CN113802194B - Polypropylene-polyethylene composite fiber spinning equipment - Google Patents
Polypropylene-polyethylene composite fiber spinning equipment Download PDFInfo
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- CN113802194B CN113802194B CN202111093897.3A CN202111093897A CN113802194B CN 113802194 B CN113802194 B CN 113802194B CN 202111093897 A CN202111093897 A CN 202111093897A CN 113802194 B CN113802194 B CN 113802194B
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- air outlet
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/04—Dry spinning methods
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a polypropylene polyethylene composite fiber filamentation device, which comprises the following components: the constant-temperature and constant-humidity spinning and crystallizing equipment comprises an inert gas storage device, a crystallizing device and a surface cooler, wherein an air outlet of the inert gas storage device is connected with a refrigerating machine, an air outlet of the refrigerating machine is connected to the surface cooler, and the surface cooler is driven by an air conditioner; the crystallization device comprises a crystallization pipe, the upper part of the crystallization pipe is provided with a spinning nozzle communicated with the raw material liquid pipe, and one side of the crystallization pipe is provided with an air inlet pipe communicated with an air outlet of the surface air cooler; the other side of the crystallization pipe is communicated with a backflow air outlet pipe, and the tail end of the backflow air outlet pipe is connected with an inert gas storage device; one end of the surface cooler is communicated with the refrigerator through a pipeline, and the other end of the surface cooler is communicated with the crystallization pipe through a pipeline; the air pump and the reflux cooling device are arranged on the reflux air outlet pipe. The invention solves the problems that the prior art can not accurately maintain constant temperature and constant humidity, can not properly regulate temperature, has poor heat exchange efficiency and can not adapt to the production of different types of composite fibers.
Description
Technical Field
The invention relates to the field of rare earth electrolyte particle treatment equipment, in particular to polypropylene-polyethylene composite fiber filamentation equipment.
Background
At present, in the spinning production process of the existing composite short fiber, a plastic stock solution is firstly required to be crystallized into a filament by a spinning crystallization device, and in the filament forming process, in order to form polypropylene and polyethylene into isotactic composite high polymer fibers with regular and ordered arrangement height, the stable crystallization point of the filament needs to be controlled in the whole process.
The polypropylene fiber is lower in density than water, the problem that the surface of the formed fiber is not smooth and the formed fiber is easy to float and break due to water spray cooling is solved, the conventional air cooling mode is adopted, the air cooling mode needs to be carried out in a long and narrow air duct, the temperature in the air duct of the conventional spinning and crystallizing process cannot be accurately kept constant temperature and humidity, the temperature cannot be properly adjusted, and the spinning and crystallizing process cannot be suitable for producing different types of composite fibers.
Disclosure of Invention
Aiming at the problems, the invention provides polypropylene and polyethylene composite fiber spinning equipment, which solves the defects that the existing equipment cannot accurately maintain constant temperature and constant humidity, cannot properly regulate temperature, has poor heat exchange efficiency and cannot adapt to the production of different types of composite fibers.
The technical scheme adopted by the invention is as follows:
a polypropylene polyethylene composite fiber filamentation device comprises: the constant-temperature and constant-humidity spinning and crystallizing equipment comprises an inert gas storage device, a crystallizing device and a surface cooler, wherein an air outlet of the inert gas storage device is connected with a refrigerating machine, an air outlet of the refrigerating machine is connected to the surface cooler, and the surface cooler is driven by an air conditioner; the crystallization device comprises a crystallization pipe, the upper part of the crystallization pipe is provided with a spinning nozzle communicated with the raw material liquid pipe, and one side of the crystallization pipe is provided with an air inlet pipe communicated with an air outlet of the surface air cooler; the other side of the crystallization pipe is communicated with a backflow air outlet pipe, and the tail end of the backflow air outlet pipe is connected with an inert gas storage device; one end of the surface cooler is communicated with the refrigerating machine through a pipeline, and the other end of the surface cooler is communicated with the crystallization pipe through a pipeline; and the backflow air outlet pipe is provided with an air pump and a backflow cooling device. The surface cooler and the inert gas storage device are arranged, the inert gas stored in advance is used for cooling the polypropylene fiber, and the difficulty of controlling the temperature and the humidity of the gas entering the crystallization tube is reduced by using external air (the temperature and the humidity of the external air fluctuate greatly); preferably, the invention adopts helium as inert gas, the helium has small molecular weight and high heat exchange efficiency; the inert gas is adopted to help protect the polypropylene fiber and avoid high-temperature oxidation of the polypropylene fiber.
Optionally, the backflow cooling device comprises a heat exchange tank body and a cooling water tank body, a water outlet pipe is arranged at the upper part of the heat exchange tank body, a water inlet pipe is arranged at the lower part of the heat exchange tank body, and the water outlet pipe and the water inlet pipe are both communicated with the cooling water tank body; and the backflow air outlet pipe is also provided with a drying and purifying device. The invention cools the inert gas after heat exchange through cooling water.
Optionally, be located be equipped with the side siphunculus on the backward flow play tuber pipe of heat exchange tank body front end, be equipped with first pivot in the side siphunculus, movable blade is equipped with on the first pivot, and inert gas flows in the side siphunculus and rotates with drive movable blade, backward flow play tuber pipe is worn out to first pivot one end, and should wear out backward flow play tuber pipe first pivot end and be equipped with the first bevel gear of vertical arrangement, first bevel gear's below is equipped with the level and arranges and rather than intermeshing's second bevel gear, the second pivot is equipped with at the second bevel gear center, the second pivot stretches into downwards in the outlet pipe, the tip that the outlet pipe was stretched into in the second pivot is equipped with rotor blade, rotor blade rotates and is used for driving rivers upward flow. According to the invention, the air flow of the air pump enables the movable blade rotating shaft, the first rotating shaft and the first bevel gear arranged on the first rotating shaft to rotate, and then the second bevel gear is driven to rotate, so that the rotating blades rotate to drive the water flow to flow upwards.
Optionally, a cavity is arranged in the heat exchange tank body, and the inner diameter of the cavity is gradually reduced from the bottom to the top.
Optionally, a separating component is arranged in the cavity, the separating component divides the cavity into an inner cavity and an outer cavity, and the upper part and the lower part of the inner cavity are both communicated with the backflow air outlet pipe, so that the gas flowing back through the backflow air outlet pipe passes through the inner cavity; the lower part of the outer cavity is communicated with a water inlet pipe, and the upper part of the outer cavity is communicated with a water outlet pipe. The inner diameter of the cavity is gradually reduced from the bottom to the top, so that when water flows from the bottom to the top, the flow velocity of the water can be accelerated to flow upwards due to the Bernoulli effect.
Optionally, the dividing assembly includes a turning member at both ends and a first retractable dividing membrane communicating the turning member at both ends.
Optionally, the turnover part comprises a plurality of heat-conducting copper sheets hinged to the inner wall of the separation assembly at the bottom, a second telescopic separation film is connected between every two adjacent heat-conducting copper sheets, one end of the second separation film is connected with the first separation film, and the other end of the second separation film is fixed in the separation assembly.
Optionally, a first spring made of memory metal is hinged to the heat-conducting copper sheet, when the inert temperature exceeds the deformation temperature of the memory metal, the first spring is made to extend, and one end, away from the heat-conducting copper sheet, of the first spring is connected with the movable sheet; the first spring positioned at the upper part of the inner cavity is connected with the movable sheet in an inclined upward manner, and the first spring positioned at the lower part of the inner cavity is also connected with the movable sheet in an inclined upward manner.
Optionally, the movable plate is connected with a second spring, the second spring positioned at the top of the upper movable plate is connected with the top of the inner wall of the separation assembly, the second spring positioned at the bottom of the lower movable plate is connected with the bottom of the inner wall of the separation assembly, and the second spring is used for providing resilience force for enabling the movable plate to move downwards. The inert gas is heated by the crystallization tube and enters the heat exchange tank body, when the inert temperature exceeds the deformation temperature of the memory metal, the first spring can be stretched, the second spring enables the movable sheet not to move upwards, the heat-conducting copper sheet is enabled to turn outwards, the first separation film and the second separation film are driven to stretch, the inner cavity is enlarged, the area of the first separation film and the area of the second separation film are enlarged, the first separation film and the second separation film are enabled to be thinned, the heat exchange efficiency is improved, meanwhile, when the cooling efficiency of the crystallization tube needs to be increased, the air quantity of the backflow air outlet tube is increased, the movable plate moves along the air flow moving direction, the first spring and the heat-conducting copper sheet are pushed to turn outwards, the first separation film and the second separation film are further driven to stretch, and the inner cavity is enlarged; but the enhanced airflow will also cause outward expansion, enhancing heat exchange efficiency.
Optionally, an electromagnetic control valve is installed on the backflow air outlet pipe at the rear end of the air pump, the air pump and the electromagnetic control valve are electrically connected with the control unit, and the control unit is used for controlling the power of the air pump and the switching degree of the electromagnetic control valve, and further controlling the size of the air flow in the backflow air outlet pipe.
(III) advantageous effects
1. According to the invention, the surface cooler and the inert gas storage device are arranged, the inert gas stored in advance is used for cooling the polypropylene fiber, and the difficulty of controlling the temperature and humidity of the gas entering the crystallization tube is reduced by using external air (the temperature and humidity of the external air fluctuate greatly) instead of using the external air; preferably, the invention adopts helium as inert gas, the helium has small molecular weight and high heat exchange efficiency; inert gas is adopted to help protect the polypropylene fiber and avoid high-temperature oxidation of the polypropylene fiber.
2. According to the invention, the air flow of the air pump enables the movable blade rotating shaft, the first rotating shaft and the first bevel gear arranged on the first rotating shaft to rotate, and then the second bevel gear is driven to rotate, so that the rotating blades rotate to drive the water flow to flow upwards.
3. The inner diameter of the cavity is gradually reduced from the bottom to the top, so that when water flows from the bottom to the top, the flow velocity of the water can be accelerated to flow upwards due to the Bernoulli effect.
4. The inert gas is heated by the crystallization tube and enters the heat exchange tank body, when the inert temperature exceeds the deformation temperature of the memory metal, the first spring can be stretched, the second spring enables the movable sheet not to move upwards, the heat-conducting copper sheet is enabled to turn outwards, the first separation film and the second separation film are driven to stretch, the inner cavity is enlarged, the area of the first separation film and the area of the second separation film are enlarged, the first separation film and the second separation film are enabled to be thinned, the heat exchange efficiency is improved, meanwhile, when the cooling efficiency of the crystallization tube needs to be increased, the air quantity of the backflow air outlet tube is increased, the movable plate moves along the air flow moving direction, the first spring and the heat-conducting copper sheet are pushed to turn outwards, the first separation film and the second separation film are further driven to stretch, and the inner cavity is enlarged; but the enhanced airflow will also cause outward expansion, enhancing heat exchange efficiency.
Description of the drawings:
FIG. 1 is an external structural view of a polypropylene-polyethylene composite fiber spinning apparatus according to example 2 of the present invention;
FIG. 2 is a view of part A of the structure of the apparatus for forming polypropylene-polyethylene composite fibers according to example 2 of the present invention;
FIG. 3 is a view showing the internal structure of a cooling water tank of the polypropylene-polyethylene composite fiber spinning apparatus according to example 2 of the present invention;
FIG. 4 is a partially developed structural view of an inverter of the PP-PE composite fiber forming apparatus according to example 2 of the present invention;
fig. 5 is a control flowchart of the control unit of the polypropylene-polyethylene composite fiber filament-forming apparatus according to example 2 of the present invention.
The figures are numbered:
1. inert gas storage device, 2, crystallizing device, 3, refrigerating machine, 4, surface cooler, 5, crystallizing pipe, 6, air pump, 7, air inlet pipe, 8, backflow air outlet pipe, 9, backflow cooling device, 10, heat exchange tank body, 11, cooling water tank body, 12, water outlet pipe, 13, water inlet pipe, 14, side through pipe, 15, first rotating shaft, 16, movable blade, 17, first bevel gear, 18, second bevel gear, 19, second rotating shaft, 20, rotating blade, 21, cavity, 22, partition component, 23, inner cavity, 24, outer cavity, 25, turnover piece, 26, first partition membrane, 27, heat conduction copper sheet, 28, second partition membrane, 29, first spring, 30, movable sheet, 31, second spring, 32, electromagnetic control valve, 33, control unit, 34 and drying and purifying device.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
The technical scheme adopted by the invention is as follows:
a polypropylene polyethylene composite fiber filamentation device comprises: the constant-temperature and constant-humidity spinning and crystallizing equipment comprises an inert gas storage device 1 and a crystallizing device 2, wherein an air outlet of the inert gas storage device is connected with a refrigerating machine 3, an air outlet of the refrigerating machine is connected to a surface air cooler 4, and the surface air cooler is driven by an air conditioner; the crystallization device comprises a crystallization tube 5, the upper part of the crystallization tube is provided with a spinning nozzle communicated with a raw material liquid tube, and one side of the crystallization tube is provided with an air inlet tube 7 communicated with an air outlet of the surface air cooler; the other side of the crystallization pipe is communicated with a backflow air outlet pipe 8, and the tail end of the backflow air outlet pipe is connected with an inert gas storage device; one end of the surface cooler is communicated with the freezer through a pipeline, and the other end of the surface cooler is communicated with the crystallization pipe through a pipeline; and the air pump 6 and the reflux cooling device 9 are arranged on the reflux air outlet pipe.
In the implementation of the embodiment, the inert gas stored in advance is used for cooling the polypropylene fiber instead of using the outside air (the temperature and humidity of the outside air fluctuate greatly), so that the difficulty of controlling the temperature and humidity of the gas entering the crystallization tube is reduced; preferably, the invention adopts helium as inert gas, the helium has small molecular weight and high heat exchange efficiency; the inert gas is adopted to help protect the polypropylene fiber and avoid high-temperature oxidation of the polypropylene fiber.
Example 2
As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, a polypropylene-polyethylene composite fiber spinning apparatus includes: the constant-temperature and constant-humidity spinning and crystallizing equipment comprises an inert gas storage device, a crystallizing device and a surface cooler, wherein an air outlet of the inert gas storage device is connected with a refrigerating machine, an air outlet of the refrigerating machine is connected to the surface cooler, and the surface cooler is driven by an air conditioner; the crystallization device comprises a crystallization tube, the upper part of the crystallization tube is provided with a spinning nozzle communicated with the raw material liquid tube, and one side of the crystallization tube is provided with an air inlet tube communicated with an air outlet of the surface air cooler; the other side of the crystallization pipe is communicated with a backflow air outlet pipe, and the tail end of the backflow air outlet pipe is connected with an inert gas storage device; one end of the surface cooler is communicated with the freezer through a pipeline, and the other end of the surface cooler is communicated with the crystallization pipe through a pipeline; and the backflow air outlet pipe is provided with an air pump and a backflow cooling device.
The reflux cooling device comprises a heat exchange tank body 10 and a cooling water tank body 11, wherein a water outlet pipe 12 is arranged at the upper part of the heat exchange tank body, a water inlet pipe 13 is arranged at the lower part of the heat exchange tank body, and the water outlet pipe and the water inlet pipe are both communicated with the cooling water tank body; the heat exchange tank is characterized in that a side through pipe 14 is arranged on a backflow air outlet pipe at the front end of the heat exchange tank body, a first rotating shaft 15 is arranged in the side through pipe, movable blades 16 are arranged on the first rotating shaft, inert gas in the side through pipe flows to drive the movable blades to rotate, one end of the first rotating shaft penetrates out of the backflow air outlet pipe, a vertically arranged first bevel gear 17 is arranged at the tail end of the first rotating shaft penetrating out of the backflow air outlet pipe, a second bevel gear 18 which is horizontally arranged and meshed with the first bevel gear is arranged below the first bevel gear, a second rotating shaft 19 is arranged in the center of the second bevel gear, the second rotating shaft extends downwards into the water outlet pipe, rotating blades 20 are arranged at the end part, extending into the water outlet pipe, of the second rotating shaft, and the rotating blades are used for driving water to flow upwards. The first rotating shaft and the second rotating shaft cylinder sealing bearings are respectively arranged on the backflow air outlet pipe and the water outlet pipe. And a drying and purifying device 34 is arranged on the backflow air outlet pipe.
A cavity 21 is arranged in the heat exchange tank body, and the inner diameter of the cavity is gradually reduced from the bottom to the top. A separation component 22 is arranged in the cavity, the separation component divides the cavity into an inner cavity 23 and an outer cavity 24, and the upper part and the lower part of the inner cavity are both communicated with a backflow air outlet pipe, so that the gas of the backflow air outlet pipe passes through the inner cavity; the lower part of the outer cavity is communicated with a water inlet pipe, and the upper part of the outer cavity is communicated with a water outlet pipe.
The sectioning assembly includes a flipper 25 at both ends and a first telescoping membrane 26 communicating the flippers at both ends. The turnover piece comprises a plurality of heat-conducting copper sheets 27 hinged to the inner wall of the separation component at the bottom, a second telescopic separation film 28 is connected between every two adjacent heat-conducting copper sheets, one end of the second separation film is connected with the first separation film, and the other end of the second separation film is fixed in the separation component.
A first spring 29 made of memory metal is hinged to the heat-conducting copper sheet, and one end, far away from the heat-conducting copper sheet, of the first spring is connected with a movable sheet 30; the first spring positioned at the upper part of the inner cavity is connected with the movable sheet in an inclined upward manner, and the first spring positioned at the lower part of the inner cavity is also connected with the movable sheet in an inclined upward manner. The movable sheet is connected with a second spring 31, the second spring at the top of the upper movable sheet is connected with the top of the inner wall of the separation component, the second spring at the bottom of the lower movable sheet is connected with the bottom of the inner wall of the separation component, and the second spring is used for providing resilience force for enabling the movable sheet to move downwards.
And an electromagnetic control valve 32 is arranged on the backflow air outlet pipe at the rear end of the air pump, the air pump and the electromagnetic control valve are electrically connected with a control unit 33, and the control unit is used for controlling the power of the air pump and the switching degree of the electromagnetic control valve so as to control the size of air flow in the backflow air outlet pipe.
When the air pump is used, the air flow flows through the air pump, so that the rotating shaft of the movable blade, the first rotating shaft and the first bevel gear installed on the first rotating shaft rotate, and then the second bevel gear is driven to rotate, and the rotating blade is driven to rotate to drive the water flow to flow upwards. The inner diameter of the cavity is gradually reduced from the bottom to the top, so that when water flows from the bottom to the top, the flow speed of the water flow is accelerated to flow upwards due to the Bernoulli effect.
Inert gas enters the heat exchange tank body after being heated by the crystallization tube, when the inert temperature exceeds the deformation temperature of the memory metal, the first spring can be stretched, the second spring enables the movable sheet not to move upwards, the heat conduction copper sheet is enabled to turn outwards, the first separation film and the second separation film are driven to stretch, the inner cavity is enlarged, the area of the first separation film and the area of the second separation film are enlarged, the first separation film and the second separation film are thinned, the heat exchange efficiency is improved, meanwhile, when the cooling efficiency of the crystallization tube needs to be increased, the air quantity of the backflow air outlet tube is increased, the movable plate is enabled to move along the air flow moving direction, the first spring and the heat conduction copper sheet are further pushed to turn outwards, the first separation film and the second separation film are further driven to stretch, and the inner cavity is enlarged; but the enhanced airflow will also cause outward expansion, enhancing heat exchange efficiency.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.
Claims (3)
1. A polypropylene polyethylene composite fiber filamentation equipment is characterized by comprising the following components: the constant-temperature and constant-humidity spinning and crystallizing equipment comprises an inert gas storage device, a crystallizing device and a surface cooler, wherein an air outlet of the inert gas storage device is connected with a refrigerating machine, an air outlet of the refrigerating machine is connected to the surface cooler, and the surface cooler is driven by an air conditioner; the crystallization device comprises a crystallization tube, the upper part of the crystallization tube is provided with a spinning nozzle communicated with the raw material liquid tube, and one side of the crystallization tube is provided with an air inlet tube communicated with an air outlet of the surface air cooler; the other side of the crystallization pipe is communicated with a backflow air outlet pipe, and the tail end of the backflow air outlet pipe is connected with an inert gas storage device; one end of the surface cooler is communicated with the refrigerating machine through a pipeline, and the other end of the surface cooler is communicated with the crystallization pipe through a pipeline; the backflow air outlet pipe is provided with an air pump and a backflow cooling device;
the backflow cooling device comprises a heat exchange tank body and a cooling water tank body, wherein a water outlet pipe is arranged at the upper part of the heat exchange tank body, a water inlet pipe is arranged at the lower part of the heat exchange tank body, and the water outlet pipe and the water inlet pipe are both communicated with the cooling water tank body; the backflow air outlet pipe is also provided with a drying and purifying device; a side through pipe is arranged on a backflow air outlet pipe positioned at the front end of the heat exchange tank body, a first rotating shaft is arranged in the side through pipe, movable blades are arranged on the first rotating shaft, inert gas in the side through pipe flows to drive the movable blades to rotate, one end of the first rotating shaft penetrates out of the backflow air outlet pipe, a first bevel gear which is vertically arranged is arranged at the tail end of the first rotating shaft which penetrates out of the backflow air outlet pipe, a second bevel gear which is horizontally arranged and mutually meshed with the first bevel gear is arranged below the first bevel gear, a second rotating shaft is arranged in the center of the second bevel gear, the second rotating shaft extends downwards into a water outlet pipe, a rotating blade is arranged at the end part of the second rotating shaft which extends into the water outlet pipe, and the rotating blade rotates to drive water flow upwards;
a cavity is arranged in the heat exchange tank body, and the inner diameter of the cavity is gradually reduced from the bottom to the top; a separation assembly is arranged in the cavity and divides the cavity into an inner cavity and an outer cavity, and the upper part and the lower part of the inner cavity are both communicated with a backflow air outlet pipe, so that the gas of the backflow air outlet pipe passes through the inner cavity; the lower part of the outer cavity is communicated with a water inlet pipe, and the upper part of the outer cavity is communicated with a water outlet pipe; the separation assembly comprises turnover pieces positioned at two ends and a telescopic first separation membrane communicated with the turnover pieces at the two ends; the turnover piece comprises a plurality of heat conduction copper sheets hinged to the inner wall of the separation assembly at the bottom, a telescopic second separation film is connected between every two adjacent heat conduction copper sheets, one end of the second separation film is connected with the first separation film, and the other end of the second separation film is fixed in the separation assembly; a first spring made of memory metal is hinged to the heat-conducting copper sheet, and one end, far away from the heat-conducting copper sheet, of the first spring is connected with the movable sheet; the first spring positioned at the upper part of the inner cavity is obliquely upwards connected with the movable sheet, and the first spring positioned at the lower part of the inner cavity is also obliquely upwards connected with the movable sheet.
2. The apparatus of claim 1, wherein the movable plate is connected with a second spring, the second spring located at the top of the upper movable plate is connected with the top of the inner wall of the partition member, and the second spring located at the bottom of the lower movable plate is connected with the bottom of the inner wall of the partition member, the second spring providing a resilient force for moving the movable plate downward.
3. The apparatus according to claim 2, wherein an electromagnetic control valve is installed on the return air outlet pipe at the rear end of the air pump, the air pump and the electromagnetic control valve are electrically connected to a control unit, and the control unit is configured to control the power of the air pump and the degree of opening and closing of the electromagnetic control valve, so as to control the size of the air flow in the return air outlet pipe.
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| CN202111093897.3A CN113802194B (en) | 2021-09-17 | 2021-09-17 | Polypropylene-polyethylene composite fiber spinning equipment |
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| CN202111093897.3A CN113802194B (en) | 2021-09-17 | 2021-09-17 | Polypropylene-polyethylene composite fiber spinning equipment |
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| US2508462A (en) * | 1945-03-17 | 1950-05-23 | Union Carbide & Carbon Corp | Method and apparatus for the manufacture of synthetic staple fibers |
| GB705661A (en) * | 1950-07-11 | 1954-03-17 | Johan Ernst Nyrop | A process and plant for converting molten materials into a granular or powdery crystalline product |
| DE69935535T2 (en) * | 1999-02-04 | 2007-07-05 | Bühler AG | PROCESS FOR IMPROVING STATE OF RECYCLING OF SPECIFIC PLASTIC MATERIAL |
| ES2539610T3 (en) * | 2012-09-26 | 2015-07-02 | Polymetrix Ag | Procedure and device for direct crystallization of polymers under inert gas |
| CN204154053U (en) * | 2014-08-22 | 2015-02-11 | 诸暨绍弹化纤有限公司 | The spinning extruder constant temperature system of heat circulation application |
| CN204151489U (en) * | 2014-08-22 | 2015-02-11 | 诸暨绍弹化纤有限公司 | Cross air blow of spinning machine lingering remnants of past customs retracting device |
| CN104805513B (en) * | 2015-04-24 | 2017-02-01 | 光山县群力化纤有限公司 | Production method of polyamide-6 fiber |
| CN205741317U (en) * | 2016-06-15 | 2016-11-30 | 长兴江雅非织造布有限公司 | A kind of cooling back installation of spinning-drawing machine |
| CN107830593B (en) * | 2017-12-06 | 2023-10-20 | 宁波大发新材料有限公司 | Chemical fiber spinning return air conditioning device |
| CN112401267A (en) * | 2020-12-10 | 2021-02-26 | 河南省大新商贸有限公司 | Fruit vinegar production rinsing machine with water temperature capable of being automatically adjusted |
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