A pipe assembly and a carding machine
By setting up a turbulence structure on the cotton conveying pipe and adjusting the airflow distribution at the cotton inlet of the carding machine, the problem of vortex formation was solved, achieving uniform fiber settling and improved yarn quality, while reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU HONGDA NEW TEXTILE MACHINERY
- Filing Date
- 2025-06-09
- Publication Date
- 2026-06-02
AI Technical Summary
In the integrated carding and combing system of the textile industry, optimizing the airflow distribution at the cotton inlet of the first carding machine, avoiding eddy formation and ensuring uniform cotton drop, solves the problem of uneven distribution at the bottom of the cotton pad and increased weight unevenness caused by uneven airflow.
A turbulence-inducing structure, including a first protrusion and a chamfer, is installed on the cotton conveying pipe to adjust the airflow direction and speed, disrupt the vortex at the cotton inlet, and ensure uniform fiber settling.
By designing a turbulence structure, the uniformity of the cotton pad bottom is improved, the weight unevenness is reduced, the strength and consistency of the yarn are increased, and energy consumption is reduced.
Smart Images
Figure CN224313743U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of textile equipment technology, and more particularly to a pipe assembly and a carding machine. Background Technology
[0002] In the integrated cleaning and carding system of the textile industry, the coordinated operation of the cleaning equipment and the carding machine is a key link to ensure efficient and uniform processing of fiber raw materials. The integrated cleaning and carding equipment relies on the rapid flow of air to transport raw materials to subsequent processes; therefore, the study of airflow dynamics has always been one of the important topics in this field.
[0003] As the core equipment for fiber sliver formation, the carding machine blows raw materials into the cotton passage through the blower of the opening equipment, and then evenly falls into the cotton box through the inlet above the cotton box, forming a flat cotton pad. Subsequently, the cotton pad is carded and bundled into slivers, and finally wound into the cotton can by the coiler. However, in actual production, the control of airflow directly affects the conveying and distribution uniformity of raw materials. If the air speed is too low, the carding machines at the far end may experience material shortages due to insufficient raw material supply; while if the air speed is too high, the inlet of the first carding machine is prone to excessive airflow impact, causing the raw material to fail to fall smoothly into the cotton box, thus resulting in edge breakage.
[0004] The problem of uneven edge distribution is mainly manifested in the uneven distribution of cotton pads at the bottom, which directly affects the quality of the cotton sliver, leading to an increase in weight unevenness (weight unevenness) and ultimately affecting the quality of the yarn. Through airflow simulation analysis of the cotton path and the cotton inlet, it was found that when the high-speed airflow first arrives at the cotton inlet, it will form small vortices in a local area, causing the fibers to rotate and suspend at this point and unable to settle in time, thus resulting in uneven cotton dropping.
[0005] Therefore, optimizing the airflow distribution at the cotton inlet of the first carding machine, avoiding vortex formation, and ensuring uniform cotton drop has become a key issue that urgently needs to be addressed in the integrated cleaning and carding technology. Utility Model Content
[0006] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a pipe assembly and carding machine that can optimize the airflow distribution at the cotton inlet of the first carding machine, avoid vortex formation and ensure uniform cotton drop of raw materials.
[0007] This application provides the following technical solution:
[0008] In a first aspect, embodiments of this application provide a pipe assembly, the pipe assembly comprising:
[0009] cotton conveying pipeline
[0010] The cotton boxes of the carding machine are arranged on the cotton conveying pipe and are spaced apart along the extension direction of the cotton conveying pipe. Each cotton box is connected to the cotton conveying pipe and forms a cotton inlet.
[0011] A turbulence structure is provided on the same side upstream of the cotton inlet of at least the first-stage cotton box in the flow direction of the cotton conveying pipe. The turbulence structure can adjust the airflow in the corresponding cotton box to adjust the uniformity of cotton drop.
[0012] In some embodiments of the first aspect, the turbulence structure includes a first protrusion that protrudes from the front side of the cotton inlet of the cotton box, the first protrusion having a windward side and a leeward side, the slope of the windward side being lower than the slope of the leeward side.
[0013] In some embodiments of the first aspect, the distance between the first protrusion and the corresponding cotton inlet is L, and satisfies: 0≤L≤200mm.
[0014] In some embodiments of the first aspect, the slope of the windward side is A1, and satisfies: 10°≤A1≤45°;
[0015] The leeward side is a circular arc structure that is tangent to the slope of the windward side.
[0016] In some embodiments of the first aspect, at least the upstream side of the cotton inlet of the first-stage cotton box is provided with a first chamfer, the first chamfer forming the turbulence structure.
[0017] In some embodiments of the first aspect, the first chamfer is configured as any of the following: a circular arc chamfer, a right angle chamfer.
[0018] In some embodiments of the first aspect, the turbulence structure includes a second protrusion that protrudes from the inner sidewall of the cotton box on the upstream side of the cotton inlet.
[0019] In some embodiments of the first aspect, the cross-section of the second protrusion is configured as an arc structure.
[0020] In some embodiments of the first aspect, the second protrusion is provided with a second chamfer on the side opposite to the cotton inlet, and the second chamfer is a right-angle chamfer.
[0021] Secondly, embodiments of this application also provide a carding machine, the carding machine including the pipe assembly as described in any of the above embodiments.
[0022] The embodiments of this application have the following advantages:
[0023] This application provides a pipe assembly in which the airflow carrying fiber raw materials passes sequentially through the cotton box of a carding machine. A turbulence-disrupting structure (located on the same side upstream of the cotton inlet of the first-stage cotton box) alters the local airflow direction and velocity, disrupting any vortices that may form at the cotton inlet. By physically blocking or guiding the airflow, the turbulence-disrupting structure disperses the concentrated impact of the high-speed airflow, preventing the formation of rotating, suspended vortices at the cotton inlet, thus ensuring smooth fiber settling. The adjusted airflow allows the fibers to be more evenly dispersed within the cotton box, forming a smooth cotton layer and reducing edge breakage in the carding machine's output web.
[0024] The spacing design of the cotton boxes in the carding machine, combined with the turbulence structure, gradually balances the air pressure and wind speed within the pipes. The turbulence structure in the first-stage cotton box prioritizes stabilizing the initial airflow. In subsequent cotton boxes, because the airflow has already partially attenuated, no additional turbulence is needed to achieve uniform cotton dropping.
[0025] Therefore, by eliminating the eddy current at the cotton inlet, the uniformity of the cotton pad distribution at the bottom is significantly improved, reducing weight unevenness and ultimately enhancing the strength and consistency of the yarn. The turbulence structure can be adjusted in installation position or shape to suit different raw material characteristics (such as fiber length and density), adapting to varying production needs. Furthermore, it avoids redundant conveying or wasted fan power due to excessively high wind speeds, reducing system energy consumption.
[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1 This illustration shows a schematic structural diagram of a pipe assembly provided in one embodiment of the present application from one perspective;
[0029] Figure 2 A schematic diagram of a pipe assembly from one perspective is shown according to another embodiment of this application;
[0030] Figure 3 A schematic diagram of the structure of a pipe assembly provided in another embodiment of this application is shown from one perspective;
[0031] Figure 4 A schematic diagram of the structure of a pipe assembly according to another embodiment of this application is shown from one perspective;
[0032] Figure 5 A schematic diagram of the structure of a pipe assembly provided in another embodiment of this application is shown from one perspective.
[0033] Explanation of key component symbols:
[0034] 100-Cotton conveying pipe; 200-Cotton box; 210-Cotton inlet; 300-Breakthrough structure; 310-Windward side; 320-Leisure side; 400-Second protrusion; 410-Second chamfer. Detailed Implementation
[0035] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0036] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0037] 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 part; 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; they can refer to the internal communication of two components or the interaction 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.
[0038] 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.
[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0040] In related technologies, within the integrated cleaning and carding system of the textile industry, the coordinated operation of the cleaning equipment and the carding machine is a key link in ensuring efficient and uniform processing of fiber raw materials. The integrated cleaning and carding equipment relies on rapid airflow to transport raw materials to subsequent processes; therefore, the study of airflow dynamics has always been one of the important topics in this field.
[0041] As the core equipment in the spinning process of fiber sliver formation, the carding machine blows raw materials into the cotton passage through the blower of the opening equipment, and then evenly falls into the cotton box through the cotton inlet above the cotton box, forming a flat cotton layer. Subsequently, the cotton layer is carded, bundled into sliver, and finally wound and stacked in the sliver can by the coiler. However, in actual production, the control of airflow directly affects the conveying and distribution uniformity of raw materials. If the air speed is too low, the carding machine at the far end may experience insufficient cotton supply due to insufficient raw material supply; while if the air speed is too high, the cotton inlet of the first carding machine is prone to excessive airflow impact, causing the raw material to fail to fall smoothly into the cotton box, resulting in edge breakage of the output cotton layer. Edge breakage is mainly manifested as uneven distribution at the bottom of the cotton layer, which directly affects the quality of the cotton sliver, leading to an increase in weight unevenness (weight unevenness), and ultimately affecting the quality of the yarn. Through airflow simulation analysis of the cotton passage and inlet, it was found that when the high-speed airflow first arrives at the inlet, it forms small vortices in a localized area. This causes the fibers to rotate and suspend at these points, preventing them from settling in time, resulting in uneven inward cotton storage. Therefore, optimizing the airflow distribution at the inlet of the first carding machine, avoiding vortex formation, and ensuring uniform cotton drop has become a critical issue that urgently needs to be addressed in the integrated carding and cleaning technology.
[0042] As shown in Figures 1 to 5, to solve the above-mentioned technical problems, this application provides a pipe assembly, which includes a cotton conveying pipe 100, a carding machine cotton box 200, and a turbulence structure 300. At least two cotton boxes 200 are disposed on the cotton conveying pipe 100 and are spaced apart along the extension direction of the cotton conveying pipe 100. Each cotton box 200 is connected to the cotton conveying pipe 100 and forms a cotton inlet 210. In the flow direction of the cotton conveying pipe 100, a turbulence structure is disposed on the same side upstream of the cotton inlet 210 of at least the first-stage cotton box 200. The turbulence structure can adjust the airflow in the corresponding cotton box 200 to adjust the uniformity of cotton drop.
[0043] In these embodiments, the aim is to provide an improved duct assembly and carding machine that can effectively regulate the airflow distribution at the cotton inlet 210 of the first carding machine, prevent vortex formation, thereby improving the uniform distribution of fiber waste, improving the cotton layer forming quality, and enhancing the final yarn quality.
[0044] For example, the turbulence structure can be a deflector, a turbulence grille, an arc-shaped baffle, or other structural forms that can change the direction and speed of airflow. Its setting position and angle can be optimized and adjusted according to the actual airflow simulation results.
[0045] Optionally, the turbulence structure 300 can be detachably or adjustablely installed on the inner wall of the cotton conveying pipe 100 so as to be flexibly adjusted according to different fiber types, conveying speeds or production needs.
[0046] For example, in this embodiment, a turbulence structure 300 is provided upstream of the cotton inlet 210 of the cotton box 200. Of course, in other embodiments, a turbulence structure 300 may also be provided upstream of the cotton inlet 210 of other grades of cotton boxes 200, depending on the actual use, and no specific limitation is made here.
[0047] In other words, by setting a turbulence structure 300 upstream of the cotton inlet 210 of the first carding machine, the influence of high-speed airflow on the cotton inlet 210 area is effectively weakened, the conditions for the formation of local vortices are destroyed, and the fibers fall into the cotton box 200 more smoothly and evenly, thereby improving the uniformity and stability of the cotton pad, reducing the unevenness of the cotton sliver weight, and improving the yarn quality.
[0048] In other words, as the airflow carrying fiber raw materials passes through the multi-stage cotton boxes 200 sequentially within the cotton conveying pipe 100, the turbulence structure 300 (located on the same side upstream of the cotton inlet 210 of the first-stage cotton box 200) disrupts any vortices that may form at the cotton inlet 210 by altering the local airflow direction and speed. The turbulence structure 300 disperses the concentrated impact of the high-speed airflow through physical obstruction or guidance, preventing the formation of rotating, suspended vortices at the cotton inlet 210, thus ensuring smooth fiber settling. The adjusted airflow allows the fibers to be more evenly dispersed within the cotton box 200, forming a smooth cotton pad and reducing edge breakage.
[0049] The spacing design of the cotton boxes 200 of the carding machine, combined with the turbulence structure 300, balances the air pressure and wind speed within the pipeline in stages. The turbulence structure of the first-stage cotton box 200 prioritizes stabilizing the initial airflow. Subsequent cotton boxes 200, due to the partial attenuation of the airflow, can achieve uniform cotton dropping without additional turbulence.
[0050] Therefore, by eliminating the eddy current at the cotton inlet 210, the uniformity of the cotton layer distribution at the bottom is significantly improved, reducing weight unevenness and ultimately enhancing the strength and consistency of the yarn. The turbulence structure 300 can be adjusted in position or shape to suit different raw material characteristics (such as fiber length and density), adapting to varying production needs. Furthermore, it avoids redundant conveying or wasted fan power due to excessively high wind speeds, reducing system energy consumption.
[0051] In some embodiments, the turbulence structure 300 includes a first protrusion that protrudes upstream of the cotton inlet 210 of the first cotton box 200. The first protrusion has a windward side 310 and a leeward side 320, and the slope of the windward side 310 is lower than the slope of the leeward side 320.
[0052] In these embodiments, the turbulence structure 300 includes a first protrusion disposed on the inner wall of the cotton conveying pipe 100 in the upstream region of the cotton inlet 210 of the first-stage cotton box 200. The first protrusion partially protrudes from the inner wall of the cotton conveying pipe 100 toward the center of the pipe, forming a structure that guides and turbulents the airflow.
[0053] The first protrusion has a windward side 310 facing the direction of the incoming flow and a leeward side 320 facing away from the direction of the incoming flow. The windward side 310 has a gentler slope (i.e., a smaller angle of inclination), while the leeward side 320 has a steeper slope (i.e., a larger angle of inclination). This asymmetrical slope design effectively achieves the following technical effects:
[0054] Smooth transition of airflow: The windward side 310 adopts a lower slope, so that the high-speed airflow can rise smoothly along its surface when passing by, reducing direct impact and reducing local turbulence intensity;
[0055] Enhanced turbulence effect: The leeward side has a higher slope of 320, which quickly separates the airflow after it passes through, forming a controllable small-scale vortex area, which helps to disperse the large vortex that might have formed at the cotton inlet 210.
[0056] Improve fiber settling conditions: By using the above-mentioned airflow control methods, the fibers can more easily break away from the main airflow before entering the cotton box 200 and fall evenly into the cotton box 200, thereby improving the uniformity of the cotton layer and the quality of the cotton web formation.
[0057] For example, the first protrusion can be a geometric shape such as a triangle, trapezoid, or streamline, and its height, length, and installation angle can be optimized according to the actual conveying wind speed, fiber type, and CFD (Computational Fluid Dynamics) simulation results.
[0058] Furthermore, the first protrusion can be fixed to the inner wall of the cotton conveying pipe 100 in a detachable connection manner, which makes it easy to replace the turbulence structure 300 of different shapes or sizes according to process requirements, thereby improving the adaptability and adjustment flexibility of the equipment.
[0059] In some embodiments, the distance between the first protrusion and the corresponding cotton inlet 210 is L, and satisfies: 0≤L≤200mm.
[0060] In these embodiments, the effect is only noticeable within the aforementioned distance. When the first protrusion exceeds the aforementioned set distance, the airflow at the cotton inlet 210 will instead form another vortex, affecting the smooth descent of the raw material and reducing the cotton dropping effect.
[0061] For example, L is set to a value between 0mm and 200mm to ensure that the turbulence structure 300 can effectively regulate the flow state of the airflow before it enters the cotton inlet 210, while avoiding local airflow turbulence caused by being too close or weakening the turbulence effect by being too far.
[0062] By positioning the first protrusion within the aforementioned distance range, the following beneficial effects can be achieved:
[0063] Before the airflow enters the cotton inlet 210 area, it begins to guide and disturb it, so that the high-speed main airflow tends to be stable when it reaches the cotton inlet 210, reducing the probability of vortex formation, improving the efficiency and uniformity of fiber settling from the airflow, thereby improving the cotton pad forming quality and reducing the occurrence of "edge breaking".
[0064] In some embodiments, the slope of the windward side 310 is A1, and satisfies: 10°≤A1≤45°;
[0065] The leeward side 320 is an arc tangent to A1.
[0066] In some embodiments, the slope of the windward side 310 of the first protrusion is denoted as A1, which is defined as the angle between the surface of the windward side 310 and the axial direction of the cotton conveying pipe 100; the arc of the leeward side 320 is denoted as A2, which is defined as the arc tangent between the surface of the leeward side 320 and the axial direction of the cotton conveying pipe 100.
[0067] By setting the slope as described above, the following technical effects can be achieved:
[0068] The gentler slope (31° A1) on the windward side helps the airflow transition smoothly along its surface, reducing impact and localized turbulence. The steeper slope (32° A2) on the leeward side causes the airflow to rapidly separate behind it, forming controllable small-scale vortices, disrupting the original large vortex structure and preventing fiber suspension and non-settling. A reasonable combination of slopes helps improve the uniformity of fiber deposition within the cotton box 200, thereby improving cotton pad quality and reducing weight unevenness.
[0069] In some embodiments, at least the upstream side of the cotton inlet 210 of the first-stage cotton box 200 is provided with a first chamfer, which forms a turbulence structure 300.
[0070] In these embodiments, the turbulence structure 300 is not limited to a separately provided protrusion, but can also be implemented by structurally modifying the cotton conveying pipe 100 in the upstream region of the cotton box 200 inlet 210. For example:
[0071] A first chamfer is provided on the upstream side of the cotton inlet 210 of the cotton box 200 of the carding machine. The chamfer extends obliquely from the inner wall of the cotton conveying pipe 100 toward the center of the pipe, forming a structural feature that has a disturbance and guiding effect on the airflow.
[0072] The first chamfer, as an integrated aerodynamic structure 300, serves the following purpose:
[0073] Change the airflow direction: guide the high-speed airflow to gradually deviate from its original axial path through the chamfered inclined surface, reducing its ability to directly impact the cotton inlet 210;
[0074] Weakening vortex intensity: The chamfered structure can effectively break up large-scale vortices in the airflow, preventing fibers from being unable to settle evenly due to rotational suspension at the cotton inlet 210.
[0075] Improve the uniformity of cotton falling: By using the above-mentioned airflow control methods, the fibers can be more smoothly separated from the main airflow and fall into the cotton box 200, thereby improving the forming quality of the cotton pad and reducing the occurrence of "edge breaking".
[0076] Furthermore, the first chamfer can be a continuous inclined structure or a discontinuous turbulence structure 300 composed of multiple segmented chamfers.
[0077] In some embodiments, the first chamfer is set to any of the following: a rounded chamfer or a right-angle chamfer.
[0078] In some embodiments, the turbulence structure 300 includes a second protrusion 400, which protrudes from the inner sidewall of the cotton inlet 210 of the first cotton box 200 on the upstream side.
[0079] In these embodiments, the turbulence structure 300 further includes a second protrusion 400 disposed on the inner wall of the cotton conveying pipe 100 on the upstream side of the cotton inlet 210 of the first cotton box 200 to optimize the airflow distribution at the cotton inlet 210.
[0080] The second protrusion 400 protrudes locally from the inner wall of the cotton inlet 210 toward the center of the cotton inlet 210. Its position is usually close to one side of the cotton conveying pipe 100. It is used to adjust the uniformity of airflow distribution on the cross-section of the pipe and prevent the airflow from deviating to one side, which would cause uneven fiber drop.
[0081] Preferably, the second protrusion 400 can be a strip-shaped, arc-shaped, or airfoil-shaped structure, and its height, length, and tilt angle can be designed according to the actual airflow conditions to achieve the following beneficial effects:
[0082] Improved lateral airflow distribution: By setting a second protrusion 400 on the inner wall of the pipe, the airflow can be guided to flow towards the central area of the pipe, reducing uneven fiber deposition caused by airflow deviation;
[0083] Enhanced turbulence synergy: When used in conjunction with the first protrusion or chamfered structure, the second protrusion 400 can exert turbulence on the airflow in different directions, thereby more comprehensively disrupting the conditions for vortex formation;
[0084] Improve fiber settling efficiency: By effectively controlling the main airflow, the fibers can more easily detach from the airflow and fall evenly into the cotton box 200, thereby improving the uniformity of cotton layer formation and reducing the cotton web breakage rate and uneven weight distribution.
[0085] Furthermore, the second protrusion 400 can be installed in a detachable or adjustable manner, which facilitates flexible replacement or adjustment according to different raw material types, wind speed settings or process requirements.
[0086] In some embodiments, the cross-section of the second protrusion 400 is configured as an arc structure.
[0087] In some embodiments, the second protrusion 400 is provided with a second chamfer 410 on the side opposite to the cotton inlet 210, and the second chamfer 410 is a right-angle chamfer.
[0088] In these embodiments, in order to further optimize the disturbance and guidance effect of the second protrusion 400 on the airflow and reduce the local turbulence intensity caused by the airflow separation behind it, a second chamfer 410 is provided on the side of the second protrusion 400 away from the cotton inlet 210. The second chamfer 410 is a structural feature that transitions from the edge of the second protrusion 400 to the inner wall of the cotton conveying pipe 100.
[0089] Preferably, the second chamfer 410 is a right-angle chamfer, that is, a 45° inclined transition surface is formed between the second protrusion 400 and the inner wall of the cotton conveying pipe 100. This structural design has the following technical effects:
[0090] Mitigating airflow impact and separation: The second chamfer 410 can effectively reduce the intensity of vortices caused by the sudden change in airflow at the trailing edge of the second protrusion 400, allowing the airflow to transition more smoothly;
[0091] Improve airflow stability: By smoothly connecting the transition area between the protrusion and the duct wall, local turbulence caused by geometric abrupt changes is avoided, thereby improving the uniformity and stability of the overall airflow field.
[0092] In some embodiments, this application also provides a carding machine, which includes any of the piping assemblies described in the above embodiments.
[0093] Since the aforementioned pipe assembly has the aforementioned technical effects, the carding machine including the pipe assembly should have the same technical effects, which will not be elaborated here.
[0094] In all examples shown and described herein, any specific values should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.
[0095] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0096] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.
Claims
1. A pipe assembly, characterized in that, The piping assembly includes: cotton conveying pipeline The cotton boxes of the carding machine are connected through the cotton conveying pipe and are spaced apart along the extension direction of the cotton conveying pipe. The cotton inlet of each cotton box is connected to the cotton conveying pipe. A turbulence structure is provided on the same side upstream of the cotton inlet of the cotton box of the carding machine in the flow direction of the cotton conveying pipe. The turbulence structure can adjust the airflow in the corresponding cotton box to adjust the uniformity of cotton falling from the cotton box.
2. The pipe assembly according to claim 1, characterized in that, The turbulence structure includes a first protrusion, which protrudes upstream of the cotton inlet of the cotton box of the carding machine. The first protrusion has a windward side and a leeward side, and the slope of the windward side is lower than the slope of the leeward side.
3. The pipe assembly according to claim 2, characterized in that, The distance between the first protrusion and the corresponding cotton inlet is L, and satisfies: 0≤L≤200mm.
4. The pipe assembly according to claim 2 or 3, characterized in that, The slope of the windward side is A1, and satisfies: 10°≤A1≤45°; The leeward side is a circular arc structure that is tangent to the slope of the windward side.
5. The pipe assembly according to claim 1, characterized in that, At least one side of the cotton inlet of the carding machine's cotton box is provided with a first chamfer, which forms the turbulence structure.
6. The pipe assembly according to claim 5, characterized in that, The first chamfer is set to any of the following: a rounded chamfer or a right-angle chamfer.
7. The pipe assembly according to claim 1, characterized in that, The turbulence structure includes a second protrusion, which protrudes from the inner sidewall of the cotton inlet of the first-stage cotton box.
8. The pipe assembly according to claim 7, characterized in that, The cross-section of the second protrusion is designed as a circular arc structure.
9. The pipe assembly according to claim 7 or 8, characterized in that, The second protrusion has a second chamfer on the side opposite to the cotton inlet, and the second chamfer is a right-angle chamfer.
10. A carding machine, characterized in that, The carding machine includes the tubing assembly as described in any one of claims 1 to 9.