A kind of coarse denier polypropylene staple fiber processing equipment and processing method thereof

Abstract

The present application discloses a coarse denier polypropylene staple fiber processing equipment and a processing method thereof, which includes a drying device, a stirring device, a spinning device, a heat setting device and a cutting device. The drying device is provided with a drying box, a heating mechanism, a detection mechanism and an energy storage mechanism; the heating mechanism includes an air supply mechanism, a heating box, a heating element and an air duct. A drying rod, a plurality of drying sheets and a drying motor are also provided in the drying box. The plurality of drying sheets are fixed on the outer wall of the drying rod at equal intervals. The drying rod is horizontally arranged. One end of the air duct is connected to the heating box, and the other end is arranged on the top of the drying box. The drying box is placed above the stirring device. A discharge port is provided at the bottom of the drying box. A first electromagnetic valve is provided at the discharge port. The heating element is installed in the heating box. The present application has the effect of drying the material and drying the material again during the stirring process. The fiber denier produced is 50 to 120 denier, which can be used as a carpet and mixed with glass fiber to make glass fiber felt.

Description

Technical Field

[0001] The present application relates to the field of polypropylene staple fiber preparation, and in particular to a coarse denier polypropylene staple fiber processing device and a processing method thereof. Background Art

[0002] At present, polypropylene staple fiber, also known as polypropylene staple fiber, is a fiber made from propylene as raw material through polymerization and melt spinning. It has the advantages of simple production process, low product price, high strength, and relatively light density. It is the lightest fiber among common chemical fibers. At present, most of the conventional polypropylene staple fibers used in the market are in the range of 1.5 to 22 deniers. In recent years, the demand for mixed felts of polypropylene and glass fiber has increased greatly by foreign carpet users and domestic users (60 to 70 deniers), which cannot meet the market's demand for multiple varieties and specifications.

[0003] In the related art, a Chinese patent with publication number CN108866652A proposes a processing method for coarse denier polypropylene staple fibers, comprising the following steps: S1, mixing: slicing PP and adding cooling masterbatch to mix; S2, melt spinning: spinning the mixed material, the screw temperature in the spinning machine is 220℃~280℃, the filter temperature is 240℃~280℃, the melt pipe temperature is 220℃~240℃, the spinning box temperature is 200℃~220℃, the spinning speed is 7~20m / min, the annular air cooling, the annular air speed is 0.8~1.0m / s, the annular air temperature is 20~25℃, the spinneret hole number is 4000 holes, and the hole diameter is 0.8mm; S3, the spinning after cooling is sequentially subjected to pre-oiling treatment, wire guide roller wire guide, slow drawing, fast drawing, post-oiling treatment, and curling treatment; S4, heat setting; S5, cutting, and packaging. The coarse denier polypropylene staple fibers produced by the invention have a denier of 50 to 120 deniers and are complete in specifications, thus meeting the market demand for coarse denier polypropylene staple fibers.

[0004] Regarding the above-mentioned related technologies, the inventors believe that there are the following defects: no drying treatment is performed before mixing the PP chips and the cooling masterbatch. If there is moisture in the PP chips and the cooling masterbatch, it will cause uneven mixing, which will affect the subsequent processes. Summary of the invention

[0005] In order to improve the problem of uneven stirring caused by the presence of moisture in PP chips and cooling masterbatch, the present application provides a coarse denier polypropylene staple fiber processing equipment and a processing method thereof.

[0006] The present application provides a coarse denier polypropylene staple fiber processing equipment adopts the following technical solution:

[0007] A coarse denier polypropylene staple fiber processing device, comprising a drying device, a stirring device, a spinning device, a heat setting device and a cutting device, wherein the drying device is provided with a drying box, a heating mechanism for heating the drying box, a detection mechanism for detecting whether the material in the drying box is dried, and an energy storage mechanism for storing energy;

[0008] The heating mechanism includes an air supply mechanism, a heating box, a heating element and an air duct arranged in the external environment. The drying box is also provided with a drying rod rotatably connected to the drying box, a plurality of drying sheets and a drying motor for driving the drying rod to rotate. The plurality of drying sheets are fixed on the outer wall of the drying rod at equal intervals. The drying rod is horizontally arranged. One end of the air duct is connected to the heating box, and the other end of the air duct is arranged on the top of the drying box. The drying box is placed above the stirring device. A discharge port is arranged at the bottom of the drying box, and a first solenoid valve is arranged at the discharge port. The heating element is installed in the heating box.

[0009] Optionally, the detection mechanism includes a detection port also arranged on the bottom side of the drying box, a second solenoid valve arranged on the detection port, a detection tube connected to the detection port, and a reaction component for detecting whether the material contains water. The detection tube is arranged at an angle, the upper end of the detection tube is connected to the detection port, and the bottom end of the detection tube is closed.

[0010] Optionally, the reaction assembly includes a reaction box fixedly connected to the bottom side of the detection tube, a reaction block, a power part for controlling the movement of the reaction block, a plurality of test papers, a winding part for winding the test papers, and a color sensor; the reaction block is provided with a reaction chamber, the reaction block and the reaction chamber are both arranged parallel to the detection tube, the detection tube is provided with a reaction groove for the movement of the reaction block, the reaction block moves in the reaction groove along a plane perpendicular to the detection tube, the test paper is attached to the bottom of the reaction chamber, the reaction block is provided with a mounting hole on the bottom wall of the reaction chamber, the color sensor is installed in the mounting hole and the color sensor is opposite to the test paper, the opening size of the reaction chamber is smaller than the opening size of the detection tube, and when the upper side wall of the reaction block is attached to the upper side of the inner wall of the detection tube, the bottom wall of the reaction chamber is flush with the bottom wall of the detection tube.

[0011] Optionally, the winding part includes multiple winding ropes, two winding rollers and two winding motors, the winding rollers rotate in the reaction box and the two winding rollers are respectively located at two ends of the reaction block, the multiple winding ropes are connected to multiple test papers at intervals, the two winding ropes located at two ends are respectively fixedly connected to two ends of the two winding rollers, and the winding motor is installed in the reaction box and is used to control the rotation of the winding rollers.

[0012] Optionally, the stirring device includes a stirring box, a stirring mechanism arranged in the stirring box, a sampling mechanism for sampling materials in the stirring box, and a heating mechanism for heating the stirring mechanism. The energy storage component provides a heat source to the lifting mechanism, and the sampling mechanism controls the operation of the heating mechanism. The stirring mechanism includes a stirring rod, a plurality of stirring blades, and a stirring motor for controlling the rotation of the stirring rod. The stirring motor is installed on the stirring box, the stirring rod rotates in the stirring box, and a plurality of stirring blades are fixed on the outside of the stirring rod.

[0013] Optionally, the energy storage assembly includes a plurality of energy storage balls and an energy storage tube, an interlayer is provided on the upper side wall of the stirring box, the energy storage tube is installed in the interlayer, one end of the energy storage tube is opened and faces the outer wall of the stirring rod, the inner wall of the heating box is provided with a placement cavity for placing the energy storage balls, the stirring box is slidably provided with a control panel at the open end of the placement cavity, the energy storage balls are filled with phase change material, the energy storage balls flow from the placement cavity into the energy storage tube, and only one energy storage ball can be placed in the energy storage tube.

[0014] Optionally, the heating mechanism includes multiple heating chambers and an ejection assembly for ejecting the energy storage ball into the heating chamber, the heating chamber is configured to be L-shaped, the heating chamber includes a horizontal section and a vertical section, the horizontal section is opposite to the opening end of the energy storage tube, multiple stirring blades are in the same horizontal plane and are divided into a group, one stirring blade in each group of stirring blades is hollow and connected to the vertical section of the corresponding heating chamber, and each hollow stirring blade has the corresponding energy storage ball flowing into it through the corresponding heating chamber.

[0015] Optionally, the ejection assembly includes an ejection rod, a reciprocating block fixedly connected to the side wall of the ejection rod, an electromagnet and a reciprocating member for realizing the reciprocating motion of the electromagnet, the ejection rod is elastically arranged at one end of the energy storage tube away from the stirring rod, the electromagnet adsorbs the reciprocating block, and the ejection rod is facing the energy storage ball.

[0016] Optionally, the temperature rising chamber is hinged with an elastic sheet at the opening of the horizontal section thereof, and a proximity switch is installed on the upper side wall of the horizontal section of the temperature rising chamber, and the proximity switch is electrically connected to a display light.

[0017] The present application also provides a method for processing coarse denier polypropylene staple fibers using the following technical solution:

[0018] A method for processing coarse denier polypropylene staple fibers comprises the following steps:

[0019] S1. Drying: Drying the PP slices and cooling masterbatch;

[0020] S2, stirring: the dried PP slices and the cooling masterbatch are mixed in a mixing box according to the proportion to obtain a mixture;

[0021] S3, melt spinning: the mixed material in S2 is fed into a spinning machine, the screw temperature in the spinning machine is set to 240°C in zone 1, 250°C in zone 2, 260°C in zone 3, 270°C in zone 4, 275°C in zone 5, 280°C in zone 6, 280°C in zone 7, and 280°C in zone 8, the filter temperature is set to 280°C, the melt pipe temperature is set to 235°C, the spinning box is set to 210°C, the spinning speed is 7.5 m / min, the annular air speed is 1.0 m / s, the annular air temperature is 22°C, the spinneret holes are 4000, and the hole diameter is 0.8 mm;

[0022] S4, spinning and drawing treatment: the spun yarn after cooling in S3 is sequentially subjected to front oiling treatment (oiling roller), godet roller guiding (godet roller), slow drawing (first drawing machine), fast drawing (second drawing machine), rear oiling treatment (oiling roller), and crimping treatment (crimping machine). The concentration of spinning oil used in the front oiling treatment and the rear oiling treatment is 7%, the drafting multiples of fast drawing and slow drawing are set to 4.2 times, and the slow drawing speed is 7.5 meters per minute;

[0023] S5, heat setting: heat setting the spun yarn after crimping treatment in S4, the heat setting temperature is 100°C, and the duration is 12 minutes;

[0024] S6, cutting and packaging: the spinning fibers heat-set in S5 are cut and packaged to obtain the coarse-denier polypropylene staple fibers.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The fiber denier produced by the above processing method is 50 to 120 denier, which can be used as carpets and mixed with glass fiber to make glass fiber mats. This process is simple and low-cost. The coarse-denier polypropylene staple fibers produced have complete specifications, which solves the market demand for coarse-denier polypropylene staple fibers;

[0027] 2. When the material falls from the detection port into the detection tube, at the same time, the power piece controls the power block to move in the reaction tank until the reaction chamber moves to a position corresponding to the inner cavity of the detection tube. At this time, the test paper is located on the reaction block, and the winding ropes at both ends pass through the gap between the reaction block and the reaction tank. Since the opening area of ​​the reaction chamber is smaller than the area of ​​the detection tube, the material entering the reaction chamber rolls flat on the test paper. The test paper uses cobalt chloride test paper. When the material still contains moisture, the test paper changes color. The color sensor is connected to a buzzer through PLC control. At this time, the color sensor is triggered and the buzzer sounds an alarm, and the material needs to be dried further; if the test paper does not change color, the material can be passed into the stirring device;

[0028] 3. The drying sheet is adapted to the size of the drying box, that is, there is a small gap between the two ends of the drying sheet and the two ends of the drying box, as well as between the side walls of the drying sheet and the side walls of the drying box, so that the drying sheet can ensure that the material in the drying box is fully stirred during the rotation process to improve the drying efficiency. During the drying process, it is necessary to keep the material submerged above the drying rod and lower than the upper side wall of the drying box, leaving sufficient time for the material to contact with the blown hot air. When the drying sheet stirs the material, part of the material will follow the gap between the two adjacent drying sheets and the drying rod and move to the upper side, that is, close to the position where the hot air is blown in by the air duct. As the drying rod continues to rotate, the material falls into the drying box. In this process, the material is fully in contact with the hot air, which can greatly improve the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present application;

[0030] Figure 2 yes Figure 1 A magnified schematic diagram of part A;

[0031] Figure 3 It is a schematic diagram of the sampling inspection mechanism in Example 1 of the present application;

[0032] Figure 4 yes Figure 1 Schematic diagram of the enlarged portion B.

[0033] Reference numerals: 1, drying box; 2, fan; 3, heating box; 4, heating element; 5, air duct; 6, drying rod; 7, drying sheet; 8, first solenoid valve; 9, discharge port; 10, detection port; 11, second solenoid valve; 12, detection tube; 13, reaction box; 14, reaction block; 15, power element; 16, test paper; 17, winding roller; 18, winding rope; 19, color sensor; 20, reaction chamber; 21, reaction tank; 22, mounting hole; 23, stirring box; 24. Stirring rod; 25. Stirring blade; 26. Stirring motor; 27. Energy storage ball; 28. Energy storage tube; 29. ​​Interlayer; 30. Placement cavity; 31. Control board; 32. Control part; 33. Temperature rising cavity; 34. Ejection rod; 35. Reciprocating block; 36. Electromagnet; 37. Reciprocating part; 38. Elastic sheet; 39. Proximity switch; 40. Inspection tube; 41. Inspection part; 42. Traction roller; 43. Inspection rod; 44. Perforation; 45. Inspection cavity; 46. Display light. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] Embodiment 1

[0036] The present application embodiment discloses a coarse denier polypropylene staple fiber processing equipment. Figure 1 and Figure 2 A coarse denier polypropylene staple fiber processing equipment includes a drying device, a stirring device, a spinning device, a heat setting device and a cutting device. The drying device is provided with a drying box 1, a heating mechanism for heating the drying box 1, a detection mechanism for detecting whether the material in the drying box 1 is dried, and an energy storage mechanism for storing energy; the heating mechanism heats and blows the material in the drying box 1 to dry it, the detection mechanism is used to detect the material and determine whether the material is dried, and the energy storage mechanism is used to store the heat of the heating mechanism in the process of blowing and drying the material, so as to dry the moisture in the subsequent stirring process.

[0037] Reference Figure 1 and Figure 2 The heating mechanism includes an air supply mechanism, a heating box 3, a heating element 4 and an air duct 5 arranged in the external environment. The drying box 1 is also provided with a drying rod 6 rotatably connected to the drying box 1, a plurality of drying sheets 7 and a drying motor for driving the drying rod 6 to rotate. The drying rod 6 is horizontally arranged. In this embodiment, four drying sheets 7 are arranged. The four drying sheets 7 are fixed on the peripheral wall of the drying rod 6 at equal intervals, and the drying sheets 7 are adapted to the size of the drying box 1, that is, there is a small gap between the two ends of the drying sheet 7 and the two ends of the drying box 1 and between the side walls of the drying sheet 7 and the side walls of the drying box 1, so that the drying sheet 7 can ensure that the material in the drying box 1 is fully stirred during the rotation process to improve the drying efficiency. During the drying process, it is necessary to keep the material submerged over the drying rod 6 and The upper side wall is lower than that of the drying box 1, so that the material has sufficient time to contact with the blown hot air, thereby improving the drying efficiency. The air supply mechanism is set as a fan 2, the output end of the fan 2 is connected to the heating box 3, the heating element 4 is installed in the heating box 3, the heating element 4 is set as an electric heating wire, and the heating element 4 is used to heat the air. One end of the air duct 5 is connected to the heating box 3, and the other end of the air duct 5 is set at the top of the drying box 1. During the process of the drying sheet 7 stirring the material, part of the material will follow the gap between the two adjacent drying sheets 7 and the drying rod 6 and move to the upper side, that is, close to the position where the hot air is blown in by the air duct 5. As the drying rod 6 continues to rotate, the material falls toward the drying box 1. In this process, the material is fully in contact with the hot air, thereby greatly improving the drying efficiency.

[0038] Reference Figure 1 and Figure 2A discharge port 9 is provided at the bottom of the drying box 1, and a first electromagnetic valve 8 is provided on the discharge port 9. The discharge port 9 guides the material into the stirring device; the detection mechanism includes a detection port 10 also provided on the bottom side of the drying box 1, a second electromagnetic valve 11 provided on the detection port 10, a detection tube 12 connected to the detection port 10, and a reaction component for detecting whether the material contains water. The detection port 10 is close to the position of the discharge port 9 and is also located on the bottom side of the drying box 1 to facilitate the outflow of the material. The detection tube 12 is inclined, the upper end of the detection tube 12 is connected to the detection port 10, and the bottom end of the detection tube 12 is closed. In this embodiment, a valve is also provided at the bottom end of the detection tube 12 to collect the detected material for repeated use. When the second electromagnetic valve 11 is opened, the material enters the detection port 10, and under the action of the gravity of the material, the material flows into the detection tube 12.

[0039] Reference Figure 1 and Figure 2 The reaction assembly includes a reaction box 13 fixedly connected to the bottom side of the detection tube 12, a reaction block 14, a power piece 15 for controlling the movement of the reaction block 14, a plurality of test papers 16, a winding portion for winding the test papers 16, and a color sensor 19. The reaction block 14 is provided with a reaction chamber 20. The reaction block 14 and the reaction chamber 20 are both arranged parallel to the detection tube 12. The reaction box 13 is hollow. The detection tube 12 is provided with a reaction groove 21 for the movement of the reaction block 14. The reaction block 14 moves in the reaction groove 21 and moves along the The power piece 15 moves perpendicularly to the plane where the detection tube 12 is located. The power piece 15 can be an electric push rod or a cylinder. The power piece 15 is installed in the reaction box 13. The upper surface of the reaction block 14 is flush with the inner bottom wall of the detection tube 12 in the initial state. When detection is required, the power piece 15 controls the reaction block 14 to move toward the detection tube 12 until the upper side wall of the reaction block 14 is in contact with the upper side wall of the inner wall of the detection tube 12. At this time, the bottom wall of the reaction chamber 20 is flush with the bottom wall of the detection tube 12, and the material can move from the detection tube 12 to the reaction chamber 20.

[0040] The reaction block 14 is provided with a mounting hole 22 on the bottom wall of the reaction chamber 20, the color sensor 19 is installed in the mounting hole 22 and the color sensor 19 is facing the test paper 16, the winding part includes a plurality of winding ropes 18, two winding rollers 17 and two winding motors, the winding rollers 17 rotate in the reaction box 13 and the two winding rollers 17 are respectively located at the two ends of the reaction block 14, the axis direction of the winding roller 17 is perpendicular to the movement direction of the test paper 16, the plurality of winding ropes 18 are arranged at intervals from the test paper 16, and the length of the test paper 16 is the same as the length of the reaction chamber 20, the two winding ropes 18 are located outside the reverse cavity, the two winding ropes 18 located at the two ends are respectively fixedly connected to the two ends of the two winding rollers 17, the winding motor is installed in the reaction box 13 and is used to control the rotation of the winding rollers 17; when the material falls from the detection port 10 into the detection tube 12, at the same time, the power piece 15 controls the power block Move in the reaction tank 21 until the reaction chamber 20 moves to a position corresponding to the inner cavity of the detection tube 12. At this time, the test paper 16 is located on the reaction block 14, and the winding ropes 18 located at both ends pass through the gap between the reaction block 14 and the reaction tank 21. In this embodiment, the gap between the end of the reaction block 14 and the reaction tank 21 is not enough for the material to enter, and only the winding rope 18 can pass through. Since the opening area of ​​the reaction chamber 20 is smaller than the area of ​​the detection tube 12, the material entering the reaction chamber 20 appears to be flat on the test paper 16 and rolls. The test paper 16 adopts cobalt chloride test paper. When the material still contains moisture, the test paper 16 changes color. The color sensor 19 is connected to a buzzer through PLC control. At this time, the color sensor 19 is triggered and the buzzer sounds an alarm, and the material needs to be dried continuously; if the test paper 16 does not change color, the material can be passed into the stirring device.

[0041] Reference Figure 1 and Figure 2The stirring device includes a stirring box 23, a stirring mechanism arranged in the stirring box 23, a sampling mechanism for sampling the material in the stirring box 23, and a heating mechanism for heating the stirring mechanism. The energy storage component provides a heat source for the lifting mechanism, and the sampling mechanism controls the operation of the heating mechanism. The stirring mechanism includes a stirring rod 24, a plurality of stirring blades 25, and a stirring motor 26 for controlling the rotation of the stirring rod 24. The stirring motor 26 is installed on the stirring box 23, the stirring rod 24 rotates in the stirring box 23, and the plurality of stirring blades 25 are fixed on the outside of the stirring rod 24; the energy storage component includes a plurality of energy storage balls 27 and an energy storage tube 28. The upper side wall of the stirring box 23 is provided with an interlayer 29, and the energy storage tube 28 is installed in the interlayer 29. The upper side wall of the stirring box 23 is provided with an interlayer 29, and the energy storage tube 28 is installed in the interlayer 29, and one end of the energy storage tube 28 is opened. One end of the tube 28 is facing the outer wall of the stirring rod 24, and the inner wall of the heating box 3 is provided with a placement cavity 30 for placing the energy storage ball 27. In this embodiment, the heating box 3 is fixed to the upper side wall of the stirring box 23, and the stirring box 23 is slidably provided with a control panel 31 at the open end of the placement cavity 30. The stirring box 23 is also provided with an operating cavity. The stirring box 23 is installed with a control member 32 in the operating cavity to drive the control panel 31 to slide. The control member 32 can be an electric push rod or a cylinder. The opening of the placement cavity 30 is connected to the energy storage tube 28. The energy storage ball 27 is filled with phase change material, which can absorb and release heat. During the material drying process in the drying box 1, the phase change material in the energy storage ball 27 begins to absorb heat and store it; when the control panel 31 is turned on, the energy storage ball 27 flows from the placement cavity 30 into the energy storage tube 28, and the inner diameter size of the energy storage tube 28 is only large enough to accommodate one energy storage ball 27.

[0042] Reference Figure 1 and Figure 3, because there is moisture in the mixing box 23 or when moisture enters the mixing box 23 due to employee misoperation, although the moisture is not much, it will still affect the material. Therefore, it is still necessary to detect the moisture of the material during the mixing process; the sampling inspection mechanism includes a sampling inspection tube 40, a sampling inspection member 41, two traction rollers 42, two traction motors and a sampling inspection rod 43 that is lifted and arranged in the mixing box 23. The sampling inspection tube 40 moves in a vertical direction and is opened downward. The sampling inspection tube 40 is provided with a sampling inspection cavity 45 in the closed position. The sampling inspection cavity 45 is connected to the inner cavity of the sampling inspection tube 40 by a through hole 44. The sampling inspection rod 43 is lifted and arranged in the sampling inspection cavity 45. The lifting and lowering of the sampling inspection rod 43 and the sampling inspection tube 40 are It can be achieved by an electric push rod. Two traction rollers 42 are rotatably arranged in the sampling chamber 45. Two traction motors are installed in the sampling chamber 45. The traction motor controls the rotation of the traction rollers 42. The sampling piece 41 still uses cobaltous chloride test paper. When it is necessary to sample the material, the sampling tube 40 is inserted into the material. The material enters the sampling tube 40. At this time, the sampling rod 43 descends and the sampling piece 41 is inserted into the material. If there is moisture in the material, the sampling piece 41 changes color. In this embodiment, the sampling piece 41 can also be identified by a color sensor, and the test paper can also be photographed by a camera. Regardless of the color sensor or the camera, if it is determined that the test paper has changed, it is necessary to open the control panel 31 and put the energy storage ball 27 into the energy storage tube 28.

[0043] Reference Figure 1 and Figure 4 The heating mechanism includes a plurality of heating chambers 33 and an ejection assembly for ejecting the energy storage ball 27 into the heating chamber 33. The heating chamber 33 is provided in plurality, and is determined according to the number of layers of the stirring blades 25. The plurality of stirring blades 25 on the same horizontal plane are divided into a group. For example, the plurality of stirring blades 25 are respectively located on three horizontal planes, and the plurality of stirring blades 25 are divided into three groups. One stirring blade 25 in each group of stirring blades 25 is hollow. Since the stirring blade 25 is connected to the heating chamber 33, in order to avoid the three heating chambers 33 being unable to be staggered, it is necessary to stipulate that the three hollow stirring blades 25 cannot be in the same column. Stirring blades 25 located in different columns are selected, and the temperature rising chamber 33 is set to be L-shaped. The temperature rising chamber 33 includes a horizontal section and a vertical section. The horizontal section is connected to one end of the opening of the energy storage tube 28, and each hollow stirring blade 25 is connected to the vertical section of the corresponding temperature rising chamber 33. In order to facilitate the energy storage ball 27 to smoothly enter the corresponding stirring blade 25, the stirring blade 25 is inclined and gradually lowered toward the position away from the stirring rod 24, but the inclination angle of the stirring blade 25 is less than or equal to 5°, and both the connection positions of the energy storage tube 28 and the horizontal section of the temperature rising chamber 33 and the vertical section of the temperature rising chamber 33 and the stirring blade 25 are smoothly set.

[0044] Reference Figure 1 and Figure 4 The ejection assembly includes an ejection rod 34, a reciprocating block 35 fixedly connected to the side wall of the ejection rod 34, an electromagnet 36, and a reciprocating member 37 for realizing the reciprocating motion of the electromagnet 36. The ejection rod 34 is elastically arranged at the end of the energy storage tube 28 away from the stirring rod 24, the electromagnet 36 adsorbs the reciprocating block 35, and the ejection rod 34 faces the energy storage ball 27; the reciprocating member 37 is arranged as an electric push rod or a cylinder, and the tail end of the ejection rod 34 is fixedly connected to the closed end of the energy storage tube 28 with a spring, the electromagnet 36 adsorbs the reciprocating block 35, and the front end of the ejection rod 34 faces the energy storage ball 27. In the initial state, the reciprocating member 37 adsorbs the reciprocating block 35 through the electromagnet 36. At this time, the ejection rod 34 is located at the rear of the placement cavity 30. When the control board 3 At the beginning, the energy storage ball 27 flows into the energy storage tube 28, and the opening of the horizontal section of the temperature rising chamber 33 on the stirring rod 24 faces the energy storage tube 28. After the electromagnet 36 is powered off, the ejection rod 34 impacts the energy storage ball 27, and the energy storage ball 27 enters the horizontal section of the temperature rising chamber 33 from the energy storage tube 28, and enters the corresponding stirring blade 25 after passing through the vertical section. The end of the stirring blade 25 can be opened by a thread to facilitate the removal of the energy storage ball 27. As the energy storage ball 27 enters the stirring blade 25, heat transfer occurs between the phase change material and the material, and the phase change material begins to release heat. When the energy storage balls 27 on all the stirring blades 25 are in place, the stirring blades 25 continue to stir the material. By stirring and heating the material, the moisture in the material can be quickly removed.

[0045] Reference Figure 1 and Figure 4 The temperature rising chamber 33 is hinged with an elastic sheet 38 at the opening of the horizontal section thereof, and a proximity switch 39 is installed on the upper side wall of the horizontal section of the temperature rising chamber 33. The proximity switch 39 is electrically connected to a display light 46. The elastic sheet 38 is made of a lightweight material to avoid affecting the normal entry of the energy storage ball 27 into the temperature rising chamber 33. The axial direction of the hinge axis of the elastic sheet 38 is perpendicular to the length direction of the energy storage tube 28. When the energy storage ball 27 passes through the elastic sheet 38, the elastic sheet 38 swings to abut against the proximity switch 39. The proximity switch 39 and the display light 46 are controlled and connected through a PLC controller, that is, when the energy storage ball 27 enters the temperature rising chamber 33, the staff knows that the energy storage ball 27 has entered the energy storage chamber. If the display light 46 is not on, maintenance is required.

[0046] The implementation principle of a coarse denier polypropylene staple fiber processing equipment in an embodiment of the present application is as follows: the drying sheet 7 is adapted to the size inside the drying box 1, that is, there is a small gap between the two ends of the drying sheet 7 and the two ends of the drying box 1 and between the side wall of the drying sheet 7 and the side wall of the drying box 1, so that the drying sheet 7 can ensure that the material in the drying box 1 is fully stirred during the rotation process to improve the drying efficiency. During the drying process, it is necessary to keep the material submerged above the drying rod 6 and lower than the upper side wall of the drying box 1, leaving sufficient time for the material to contact with the blown hot air. During the stirring of the material by the drying sheet 7, part of the material will follow the gap between the two adjacent drying sheets 7 and the drying rod 6 and move to the upper side, that is, close to the position where the hot air is blown into the air duct 5. As the drying rod 6 continues to rotate, the material falls toward the drying box 1. In this process, the material is fully in contact with the hot air, which can greatly improve the drying efficiency.

[0047] When the material falls from the detection port 10 into the detection tube 12, at the same time, the power piece 15 controls the power block to move in the reaction tank 21 until the reaction chamber 20 moves to a position corresponding to the inner cavity of the detection tube 12. At this time, the test paper 16 is located on the reaction block 14, and the winding ropes 18 at both ends pass through the gap between the reaction block 14 and the reaction tank 21. Since the opening area of ​​the reaction chamber 20 is smaller than the area of ​​the detection tube 12, the material entering the reaction chamber 20 is flatly rolled on the test paper 16. The test paper 16 adopts cobalt chloride test paper 16. When the material still contains moisture, the test paper 16 changes color. The color sensor 19 is connected to a buzzer through PLC control. At this time, the color sensor 19 is triggered and the buzzer sounds an alarm, and the material needs to be dried further; if the test paper 16 does not change color, the material can be passed into the stirring device.

[0048] If there is moisture in the material and the sampling piece 41 changes color, it is necessary to open the control panel 31 and put the energy storage ball 27 into the energy storage tube 28 so that the opening of the horizontal section of the heating chamber 33 on the stirring rod 24 faces the energy storage tube 28. After the electromagnet 36 is powered off, the ejection rod 34 impacts the energy storage ball 27, and the energy storage ball 27 enters the horizontal section of the heating chamber 33 from the energy storage tube 28, and enters the corresponding stirring blade 25 after passing through the vertical section. The end of the stirring blade 25 can be opened by a thread to facilitate the removal of the energy storage ball 27. As the energy storage ball 27 enters the stirring blade 25, heat transfer occurs between the phase change material and the material, and the phase change material begins to release heat. When the energy storage balls 27 on all the stirring blades 25 are in place, the stirring blades 25 continue to stir the material. By stirring and heating the material, moisture in the material can be quickly removed.

[0049] Embodiment 2

[0050] The present application embodiment discloses a method for processing coarse denier polypropylene staple fibers. Figure 1A method for processing coarse denier polypropylene staple fibers comprises the following steps:

[0051] S1. Drying: Drying the PP slices and cooling masterbatch; during the process of the drying sheet 7 stirring the material, part of the material will follow the gap between the two adjacent drying sheets 7 and the drying rod 6 and move to the upper side, that is, close to the position where the hot air is blown into the air duct 5. As the drying rod 6 continues to rotate, the material falls into the drying box 1. In this process, the material is fully in contact with the hot air, which can greatly improve the drying efficiency.

[0052] S2, stirring: the dried PP slices and the cooling masterbatch are mixed in a mixing box 23 according to the proportion to obtain a mixture; if the sampled material still contains moisture during the mixing process, it is necessary to control the energy storage balls 27 on all the stirring blades 25 to be in place, and the stirring blades 25 continue to stir the material. By stirring and heating the material, the moisture in the material can be quickly removed.

[0053] S3, melt spinning: the mixed material in S2 is fed into a spinning machine, the screw temperature in the spinning machine is set to 240°C in zone 1, 250°C in zone 2, 260°C in zone 3, 270°C in zone 4, 275°C in zone 5, 280°C in zone 6, 280°C in zone 7, and 280°C in zone 8, the filter temperature is set to 280°C, the melt pipe temperature is set to 235°C, the spinning box is set to 210°C, the spinning speed is 7.5 m / min, the annular air speed is 1.0 m / s, the annular air temperature is 22°C, the spinneret holes are 4000, and the hole diameter is 0.8 mm;

[0054] S4, spinning and drawing treatment: the spun yarn after cooling in S3 is sequentially subjected to front oiling treatment (oiling roller), godet roller guiding (godet roller), slow drawing (first drawing machine), fast drawing (second drawing machine), rear oiling treatment (oiling roller), and crimping treatment (crimping machine). The concentration of spinning oil used in the front oiling treatment and the rear oiling treatment is 7%, the drafting multiples of fast drawing and slow drawing are set to 4.2 times, and the slow drawing speed is 7.5 meters per minute;

[0055] S5, heat setting: heat setting the spun yarn after crimping treatment in S4, the heat setting temperature is 100°C, and the duration is 12 minutes;

[0056] S6, cutting and packing: the spinning after heat setting in S5 is cut and packed to obtain the coarse denier polypropylene staple fiber. The fiber denier produced by the above processing method is 50 to 120 denier, which can be used as carpet and mixed with glass fiber to make glass fiber mat. The processing method of this process is simple and low in cost. The coarse denier polypropylene staple fiber produced has complete specifications, which solves the market demand for coarse denier polypropylene staple fiber.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A coarse denier polypropylene staple fiber processing equipment, characterized in that: The invention comprises a drying device, a stirring device, a spinning device, a heat setting device and a cutting device, wherein the drying device is provided with a drying box (1), a heating mechanism for heating the drying box (1), a detection mechanism for detecting whether the material in the drying box (1) is dried, and an energy storage mechanism for storing energy; The heating mechanism comprises an air supply mechanism arranged in an external environment, a heating box (3), a heating element (4) and an air duct (5); the drying box (1) is further provided with a drying rod (6) rotatably connected to the drying box (1), a plurality of drying sheets (7) and a drying motor for driving the drying rod (6) to rotate; the plurality of drying sheets (7) are fixed at equal intervals on the outer wall of the drying rod (6); the drying rod (6) is arranged horizontally; one end of the air duct (5) is connected to the heating box (3); the other end of the air duct (5) is arranged on the top of the drying box (1); the drying box (1) is placed on the stirring device The drying box (1) is provided with a discharge port (9) at the bottom, the discharge port (9) is provided with a first electromagnetic valve (8), and the heating element (4) is installed in the heating box (3); the detection mechanism comprises a detection port (10) also provided at the bottom side of the drying box (1), a second electromagnetic valve (11) provided on the detection port (10), a detection tube (12) connected to the detection port (10), and a reaction component for detecting whether the material contains water, the detection tube (12) is arranged obliquely, the upper end of the detection tube (12) is connected to the detection port (10), and the bottom end of the detection tube (12) is closed. The reaction assembly comprises a reaction box (13) fixedly connected to the bottom side of the detection tube (12), a reaction block (14), a power piece (15) for controlling the movement of the reaction block (14), a plurality of test papers (16), a winding portion for winding the test papers (16), and a color sensor (19); the reaction block (14) is provided with a reaction chamber (20); the reaction block (14) and the reaction chamber (20) are both arranged parallel to the detection tube (12); the detection tube (12) is provided with a reaction groove (21) for the movement of the reaction block (14); the reaction block (14) is arranged in the reaction groove (21) ), the test paper (16) is attached to the bottom of the reaction chamber (20), the reaction block (14) is provided with a mounting hole (22) on the bottom wall of the reaction chamber (20), the color sensor (19) is installed in the mounting hole (22) and the color sensor (19) is directly opposite to the test paper (16), the opening size of the reaction chamber (20) is smaller than the opening size of the detection tube (12), and when the upper side wall of the reaction block (14) is attached to the upper side of the inner wall of the detection tube (12), the bottom wall of the reaction chamber (20) is flush with the bottom wall of the detection tube (12);The stirring device comprises a stirring box (23), a stirring mechanism arranged in the stirring box (23), a sampling mechanism for sampling materials in the stirring box (23), and a heating mechanism for heating the stirring mechanism, the energy storage mechanism provides a heat source for the heating mechanism, the sampling mechanism controls the operation of the heating mechanism, the stirring mechanism comprises a stirring rod (24), a plurality of stirring blades (25), and a stirring motor (26) for controlling the rotation of the stirring rod (24), the stirring motor (26) is installed on the stirring box (23), the stirring rod (24) rotates in the stirring box (23), and the plurality of stirring blades (25) are fixed on the outside of the stirring rod (24); the energy storage mechanism comprises a plurality of stirring blades (25) and a stirring motor (26) for controlling the rotation of the stirring rod (24); ... An energy storage ball (27) and an energy storage tube (28), the upper side wall of the stirring box (23) is provided with an interlayer (29), the energy storage tube (28) is installed in the interlayer (29), one end of the energy storage tube (28) is opened and faces the outer wall of the stirring rod (24), the inner wall of the heating box (3) is provided with a placement cavity (30) for placing the energy storage ball (27), the stirring box (23) is slidably provided with a control board (31) at the open end of the placement cavity (30), the energy storage ball (27) is filled with phase change material, the energy storage ball (27) flows from the placement cavity (30) into the energy storage tube (28), and only one energy storage ball (27) can be placed in the energy storage tube (28). ; 2. The coarse denier polypropylene staple fiber processing equipment according to claim 1, characterized in that: The winding part comprises a plurality of winding ropes (18), two winding rollers (17) and two winding motors; the winding rollers (17) rotate in the reaction box (13) and the two winding rollers (17) are respectively located at two ends of the reaction block (14); the plurality of winding ropes (18) are connected to a plurality of test papers (16) at intervals; the two winding ropes (18) located at the two ends are respectively fixedly connected to two ends of the two winding rollers (17); the winding motor is installed in the reaction box (13) and is used to control the rotation of the winding rollers (17).

3. The coarse denier polypropylene staple fiber processing equipment according to claim 2, characterized in that: The heating mechanism comprises a plurality of heating chambers (33) and an ejection assembly for ejecting the energy storage ball (27) into the heating chamber (33); the heating chamber (33) is arranged in an L shape; the heating chamber (33) comprises a horizontal section and a vertical section; the horizontal section is directly opposite to the open end of the energy storage tube (28); a plurality of stirring blades (25) are arranged in the same horizontal plane and are grouped together; one stirring blade (25) in each group of stirring blades (25) is hollow and connected to the vertical section of the corresponding heating chamber (33); each hollow stirring blade (25) has the corresponding energy storage ball (27) flowing into it through the corresponding heating chamber (33).

4. The coarse denier polypropylene staple fiber processing equipment according to claim 3, characterized in that: The ejection assembly comprises an ejection rod (34), a reciprocating block (35) fixedly connected to a side wall of the ejection rod (34), an electromagnet (36), and a reciprocating member (37) for realizing reciprocating motion of the electromagnet (36); the ejection rod (34) is elastically arranged at one end of the energy storage tube (28) away from the stirring rod (24); the electromagnet (36) adsorbs the reciprocating block (35); and the ejection rod (34) faces the energy storage ball (27).

5. The coarse denier polypropylene staple fiber processing equipment according to claim 4, characterized in that: The temperature rising chamber (33) is hinged with an elastic sheet (38) at the opening of the horizontal section thereof, and a proximity switch (39) is installed on the upper side wall of the horizontal section of the temperature rising chamber (33), and the proximity switch (39) is electrically connected to a display light (46).

6. A method for processing coarse denier polypropylene staple fibers, based on the coarse denier polypropylene staple fiber processing equipment according to any one of claims 1 to 5, characterized in that: The steps include: S1. Drying: Drying the PP slices and cooling masterbatch; S2, stirring: adding the dried PP slices and the cooling masterbatch into a stirring box (23) according to a proportion and stirring to obtain a mixture; S3, melt spinning: the mixed material in S2 is fed into a spinning machine, the screw temperature in the spinning machine is set to 240°C in zone 1, 250°C in zone 2, 260°C in zone 3, 270°C in zone 4, 275°C in zone 5, 280°C in zone 6, 280°C in zone 7, and 280°C in zone 8, the filter temperature is set to 280°C, the melt pipe temperature is set to 235°C, the spinning box is set to 210°C, the spinning speed is 7.5 m / min, the annular air speed is 1.0 m / s, the annular air temperature is 22°C, the spinneret holes are 4000, and the hole diameter is 0.8 mm; S4, spinning and drawing treatment: the spun yarn after cooling in S3 is sequentially passed through an oiling roller for pre-oiling treatment, a godet roller for guide wire, a first drawing machine for slow drawing, a second drawing machine for fast drawing, an oiling roller for post-oiling treatment, and a crimping machine for crimping treatment. The concentration of the spinning oil used in the pre-oiling treatment and the post-oiling treatment is 7%, the drafting multiples of the fast drawing and the slow drawing are set to 4.2 times, and the slow drawing speed is 7.5 meters per minute; S5, heat setting: heat setting the spun yarn after crimping treatment in S4, the heat setting temperature is 100°C, and the duration is 12 minutes; S6, cutting and packaging: the spinning fibers heat-set in S5 are cut and packaged to obtain the coarse-denier polypropylene staple fibers.

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