Single plate type static pressure chamber cotton net cleaner

Abstract

The present invention belongs to the technical field of textile equipment, and relates to a single-plate static pressure chamber cotton web cleaner, including a dust hood, a dust removal knife and a guide plate. A horizontally arranged first airflow baffle is provided in the dust hood, and an air suction port is located directly above the airflow baffle, and a dust removal port is located directly below the airflow baffle; through innovative structural design, and precise control of the gap width between the first airflow baffle and the front and rear side plates, as well as the size of the dust removal port, the uniformity of the airflow velocity vector in the entire dust removal area is achieved. The present invention significantly improves the removal effect of cotton web defects and the cotton cleaning efficiency through the static pressure chamber design and active adsorption mode, reduces energy consumption, and also realizes flexible adjustment of the dust removal process for different fiber types.

Description

Technical Field

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

[0002] In the textile industry, the cotton web cleaner is a key component of the carding machine. Its main function is to remove defects such as cotton knots and short fibers in the cotton web to improve the quality of the cotton web and the quality of subsequent textiles.

[0003] like Figure 1 As shown in the figure, the conventional cotton web cleaner is a fully fixed cover cotton web cleaner, which is usually provided with air inlet and air suction ports on both sides to form a jet field inside the cleaner. The airflow sucked by the air suction port in this jet field flows along the axis direction of the cleaner, thereby forming a negative pressure field change in the axis direction. This negative pressure field change will generate negative pressure on the suction slit below (i.e., the impurity removal port), and then generate flow field adsorption on the high-speed combing area of ​​the cylinder cover, thereby removing the cotton web defects in this area. However, due to the inconsistency of the jet forming speed at the impurity removal port (i.e., the flow rate at the airflow inlet is low and the negative pressure is small; the flow rate at the outlet is high and the negative pressure is large), there is a difference in the adsorption capacity on both sides. Specifically, the fibers on the side with high negative pressure are easily sucked away, while it is difficult to effectively remove defects such as cotton knots and short fibers on the side with low negative pressure. This uneven cleaning effect not only reduces the manufacturing rate, but also makes it difficult to ensure good removal of defects. In addition, the cotton web cleaner adopts a passive entrainment mode, and a large amount of power is consumed by the jet, resulting in extremely low cotton cleaning efficiency.

[0004] In order to solve the above problems, the prior art has developed a cotton mesh cleaner with a variable cross-section channel, hoping to achieve a uniform distribution of the velocity vector of the airflow at the impurity removal port by changing the axial cross-section.

[0005] For example, patent application CN107460564A discloses an isobaric cotton mesh cleaner, in which the inner side edge of the guide plate is designed as a right-angle blade in a curved or oblique shape, and the inner edge of the dust removal knife is a straight edge. The two are installed correspondingly to form impurity removal openings of unequal widths.

[0006] For example, patent application CN103352278A discloses a cotton mesh cleaner, in which a dust absorption gap is formed between the dust removal knife and the guide plate. The size of the dust absorption gap varies evenly from large to small along the direction from the suction port to the air supply port, so as to ensure that the wind speed at the dust absorption gap from the suction port to the air supply port is uniform.

[0007] For another example, patent application CN110872733A discloses a cotton web cleaner with double-sided air supply ports, wherein two mutually perpendicular trapezoidal through holes with the same cross-section are provided on the front and inner sides of the guide plate and the dust removal knife along the length direction from the left air suction port to the right air supply port of the cotton web cleaner, so as to ensure that the air pressure distribution of the cotton web cleaner along the axis is uniform and the gradient is small, thereby achieving uniform distribution of the internal air pressure along the axis and the gradient is small, and ensuring that the fibers combed along the lateral surface of the cylinder are subjected to uniform suction.

[0008] However, the existing outlet exhaust technology is difficult to ensure a steady pressure state (back pressure is non-steady state), so it is difficult to obtain a fully steady state of variable cross-sectional flow velocity, and further difficult to achieve complete uniformity of the velocity vector of the airflow at the impurity removal outlet.

[0009] In addition, given the great uncertainty of the types of fibers processed by the carding machine (such as cotton, chemical fiber, flax, wool, etc.), these fibers have significantly different requirements for the carding process. When the change in fiber type leads to a change in the suction volume, simply adjusting the cross-sectional size of the impurity removal port cannot guarantee the uniformity of the air pressure at the impurity removal port. Summary of the invention

[0010] The purpose of the present invention is to solve the problems existing in the prior art and provide a single-plate static pressure chamber cotton net cleaner.

[0011] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0012] A single-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 recorded as 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;

[0013] A first airflow baffle is provided between the front side plate and the rear side plate. The first airflow baffle is arranged horizontally. The air suction port is completely located in the area directly above the first airflow baffle, and the impurity removal port is completely located in the area directly below the first airflow baffle.

[0014] A gap a of equal width is left between the first air flow baffle and the front side plate, and a gap b of equal width is left between the first air flow baffle and the rear side plate. 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.

[0015] As the preferred technical solution:

[0016] In the above-mentioned single-plate static pressure chamber cotton net cleaner, 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 5-15mm.

[0017] In the above-mentioned single-plate static pressure chamber cotton net cleaner, 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 40-80 mm.

[0018] In the above-mentioned single-plate static pressure chamber cotton web cleaner, the front side plate and the rear side plate are both rectangular vertical plates, and the upper ends and the lower ends are flush.

[0019] In the above-mentioned single-plate static pressure chamber cotton web cleaner, 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 air flow baffle in the vertical direction is 1 / 10-1 / 2 of L1;

[0020] 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;

[0021] The vertical length of the guide plate only needs to be controlled within a reasonable range (5-50 mm).

[0022] In a single-plate static pressure chamber cotton net cleaner as described above, a second air flow baffle is further provided below the first air flow baffle. The second air flow baffle has the same shape, size and arrangement as the first air flow baffle. The second air flow baffle is completely located in the area directly below the first air flow baffle. The distance D1 between the second air flow baffle and the first air flow baffle is 1 / 10-1 / 5 of L1.

[0023] In a single-plate static pressure chamber cotton net cleaner as described above, a third air flow baffle is also provided below the second air flow baffle. The third air flow baffle has the same shape, size and arrangement as the second air flow baffle. The third air flow baffle is completely located in the area directly below the second air flow baffle. The distance D2 between the third air flow baffle and the second air flow baffle is 1 / 10-1 / 5 of L1.

[0024] In the single-plate static pressure chamber cotton net cleaner as described above, a fourth airflow baffle is further provided below the third airflow baffle. The fourth airflow baffle has the same shape, size and arrangement as the third airflow baffle. The fourth airflow baffle is completely located in the area directly below the third airflow baffle. The distance D3 between the fourth airflow baffle and the third airflow baffle is 1 / 10-1 / 5 of L1.

[0025] In the single-plate static pressure chamber cotton net cleaner as described above, a fifth airflow baffle is also provided below the fourth airflow baffle. The fifth airflow baffle has the same shape, size and arrangement as the fourth airflow baffle. The fifth airflow baffle is completely located in the area directly below the fourth airflow baffle. The distance D4 between the fifth airflow baffle and the fourth airflow baffle is 1 / 10-1 / 5 of L1.

[0026] In the above-mentioned single-plate static pressure chamber cotton web cleaner, the cover plate is a flat plate; or the cover plate is an arc plate, and the central angle of the arc is 30-180°;

[0027] Alternatively, the cover plate is composed of a front top plate, a rear top plate, a left top plate, and a right top plate, the lower edge of the front top plate is connected to the upper edge of the front side plate, the upper edge of the front top plate is located behind the lower edge of the front top plate, the lower edge of the rear top plate is connected to the upper edge of the rear side plate, the upper edge of the rear top plate is located in front of the lower edge of the rear top plate, the two ends of the lower edge of the left top plate are respectively connected to the left ends of the upper edges of the front side plate and the rear side plate, the upper edge of the left top plate is located on the right side of the lower edge of the left top plate, the two ends of the lower edge of the right top plate are respectively connected to the right ends of the upper edges of the front side plate and the rear side plate, the upper edge of the right top plate is located on the left side of the lower edge of the right top plate, and the upper edges of the front top plate, the rear top plate, the left top plate, and the right top plate together form an air intake.

[0028] When there is an air flow baffle blocking the gas flow, the airflow in front of the air flow baffle will slow down due to the obstruction. However, on the side of the baffle, that is, the airflow passing through gap a and gap b, will be compressed, and its flow rate will increase, even exceeding the speed of the incoming flow. These accelerated airflows will enter the space above the air flow baffle and expand. If the airflow accumulates in this part of the space and cannot leave the system quickly, it will weaken the role of the air flow baffle in balancing the speed. When the cover plate is the last structure, it can provide a variable cross-sectional area channel. The airflow will be accelerated in this cross-sectional area convergent pipe, which makes it easier for the airflow to leave the system and avoid accumulation, thereby ensuring that the airflow of the entire system is more stable and efficient.

[0029] In the above-mentioned single-plate static pressure chamber cotton net cleaner, 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.

[0030] In the above-mentioned single-plate static pressure chamber cotton web cleaner, the thickness of the first airflow baffle is 1-5 mm.

[0031] Principle of the invention:

[0032] The single-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 air flow baffle is provided in the dust cover of the cotton net cleaner. Since "the first air flow baffle is horizontally arranged, the air suction port is completely located in the area directly above the first air flow baffle, and the impurity removal port is completely located in the area directly below the first air flow baffle" and "a gap a of equal width is left between the first air flow baffle and the front side plate, and a gap b of equal width is left between the first air flow baffle and the rear side plate", the airflow needs to bypass the first air flow baffle to flow from the air suction port to the impurity removal port; 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 relatively large. The airflow is small, so the flow velocity is significantly reduced when bypassing the first airflow baffle, which makes the flow velocity of the airflow gradually decrease from the air intake port to the impurity removal port in the vertical direction after bypassing the airflow baffle, and the dynamic 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 the present invention uses the difference between the internal and external atmospheric pressures to allow the airflow and impurities to enter the system, so the pressure stability is conducive to the uniformity of the velocity vector of the entire impurity removal port; due to the "equal width of the impurity removal ports", the effect of uniform velocity vector of the entire impurity removal port can be achieved, because if the "impurity removal ports are of unequal width", it will lead to uneven axial velocity, and the velocity of the side with a smaller width will be significantly greater than that of the side with a larger width, and the effect of uniform velocity vector of the entire impurity removal port cannot be achieved;

[0033] 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 fiber types, but also maximize the reduction of impurity removal air volume, thereby meeting the requirements of energy saving and consumption reduction.

[0034] Beneficial effects:

[0035] (1) The present invention provides a horizontally arranged first air flow baffle in the dust hood and accurately controls the widths of the gap a and the gap b, so that the flow velocity of the air flow is significantly reduced when bypassing the air flow baffle, and the dynamic pressure is converted into static pressure, thereby forming a uniform static pressure distribution at the impurity removal port. This design effectively avoids the problem of uneven negative pressure field caused by inconsistent jet velocity in traditional cotton net cleaners, ensures the consistency of negative pressure at the entire impurity removal port, and improves the cleaning effect of cotton net defects.

[0036] (2) The present invention adopts a pressure stabilization method of a static pressure chamber, which makes the velocity vector of the airflow at the impurity removal port more uniform, reduces power consumption, and thus improves the cotton cleaning efficiency. Compared with the traditional passive suction mode, the active adsorption mode of the present invention not only realizes flexible adjustment of the impurity removal process for different fiber types, but also maximizes the reduction of impurity removal air volume, meeting the requirements of energy saving and consumption reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a three-dimensional structural schematic diagram of a fully fixed cover plate cotton net cleaner;

[0038] Figure 2 It is a three-dimensional structural schematic diagram of the single-plate static pressure chamber cotton net cleaner of the present invention;

[0039] Figure 3 It is a side view structural schematic diagram of the single-plate static pressure chamber cotton web cleaner of the present invention;

[0040] Figure 4 This is the verification result of experimental group 1;

[0041] Figure 5 This is the verification result of experimental group 2;

[0042] Figure 6 This is the verification result of experimental group 3;

[0043] Figure 7 This is the verification result of experimental group 4;

[0044] Figure 8 This is the verification result of control group 1;

[0045] Fig. 9 This is the verification result of control group 2;

[0046] Fig.10 This is the verification result of control group 3;

[0047] Fig.11 This is the verification result of experimental group 6;

[0048] Fig.12 This is the verification result of experimental group 7;

[0049] Fig.13 This is the verification result of experimental group 8;

[0050] Fig.14 This is the verification result of experimental group 9;

[0051] Fig.15 This is the verification result of experimental group 10;

[0052] Fig.16 This is the verification result of experimental group 11;

[0053] Fig.17 This is the verification result of experimental group 12;

[0054] Fig.18 This is the verification result of experimental group 13;

[0055] Fig.19 This is the verification result of experimental group 14;

[0056] Fig. 20 This is the verification result of experimental group 15;

[0057] Fig.21 This is the verification result of experimental group 16;

[0058] Fig. 22 This is the verification result of experimental group 17;

[0059] Fig.23 This is the verification result of experimental group 18;

[0060] Fig.24 This is the verification result of experimental group 19;

[0061] Fig.25 It is a top view structural schematic diagram of the single-plate static pressure chamber cotton net cleaner of experimental group 2;

[0062] Fig.26 It is a schematic diagram of the three-dimensional structure of the single-plate static pressure chamber cotton net cleaner of the experimental group 2;

[0063] Fig. 27 It is a top view structural schematic diagram of the single-plate static pressure chamber cotton net cleaner of experimental group 17;

[0064] Fig.28 It is a three-dimensional structural schematic diagram of the single-plate static pressure chamber cotton net cleaner of the experimental group 17;

[0065] Fig.29 This is the verification result of experimental group 5;

[0066] Among them, 1-air suction port, 4-guide plate, 5-impurity removal port, 6-dust removal knife, 7-first air flow baffle, 8-front top plate, 9-rear top plate, 10-left top plate, 11-right top plate. DETAILED DESCRIPTION

[0067] 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.

[0068] A single plate type static pressure chamber cotton net cleaner, such as Figure 2 and Figure 3 As shown, it includes a dust hood, a dust removal knife 6, a guide plate 4 and a first air flow baffle 7;

[0069] like Figure 2 As shown, the length direction of the dust hood is recorded as the left-right direction, and the dust hood includes a front side plate, a rear side plate and a cover plate; the front side plate and the rear side plate are both rectangular vertical plates and are parallel to the left-right direction, and the upper and lower ends are flush;

[0070] like Figure 3As shown, the first air flow baffle 7 is horizontally arranged between the front side plate and the rear side plate; a gap a of equal width is left between the first air flow baffle 7 and the front side plate, and a gap b of equal width is left between the first air flow baffle 7 and the rear side plate, and the widths of the gap a and the gap b are the same;

[0071] An air suction port 1 is provided in the middle of the cover plate, and the air suction port 1 is completely located in the area directly above the first air flow baffle 7;

[0072] 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; a debris removal opening 5 of equal width is formed between the blade of the dust removal knife 6 and the guide plate 4; the debris removal opening 5 is completely located in the area directly below the first air flow baffle 7; the length of the debris removal opening 5 is the same as the length of the dust hood.

[0073] In order to prove that the single-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, an experiment is conducted according to the following steps to verify:

[0074] (1) Use SolidWorks software to perform 3D modeling of a single-plate static pressure chamber cotton net cleaner;

[0075] (2) The fluid part is extracted from the three-dimensional model of the single-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;

[0076] (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;

[0077] (4) Fluent was used to perform simulation calculations to simulate the air flow velocity distribution inside the single-plate static pressure chamber cotton mesh 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 single-plate static pressure chamber cotton mesh cleaner).

[0078] According to steps (1) to (4), the settings and verification results of each experimental group and control group are as follows:

[0079] Experimental Group 1

[0080] The shape of the cover plate: arc plate, the central angle of the arc is 104°;

[0081] The shape of the air inlet: round, with an area of ​​3000mm²;

[0082] The distance between the front side plate and the rear side plate is 80 mm, the length L1 of the front side plate in the vertical direction is 150 mm, the thickness of the first air flow baffle is 1 mm, the length L2 of the portion of the front side plate located above the first air flow baffle in the vertical direction is 75 mm, the length of the impurity removal opening is 1000 mm, the width of the impurity removal opening is 15 mm, and the total width of the gap a and the gap b is 12.75 mm;

[0083] Verification results such as Figure 4 shown.

[0084] Experimental Group 2

[0085] The same as experimental group 1, the only difference is: Fig.25 and Fig.26 As shown, the cover plate is composed of a front top plate 8, a rear top plate 9, a left top plate 10, and a right top plate 11. The lower edge of the front top plate 8 is connected to the upper edge of the front side plate, the upper edge of the front top plate 8 is located on the rear side of the lower edge of the front top plate 8, the lower edge of the rear top plate 9 is connected to the upper edge of the rear side plate, the upper edge of the rear top plate 9 is located on the front side of the lower edge of the rear top plate 9, the two ends of the lower edge of the left top plate 10 are respectively connected to the left ends of the upper edges of the front side plate and the rear side plate, the upper edge of the left top plate 10 is located on the right side of the lower edge of the left top plate 10, the two ends of the lower edge of the right top plate 11 are respectively connected to the right ends of the upper edges of the front side plate and the rear side plate, the upper edge of the right top plate 11 is located on the left side of the lower edge of the right top plate 11, and the upper edges of the front top plate 8, the rear top plate 9, the left top plate 10, and the right top plate 11 together form an air intake 1;

[0086] Verification results such as Figure 5 shown.

[0087] Experimental Group 3

[0088] The same as experimental group 1, except that: the length L2 of the portion of the front side plate located above the first airflow baffle in the vertical direction is 15 mm;

[0089] Verification results such as Figure 6 shown.

[0090] Experimental Group 4

[0091] The experimental group 1 is basically the same, and the only difference is that the single-plate static pressure chamber cotton net cleaner also includes a second air flow baffle, a third air flow baffle, a fourth air flow baffle and a fifth air flow baffle; the second air flow baffle is arranged below the first air flow baffle, and the second air flow baffle has the same shape, size and arrangement as the first air flow baffle, and the second air flow baffle is completely located in the area directly below the first air flow baffle; the third air flow baffle is arranged below the second air flow baffle, and the third air flow baffle has the same shape, size and arrangement as the second air flow baffle, and the third air flow baffle is completely located in the area directly below the second air flow baffle; the fourth air flow baffle is arranged in the third air flow Below the baffle, the fourth air flow baffle is the same as the third air flow baffle in shape, size, and arrangement, and the fourth air flow baffle is completely located in the area directly below the third air flow baffle; the fifth air flow baffle is arranged below the fourth air flow baffle, and the fifth air flow baffle is the same as the fourth air flow baffle in shape, size, and arrangement, and the fifth air flow baffle is completely located in the area directly below the fourth air flow baffle; the distance D1 between the second air flow baffle and the first air flow baffle, the distance D2 between the third air flow baffle and the second air flow baffle, the distance D3 between the fourth air flow baffle and the third air flow baffle, and the distance D4 between the fifth air flow baffle and the fourth air flow baffle are all 15 mm;

[0092] Verification results such as Figure 7 shown.

[0093] Control group 1

[0094] Same as Experimental Group 4, except that the single-plate static pressure chamber cotton net cleaner was replaced by Figure 1 The fully fixed cover cotton web cleaner shown (JF333C1-100, Zhejiang Jinfeng Textile Machinery Co., Ltd.);

[0095] Verification results such as Figure 8 shown.

[0096] contrast Figure 7 , Figure 8 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.

[0097] Control group 2

[0098] Basically the same as experimental group 4, the only difference is that the widths of gap a and gap b are different, the width of gap a is 0.1 mm, and the width of gap b is 12.64 mm;

[0099] The final verification results of control group 2 are as follows Fig. 9 shown.

[0100] contrast Figure 7 , Fig. 9 It can be seen that the uniformity of velocity distribution at the impurity removal outlet of the cotton mesh 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 mesh cleaner significantly poor.

[0101] Control group 3

[0102] Basically the same as experimental group 4, the only difference is that the total width of gap a and gap b is 79 mm;

[0103] Verification results such as Fig.10 shown.

[0104] contrast Figure 7 , Fig.10 It can be seen that the uniformity of velocity distribution at the impurity removal port 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 port, making it difficult to achieve uniform velocity vector of the entire impurity removal port.

[0105] Experimental Group 5

[0106] The same as experimental group 1, except that: the length L2 of the portion of the front side plate located above the first airflow baffle in the vertical direction is 30 mm;

[0107] Verification results such as Fig.29 shown.

[0108] Experimental Group 6

[0109] Basically the same as experimental group 5, the only difference is that: the single-plate static pressure chamber cotton net cleaner also includes a second air flow baffle, a third air flow baffle, a fourth air flow baffle and a fifth air flow baffle; the second air flow baffle is arranged below the first air flow baffle, and the second air flow baffle has the same shape, size and arrangement as the first air flow baffle, and the second air flow baffle is completely located in the area directly below the first air flow baffle; the third air flow baffle is arranged below the second air flow baffle, and the third air flow baffle has the same shape, size and arrangement as the second air flow baffle, and the third air flow baffle is completely located in the area directly below the second air flow baffle; the fourth air flow baffle is arranged below the third air flow baffle, The shape, size and arrangement of the fourth airflow baffle are the same as those of the third airflow baffle, and the fourth airflow baffle is completely located in the area directly below the third airflow baffle; the fifth airflow baffle is arranged below the fourth airflow baffle, and the shape, size and arrangement of the fifth airflow baffle are the same as those of the fourth airflow baffle, and the fifth airflow baffle is completely located in the area directly below the fourth airflow baffle; the distance D1 between the second airflow baffle and the first airflow baffle is 30 mm, the distance D2 between the third airflow baffle and the second airflow baffle is 15 mm, the distance D3 between the fourth airflow baffle and the third airflow baffle is 15 mm, and the distance D4 between the fifth airflow baffle and the fourth airflow baffle is 15 mm;

[0110] Verification results such as Fig.11 shown.

[0111] Experimental Group 7

[0112] Basically the same as experimental group 6, the only difference is that: the distance D1 between the second air flow baffle and the first air flow baffle is 15 mm, the distance D2 between the third air flow baffle and the second air flow baffle is 30 mm, the distance D3 between the fourth air flow baffle and the third air flow baffle is 15 mm, and the distance D4 between the fifth air flow baffle and the fourth air flow baffle is 15 mm;

[0113] Verification results such as Fig.12 shown.

[0114] Experimental Group 8

[0115] Basically the same as experimental group 6, the only difference is that: the distance D1 between the second air flow baffle and the first air flow baffle is 15 mm, the distance D2 between the third air flow baffle and the second air flow baffle is 15 mm, the distance D3 between the fourth air flow baffle and the third air flow baffle is 30 mm, and the distance D4 between the fifth air flow baffle and the fourth air flow baffle is 15 mm;

[0116] Verification results such as Fig.13 shown.

[0117] Experimental Group 9

[0118] Basically the same as experimental group 6, the only difference is that: the distance D1 between the second air flow baffle and the first air flow baffle is 15 mm, the distance D2 between the third air flow baffle and the second air flow baffle is 15 mm, the distance D3 between the fourth air flow baffle and the third air flow baffle is 15 mm, and the distance D4 between the fifth air flow baffle and the fourth air flow baffle is 30 mm;

[0119] Verification results such as Fig.14 shown.

[0120] Experimental Group 10

[0121] Basically the same as experimental group 6, the only difference is that: the distance D1 between the second air flow baffle and the first air flow baffle is 15 mm, the distance D2 between the third air flow baffle and the second air flow baffle is 20 mm, the distance D3 between the fourth air flow baffle and the third air flow baffle is 25 mm, and the distance D4 between the fifth air flow baffle and the fourth air flow baffle is 30 mm;

[0122] Verification results such as Fig.15 shown.

[0123] Experimental Group 11

[0124] The same as experimental group 4, the only difference is that: the single-plate static pressure chamber cotton net cleaner does not have the third airflow baffle, the fourth airflow baffle and the fifth airflow baffle;

[0125] Verification results such as Fig.16 shown.

[0126] Experimental Group 12

[0127] The same as experimental group 4, the only difference is that: the single-plate static pressure chamber cotton net cleaner does not have the fourth airflow baffle and the fifth airflow baffle;

[0128] Verification results such as Fig.17 shown.

[0129] Experimental Group 13

[0130] It is basically the same as experimental group 4, except that: the single-plate static pressure chamber cotton net cleaner does not have the fifth airflow baffle;

[0131] Verification results such as Fig.18 shown.

[0132] Experimental Group 14

[0133] The shape of the cover plate: arc plate, the central angle of the arc is 30°;

[0134] The shape of the air inlet: oval, with an area of ​​5000mm²;

[0135] The distance between the front side plate and the rear side plate is 40 mm, the length L1 of the front side plate in the vertical direction is 120 mm, the thickness of the first air flow baffle is 5 mm, the length L2 of the portion of the front side plate located above the first air flow baffle in the vertical direction is 30 mm, the length of the impurity removal opening is 1030 mm, the width of the impurity removal opening is 5 mm, and the total width of the gap a and the gap b is 26.25 mm;

[0136] Verification results such as Fig.19 shown.

[0137] Experimental Group 15

[0138] The experimental group 14 is basically the same, except that: the cover plate is composed of a front top plate, a rear top plate, a left top plate, and a right top plate; the lower edge of the front top plate is connected to the upper edge of the front side plate; the upper edge of the front top plate is located behind the lower edge of the front top plate; the lower edge of the rear top plate is connected to the upper edge of the rear side plate; the upper edge of the rear top plate is located in front of the lower edge of the rear top plate; the two ends of the lower edge of the left top plate are respectively connected to the left ends of the upper edges of the front side plate and the rear side plate; the upper edge of the left top plate is located on the right side of the lower edge of the left top plate; the two ends of the lower edge of the right top plate are respectively connected to the right ends of the upper edges of the front side plate and the rear side plate; the upper edge of the right top plate is located on the left side of the lower edge of the right top plate; the upper edges of the front top plate, the rear top plate, the left top plate, and the right top plate together form an air intake;

[0139] Verification results such as Fig. 20 shown.

[0140] Experimental Group 16

[0141] The shape of the cover plate: arc plate, the central angle of the arc is 180°;

[0142] The shape of the air inlet: square, area 8000mm²;

[0143] The distance between the front side plate and the rear side plate is 80 mm, the length L1 of the front side plate in the vertical direction is 100 mm, the thickness of the first air flow baffle is 2 mm, the length L2 of the portion of the front side plate located above the first air flow baffle in the vertical direction is 45 mm, the length of the impurity removal opening is 2000 mm, the width of the impurity removal opening is 9 mm, and the total width of the gap a and the gap b is 9 mm;

[0144] Verification results such as Fig.21 shown.

[0145] Experimental Group 17

[0146] Basically the same as experimental group 16, the only difference is: Fig. 27 and Fig.28As shown, the cover plate is composed of a front top plate 8, a rear top plate 9, a left top plate 10, and a right top plate 11. The lower edge of the front top plate 8 is connected to the upper edge of the front side plate, the upper edge of the front top plate 8 is located on the rear side of the lower edge of the front top plate 8, the lower edge of the rear top plate 9 is connected to the upper edge of the rear side plate, the upper edge of the rear top plate 9 is located on the front side of the lower edge of the rear top plate 9, the two ends of the lower edge of the left top plate 10 are respectively connected to the left ends of the upper edges of the front side plate and the rear side plate, the upper edge of the left top plate 10 is located on the right side of the lower edge of the left top plate 10, the two ends of the lower edge of the right top plate 11 are respectively connected to the right ends of the upper edges of the front side plate and the rear side plate, the upper edge of the right top plate 11 is located on the left side of the lower edge of the right top plate 11, and the upper edges of the front top plate 8, the rear top plate 9, the left top plate 10, and the right top plate 11 together form an air intake 1;

[0147] Verification results such as Fig. 22 shown.

[0148] Experimental Group 18

[0149] The shape of the cover: flat plate;

[0150] The shape of the air inlet: oval, with an area of ​​5000mm²;

[0151] The distance between the front side plate and the rear side plate is 75 mm, the length L1 of the front side plate in the vertical direction is 50 mm, the thickness of the first air flow baffle is 1 mm, the length L2 of the portion of the front side plate located above the first air flow baffle in the vertical direction is 5 mm, the length of the impurity removal opening is 1000 mm, the width of the impurity removal opening is 9 mm, and the total width of the gap a and the gap b is 9 mm;

[0152] Verification results such as Fig.23 shown.

[0153] Experimental Group 19

[0154] The experimental group 18 is basically the same, except that: the cover plate is composed of a front top plate, a rear top plate, a left top plate, and a right top plate; the lower edge of the front top plate is connected to the upper edge of the front side plate; the upper edge of the front top plate is located behind the lower edge of the front top plate; the lower edge of the rear top plate is connected to the upper edge of the rear side plate; the upper edge of the rear top plate is located in front of the lower edge of the rear top plate; the two ends of the lower edge of the left top plate are respectively connected to the left ends of the upper edges of the front side plate and the rear side plate; the upper edge of the left top plate is located on the right side of the lower edge of the left top plate; the two ends of the lower edge of the right top plate are respectively connected to the right ends of the upper edges of the front side plate and the rear side plate; the upper edge of the right top plate is located on the left side of the lower edge of the right top plate; the upper edges of the front top plate, the rear top plate, the left top plate, and the right top plate together form an air intake;

[0155] Verification results such as Fig.24 shown.

[0156] from Figure 4~Figure 7 , Figure 11 to Figure 24 as well as Fig.29 It can be seen that the air flow velocity distribution uniformity at the impurity removal port of the single-plate cotton web cleaner of experimental groups 1 to 19 is excellent.

[0157] The above verification process and verification results are sufficient to prove that the single-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 single-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 recorded as 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 airflow baffle (7) is provided between the front side plate and the rear side plate, the first airflow baffle (7) is arranged horizontally, the air suction port (1) is completely located in the area directly above the first airflow baffle (7), and the impurity removal port (5) is completely located in the area directly below the first airflow baffle (7); A gap a of equal width is left between the first air flow baffle (7) and the front side plate, and a gap b of equal width is left between the first air flow baffle (7) and the rear side plate. The total width of the gap a and the gap b is 0.85-5.25 times the width of the impurity removal opening (5), and the width of the gap a and the gap b are the same.

2. A single-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 5-15 mm.

3. A single-plate static pressure chamber cotton web cleaner according to claim 1, characterized in that: The front side plate and the rear side plate are both vertical plates and are parallel to the left and right directions, and the distance between the front side plate and the rear side plate is 40-80 mm.

4. A single-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 single-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 air flow baffle (7) in the vertical direction is 1 / 10-1 / 2 of L1.

6. A single-plate static pressure chamber cotton web cleaner according to claim 5, characterized in that: A second airflow baffle is also provided below the first airflow baffle (7); the second airflow baffle has the same shape, size and arrangement as the first airflow baffle (7); the second airflow baffle is completely located in the area directly below the first airflow baffle (7); and the distance D1 between the second airflow baffle and the first airflow baffle (7) is 1 / 10 to 1 / 5 of L1.

7. A single-plate static pressure chamber cotton web cleaner according to claim 6, characterized in that: A third air flow baffle is also provided below the second air flow baffle. The third air flow baffle has the same shape, size and arrangement as the second air flow baffle. The third air flow baffle is completely located in the area directly below the second air flow baffle. The distance D2 between the third air flow baffle and the second air flow baffle is 1 / 10-1 / 5 of L1.

8. A single-plate static pressure chamber cotton web cleaner according to claim 7, characterized in that: A fourth air flow baffle is also provided below the third air flow baffle. The fourth air flow baffle has the same shape, size and arrangement as the third air flow baffle. The fourth air flow baffle is completely located in the area directly below the third air flow baffle. The distance D3 between the fourth air flow baffle and the third air flow baffle is 1 / 10-1 / 5 of L1.

9. A single-plate static pressure chamber cotton web cleaner according to claim 8, characterized in that: A fifth air flow baffle is also provided below the fourth air flow baffle. The fifth air flow baffle has the same shape, size and arrangement as the fourth air flow baffle. The fifth air flow baffle is completely located directly below the fourth air flow baffle. The distance D4 between the fifth air flow baffle and the fourth air flow baffle is 1 / 10-1 / 5 of L1.

10. The single-plate static pressure chamber cotton web cleaner according to claim 4, characterized in that: The cover plate is a flat plate; Alternatively, the cover plate is an arc plate, and the central angle of the arc is 30-180°; Alternatively, the cover plate is composed of a front top plate, a rear top plate, a left top plate, and a right top plate; the lower edge of the front top plate is connected to the upper edge of the front side plate, the upper edge of the front top plate is located behind the lower edge of the front top plate, the lower edge of the rear top plate is connected to the upper edge of the rear side plate, the upper edge of the rear top plate is located in front of the lower edge of the rear top plate, the two ends of the lower edge of the left top plate are respectively connected to the left ends of the upper edges of the front side plate and the rear side plate, the upper edge of the left top plate is located on the right side of the lower edge of the left top plate, the two ends of the lower edge of the right top plate are respectively connected to the right ends of the upper edges of the front side plate and the rear side plate, the upper edge of the right top plate is located on the left side of the lower edge of the right top plate, and the upper edges of the front top plate, the rear top plate, the left top plate, and the right top plate together form an air intake (1).

Images