Conveying pipeline

Abstract

The utility model discloses a conveying pipeline which comprises a first pipeline and a second pipeline. The first pipeline comprises a first outer pipe, a first inner pipe arranged in the first outer pipe in a sleeved mode and first connecting rings arranged at the end of the first outer pipe and the end of the first inner pipe, and a first cavity is formed between the first outer pipe and the first inner pipe. The second pipeline comprises a second outer pipe, a second inner pipe arranged in the second outer pipe in a sleeved mode and a second connecting ring arranged at the end of the second outer pipe and the end of the second inner pipe, a second cavity communicated with the first cavity is formed between the second outer pipe and the second inner pipe, and the first connecting ring is detachably connected with the second connecting ring. According to the split type conveying pipeline, a traditional integrated conveying pipeline is improved into the split type conveying pipeline, the conveying pipeline is composed of the first pipeline body and the second pipeline body which are detachably connected, when parts in the conveying pipeline are replaced, only the corresponding pipeline body needs to be detached, the detaching process is very convenient, and the detaching efficiency of the conveying pipeline is improved.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline technology, and specifically relates to a transportation pipeline. Background Technology

[0002] Pipelines are tubular devices used to transport various fluids (such as liquids, gases, slurries, etc.) or bulk solid materials (such as powders). They are widely used in many fields such as material packaging, petroleum, chemical, natural gas, water supply and drainage, heating, and ventilation.

[0003] Layered conveying pipelines have a special pipeline structure that allows them to achieve complex functional requirements that a single pipeline cannot meet (such as material degassing, heat preservation, cold preservation, corrosion protection, structural reinforcement, or quality monitoring) through the combination of inner and outer pipelines. However, since both inner and outer pipelines of layered conveying pipelines are integral, replacing components within the pipeline requires disassembling the entire pipeline from the equipment, which is very inconvenient.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide a conveying pipeline that solves the problem of difficult disassembly of existing conveying pipelines.

[0006] To achieve the above objectives, a specific embodiment of this utility model provides a conveying pipeline, which includes a first pipeline and a second pipeline. The first pipeline includes a first outer pipe, a first inner pipe sleeved within the first outer pipe, and a first connecting ring disposed at the ends of the first outer pipe and the first inner pipe, forming a first cavity between the first outer pipe and the first inner pipe. The second pipeline includes a second outer pipe, a second inner pipe sleeved within the second outer pipe, and a second connecting ring disposed at the ends of the second outer pipe and the second inner pipe, forming a second cavity communicating with the first cavity between the second outer pipe and the second inner pipe, and the first connecting ring and the second connecting ring are detachably connected.

[0007] In one or more embodiments of the present invention, one of the first connecting ring and the second connecting ring includes an axially extending insertion portion, and the other includes a slot for insertion of the insertion portion.

[0008] In one or more embodiments of this utility model, the first connecting ring is provided with a first communicating hole that communicates with the first cavity, and the second connecting ring is provided with a second communicating hole that communicates with the second cavity and the first communicating hole.

[0009] In one or more embodiments of the present invention, the first connecting ring includes a first main body portion abutting against the end of the first outer tube, a first extension portion extending from the first main body portion into the first outer tube, and a second extension portion extending from the first extension portion into the first cavity, wherein the end of the first inner tube near the first connecting ring abuts against the first extension portion.

[0010] In one or more embodiments of this utility model, the end of the first inner tube is inserted into the first extension.

[0011] In one or more embodiments of this utility model, a first connecting hole is provided on the first main body and is radially through and connected to the second cavity, and a flow groove is formed on the outer peripheral wall of the second extension and is connected to the first connecting hole.

[0012] In one or more embodiments of the present invention, the second connecting ring includes a second main body portion that abuts against the end of the second outer tube and the end of the second inner tube, and a third extension portion that extends from the second main body portion into the second cavity.

[0013] In one or more embodiments of the present invention, one of the first connecting ring and the second connecting ring is provided with an axially extending positioning post, and the other is provided with a positioning groove for the positioning post to be inserted.

[0014] In one or more embodiments of this utility model, the first connecting ring and the second connecting ring are detachably connected by a radially arranged spring pin assembly.

[0015] In one or more embodiments of this utility model, the first inner tube or the second inner tube is a microporous tube.

[0016] Compared with the existing technology, this utility model improves the traditional integrated conveying pipeline into a split conveying pipeline. The conveying pipeline consists of a first pipeline and a second pipeline that can be detachably connected. When replacing the components inside the conveying pipeline, only the corresponding pipeline needs to be removed. The disassembly process is very convenient and improves the disassembly efficiency of the conveying pipeline. Attached Figure Description

[0017] 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 recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the conveying pipeline in one embodiment of the present utility model;

[0019] Figure 2This is a front view of the conveying pipeline in one embodiment of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the first pipe in one embodiment of the present utility model;

[0021] Figure 4 This is a cross-sectional view of the conveying pipeline in one embodiment of the present invention;

[0022] Figure 5 for Figure 4 A magnified view of part A in the middle;

[0023] Figure 6 This is a three-dimensional structural view of the first connecting ring in one embodiment of the present invention;

[0024] Figure 7 This is a three-dimensional structural diagram of the second pipe in one embodiment of the present invention;

[0025] Figure 8 This is a plan view of the second pipe in one embodiment of the present invention;

[0026] Figure 9 This is a cross-sectional structural diagram of the first pipe in one embodiment of the present invention.

[0027] Explanation of main reference numerals in the attached drawings: 1. First pipe, 11. First outer pipe, 12. First inner pipe, 13. First cavity, 14. First connecting ring, 141. First main body, 1411. First receiving groove, 142. First extension, 143. Second extension, 1431. Flow groove, 144. Insertion part, 145. First connecting hole, 146. Positioning post, 147. First connecting groove, 2. Second pipe, 21. Second outer pipe, 22. Second inner pipe, 23. Second cavity, 24. Second connecting ring, 241. Second main body, 2411. Second receiving groove, 242. Third extension, 243. Slot, 244. Second connecting hole, 245. Positioning groove, 246. Second connecting groove, 3. First sealing ring, 4. Second sealing ring, 5. Pin, 6. Elastic element. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0029] In the description of this utility model, it should be understood that the terms "top", "bottom", "upper", "lower", 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, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "second" and "first" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "second" or "first" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In one embodiment, reference is made to Figures 1 to 5 As shown, this utility model provides a conveying pipe, which includes a first pipe 1 and a second pipe 2 that are detachably connected. The traditional integrated conveying pipe is improved into a split first pipe 1 and second pipe 2, so as to facilitate the disassembly of the conveying pipe and the replacement of the components inside the conveying pipe.

[0032] Specifically, the first pipe 1 includes a first outer pipe 11 and a first inner pipe 12 sleeved inside the first outer pipe 11, with a first cavity 13 formed between the first outer pipe 11 and the first inner pipe 12. The second pipe 2 includes a second outer pipe 21 and a second inner pipe 22 sleeved inside the second outer pipe 21, with a second cavity 23 formed between the second outer pipe 21 and the second inner pipe 22.

[0033] The first cavity 13 of the first pipe 1 is connected to the second cavity 23 of the second pipe 2. The first cavity 13 and the second cavity 23 can be used to transport fluids, or they can also be used to store fluids, solids or other media in other states.

[0034] When the first cavity 13 and the second cavity 23 are used for gas flow, they can be used to create negative pressure or pressurize the first cavity 13 and the second cavity 23. When the first cavity 13 and the second cavity 23 are used for liquid flow, the liquid can act as a heat exchange medium to exchange heat with the fluid in the first inner tube 12 and the second inner tube 22. When the first cavity 13 and the second cavity 23 are used for storing a medium, the medium can be a heat-insulating medium, a waterproof medium, a fire-resistant medium, a corrosion-resistant medium, a sealing medium, or other functional media with specific functions.

[0035] Optionally, the conveying pipe can be used in a powder degassing device. A screw conveying mechanism is installed in the first inner tube 12 and the second inner tube 22 of the conveying pipe to convey the powder. Both the first inner tube 12 and the second inner tube 22 can be constructed as microporous tubes. The first cavity 13 and the second cavity 23 of the conveying pipe are used to provide negative pressure to degas the powder in the conveying pipe.

[0036] It should be noted that the application scenarios of the conveying pipelines in the above embodiments are one possible application scenario in actual application and do not constitute a limitation on the conveying pipelines. In addition, when the first cavity 13 and the second cavity 23 are used to convey fluid, inlets and outlets can be opened on the first outer pipe 11 and the second outer pipe 21 respectively. The fluid is sequentially input into the first cavity 13 and the second cavity 23 through the inlet and then output through the outlet.

[0037] In one embodiment, reference is made to Figures 2 to 5 As shown, the conveying pipeline also includes a first connecting ring 14 located at the end of the first pipeline 1 and a second connecting ring 24 located at the end of the second pipeline 2, wherein the first connecting ring 14 and the second connecting ring 24 are detachably connected.

[0038] Reference Figure 5 and Figure 6 As shown, the first connecting ring 14 includes a first main body 141, a first extension 142, and a second extension 143. The first main body 141 abuts against the end of the first outer tube 11. The first extension 142 extends from the first main body 141 into the interior of the first outer tube 11 and abuts against the end of the first inner tube 12. The second extension 143 extends from the end of the first extension 142 into the first cavity 13 and contacts the inner wall of the first outer tube 11 and the outer wall of the first inner tube 12, thereby fixing the radial position of the first outer tube 11 and the first inner tube 12 and preventing relative radial movement between them.

[0039] Furthermore, the end of the first inner tube 12 is inserted into the first extension 142 to further limit the radial and axial positions of the first inner tube 12.

[0040] Optionally, the first main body 141, the first extension 142, and the second extension 143 are all configured as annular structures.

[0041] Reference Figure 5As shown, the second connecting ring 24 includes a second main body 241 and a third extension 242. The end of the second main body 241 abuts against the end of the second outer tube 21 and the end of the second inner tube 22. The third extension 242 extends from the end of the second main body 241 into the second cavity 23. The third extension 242 fits against the inner wall of the second outer tube 21 and the outer wall of the second inner tube 22 to fix the radial position of the second outer tube 21 and the second inner tube 22, preventing the second outer tube 21 and the second inner tube 22 from moving relative to each other in the radial direction. At the same time, the third extension 242 can also improve the sealing of the second cavity 23.

[0042] Optionally, both the second main body 241 and the third extension 242 are configured as ring structures.

[0043] In one embodiment, reference is made to Figure 5 As shown, the first connecting ring 14 and the second connecting ring 24 are detachably connected by a radially arranged spring pin assembly. The spring pin assembly includes a pin body 5 and an elastic member 6. The first connecting ring 14 has a radially extending first connecting groove 147, and the second connecting ring 24 has a radially extending second connecting groove 246 corresponding to the first connecting groove 147. The elastic member 6 is disposed in the first connecting groove 147. A part of the pin body 5 is located in the first connecting groove 147 and abuts against the elastic member 6, while the other part can extend out of the first connecting groove 147 when the elastic member 6 is not compressed, and can retract into the first connecting groove 147 when the elastic member 6 is compressed.

[0044] When connecting the first connecting ring 14 and the second connecting ring 24, press the pin 5. The pin 5 compresses the elastic element 6 and enters the first connecting groove 147 as a whole. Then, align the second connecting groove 246 of the second connecting ring 24 with the first connecting groove 147 of the first connecting ring 14. After releasing the pin 5, the pin 5 can enter the second connecting groove 246 under the drive of the elastic element 6, connecting the first connecting ring 14 and the second connecting ring 24 together, thereby connecting the first pipe 1 and the second pipe 2 together. When disassembling the first connecting ring 14 and the second connecting ring 24, press the pin 5 again to disengage it from the second connecting groove 246.

[0045] Optionally, the elastic element 6 can be a spring, which can be fitted onto the portion of the pin 5 located within the first connecting groove 147. A radially protruding stop is provided on the periphery of the pin 5, which, together with the bottom of the first connecting groove 147, limits the installation of the spring 6.

[0046] It should be noted that the connection method of the first connecting ring 14 and the second connecting ring 24 in the above embodiments is one possible connection method in actual application and does not constitute a limitation on the first connecting ring 14 and the second connecting ring 24. In other embodiments, the first connecting ring 14 and the second connecting ring 24 may also be connected by detachable methods such as threaded connection, clamp connection, snap connection, magnetic connection, or interference fit.

[0047] In one embodiment, reference is made to Figures 6 to 8 As shown, in order to connect the first cavity 13 and the second cavity 23, the first connecting ring 14 is provided with a first connecting hole 145 that communicates with the first cavity 13, and the second connecting ring 24 is provided with a second connecting hole 244 that communicates with the second cavity 23 and the first connecting hole 145.

[0048] Optionally, the first connecting hole 145 extends through the first connecting ring 14 axially, and the second connecting hole 244 extends through the second connecting ring 24 axially, with the opening of the first connecting hole 145 facing the second connecting hole 244.

[0049] Optionally, multiple first connecting holes 145 and multiple second connecting holes 244 are provided, with the multiple first connecting holes 145 arranged at equal intervals along the circumference of the first connecting ring 14, and the multiple second connecting holes 244 arranged at equal intervals along the circumference of the second connecting ring 24.

[0050] According to the above structural design, when the first cavity 13 and the second cavity 23 are used to transport fluid, the first connecting hole 145 and the second connecting hole 244 can connect the first cavity 13 and the second cavity 23, and the fluid in the first cavity 13 can flow into the second cavity 23 sequentially through the first connecting hole 145 and the second connecting hole 244. Conversely, the fluid in the second cavity 23 can also flow into the first cavity 13 sequentially through the second connecting hole 244 and the first connecting hole 145.

[0051] Furthermore, referring to Figure 6 and Figure 9 As shown, the first connecting hole 145 extends axially through the first main body portion 141 and the insertion portion 144. A flow groove 1431 is formed on the circumferential outer wall of the second extension portion 143. The flow groove 1431 is located inside the first cavity 13 and communicates with it. The first connecting hole 145 also extends through the groove wall of the flow groove 1431 near the first main body portion 141 and communicates with it, so that the first cavity 13 and the first connecting hole 145 are connected through the flow groove 1431.

[0052] Optionally, multiple first connecting holes 145 and flow channels 1431 are provided, and they are interconnected in a one-to-one correspondence.

[0053] In one embodiment, reference is made to Figures 5 to 7 As shown, in order to improve the connection efficiency of the first connecting ring 14 and the second connecting ring 24, the first connecting ring 14 further includes a plug portion 144 extending from the first main body portion 141 toward the second connecting ring 24, and the second connecting ring 24 includes a slot 243 axially recessed from its end, and the plug portion 144 is inserted into the slot 243.

[0054] Optionally, both the plug-in portion 144 and the slot 243 are configured as a ring structure.

[0055] Optionally, the second connecting hole 244 extends axially from the bottom of the slot 243 to the side of the third extension 242 away from the second main body 241.

[0056] It should be noted that the positions of the plug-in part 144 and the slot 243 in the above embodiments are one possible connection method in actual application. In other embodiments, the positions of the plug-in part 144 and the slot 243 can also be interchanged, with the plug-in part 144 set on the second connecting ring 24 and the slot 243 set on the first connecting ring 14.

[0057] In one embodiment, reference is made to Figure 5 As shown, a sealing ring is provided between the insertion part 144 and the slot 243 to improve the sealing between the first connecting ring 14 and the second connecting ring 24.

[0058] Optionally, a first sealing ring 3 is provided between the outer peripheral wall of the plug-in portion 144 and the slot 243, and a second sealing ring 4 is provided between the inner peripheral wall of the plug-in portion 144 and the slot 243.

[0059] Optionally, a first receiving groove 1411 is formed on the outer peripheral wall of the insertion part 144, and the first sealing ring 3 is at least partially fitted inside the first receiving groove 1411. A second receiving groove 2411 is formed on the inner peripheral groove wall of the slot 243, and the second sealing ring 4 is at least partially fitted inside the second receiving groove 2411.

[0060] It should be noted that the positions of the first receiving groove 1411 and the second receiving groove 2411 in the above embodiments are a design scheme that can be selected in actual application. In other embodiments, the first receiving groove 1411 can also be set on the outer peripheral groove wall of the slot 243, and the second receiving groove 2411 can also be set on the inner peripheral wall of the insertion part 144.

[0061] In one embodiment, reference is made to Figure 6 and Figure 8 As shown, the first connecting ring 14 is provided with an axially extending positioning post 146, and the second connecting ring 24 is provided with an axially recessed positioning groove 245 for the positioning post 146 to be inserted. The positioning post 146 and the positioning groove 245 can improve the efficiency of assembling the first connecting ring 14 and the second connecting ring 24.

[0062] It should be noted that the positions of the positioning post 146 and the positioning groove 245 in the above embodiments are one possible connection method in actual application. In other embodiments, the positions of the positioning post 146 and the positioning groove 245 can also be interchanged, with the positioning post 146 set on the second connecting ring 24 and the positioning groove 245 set on the first connecting ring 14.

[0063] In one embodiment, the first connecting ring 14 is fixedly connected to the first outer tube 11 and the first inner tube 12 by welding, and the second connecting ring 24 is fixedly connected to the second outer tube 21 and the second inner tube 22 by welding.

[0064] In other embodiments, the first connecting ring 14 can also be connected to the first outer tube 11 and the first inner tube 12 by other fixed connection methods. Similarly, the second connecting ring 24 can also be connected to the second outer tube 21 and the second inner tube 22 by other fixed connection methods.

[0065] When the conveying pipe in the above embodiments is applied to the powder degassing device of the packaging scale, the conveying pipe can simultaneously serve as a pipe for conveying powder and a pipe for degassing powder.

[0066] Specifically, a screw conveyor mechanism is installed in the first inner tube 12 and the second inner tube 22 to convey powder. The first inner tube 12 is configured as a microporous tube, and an opening is opened on the second outer tube 21. The opening can be selectively connected to a negative pressure system (e.g., a negative pressure pump) or a backflush system (e.g., a backflush pump) under the control of a control valve.

[0067] When degassing of the powder is required, the opening on the second outer tube 21 is connected to the negative pressure system, so that negative pressure is generated in the first cavity 13 and the second cavity 23. Under the action of negative pressure and the extrusion force provided by the spiral blade, the gas in the powder can be drawn into the first cavity 13 and the second cavity 23 through the microporous tube, thereby realizing the degassing treatment of the powder.

[0068] After the powder has been degassed for a period of time, the opening on the second outer tube 21 can be connected to the backflush system to introduce gas into the first cavity 13 and the second cavity 23, pressurize the first cavity 13 and the second cavity 23, backflush the microporous tube, and blow the powder that is blocked in the pores of the microporous tube into the tube body.

[0069] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0070] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A delivery conduit, characterized in that, The conveying pipeline includes: The first pipe (1) includes a first outer pipe (11), a first inner pipe (12) sleeved inside the first outer pipe (11), and a first connecting ring (14) disposed at the end of the first outer pipe (11) and the end of the first inner pipe (12), and a first cavity (13) is formed between the first outer pipe (11) and the first inner pipe (12). The second pipe (2) includes a second outer pipe (21), a second inner pipe (22) sleeved inside the second outer pipe (21), and a second connecting ring (24) disposed at the end of the second outer pipe (21) and the end of the second inner pipe (22). A second cavity (23) communicating with the first cavity (13) is formed between the second outer pipe (21) and the second inner pipe (22). The first connecting ring (14) is detachably connected to the second connecting ring (24).

2. The delivery conduit of claim 1, wherein, One of the first connecting ring (14) and the second connecting ring (24) includes an axially extending insertion portion (144), and the other includes a slot (243) for insertion of the insertion portion (144).

3. The delivery conduit of claim 1, wherein, The first connecting ring (14) is provided with a first communicating hole (145) that communicates with the first cavity (13), and the second connecting ring (24) is provided with a second communicating hole (244) that communicates with the second cavity (23) and the first communicating hole (145).

4. The delivery conduit of claim 1, wherein, The first connecting ring (14) includes a first main body portion (141) abutting against the end of the first outer tube (11), a first extension portion (142) extending from the first main body portion (141) into the first outer tube (11), and a second extension portion (143) extending from the first extension portion (142) into the first cavity (13), wherein the end of the first inner tube (12) near the first connecting ring (14) abuts against the first extension portion (142).

5. The delivery conduit of claim 4, wherein, The end of the first inner tube (12) is inserted into the first extension (142).

6. The delivery conduit of claim 4, wherein, The first main body (141) is provided with a first connecting hole (145) that is radially through and connected to the second cavity (23), and a flow groove (1431) that is connected to the first connecting hole (145) is formed on the outer peripheral wall of the second extension (143).

7. The delivery conduit of claim 1, wherein, The second connecting ring (24) includes a second main body (241) that abuts against the end of the second outer tube (21) and the end of the second inner tube (22), and a third extension (242) that extends from the second main body (241) into the second cavity (23).

8. The delivery conduit of claim 1, wherein, One of the first connecting ring (14) and the second connecting ring (24) is provided with an axially extending positioning post (146), and the other is provided with a positioning groove (245) for the positioning post (146) to be inserted.

9. The delivery conduit of claim 1, wherein, The first connecting ring (14) and the second connecting ring (24) are detachably connected by a radially arranged spring pin assembly.

10. The delivery conduit of claim 1, wherein, The first inner tube (12) or the second inner tube (22) is a microporous tube.

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