Powder conveying pipeline

Abstract

The utility model discloses a powder conveying pipeline which comprises at least one conveying pipe section, a powder conveying pipe cavity is formed in the conveying pipe section, powder inlets and outlets communicated with the powder conveying pipe cavity are formed in the two ends of the conveying pipe section, and one end of the conveying pipe section is suitable for forming air negative pressure; wherein the conveying pipeline is provided with a rotating part, and the rotating part is used for enabling the conveying pipeline section to rotate around the horizontal direction. According to the powder conveying pipeline, accumulated powder can be removed, the risk that the powder blocks the pipeline is reduced, and the powder conveying efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to powder conveying technical field especially relates to a powder conveying pipeline. BACKGROUND

[0002] In the existing lithium ion battery homogenate process, the positive material powder is sent from the ton bag feeding station to the main powder tank, usually adopts the mode of pneumatic conveying, connects the negative pressure source on the main powder storage tank to form negative pressure in the main powder storage tank, and connects the ton bag feeding station and the main powder storage tank through the conveying pipeline, adds the air supplement filter core to the direction of vertical powder feeding, adopts the air impact powder movement to make it be conveyed and transferred to the main powder storage tank, because the distance between the ton bag feeding station and the powder storage tank is long, the powder moves to the powder storage tank direction under the air impact, is affected by the horizontal force, and the powder is affected by the downward gravity due to the influence of the gravity, when the horizontal force is not enough to overcome the gravity, is easy to accumulate below the pipeline, thereby forming the powder pipe blocking phenomenon, after pipe blocking, because the pipeline is usually erected in the high air, the pipe cleaning is very inconvenient, once the powder pipe blocking occurs, the influence on the normal production is larger. SUMMARY

[0003] The utility model discloses at least solve one of the prior art technical problems. Therefore, the utility model provides a powder conveying pipeline, the powder conveying pipeline can realize the removal of accumulated powder, reduce the risk of powder pipe blocking, and greatly improve the conveying efficiency of powder.

[0004] The powder conveying pipeline according to the utility model embodiment, at least one conveying pipe section is formed in the conveying pipe section, the conveying pipe section is formed with the powder conveying pipe cavity, the conveying pipe section is formed with the powder inlet and outlet, and one end of the conveying pipe section is adapted to form air negative pressure, wherein the conveying pipe section is formed with a rotating part, and the rotating part is used to rotate the conveying pipe section around the axis of the conveying pipe section.

[0005] The powder conveying pipeline according to the utility model embodiment, by setting the conveying pipe section formed with the rotating part, the conveying pipe section can rotate around the axis of the conveying pipe section, to promote the flow of powder, thereby realizing the removal of accumulated powder, reducing the risk of long-distance powder pipe blocking, and greatly improving the conveying efficiency of powder.

[0006] The powder conveying pipeline according to some embodiments of the utility model, the powder conveying pipeline further includes a driving member, the rotating part is configured as a driven structure, the driving member is power connected with the driven structure, and the driving member is used to drive the driven structure to rotate the conveying pipe section.

[0007] According to some embodiments of the powder conveying pipeline, the rotating part is configured as a driven gear, the driven gear is fixed to the outer peripheral wall of the conveying pipe segment, the output end of the driving part is provided with a driving gear, and the driving gear is engaged with the driven gear for transmission.

[0008] According to some embodiments of the powder conveying pipeline, the rotating part is configured as a rotating handle, and the rotating handle is protrusively arranged on the outer peripheral wall of the conveying pipe segment.

[0009] According to some embodiments of the powder conveying pipeline, the conveying pipe segments are multiple, and two adjacent conveying pipe segments are detachably connected.

[0010] According to some embodiments of the powder conveying pipeline, an adapter is arranged between two adjacent conveying pipe segments, one of the two conveying pipe segments is rotatably connected to the adapter through a connecting bearing, and the other of the two conveying pipe segments is detachably connected to the adapter through a connecting fastener.

[0011] According to some embodiments of the powder conveying pipeline, two adapters are arranged between two adjacent conveying pipe segments, the two conveying pipe segments are one-to-one connected to the two adapters respectively, each conveying pipe is rotatably connected to the corresponding adapter through a connecting bearing, and the two adapters are detachably connected through a connecting fastener.

[0012] According to some embodiments of the powder conveying pipeline, the connecting bearing comprises a bearing inner ring and a bearing outer ring in rotationally matched mode, the bearing inner ring is fixedly connected to the conveying pipe segment, and the adapter is fixedly connected to the bearing outer ring.

[0013] And / or, an oil seal is arranged between the adapter and the connecting bearing.

[0014] According to some embodiments of the powder conveying pipeline, the powder conveying pipeline further comprises a support seat, and the conveying pipe segment is rotatably supported on the support seat through a rotating bearing.

[0015] According to some embodiments of the powder conveying pipeline, two adjacent conveying pipe segments are detachably connected through a connecting fastener.

[0016] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the references to the following drawings, of which:

[0018] Figure 1 is a structural schematic of the powder conveying pipeline according to the embodiment of the present application Figure One ;

[0019] Figure 2 is a structural schematic of the powder conveying pipeline according to the embodiment of the present application Figure Two ;

[0020] Figure 3 is a structural schematic of the powder conveying pipeline according to the embodiment of the present application Figure Three ;

[0021] Figure 4 is a structural schematic of the powder conveying pipeline according to the embodiment of the present application Figure Four ;

[0022] Figure 5 is a structural schematic of the powder conveying pipeline according to the embodiment of the present application Figure Five ;

[0023] Figure 6 is a structural schematic of the powder conveying pipeline according to the embodiment of the present application Figure Six .

[0024] Reference signs:

[0025] Powder conveying pipeline 100,

[0026] Conveying pipe section 1, air negative pressure 12,

[0027] Driven gear 21, rotating handle 22,

[0028] Adapter 3, connecting bearing 4, bearing inner ring 41, bearing outer ring 42,

[0029] Connecting quick card 5, oil seal 6, rotating bearing 7, support seat 8. DETAILED DESCRIPTION

[0030] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0031] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The features limited by "first" and "second" can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0032] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] Reference is made below Figures 1-6 The powder conveying pipeline 100 according to the embodiment of the utility model is described, which can realize the removal of accumulated powder, reduce the risk of powder pipe blockage, and greatly improve the conveying efficiency of powder.

[0034] First of all, it should be pointed out that the embodiment of the utility model can be applied to long-distance powder conveying pipeline 100, and also can be applied to short-distance powder conveying pipeline 100, can be applied to the conveying of lithium ion battery positive electrode powder material, also can be applied to the conveying of other powder materials, the utility model takes the conveying of lithium ion battery positive electrode powder material from ton bag feeding station to main powder storage tank as an example for description.

[0035] As Figures 1-6 As shown, the powder conveying pipeline 100 according to one embodiment of the utility model comprises at least one conveying pipe section 1, that is, the powder conveying pipeline 100 can comprise one, two, three or even multiple conveying pipe sections 1, the longer the conveying distance, the more conveying pipe sections 1, correspondingly, the shorter the conveying distance, the fewer conveying pipe sections 1, through multiple conveying pipe sections 1 to realize the connection between ton bag feeding station and main powder storage tank and the smooth conveying of battery positive electrode powder material.

[0036] The powder conveying pipe section 1 is formed with a powder conveying pipe cavity for accommodating powder, and the powder can be conveyed in the powder conveying pipe cavity. The two ends of the powder conveying pipe section 1 are formed with powder inlets and outlets communicating with the powder conveying pipe cavity, that is, one end of the powder conveying pipe section 1 is a powder inlet, and the other end of the powder conveying pipe section 1 is a powder outlet, so that the powder can enter the powder conveying pipe cavity from the powder inlet, be conveyed, and be discharged from the powder outlet into the main powder storage tank.

[0037] One end of the powder conveying pipe section 1 is adapted to form an air negative pressure 12, that is, the end of the powder conveying pipe section 1 connected with the main powder storage tank, that is, the powder outlet end of the powder conveying pipe section 1 is formed with a negative pressure. Figure 1 As shown in the figure, the right end of the powder conveying pipe section 1 is formed with an air negative pressure 12, and the powder material is conveyed from the left end to the right end. In this way, the negative pressure can be used to attract the powder at the left end of the powder conveying pipe section 1 to flow along the powder conveying pipe section 1, so as to be smoothly conveyed to the right end of the powder conveying pipe section 1, and the powder can be smoothly transferred from one end to the other end of the powder conveying pipe section 1.

[0038] The powder conveying pipe section is formed with a rotating part for rotating the powder conveying pipe section 1 about the axis of the powder conveying pipe section 1.

[0039] Specifically, when the powder is conveyed through the powder conveying pipe 100, the powder conveying pipe 100 is usually placed horizontally or at an angle with the horizontal direction. However, due to the long length of the powder conveying pipe 100, the farther away from the air negative pressure 12, the smaller the negative pressure acting on the powder, that is, the smaller the horizontal force acting on the powder. When the horizontal force acting on the powder is insufficient to overcome the gravity of the powder, the powder will accumulate at the bottom of the conveying pipe, thereby causing the powder to block the pipe. Therefore, the rotating part can be arranged on the conveying pipe to solve this problem. The rotating part can rotate the powder conveying pipe section 1 about the axis of the powder conveying pipe section 1. In the process of rotation, on the one hand, the powder accumulated at the bottom of the conveying pipe can be lifted above the conveying pipe, and then the accumulated powder falls downward under the action of its own gravity, while the horizontal direction is impacted by the negative pressure air to move to the right end, that is, the direction of the main powder storage tank. On the other hand, the accumulated powder can be disturbed, which can more effectively promote the flow of the powder, so as to facilitate the separation of the accumulated powder. Thus, the accumulated powder can be removed, the risk of powder blocking the pipe is reduced, and the conveying efficiency of the powder can be greatly improved.

[0040] According to the powder conveying pipe 100 of the embodiment of the present application, the powder conveying pipe section formed with the rotating part can rotate about the axis of the powder conveying pipe section 1, so as to promote the flow of the powder, thereby removing the accumulated powder, reducing the risk of powder blocking the pipe, and greatly improving the conveying efficiency of the powder.

[0041] In some embodiments, the powder conveying pipeline 100 further comprises a driving member, the rotating part is configured as a driven structure, the driving member is in power connection with the driven structure, and the driving member is used to drive the driven structure to drive the conveying pipe segment 1 to rotate. That is, the driving member is the power source for the rotation of the conveying pipe segment 1, and the driving member can provide power to the driven structure to drive the driven structure to move, which can drive the conveying pipe segment 1 to rotate, thereby realizing the rotation of the conveying pipe segment 1. The driving member drives, which is flexible and convenient, and does not need to manually rotate the conveying pipe segment 1, which improves the efficiency.

[0042] In some embodiments, as shown in Figure 3 and Figure 6 , the rotating part is configured as a driven gear 21, and the driven gear 21 is fixed to the outer peripheral wall of the conveying pipe segment 1, that is, the driven gear 21 is sleeved on the outer peripheral wall of the conveying pipe segment 1. The driven gear 21 and the conveying pipe segment 1 can be connected by welding. In this way, when the driven gear 21 rotates, it can drive the conveying pipe segment 1 to rotate synchronously. The output end of the driving member is provided with a driving gear, and the driving gear is engaged with the driven gear 21, that is, the driving gear and the driven gear 21 are engaged for transmission.

[0043] Therefore, when the driving member starts to operate, the driving member can drive the driving gear to rotate, and the driving gear can drive the driven gear 21 engaged therewith to rotate when the driving gear rotates. The driven gear 21 can drive the conveying pipe segment 1 to rotate when the driven gear 21 rotates, thereby realizing power transmission from the driving member to the conveying pipe segment 1 and realizing flexible rotation of the conveying pipe segment 1.

[0044] In actual design, the driving member can be set as a driving motor, and the rotation frequency of the driving motor can be controlled to realize automatic control of the rotation speed of the driven gear 21, so as to flexibly control the rotation speed and rotation time of the conveying pipe segment 1, realize the removal of the accumulated powder, and reduce the risk of powder blocking the conveying pipeline.

[0045] In some embodiments, as shown in Figure 1 , Figure 2 , Figure 4 and Figure 5 , the rotating part is configured as a rotating handle 22, and the rotating handle 22 is protrudingly arranged on the outer peripheral wall of the conveying pipe segment 1. The rotating handle 22 can be configured as a bent shape for the operator to hold. In actual design, the rotating handle 22 can be welded to the outer peripheral wall of the conveying pipe segment 1 to ensure the firmness of the rotating handle 22 and prevent the rotating handle 22 from falling off.

[0046] Therefore, the rotating handle 22 can also be directly manually driven to rotate the conveying pipe segment 1 by holding the rotating handle 22, realizing manual control of the conveying pipe segment 1, and the rotation speed and rotation time can be controlled by oneself, which is flexible and convenient, simple in structure, and low in cost.

[0047] In some embodiments, the conveying pipe section 1 is multiple, that is, the conveying pipe can be provided as two, three, four or even more, and the multiple conveying pipe sections 1 can increase the length of the powder conveying pipe 100 to achieve long-distance conveying of the powder. Adjacent two conveying pipe sections 1 in the multiple conveying pipe sections 1 are detachably connected, that is, adjacent two conveying pipe sections 1 in the multiple conveying pipe sections 1 can be connected through threaded connection, flange connection, groove connection, buckle connection, clamping connection and the like. In this way, it is convenient to assemble and disassemble each conveying pipe section 1, and when one of the conveying pipe sections 1 needs to be replaced and repaired due to damage or wear, it can be easily and conveniently disassembled and replaced. The length of the conveying pipe can also be flexibly adjusted. For example, when the conveying distance needs to be increased, more conveying pipe sections 1 can be simply added, and when the conveying distance needs to be reduced, the conveying pipe sections 1 can be quickly disassembled without the need to disassemble the entire conveying pipe, thereby greatly improving the assembly and disassembly efficiency of the conveying pipe section 1.

[0048] It should be noted that each conveying pipe section 1 can rotate synchronously or asynchronously, and can be flexibly set according to actual needs.

[0049] In some embodiments, an adapter 3 is arranged between adjacent two conveying pipe sections 1, and the adapter 3 is used to connect the two conveying pipe sections 1. The conveying pipe section 1 can be provided with an interface matched with the adapter 3, so that adjacent two conveying pipe sections 1 can be connected through the adapter 3.

[0050] In this way, through the connection of the adapter 3, the conveying pipe section 1 can be connected with the adapter 3 in a simple, fast and firm manner.

[0051] That is, one of the adjacent two conveying pipe sections 1 can realize relative rotation between the conveying pipe section 1 and the adapter 3 through the connecting bearing 4, so as to realize flexible rotation of the conveying pipe section 1. The connection through the connecting bearing 4 can also reduce friction and wear caused by rotation of the conveying pipe section 1, thereby prolonging the service life of the conveying pipe section 1. The other one of the two conveying pipe sections 1 is detachably connected with the adapter 3 through the connecting fastener 5, that is, the other conveying pipe section 1 does not rotate relative to the adapter 3, and is connected with the adapter 3 through the connecting fastener 5. In this way, the conveying pipe section 1 and the adapter 3 can be connected in a simple, fast and firm manner.

[0052] Therefore, through the connection of the connecting bearing 4, the adapter 3 and the connecting fastener 5, flexible and reliable connection between adjacent two conveying pipe sections 1 can be realized, and at the same time, flexible rotation of one of the conveying pipe sections 1 can be realized. The structure is simple and reliable.

[0053] Specifically, as shown in Figure 2 and Figure 3As shown in FIGS. 1 and 2, three conveying pipe sections 1 are shown, and one adapter 3 is arranged between the conveying pipe sections 1 at both sides and the middle conveying pipe section 1. The middle conveying pipe section 1 is rotatably connected to the two adapters 3 through a connecting bearing 4, and the conveying pipe sections 1 at both sides are connected to the two adapters 3 through a connecting fastener 5. In this way, the middle conveying pipe section 1 can be flexibly rotated, the conveying pipe sections 1 at both sides are fixed and can be conveniently disassembled.

[0054] In some embodiments, two adapters 3 are arranged between two adjacent conveying pipe sections 1, and the two conveying pipe sections 1 are connected to the two adapters 3 in a one-to-one correspondence. Each conveying pipe section 1 is rotatably connected to the corresponding adapter 3 through a connecting bearing 4, and the two adapters 3 are detachably connected through a connecting fastener 5.

[0055] That is, the ends of the two adjacent conveying pipe sections 1 close to each other can be relatively rotated with the two adapters 3 through the two connecting bearings 4, so as to realize the relative rotation between the two adjacent conveying pipe sections 1, that is, the two adjacent conveying pipe sections 1 can be rotated, and each conveying pipe section 1 can be rotated, which can be synchronous or asynchronous rotation, and can be flexibly set according to actual needs. In addition, the connection through the connecting bearing 4 can reduce the friction and wear caused by the rotation of the conveying pipe section 1, prolong the service life of the conveying pipe section 1, and the two adapters 3 are detachably connected through the connecting fastener 5, so as to realize the simple, fast and firm connection between the two adapters 3, thereby facilitating the disassembly of the two adjacent conveying pipe sections 1.

[0056] Therefore, through the arrangement of the connecting bearing 4, the adapter 3 and the connecting fastener 5, the flexible and reliable connection between the two adjacent conveying pipe sections 1 can be realized, and the flexible rotation of each conveying pipe section 1 can be realized, and the structure is simple and reliable.

[0057] Specifically, as shown in FIGS. 1 and 2, Figure 5 and Figure 6 four conveying pipe sections 1 are shown, and two adapters 3 are arranged at the connection positions of the two middle conveying pipe sections 1. The two middle conveying pipe sections 1 are connected to the two adapters 3 in a one-to-one correspondence, that is, the two conveying pipe sections 1 are respectively connected to one adapter 3, and the two adapters 3 of the two conveying pipe sections 1 are connected through a connecting fastener 5. In this way, the two conveying pipe sections 1 can be conveniently disassembled, and each conveying pipe section 1 is rotatably connected to the corresponding adapter 3 through a connecting bearing 4. In addition, the adapters 3 of the two middle conveying pipe sections 1 and the conveying pipe sections 1 at both sides are also connected through a connecting bearing 4. In this way, the two middle conveying pipe sections 1 can be flexibly rotated, and the connecting fastener 5 does not need to be disassembled.

[0058] In some embodiments, the connecting bearing 4 comprises a bearing inner ring 41 and a bearing outer ring 42 which are rotatably connected, the bearing inner ring 41 is fixedly connected with the conveying pipe segment 1, and the adapter 3 is fixedly connected with the bearing outer ring 42.

[0059] That is, the bearing inner ring 41 and the bearing outer ring 42 can rotate relative to each other, and the conveying pipe segment 1 can be rotated when the bearing inner ring 41 rotates, thereby realizing flexible rotation of the conveying pipe segment 1.

[0060] In actual design, the bearing inner ring 41 and the conveying pipe segment 1 can be connected by welding, and the adapter 3 and the bearing outer ring 42 can also be connected by welding, thereby improving the connection stability and reliability between the bearing inner ring 41 and the conveying pipe segment 1 and between the adapter 3 and the bearing outer ring 42, and realizing precise rotation.

[0061] In other embodiments, as shown in Figure 2 and Figure 3 , Figure 5 and Figure 6 , an oil seal 6 is arranged between the adapter 3 and the connecting bearing 4, and the oil seal 6 is located inside the adapter 3. Thus, the connecting bearing 4 is sealed, which can prevent the powder from entering the inside of the connecting bearing 4 and affecting the rotation of the connecting bearing 4, thereby affecting the rotation of the conveying pipe segment 1.

[0062] In some embodiments, as shown in Figure 1 and Figure 4 , the powder conveying pipeline 100 further comprises a support seat 8, and the conveying pipe segment 1 is rotatably supported on the support seat 8 through the rotating bearing 7, that is, the support seat 8 can support the rotating bearing 7 and the powder conveying pipeline 100, and the powder conveying pipeline 100 can rotate relative to the rotating bearing 7, thereby improving the rotation stability of the powder conveying pipeline 100, and the powder conveying pipeline 100 can remain stable during the powder conveying process, preventing it from deviating or violently shaking.

[0063] In some embodiments, the adjacent two conveying pipe segments 1 are detachably connected through the connecting quick clamps 5.

[0064] Specifically, as shown in Figure 1 , the adjacent two conveying pipe segments 1 are provided with the connecting quick clamps 5 and are connected through the connecting quick clamps 5. The adjacent two conveying pipe segments 1 can be quickly and simply firmly connected through the connecting quick clamps 5, and are convenient to disassemble and maintain.

[0065] In practice, as shown in Figure 1 , the connecting quick clamps 5 between the adjacent two conveying pipe segments 1 can be disassembled first, and then the conveying pipe segment 1 that needs to be rotated is rotated, thereby realizing the removal of the accumulated powder of the corresponding conveying pipe segment 1 and avoiding the blockage of the conveying pipe segment 1.

[0066] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A powder conveying duct, characterized by, The application relates to a powder conveying device, which comprises: at least one conveying pipe section, a powder conveying pipe cavity being formed in the conveying pipe section, powder inlets and outlets being formed at both ends of the conveying pipe section and communicating with the powder conveying pipe cavity, and one end of the conveying pipe section being adapted to form an air negative pressure; wherein the conveying pipe section is provided with a rotating part for rotating the conveying pipe section around the axis of the conveying pipe section.

2. The powder delivery conduit of claim 1, wherein, The application further comprises a driving member, the rotating part is configured as a driven structure, the driving member is in power connection with the driven structure, and the driving member is used for driving the driven structure to rotate the conveying pipe section.

3. The powder delivery conduit of claim 2, wherein, The rotating part is configured as a driven gear, the driven gear is fixed to the outer peripheral wall of the conveying pipe section, the output end of the driving member is provided with a driving gear, and the driving gear is in meshing transmission with the driven gear.

4. The powder delivery conduit of claim 1, wherein, The rotating part is configured as a rotating handle, and the rotating handle is protrudedly arranged on the outer peripheral wall of the conveying pipe section.

5. The powder delivery conduit of claim 1, wherein, The conveying pipe section is multiple, and two adjacent conveying pipe sections are detachably connected.

6. The powder delivery conduit of claim 5, wherein, An adapter is arranged between the two adjacent conveying pipe sections, one of the two conveying pipe sections is rotatably connected with the adapter through a connecting bearing, and the other of the two conveying pipe sections is detachably connected with the adapter through a connecting fastener.

7. The powder delivery conduit of claim 5, wherein, Two adapters are arranged between the two adjacent conveying pipe sections, the two conveying pipe sections are one-to-one connected with the two adapters, each of the conveying pipe sections is rotatably connected with the corresponding adapter through a connecting bearing, and the two adapters are detachably connected through a connecting fastener.

8. The powder delivery conduit of claim 6 or 7, wherein, The connecting bearing comprises a bearing inner ring and a bearing outer ring in rotating cooperation, the bearing inner ring is fixedly connected with the conveying pipe section, and the adapter is fixedly connected with the bearing outer ring. The adapter and the connecting bearing are provided with an oil seal.

9. The powder delivery conduit of claim 5, wherein, The application further comprises a supporting seat, and the conveying pipe section is rotatably supported on the supporting seat through a rotating bearing.

10. The powder delivery conduit of claim 5, wherein, The two adjacent conveying pipe sections are detachably connected through the connecting fastener.

Images