A twin plate type static pressure chamber web cleaner

Abstract

The application belongs to the technical field of textile equipment and relates to a double-plate type static pressure chamber web cleaner. By adopting the static pressure chamber pressure stabilizing method, the problem of poor impurity removal effect caused by inconsistent airflow speed of the existing web cleaner is effectively solved. The first front airflow baffle, the first middle airflow baffle and the first rear airflow baffle are arranged in the dust suction cover, so that the airflow cannot flow vertically between the impurity removal opening and the air suction opening, but must flow around multiple times, thereby reducing the flow speed of the airflow and converting the dynamic pressure into static pressure, so that the static pressures of all points at the impurity removal opening are approximately the same, the uniformity of the speed vector of the entire impurity removal opening is realized, and the impurity removal efficiency and quality of the web cleaner are significantly improved.

Description

Technical Field

[0001] This invention belongs to the field of textile equipment technology and relates to a double-plate static pressure chamber cotton web cleaner. Background Technology

[0002] The cotton web cleaner is a key component of a carding machine. Its main function is to remove defects such as neps and short fibers from the cotton web to ensure the quality of the web and subsequent textile products. With the continuous development of textile technology, the fully fixed-flat carding machine has received increasing attention and research because it can fully card the cotton web while also removing impurities, thus achieving high quality and high output.

[0003] In a fully fixed-mask carding system, carding and impurity removal are two separate processes, with impurity removal relying entirely on the web cleaner. Therefore, the uniformity of the velocity vector at the web cleaner's inlet is particularly important. However, most web cleaners currently on the market employ a jet principle, which involves placing air intake and suction ports on both sides of the cleaner to create a jet field inside. When the airflow travels at high speed through the web cleaner's suction hood, the air pressure at the suction slit below the area (i.e., the impurity removal port) is lower than atmospheric pressure. This forces impurities and short fibers from the high-speed carding area of ​​the cylinder into the web cleaner, achieving the impurity removal effect.

[0004] However, this method has significant drawbacks. Because the airflow moves axially along the web cleaner, an inconsistency in velocity occurs along this axis. Specifically, the airflow velocity is low and the negative pressure is low at the inlet, while the velocity is high and the negative pressure is high at the outlet. This velocity inconsistency leads to differences in adsorption capacity on both sides, potentially resulting in effective fibers being drawn away in areas with higher velocity, while impurities are not completely removed in areas with lower velocity. Furthermore, this web cleaner uses a passive suction method; gas and impurities are passively drawn into the suction hood, thus consuming a large amount of power in the jet, resulting in extremely low cleaning efficiency. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art and provide a double-plate static pressure chamber cotton mesh cleaner.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A double-plate static pressure chamber cotton mesh cleaner includes a dust suction hood, a dust removal knife, and a guide plate. The length direction of the dust suction hood is parallel to the left and right direction. The dust suction hood includes a front side plate, a rear side plate, and a cover plate. The dust removal knife is connected to the bottom of the rear side of the front side plate, and the guide plate is connected to the bottom of the front side of the rear side plate. An equal-width impurity removal port is formed between the blade of the dust removal knife and the guide plate. An air suction port is provided on the cover plate.

[0008] A first airflow baffle is provided between the front side panel and the rear side panel. The first airflow baffle is arranged horizontally, and the air intake is located entirely above the first airflow baffle, while the debris removal port is located entirely below the first airflow baffle.

[0009] A gap a of equal width is left between the first airflow baffle and the front side plate, and a gap b of equal width is left between the first airflow baffle and the rear side plate. The total width of gaps a and b is 0.85-3.6 times the width of the impurity removal port, and the widths of gaps a and b are the same.

[0010] A first front airflow baffle and a first rear airflow baffle are provided between the front side panel and the rear side panel. The first front airflow baffle and the first rear airflow baffle are both arranged horizontally and are coplanar. The first front airflow baffle is connected to the front side panel, and the first rear airflow baffle is connected to the rear side panel. A gap c of equal width is left between the first front airflow baffle and the first rear airflow baffle. The gap c is located directly below the first middle airflow baffle.

[0011] As a preferred technical solution:

[0012] As described above, the length of the impurity removal port is the same as the length of the dust hood, ranging from 1000 to 2000 mm; the width of the impurity removal port is 5 to 9 mm.

[0013] As described above, the double-plate static pressure chamber cotton mesh cleaner has a front plate and a rear plate that are both vertical and parallel to the left and right directions, with a distance of 38.82-80mm between the front plate and the rear plate.

[0014] As described above, the double-plate static pressure chamber cotton mesh cleaner has rectangular vertical plates for both the front and rear sides, with the top and bottom ends flush.

[0015] As described above, the length L1 of the front plate in the vertical direction is 50-150mm; the length L2 of the portion of the front plate located above the first airflow baffle in the vertical direction is 1 / 10-1 / 2 of L1.

[0016] The vertical distance D1 between the first front airflow baffle or the first rear airflow baffle and the first middle airflow baffle is 1 / 10-1 / 3 of L1.

[0017] The width of slit c is 1.42-10.25 times the width of the impurity removal opening;

[0018] The vertical length of the dust removal knife will be adjusted according to the production process. It is sufficient to control the distance between it and the cylinder below to be within the normal range of 0.2-0.9mm and the installation angle to be within the normal range of 85-105°. The size of the dust removal opening can be controlled by ensuring that the distance between the dust removal knife and the guide plate remains unchanged.

[0019] The length of the deflector in the vertical direction only needs to be controlled within a reasonable range (5-50mm).

[0020] As described above, a double-plate static pressure chamber cotton mesh cleaner is provided below the first front airflow baffle and the first rear airflow baffle. The second airflow baffle has the same shape, size and arrangement as the first airflow baffle. The second airflow baffle is located entirely in the area directly below the first airflow baffle.

[0021] Below the second airflow baffle, there is also a second front airflow baffle and a second rear airflow baffle. The second front airflow baffle is the same as the first front airflow baffle in shape, size and arrangement. The second front airflow baffle is located entirely in the area directly below the first front airflow baffle. The second rear airflow baffle is the same as the first rear airflow baffle in shape, size and arrangement. The second rear airflow baffle is located entirely in the area directly below the first rear airflow baffle.

[0022] The vertical distance D2 between the second middle airflow baffle and the first front airflow baffle or the first rear airflow baffle is 1 / 10 of L1, and the vertical distance D3 between the second middle airflow baffle and the second front airflow baffle or the second rear airflow baffle is 1 / 10 to 2 / 15 of L1.

[0023] As described above, a double-plate static pressure chamber cotton mesh cleaner is provided with a third middle airflow baffle below the second front airflow baffle and the second rear airflow baffle. The third middle airflow baffle has the same shape, size and arrangement as the first middle airflow baffle. The third middle airflow baffle is located entirely in the area directly below the first middle airflow baffle.

[0024] Below the third airflow baffle, there are also a third front airflow baffle and a third rear airflow baffle. The third front airflow baffle is the same as the first front airflow baffle in shape, size and arrangement. The third front airflow baffle is located entirely in the area directly below the first front airflow baffle. The third rear airflow baffle is the same as the first rear airflow baffle in shape, size and arrangement. The third rear airflow baffle is located entirely in the area directly below the first rear airflow baffle.

[0025] The vertical distance D4 between the third middle airflow baffle and the second front airflow baffle or the second rear airflow baffle is 2 / 15 of L1, and the vertical distance D5 between the third middle airflow baffle and the third front airflow baffle or the third rear airflow baffle is 1 / 10 of L1.

[0026] As described above, a double-plate static pressure chamber cotton mesh cleaner has a second airflow baffle above the first airflow baffle. The second airflow baffle has the same shape, size, and arrangement as the first airflow baffle, and the second airflow baffle is located entirely above the area directly above the first airflow baffle.

[0027] The vertical distance D6 between the second airflow baffle and the first airflow baffle is 1 / 10 - 1 / 6 of L1;

[0028] Below the first front airflow baffle and the first rear airflow baffle, there is also a second front airflow baffle and a second rear airflow baffle. The second front airflow baffle has the same shape, size and arrangement as the first front airflow baffle. The second front airflow baffle is located entirely in the area directly below the first front airflow baffle. The second rear airflow baffle has the same shape, size and arrangement as the first rear airflow baffle. The second rear airflow baffle is located entirely in the area directly below the first rear airflow baffle.

[0029] The vertical distance D7 between the second front airflow baffle and the first front airflow baffle or between the second rear airflow baffle and the first rear airflow baffle is 1 / 15 to 1 / 10 of L1.

[0030] As described above, a double-plate static pressure chamber cotton mesh cleaner is provided with a third airflow baffle above the second airflow baffle. The third airflow baffle has the same shape, size and arrangement as the first airflow baffle, and the third airflow baffle is located entirely in the area directly above the first airflow baffle.

[0031] The vertical distance D8 between the third airflow baffle and the second airflow baffle is 1 / 10 - 1 / 5 of L1;

[0032] Below the second front airflow baffle and the second rear airflow baffle, there are also a third front airflow baffle and a third rear airflow baffle. The third front airflow baffle is the same as the first front airflow baffle in shape, size and arrangement. The third front airflow baffle is located entirely in the area directly below the first front airflow baffle. The third rear airflow baffle is the same as the first rear airflow baffle in shape, size and arrangement. The third rear airflow baffle is located entirely in the area directly below the first rear airflow baffle.

[0033] The vertical distance D9 between the third front airflow baffle and the second front airflow baffle, or between the third rear airflow baffle and the second rear airflow baffle, is 1 / 10 to 1 / 4 of L1.

[0034] As described above, the cover plate of the double-plate static pressure chamber cotton mesh cleaner is a flat plate; or, the cover plate is an arc plate with a central angle of 111-180°.

[0035] As described above, in a double-plate static pressure chamber cotton mesh cleaner, the air inlet is located in the center of the cover plate; the air inlet is round, oval, or square; and the area of ​​the air inlet is 3000-8000 mm².

[0036] In the double-plate static pressure chamber cotton mesh cleaner described above, the thickness of the first middle airflow baffle, the first front airflow baffle, and the first rear airflow baffle are all 1-5mm.

[0037] Invention principle:

[0038] The double-plate static pressure chamber cotton web cleaner proposed in this invention employs a static pressure chamber stabilization method. A first intermediate airflow baffle is provided within the dust suction hood of the cotton web cleaner. Because "the first intermediate airflow baffle is horizontally arranged, the air intake is completely located in the area directly above the first intermediate airflow baffle, and the debris removal outlet is completely located in the area directly below the first intermediate airflow baffle," "a gap of equal width 'a' is left between the first intermediate airflow baffle and the front side plate, and a gap of equal width 'b' is left between the first intermediate airflow baffle and the rear side plate," and "a first front airflow baffle and a first rear airflow baffle are also provided between the front and rear side plates, both of which are horizontally arranged and coplanar, the first front airflow..." The baffle is connected to the front side plate, and the first rear airflow baffle is connected to the rear side plate, with a gap c of equal width between them. Gap c is located directly below the first middle airflow baffle. Therefore, the airflow cannot flow vertically between the impurity removal port and the air intake port; it must first bypass the first front airflow baffle and the first rear airflow baffle, and then bypass the first middle airflow baffle. Since "the total width of gaps a and b is 0.85-5.25 times the width of the impurity removal port, and gaps a and b have the same width," meaning the widths of gaps a and b are relatively small, the airflow velocity decreases significantly when bypassing the first middle airflow baffle. Consequently, the airflow velocity gradually decreases vertically from the air intake port towards the impurity removal port. The pressure is converted into static pressure, and the static pressure at each point at the impurity removal port is approximately the same. The entire system of this invention utilizes the difference between the internal and external atmospheric pressure to allow airflow and impurities to enter the system. Therefore, the stable pressure is conducive to the uniformity of the velocity vector of the entire impurity removal port. Since the "impurity removal port has equal width", the effect of uniform velocity vector of the entire impurity removal port can be achieved. If the "impurity removal port has unequal width", it will lead to uneven axial velocity. The velocity on the side with a smaller width will be significantly greater than that on the side with a larger width, and the effect of uniform velocity vector of the entire impurity removal port cannot be achieved.

[0039] The present invention features an air intake at the top of the dust collection hood. This active adsorption mode not only allows for flexible adjustment of the impurity removal process for different raw materials, but also minimizes the amount of air needed for impurity removal, thus meeting the requirements for energy saving and consumption reduction.

[0040] Beneficial effects:

[0041] (1) By adopting the pressure stabilization method of static pressure chamber, the present invention effectively solves the problem of poor impurity removal effect caused by inconsistent airflow velocity in existing cotton web cleaners. The first front airflow baffle, the first middle airflow baffle and the first rear airflow baffle set in the dust hood make the airflow unable to flow vertically between the impurity removal port and the air intake port, but must pass through multiple flow around, thereby reducing the airflow velocity and converting dynamic pressure into static pressure, so that the static pressure at each point at the impurity removal port is approximately the same, realizing the uniformity of the velocity vector of the airflow at the entire impurity removal port, and significantly improving the impurity removal efficiency and quality of the cotton web cleaner.

[0042] (2) The double-plate static pressure chamber cotton web cleaner of the present invention has the advantages of simple structure, convenient operation and strong applicability. It can be widely used in various carding machines, providing strong support for the technological progress and industrial upgrading of the textile industry. Attached Figure Description

[0043] Figure 1 This is a three-dimensional structural diagram of the double-plate static pressure chamber cotton mesh cleaner of the present invention;

[0044] Figure 2 This is a side view of the double-plate static pressure chamber cotton mesh cleaner of the present invention.

[0045] Figure 3 A three-dimensional structural diagram of a fully fixed cover plate and cotton mesh cleaner;

[0046] Figure 4 This is the verification result for experimental group 1;

[0047] Figure 5 This is the validation result for control group 1;

[0048] Figure 6 This is the validation result for control group 2;

[0049] Figure 7 The verification results of Experiment Group 2;

[0050] Figure 8 This is the verification result for experimental group 3;

[0051] Figure 9 This is the verification result for experimental group 4;

[0052] Figure 10 This is the verification result for experimental group 5;

[0053] Figure 11 This is the verification result for experimental group 6;

[0054] Figure 12 This is the verification result for experimental group 7;

[0055] Figure 13 This is the validation result for control group 3;

[0056] Figure 14 This is the verification result for experimental group 8;

[0057] Figure 15 This is the verification result for experimental group 9;

[0058] Figure 16 This is the verification result for experimental group 10;

[0059] Figure 17 This is the verification result for experimental group 11;

[0060] Figure 18 This is the verification result for experimental group 12;

[0061] Figure 19 This is the verification result for experimental group 13;

[0062] Figure 20 This is the verification result for experimental group 14;

[0063] Figure 21 This is the verification result for experimental group 15;

[0064] Among them, 1-air intake, 4-guide plate, 5-impurity removal port, 6-dust removal knife, 8-first intermediate airflow baffle. Detailed Implementation

[0065] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0066] A double-plate static pressure chamber cotton mesh cleaner, such as Figure 1 and Figure 2 As shown, it includes a dust suction hood, a dust removal blade 6, a deflector plate 4, a first middle airflow baffle 8, a first front airflow baffle, and a first rear airflow baffle;

[0067] like Figure 1 As shown, the length of the dust hood is parallel to the left and right direction, and the dust hood includes a front panel, a rear panel, and a cover.

[0068] Both the front and rear side panels are rectangular vertical panels parallel to the left and right directions; the upper and lower ends of the front and rear side panels are flush; the vertical length of the front side panel is denoted as L1; the vertical length of the portion of the front side panel located above the first airflow baffle 8 is denoted as L2; ​​an air intake 1 is provided on the cover plate; the air intake 1 is located in the center of the cover plate.

[0069] like Figure 2As shown, the first intermediate airflow baffle 8, the first front airflow baffle, and the first rear airflow baffle are all disposed between the front side plate and the rear side plate; the first intermediate airflow baffle 8 is horizontally arranged, and the air intake 1 is located entirely above the first intermediate airflow baffle 8; there is a gap a of equal width between the first intermediate airflow baffle 8 and the front side plate, and a gap b of equal width between the first intermediate airflow baffle 8 and the rear side plate, with gaps a and b having the same width; the first front airflow baffle and the first rear airflow baffle are both horizontally arranged and coplanar, the first front airflow baffle is connected to the front side plate, the first rear airflow baffle is connected to the rear side plate, and there is a gap c of equal width between the first front airflow baffle and the first rear airflow baffle, with gap c located directly below the first intermediate airflow baffle 8; the vertical distance between the first front airflow baffle or the first rear airflow baffle and the first intermediate airflow baffle 8 is denoted as D1;

[0070] The dust removal blade 6 is connected to the bottom of the rear side of the front side plate, and the guide plate 4 is connected to the bottom of the front side of the rear side plate. The blade of the dust removal blade 6 and the guide plate 4 form a dirt removal opening 5 of equal width. The dirt removal opening 5 is located directly below the first airflow baffle 8. The length of the dirt removal opening 5 is the same as the length of the dust collection hood.

[0071] To demonstrate that the double-plate static pressure chamber cotton web cleaner of the present invention can achieve uniformity of airflow velocity vector at the impurity removal port during the process of removing cotton web defects, experiments were conducted according to the following steps for verification:

[0072] (1) Use SolidWorks software to create a three-dimensional model of the double-plate static pressure chamber cotton web cleaner;

[0073] (2) Extract the fluid part from the three-dimensional model of the double-plate static pressure chamber cotton mesh cleaner through Boolean operation, and perform mesh segmentation on the extracted fluid part. The mesh size range is set to 0.006-0.06mm.

[0074] (3) Fluent was selected as the fluid dynamics simulation software, the improved pressure-coupled semi-implicit algorithm (SIMPLEC) was used as the solution method, and Realizable k-epsilon was used as the turbulence model;

[0075] (4) Use Fluent to perform simulation calculations to simulate the airflow velocity distribution inside the double-plate static pressure chamber cotton web cleaner, analyze the simulation results, and obtain the verification results (i.e., the velocity distribution of airflow at the impurity removal port of the double-plate static pressure chamber cotton web cleaner).

[0076] Based on steps (1) to (4), the setup and verification results of each experimental group and control group are as follows:

[0077] Experimental group 1

[0078] The shape of the cover plate: flat plate;

[0079] Air intake shape: circular, with an area of ​​3000mm²;

[0080] The distance between the front and rear side panels is 80mm, L1 is 150mm, L2 is 15mm, the thickness of the first front airflow baffle and the first rear airflow baffle is 5mm, the thickness of the first middle airflow baffle is 1mm, the total width of gaps a and b is 4.25mm, D1 is 50mm, the width of gap c is 51.25mm, the length of the impurity removal port is 1000mm, and the width of the impurity removal port is 5mm.

[0081] The verification results are as follows Figure 4 As shown.

[0082] Control group 1

[0083] Basically the same as Experimental Group 1, the only difference being that the double-plate static pressure chamber cotton mesh cleaner was replaced with... Figure 3 The fully fixed cover plate cotton web cleaner shown is (Zhejiang Jinfeng Textile Machinery Co., Ltd. JF333C1-100).

[0084] The verification results are as follows Figure 5 As shown.

[0085] contrast Figure 4 , Figure 5 It can be seen that the velocity distribution uniformity at the impurity removal port of the cotton web cleaner in control group 1 is significantly worse. This is because control group 1 uses a fully fixed cover cotton web cleaner, which has air inlets and suction ports on both sides, forming a jet field inside the cleaner. The jet creates a velocity inconsistency along the axial direction of the cotton web cleaner, that is, the airflow velocity is low and the negative pressure is small at the airflow inlet, while the airflow velocity is high and the negative pressure is large at the outlet, resulting in a difference in adsorption capacity on both sides. This inconsistency makes it easier for fibers to be sucked up on the side with high negative pressure, while it is difficult to effectively remove defects such as cotton knots and short fibers on the side with low negative pressure, thus causing a significant difference in the velocity distribution uniformity of the airflow inside the cotton web cleaner. In addition, this cotton web cleaner is a passive suction mode, and a large amount of power is consumed by the jet, which further affects the uniformity of the airflow velocity.

[0086] Control group 2

[0087] The results were basically the same as in Experiment 1, except that the widths of gaps a and b were different. The width of gap a was 0.3 mm, and the width of gap b was 3.95 mm.

[0088] The verification results are as follows Figure 6 As shown.

[0089] contrast Figure 4 and Figure 6It can be seen that the velocity distribution uniformity at the impurity removal port of the cotton web cleaner in control group 2 is significantly worse. This is because the widths of gaps a and b in control group 2 are different, which causes the airflow velocity on both sides to be inconsistent when the airflow passes around the first airflow baffle. This makes it impossible to uniformly convert dynamic pressure into static pressure, and thus impossible to make the static pressure at each point at the impurity removal port approximately the same. Ultimately, this results in a significantly worse velocity distribution uniformity of the airflow inside the cotton web cleaner.

[0090] Experimental group 2

[0091] The experiment is basically the same as Experiment 1, except that: a second intermediate airflow baffle is provided below the first front airflow baffle and the first rear airflow baffle. The second intermediate airflow baffle has the same shape, size, and arrangement as the first intermediate airflow baffle, and is located entirely below the first intermediate airflow baffle; a second front airflow baffle and a second rear airflow baffle are also provided below the second intermediate airflow baffle. The second front airflow baffle has the same shape, size, and arrangement as the first front airflow baffle, and is located entirely below the first front airflow baffle; the second rear airflow baffle has the same shape, size, and arrangement as the first rear airflow baffle, and is located entirely below the first rear airflow baffle; the vertical distance between the second intermediate airflow baffle and the first front airflow baffle or the first rear airflow baffle is denoted as D2, where D2 is 15mm; the vertical distance between the second intermediate airflow baffle and the second front airflow baffle or the second rear airflow baffle is denoted as D3, where D3 is 15mm.

[0092] The verification results are as follows Figure 7 As shown.

[0093] Experimental group 3

[0094] The experiment is basically the same as Experiment 2, except that: a third intermediate airflow baffle is provided below the second front airflow baffle and the second rear airflow baffle. The third intermediate airflow baffle has the same shape, size, and arrangement as the first intermediate airflow baffle, and is located entirely below the first intermediate airflow baffle; a third front airflow baffle and a third rear airflow baffle are also provided below the third intermediate airflow baffle. The third front airflow baffle has the same shape, size, and arrangement as the first front airflow baffle, and is located entirely below the first front airflow baffle; the third rear airflow baffle has the same shape, size, and arrangement as the first rear airflow baffle, and is located entirely below the first rear airflow baffle; the vertical distance between the third intermediate airflow baffle and the second front airflow baffle or the second rear airflow baffle is denoted as D4, where D4 is 20mm; the vertical distance between the third intermediate airflow baffle and the third front airflow baffle or the third rear airflow baffle is denoted as D5, where D5 is 15mm.

[0095] The verification results are as follows Figure 8 As shown.

[0096] Experimental group 4

[0097] Basically the same as experimental group 3, the only difference is that D2 is 15mm, D3 is 20mm, D4 is 15mm, and D5 is 15mm.

[0098] The verification results are as follows Figure 9 As shown.

[0099] Experimental group 5

[0100] Basically the same as experimental group 3, the only difference is that D2 is 15mm, D3 is 15mm, D4 is 15mm, and D5 is 20mm;

[0101] The verification results are as follows Figure 10 As shown.

[0102] Experimental group 6

[0103] Basically the same as experimental group 3, the only difference is that D2 is 15mm, D3 is 20mm, D4 is 15mm, and D5 is 15mm.

[0104] The verification results are as follows Figure 11 As shown.

[0105] Experimental group 7

[0106] The shape of the cover plate: an arc plate with a central angle of 180°;

[0107] The shape of the air intake is oval, with an area of ​​3000 mm².

[0108] The distance between the front and rear side panels is 38.82 mm, L1 is 50 mm, L2 is 16.67 mm, the thickness of the first front airflow baffle and the first rear airflow baffle is 1 mm, the thickness of the first middle airflow baffle is 1 mm, the total width of gap a and gap b is 18 mm, D1 is 7 mm, the width of gap c is 13.5 mm, the length of the impurity removal port is 1000 mm, and the width of the impurity removal port is 5 mm.

[0109] The verification results are as follows Figure 12 As shown.

[0110] Control group 3

[0111] Basically the same as experimental group 7, the only difference being that the total width of gap a and gap b is 37.82mm;

[0112] The verification results are as follows Figure 13 As shown.

[0113] contrast Figure 13 and Figure 12It can be seen that the velocity distribution uniformity at the impurity removal port of the cotton web cleaner in control group 3 is significantly worse. This is because the total width of gaps a and b in control group 3 is too large, which means that the width of the first airflow baffle in the front-back direction is too small. This reduces the obstruction encountered by the airflow when it passes around the first airflow baffle, and the airflow velocity does not decrease significantly. As a result, the dynamic pressure cannot be effectively converted into static pressure, leading to a large difference in static pressure at each point at the impurity removal port, making it difficult to achieve a uniform velocity vector throughout the entire impurity removal port.

[0114] Experimental group 8

[0115] The shape of the cover plate: an arc plate with a central angle of 111°;

[0116] Air intake shape: square, with an area of ​​8000mm²;

[0117] The distance between the front and rear side panels is 65.92 mm, L1 is 81 mm, L2 is 27 mm, the thickness of the first front airflow baffle and the first rear airflow baffle is 2 mm, the thickness of the first middle airflow baffle is 1 mm, the total width of gap a and gap b is 9 mm, D1 is 27 mm, the width of gap c is 18 mm, the length of the impurity removal port is 2000 mm, and the width of the impurity removal port is 9 mm.

[0118] The verification results are as follows Figure 14 As shown.

[0119] Experimental group 9

[0120] The shape of the cover plate: flat plate;

[0121] Air intake shape: circular, with an area of ​​3000mm²;

[0122] The distance between the front and rear side panels is 80mm, L1 is 150mm, L2 is 75mm, the thickness of the first front airflow baffle and the first rear airflow baffle is 5mm, the thickness of the first middle airflow baffle is 1mm, the total width of gaps a and b is 4.25mm, D1 is 15mm, the width of gap c is 51.25mm, the length of the impurity removal port is 1000mm, and the width of the impurity removal port is 5mm.

[0123] The verification results are as follows Figure 15 As shown.

[0124] Experimental group 10

[0125] The experiment is basically the same as Experiment Group 9, except that: a second airflow baffle is provided above the first airflow baffle. The second airflow baffle has the same shape, size, and arrangement as the first airflow baffle, and is located entirely above the first airflow baffle. The vertical distance between the second airflow baffle and the first airflow baffle is denoted as D6, which is 20mm. A second front airflow baffle and a second rear airflow baffle are provided below the first front airflow baffle and the first rear airflow baffle. The second front airflow baffle has the same shape, size, and arrangement as the first front airflow baffle, and is located entirely below the first front airflow baffle. Similarly, the second rear airflow baffle has the same shape, size, and arrangement as the first rear airflow baffle, and is located entirely below the first rear airflow baffle. The vertical distance between the second front airflow baffle and the first front airflow baffle, or between the second rear airflow baffle and the first rear airflow baffle, is denoted as D7, which is 10mm.

[0126] The verification results are as follows Figure 16 As shown.

[0127] Experimental group 11

[0128] The experimental group is basically the same as Experimental Group 10, except that: a third airflow baffle is provided above the second airflow baffle. The third airflow baffle has the same shape, size, and arrangement as the first airflow baffle, and is located entirely above the first airflow baffle. The vertical distance between the third airflow baffle and the second airflow baffle is denoted as D8, which is 30mm. Below the second front airflow baffle and the second rear airflow baffle, there are also a third front airflow baffle and a third rear airflow baffle. The third front airflow baffle has the same shape, size, and arrangement as the first front airflow baffle, and is located entirely below the first front airflow baffle. Similarly, the third rear airflow baffle has the same shape, size, and arrangement as the first rear airflow baffle, and is located entirely below the first rear airflow baffle. The vertical distance between the third front airflow baffle and the second front airflow baffle, or between the third rear airflow baffle and the second rear airflow baffle, is denoted as D9, which is 20mm.

[0129] The verification results are as follows Figure 17 As shown.

[0130] Experimental group 12

[0131] Basically the same as experimental group 11, the only difference is that D6 is 15mm, D7 is 15mm, D8 is 30mm, and D9 is 25mm;

[0132] The verification results are as follows Figure 18 As shown.

[0133] Experimental group 13

[0134] Basically the same as experimental group 11, the only difference is that D6 is 15mm, D7 is 15mm, D8 is 15mm, and D9 is 35mm;

[0135] The verification results are as follows Figure 19 As shown.

[0136] Experimental group 14

[0137] Basically the same as experimental group 11, the only difference is that D6 is 25mm, D7 is 15mm, D8 is 15mm, and D9 is 35mm;

[0138] The verification results are as follows Figure 20 As shown.

[0139] Experimental group 15

[0140] The shape of the cover plate: an arc plate with a central angle of 180°;

[0141] The shape of the air intake is oval, with an area of ​​4000 mm².

[0142] The distance between the front and rear side panels is 50mm, L1 is 120mm, L2 is 60mm, the thickness of the first front airflow baffle and the first rear airflow baffle is 1mm, the thickness of the first middle airflow baffle is 5mm, the total width of gaps a and b is 12.75mm, D1 is 12mm, the width of gap c is 12.75mm, the length of the impurity removal port is 1500mm, and the width of the impurity removal port is 9mm.

[0143] The verification results are as follows Figure 21 As shown.

[0144] from Figure 4 , Figures 7-12 as well as Figures 14-21 As can be seen from the data, the velocity distribution uniformity at the impurity outlet of the double-plate cotton web cleaners in experimental groups 1 to 15 is excellent.

[0145] The above verification process and results are sufficient to prove that the double-plate static pressure chamber cotton web cleaner of the present invention can achieve uniformity of airflow velocity vector at the impurity removal port during the process of removing cotton web defects.

Claims

1. A double-plate static pressure chamber cotton mesh cleaner, comprising a dust suction hood, a dust removal knife (6), and a guide plate (4), wherein the length direction of the dust suction hood is parallel to the left-right direction, the dust suction hood includes a front side plate, a rear side plate, and a cover plate, the dust removal knife (6) is connected to the bottom of the rear side of the front side plate, the guide plate (4) is connected to the bottom of the front side of the rear side plate, and a dirt removal opening (5) of equal width is formed between the blade of the dust removal knife (6) and the guide plate (4), characterized in that, The cover plate is equipped with an air intake (1); A first airflow baffle (8) is provided between the front side panel and the rear side panel. The first airflow baffle (8) is arranged horizontally. The air intake (1) is located entirely above the first airflow baffle (8), and the debris removal port (5) is located entirely below the first airflow baffle (8). A gap a of equal width is left between the first airflow baffle (8) and the front side plate, and a gap b of equal width is left between the first airflow baffle (8) and the rear side plate. The total width of gap a and gap b is 0.85-3.6 times the width of the impurity removal port (5), and the widths of gap a and gap b are the same. A first front airflow baffle and a first rear airflow baffle are provided between the front side panel and the rear side panel. The first front airflow baffle and the first rear airflow baffle are both arranged horizontally and are coplanar. The first front airflow baffle is connected to the front side panel, and the first rear airflow baffle is connected to the rear side panel. There is a gap c of equal width between the first front airflow baffle and the first rear airflow baffle. The gap c is located directly below the first middle airflow baffle (8).

2. The double-plate static pressure chamber cotton mesh cleaner according to claim 1, characterized in that, The length of the cleaning port (5) is the same as the length of the dust hood, and the value range is 1000-2000mm; the width of the cleaning port (5) is 5-9mm.

3. A double-plate static pressure chamber cotton mesh cleaner according to claim 1, characterized in that, Both the front and rear side panels are vertical panels and parallel to the left and right directions. The distance between the front and rear side panels is 38.82-80mm.

4. A double-plate static pressure chamber cotton mesh cleaner according to claim 3, characterized in that, Both the front and rear side panels are rectangular vertical panels, with the top and bottom edges flush.

5. A double-plate static pressure chamber cotton mesh cleaner according to claim 4, characterized in that, The length L1 of the front side plate in the vertical direction is 50-150mm; the length L2 of the part of the front side plate located above the first airflow baffle (8) in the vertical direction is 1 / 10-1 / 2 of L1; The vertical distance D1 between the first front airflow baffle or the first rear airflow baffle and the first middle airflow baffle (8) is 1 / 10-1 / 3 of L1; The width of the gap c is 1.42-10.25 times the width of the impurity removal port (5).

6. A double-plate static pressure chamber cotton mesh cleaner according to claim 5, characterized in that, Below the first front airflow baffle and the first rear airflow baffle, there is a second middle airflow baffle. The second middle airflow baffle has the same shape, size and arrangement as the first middle airflow baffle (8). The second middle airflow baffle is located directly below the first middle airflow baffle (8). Below the second airflow baffle, there is also a second front airflow baffle and a second rear airflow baffle. The second front airflow baffle is the same as the first front airflow baffle in shape, size and arrangement. The second front airflow baffle is located entirely in the area directly below the first front airflow baffle. The second rear airflow baffle is the same as the first rear airflow baffle in shape, size and arrangement. The second rear airflow baffle is located entirely in the area directly below the first rear airflow baffle. The vertical distance D2 between the second middle airflow baffle and the first front airflow baffle or the first rear airflow baffle is 1 / 10 of L1, and the vertical distance D3 between the second middle airflow baffle and the second front airflow baffle or the second rear airflow baffle is 1 / 10 to 2 / 15 of L1.

7. A double-plate static pressure chamber cotton mesh cleaner according to claim 6, characterized in that, Below the second front airflow baffle and the second rear airflow baffle, there is a third middle airflow baffle. The third middle airflow baffle has the same shape, size and arrangement as the first middle airflow baffle (8). The third middle airflow baffle is located directly below the first middle airflow baffle (8). Below the third airflow baffle, there are also a third front airflow baffle and a third rear airflow baffle. The third front airflow baffle is the same as the first front airflow baffle in shape, size and arrangement. The third front airflow baffle is located entirely in the area directly below the first front airflow baffle. The third rear airflow baffle is the same as the first rear airflow baffle in shape, size and arrangement. The third rear airflow baffle is located entirely in the area directly below the first rear airflow baffle. The vertical distance D4 between the third middle airflow baffle and the second front airflow baffle or the second rear airflow baffle is 2 / 15 of L1, and the vertical distance D5 between the third middle airflow baffle and the third front airflow baffle or the third rear airflow baffle is 1 / 10 of L1.

8. A double-plate static pressure chamber cotton mesh cleaner according to claim 5, characterized in that, Above the first airflow baffle (8) is a second airflow baffle. The second airflow baffle has the same shape, size and arrangement as the first airflow baffle (8). The second airflow baffle is located directly above the first airflow baffle (8). The vertical distance D6 between the second airflow baffle and the first airflow baffle (8) is 1 / 10-1 / 6 of L1; Below the first front airflow baffle and the first rear airflow baffle, there is also a second front airflow baffle and a second rear airflow baffle. The second front airflow baffle has the same shape, size and arrangement as the first front airflow baffle. The second front airflow baffle is located entirely in the area directly below the first front airflow baffle. The second rear airflow baffle has the same shape, size and arrangement as the first rear airflow baffle. The second rear airflow baffle is located entirely in the area directly below the first rear airflow baffle. The vertical distance D7 between the second front airflow baffle and the first front airflow baffle or between the second rear airflow baffle and the first rear airflow baffle is 1 / 15 to 1 / 10 of L1.

9. A double-plate static pressure chamber cotton mesh cleaner according to claim 8, characterized in that, Above the second airflow baffle, there is a third airflow baffle. The third airflow baffle has the same shape, size and arrangement as the first airflow baffle (8). The third airflow baffle is located directly above the first airflow baffle (8). The vertical distance D8 between the third airflow baffle and the second airflow baffle is 1 / 10 - 1 / 5 of L1; Below the second front airflow baffle and the second rear airflow baffle, there are also a third front airflow baffle and a third rear airflow baffle. The third front airflow baffle is the same as the first front airflow baffle in shape, size and arrangement. The third front airflow baffle is located entirely in the area directly below the first front airflow baffle. The third rear airflow baffle is the same as the first rear airflow baffle in shape, size and arrangement. The third rear airflow baffle is located entirely in the area directly below the first rear airflow baffle. The vertical distance D9 between the third front airflow baffle and the second front airflow baffle, or between the third rear airflow baffle and the second rear airflow baffle, is 1 / 10 to 1 / 4 of L1.

10. A double-plate static pressure chamber cotton mesh cleaner according to claim 4, characterized in that, The cover plate is a flat plate; or, the cover plate is an arc plate with a central angle of 111-180°.

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