner ring 4.2. Both the flexible inner ring 4.2 and the rigid outer ring 4.1 are annular components, and the flexible inner ring 4.2 is fixed to the inner wall of the rigid outer ring 4.1 by a vulcanization bonding process. The rigid outer ring 4.1 is made of stainless steel or chrome-plated carbon steel, and its axial length is less than that of the flexible inner ring 4.2; the flexible inner ring 4.2 is made of corrosion-resistant fluororubber or hydrogenated nitrile rubber. During installation, the two ends of the rigid outer ring 4.1 are inserted into the corresponding annular sidewalls 2.2, with their end faces abutting and limiting the movement against the inner end faces of the flange. Subsequently, through a pressing operation, the inner liner flange 3.1 presses the flexible inner ring 4.2, causing it to undergo plastic deformation. The inner edge of the flexible inner ring 4.2 undergoes radial deformation under the pressure of the conical outer expansion surface 3.1.1, and completely fits against the outer expansion surface. The deformed flexible inner ring 4.2 finally covers the outer surface of the inner liner flange 3.1, forming a continuous sealing interface. A fixing structure is provided to lock the assembly position of the flexible connector 4 and the connecting part 2. This fixing structure includes two sets of symmetrically arranged clamping assemblies 5, each set consisting of two semi-annular clamping sleeves 5.1 engaged. The engaged clamping sleeves 5.1 form a clamping interface 5.2 that matches the outer contour of the annular sidewall 2.2. A radial clamping force is applied by the locking bolts 5.3, forcing the annular sidewall 2.2 to undergo elastic deformation and press against the rigid outer ring 4.1, thereby achieving a stable connection. Action principle During the operation of the pipeline transportation equipment, when the internal medium generates pressure, the pressure is evenly applied to the ceramic lining 3 on the inner wall of the pipe body 1. Due to the excellent wear resistance and pressure resistance of the ceramic lining 3, it can effectively disperse the pressure, preventing the pipe body 1 from being directly deformed by force. When the pressure is transmitted to the lining flange 3.1, the flexible inner ring 4.2 further tightens against the lining flange 3.1 under pressure, enhancing the sealing effect and preventing medium leakage. Simultaneously, the rigid outer ring 4.1 provides support for the flexible inner ring 4.2, ensuring its stable shape under pressure and guaranteeing the reliability of the sealing interface. Meanwhile, the clamp assembly 5 in the fixed structure continuously applies radial clamping force under the vibration or external force generated during equipment operation, ensuring that the annular sidewall 2.2 and the rigid outer ring 4.1 remain in close contact, preventing displacement or loosening of the flexible connector 4, thereby achieving stable operation and efficient sealing of the pipeline connection joint under complex working conditions.

[0019] The above description only illustrates the preferred embodiment of this utility model and should not be construed as limiting the scope of the claims. This utility model is not limited to the above embodiments, and variations in its specific structure are permitted. All changes made within the scope of the independent claims of this utility model are also within the scope of protection of this utility model.

Claims

1. A connection joint structure for a pipeline conveying device, comprising two coaxially mating pipe bodies (1), characterized in that: Both of the tube bodies (1) are provided with connecting parts (2) at their connecting ends; The inner wall of the tube (1) is covered with a ceramic liner (3), and the end of the ceramic liner (3) extends axially and extends beyond the connecting part (2) to form an annular liner flange (3.1); A flexible connector (4) is provided between the two connecting parts (2), and the flexible connector (4) is composed of a coaxially nested rigid outer ring (4.1) and a flexible inner ring (4.2); The inner lining flange (3.1) extrudes the flexible inner ring (4.2) to cause it to undergo plastic deformation, and the deformed flexible inner ring (4.2) covers the outer surface of the inner lining flange (3.1) to form a continuous sealing interface; The connecting part (2) is provided with a fixing structure for locking the assembly position of the flexible connector (4) and the connecting part (2).

2. The connection joint structure according to claim 1, characterized in that: The inner side of the inner lining flange (3.1) is a tapered outward expansion surface (3.1.1) that extends axially outward and has a continuously expanding inner diameter. The outward expansion surface forces the inner edge of the flexible inner ring (4.2) to undergo radial deformation and completely fits the outward expansion surface.

3. The connection joint structure according to claim 2, characterized in that: Both the flexible inner ring (4.2) and the rigid outer ring (4.1) are annular components, and the flexible inner ring (4.2) is fixed to the inner wall of the rigid outer ring (4.1) by a vulcanization bonding process.

4. The connection joint structure according to claim 3, characterized in that: The connecting part (2) includes: An annular flange (2.1) extending radially outward from the outer wall of the tube body (1); A cylindrical annular sidewall extending axially outward from the outer edge of the flange (2.2); The two ends of the rigid outer ring (4.1) are respectively inserted into the corresponding annular sidewall (2.2), and their end faces abut and limit the inner end face of the flange.

5. The connection joint structure according to claim 4, characterized in that: The fixing structure includes two sets of symmetrically arranged clamp assemblies (5), each set of clamp assemblies (5) is composed of two semi-annular clamp sleeves (5.1) joined together; The clamp sleeve (5.1) after mating forms a clamping interface (5.2) that matches the outer contour of the annular sidewall (2.2), and a radial clamping force is applied by the locking bolt (5.3), which forces the annular sidewall (2.2) to undergo elastic deformation and press the hard outer ring (4.1).

6. The connection joint structure according to any one of claims 1-5, characterized in that: The flexible inner ring (4.2) is made of corrosion-resistant fluororubber or hydrogenated nitrile rubber.

7. The connection joint structure according to any one of claims 1-5, characterized in that: The hard outer ring (4.1) is made of stainless steel or chrome-plated carbon steel, and its axial length is less than that of the flexible inner ring (4.2).

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