Oil nozzle capable of automatically adjusting width of oil outlet area

Abstract

The present invention belongs to the technical field of chemical fiber spinning, and relates to an oil nozzle that can automatically adjust the width of the oil outlet area. The oil nozzle includes a ceramic oil nozzle base, a left fixed baffle, a left movable ceramic baffle, a right movable ceramic baffle, a right fixed baffle, a left spring, and a right spring; a strip oil outlet and a cavity are provided on the ceramic oil nozzle base, and the left and right movable ceramic baffles are connected to the fixed baffle through springs and can move in the cavity, and an arc-shaped sealing strip is provided between the two baffles; the oil nozzle automatically adjusts the width of the oil outlet area by adjusting the position of the left and right movable ceramic baffles to adapt to the shaking of the fiber bundle and ensure uniform oiling. The present invention can automatically adjust the width of the oil outlet area, solve the problem of uneven oiling, and meet the requirements of energy saving and consumption reduction.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical fiber spinning and relates to an oil nozzle capable of automatically adjusting the width of an oil outlet area. Background Art

[0002] In the manufacturing process of synthetic fibers, the raw materials are heated and melted, extruded through a spinning spinneret, and then stretched and other subsequent processes to form a continuous fibrous material. In this process, the oil nozzle plays a vital role. Its main function is to add oil to the fiber bundles that are continuously moving at high speed. The role of the oil agent is mainly reflected in the following aspects: reducing the mutual friction between the monofilaments, eliminating the static electricity generated by the friction between the fiber and the air during high-speed travel, and improving the smoothness and bundling of the fiber, thereby improving the processing performance of the subsequent process. Therefore, the oil nozzle is widely used in the spinning production of various synthetic fibers.

[0003] Patent CN202671727U discloses an oil nozzle for chemical fiber spinning, which improves the uniformity of oiling by adding an oil outlet. However, the widths of the two oil outlet areas of the oil nozzle are fixed and cannot be adjusted, which has certain limitations. Specifically, since the tow may shake during the movement, some oil outlets are not completely blocked by the tow, while other oil outlets are blocked by too many tows, resulting in excessive spraying of oil. This uneven blocking situation will lead to uneven oiling, and some fiber tows are not adequately protected by the oil. Fiber tows that lack oil protection are prone to produce white powder and hair in subsequent processing, seriously affecting the quality of the product.

[0004] To solve this problem, an intuitive idea is to increase the amount of oil discharged to improve the oiling rate. However, although this approach may alleviate the problem of uneven oiling to a certain extent, it will significantly increase the cost of oiling, which does not meet the production requirements of energy saving and consumption reduction.

[0005] Therefore, in view of the above problems existing in the prior art, it is necessary to provide a new type of oil nozzle design to overcome or at least alleviate the above defects of the prior art. Summary of the invention

[0006] An oil nozzle capable of automatically adjusting the width of an oil outlet area comprises a ceramic oil nozzle base, a left fixed baffle, a left movable ceramic baffle, a right movable ceramic baffle, a right fixed baffle, a left spring and a right spring;

[0007] A strip-shaped oil outlet parallel to the left and right directions is provided on the front side of the ceramic oil nozzle base, and the strip-shaped oil outlet extends toward the rear side of the ceramic oil nozzle base to form a cavity;

[0008] The left fixed baffle, the left movable ceramic baffle, the right movable ceramic baffle, and the right fixed baffle are all vertical plates parallel to the front-rear direction, and are arranged in sequence from left to right with a spacing, and the spacing between the left movable ceramic baffle and the right movable ceramic baffle is 10-25mm;

[0009] A left ceramic protrusion is provided on the rear side of the left movable ceramic baffle, and a right ceramic protrusion is provided on the rear side of the right movable ceramic baffle. The left ceramic protrusion and the right ceramic protrusion are inserted into the cavity from the front side of the cavity at the same time;

[0010] The arc-shaped sealing strip is located in the cavity and has a thickness equal to the height of the cavity. Both ends of the arc-shaped sealing strip are fixedly connected to the left ceramic protrusion and the right ceramic protrusion respectively.

[0011] An oil inlet hole is provided on the ceramic oil nozzle base, and the oil inlet hole is located directly above the area surrounded by the arc-shaped sealing strip and the strip-shaped oil outlet, and the oil inlet hole is connected with the cavity;

[0012] The left movable ceramic baffle is connected to the left fixed baffle through the left spring, and the right fixed baffle is connected to the right movable ceramic baffle through the right spring. The central axes of the left spring and the right spring are parallel to the left and right directions. The length of the left spring and the right spring (i.e., the initial length when not necessarily compressed) is 5-10mm, and the stiffness coefficient is 0.5-2.0N / m;

[0013] The left fixed baffle plate and the right fixed baffle plate are fixedly connected to the ceramic oil nozzle base at the same time.

[0014] The present invention controls the material of each component, the distance between the left movable ceramic baffle and the right movable ceramic baffle, the length of the left spring, the stiffness coefficient of the left spring, the length of the right spring, and the stiffness coefficient of the right spring so that after the wire bundle squeezes the left movable ceramic baffle and the right movable ceramic baffle, the left movable ceramic baffle can move to the left and the right movable ceramic baffle can move to the right, thereby driving the two ends of the arc-shaped sealing strip to move, causing the width of the oil outlet area between the two ends of the arc-shaped sealing strip to change.

[0015] As the preferred technical solution:

[0016] As described above, in an oil nozzle capable of automatically adjusting the width of the oil outlet area, the left ceramic protrusion and the right ceramic protrusion are cylindrical in shape, with the central axis parallel to the front-to-back direction, a diameter of 1-3mm, and a length along the front-to-back direction of 1-4mm; the width of the strip oil outlet along the left-to-right direction is 20-25mm, and the height along the up-down direction is 2-4mm; the strip oil outlet extends 20-30mm to the rear side of the ceramic oil nozzle base to form a cavity.

[0017] In the oil nozzle capable of automatically adjusting the width of the oil outlet area as described above, the number of the left spring and the number of the right spring are both 2.

[0018] As described above, the oil nozzle capable of automatically adjusting the width of the oil outlet area, the front side of the ceramic oil nozzle base is also provided with an upper slide rail and a lower slide rail parallel to the left and right directions, the upper slide rail and the lower slide rail are respectively located above and below the strip-shaped oil outlet;

[0019] An upper left ceramic slider and a lower left ceramic slider are also provided on the rear side of the left movable ceramic baffle, and an upper right ceramic slider and a lower right ceramic slider are also provided on the rear side of the right movable ceramic baffle. The upper left ceramic slider and the upper right ceramic slider are simultaneously slidably connected to the upper slide rail, and the lower left ceramic slider and the lower right ceramic slider are simultaneously slidably connected to the lower slide rail.

[0020] In the oil nozzle capable of automatically adjusting the width of the oil outlet area as described above, the left fixed baffle plate and the right fixed baffle plate are fixedly connected to the ceramic oil nozzle base through fixing bolts at the same time.

[0021] As described above, in the oil nozzle capable of automatically adjusting the width of the oil outlet area, the ceramic oil nozzle base is a cubic structure.

[0022] In the oil nozzle capable of automatically adjusting the width of the oil outlet area as described above, the left fixed baffle plate and the right fixed baffle plate are respectively located on the left and right sides of the ceramic oil nozzle base.

[0023] Beneficial effects:

[0024] 1. The oil nozzle of the present invention can automatically adjust the width of the oil outlet area to adapt to fiber bundles of different widths and improve the uniformity of oiling.

[0025] 2. The present invention effectively reduces oil leakage and saves oil cost through the cooperation of the arc-shaped sealing strip and the movable ceramic baffle.

[0026] 3. The present invention improves product quality and can reduce problems such as white powder and hairy fibers caused by uneven oiling.

[0027] 4. The oil nozzle of the present invention has a simple structure and is easy to manufacture and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the oil nozzle capable of automatically adjusting the width of the oil outlet area of ​​the present invention;

[0029] Figure 2 It is a schematic diagram of the position of the arc-shaped sealing strip when the width of the strip oil outlet area is the initial value;

[0030] Figure 3 It is a schematic diagram of the position change of the arc-shaped sealing strip after the width of the strip oil outlet area becomes larger;

[0031] Among them, 1-ceramic oil nozzle base, 2-right movable ceramic baffle, 3-right fixed baffle, 4-right spring, 5-fixing bolt, 6-strip oil outlet, 7-cavity, 8-oil inlet hole, 9-arc sealing strip, 10-right ceramic protrusion. DETAILED DESCRIPTION

[0032] 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.

[0033] The following are the test methods for the relevant performance indicators in each embodiment:

[0034] Linear density: refer to the test method specified in GB / T 16604-2017; the test temperature is 25°C, the test humidity is 65%, and the pre-tension is 0.05cN / dtex.

[0035] Oil leakage rate: Place an oil collecting tank under the oil nozzle to collect the oil leaking from the oil nozzle. Use a measuring cylinder to measure the total amount of oil leakage from the oil nozzle within 24 hours (mL), and then calculate the average oil leakage per hour (mL / h).

[0036] Oil content, average oil content of silk cake, standard deviation of oil content of silk cake:

[0037] The oil content is tested according to the test method specified in GB / T 6504-2017;

[0038] Average oil content of silk cake The calculation formula is as follows:

[0039] ;

[0040] Where X1, X2, ..., X n is the measured value of oil content (%), n is the total number of measured samples, and the value is 6;

[0041] The calculation formula of the standard deviation S of silk cake oil content is as follows:

[0042] ;

[0043] In the formula, X i is the measured value of oil content, is the average oil content, and n is the total number of measured samples.

[0044] An oil nozzle that can automatically adjust the width of the oil outlet area, such as Figure 1~Figure 3As shown, it includes a ceramic oil nozzle base 1, a left fixed baffle, a left movable ceramic baffle, a right movable ceramic baffle 2, a right fixed baffle 3, a left spring, a right spring 4, an arc-shaped sealing strip 9 and a fixing bolt 5;

[0045] like Figure 1 As shown, the ceramic oil nozzle base 1 is a cubic structure, and a strip-shaped oil outlet 6, an upper slide rail, a lower slide rail and an oil inlet hole 8 are provided on the ceramic oil nozzle base 1;

[0046] The strip oil outlet 6, the upper slide rail and the lower slide rail are all located on the front side of the ceramic oil nozzle base 1 and are parallel to the left-right direction; the width of the strip oil outlet 6 along the left-right direction is 20-25 mm, and the height along the up-down direction is 2-4 mm; the strip oil outlet 6 extends 20-30 mm to the rear side of the ceramic oil nozzle base 1 to form a cavity 7; the upper slide rail and the lower slide rail are respectively located above and below the strip oil outlet 6;

[0047] The left fixed baffle, the left movable ceramic baffle, the right movable ceramic baffle 2, and the right fixed baffle 3 are all vertical plates parallel to the front-rear direction, and are arranged in sequence from left to right with a spacing, and the spacing between the left movable ceramic baffle and the right movable ceramic baffle 2 is 10-25mm;

[0048] The left fixed baffle plate and the right fixed baffle plate 3 are respectively located on the left and right sides of the ceramic oil nozzle base 1 and are respectively fixedly connected to the ceramic oil nozzle base 1 by fixing bolts 5;

[0049] The number of the left spring and the right spring 4 are both 2 and the central axis is parallel to the left and right directions; the length of the left spring and the right spring 4 is 5-10 mm, and the stiffness coefficient is 0.5-2.0 N / m; the left movable ceramic baffle is connected to the left fixed baffle through the left spring, and the right fixed baffle 3 is connected to the right movable ceramic baffle 2 through the right spring 4;

[0050] like Figure 2 and Figure 3 As shown, a left ceramic protrusion is provided on the rear side of the left movable ceramic baffle plate, and a right ceramic protrusion 10 is provided on the rear side of the right movable ceramic baffle plate 2; the left ceramic protrusion and the right ceramic protrusion 10 are cylindrical in shape, with a central axis parallel to the front-to-back direction, a diameter of 1-3mm, and a length along the front-to-back direction of 1-4mm; the left ceramic protrusion and the right ceramic protrusion 10 are inserted into the cavity 7 from the front side of the cavity 7 at the same time; an upper left ceramic slider and a lower left ceramic slider are also provided on the rear side of the left movable ceramic baffle plate, and an upper right ceramic slider and a lower right ceramic slider are also provided on the rear side of the right movable ceramic baffle plate 2, the upper left ceramic slider and the upper right ceramic slider are simultaneously slidably connected to the upper slide rail, and the lower left ceramic slider and the lower right ceramic slider are simultaneously slidably connected to the lower slide rail;

[0051] The arc-shaped sealing strip 9 is located in the cavity 7 and has a thickness equal to the height of the cavity 7. Both ends of the arc-shaped sealing strip 9 are fixedly connected to the left ceramic protrusion and the right ceramic protrusion 10 respectively;

[0052] The oil inlet hole 8 is located directly above the area surrounded by the arc-shaped sealing strip 9 and the strip-shaped oil outlet 6 , and the oil inlet hole 8 is communicated with the cavity 7 .

[0053] When the tow passes through the oil nozzle, the tow is laid flat between the left movable ceramic baffle and the right movable ceramic baffle, which is located on the front side of the ceramic oil nozzle base. The oil passes from the oil inlet hole into the area surrounded by the arc-shaped sealing strip and the strip-shaped oil outlet, and flows out from the strip-shaped oil outlet to oil the tow. When the tow shakes and causes the width of the tow to change, the width of the oil outlet area will also change accordingly to fit the width of the tow, thereby effectively reducing oil leakage and achieving uniform oiling. For example, Figures 2 to 3 As shown, when the wire bundle shakes and causes the width of the wire bundle to increase, the wire bundle will exert a greater force on the left movable ceramic baffle and the right movable ceramic baffle, causing the left movable ceramic baffle to slide to the left along the upper and lower slide rails, while the right movable ceramic baffle also slides to the right along the upper and lower slide rails, the distance between the left movable ceramic baffle and the right movable ceramic baffle increases, and the width of the oil outlet area also increases accordingly; since the two ends of the arc-shaped sealing strip are respectively fixedly connected to the left ceramic protrusion and the right ceramic protrusion, the arc-shaped sealing strip will also deform accordingly as the left movable ceramic baffle and the right movable ceramic baffle move to maintain a seal with the edge of the strip oil outlet; at the same time, the left spring and the right spring are compressed to store elastic potential energy, providing power for subsequent resetting.

[0054] Example 1

[0055] A method for producing polyester industrial yarn, the specific process flow is: polyester chips → solid phase viscosity enhancement → screw melt extrusion → extrusion molding → cooling → oiling the nozzle (using the nozzle that can automatically adjust the width of the oil outlet area as described above) → drafting → shaping → winding and doffing;

[0056] The size parameters of the oil nozzle that can automatically adjust the width of the oil outlet area are as follows: the width of the strip oil outlet along the left-right direction is 20mm, and the height along the up-down direction is 2mm; the depth of the cavity in the front-to-back direction is 20mm; the spacing between the left movable ceramic baffle and the right movable ceramic baffle is 10mm; the length of the left spring and the right spring are both 10mm, and the stiffness coefficient is 0.5N / m; the cross-sectional diameter of the left ceramic protrusion and the right ceramic protrusion are both 1mm, and the length along the front-to-back direction is both 1mm;

[0057] Relevant process parameters: metering pump speed is 10.02r / min, metering pump specification is 10cc, oil pump speed is 19.50r / min, oil pump specification is 0.08cc.

[0058] The oil leakage rate of the oil nozzle, which can automatically adjust the width of the oil outlet area during the production process, is 12.50 mL / h; the specifications of the polyester industrial yarn finally produced are 556.3 dtex / 96f, the average oil content of the yarn cake is 0.653%, and the standard deviation of the oil content of the yarn cake is 0.48%.

[0059] Comparative Example 1

[0060] A method for producing polyester industrial yarn is basically the same as Example 1, except that the left spring and the right spring in the oil nozzle are replaced by two iron rods of equal length (the length of one iron rod is equal to the initial length of the left spring, and the length of the other iron rod is equal to the initial length of the right spring), which results in a fixed width of the oil outlet area of ​​the oil nozzle.

[0061] The oil leakage rate of the oil nozzle during the production process was 29.17 mL / h; the final specification of the polyester industrial yarn was 556.3 dtex / 96f, the average oil content of the yarn cake was 0.641%, and the standard deviation of the oil content of the yarn cake was 1.36%.

[0062] Compared with Example 1, the oil leakage rate of the oil nozzle in the production process, the standard deviation of the oil content of the polyester industrial yarn, and the hairy yarn degradation rate are significantly increased. This is because the width of the oil outlet area of ​​the oil nozzle used in Comparative Example 1 is fixed and cannot be adjusted. Since the yarn bundles may shake during the movement, some oil outlets are not completely blocked by the yarn bundles, while other oil outlets are blocked by too many yarn bundles, resulting in uneven oil spraying. This uneven situation increases the oil leakage rate of the oil nozzle in the production process, and also causes uneven oil content of the polyester industrial yarn and an increase in the standard deviation of the oil content.

[0063] Example 2

[0064] A method for producing polyester industrial yarn, the specific process flow is: polyester chips → solid phase viscosity enhancement → screw melt extrusion → extrusion molding → cooling → oiling the nozzle (using the nozzle that can automatically adjust the width of the oil outlet area as described above) → drafting → shaping → winding and doffing;

[0065] The size parameters of the oil nozzle that can automatically adjust the width of the oil outlet area are as follows: the width of the strip oil outlet along the left-right direction is 25mm, and the height along the up-down direction is 2mm; the depth of the cavity in the front-to-back direction is 30mm; the distance between the left movable ceramic baffle and the right movable ceramic baffle is 15mm; the length of the left spring and the right spring are both 8mm, and the stiffness coefficient is 1N / m; the cross-sectional diameter of the left ceramic protrusion and the right ceramic protrusion are both 2mm, and the length along the front-to-back direction is both 2mm;

[0066] Relevant process parameters: metering pump speed is 16.48r / min, metering pump specification is 15cc, oil pump speed is 26.00r / min, oil pump specification is 0.12cc.

[0067] The oil leakage rate of the oil nozzle, which can automatically adjust the width of the oil outlet area during the production process, is 15.82 mL / h; the specifications of the polyester industrial yarn finally produced are 1140.4 dtex / 192f, the average oil content of the yarn cake is 0.621%, and the standard deviation of the oil content of the yarn cake is 0.62%.

[0068] Example 3

[0069] A method for producing polyester industrial yarn, the specific process flow is: polyester chips → solid phase viscosity enhancement → screw melt extrusion → extrusion molding → cooling → oiling the nozzle (using the nozzle that can automatically adjust the width of the oil outlet area as described above) → drafting → shaping → winding and doffing;

[0070] The size parameters of the oil nozzle that can automatically adjust the width of the oil outlet area are as follows: the width of the strip oil outlet along the left-right direction is 25mm, and the height along the up-down direction is 4mm; the depth of the cavity in the front-to-back direction is 30mm; the distance between the left movable ceramic baffle and the right movable ceramic baffle is 25mm; the length of the left spring and the right spring are both 5mm, and the stiffness coefficient is both 2N / m; the cross-sectional diameter of the left ceramic protrusion and the right ceramic protrusion are both 3mm, and the length along the front-to-back direction is both 4mm;

[0071] Relevant process parameters: metering pump speed is 16.48r / min, metering pump specification is 15cc, oil pump speed is 26.00r / min, oil pump specification is 0.12cc.

[0072] The oil leakage rate of the oil nozzle, which can automatically adjust the width of the oil outlet area during the production process, is 18.86 mL / h; the specifications of the polyester industrial yarn finally produced are 2240.8 dtex / 384f, the average oil content of the yarn cake is 0.629%, and the standard deviation of the oil content of the yarn cake is 1.02%.

Claims

1. An oil nozzle capable of automatically adjusting the width of the oil outlet area, characterized in that: It comprises a ceramic oil nozzle base (1), a left fixed baffle, a left movable ceramic baffle, a right movable ceramic baffle (2), a right fixed baffle (3), a left spring and a right spring (4); A strip-shaped oil outlet (6) parallel to the left and right directions is provided on the front side of the ceramic oil nozzle base (1), and the strip-shaped oil outlet (6) extends toward the rear side of the ceramic oil nozzle base (1) to form a cavity (7); The left fixed baffle, the left movable ceramic baffle, the right movable ceramic baffle (2), and the right fixed baffle (3) are all vertical plates parallel to the front-to-back direction of the ceramic nozzle base (1), and are arranged in sequence from left to right with a spacing, and the spacing between the left movable ceramic baffle and the right movable ceramic baffle (2) is 10-25 mm; A left ceramic protrusion is provided on the rear side of the left movable ceramic baffle, and a right ceramic protrusion (10) is provided on the rear side of the right movable ceramic baffle (2), and the left ceramic protrusion and the right ceramic protrusion (10) are simultaneously inserted into the cavity (7) from the front side of the cavity (7); The arc-shaped sealing strip (9) is located in the cavity (7) and has a thickness equal to the height of the cavity (7). The two ends of the arc-shaped sealing strip (9) are respectively fixedly connected to the left ceramic protrusion and the right ceramic protrusion (10); An oil inlet hole (8) is provided on the ceramic oil nozzle base (1), the oil inlet hole (8) is located directly above the area surrounded by the arc-shaped sealing strip (9) and the strip-shaped oil outlet (6), and the oil inlet hole (8) is connected to the cavity (7); The left movable ceramic baffle is connected to the left fixed baffle through a left spring, and the right fixed baffle (3) is connected to the right movable ceramic baffle (2) through a right spring (4). The central axes of the left spring and the right spring (4) are parallel to the left and right directions. The lengths of the left spring and the right spring (4) are 5-10 mm, and the stiffness coefficients are 0.5-2.0 N / m. The left fixed baffle plate and the right fixed baffle plate (3) are fixedly connected to the ceramic oil nozzle base (1) at the same time.

2. The oil nozzle capable of automatically adjusting the width of the oil outlet area according to claim 1, characterized in that: The left ceramic protrusion and the right ceramic protrusion (10) are cylindrical in shape, with a central axis parallel to the front-to-back direction, a diameter of 1-3 mm, and a length along the front-to-back direction of 1-4 mm; the strip-shaped oil outlet (6) has a width of 20-25 mm in the left-right direction and a height of 2-4 mm in the up-down direction; the strip-shaped oil outlet (6) extends 20-30 mm toward the rear side of the ceramic oil nozzle base (1) to form a cavity (7).

3. The oil nozzle capable of automatically adjusting the width of the oil outlet area according to claim 1, characterized in that: The number of the left spring and the number of the right spring (4) are both 2.

4. The oil nozzle capable of automatically adjusting the width of the oil outlet area according to claim 1, characterized in that: The front side surface of the ceramic oil nozzle base (1) is also provided with an upper slide rail and a lower slide rail parallel to the left and right directions, and the upper slide rail and the lower slide rail are respectively located above and below the strip-shaped oil outlet (6); An upper left ceramic slider and a lower left ceramic slider are also provided on the rear side of the left movable ceramic baffle, and an upper right ceramic slider and a lower right ceramic slider are also provided on the rear side of the right movable ceramic baffle (2). The upper left ceramic slider and the upper right ceramic slider are simultaneously slidably connected to the upper slide rail, and the lower left ceramic slider and the lower right ceramic slider are simultaneously slidably connected to the lower slide rail.

5. The oil nozzle capable of automatically adjusting the width of the oil outlet area according to claim 1, characterized in that: The left fixed baffle plate and the right fixed baffle plate (3) are fixedly connected to the ceramic oil nozzle base (1) via fixing bolts (5) at the same time.

6. The oil nozzle capable of automatically adjusting the width of the oil outlet area according to claim 1, characterized in that: The ceramic oil nozzle base (1) is a cubic structure.

7. The oil nozzle capable of automatically adjusting the width of the oil outlet area according to claim 6, characterized in that: The left fixed baffle plate and the right fixed baffle plate (3) are respectively located on the left and right sides of the ceramic oil nozzle base (1).

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