Double-plate type static pressure chamber web cleaner

Abstract

The invention belongs to the technical field of textile equipment, relates to a double-plate type static pressure chamber web cleaner, and effectively solves the problem of poor impurity removal effect caused by inconsistent airflow velocity of an existing web cleaner by adopting a pressure stabilizing method of a static pressure chamber. The first front airflow baffle, the first middle airflow baffle and the first rear airflow baffle are arranged in the dust collection cover, so that airflow cannot vertically flow between the impurity removal opening and the air suction opening and must be bypassed for multiple times, the flow speed of the airflow is reduced, dynamic pressure is converted into static pressure, the static pressure of all points at the impurity removal opening is approximately the same, and the dust collection efficiency is improved. The uniformity of the velocity vector of the whole impurity removal opening is achieved, and the impurity removal efficiency and quality of the web cleaner are remarkably improved.

Description

Technical Field

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

[0002] The cotton web cleaner is a key component of the carding machine. Its main function is to remove defects such as neps and short fibers in the cotton web to ensure the quality of the cotton web and the quality of subsequent textiles. With the continuous development of textile technology, the full-fixed flat carding machine has received more and more attention and research because it can fully card and remove impurities, thereby achieving high quality and high yield.

[0003] In the fully fixed flat carding system, carding and impurity removal are two separate processes, in which impurity removal is completely dependent on the cotton web cleaner. Therefore, the uniformity of the velocity vector at the entrance of the cotton web cleaner is particularly important. However, most of the main cotton web cleaners on the market currently use the jet principle, that is, air supply and suction ports are set on both sides of the cotton web cleaner to form a jet field inside the cleaner. When the airflow flows at high speed in the dust cover of the cotton web cleaner, the air pressure of the suction slit below the area (i.e., the impurity removal port) will be lower than the atmospheric pressure, so that the impurities and short fibers in the high-speed carding area of ​​the cylinder cover will be pressed into the cotton web cleaner by the atmospheric pressure, thereby achieving the impurity removal effect.

[0004] However, this method has obvious defects. Since the airflow flows along the axial direction of the cotton mesh cleaner, there will be speed inconsistency in the axial direction of the cotton mesh cleaner. Specifically, the flow velocity is low and the negative pressure is small at the airflow inlet, while the flow velocity is high and the negative pressure is large at the outlet. This speed inconsistency will lead to differences in adsorption capacity on both sides, which may cause effective fibers to be sucked away at places with high speeds, while impurities cannot be completely sucked away at places with low speeds. In addition, the cotton mesh cleaner adopts a passive suction method, and the gas and impurities are passively drawn into the dust hood, so a large amount of power will be consumed by the jet, resulting in extremely low cotton cleaning efficiency. Summary of the invention

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

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

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

[0008] A first middle airflow baffle is provided between the front side plate and the rear side plate, the first middle airflow baffle is arranged horizontally, the air suction port is completely located in the area directly above the first middle airflow baffle, and the impurity removal port is completely located in the area directly below the first middle airflow baffle;

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

[0010] A first front airflow baffle and a first rear airflow baffle are also 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, and the gap c is located directly below the first middle airflow baffle.

[0011] As the preferred technical solution:

[0012] In the double-plate static pressure chamber cotton net cleaner as described above, the length of the impurity removal opening is the same as the length of the dust hood, and the value range is 1000-2000mm; the width of the impurity removal opening is 5-9mm.

[0013] In the double-plate static pressure chamber cotton web cleaner as described above, the front side plate and the rear side plate are both vertical plates and parallel to the left and right directions, and the distance between the front side plate and the rear side plate is 38.82-80 mm.

[0014] In the double-plate static pressure chamber cotton web cleaner as described above, the front side plate and the rear side plate are both rectangular vertical plates, and the upper ends and the lower ends are flush.

[0015] In the double-plate static pressure chamber cotton web cleaner as described above, the length L1 of the front side plate in the vertical direction is 50-150 mm; the length L2 of the portion of the front side plate located above the first middle airflow baffle in the vertical direction is 1 / 10-1 / 2 of L1;

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

[0017] The width of the gap 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, and the distance between it and the cylinder below will be controlled within the normal range of 0.2-0.9mm and the installation angle will be within the normal range of 85-105°. The dust removal knife only needs to ensure that the distance between it and the guide plate remains unchanged to control the size of the impurity removal opening;

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

[0020] In the double-plate static pressure chamber cotton web cleaner as described above, a second middle airflow baffle is further provided below the first front airflow baffle and the first rear airflow baffle, and the second middle airflow baffle has the same shape, size, and arrangement as the first middle airflow baffle, and the second middle airflow baffle is completely located in the area directly below the first middle airflow baffle;

[0021] A second front airflow baffle and a second rear airflow baffle are also provided below the second middle 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 completely located 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 completely located 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 / 10-2 / 15 of L1.

[0023] In the double-plate static pressure chamber cotton web cleaner as described above, a third middle airflow baffle is further provided below the second front airflow baffle and the second rear airflow baffle, and the third middle airflow baffle has the same shape, size, and arrangement as the first middle airflow baffle, and the third middle airflow baffle is completely located in the area directly below the first middle airflow baffle;

[0024] A third front airflow baffle and a third rear airflow baffle are also provided below the third middle airflow baffle. The third front airflow baffle has the same shape, size and arrangement as the first front airflow baffle. The third front airflow baffle is completely located in the area directly below the first front airflow baffle. The third rear airflow baffle has the same shape, size and arrangement as the first rear airflow baffle. The third rear airflow baffle is completely located 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] In the double-plate static pressure chamber cotton web cleaner as described above, a second airflow baffle is further provided above the first airflow baffle, the second airflow baffle is identical in shape, size and arrangement to the first airflow baffle, and the second airflow baffle is completely located in the area directly above the first airflow baffle;

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

[0028] A second front airflow baffle and a second rear airflow baffle are further 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. The second front airflow baffle is completely located 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 completely located in the area directly below the first rear airflow baffle.

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

[0030] In the double-plate static pressure chamber cotton web cleaner as described above, a third airflow baffle is further provided above the second airflow baffle, and the third airflow baffle has the same shape, size, and arrangement as the first airflow baffle, and the third airflow baffle is completely located in the area directly above the first airflow baffle;

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

[0032] A third front airflow baffle and a third rear airflow baffle are further provided below the second front airflow baffle and the second rear airflow baffle. The third front airflow baffle has the same shape, size and arrangement as the first front airflow baffle. The third front airflow baffle is completely located in the area directly below the first front airflow baffle. The third rear airflow baffle has the same shape, size and arrangement as the first rear airflow baffle. The third rear airflow baffle is completely located in the area directly below the first rear airflow baffle.

[0033] The distance D9 between the third front air flow baffle and the second front air flow baffle along the vertical direction or the distance D9 between the third rear air flow baffle and the second rear air flow baffle along the vertical direction is 1 / 10-1 / 4 of L1.

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

[0035] In the double-plate static pressure chamber cotton net cleaner as described above, the air suction port is located in the middle of the cover plate; the air suction port is circular, oval or square; and the area of ​​the air suction port is 3000-8000mm².

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

[0037] Principle of the invention:

[0038] The double-plate static pressure chamber cotton net cleaner proposed in the present invention adopts the pressure stabilization method of the static pressure chamber, and a first middle airflow baffle is provided in the dust cover of the cotton net cleaner. Since "the first middle airflow baffle is horizontally arranged, the air suction port is completely located in the area directly above the first middle airflow baffle, and the impurity removal port is completely located in the area directly below the first middle airflow baffle", "a gap a of equal width is left between the first middle airflow baffle and the front side plate, and a gap b of equal width is left between the first middle airflow baffle and the rear side plate", "a first front airflow baffle and a first rear airflow baffle are also provided between the front side plate and the rear side plate, and the first front airflow baffle and the first rear airflow baffle are both 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 the two, and the 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 suction port, and 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 the gap a and the gap b is 0.85-5.25 times the width of the impurity removal port, and the widths of the gap a and the gap b are the same", that is, the widths of the gap a and the gap b are small, the flow velocity of the airflow is significantly reduced when bypassing the first middle airflow baffle, thereby causing the flow velocity of the airflow to gradually decrease in the vertical direction from the air suction port to the impurity removal port. It 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 the present invention utilizes the difference between the internal and external atmospheric pressures to allow the airflow and impurities to enter the system, so pressure stability is beneficial to the uniformity of the velocity vector of the entire impurity removal port. Since the "impurity removal ports are of equal width", the effect of uniform velocity vector of the entire impurity removal port can be achieved. If the "impurity removal ports are of unequal width", it will lead to uneven axial velocity, and the velocity on the side with a smaller width will be significantly greater than 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 arranges an air suction port at the top of the dust hood. The active adsorption mode can not only flexibly adjust the impurity removal process of different raw materials, but also can maximize the reduction of impurity removal air volume, thus meeting the requirements of energy saving and consumption reduction.

[0040] Beneficial effects:

[0041] (1) The present invention effectively solves the problem of poor impurity removal effect caused by inconsistent air flow velocity in the existing cotton net cleaner by adopting a pressure stabilization method of a static pressure chamber. The first front air flow baffle, the first middle air flow baffle and the first rear air flow baffle arranged in the dust hood prevent the air flow from flowing vertically between the impurity removal port and the air suction port, but must go around for multiple times, thereby reducing the air flow velocity and converting the dynamic pressure into static pressure, so that the static pressure at each point at the impurity removal port is approximately the same, achieving uniformity of the air flow velocity vector at the entire impurity removal port, and significantly improving the impurity removal efficiency and quality of the cotton net 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. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0044] Figure 2 It is a side structural schematic diagram of the double-plate static pressure chamber cotton web cleaner of the present invention;

[0045] Figure 3 It is a schematic diagram of the three-dimensional structure of a fully fixed cover plate cotton net cleaner;

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

[0047] Figure 5 This is the verification result of control group 1;

[0048] Figure 6 This is the verification result of control group 2;

[0049] Figure 7 Validation results of experimental group 2;

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

[0051] Fig. 9 This is the verification result of experimental group 4;

[0052] Fig.10 This is the verification result of experimental group 5;

[0053] Fig.11 This is the verification result of experimental group 6;

[0054] Fig.12 This is the verification result of experimental group 7;

[0055] Fig.13 This is the verification result of control group 3;

[0056] Fig.14 This is the verification result of experimental group 8;

[0057] Fig.15 This is the verification result of experimental group 9;

[0058] Fig.16 This is the verification result of experimental group 10;

[0059] Fig.17 This is the verification result of experimental group 11;

[0060] Fig.18 This is the verification result of experimental group 12;

[0061] Fig.19 This is the verification result of experimental group 13;

[0062] Fig. 20 This is the verification result of experimental group 14;

[0063] Fig.21 This is the verification result of experimental group 15;

[0064] Among them, 1 is the air suction port, 4 is the guide plate, 5 is the impurity removal port, 6 is the dust removal knife, and 8 is the first middle air flow baffle. DETAILED DESCRIPTION

[0065] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0066] A double-plate static pressure chamber cotton net cleaner, such as Figure 1 and Figure 2 As shown, it includes a dust hood, a dust removal knife 6, a guide plate 4, a first middle air flow baffle 8, a first front air flow baffle and a first rear air flow baffle;

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

[0068] The front side plate and the rear side plate are both rectangular vertical plates and parallel to the left and right directions; the upper ends of the front side plate and the rear side plate are flush, and the lower ends are flush; the length of the front side plate in the vertical direction is recorded as L1; the length of the part of the front side plate located on the upper side of the first middle air flow baffle 8 in the vertical direction is recorded as L2; ​​the cover plate is provided with an air inlet 1; the air inlet 1 is located in the middle of the cover plate;

[0069] like Figure 2As shown, the first middle air flow baffle 8, the first front air flow baffle and the first rear air flow baffle are all arranged between the front side plate and the rear side plate; the first middle air flow baffle 8 is arranged horizontally, and the air inlet 1 is completely located in the area directly above the first middle air flow baffle 8; a gap a of equal width is left between the first middle air flow baffle 8 and the front side plate, and a gap b of equal width is left between the first middle air flow baffle 8 and the rear side plate, and the widths of the gaps a and b are the same; the first front air flow baffle and the first rear air flow baffle are both arranged horizontally and are coplanar, the first front air flow baffle is connected to the front side plate, the first rear air flow baffle is connected to the rear side plate, and a gap c of equal width is left between the first front air flow baffle and the first rear air flow baffle, and the gap c is located directly below the first middle air flow baffle 8; the distance between the first front air flow baffle or the first rear air flow baffle and the first middle air flow baffle 8 in the vertical direction is recorded as D1;

[0070] The dust removal knife 6 is connected to the bottom of the rear side surface of the front side plate, and the guide plate 4 is connected to the bottom of the front side surface of the rear side plate. An impurity removal opening 5 of equal width is formed between the blade of the dust removal knife 6 and the guide plate 4. The impurity removal opening 5 is completely located in the area directly below the first middle airflow baffle 8; the length of the impurity removal opening 5 is the same as the length of the dust hood.

[0071] In order to prove that the double-plate static pressure chamber cotton web cleaner of the present invention can achieve uniformity of the velocity vector of the airflow at the impurity removal port in the process of removing cotton web defects, an experiment is conducted according to the following steps to verify:

[0072] (1) Use SolidWorks software to perform 3D modeling of a double-plate static pressure chamber cotton net cleaner;

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

[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) Fluent was used to perform simulation calculations to simulate the air flow velocity distribution inside the double-plate static pressure chamber cotton net cleaner. The simulation results were analyzed to obtain the verification results (i.e., the air flow velocity distribution at the impurity removal port of the double-plate static pressure chamber cotton net cleaner).

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

[0077] Experimental Group 1

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

[0079] The shape of the air inlet: round, with an area of ​​3000mm²;

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

[0081] Verification results are as follows Figure 4 shown.

[0082] Control group 1

[0083] Same as Experimental Group 1, except that the double-plate static pressure chamber cotton net cleaner was replaced by Figure 3 The fully fixed cover cotton web cleaner shown (JF333C1-100, Zhejiang Jinfeng Textile Machinery Co., Ltd.);

[0084] Verification results are as follows Figure 5 shown.

[0085] contrast Figure 4 , Figure 5 It can be seen that the uniformity of velocity distribution at the impurity removal port of the cotton mesh cleaner of the control group 1 is significantly poor. This is because the control group 1 uses a fully fixed cover cotton mesh cleaner, which has air inlet and air suction ports on both sides to form a jet field inside the cleaner; the jet forms velocity inconsistency in the axial direction of the cotton mesh cleaner, that is, the flow velocity is low and the negative pressure is small at the air flow inlet; the flow velocity is high and the negative pressure is large at the outlet, resulting in differences in adsorption capacity on both sides; this unevenness makes it easy for fibers on the side with high negative pressure to be sucked away, while it is difficult to effectively remove defects such as cotton knots and short fibers on the side with low negative pressure, resulting in significantly poor uniformity of air flow velocity distribution in the cotton mesh cleaner; in addition, the cotton mesh cleaner is a passive suction mode, and a large amount of power will be consumed by the jet, which further affects the uniformity of the air flow velocity.

[0086] Control group 2

[0087] Basically the same as experimental group 1, the only difference is that the widths of gap a and gap b are different, the width of gap a is 0.3 mm, and the width of gap b is 3.95 mm;

[0088] Verification results are as follows Figure 6 shown.

[0089] contrast Figure 4 and Figure 6It can be seen that the uniformity of velocity distribution at the impurity removal outlet of the cotton net cleaner of the control group 2 is significantly poor. This is because the widths of gap a and gap b in the control group 2 are different, resulting in inconsistent flow velocities on both sides of the airflow when bypassing the first airflow baffle, making it impossible to evenly convert dynamic pressure into static pressure, and then making it impossible to make the static pressure at each point at the impurity removal outlet approximately the same, ultimately making the uniformity of velocity distribution of the airflow in the cotton net cleaner significantly poor.

[0090] Experimental Group 2

[0091] Basically the same as experimental group 1, the only difference is that: a second middle airflow baffle is further provided below the first front airflow baffle and the first rear airflow baffle, the second middle airflow baffle has the same shape, size and arrangement as the first middle airflow baffle, and the second middle airflow baffle is completely located in the area directly below the first middle airflow baffle; a second front airflow baffle and a second rear airflow baffle are further provided below the second middle airflow baffle, the second front airflow baffle has the same shape, size and arrangement as the first front airflow baffle, and the second front airflow baffle is completely located 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, and the second rear airflow baffle is completely located in the area directly below the first rear airflow baffle; the distance between the second middle airflow baffle and the first front airflow baffle or the first rear airflow baffle in the vertical direction is recorded as D2, D2 is 15 mm, and the distance between the second middle airflow baffle and the second front airflow baffle or the second rear airflow baffle in the vertical direction is recorded as D3, D3 is 15 mm;

[0092] Verification results are as follows Figure 7 shown.

[0093] Experimental Group 3

[0094] Basically the same as experimental group 2, the only difference is that: a third middle airflow baffle is further provided 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, and the third middle airflow baffle is completely located in the area directly below the first middle airflow baffle; a third front airflow baffle and a third rear airflow baffle are further provided below the third middle airflow baffle, the third front airflow baffle has the same shape, size and arrangement as the first front airflow baffle, and the third front airflow baffle is completely located in the area directly 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 the third rear airflow baffle is completely located in the area directly below the first rear airflow baffle; the distance between the third middle airflow baffle and the second front airflow baffle or the second rear airflow baffle in the vertical direction is recorded as D4, D4 is 20 mm, and the distance between the third middle airflow baffle and the third front airflow baffle or the third rear airflow baffle in the vertical direction is recorded as D5, D5 is 15 mm;

[0095] Verification results are as follows Figure 8 shown.

[0096] Experimental Group 4

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

[0098] Verification results are as follows Fig. 9 shown.

[0099] Experimental Group 5

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

[0101] Verification results are as follows Fig.10 shown.

[0102] Experimental Group 6

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

[0104] Verification results are as follows Fig.11 shown.

[0105] Experimental Group 7

[0106] The shape of the cover plate: arc plate, the central angle of the arc is 180°;

[0107] The shape of the air inlet: oval, area 3000mm²;

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

[0109] Verification results are as follows Fig.12 shown.

[0110] Control group 3

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

[0112] Verification results are as follows Fig.13 shown.

[0113] contrast Fig.13 and Fig.12It can be seen that the uniformity of velocity distribution at the impurity removal outlet of the cotton net cleaner of the control group 3 is significantly poor. This is because the total width of the gap a and the gap b of the control group 3 is too large, which means that the width of the first air flow baffle in the front-to-back direction is too small, which makes the air flow less obstructed when bypassing the first air flow baffle, and the air flow velocity is not significantly reduced, and the dynamic pressure cannot be effectively converted into static pressure, resulting in large differences in static pressure at various points at the impurity removal outlet, making it difficult to achieve uniform velocity vector of the entire impurity removal outlet.

[0114] Experimental Group 8

[0115] The shape of the cover plate: arc plate, the central angle of the arc is 111°;

[0116] The shape of the air inlet: square, area 8000mm²;

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

[0118] Verification results are as follows Fig.14 shown.

[0119] Experimental Group 9

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

[0121] The shape of the air inlet: round, with an area of ​​3000mm²;

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

[0123] Verification results are as follows Fig.15 shown.

[0124] Experimental Group 10

[0125] Basically the same as experimental group 9, the only difference is that: a second middle airflow baffle is also provided above the first middle airflow baffle, and the second middle airflow baffle has the same shape, size and arrangement as the first middle airflow baffle, and the second middle airflow baffle is completely located in the area directly above the first middle airflow baffle; the distance between the second middle airflow baffle and the first middle airflow baffle in the vertical direction is recorded as D6, and D6 is 20mm; a second front airflow baffle and a second rear airflow baffle are also provided below the first front airflow baffle and the first rear airflow baffle, and the second front airflow baffle has the same shape, size and arrangement as the first front airflow baffle, and the second front airflow baffle is completely located in the area directly below the first front airflow baffle, and the second rear airflow baffle has the same shape, size and arrangement as the first rear airflow baffle, and the second rear airflow baffle is completely located in the area directly below the first rear airflow baffle; the distance between the second front airflow baffle and the first front airflow baffle in the vertical direction or the distance between the second rear airflow baffle and the first rear airflow baffle in the vertical direction is recorded as D7, and D7 is 10mm;

[0126] Verification results are as follows Fig.16 shown.

[0127] Experimental Group 11

[0128] Basically the same as experimental group 10, the only difference is that: a third middle airflow baffle is also provided above the second middle airflow baffle, the shape, size and arrangement of the third middle airflow baffle are the same as those of the first middle airflow baffle, and the third middle airflow baffle is completely located in the area directly above the first middle airflow baffle; the distance between the third middle airflow baffle and the second middle airflow baffle along the vertical direction is recorded as D8, and D8 is 30mm; a third front airflow baffle and a third rear airflow baffle are also provided below the second front airflow baffle and the second rear airflow baffle, the shape, size and arrangement of the third front airflow baffle are the same as those of the first front airflow baffle, and the third front airflow baffle is completely located in the area directly below the first front airflow baffle, and the shape, size and arrangement of the third rear airflow baffle are the same as those of the first rear airflow baffle, and the third rear airflow baffle is completely located in the area directly below the first rear airflow baffle; the distance between the third front airflow baffle and the second front airflow baffle along the vertical direction or the distance between the third rear airflow baffle and the second rear airflow baffle along the vertical direction is recorded as D9, and D9 is 20mm;

[0129] Verification results are as follows Fig.17 shown.

[0130] Experimental Group 12

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

[0132] Verification results are as follows Fig.18 shown.

[0133] Experimental Group 13

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

[0135] Verification results are as follows Fig.19 shown.

[0136] Experimental Group 14

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

[0138] Verification results are as follows Fig. 20 shown.

[0139] Experimental Group 15

[0140] The shape of the cover plate: arc plate, the central angle of the arc is 180°;

[0141] The shape of the air inlet: oval, with an area of ​​4000mm²;

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

[0143] Verification results are as follows Fig.21 shown.

[0144] from Figure 4 , Figure 7 to Figure 12 as well as Figure 14 to Figure 21 It can be seen that the velocity distribution uniformity at the miscellaneous opening of the double-plate cotton web cleaners of experimental groups 1 to 15 is excellent.

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

Claims

1. A double-plate static pressure chamber cotton web cleaner, comprising a dust hood, a dust removal knife (6) and a guide plate (4), wherein the length direction of the dust hood is parallel to the left-right direction, the dust hood comprises 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 surface of the front side plate, the guide plate (4) is connected to the bottom of the front side surface of the rear side plate, and a dust 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 provided with an air suction port (1); A first middle airflow baffle (8) is provided between the front side plate and the rear side plate, the first middle airflow baffle (8) is arranged horizontally, the air suction port (1) is completely located in the area directly above the first middle airflow baffle (8), and the impurity removal port (5) is completely located in the area directly below the first middle airflow baffle (8); A gap a of equal width is left between the first middle airflow baffle (8) and the front side plate, and a gap b of equal width is left between the first middle airflow baffle (8) and the rear side plate, the total width of the gap a and the gap b is 0.85-3.6 times the width of the impurity removal opening (5), and the width of the gap a and the gap b are the same; A first front airflow baffle and a first rear airflow baffle are also provided between the front side plate and the rear side plate. 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 plate, and the first rear airflow baffle is connected to the rear side plate. A gap c of equal width is left between the first front airflow baffle and the first rear airflow baffle, and the gap c is located directly below the first middle airflow baffle (8).

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

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

4. A double-plate static pressure chamber cotton web cleaner according to claim 3, characterized in that: The front side plate and the rear side plate are both rectangular vertical plates, and the upper ends and the lower ends are flush.

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

6. A double-plate static pressure chamber cotton web cleaner according to claim 5, characterized in that: A second middle airflow baffle is also provided below the first front airflow baffle and the first rear airflow baffle, the second middle airflow baffle having the same shape, size and arrangement as the first middle airflow baffle (8), and the second middle airflow baffle is completely located in the area directly below the first middle airflow baffle (8); A second front airflow baffle and a second rear airflow baffle are also provided below the second middle 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 completely located 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 completely located 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 / 10-2 / 15 of L1.

7. A double-plate static pressure chamber cotton web cleaner according to claim 6, characterized in that: A third middle airflow baffle is also provided below the second front airflow baffle and the second rear airflow baffle, the third middle airflow baffle having the same shape, size and arrangement as the first middle airflow baffle (8), and the third middle airflow baffle is completely located in the area directly below the first middle airflow baffle (8); A third front airflow baffle and a third rear airflow baffle are also provided below the third middle airflow baffle. The third front airflow baffle has the same shape, size and arrangement as the first front airflow baffle. The third front airflow baffle is completely located in the area directly below the first front airflow baffle. The third rear airflow baffle has the same shape, size and arrangement as the first rear airflow baffle. The third rear airflow baffle is completely located 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 web cleaner according to claim 5, characterized in that: A second airflow baffle is also provided above the first airflow baffle (8); the second airflow baffle has the same shape, size and arrangement as the first airflow baffle (8); the second airflow baffle is completely located in the area directly above the first airflow baffle (8); A distance D6 between the second middle airflow baffle and the first middle airflow baffle (8) in the vertical direction is 1 / 10 to 1 / 6 of L1; A second front airflow baffle and a second rear airflow baffle are further 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. The second front airflow baffle is completely located 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 completely located in the area directly below the first rear airflow baffle. The distance D7 between the second front airflow baffle and the first front airflow baffle along the vertical direction or the distance D7 between the second rear airflow baffle and the first rear airflow baffle along the vertical direction is 1 / 15-1 / 10 of L1.

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

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

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