Single-air-duct low-energy-consumption compact spinning system

Abstract

The invention provides a single-air-duct low-energy-consumption compact spinning system which comprises a negative pressure air bellow of a three-layer structure and a pneumatic self-cleaning rotary dust cage, compact spinning negative pressure and process cotton suction negative pressure share an air duct, and the compact spinning negative pressure and the process cotton suction negative pressure are distributed through a variable-diameter throttling pipe. The upper layer of the negative-pressure air bellow is a negative-pressure bin, the middle layer is a cotton stripping bin, the lower layer is a noil bin, and the negative-pressure bin and the cotton stripping bin are locally isolated by a first partition plate, a second partition plate and a rotary dust cage. A group of impellers are arranged in the rotary dust cage, negative pressure airflow acts on the impellers to drive the rotary dust cage to rotate, an air suction opening of the fan and the air duct form an airflow channel, the cotton stripping bin and the noil bin are free of airflow inlets and form a constant-pressure bin, and fibers on the surface of the rotary dust cage enter the cotton stripping bin, are stripped off by the cotton stripping scraper blade and are transferred into the noil bin. The cotton stripping bin and the noil bin are separated through the fixed partition plate and the movable partition plate, and when the noil bin is opened to take out waste cotton, the negative pressure of the negative pressure bin is not affected.

Description

Technical Field

[0001] The invention belongs to the new technical field of spinning and relates to a single-duct low-energy consumption concentrated spinning system. Background Art

[0002] The compact spinning technology has a significant effect on improving the quality of yarn products, but the energy consumption of the airflow negative pressure compact spinning device is relatively high. Reducing the energy consumption of the airflow negative pressure compact spinning device is of great significance to reducing the cost of textile enterprises. At present, there are 120 million cotton spindles in my country, and the compact spinning production capacity is about 40 million spindles, which still has a lot of room for improvement. In the commonly used negative pressure airflow compact spinning, the negative pressure energy consumption of each spindle of yarn spinning is about 8 to 10 watts, and the energy consumption of 10,000 spindles installed capacity is as high as more than 110 kilowatts.

[0003] The negative pressure airflow of the compact spinning frame is provided by the fan of the spinning frame bellows. The traditional compact spinning frame bellows include two bellows with different functions, one is a cotton suction bellows that provides negative pressure airflow for the flute tube to suck away the fibers generated by the yarn breakage; the other is a compact spinning negative pressure bellows that provides a compact airflow for the fiber bundle in the compact spinning device. In order to ensure the spinning quality, the compact spinning negative pressure bellows have high requirements for the airflow fluctuation range, and the negative pressure airflow cannot fluctuate over a large range to affect the yarn quality. The cotton suction bellows of the spinning machine is responsible for sucking away all the fibers output by the front rollers at the yarn break position and collecting them. The fibers sucked into the cotton suction bellows will be adsorbed on the filter net, reducing the negative pressure of the cotton suction. Only after the fibers on the filter net are cleaned can the negative pressure of the cotton suction return to the initial state. The fibers adsorbed on the filter net of the cotton suction bellows of the traditional spinning machine are usually removed and taken out manually. The spinning machine needs to repeatedly clean the fibers in the cotton suction bellows during the production process to ensure the negative pressure size of the flute tube mouth. At the same time, the fibers recovered in the cotton suction bellows can also be recycled. The negative pressure fluctuation of the cotton suction bellows is far greater than that of the concentrated spinning negative pressure bellows, so it is impossible to simply simplify the concentrated spinning negative pressure bellows and the cotton suction bellows into one bellows.

[0004] Announcement No. CN 220202129 U discloses an energy-saving bellows for a spinning machine, wherein a scraping brush suction mechanism is installed on the outside of the negative pressure filter. The negative pressure filter is scraped and brushed by the bristles on the scraping brush suction box of the scraping brush suction mechanism, and the short-pile impurities after scraping and brushing are sucked and cleaned by the suction port on the scraping brush suction box, thereby avoiding the short-pile impurities being re-adsorbed on the negative pressure filter after the scraping and brushing operation, which affects the normal operation of the negative pressure filter. The short-pile impurities after suction enter the filter bag through the suction pipe and the air guide pipe, which effectively improves the working efficiency of the negative pressure filter. In the actual operation of the bellows of the spinning machine, the negative pressure airflow of the fan is very high, and the fibers are tightly adsorbed on the filter under the action of the airflow pressure. It is difficult to clean the fibers on the surface of the filter by using a scraping brush with a suction device, and a larger suction negative pressure is required, which significantly increases the energy consumption of the equipment.

[0005] Announcement No. CN 220202129 U discloses an energy-saving bellows for a spinning machine, wherein a scraping brush suction mechanism is installed on the outside of the negative pressure filter. The negative pressure filter is scraped and brushed by the bristles on the scraping brush suction box of the scraping brush suction mechanism, and the short-pile impurities after scraping and brushing are sucked and cleaned by the suction port on the scraping brush suction box, thereby avoiding the short-pile impurities being re-adsorbed on the negative pressure filter after the scraping and brushing operation, which affects the normal operation of the negative pressure filter. The short-pile impurities after suction enter the filter bag through the suction pipe and the air guide pipe, which effectively improves the working efficiency of the negative pressure filter. In the actual operation of the bellows of the spinning machine, the negative pressure airflow of the fan is very high, and the fibers are tightly adsorbed on the filter under the action of the airflow pressure. It is difficult to clean the fibers on the surface of the filter by using a scraping brush with a suction device, and a larger suction negative pressure is required, which significantly increases the energy consumption of the equipment.

[0006] An automatic cleaning type spinning machine cotton suction bellows with announcement number CN110747546B divides the cotton suction bellows into two interconnected cabins. The negative pressure chamber is provided with upper and lower cotton box airflow blocking plates which divide the negative pressure chamber into an upper cotton suction box and a lower cotton drop box. The compact spinning negative pressure air duct and the process exhaust duct are connected to the upper cotton suction box. The filter screen structure adopts the rotary dust cage structure commonly used in the cotton condenser of textile equipment. Two free-state airflow blocking rollers are arranged inside the dust cage. The airflow blocking rollers are used to set a low negative pressure zone in a local area of ​​the filter screen, so that the fibers on the filter screen fall off to the lower cotton drop box, which has an energy-saving effect. However, this method fails to fully consider the detailed characteristics of the working of the bellows of the spinning machine. The two free-state airflow blocking rollers are subject to the action of friction during the rotation of the dust cage. The blocking rollers will move along the circumference of the dust cage and move toward the lowest point of the dust cage under the action of their own gravity. Due to the change in the position of the two blocking rollers in the dust cage, the two rollers will swing back and forth under the action of friction and gravity. In addition, during the movement of the two blocking rollers, the contact points move in opposite directions, and the two rollers rub against each other. The two blocking rollers will have a force difference and uneven movement, and a stable airflow blocking effect cannot be achieved. Especially when the fibers accumulated in the cotton drop bin need to be cleaned, when the bin door is opened, the negative pressure bellows will form a pressure difference with the outside atmosphere through the bin door. Under the action of the huge airflow pressure, the blocking rollers will be lifted up by the high-pressure airflow and cannot play a blocking role. At this time, the negative pressure of the concentrated spinning is sharply reduced, which seriously affects the yarn quality. At the same time, the fibers in the cotton drop bin will be adsorbed onto the surface of the dust cage again and cannot be completely cleaned out of the cotton drop bin.

[0007] The focus of the present invention is to propose a single-duct low-energy consumption concentrated spinning system. The bellows of the system is a three-layer structure, and adopts a rotating dust cage with an impeller, which can rotate under the action of negative pressure airflow, thereby realizing self-cleaning of the dust cage, and cooperating with a new negative pressure airflow branch pipe structure of the concentrated spinning device. On the basis of the above, the concentrated spinning air duct and the process air duct are combined into one, thereby achieving the purpose of reducing energy consumption. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a single-duct low-energy concentrating spinning system. The concentrating spinning roving frame wind box is designed as a self-cleaning dust cage and a three-layer structure wind box to keep the negative pressure of the wind box stable, and the concentrating spinning negative pressure wind duct and the process cotton suction wind duct are combined into one to reduce the spinning energy consumption. At the same time, when the cotton waste bin is manually cleaned and returned, the pressure of the negative pressure air flow wind duct is not affected.

[0009] The technical solution of the present invention is as follows:

[0010] The present invention discloses a single-duct low-energy-consumption concentrating spinning system, which includes a three-layer negative pressure bellows, a pneumatic self-cleaning rotary dust cage, a common air duct for the concentrating spinning negative pressure and the process cotton suction negative pressure, and distributes the concentrating spinning negative pressure and the process cotton suction negative pressure through a variable-diameter throttling tube. The negative pressure bellows includes a negative pressure bin on the upper layer, a cotton stripping bin on the middle layer, and a cotton drop bin on the lower layer. The main body of the pneumatic self-cleaning rotary dust cage is located in the negative pressure bin, and the arc surface of the rotating surface with a certain arc length is the boundary between the negative pressure bin and the cotton stripping bin. The arc surface and the first partition plate and the second partition plate constitute the dividing surface between the negative pressure bin and the cotton stripping bin. As the dust cage rotates, the fibers adsorbed on the surface of the dust cage enter the cotton stripping bin from the negative pressure bin, are stripped off by the cotton stripping scraper in the cotton stripping bin, and fall into the cotton drop bin, thereby realizing the cleaning process of the pneumatic self-cleaning rotary dust cage. The edge of the fixed partition plate between the cotton stripping bin and the cotton drop bin is sealed, and the movable partition plate is installed using a sealed track.

[0011] Its further technical solution is that the stripping bin and the noil bin are connected when the concentrated spinning system is in working state, and the movable partition is in the open state, that is, the movable partition is located below the fixed partition. At this time, there is no airflow supplement inlet between the stripping bin and the noil bin, and a constant pressure bin will be formed. At this time, the static pressure is affected by the air pressure of the negative pressure bin. This principle allows the fiber layer adsorbed on the surface of the pneumatic self-cleaning rotary dust cage to enter the stripping bin from the negative pressure bin. The fibers are no longer affected by the airflow and are easily scraped off by the stripping scraper. When the fiber waste accumulated in the noil bin reaches a certain amount, it needs to be cleaned manually.

[0012] Its further technical solution is that the pneumatic self-cleaning rotary dust cage includes a central axis, a side plate, multiple groups of impellers, a supporting mesh plate, a stainless steel metal filter and an edge sealing strip. The pneumatic self-cleaning rotary dust cage is fixed by the central axis and three groups of rollers. When working, the airflow enters the inside of the pneumatic self-cleaning rotary dust cage from the negative pressure bin through the stainless steel metal filter and the supporting mesh plate under the action of the negative pressure fan, and acts on the multiple groups of impellers on the pneumatic self-cleaning rotary dust cage, and then the impeller drives the pneumatic self-cleaning rotary dust cage to rotate. The rotation direction of the dust cage can be changed by changing the axial angle between the impeller and the pneumatic self-cleaning rotary dust cage.

[0013] Its further technical solution is that the air duct structure shared by the negative pressure of the concentrated spinning and the negative pressure of the process cotton suction is composed of two parts, namely an inclined air duct and a horizontal air duct. The upper end of the inclined air duct is connected to the negative pressure bin of the bellows, and the lower end is connected to the horizontal air duct. This structure solves the problem of large resistance of the right-angle bend of the air duct. The horizontal air duct provides negative pressure airflow for the concentrated spinning special-shaped tube and the cotton suction flute tube. The horizontal air duct is installed on the wall panel of the spinning frame, located between the two sides of the car surface, and the base of the vertical rod of the coarse yarn frame straddles above the horizontal air duct. The first roller seat and the second roller seat are installed on the car surface. Three adjacent holes are opened on the side of the horizontal air duct between the first roller seat and the second roller seat, and the holes on both sides provide negative pressure for the concentrated spinning special-shaped tube. The horizontal air duct is connected to the air pipe through the first joint and the second joint of the concentrated spinning, and then connected to the concentrated spinning special-shaped tube. The middle hole is connected to the air pipe through the flute tube joint and the variable diameter throttling tube, and then connected to the cotton suction flute tube.

[0014] A further technical solution is that the cross-sectional structure of the variable diameter throttling tube is cylindrical, symmetrical along the axial middle section, the middle section is a circular hole of equal diameter, and both ends are conical open structures.

[0015] The beneficial technical effects of the present invention are as follows

[0016] The single-duct low-energy-consumption concentrated spinning system of the present invention can realize the self-cleaning function of the bellows dust cage, combine the concentrated spinning negative pressure duct and the process cotton suction duct into one, and ensure the stability of the negative pressure, which helps to reduce energy consumption, simplify the structure of the concentrated spinning aggregation unit, and maintain the spinning quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 Schematic diagram of the structure of a single-duct low-energy-consumption concentrated spinning system.

[0018] Attached Figure 2 Schematic diagram of the front view of the self-cleaning bellows when the cotton bin is open.

[0019] Attached Figure 3 Schematic diagram of the front view of the self-cleaning bellows when the cotton waste bin is closed.

[0020] Attached Figure 4 Schematic diagram of a four-roller down-suction condensing spinning device.

[0021] Attached Figure 5 Schematic diagram of the special-shaped tube and flute tube.

[0022] Attached Figure 6 Impeller type rotating dust cage.

[0023] Attached Figure 7 Variable diameter throttling tube.

[0024] Attached Figure 8 Schematic diagram of the four-roller upper suction spinning device of Example 2. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] Embodiment 1

[0027] A single-duct low-energy-consumption concentrated spinning system according to this embodiment is as follows: Figures 1 to 7 As shown, it includes a three-layer structure of negative pressure bellows, a pneumatic self-cleaning rotary dust cage 4, a common air duct for the negative pressure of concentrated spinning and the negative pressure of process cotton suction, and the negative pressure of concentrated spinning and the negative pressure of process cotton suction are distributed through a variable diameter throttling tube 21. The negative pressure bellows includes a negative pressure bin 1 on the upper layer, a cotton stripping bin 2 on the middle layer, and a cotton drop bin 3 on the lower layer. The main body of the pneumatic self-cleaning rotary dust cage 4 is located in the negative pressure bin 1, and the rotating surface has a certain arc length as the boundary between the negative pressure bin 1 and the cotton stripping bin 2. This arc surface and the first partition 25 and the second partition 26 constitute the dividing surface between the negative pressure bin 1 and the cotton stripping bin 2. As the dust cage rotates, the fibers adsorbed on the surface of the dust cage enter the cotton stripping bin 2 from the negative pressure bin 1, are stripped off by the cotton stripping scraper 6 in the cotton stripping bin 2, and fall into the cotton drop bin 3, realizing the cleaning process of the pneumatic self-cleaning rotary dust cage 4. The edge of the fixed partition 701 between the cotton stripping bin 2 and the cotton drop bin 3 is sealed, and the movable partition 702 is installed using a sealed track.

[0028] The stripping bin 2 and the noil bin 3 are connected when the concentrated spinning system is in working state. At this time, the movable partition 702 is in the open state, that is, the movable partition 702 is located below the fixed partition 701. At this time, there is no airflow supplement inlet between the stripping bin 2 and the noil bin 3, and a constant pressure bin will be formed. At this time, the static pressure is affected by the air pressure of the negative pressure bin 1. This principle allows the fiber layer adsorbed on the surface of the pneumatic self-cleaning rotary dust cage 4 to enter the stripping bin 2 from the negative pressure bin 1. The fibers are no longer affected by the airflow and are easily scraped off by the stripping scraper 6. When the fiber waste accumulated in the noil bin 3 reaches a certain amount, it needs to be manually cleaned. The specific process is: first put the handle 703 in a horizontal state, push the handle 703 to push out the movable partition 702, so as to separate the cotton stripping bin 2 from the cotton dropping bin 3, open the bin door 301 of the cotton dropping bin 3, take out the fiber in the cotton dropping bin, and close the bin door 301 of the cotton dropping bin 3, then pull out the handle 703 to open the movable partition 702, and return the handle 703 to its original position.

[0029] The pneumatic self-cleaning rotary dust cage 4 comprises a central shaft 8, a side plate 403, multiple impellers 401, a supporting mesh plate 404, a stainless steel metal filter 405 and an edge sealing strip 406. The pneumatic self-cleaning rotary dust cage 4 is fixed by the central shaft 8 and three sets of rollers 402. When working, the airflow enters the inside of the pneumatic self-cleaning rotary dust cage 4 from the negative pressure bin 1 through the stainless steel metal filter 405 and the supporting mesh plate 404 under the action of the negative pressure fan 5, and acts on the multiple impellers 401 on the pneumatic self-cleaning rotary dust cage 4, and then the multiple impellers 401 drive the pneumatic self-cleaning rotary dust cage 4 to rotate. The rotation direction of the dust cage can be changed by changing the axial angle between the multiple impellers 401 and the pneumatic self-cleaning rotary dust cage 4.

[0030] The air duct structure shared by the negative pressure of the concentrated spinning and the negative pressure of the process cotton suction is composed of two parts, namely the inclined air duct 9 and the horizontal air duct 10. The horizontal length range of the inclined air duct 9 is 165mm to 350mm. The upper end of the inclined air duct 9 is connected to the negative pressure bin 1 of the bellows, and the lower end is connected to the horizontal air duct 10. This structure solves the problem of large resistance of the right-angle bend of the air duct. The height range of the horizontal air duct 10 is 185mm to 255mm. The horizontal air duct 10 provides negative pressure airflow for the concentrated spinning special-shaped tube 12 and the cotton suction flute tube 14. The horizontal air duct 10 is installed on the wall panel 19 of the spinning frame, located between the two side car surfaces 18, and the coarse yarn frame vertical rod base 17 straddles the horizontal air duct 10. The first roller seat 15 and the second roller seat 16 are installed on the car surface 18. Three adjacent holes are opened on the side of the horizontal air duct 10 between the first roller seat 15 and the second roller seat 16, and the holes on both sides provide negative pressure for the agglomeration spinning profiled tube 12. The agglomeration spinning profiled tube 12 adopts a lower suction structure, that is, the negative pressure pipe interface of the agglomeration spinning profiled tube 12 is located below the agglomeration spinning profiled tube 12. At this time, the negative pressure pipe connecting the agglomeration spinning profiled tube 12 and the cotton suction flute tube 14 are both located below the agglomeration spinning roller 13 and the drafting roller 11. The horizontal air duct 10 is connected to the air pipe through the agglomeration spinning first joint 22 and the agglomeration spinning second joint 23, and then connected to the agglomeration spinning profiled tube 12. The middle hole is connected to the air pipe through the flute pipe joint 20 and the variable diameter throttling pipe 21, and then connected to the cotton suction flute tube 14.

[0031] The cross-sectional structure of the variable diameter throttling tube 21 is cylindrical, with a length of 60mm and a diameter of 3mm. The middle section is symmetrical along the axial direction, and the middle section is a circular hole of equal diameter, with a length of 12mm and a diameter of 6mm. Both ends are conical open structures, and the maximum end face aperture is 22mm.

[0032] Embodiment 2

[0033] In this embodiment, the interface position between the concentrated spinning special-shaped tube 12 and the trachea is adjusted to facilitate the application of drafting devices with different structures.

[0034] A single-duct low-energy-consumption concentrated spinning system according to this embodiment is as follows: Figure 8 As shown, the negative pressure pipe interface of the concentrated spinning special-shaped tube 12 is set on the upper surface of the concentrated spinning special-shaped tube 12, and the interface on the horizontal air duct 10 for providing negative pressure to the concentrated spinning special-shaped tube 12 is set on the upper surface of the horizontal air duct 10.

Claims

1. Single duct low energy consumption accumulation spinning system, Features: It includes a three-layer structure of a negative pressure bellows, a pneumatic self-cleaning rotary dust cage, a common air duct for the negative pressure of concentrated spinning and the negative pressure of process cotton suction, and distributes the negative pressure of concentrated spinning and the negative pressure of process cotton suction through a variable diameter throttling pipe; the negative pressure bellows includes a negative pressure bin on the upper layer, a cotton stripping bin on the middle layer, and a cotton dropping bin on the lower layer; the main body of the pneumatic self-cleaning rotary dust cage is located in the negative pressure bin, and the rotating surface has an arc surface with a certain arc length as the boundary between the negative pressure bin and the cotton stripping bin, and the arc surface and the first partition plate and the second partition plate constitute the dividing surface between the negative pressure bin and the cotton stripping bin; As the dust cage rotates, the fibers adsorbed on the surface of the dust cage enter the cotton stripping bin from the negative pressure bin, are stripped off by the cotton stripping scraper in the cotton stripping bin, and fall into the cotton dropping bin, realizing the cleaning process of the pneumatic self-cleaning rotary dust cage; the edge of the fixed partition between the cotton stripping bin and the cotton dropping bin is sealed, and the movable partition is installed with a sealed track.

2. The single-duct low-energy consumption accumulation spinning system according to claim 1, Features: The cotton stripping bin and the cotton dropping bin are connected when the concentrated spinning system is in working state. At this time, the movable partition is in the open state, that is, the movable partition is located below the fixed partition. At this time, there is no air flow supplement inlet between the cotton stripping bin and the cotton dropping bin, and a constant pressure bin will be formed. At this time, the static pressure is affected by the air pressure in the negative pressure bin. This principle allows the fiber layer adsorbed on the surface of the pneumatic self-cleaning rotary dust cage to enter the cotton stripping bin from the negative pressure bin. The fibers are no longer affected by the air flow and are easily scraped off by the cotton stripping scraper. When the fiber waste accumulated in the cotton dropping bin reaches a certain amount, manual cleaning is required.

3. The single-duct low-energy consumption accumulation spinning system according to claim 1, Features: The pneumatic self-cleaning rotary dust cage comprises a central axis, a side plate, multiple groups of impellers, a supporting mesh plate, a stainless steel metal filter and an edge sealing strip; the pneumatic self-cleaning rotary dust cage is fixed by the central axis and three groups of rollers. When working, the airflow enters the interior of the pneumatic self-cleaning rotary dust cage from the negative pressure bin through the stainless steel metal filter and the supporting mesh plate under the action of the negative pressure fan, and acts on the multiple groups of impellers on the pneumatic self-cleaning rotary dust cage, and then the pneumatic self-cleaning rotary dust cage is driven to rotate by the multiple groups of impellers; the axial angle between the multiple groups of impellers and the pneumatic self-cleaning rotary dust cage can be changed to change the rotation direction of the dust cage.

4. The single-duct low-energy consumption accumulation spinning system according to claim 1, Features: The shared air duct structure of the concentrated spinning negative pressure and process cotton suction negative pressure is composed of two parts, namely an inclined air duct and a horizontal air duct. The upper end of the inclined air duct is connected to the negative pressure bin of the bellows, and the lower end is connected to the horizontal air duct. This structure solves the problem of large resistance of the right-angle bend in the air duct; the horizontal air duct provides negative pressure airflow for the concentrated spinning special-shaped tube and the cotton suction flute tube. The horizontal air duct is installed on the wall panel of the spinning frame and is located between the two sides of the car surface. The base of the coarse yarn frame vertical rod straddles above the horizontal air duct; the first roller seat and the second roller seat are installed on the car surface; three adjacent holes are opened on the side of the horizontal air duct between the first roller seat and the second roller seat, and the holes on both sides provide negative pressure for the concentrated spinning special-shaped tube. The horizontal air duct is connected to the air pipe through the concentrated spinning first joint and the concentrated spinning second joint, and then connected to the concentrated spinning special-shaped tube; the middle hole is connected to the air pipe through the flute tube joint and the variable diameter throttling tube, and then connected to the cotton suction flute tube.

5. The single-duct low-energy accumulation spinning system according to claim 1, Features: The cross-sectional structure of the variable diameter throttling pipe is cylindrical, symmetrical along the axial middle cross-section, the middle section is a circular hole with equal diameter, and both ends are conical open structures.

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