Pipeline expansion compensation device and mixing system

Abstract

The utility model discloses a pipeline expansion compensation device and a mixing system. The pipeline expansion compensation device comprises a first material conveying pipe, a second material conveying pipe and a sealing component. The first conveying pipe is provided with a first conveying channel, and supporting protrusions are arranged on the inner side wall of the first conveying channel. The second material conveying pipe is slidably inserted into the first material conveying channel, a gap is formed between the second material conveying pipe and the first material conveying pipe, and the second material conveying pipe is provided with a second material conveying channel communicated with the first material conveying channel. The sealing component comprises an abutting piece and a sealing piece, one end of the abutting piece is fixedly connected with the end, close to the second conveying pipe, of the first conveying pipe, the other end of the abutting piece abuts against the sealing piece, the sealing piece is pressed between the sealing piece and the supporting protrusion, and the gap is sealed, so that the telescopic stroke of the first conveying pipe is increased, and the service life of the first conveying pipe is prolonged. The problem that the sealing piece axially deviates in the process that the second conveying pipe slides relative to the first conveying pipe is solved, and the reliability and stability of sealing connection of the first conveying pipe and the second conveying pipe are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of material conveying and transfer, and in particular to a pipeline expansion and contraction compensation device and a mixing system. Background Technology

[0002] In some material conveying and transfer operations within the lithium battery industry, flexible connections are typically used between different conveying pipes to compensate for gaps between them. However, existing conveying pipes are either unable to extend or have limited extension lengths, which increases the difficulty of alignment, assembly, and processing between the conveying pipes. Utility Model Content

[0003] In view of this, one objective of this utility model is to provide a pipeline expansion compensation device and a mixing system to solve the technical problem that the material conveying pipeline in the prior art cannot be extended or the expansion length is limited, thereby increasing the difficulty of alignment and assembly between material conveying pipes and the difficulty of processing.

[0004] In a first aspect, this utility model provides a pipeline expansion and contraction compensation device, including a first conveying pipe, a second conveying pipe, and a sealing component. The first conveying pipe has a first conveying channel, and a supporting protrusion is provided within the first conveying channel. The second conveying pipe is slidably inserted into the first conveying channel, forming a gap with the first conveying pipe, and has a second conveying channel communicating with the first conveying channel. The sealing component includes a pressing member and a sealing member. One end of the pressing member is fixedly connected to the end of the first conveying pipe near the second conveying pipe, and the other end of the pressing member presses against the sealing member. The sealing member is pressed between the sealing member and the supporting protrusion, sealing the gap.

[0005] In conjunction with the first aspect, in some implementations of the first aspect, the sealing element includes two guide rings and at least one sealing ring, each of the guide rings abutting against the outer side wall of the second feed pipe, and all the sealing rings are arranged sequentially along the axial direction of the first feed pipe and clamped between the two guide rings.

[0006] In conjunction with the first aspect, in some implementations of the first aspect, the guide ring is configured as a rigid structure, the sealing ring is configured as a corrosion-resistant and pressure-resistant disc, the rigid structure includes an MC nylon structure, and the corrosion-resistant and pressure-resistant disc includes a polytetrafluoroethylene self-lubricating disc.

[0007] In conjunction with the first aspect, in some implementations of the first aspect, the distance between the inner wall of the support protrusion facing the second conveying pipe and the central axis of the second conveying pipe is a first distance, and the distance between the inner wall of the seal facing the second conveying pipe and the central axis of the second conveying pipe is a second distance, wherein the first distance is less than or equal to the second distance.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, the end of the pressing member near the sealing member is inserted into the first conveying channel, the sealing member further includes a locking member, the pressing member is detachably fixed to the first conveying pipe by the locking member, and the locking member can adjust the depth of the pressing member inserted into the first conveying channel.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the sealing component further includes a limiting member fixedly connected to at least one of the pressing member and the first conveying tube, the limiting member being used to limit the maximum depth to which the second conveying tube is inserted into the first conveying tube, and to support the second conveying tube when the second conveying tube is inserted into the maximum depth of the first conveying tube.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the pipeline expansion compensation device further includes a driving component, which is mounted on the first conveying pipe, and the output end of the driving component is fixedly connected to the end of the second conveying pipe away from the first conveying pipe.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the driving component includes a driving member and a transmission member, the transmission member being fixedly connected to the output end of the driving member, and the pipe expansion compensation device further includes an adjusting member, the adjusting member including a fixing part and a connecting part, the fixing part being fixedly connected to the end of the second conveying pipe away from the first conveying pipe, and the connecting part being movably connected to the end of the transmission member opposite to the driving member along the axial direction of the first conveying pipe.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, a limiting groove is provided on the side of the connecting portion facing away from the fixing portion, the transmission member is at least partially inserted into the limiting groove, the dimension of the transmission member inserted into the limiting groove in the axial direction of the first conveying pipe is a first dimension, the dimension of the limiting groove in the axial direction of the first conveying pipe is a second dimension, the second dimension is greater than the first dimension and less than a preset dimension; and / or, the transmission member is provided with a connecting hole, the connecting portion is at least partially inserted into the connecting hole, the dimension of the connecting portion inserted into the connecting hole in the axial direction of the first conveying pipe is a third dimension, the dimension of the connecting hole in the axial direction of the first conveying pipe is a fourth dimension, the fourth dimension is greater than the third dimension and less than the preset dimension.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the driving components are configured as a plurality of driving components, which are spaced apart along the circumferential direction of the first conveying pipe.

[0014] Secondly, this utility model provides a mixing system, including a mixing device, a sealing valve, and a pipeline expansion compensation device as described above, wherein the sealing valve is disposed between the mixing device and the pipeline expansion compensation device.

[0015] The pipeline expansion compensation device and mixing system provided in this embodiment of the utility model, on the one hand, increase the expandable stroke of the first conveying pipe by slidably inserting the second conveying pipe into the first conveying channel provided by the first conveying pipe, making it convenient for users to quantify the expansion length of the first conveying pipe according to their needs, and reducing the difficulty of alignment and assembly and processing between the first and second conveying pipes; on the other hand, by pressing the sealing element between the sealing element and the support protrusion and sealing the gap between the first and second conveying pipes, the problem of axial displacement of the sealing element during the sliding of the second conveying pipe relative to the first conveying pipe is avoided, thereby improving the reliability and stability of the sealing connection between the sealing element and the first and second conveying pipes, preventing external air from entering the first and second conveying channels from the gap, and improving the conveying safety of the pipeline expansion compensation device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a schematic diagram of the mixing system provided in an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 Enlarged view of the sealing valve and pipeline expansion compensation device of the mixing system.

[0019] Figure 3 yes Figure 2 Enlarged view of the pipeline expansion compensation device.

[0020] Figure 4 yes Figure 3 Exploded view of the pipeline expansion joint compensation device.

[0021] Figure 5 yes Figure 3 A cross-sectional view of the pipeline expansion compensation device along line II.

[0022] Figure 6 yes Figure 5 An enlarged view of part II of the pipeline expansion compensation device.

[0023] Key reference numerals in the attached drawings: Mixing system - 1000; Frame - 100; Mixing device - 200; Discharge port - 2101; First mixing bin - 210; Second mixing bin - 220; Sealing valve - 300; Inlet - 3101; Sealing gasket - 400; Pipe expansion compensation device - 500; First conveying pipe - 10; First conveying channel - 101; Gap - 102; Support protrusion - 11; First pipe body - 12; Flange seat - 14; Mounting seat - 15; Second conveying pipe - 20; Second conveying channel - 201; Second pipe body - 21; Support platform - 22; Sealing component - 30; Pressing component - 31; Pressing part -311; Extension -312; Seal -32; Guide ring -321; Sealing ring -322; Locking component -40; Locking screw -41; Locking nut -42; Limiting component -50; Limiting rod -51; Height adjusting body -52; Drive component -60; Connecting hole -601; Drive component -61; Transmission component -62; Adjusting component -70; Limiting groove -701; Fixing part -71; Connecting part -72; Axial direction -X; Radial direction -Y; Circumferential direction -Z; Second distance -D1; Second distance -D2; First dimension -H1; Second dimension -H2; Third dimension -H3; Fourth dimension -H4.

[0024] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] It is understood that the terminology in the specification, claims, and accompanying drawings of this utility model is for describing specific embodiments only and is not intended to limit the utility model. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Unless the context clearly states otherwise, the singular forms "a" and "described" are also intended to include the plural forms. The term "comprising," and any variations thereof, are intended to cover non-exclusive inclusion. Furthermore, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the disclosure of this utility model, wherein terms indicating direction such as up, down, left, and right refer only to the position of the illustrated structure in the corresponding drawings. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set on" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The following description describes preferred embodiments of the present invention; however, the foregoing description is intended to illustrate the general principles of the present invention and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined by the appended claims.

[0028] The basic concepts involved in the embodiments of this utility model are briefly introduced below.

[0029] The term "MC nylon (Monomer casting nylon)," also known as "cast nylon" or "monomer casting nylon," refers to an engineering plastic formed by reacting molten caprolactam monomer and catalyst into molds of various shapes under normal pressure using anionic polymerization technology.

[0030] The term "packing," also known as "sealing filler," refers to a structure made of a relatively soft, woven thread.

[0031] Please refer to the following: Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the mixing system 1000 provided in this embodiment of the utility model; Figure 2 yes Figure 1 Enlarged view of the sealing valve 300 and pipeline expansion compensation device 500 in the mixing system 1000. The mixing system 1000 includes a mixing device 200, a sealing valve 300, and a pipeline expansion compensation device 500. The sealing valve 300 is located between the mixing device 200 and the pipeline expansion compensation device 500. The sealing valve 300 is used to control the flow parameters of material in the first mixing bin 210 to the pipeline expansion compensation device 500. Specifically, the sealing valve 300 can be used to cut off the flow of material in the first mixing bin 210 to the pipeline expansion compensation device 500, and the sealing valve 300 can also be used to adjust the flow rate of material in the first mixing bin 210 to the pipeline expansion compensation device 500. Thus, on the one hand, the sealing valve 300 can accurately control the flow rate of material, improving the mixing effect of the mixing device 200; on the other hand, the pipeline expansion compensation device 500 can flexibly adjust the length of the conveying pipeline to adapt to the installation position of the mixing device 200, reducing the installation difficulty and installation yield.

[0032] The mixing device 200 is used to mix multiple materials into a homogeneous mixture. These materials include, but are not limited to, battery materials, food materials, pharmaceutical materials, fertilizer materials, and building materials; the materials contained in the mixing device 200 are not limited herein. For example, in this embodiment of the invention, the mixing device 200 is used to stir and mix battery materials. Battery materials include, but are not limited to, at least two of positive electrode materials, negative electrode materials, conductive agents, or dispersants. The product form of the material can be, but is not limited to, liquid, gas, powder, etc.

[0033] For example, in this embodiment, the mixing device 200 includes a first mixing chamber 210 and a second mixing chamber 220. The second mixing chamber 220 is connected to the first mixing chamber 210 via a sealing valve 300 and a pipe expansion compensation device 500, and is located downstream of the first mixing chamber 210. The first mixing chamber 210 and the second mixing chamber 220 can be used to mix the same material; or, they can also be used to mix different materials. This embodiment of the present invention does not specifically limit the scope of the invention.

[0034] The first mixing bin 210, the sealing valve 300, the pipeline expansion compensation device 500, and the second mixing bin 220 are arranged sequentially along the height of the mixing system 1000. This allows materials to flow smoothly from the first mixing bin 210 to the second mixing bin 220 under gravity, improving discharge efficiency and effectiveness. Specifically, the first mixing bin 210 has a discharge port 2101 at its bottom. The sealing valve 300 has an inlet 3101 connected to the discharge port 2101. The pipeline expansion compensation device 500 can flexibly adjust the length of the conveying pipeline to accommodate the installation position between the first mixing bin 210 and the second mixing bin 220, reducing installation difficulty and yield. It also bears and absorbs the pressure applied by the first mixing bin 210 and the sealing valve 300, thereby reducing damage to the second mixing bin 220.

[0035] In some embodiments, the mixing system 1000 further includes a frame 100, on which a first mixing chamber 210 is fixedly mounted. This allows the frame 100 to distribute the pressure on the first mixing chamber 210, thereby improving the reliability and stability of the connections between the various components of the mixing system 1000 and extending its service life. A second mixing chamber 220 may also be fixedly mounted on the frame 100.

[0036] In some embodiments, the mixing system 1000 further includes a sealing gasket 400. The sealing valve 300 and the pipeline expansion compensation device 500 are sealed together by the sealing gasket 400, thereby preventing material leakage and improving the safety of the mixing system 1000.

[0037] For example, in this embodiment, the sealing valve 300 is configured as a sealing ball valve. The core component of the sealing ball valve is the ball, which can rotate 90° around its axis by rotating the valve stem, thereby cutting off or connecting the medium in the pipeline. Thus, on the one hand, the sealing ball valve can quickly cut off or open, achieving precise control of the flow rate of the material in the first mixing bin 210, and the sealing ball valve also has good sealing performance; on the other hand, the sealing ball valve has low flow resistance, high pressure resistance, high temperature resistance, etc., which improves its adaptability to different materials and reduces maintenance costs. Of course, in some embodiments, the sealing valve 300 can also be configured as, but is not limited to, a butterfly valve or a plug valve.

[0038] It should be noted that, Figure 1 The purpose is merely to illustrate the arrangement of the mixing device 200, the sealing valve 300, and the pipeline expansion compensation device 500, and is not to make specific limitations on the connection positions, connection relationships, and specific structures of each component. Figure 1 This illustration of the mixing system 1000 is merely a structural representation of an embodiment of the present invention and does not constitute a specific limitation on the mixing system 1000. In other embodiments of the present invention, the mixing system 1000 may include a ratio of... Figure 1 The mixing system 1000 may include, but is not limited to, a stirring device, a weighing sensor, etc., more or fewer components, or combinations of certain components, or different components.

[0039] Please refer to the following: Figure 3 and Figure 4 , Figure 3 yes Figure 2 Enlarged view of the pipe expansion compensation device 500 in the image; Figure 4 yes Figure 3 An exploded view of a pipe expansion compensation device 500. The pipe expansion compensation device 500 includes a first conveying pipe 10, a second conveying pipe 20, and a sealing component 30. The first conveying pipe 10 is provided with a first conveying channel 101, and a support protrusion 11 is provided within the first conveying channel 101. The second conveying pipe 20 is slidably inserted into the first conveying channel 101, forming a gap 102 between the second and third pipes. The second conveying pipe 20 is provided with a second conveying channel 201 communicating with the first conveying channel 101. The sealing component 30 includes a pressing member 31 and a sealing member 32. One end of the pressing member 31 is fixedly connected to the end of the first conveying pipe 10 near the second conveying pipe 20, and the other end of the pressing member 31 presses against the sealing member 32. The sealing member 32 is pressed between the sealing member 32 and the support protrusion 11, sealing the gap 102.

[0040] The pipeline expansion compensation device 500 provided in this embodiment of the present invention, on the one hand, increases the expandable stroke of the first conveying pipe 10 by slidably inserting the second conveying pipe 20 into the first conveying channel 101 provided by the first conveying pipe 10, making it convenient for users to quantify the expansion length of the first conveying pipe 10 according to their needs, and reducing the difficulty of alignment and assembly and processing between the first conveying pipe 10 and the second conveying pipe 20; on the other hand, by pressing the sealing element 32 between the sealing element 32 and the support protrusion 11 and sealing the gap 102 between the first conveying pipe 10 and the second conveying pipe 20, the problem of axial displacement of the sealing element 32 during the sliding of the second conveying pipe 20 relative to the first conveying pipe 10 is avoided, thereby improving the reliability and stability of the sealing connection between the sealing element 32 and the first conveying pipe 10 and the second conveying pipe 20, preventing external air from entering the first conveying channel 101 and the second conveying channel 201 from the gap 102, and improving the conveying safety of the pipeline expansion compensation device 500.

[0041] For the sake of accuracy, all references to direction in this article should be expressed in terms of direction. Figure 3For reference, "axial direction X" refers to the direction parallel to the central axis of the first conveying pipe 10, which is the direction in which the second conveying pipe 20 slides relative to the first conveying pipe 10, with the X-axis extending vertically (the positive X-axis is upward). The term "radial direction Y" refers to the direction perpendicular to the central axis of the first conveying pipe 10, i.e., along the radius of the cross-section of the first conveying pipe 10, with the Y-axis extending horizontally (the positive Y-axis is to the right). The term "circumferential direction Z" refers to the circumferential direction of the first conveying pipe 10, i.e., the direction surrounding the central axis of the first conveying pipe 10, with the Z-axis extending vertically. The axial direction X, radial direction Y, and circumferential direction Z together constitute the three orthogonal directions of the first conveying pipe 10. The second conveying pipe 20 is coaxially arranged with the first conveying pipe 10. The axial direction X, radial direction Y, and circumferential direction Z of the first conveying pipe 10 can be customized according to the specific structure of the product and the perspective presented in the accompanying drawings; this utility model does not impose specific limitations. For ease of description, the directions such as up, down, left, and right in this utility model are relative positions and do not constitute a limitation on implementation.

[0042] For example, in this embodiment, the sealing element 32 includes two guide rings 321 and at least one sealing ring 322. Each guide ring 321 is attached to the outer side wall of the second feed pipe 20, and all the sealing rings 322 are arranged sequentially along the axial direction X of the first feed pipe 10 and clamped between the two guide rings 321. Therefore, on the one hand, the two guide rings 321 apply pressure to all the sealing rings 322, so that the sealing rings 322 are tightly fitted to the outer wall of the second conveying pipe 20, improving the sealing performance between the first conveying pipe 10 and the second conveying pipe 20. Furthermore, the sealing rings 322 are separated from the pressing member 31 and the supporting protrusion 11 by the two guide rings, thereby reducing mechanical wear of the sealing rings 322, preventing deformation or damage caused by local stress concentration, and extending the service life of the sealing rings 322. On the other hand, the two guide rings 321 can guide the second conveying pipe 20 to extend and retract in a preset direction, thereby reducing the swaying or jamming of the second conveying pipe 20 and improving the smoothness and stability of the movement. Of course, in some embodiments, the guide rings 321 can be omitted, that is, the sealing member 32 can only include the sealing rings 322, i.e., the sealing member 32 is configured as the sealing rings 322. One guide ring can be provided. All the sealing rings 322 are clamped between the guide rings 321 and the supporting protrusion.

[0043] The guide ring 321 is configured as a rigid structure. The sealing ring 322 is configured as a corrosion-resistant and pressure-resistant disc. Exemplarily, the rigid structure includes an MC nylon structure. The corrosion-resistant and pressure-resistant disc includes a PTFE self-lubricating disc. Thus, on the one hand, the guide ring 321 is configured as a rigid MC nylon structure, giving it good wear resistance and extending its service life; on the other hand, the sealing ring 322 is configured as a PTFE self-lubricating disc, preventing corrosion of the sealing ring 322 by materials and reducing the sealing performance between the first conveying pipe 10 and the second conveying pipe 20, and giving the sealing ring 322 good pressure resistance, extending the service life of the pipeline expansion compensation device 500. Of course, in some embodiments, the rigid structure may also include, but is not limited to, alloy structures, metal structures, or non-metal structures. Alloy materials include, but are not limited to, titanium alloys, nickel-based alloys, cobalt-based alloys, etc. Metal structures include, but are not limited to, stainless steel, wear-resistant steel (such as Hardox), etc. Corrosion-resistant and pressure-resistant discs may also include, but are not limited to, carbon fiber structures and aramid synthetic fiber structures.

[0044] Understandably, in the lithium battery manufacturing industry, lithium hexafluorophosphate powder is a highly toxic substance. When it comes into contact with water or absorbs moisture from the air, it emits white fumes and produces hydrofluoric acid. Hydrofluoric acid is highly corrosive, corroding metal structures such as stainless steel. Inhalation of hydrofluoric acid by workers can cause irreversible damage to their bodies. Therefore, during operation, the material is conveyed and processed under pressure in a dry nitrogen atmosphere to ensure that the material does not come into contact with air. This invention uses a corrosion-resistant and pressure-resistant disc to avoid corrosion between the material and the disc, thus improving the sealing performance between the first conveying pipe 10 and the second conveying pipe 20. The first mixing hopper 210 and the sealing valve 300 are relatively heavy. After the second conveying pipe 20 retracts into the first conveying pipe 10, the sealing element 32 needs to withstand the load applied above the first conveying pipe 10. Specifically, the pipeline expansion compensation device 500 provided in this embodiment of the present invention can withstand a pressure of approximately 1 MPa, while the load pressure of the first mixing chamber and the ball valve is approximately 40 kPa-50 kPa. Therefore, the sealing element 32 in this embodiment of the present invention has good pressure resistance, thereby preventing mechanical damage such as deformation of the sealing element 32, and thus improving the sealing performance and service life of the sealing element 32.

[0045] For example, in this embodiment, the number of sealing rings 322 is set to three, and the three sealing rings 322 are arranged sequentially along the axial direction X of the first feed pipe 10. The sealing rings 322 can be configured as open-loop structures, thereby facilitating the alignment and assembly of the sealing rings 322 with the first feed pipe 10. The opening positions of the multiple sealing rings 322 are staggered along the circumferential direction Z of the first feed pipe 10, thereby improving the sealing performance of the sealing element 32 between the first feed pipe 10 and the second feed pipe 20. Of course, in some embodiments, the opening positions of the multiple sealing rings 322 are aligned along the circumferential direction Z of the first feed pipe 10. The sealing rings 322 can also be configured as closed-loop structures, thereby improving the overall sealing performance of the sealing element 32.

[0046] It should be noted that the number of sealing rings 322 is for illustrative purposes only, and this embodiment of the present invention does not impose a specific limitation. The number of sealing rings 322 can also be one, two, four or more.

[0047] Please refer to the following: Figure 1 , Figure 3 , Figure 5 and Figure 6 , Figure 5 yes Figure 3 A sectional view of the pipeline expansion compensation device 500 along line II. Figure 6 yes Figure 5 This is an enlarged view of part II of the pipe expansion compensation device 500. Exemplarily, in this embodiment, the distance between the inner wall of the support protrusion 11 facing the second conveying pipe 20 and the central axis of the second conveying pipe 20 is a first distance, and the distance between the inner wall of the seal 32 facing the second conveying pipe 20 and the central axis of the second conveying pipe 20 is a second distance D2. The first distance is less than the second distance D2. In other words, the dimension of the gap 102 along the radial direction Y of the first conveying pipe 10 is greater than the extension length of the support protrusion 11 along the radial direction Y of the first conveying pipe 10. Therefore, by setting a difference in the dimensions of the support protrusion 11 and the guide ring 321 from the second conveying pipe 20, the problem of debris generation due to friction between the second conveying pipe 20 and the support protrusion inside the first conveying pipe 10 is avoided, thus improving the quality of the material. Of course, in some embodiments, the first distance may also be equal to the second distance D2. The difference between the first distance and the second distance D2 can be set according to factors such as the material and structural layout of the sealing ring 322. This embodiment of the invention does not impose specific limitations, as long as the sealing ring 322 can be stably confined between the support protrusion 11 and the pressing member 31. Of course, in some embodiments, a wear-resistant and corrosion-resistant coating can be provided on the end of the support protrusion 11 facing the second feed pipe 20.

[0048] Please refer to it again. Figures 3 to 5In some embodiments, the end of the pressing member 31 near the sealing member 32 is inserted into the first conveying channel 101. The sealing member 30 also includes a locking member 40. The pressing member 31 is detachably fixed to the first conveying pipe 10 via the locking member 40. The locking member 40 can adjust the depth to which the pressing member 31 is inserted into the first conveying channel 101. Thus, on the one hand, by setting the pressing member 31 to be detachably fixed to the first conveying pipe 10 via the locking member 40, it is convenient to disassemble, maintain, and replace the first pressing member 31 and the first conveying pipe 10; on the other hand, the locking member 40 can adjust the depth to which the pressing member 31 is inserted into the first conveying channel 101, thereby making the pipe expansion compensation device 500 suitable for sealing members 32 of different thicknesses, and ensuring that the sealing member 32 is tightly pressed between the support protrusion 11 and the pressing member 31 along the sliding direction of the second conveying pipe 20, thereby improving the sealing performance between the first conveying pipe 10 and the second conveying pipe 20.

[0049] Specifically, the pressing member 31 includes a pressing portion 311 and an extension portion 312. The extension portion 312 is bent and connected to one end of the pressing portion 311, and the other end of the pressing portion 311 can press against the sealing member 32. The first conveying pipe 10 includes a first pipe body 12 and a flange seat 14. The flange seat 14 is connected to the end of the first pipe body 12 facing the second conveying pipe 20. The extension portion 312 and the flange seat 14 are fixedly connected by a locking member 40, thereby realizing a fixed connection between the pressing member 31 and the first conveying pipe 10. Specifically, the locking member 40 includes a locking screw 41 and a locking nut 42. The locking screw 41 passes through the extension portion 312 and the flange seat 14 in sequence and is locked in place with the locking nut 42.

[0050] In some embodiments, the sealing member 30 further includes a limiting member 50. The limiting member 50 is fixedly connected to at least one of the pressing member 31 and the first conveying pipe 10. The limiting member 50 is used to limit the maximum depth to which the second conveying pipe 20 is inserted into the first conveying pipe 10, and to support the second conveying pipe 20 when it is inserted to the maximum depth. Thus, when the second conveying pipe 20 is inserted to the maximum depth in the first conveying pipe 10, the limiting member 50 abuts against the second conveying pipe 20, so that the pressure exerted on the second conveying pipe 20 by the sealing valve 300 and the first mixing chamber 210 above the second conveying pipe 20 can be transmitted to the sealing member 32 through the pressing member 31 and absorbed by the sealing member 32, thereby preventing mechanical damage to the first conveying pipe 10 and the second conveying pipe 20, and improving the reliability and stability of the sealed connection between the first conveying pipe 10 and the second conveying pipe 20.

[0051] The limiting member 50 includes a limiting rod 51 and a height adjusting body 52. ​​The height adjusting body 52 can adjust the protrusion height of the limiting rod 51 relative to the abutment member towards the side closer to the second feed pipe 20. In other words, the height adjusting body 52 can adjust the height of the limiting rod 51 between the abutment member 31 and the second feed pipe 20. Specifically, the height adjusting body 52 is configured as a lead screw nut, and the limiting rod 51 is provided with an external thread section that mates with the lead screw nut, that is, the limiting rod 51 is configured as a lead screw. Two height adjusting bodies 52 are provided, and the two height adjusting bodies 52 are used to fix the limiting rod 51 on the first feed pipe 10. Of course, in some embodiments, the two height adjusting bodies 52 are used to fix the limiting rod 51 on the abutment member. The height adjusting body 52 can also be configured as a height adjusting pin, and the limiting rod 51 is provided with a limiting hole that mates with the height adjusting pin. The structure of the limiting rod 51 and the height adjusting body 52 can be set according to the actual situation, and this utility model embodiment does not make specific limitations. In some other embodiments, the limiting member 50 may also be fixedly connected to the abutment member or the first feed tube 10 in a non-detachable manner.

[0052] The second feed pipe 20 includes a second pipe body 21 and a support platform 22. The support platform 22 is connected to the end of the second pipe body 21 away from the second feed pipe 20. The end of the second pipe body 21 facing away from the support platform 22 is inserted into the second feed channel 201. When the second feed pipe 20 is inserted to its maximum depth into the first feed pipe 10, the limiting rod 51 abuts against the support platform 22. This prevents the limiting rod 51 from interfering with the telescopic movement of the second feed pipe 20 relative to the first feed pipe 10.

[0053] In some embodiments, the pipe expansion compensation device 500 further includes a drive component 60. The drive component 60 is mounted on the first conveying pipe 10. The output end of the drive component 60 is fixedly connected to the end of the second conveying pipe 20 away from the first conveying pipe 10. Thus, the arrangement of the drive component 60 automates the sliding of the second conveying pipe 20 relative to the first conveying pipe 10, reducing manual labor costs.

[0054] In some embodiments, the drive component 60 includes a drive member 61 and a transmission member 62. The transmission member 62 is fixedly connected to the output end of the drive member 61. The pipeline expansion compensation device 500 also includes an adjusting member 70. The adjusting member 70 includes a fixing part 71 and a connecting part 72. The fixing part 71 is fixedly connected to the end of the second feed pipe 20 away from the first feed pipe 10, and the connecting part 72 is movably connected to the end of the transmission member 62 opposite to the drive member 61 along the axial direction X of the first feed pipe 10. Thus, by providing the connecting part 72 to movably connect the transmission member 62 along the axial direction X of the first feed pipe 10, the problem of uneven force on the pipeline expansion compensation device 500 caused by local tilting assembly is avoided when the sealing valve 300 is fixedly connected to the upstream mixing device 200, thereby extending the service life and reducing maintenance costs. Of course, in some embodiments, the adjusting member 70 may be omitted, that is, the transmission member 62 is directly fixedly connected to the second feed pipe 20.

[0055] For example, in this embodiment, the fixing part 71 is fixed to the support platform 22 of the second feed pipe 20 by an installation structure. The installation structure is a bolt. Of course, in some embodiments, the installation structure can also be, but is not limited to, a snap-fit ​​or sliding plug-in structure. The fixing part 71 can also be fixedly connected to the support platform 22 by welding, gluing, or integral molding, etc., and this embodiment of the present invention does not make specific limitations.

[0056] The connecting part 72 and the transmission member 62 can achieve axial displacement compensation in the axial direction X of the first feed pipe 10. For example, the connecting part 72 is generally configured as a C-shaped structure. Specifically, the connecting part 72 is provided with a limiting groove 701 on the side facing away from the fixing part 71. The transmission member 62 is at least partially inserted into the limiting groove 701. The dimension of the transmission member 62 inserted into the limiting groove 701 in the axial direction X of the first feed pipe 10 is a first dimension H1. The dimension of the limiting groove 701 in the axial direction X of the first feed pipe 10 is a second dimension H2. The second dimension H2 is greater than the first dimension H1 and less than a preset dimension. And / or, the transmission member 62 is provided with a connecting hole 601. The connecting part 72 is at least partially inserted into the connecting hole 601. The dimension of the connecting part 72 inserted into the connecting hole 601 in the axial direction X of the first feed pipe 10 is a third dimension H3. The dimension of the connecting hole 601 in the axial direction X of the first feed pipe 10 is a fourth dimension H4. The fourth dimension H4 is greater than the third dimension H3 and less than a preset dimension. Therefore, the connecting part 72 and the end of the transmission component 62 facing away from the driving component 61 can be movably inserted into each other along the sliding direction of the second conveying pipe 20, thereby facilitating the alignment, assembly, and disassembly of the transmission component 62 and the adjusting component 70, and reserving sufficient assembly space during the alignment and assembly of the pipe expansion compensation device 500 and the sealing valve 300 or the sealing valve 300 and the first mixing chamber 210, preventing mechanical damage to the sealing valve 300, the first mixing chamber 210, and the pipe expansion compensation device 500, and improving the reliability and safety of the connections of the various components of the mixing system 1000. The preset dimensions can be set according to factors such as the extension stroke of the driving component 61, and this utility model does not impose specific limitations.

[0057] For example, in this embodiment, the drive member 61 is configured as a cylinder. Therefore, the cylinder has good output force and load capacity, improving the driving effect of the drive member 61 on the first feed pipe 10 and the components mounted on the first feed pipe 10, and extending the service life of the drive member 61. In some embodiments, the drive member 61 may also be configured as, but is not limited to, a hydraulic cylinder or an electric cylinder.

[0058] The extension stroke of the drive component 61 is 0mm-100mm. Therefore, on the one hand, the movement stroke of the second conveying pipe 20 relative to the first conveying pipe 10 can meet the operating space required for the alignment and assembly of the pipe expansion compensation device 500 and the sealing valve 300, or the sealing valve 300 and the first mixing bin 210, improving assembly efficiency and yield. On the other hand, the movement stroke of the second conveying pipe 20 relative to the first conveying pipe 10 avoids excessive friction between the second conveying pipe 20 and the sealing component 32 and the first conveying pipe 10, extending the service life of the pipe expansion compensation device 500 and reducing debris generated during the extension and retraction of the second conveying pipe 20 relative to the first conveying pipe 10, thus improving the quality of material conveying. For example, the extension stroke of the drive component 61 can be, but is not limited to, 0mm, 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, or 100mm.

[0059] In some embodiments, multiple drive components 60 are provided. The multiple drive components 60 are spaced apart along the circumferential direction Z of the first feed pipe 10. This prevents localized stress concentration from causing deformation or damage to the sealing ring 322, improves the sealing performance between the first feed pipe 10 and the second feed pipe 20, and extends the service life of the sealing ring 322. The first feed pipe 10 has at least one plane of symmetry parallel to its central axis, and at least two of the multiple drive components 60 are symmetrically arranged relative to their respective planes of symmetry. Exemplarily, in this embodiment, the number of drive components 60 is set to two. The two drive components 60 are arranged opposite each other in the radial direction Y of the first feed pipe 10. The number of drive components 60 can be set according to actual conditions, and this embodiment of the invention does not impose a specific limitation; for example, the number of drive components 60 can also be one, three, four, or more.

[0060] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A pipeline expansion compensation device (500), characterized in that, include: The first conveying pipe (10) is provided with a first conveying channel (101), and the inner sidewall of the first conveying channel (101) is provided with a support protrusion (11). The second conveying pipe (20) is slidably inserted into the first conveying channel (101) and forms a gap (102) with the first conveying pipe (10). The second conveying pipe (20) is provided with a second conveying channel (201) that is connected to the first conveying channel (101). A sealing component (30) includes a pressing member (31) and a sealing member (32). One end of the pressing member (31) is fixedly connected to the end of the first feed pipe (10) near the second feed pipe (20). The other end of the pressing member (31) presses against the sealing member (32). The sealing member (32) is pressed between the sealing member (32) and the support protrusion (11) and seals the gap (102).

2. The pipeline expansion compensation device (500) as described in claim 1, characterized in that, The sealing element (32) includes two guide rings (321) and at least one sealing ring (322). Each guide ring (321) is attached to the outer side wall of the second feed pipe (20). All sealing rings (322) are arranged sequentially along the axial direction (X) of the first feed pipe (10) and clamped between the two guide rings (321).

3. The pipeline expansion compensation device (500) as described in claim 2, characterized in that, The guide ring (321) is configured as a rigid structure, and the sealing ring (322) is configured as a corrosion-resistant and pressure-resistant disc. The rigid structure includes an MC nylon structure, and the corrosion-resistant and pressure-resistant disc includes a polytetrafluoroethylene self-lubricating disc.

4. The pipeline expansion compensation device (500) as described in claim 1, characterized in that, The distance between the inner wall of the support protrusion (11) facing the second conveying pipe (20) and the central axis of the second conveying pipe (20) is the first distance, and the distance between the inner wall of the seal (32) facing the second conveying pipe (20) and the central axis of the second conveying pipe (20) is the second distance (D2). The first distance is less than or equal to the second distance (D2).

5. The pipeline expansion compensation device (500) as described in claim 1, characterized in that, The end of the pressing member (31) near the sealing member (32) is inserted into the first material conveying channel (101). The sealing member (30) also includes a locking member (40). The pressing member (31) is detachably and fixedly connected to the first material conveying pipe (10) through the locking member (40). The locking member (40) can adjust the depth of the pressing member (31) inserted into the first material conveying channel (101).

6. The pipeline expansion compensation device (500) as described in claim 1, characterized in that, The sealing component (30) further includes a limiting member (50), which is fixedly connected to at least one of the pressing member (31) and the first conveying tube (10). The limiting member (50) is used to limit the maximum depth to which the second conveying tube (20) is inserted into the first conveying tube (10), and to support the second conveying tube (20) when it is inserted into the first conveying tube (10) at the maximum depth.

7. The pipeline expansion compensation device (500) as described in claim 1, characterized in that, The pipe expansion compensation device (500) further includes a driving component (60), which is installed on the first conveying pipe (10). The output end of the driving component (60) is fixedly connected to the end of the second conveying pipe (20) away from the first conveying pipe (10).

8. The pipeline expansion compensation device (500) as described in claim 7, characterized in that, The driving component (60) includes a driving member (61) and a transmission member (62). The transmission member (62) is fixedly connected to the output end of the driving member (61). The pipe expansion compensation device (500) also includes an adjusting member (70). The adjusting member (70) includes a fixing part (71) and a connecting part (72). The fixing part (71) is fixedly connected to the end of the second conveying pipe (20) away from the first conveying pipe (10). The connecting part (72) is movably connected to the end of the transmission member (62) opposite to the driving member (61) along the axial direction (X) of the first conveying pipe (10).

9. The pipeline expansion compensation device (500) as described in claim 8, characterized in that, The connecting part (72) has a limiting groove (701) on the side facing away from the fixing part (71). The transmission member (62) is at least partially inserted into the limiting groove (701). The dimension of the transmission member (62) inserted into the limiting groove (701) in the axial direction (X) of the first conveying pipe (10) is a first dimension (H1). The dimension of the limiting groove (701) in the axial direction (X) of the first conveying pipe (10) is a second dimension (H2). The second dimension (H2) is larger than the first dimension (H1) and smaller than the first dimension (H1). The transmission member (62) is provided with a connecting hole (601), and the connecting part (72) is at least partially inserted into the connecting hole (601). The dimension of the connecting part (72) inserted into the connecting hole (601) in the axial direction (X) of the first conveying pipe (10) is a third dimension (H3), and the dimension of the connecting hole (601) in the axial direction (X) of the first conveying pipe (10) is a fourth dimension (H4). The fourth dimension (H4) is greater than the third dimension (H3) and smaller than the preset dimension.

10. The pipeline expansion compensation device (500) as described in claim 8, characterized in that, The driving components (60) are configured in multiple ways, and the multiple driving components (60) are spaced apart along the circumferential direction (Z) of the first conveying pipe (10).

11. A mixing system (1000), characterized in that, It includes a mixing device (200), a sealing valve (300), and a pipeline expansion compensation device (500) as described in any one of claims 1-10, wherein the sealing valve (300) is disposed between the mixing device (200) and the pipeline expansion compensation device (500).

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