Powder conveying assisting device

Abstract

The application provides a powder conveying assisting device, belonging to the technical field of PVC paste resin powder conveying, which comprises a blowing pipe, a fluid inlet and a fluid outlet. By introducing fluid into the air inlet channel, the fluid enters the fluid inlet hole from the air inlet channel, and then flows to the corresponding fluid ejection hole and is blown into the inside of the powder conveying pipe from the fluid ejection hole. The accumulated material on the inner wall of the powder conveying pipe is cleaned at the same time of conveying the powder, so as to ensure the continuous conveying of the powder. The fluid inlet hole and the fluid ejection hole are uniformly arranged in the length direction of the blowing pipe, so as to increase the action length of the fluid on the powder in the powder conveying pipe, thereby avoiding the aggregation of the powder in the powder conveying pipe on the inner wall of the powder conveying pipe, avoiding the bridging phenomenon caused by the wall-hanging powder, and further reducing the accumulated material in the powder conveying pipe, which is beneficial to improving the conveying efficiency of the powder in the powder conveying pipe.

Description

Technical Field

[0001] This application belongs to the field of PVC paste resin powder conveying technology, specifically relating to a powder conveying assist device. Background Technology

[0002] After prolonged operation, PVC paste resin powder conveying pipes can experience bridging, where the powder forms stable arched structures within the pipe, hindering its normal flow and causing blockages. This leads to material accumulation on the inner wall of the pipe, reducing conveying efficiency. Currently, periodic shutdowns are typically used for cleaning, but this method cannot fundamentally reduce the frequency of bridging, affecting the continuity of powder conveying and impacting overall production efficiency. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] In view of this, a powder conveying assist device is proposed according to an embodiment of this application, comprising:

[0005] The purge pipe has an air intake channel that runs through the purge pipe along its length.

[0006] The fluid inlet includes several fluid inlet holes, which are evenly spaced along the length of the purge pipe on the inner wall of the purge pipe and are connected to the air intake channel.

[0007] The fluid outlet includes several fluid ejection holes, which are evenly spaced on the outer wall of the purge pipe along its length. The fluid ejection holes are connected to the fluid inlet holes, and the fluid flows into the interior of the powder conveying pipe from the fluid ejection holes.

[0008] The fluid inlet hole and the fluid outlet hole are in one-to-one correspondence.

[0009] In one feasible implementation, the fluid inlet is arranged on the inner wall of the purge tube along a spiral trajectory, and the fluid inlet holes are arranged at equal intervals along the spiral trajectory of the fluid inlet.

[0010] The fluid outlet is located on the outer wall of the purge pipe along a spiral trajectory, and the fluid ejection holes are arranged at equal intervals along the spiral trajectory of the fluid outlet.

[0011] In one feasible implementation, the fluid outlet is located inside the powder conveying pipe so as to spray fluid into the powder conveying pipe through a fluid ejection hole.

[0012] In one feasible implementation, the purge pipe is rotatably connected inside the powder conveying pipe.

[0013] In one feasible implementation, the outer wall of the purge pipe is sealed to the wall of the powder conveying pipe.

[0014] In one feasible implementation, the purge pipe extends axially through the powder conveying pipe, with both ends of the purge pipe extending outside the powder conveying pipe.

[0015] In one feasible implementation, the powder conveying assist device further includes:

[0016] The drive assembly is connected to the purge pipe and drives the purge pipe to rotate relative to the powder conveying pipe.

[0017] In one feasible implementation, the purge pipe and the powder conveying pipe are coaxially arranged.

[0018] In one feasible implementation, the air intake passage and the purge pipe are arranged coaxially.

[0019] In one feasible implementation, the fluid ejection port and the corresponding fluid inlet port are connected to form a fluid channel, and the angle between the direction in which the fluid channel extends from the fluid inlet port to the fluid ejection port and the first direction is less than 90°.

[0020] The first direction refers to the flow direction of the powder in the powder conveying pipe.

[0021] The powder conveying assist device of this application has the following advantages compared with the prior art:

[0022] The powder conveying assist device provided in this application includes a purge pipe, a fluid inlet, and a fluid outlet. By introducing fluid into the air inlet channel, the fluid enters the fluid inlet hole from the air inlet channel, and then flows to the corresponding fluid outlet hole and is blown into the inside of the powder conveying pipe. While conveying the powder, the accumulated material on the inner wall of the powder conveying pipe is cleaned to ensure continuous powder conveying. By arranging the fluid inlet hole and the fluid outlet hole of the purge pipe evenly along their length, the action length of the fluid on the powder in the powder conveying pipe is increased, thereby preventing the powder in the powder conveying pipe from accumulating on the inner wall of the powder conveying pipe and avoiding the bridging phenomenon caused by powder adhering to the wall. This reduces the accumulation of material in the powder conveying pipe and helps to improve the conveying efficiency of the powder in the powder conveying pipe. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0024] Figure 1A schematic structural diagram of a powder conveying assist device according to an embodiment of this application;

[0025] Figure 2 A schematic structural diagram illustrating the working operation of a powder conveying assist device according to an embodiment of this application;

[0026] Figure 3 A schematic structural diagram of a powder conveying assist device according to an embodiment of this application after it has been deployed;

[0027] Figure 4 for Figure 1 Enlarged view of point A;

[0028] Figure 5 A schematic structural diagram of a powder conveying assist device installed in a powder conveying pipe according to an embodiment of this application;

[0029] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0030] 11. Purge pipe; 12. Air inlet channel; 13. Fluid inlet; 14. Fluid outlet; 15. Powder conveying pipe; 16. Drive assembly; 17. Fluid channel;

[0031] 130. Fluid inlet hole; 140. Fluid outlet hole. Detailed Implementation

[0032] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0036] like Figure 1 and Figure 2 As shown in the embodiment of this application, a powder conveying assist device is proposed, comprising: a purge pipe 11, a fluid inlet 13, and a fluid outlet 14; an air inlet channel 12 is provided inside the purge pipe 11, the air inlet channel 12 extending through the purge pipe 11 along its length; the fluid inlet 13 includes a plurality of fluid inlet holes 130, which are equally spaced on the inner wall of the purge pipe 11 along its length, and the fluid inlet holes 130 communicate with the air inlet channel 12; the fluid outlet 14 includes a plurality of fluid ejection holes 140, which are equally spaced on the outer wall of the purge pipe 11 along its length, and the fluid ejection holes 140 communicate with the fluid inlet holes 130, and fluid flows into the interior of the powder conveying pipe 15 from the fluid ejection holes 140; wherein, the fluid inlet holes 130 and the fluid ejection holes 140 correspond one-to-one.

[0037] The powder conveying assist device provided in this application includes a purge pipe 11, a fluid inlet 13, and a fluid outlet 14. By introducing fluid into the air inlet channel 12, the fluid enters the fluid inlet hole 130 from the air inlet channel 12, and then flows to the corresponding fluid outlet hole 140 and is blown into the powder conveying pipe 15 from the fluid outlet hole 140. While conveying the powder, the accumulated material on the inner wall of the powder conveying pipe 15 is cleaned to ensure continuous conveying of the powder. By arranging the fluid inlet hole 130 and the fluid outlet hole 140 and the purge pipe 11 evenly in the length direction, the action length of the fluid on the powder in the powder conveying pipe 15 is increased, thereby avoiding the accumulation of powder on the inner wall of the powder conveying pipe 15, avoiding the bridging phenomenon caused by powder hanging on the wall, and thus reducing the accumulation of material in the powder conveying pipe 15, which is beneficial to improving the conveying efficiency of the powder in the powder conveying pipe 15.

[0038] Furthermore, if the fluid is a gas, when the fluid is a gas, the gas is sprayed into the powder conveying pipe 15 through the fluid ejection hole 140. This reduces the phenomenon of powder sticking to the wall of the powder conveying pipe 15 without contaminating or wetting the powder, thus avoiding material accumulation.

[0039] In some examples, the fluid can also be a liquid, which is sprayed through the fluid nozzle 140 to clean the powder conveying pipe 15 when it is necessary to clean it; then, the fluid is switched to hot air to dry the powder conveying pipe 15.

[0040] like Figures 1 to 3 As shown, in one feasible embodiment, the fluid inlet 13 is arranged on the inner wall of the purge pipe 11 along a spiral trajectory, and the fluid inlet holes 130 are arranged at equal intervals along the spiral trajectory of the fluid inlet 13; the fluid outlet 14 is arranged on the outer wall of the purge pipe 11 along a spiral trajectory, and the fluid ejection holes 140 are arranged at equal intervals along the spiral trajectory of the fluid outlet 14.

[0041] In this technical solution, the fluid ejection holes 140 are arranged in a spiral structure on the outer wall of the purge pipe 11 to purge the wall of the powder conveying pipe 15 in all directions through the fluid ejection holes 140, thereby increasing the contact area between the fluid and the wall of the powder conveying pipe 15 and improving the removal effect of accumulated material in the powder conveying pipe 15. The fluid inlet holes 130 are arranged in a spiral structure on the inner wall of the purge pipe 11, and the fluid inlet holes 130 correspond one-to-one with the fluid ejection holes 140, so that the fluid in the air intake channel 12 flows evenly into each fluid inlet hole 130, thereby making the fluid ejection volume of each fluid ejection hole 140 more uniform, avoiding excessive local flow velocity of powder, and thus making the flow velocity of powder in all parts of the powder conveying pipe 15 more uniform, which is conducive to the uniform conveying of powder, thereby helping to further reduce the bridging phenomenon in the powder conveying pipe 15 and alleviate the accumulation of material in the powder conveying pipe 15.

[0042] In some examples, when cleaning the powder conveying pipe 15, the spiral structure of the fluid inlet holes 130 and fluid outlet holes 140 enables a more uniform distribution of liquid and hot drying gas, thereby improving the cleaning and drying efficiency and effectiveness of the powder conveying pipe 15.

[0043] It should be noted that, Figure 4 The diagram shows the unfolded structure of the purge tube 11 after it has been cut along its length. The spiral structure unfolds as the cylindrical surface of the purge tube 11 unfolds into multiple parallel straight lines.

[0044] like Figure 2 As shown, in one possible embodiment, the fluid outlet 14 is located inside the powder conveying pipe 15 to spray fluid into the powder conveying pipe 15 through the fluid ejection port 140.

[0045] In this technical solution, the fluid ejection hole 140 is located inside the powder conveying pipe 15. The fluid ejected from the fluid ejection hole 140 directly and omnidirectionally acts on the inner wall of the powder conveying pipe 15, thereby improving the cleaning effect on the accumulated material on the inner wall of the powder conveying pipe 15.

[0046] like Figure 5 As shown, in one feasible embodiment, the purge pipe 11 is rotatably connected to the inside of the powder conveying pipe 15.

[0047] In this technical solution, the purge pipe 11 is rotatably disposed inside the powder conveying pipe 15 so that each fluid ejection hole 140 can rotate relative to the inner wall of the powder conveying pipe 15, avoiding single-point spray cleaning and further increasing the spray range of a single fluid ejection hole 140. Combined with the spiral structure arrangement of the fluid ejection holes 140, all-round purging of the inner wall of the powder conveying pipe 15 is achieved, thereby enhancing the cleaning effect on the inner wall of the powder conveying pipe 15.

[0048] In one feasible implementation, the outer wall of the purge pipe 11 is sealed to the wall of the powder conveying pipe 15.

[0049] In this technical solution, the connection between the purge pipe 11 and the powder conveying pipe 15 is sealed to ensure that the installation of the purge pipe 11 will not cause leakage in the powder conveying pipe 15, thus ensuring the normal conveying of powder in the powder conveying pipe 15, ensuring the conveying efficiency of powder, and preventing the working environment from being polluted.

[0050] Specifically, a pneumatic sealing gasket is provided between the outer wall of the purge pipe 11 and the pipe wall of the powder conveying pipe 15.

[0051] like Figure 5 As shown, in one feasible embodiment, the purge pipe 11 passes through the powder conveying pipe 15 along the axial direction of the powder conveying pipe 15, and both ends of the purge pipe 11 extend outside the powder conveying pipe 15.

[0052] In this technical solution, the purge pipe 11 passes through the powder conveying pipe 15 axially, so that the purge pipe 11 is parallel to the area of ​​the powder conveying pipe 15 it passes through, so that the fluid ejected from the fluid ejection hole 140 will not disturb the normal conveying of the powder during the rotation of the purge pipe 11; by extending both ends of the purge pipe 11 outside the distribution pipe, it is convenient to connect a device that drives the purge pipe 11 to rotate outside the powder conveying pipe 15, and at the same time, it is convenient to introduce fluid into the air inlet channel 12 outside the powder conveying pipe 15.

[0053] Furthermore, fluid is introduced from the end of the air intake channel 12 so that the fluid enters from the air intake channel 12 into several fluid inlet holes 130 on the inner wall of the purge pipe 11.

[0054] like Figure 5 As shown, in one feasible embodiment, the powder conveying assist device further includes a drive assembly 16, which is connected to the purge pipe 11 and drives the purge pipe 11 to rotate relative to the powder conveying pipe 15.

[0055] In this technical solution, the drive assembly 16 is disposed outside the powder conveying pipe 15, and the drive assembly 16 is connected to the purge pipe 11 exposed outside the powder conveying pipe 15 to drive the purge pipe 11 to rotate relative to the powder conveying pipe 15.

[0056] In some examples, the drive assembly 16 includes a drive motor, a gear, and a gear ring. The drive motor is mounted outside the powder conveying pipe 15, the gear is mounted on the output shaft of the drive motor, and the gear ring is arranged circumferentially on the outer wall of the purge pipe 11. The gear ring meshes with the gear to drive the gear ring and the purge pipe 11 to rotate synchronously.

[0057] like Figure 2 As shown, in one feasible embodiment, the purge pipe 11 and the powder conveying pipe 15 are coaxially arranged.

[0058] In this technical solution, the axial direction of the purge pipe 11 coincides with the axis of the powder conveying pipe 15, so that the purge pipe 11 is located at the center of the radial section of the powder conveying pipe 15, thereby making the purging effect of the fluid ejection hole 140 more consistent and helping to maintain the uniform flow of powder in the powder conveying pipe 15.

[0059] like Figures 1 to 3 As shown, in one feasible embodiment, the air intake passage 12 and the purge pipe 11 are coaxially arranged.

[0060] In this technical solution, the fluid ejection port 140 is connected to the corresponding fluid inlet port 130 to form a fluid channel 17. The air inlet channel 12 is coaxially arranged with the purge pipe 11 so that the included angle between the axes of each fluid channel 17 and the air inlet channel 12 is consistent, thereby making the fluid flow rate from the air inlet channel 12 into each fluid inlet port 130 more uniform, thereby further improving the uniformity of the fluid sprayed from each fluid ejection port 140.

[0061] like Figure 3 and Figure 5 As shown, in one feasible embodiment, the fluid ejection port 140 is connected to the corresponding fluid inlet port 130 to form a fluid channel 17. The direction in which the fluid channel 17 extends from the fluid inlet port 130 to the fluid ejection port 140 is at an angle of less than 90° with the first direction. The first direction is the flow direction of the powder in the powder conveying pipe 15.

[0062] In this technical solution, the angle between the flow direction of the fluid in the fluid channel 17 and the mainstream direction of the powder in the powder channel is an acute angle, so as to use the sprayed fluid to accelerate the flow rate of the powder in the powder conveying pipe 15, thereby improving the conveying efficiency of the powder.

[0063] It will be readily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.

[0064] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A powder conveying assist device, characterized in that, The powder conveying assist device includes: A purge pipe, wherein an air inlet channel is provided inside the purge pipe and the air inlet channel extends through the purge pipe along its length. The fluid inlet includes a plurality of fluid inlet holes, which are equally spaced along the length of the purge pipe on the inner wall of the purge pipe and are connected to the air intake channel. The fluid outlet includes a plurality of fluid ejection holes, which are equally spaced along the length of the purge pipe on the outer wall of the purge pipe. The fluid ejection holes are connected to the fluid inlet holes, and the fluid flows into the interior of the powder conveying pipe from the fluid ejection holes. The fluid inlet hole and the fluid outlet hole correspond one-to-one.

2. The powder conveying assist device according to claim 1, characterized in that, The fluid inlet is arranged on the inner wall of the purge tube along a spiral trajectory, and the fluid inlet holes are arranged at equal intervals along the spiral trajectory of the fluid inlet. The fluid outlet is located on the outer wall of the purge pipe along a spiral trajectory, and the fluid ejection holes are arranged at equal intervals along the spiral trajectory of the fluid outlet.

3. The powder conveying assist device according to claim 2, characterized in that, The fluid outlet is located inside the powder conveying pipe so as to spray fluid into the powder conveying pipe through the fluid ejection hole.

4. The powder conveying assist device according to claim 3, characterized in that, The purging pipe is rotatably connected inside the powder conveying pipe.

5. The powder conveying assist device according to claim 4, characterized in that, The outer wall of the purging pipe is sealed to the wall of the powder conveying pipe.

6. The powder conveying assist device according to claim 5, characterized in that, The purge pipe extends through the powder conveying pipe along its axial direction, with both ends of the purge pipe extending outside the powder conveying pipe.

7. The powder conveying assist device according to claim 6, characterized in that, The powder conveying assist device also includes: A drive assembly is connected to the purge pipe, and the drive assembly drives the purge pipe to rotate relative to the powder conveying pipe.

8. A powder conveying assist device according to any one of claims 1 to 7, characterized in that, The purging pipe is coaxially arranged with the powder conveying pipe.

9. A powder conveying assist device according to claim 8, characterized in that, The air intake channel is coaxially arranged with the purge pipe.

10. A powder conveying assist device according to claim 9, characterized in that, The fluid ejection port and the corresponding fluid inlet port are connected to form a fluid channel, and the angle between the direction in which the fluid channel extends from the fluid inlet port to the fluid ejection port and the first direction is less than 90°. Wherein, the first direction is the flow direction of the powder in the powder conveying pipe.

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