Recovery device for spinning process and spinning process equipment

Abstract

The embodiment of the utility model provides a recycling device for a spinning process and spinning process equipment, and relates to the technical field of spinning equipment. The recovery device comprises a suction cavity base body provided with a tow via hole for the tow to pass through; a negative pressure area is formed in the inner space of the suction cavity base body, the negative pressure area is arranged in the circumferential direction of the tow via hole in a surrounding mode, and the negative pressure area communicates with the tow via hole. The suction box is connected with one side of the suction cavity base body; the axial direction of the suction box is perpendicular to the axial direction of the tow passing hole. The suction box is provided with an expansion section, and the area of the cross section of the expansion section is gradually reduced in the direction away from the suction cavity base body. The gas-solid separation assembly is connected with the end, away from the suction cavity base body, of the suction box and used for separating gas from the monomer particles and recycling the separated monomer particles. The exhaust pipeline is connected with the gas-solid separation assembly; and the negative pressure pump is used for providing negative pressure.

Description

Technical Field

[0001] This disclosure relates to the field of spinning equipment technology, and in particular to a recycling device and spinning process equipment for spinning processes. Background Technology

[0002] In the chemical fiber spinning process, cooling during melt spinning is generally achieved using air blowing. Controlling the airflow volume and direction is crucial for effective cooling. Currently, manufacturers employ a variety of air blowing cooling devices, the most common being the annular air blowing device.

[0003] In related technologies, devices that use ring-blown air to achieve filament towing and cooling in spinning production often require cooling air at a certain temperature to ensure filament towing formation. However, due to the special chemical cost and physical properties of fibers such as nylon, a large number of monomer floating particles are generated after the filament towing is ejected from the spinneret. These floating monomer particles cause a decrease in filament towing quality. Utility Model Content

[0004] This disclosure provides a recycling device and spinning equipment for a spinning process to overcome the problem that floating monomer particles can cause a decrease in the quality of the filament bundle.

[0005] As one aspect of this disclosure, an embodiment provides a recycling device for a spinning process, comprising: a suction chamber base, disposed between a spinning box and an annular blowing device; the suction chamber base having a filament through-hole for filament to pass through; a negative pressure zone formed within the internal space of the suction chamber base, the negative pressure zone being arranged circumferentially around the filament through-hole and communicating with the filament through-hole; a suction box connected to one side of the suction chamber base; the axial direction of the suction box being perpendicular to the axial direction of the filament through-hole; and the internal space of the suction box being connected to the spinning box. The internal space of the suction chamber substrate is interconnected; the suction box has an expansion section, the cross-sectional area of ​​which gradually decreases along the direction away from the suction chamber substrate; a gas-solid separation component is connected to one end of the suction box away from the suction chamber substrate; the gas-solid separation component is used to separate gas from monomer particles and to recover the separated monomer particles; an exhaust pipe is connected to the gas-solid separation component for discharging the gas discharged from the gas-solid separation component; a negative pressure pump is used to provide negative pressure so that the monomer particles entering the fiber tow through-hole can flow in the recovery device.

[0006] In some embodiments, the wall of the filament through hole is provided with a plurality of suction ports, such that the filament through hole communicates with the internal space of the suction cavity substrate through the suction ports; wherein at least two of the suction ports are distributed at circumferential intervals along the filament through hole.

[0007] In some embodiments, the suction chamber substrate is provided with a plurality of second bore posts, and a first bolt is inserted into the first bolt hole of the second bore post. The first bolt is used to connect the suction chamber substrate to at least one of the spinning box, heat insulation pad, aluminum plate, base plate and annular blower; wherein, at least one of the heat insulation pad, aluminum plate and base plate is provided between the spinning box and the annular blower.

[0008] In some embodiments, the suction box is detachably connected to the suction chamber substrate.

[0009] In some embodiments, the suction chamber substrate is provided with a first mounting base; the first mounting base is provided with a second bolt hole, wherein at least two of the second bolt holes are distributed at intervals along the axial direction of the filament through hole; the suction box has a second mounting base, in which a second bolt passes and engages with the second bolt hole; wherein the axial direction of the second bolt is parallel to the axial direction of the suction box.

[0010] In some embodiments, the recycling device for the spinning process further includes: a negative pressure sensor for detecting negative pressure; wherein the negative pressure sensor is disposed in the suction chamber substrate and is located near the fiber bundle through-hole.

[0011] In some embodiments, the suction box includes a first connecting section connected between the expansion section and the gas-solid separation component; the recovery device further includes an electromagnetic valve and a first controller, the electromagnetic valve being installed in the first connecting section, and the electromagnetic valve and the negative pressure sensor being electrically connected to the first controller respectively.

[0012] In some embodiments, the recycling device for the spinning process further includes: a second controller, electrically connected to the negative pressure sensor and the negative pressure pump respectively; wherein the negative pressure pump is connected between the exhaust pipe and the gas-solid separation component.

[0013] In some embodiments, the gas-solid separation assembly includes: a primary cyclone separator connected to the suction box for separating gas from particulate matter; the primary cyclone separator having a first outlet and a second outlet, the second outlet being located below the first outlet and at the bottom of the primary cyclone separator; a first recovery tank connected to the second outlet via a first discharge valve for recovering particulate matter discharged from the primary cyclone separator; a secondary cyclone separator connected to the first outlet of the primary cyclone separator for separating gas from particulate matter; the secondary cyclone separator having a third outlet and a fourth outlet, the fourth outlet being located below the third outlet and at the bottom of the secondary cyclone separator; and a second recovery tank connected to the fourth outlet via a second discharge valve for recovering particulate matter discharged from the secondary cyclone separator.

[0014] In some embodiments, the maximum diameter of the cylinder of the primary cyclone separator is greater than or equal to the maximum diameter of the cylinder of the secondary cyclone separator.

[0015] In some embodiments, the primary cyclone separator has a first straight section and a first conical section, the first straight section being located above the first conical section; the cross-sectional area of ​​the first conical section gradually decreases from top to bottom; the vertical length of the first straight section is less than the vertical length of the first conical section.

[0016] As another aspect of the present disclosure, an embodiment of the present disclosure provides a spinning process apparatus, comprising: a spinning box; an annular blowing device connected below the spinning box and spaced apart from the spinning box along the vertical direction; at least one of a heat insulation pad, an aluminum plate, and a base plate, located between the spinning box and the annular blowing device, for adjusting the distance between the spinning box and the annular blowing device; and a recycling device for the spinning process as described in any of the preceding claims, the recycling device being located between the spinning box and the annular blowing device.

[0017] The embodiments of this disclosure employ the above-described technical solution, which enables the suction, separation, and recovery of suspended monomer particles, thereby effectively preventing the scattered monomer particles from affecting the quality of the fiber bundle. Furthermore, the recovered monomer particles can be reused after post-processing, and the final emitted gas is clean and pollution-free.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. Further aspects, embodiments, and features of this disclosure will become readily apparent from the accompanying drawings and the following detailed description, in addition to the illustrative aspects, embodiments, and features described above. Attached Figure Description

[0019] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments according to this disclosure and should not be construed as limiting the scope of this disclosure.

[0020] Figure 1 A schematic diagram illustrating an application scenario of a recycling device according to an embodiment of the present disclosure is shown.

[0021] Figure 2 A schematic diagram of the structure of the suction chamber substrate in the recovery apparatus according to an embodiment of the present disclosure is shown;

[0022] Figure 3 This diagram shows a structural schematic of the suction chamber substrate and the suction box in a recovery apparatus according to an embodiment of the present disclosure;

[0023] Figure 4 This diagram shows another structural schematic of the suction chamber substrate and the suction box in the recovery apparatus according to an embodiment of the present disclosure;

[0024] Figure 5 A schematic diagram of the electrical connections of a recycling apparatus according to an embodiment of the present disclosure is shown.

[0025] Explanation of reference numerals in the attached drawings: 100-Suction chamber base; 101-Second orifice column; 102-First mounting base; 200-Suction box; 201-Expansion section; 202-First connecting section; 203-Second connecting section; 204-Second mounting base; 300-Gas-solid separation assembly; 301-First-stage cyclone separator; 302-First recovery tank; 303-First discharge valve; 304-Second-stage cyclone separator; 305-Second recovery tank; 306-Second discharge valve; 400-Exhaust pipe; 510-Negative pressure pump; 520-Negative pressure sensor; 530-First controller; 540-Second controller; 550-Solenoid valve; 600-Spinning box; 601-Spinneret; 700-Annular blower; 810-Heat insulation pad; 820-Base plate. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this disclosure. Therefore, the drawings and description are to be considered exemplary in nature and not restrictive.

[0027] Figure 1 This diagram illustrates an application scenario of the recycling device according to an embodiment of the present disclosure; wherein, Figure 1 The image shown can be a front view of the recycling device.

[0028] Please refer to Figure 1 This embodiment provides a recycling device for a spinning process, including: a suction chamber base 100, a suction box 200, a gas-solid separation component 300, an exhaust pipe 400, and a negative pressure pump 510.

[0029] The suction chamber substrate 100 is positioned between the spinning box 600 and the annular blowing device 700 to suction suspended monomer particles (also known as monomer dust, a type of polymer). The suction chamber substrate 100 has a cavity structure, with a hollow interior to facilitate the flow of gas or gas-solid mixtures. Alternatively, the suction chamber substrate 100 employs a fully enclosed annular structure, forming a negative pressure zone inside. When the filaments ejected from the spinneret 601 pass through this negative pressure zone, the suspended monomer particles are drawn away. The outer contour of the suction chamber substrate 100 can match the outer contour of the spinning box 600; for example, if the spinning box 600 is a quadrangular prism, the suction chamber substrate 100 will also be a quadrangular prism.

[0030] The suction chamber substrate 100 is provided with a filament through-hole, the filament through-hole being along the vertical direction (i.e.) Figure 1 A through-hole (running vertically) is provided for the filament bundle to pass through. The internal space of the suction chamber base 100 forms a negative pressure zone, which is arranged circumferentially around the filament bundle through-hole. This allows any individual particles entering the filament bundle through-hole and dispersing outwards to enter the internal space of the suction chamber base 100 and be discharged from it, ensuring uniform cooling of the filament bundle along the circumference. By appropriately setting the negative pressure, it avoids interfering with the filament bundle while effectively suctioning suspended individual particles.

[0031] In some possible implementations, the suction cavity substrate 100 can be a double-layer structure, that is, the suction cavity substrate 100 has an outer layer structure and an inner layer structure. At least one of the outer layer structure and the inner layer structure is generally annular. The upper and lower ends of the outer layer structure and the upper and lower ends of the inner layer structure are folded and connected in opposite directions. The inner layer structure forms a filament through hole. The outer structure and the inner structure form the internal space (i.e., the negative pressure zone) of the suction cavity substrate 100.

[0032] In some examples, the filament through-holes can be elliptical or oblong, and each through-hole can allow multiple filaments to pass through. Optionally, each oblong filament through-hole corresponds to one or more spinnerets 601 in the spinning box 600; for example, each oblong filament through-hole can correspond to six spinnerets 601 arranged side by side, and allow six filaments to pass through. There can be one or more oblong filament through-holes; when there are multiple filament through-holes, the multiple filament through-holes can be arranged side by side.

[0033] In other examples, each filament through-hole allows one filament to pass through. The filament through-hole can be circular or polygonal, etc., and can be set according to actual needs, as long as the filaments can pass through smoothly. For example, if there are six filaments ejected from the spinning box 600, and the six filaments are arranged side-by-side, then the suction chamber substrate 100 has six filament through-holes arranged side-by-side, each allowing one filament to pass through. The specific number and distribution of the filament through-holes can be set according to actual needs.

[0034] The filament through-hole has multiple suction ports on its walls, allowing the filament through-hole to communicate with the internal space of the suction chamber substrate 100 through these suction ports. These suction ports can be circular, elliptical, or polygonal, and their specific shape and size can be set according to actual needs, as long as they allow suspended individual particles to pass through smoothly.

[0035] At least two suction ports are spaced apart circumferentially along the filament through-holes, so that the filament through-holes have multiple channels communicating with the internal space of the suction chamber substrate 100 along the circumferential direction. In this way, the individual particles that are scattered in all directions can enter the internal space of the suction chamber substrate 100 through the suction ports, and it is beneficial to ensure that the cooling effect of the filament bundle is uniform along the circumferential direction.

[0036] For example, taking a circular hole as the through-hole of the filament bundle, multiple suction ports can be evenly distributed along multiple preset circumferences. The multiple preset circumferences are distributed at vertical intervals, and each preset circumference has multiple suction ports evenly distributed. The number of preset circumferences and the number of suction ports distributed on each preset circumference can be set according to actual needs.

[0037] The suction ports distributed on two adjacent preset circumferences can be staggered, or the suction ports distributed on two adjacent preset circumferences can be arranged opposite each other.

[0038] Optionally, at least part of the suction port is positioned near the top of the filament through-hole.

[0039] In other possible implementations, the suction chamber substrate 100 can be a single-layer structure with a closed chamber wall. The top and bottom walls of the chamber wall each have openings, and these openings communicate with each other to form a filament through-hole. This filament through-hole is located between the top and bottom walls and communicates with the internal space of the suction chamber substrate 100. This allows individual particles entering the filament through-hole and dispersing outwards to enter the internal space of the suction chamber substrate 100, ensuring uniform cooling of the filaments along the circumference. The filament through-hole can be an elliptical or oblong hole, and each through-hole can allow multiple filaments to pass through.

[0040] A cavity outlet is provided on one side of the suction cavity base 100. The suction box 200 is connected to one side of the suction cavity base 100, and the box inlet of the suction box 200 corresponds to the cavity outlet, so that the internal space of the suction box 200 is connected to the internal space of the suction cavity base 100.

[0041] The suction box 200 is generally an axisymmetric component; for example, at least a portion of the suction box 200 is conical. The axial direction of the suction box 200 is perpendicular to the axial direction of the filament through-hole. The suction box 200 has an expansion section 201, the cross-sectional area of ​​which gradually decreases along the direction away from the suction chamber base 100; wherein the cross-section of the expansion section 201 is perpendicular to the axial direction of the suction box 200. The expansion section 201 can be conical, specifically, it is generally funnel-shaped. The specific dimensions of the expansion section 201 can be set according to actual needs. By making the above-described configuration of the suction box 200, the negative pressure effect can be improved, the suction effect of single particles can be improved, and energy saving is beneficial.

[0042] Optionally, the suction box 200 can be detachably connected to the suction chamber base 100 to improve ease of assembly and disassembly. The suction box 200 can be detachably connected to the suction chamber base 100 by means of plug-in or bolt connection.

[0043] In addition, a sealing gasket can be provided between the suction box 200 and the suction chamber base 100.

[0044] The gas-solid separation component 300 is connected to the end of the suction box 200 away from the suction chamber base 100; the gas-solid separation component 300 is used to separate gas from monomer particles and to recover the separated monomer particles.

[0045] For example, the gas-solid separation assembly 300 includes a gas-solid separator and a recovery tank, with the gas-solid separator connected to the recovery tank via a discharge valve. The solids, i.e., the individual particulate matter, separated by the gas-solid separator enter the recovery tank, while the separated gas is discharged.

[0046] The gas-solid separation assembly 300 may include one or more gas-solid separators, and the number of recovery tanks may be the same as the number of gas-solid separators. When there are multiple gas-solid separators, they are connected in series, meaning that the gas outlet of the current gas-solid separator is connected to the inlet of the next gas-solid separator.

[0047] The exhaust pipe 400 is connected to the gas-solid separation assembly 300 for discharging the gas discharged from the gas-solid separation assembly 300.

[0048] The negative pressure pump 510 is used to provide negative pressure, allowing the monomer particles entering the fiber bundle through-hole to flow in the recovery device. The negative pressure pump 510 can be connected between the exhaust pipe 400 and the gas-solid separation component 300, or connected within the exhaust pipe 400. The specific location of the negative pressure pump 510 can be set according to actual needs.

[0049] Optionally, a bag filter can be installed at the output end of the exhaust pipe 400. The bag filter is used to filter the gas discharged from the exhaust pipe 400 to ensure that the final emitted gas is free of particulate matter.

[0050] In this embodiment, when the negative pressure pump 510 is in operation, the suspended monomer particles entering the filament through-hole will enter the internal space of the suction chamber substrate 100, then the internal space of the suction box 200, and further enter the gas-solid separation component 300 for gas-solid separation. The separated solids, i.e., the monomer particles, will be recovered, and the separated gas will be discharged. The recovered monomer particles can be reused after post-processing, and the final discharged gas is clean and pollution-free.

[0051] The recycling device in this embodiment, through the above-described configuration, can suck, separate, and recycle suspended monomer particles, thereby effectively preventing the scattered monomer particles from affecting the quality of the fiber bundle. Furthermore, the recycled monomer particles can be reused after post-processing, and the final emitted gas is clean and pollution-free.

[0052] Figure 2 A schematic diagram of the structure of the suction chamber substrate in the recovery apparatus according to an embodiment of the present disclosure is shown; wherein, Figure 2 This can be a side view of the suction chamber substrate.

[0053] Please refer to Figure 2 And continue to refer to Figure 1 In some embodiments, the suction cavity base 100 is provided with a plurality of second perforated posts 101, the axial direction of which is parallel to the vertical direction. Optionally, the plurality of second perforated posts 101 are respectively disposed near the edge of the suction cavity base 100. For example, the outer contour of the suction cavity base 100 is prism-shaped, and the plurality of second perforated posts 101 are respectively disposed near two opposite long edges of the suction cavity base 100; for example, three second perforated posts 101 are evenly distributed near one long edge, and the other three second perforated posts 101 are evenly distributed near the other edge.

[0054] Each of the second-hole columns 101 is provided with a first bolt hole, which can be through-hole. A first bolt is inserted through the first bolt hole, and the first bolt is used to connect the suction chamber base 100 to at least one of the spinning box 600, heat insulation pad 810, aluminum plate, base plate 820 and annular blower 700; wherein, at least one of the heat insulation pad 810, aluminum plate and base plate 820 is provided between the spinning box 600 and the annular blower 700.

[0055] In practice, the number of heat insulation pads 810 and aluminum plates can be set according to actual needs. In scenarios where heat insulation pads 810 and aluminum plates are not used, the suction chamber base 100 can be connected to the base plate 820 via the first bolt, or the suction chamber base 100 can be connected to the base plate 820 and the annular blowing device 700 via the first bolt, or the suction chamber base 100 can be connected to the spinning box 600 via the first bolt. In scenarios where heat insulation pads 810 are used, and heat insulation pads 810 are respectively provided above and below the suction chamber base 100, the suction chamber base 100 can be connected to at least one heat insulation pad 810 located above, and to the heat insulation pad 810 located below and the base plate 820 via the first bolt.

[0056] It is understandable that the suction cavity base 100 and the adjacent components are connected using the first bolt. The components adjacent to the suction cavity base 100 can be selected according to actual needs, as long as the installation reliability of the suction cavity base 100 can be guaranteed. A sealing gasket can be provided between the suction cavity base 100 and the adjacent components to improve the sealing effect.

[0057] It should be noted that the heat insulation pad 810 and the aluminum plate can be removed according to the vertical thickness of the suction chamber base 100. The removed thickness is the same as the thickness of the suction chamber base 100 to ensure that the windless zone of spinning remains unchanged, thus ensuring that product quality and production stability are not affected. Furthermore, if the windless zone needs to be adjusted according to different product requirements, the heat insulation pad 810, aluminum plate, and suction chamber base 100 can be freely combined to obtain process conditions with different windless zone lengths, meeting the process requirements of various products.

[0058] To ensure the airless zone of the spinning process remains unchanged, a portion of the heat insulation pads 810 or aluminum plates are removed, with the total height of the removed parts matching the height of the suction chamber base 100, thus ensuring the airless zone remains unchanged. The remaining heat insulation pads 810 or aluminum plates, along with the suction chamber base 100 and the base plate 820, are then fixed to the housing. Specifically, these components are secured inside the housing via the second perforated post 101. The arrangement of the heat insulation pads 810 or aluminum plates and the suction chamber base 100 can be customized according to actual needs.

[0059] Figure 3This diagram shows a structural schematic of the suction chamber substrate and the suction box in a recovery apparatus according to an embodiment of the present disclosure; Figure 4 Another structural schematic diagram of the suction chamber substrate and suction box in the recovery device according to an embodiment of the present disclosure is shown. Figure 3 A side view of the connection structure between the suction chamber base and the suction box; Figure 4 This is a front view of the connection structure between the suction chamber substrate and the suction box.

[0060] Please refer to Figure 3 and Figure 4 And continue to refer to Figure 1 In some embodiments, the suction box 200 and the suction cavity base 100 are detachably connected, which can improve the convenience of disassembly and assembly, and facilitate the replacement of the suction box 200 or the suction cavity base 100 separately, thereby reducing maintenance costs.

[0061] In some examples, the suction chamber base 100 has multiple first mounting seats 102 on the side facing the suction box 200; the first mounting seats 102 have second bolt holes, the axis of which is parallel to the axis of the suction box 200. In specific implementations, the portion of the suction chamber base 100 that forms the second bolt holes is the first mounting seat 102; or, the first mounting seat 102 is a block structure, and the first mounting seat 102 is welded to or integrally formed with the suction chamber base 100.

[0062] In other examples, the first mounting base 102 is an annular structure and is welded and fixed to the suction cavity base 100 or integrally formed therewith; the first mounting base 102 is provided with a plurality of second bolt holes.

[0063] To improve the connection reliability between the suction chamber base 100 and the suction box 200, at least two second bolt holes are distributed at intervals along the axial direction of the filament through-hole. For example, there may be four second bolt holes, with two second bolt holes located near the upper edge of the suction chamber base 100 and evenly distributed, and the other two second bolt holes located near the lower edge of the suction chamber base 100 and evenly distributed. Alternatively, there may be six second bolt holes, with three second bolt holes located near the upper edge of the suction chamber base 100 and evenly distributed, and the other three second bolt holes located near the lower edge of the suction chamber base 100 and evenly distributed.

[0064] In practice, the spinning box 600, heat insulation pad 810, aluminum plate, and annular blower 700 are all housed inside the outer casing, which enhances overall integrity and provides protection. To facilitate the installation of the suction chamber base 100, an installation window can be provided on the side of the outer casing facing the suction box 200, allowing for easy installation and removal of the suction chamber base 100 through the installation window, and also allowing the second bolt hole to be exposed through the installation window.

[0065] The suction box 200 is provided with a second mounting base 204. There may be multiple second mounting bases 204, which may be block-shaped, and the distribution of the multiple second mounting bases 204 corresponds to the distribution of the second bolt holes. Alternatively, there may be a single second mounting base 204, which is a ring-shaped structure. The second mounting base 204 may be welded to the suction chamber base 100 or integrally formed therefrom.

[0066] A second bolt is inserted through the second mounting base 204, and the second bolt engages with the second bolt hole in the first mounting base 102; wherein, the axial direction of the second bolt is parallel to the axial direction of the suction box 200.

[0067] Optionally, an annular sealing gasket may be provided between the first mounting base 102 and the second mounting base 204. The sealing gasket has a bolt through hole for the second bolt to pass through, and the central hole of the sealing gasket allows gas or a gas-solid mixture to pass through.

[0068] Optionally, to facilitate the installation of the second mounting base 204, the suction box 200 further includes a second connecting section 203, which can be connected to the end of the expansion section 201 opposite to the first connecting section 202. The second connecting section 203 can be connected to the second mounting base 204. The second mounting base 204, the second connecting section 203, the expansion section 201, and the first connecting section 202 can be integrally installed.

[0069] In some embodiments, the recycling device for the spinning process further includes a negative pressure sensor 520 for detecting the negative pressure in the area, thereby providing a reliable basis for negative pressure control.

[0070] The negative pressure sensor 520 is located in the suction chamber substrate 100 and close to the filament through hole, so as to obtain the negative pressure around the filament more accurately.

[0071] Optionally, there may be multiple negative pressure sensors 520, with at least two negative pressure sensors 520 disposed in the suction chamber base 100, and the distance between one negative pressure sensor 520 and the suction box 200 is greater than the distance between the other negative pressure sensor 520 and the suction box 200.

[0072] For example, the suction chamber substrate 100 has a central region and a peripheral region surrounding the central region. A filament through-hole is disposed in the central region, and multiple second post-holes 101 are located in the peripheral region. The central region has a first edge facing the suction box 200 and a second edge away from the suction box 200. One negative pressure sensor 520 is disposed near the first edge, and another negative pressure sensor 520 is disposed near the second edge. Thus, negative pressure control can be performed based on the detection structure of the multiple negative pressure sensors 520. For example, when the difference in detection results between the negative pressure sensors 520 located on opposite sides of the central region is large, the negative pressure can be reduced by the first controller 530 or the second controller 540.

[0073] In some examples, the suction box 200 includes a first connecting section 202 that connects the expansion section 201 to the gas-solid separation assembly 300. The expansion section 201 may be conical, and the first connecting section 202 may be cylindrical.

[0074] Please refer to Figure 5 The recovery device also includes a solenoid valve 550 and a first controller 530. The solenoid valve 550 is installed in the first connecting section 202. The solenoid valve 550 and the negative pressure sensor 520 are electrically connected to the first controller 530, enabling the first controller 530 to control the opening degree of the solenoid valve 550 based on the detection result of the negative pressure sensor 520, thereby achieving the purpose of adjusting the negative pressure. The first controller 530 can be a distributed control system (DCS).

[0075] In some examples, the recycling device for the spinning process further includes a second controller 540, which is electrically connected to both the negative pressure sensor 520 and the negative pressure pump 510. The second controller 540 controls the operating state (e.g., frequency) of the negative pressure pump 510 based on the detection results of the negative pressure sensor 520, thereby adjusting the negative pressure. The second controller 540 can be a DCS (Distributed Control System).

[0076] In specific implementation, when the difference between the current detection result obtained from the negative pressure sensor 520 and the target value is small, the first controller 530 can control the opening of the solenoid valve 550 until the detection result meets the requirements. When the difference between the current detection result obtained from the negative pressure sensor 520 and the target value is large, the second controller 540 can control the negative pressure pump 510 to adjust its working state until the detection result meets the requirements; or, when the difference between the current detection result obtained from the negative pressure sensor 520 and the target value is large, the second controller 540 can control the negative pressure pump 510 to adjust its working state until the difference between the detection result and the target value is small, and then the first controller 530 can control the opening of the solenoid valve 550 until the detection result meets the requirements.

[0077] It is understood that the implementation process of negative pressure control based on the detection results of negative pressure sensor 520 is not limited to this; this embodiment is merely an example.

[0078] Optionally, the first controller 530 and the second controller 540 can be connected to the host computer for real-time monitoring and automatic control of multiple spinning stations in the spinning workshop.

[0079] In some embodiments, the gas-solid separation assembly 300 includes: a primary cyclone separator 301 connected to a suction box 200 for separating gas from individual particulate matter; the primary cyclone separator 301 has a first outlet and a second outlet, the second outlet being located below the first outlet and at the bottom of the primary cyclone separator 301; a first recovery tank 302 connected to the second outlet via a first discharge valve 303 for recovering individual particulate matter discharged from the primary cyclone separator 301; a secondary cyclone separator 304 connected to the first outlet of the primary cyclone separator 301 for separating gas from individual particulate matter; the secondary cyclone separator 304 has a third outlet and a fourth outlet, the fourth outlet being located below the third outlet and at the bottom of the secondary cyclone separator 304; and a second recovery tank 305 connected to the fourth outlet via a second discharge valve 306 for recovering individual particulate matter discharged from the secondary cyclone separator 304.

[0080] For example, the first-stage cyclone separator 301 can be cylindrical or prismatic. The first-stage cyclone separator 301 can have a first straight section and a first conical section, with the first straight section located above the first conical section; the cross-sectional area of ​​the first conical section gradually decreases from top to bottom. For example, the first straight section can be cylindrical; the first conical section can be conical, with its diameter gradually decreasing from top to bottom.

[0081] The vertical length of the first straight section is less than the vertical length of the first conical section. Optionally, the ratio of the length of the first straight section to the length of the first conical section is greater than or equal to one-third and less than or equal to two-thirds. For example, the length of the first straight section is half the length of the first conical section, or one-third the length of the first conical section, or two-thirds the length of the first conical section. The specific ratio of the length of the first straight section to the length of the first conical section can be set according to actual needs.

[0082] Taking a circular cross-section of the first-stage cyclone separator 301 as an example, the upper diameter of the first conical section is equal to the diameter of the first straight section. The ratio of the lower diameter of the first conical section to the diameter of the first straight section can be greater than or equal to 0.2 and less than or equal to 0.3; for example, the ratio can be 0.2, 0.25, or 0.3, or any two of these values. The specific ratio of the lower diameter of the first conical section to the diameter of the first straight section can be set according to actual needs.

[0083] The angle between the side of the first cone section and the central axis of the first-stage cyclone separator 301 can be greater than or equal to 10° and less than or equal to 30°. For example, the angle between the side of the first cone section and the central axis of the first-stage cyclone separator 301 can be 10°, 16°, 20°, 25°, or 30°, or any two of the above.

[0084] With the above configuration, the individual particles separated in the first-stage cyclone separator 301 can move to the bottom of the first-stage cyclone separator 301 under their own gravity and guided by the first cone section; when the first discharge valve 303 is open, the individual particles that have moved to the bottom of the first-stage cyclone separator 301 can further move to the first recovery tank 302 under their own gravity.

[0085] The first recycling tank 302 can be a cylindrical or prismatic tank. A connecting ring extending upwards is provided at the top opening of the first recycling tank 302, and a first discharge valve 303 can be installed on the connecting ring. The first discharge valve can be a manual valve or an electrically controlled valve.

[0086] The secondary cyclone separator 304 is connected to the first outlet of the primary cyclone separator 301 via a pipeline. The inlet of the secondary cyclone separator 304 can be located above the first outlet of the primary cyclone separator 301.

[0087] The secondary cyclone separator 304 may have a second straight section and a second conical section, with the second straight section located above the second conical section; the cross-sectional area of ​​the second conical section gradually decreases from top to bottom. For example, the second straight section may be cylindrical, the second conical section may be conical, and the diameter of the second conical section may gradually decrease from top to bottom.

[0088] The vertical length of the second straight section is less than the vertical length of the second conical section. Optionally, the ratio of the length of the second straight section to the length of the second conical section is greater than or equal to one-third and less than or equal to two-thirds. For example, the length of the second straight section is half the length of the second conical section, or one-third the length of the second straight section, or two-thirds the length of the second conical section. The specific ratio of the length of the second straight section to the length of the second conical section can be set according to actual needs.

[0089] Taking a circular cross-section as an example, the upper diameter of the second conical section is equal to the diameter of the second straight section. The ratio of the lower diameter of the second conical section to the diameter of the second straight section can be greater than or equal to 0.2 and less than or equal to 0.3; for example, the ratio can be 0.2, 0.25, or 0.3, or any two of these values. The specific ratio of the lower diameter of the second conical section to the diameter of the second straight section can be set according to actual needs.

[0090] The angle between the side of the second cone section and the central axis of the secondary cyclone separator 304 can be greater than or equal to 10° and less than or equal to 30°. For example, the angle between the side of the second cone section and the central axis of the secondary cyclone separator 304 can be 10°, 16°, 20°, 25°, or 30°, or any two of the above.

[0091] With the above configuration, the individual particles separated in the secondary cyclone separator 304 can move to the bottom of the secondary cyclone separator 304 under their own gravity and guided by the second cone section; when the second discharge valve 306 is open, the individual particles that have moved to the bottom of the secondary cyclone separator 304 can further move to the second recovery tank 305 under their own gravity.

[0092] The second recycling tank 305 can be a cylindrical or prismatic tank. A connecting ring extending upwards is provided at the top opening of the second recycling tank 305, and a second discharge valve 306 can be installed on the connecting ring. The second discharge valve can be a manual valve or an electrically controlled valve.

[0093] In some examples, the maximum diameter of the cylinder of the primary cyclone separator 301 is greater than or equal to the maximum diameter of the cylinder of the secondary cyclone separator 304. That is, the diameter of the first straight section of the primary cyclone separator 301 is greater than or equal to the diameter of the first straight section of the secondary cyclone separator 304. For example, the ratio of the diameter of the first straight section of the secondary cyclone separator 304 to the diameter of the first straight section of the primary cyclone separator 301 can be greater than or equal to 0.375 and less than or equal to 1. For instance, the ratio of the diameter of the first straight section of the secondary cyclone separator 304 to the diameter of the first straight section of the primary cyclone separator 301 can be 0.375, 0.5, 0.625, or 0.75. The specific ratio of the diameter of the first straight section of the secondary cyclone separator 304 to the diameter of the first straight section of the primary cyclone separator 301 can be set according to actual needs. For example, the diameter of the straight section of the first-stage cyclone separator 301 can be 30cm to 40cm; the wind speed of the first-stage cyclone separator 301 is 0.5m / s to 1.0m / s. The diameter of the straight section of the second-stage cyclone separator 304 can be 15cm to 30cm.

[0094] In other examples, other cyclone separators can be connected to the third outlet of the secondary cyclone separator 304 as needed, and the bottom of the other cyclone separators can be connected to the corresponding recovery tank.

[0095] In this embodiment, after the gas-solid mixture enters the primary cyclone separator 301 from the suction box 200, the individual particles are thrown to the periphery by the airflow rotation. Upon contact with the cylinder wall of the primary cyclone separator, they lose inertia and fall along the cylinder wall under the action of gravity, entering the second outlet at the bottom of the primary cyclone separator, and are discharged into the first recovery tank 302 for collection through the first discharge valve 303. The gas with the individual particles removed forms a vortex, flows out from the first outlet through the air guide pipe, and enters the secondary cyclone separator 304 for further separation. The individual particles after further separation in the secondary cyclone separator 304 are discharged into the second recovery tank 305 for collection through the fourth outlet at the bottom of the secondary cyclone separator 304, while the clean gas forms a vortex and enters the exhaust pipe 400 for final discharge. The individual particles discharged into the first recovery tank 302 and the second recovery tank 305 can be reused after post-processing methods such as melt thickening and thickening.

[0096] In this embodiment, by setting up multi-stage gas-solid separation, the separation effect of gas and individual particulate matter can be improved, more individual particulate matter can be recovered, and the final discharged gas can be ensured to be clean and pollution-free.

[0097] The recycling device provided in this embodiment has a good suction effect on suspended single particles, does not affect the change of the length of the windless zone, and is simple to clean and maintain. It can effectively recycle and utilize the suctioned single particles.

[0098] The recycling device provided in this embodiment uses a multi-stage cyclone separator and a negative pressure pump 510 to generate negative pressure. A funnel-shaped suction box 200 is used to enhance the negative pressure effect, and the individual particles are sucked up through the suction chamber substrate 100. A negative pressure sensor 520 is installed in the suction chamber substrate 100. The negative pressure sensor 520, the solenoid valve 550 in the suction box 200, and the negative pressure pump 510 are interlocked and controlled by a DCS controller. Different methods can be used to automatically control the negative pressure according to the actual situation on site. Simultaneously, the DCS controller communicates with the main unit, enabling real-time monitoring and adjustment of all spinning positions in the spinning workshop. The primary cyclone separator 301, the first recycling tank 302, the secondary cyclone separator 304, and the second recycling tank 305 effectively separate and collect individual particles. The collected individual particles can be reused after post-processing, and the final discharged gas is clean and pollution-free.

[0099] The recycling device provided in this embodiment can install the suction chamber base 100 between the spinning box 600 and the annular blowing device 700 after removing the aluminum plate or heat insulation pad 810. Due to its structural characteristics, the total thickness of the removed aluminum plate or heat insulation cotton can be the same as the thickness of the recycling device, ensuring that the height of the airless zone from the spinneret 601 to the annular blowing cooling device remains constant, thus ensuring product quality and production stability. Furthermore, the height of the suction chamber base 100, combined with the aluminum plate or heat insulation pad 810, can be flexibly adjusted. This allows it to maintain the airless zone of the machine product without change, or to adjust the airless zone according to production requirements, offering high flexibility.

[0100] The recycling device provided in this embodiment uses bolt-hole columns, which increases the structural rigidity of the suction device. The bolt-hole columns correspond to the bolt holes in the housing, aluminum plate, insulation cotton, and base plate 820, making disassembly and installation simple and providing good sealing. Furthermore, the flared suction box 200 is connected to the suction chamber base 100 via bolts and sealing gaskets, simplifying installation and disassembly.

[0101] In addition, the recycling device provided in this embodiment is simple to clean and maintain. It only requires blowing compressed air around and inside the suction chamber substrate 100 each time the annular blower 700 is lowered to clean the plate surface. The blown-off individual particles still enter the gas-solid separation component for separation and collection, making the entire recycling device clean. Under normal use, no other cleaning is required.

[0102] This embodiment also discloses a spinning process equipment, including: a spinning box 600, an annular blower 700 connected below the spinning box 600 and distributed vertically at intervals from the spinning box 600; at least one of a heat insulation pad 810, an aluminum plate, and a base plate 820, located between the spinning box 600 and the annular blower 700, for adjusting the distance between the spinning box 600 and the annular blower 700; and a recycling device for the spinning process as in any of the foregoing embodiments, the recycling device being located between the spinning box 600 and the annular blower 700.

[0103] The size of the windless zone between the bottom of the spinning box 600 and the top of the annular blowing device 700 can be adjusted by changing the number of heat insulation pads 810 and aluminum plates. For example, if the vertical dimension of the windless zone needs to be reduced, the number of heat insulation pads 810 or aluminum plates can be increased, or thicker heat insulation pads 810 or aluminum plates can be used; if the vertical dimension of the windless zone needs to be increased, the number of heat insulation pads 810 or aluminum plates can be reduced, or thinner heat insulation pads 810 or aluminum plates can be used.

[0104] Other components of the recycling device and spinning process equipment in the above embodiments can be adopted from various technical solutions that are now and will be known to those skilled in the art, and will not be described in detail here.

[0105] In the description of this specification, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0106] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, "multiple" means two or more, unless otherwise explicitly specified.

[0107] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0108] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0109] The foregoing disclosure provides many different implementations or examples for carrying out different structures of this disclosure. To simplify the disclosure, specific examples of components and arrangements have been described above. Of course, these are merely examples and are not intended to limit the scope of this disclosure. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0110] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this disclosure, and these should all be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A recycling device for a spinning process, characterized in that, include: A suction chamber base is used to be disposed between the spinning box and the annular blowing device; the suction chamber base is provided with a filament through hole for the filament to pass through; the internal space of the suction chamber base forms a negative pressure zone, the negative pressure zone is arranged around the circumference of the filament through hole, and the negative pressure zone is connected to the filament through hole. A suction box is connected to one side of the suction chamber base; the axis of the suction box is perpendicular to the axis of the filament through-hole. The internal space of the suction box is connected to the internal space of the suction cavity base; the suction box has an expansion section, and the cross-sectional area of ​​the expansion section gradually decreases along the direction away from the suction cavity base; A gas-solid separation component is connected to one end of the suction box away from the suction chamber substrate; the gas-solid separation component is used to separate gas from monomer particles and to recover the separated monomer particles. An exhaust pipe, connected to the gas-solid separation assembly, is used to discharge gas discharged from the gas-solid separation assembly; A negative pressure pump is used to provide negative pressure, allowing the monomer particles entering the filament through-holes to flow within the recycling device.

2. The recycling device for spinning process according to claim 1, characterized in that, The wall of the filament through hole is provided with multiple suction ports, so that the filament through hole is connected to the internal space of the suction cavity substrate through the suction ports; wherein at least two of the suction ports are distributed at intervals along the circumference of the filament through hole. And / or, the suction chamber base is provided with a plurality of second holes, and a first bolt is inserted into the first bolt hole of the second hole. The first bolt is used to connect the suction chamber base to at least one of the spinning box, the heat insulation pad, the aluminum plate, the base plate and the annular blowing device; wherein, at least one of the heat insulation pad, the aluminum plate and the base plate is provided between the spinning box and the annular blowing device.

3. The recycling device for spinning process according to claim 1, characterized in that, The suction box is detachably connected to the suction chamber base.

4. The recycling device for spinning process according to claim 3, characterized in that, The suction chamber substrate is provided with a first mounting base; the first mounting base is provided with second bolt holes, wherein at least two of the second bolt holes are distributed at intervals along the axial direction of the filament through hole; The suction box has a second mounting base, in which a second bolt passes and engages with a second bolt hole; wherein the axial direction of the second bolt is parallel to the axial direction of the suction box.

5. The recycling device for spinning process according to claim 1, characterized in that, Also includes: A negative pressure sensor is used to detect negative pressure. The negative pressure sensor is disposed in the suction chamber substrate and is located near the filament through-hole.

6. The recycling device for spinning process according to claim 5, characterized in that, The suction box includes a first connecting section, which connects the expansion section and the gas-solid separation component. The recycling device further includes: an electromagnetic valve and a first controller, wherein the electromagnetic valve is installed in the first connecting section, and the electromagnetic valve and the negative pressure sensor are electrically connected to the first controller respectively.

7. The recycling device for spinning process according to claim 5, characterized in that, Also includes: The second controller is electrically connected to the negative pressure sensor and the negative pressure pump, respectively. The negative pressure pump is connected between the exhaust pipe and the gas-solid separation component.

8. The recycling device for spinning process according to claim 1, characterized in that, The gas-solid separation component includes: A primary cyclone separator, connected to the suction box, is used to separate gas from individual particulate matter; the primary cyclone separator has a first outlet and a second outlet, the second outlet being located below the first outlet and at the bottom of the primary cyclone separator; The first recovery tank, connected to the second outlet via a first discharge valve, is used to recover the individual particulate matter discharged from the first-stage cyclone separator; A secondary cyclone separator is connected to the first outlet of the primary cyclone separator and is used to separate gas from individual particulate matter; the secondary cyclone separator has a third outlet and a fourth outlet, the fourth outlet being located below the third outlet and at the bottom of the secondary cyclone separator; The second recovery tank, connected to the fourth outlet via a second discharge valve, is used to recover the individual particulate matter discharged from the secondary cyclone separator.

9. The recycling device for spinning process according to claim 8, characterized in that, The maximum diameter of the cylinder of the first-stage cyclone separator is greater than or equal to the maximum diameter of the cylinder of the second-stage cyclone separator; And / or, the first-stage cyclone separator has a first straight section and a first conical section, the first straight section being located above the first conical section; the cross-sectional area of ​​the first conical section gradually decreases from top to bottom; the vertical length of the first straight section is less than the vertical length of the first conical section.

10. A spinning process equipment, characterized in that, include: Spinning box body, An annular blowing device is connected to the lower part of the spinning box and is distributed at intervals from the spinning box along the vertical direction; At least one of the heat insulation pad, aluminum plate, and base plate is located between the spinning box and the annular blower, for adjusting the distance between the spinning box and the annular blower; The recycling device for a spinning process as described in any one of claims 1 to 9, wherein the recycling device is located between the spinning box and the annular blowing device.

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