A duct cleaner
By setting up an air intake chamber and a cleaning chamber inside the stretcher, high-speed airflow and vertically set cleaning doors are used to scrape off the fibers in the channel, solving the cleaning difficulties caused by fiber adhesion and improving cleaning efficiency and safety.
Patent Information
- Application Number
- CN202410082655.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2044-01-19
AI Technical Summary
In the existing technology, the adhesion of fibers to the side wall of the stretcher channel makes cleaning difficult, and manual cleaning is time-consuming, labor-intensive, and poses safety hazards.
Design a stretcher with an air inlet chamber and a cleaning chamber. High-speed airflow and a cleaning door scrape the fibers in the channel from the width direction. The cleaning door is set perpendicular to the fiber ribs to facilitate the scraping of solidified fibers. A guide groove leads out the fibers, and a telescopic component controls the movement of the cleaning door.
It achieves efficient cleaning of fibers within the cleaning channel, avoiding problems such as fiber accumulation and incomplete scraping, thus improving cleaning efficiency and safety.
Smart Images
Figure CN117987941B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of textiles, and more particularly, it relates to a drawing device capable of cleaning a duct. BACKGROUND
[0002] Spunbond nonwoven fabric is formed by extruding and stretching polymer into continuous filaments, laying the filaments into a web, and then converting the web into nonwoven fabric through self-bonding, thermal bonding, chemical bonding, or mechanical reinforcement methods.
[0003] The melted material is extruded through the screw extruder and enters the drawing device after passing through the cold air box, so that the fibers are drawn to form slender fibers, which are finally injected onto the screen curtain and laid in a cross pattern to form a web, which is then conveyed to the hot calender for consolidation. The drawing device draws the melted material through high-speed airflow. The melted material adheres to the duct wall. Over time, the fibers on the duct wall will solidify, and the fibers on the duct wall will become thicker, affecting the drawing effect of the drawing device.
[0004] Currently, the cleaning method for the duct in the factory is generally manual cleaning. The cleaning cloth is placed in the duct, and then two people pull and wipe the cleaning cloth in the duct from top to bottom, which is time-consuming and labor-intensive, and has certain safety hazards.
[0005] Therefore, how to handle the adhesion of fibers on the duct wall is a technical problem to be solved by the present application. SUMMARY
[0006] In view of the deficiencies in the prior art, a drawing device capable of cleaning a duct is provided, which can scrape off the fibers adhered in the duct through a cleaning door.
[0007] A drawing device capable of cleaning a duct, the drawing device is provided with a duct for the fibers to pass through, and the drawing device is provided with an air inlet cavity communicated with the duct, the air inlet cavity is communicated with the duct through an air inlet, and the air inlet cavity is used to communicate with an external air inlet device, so that high-speed airflow enters the duct from the air inlet cavity. The drawing device is also provided with a cleaning cavity communicated with the duct, the cleaning cavity is arranged in the width direction of the duct, and the cleaning cavity is provided with a cleaning door, the cleaning door enters the duct from the width direction of the duct, so as to scrape off the fibers on the side wall of the duct.
[0008] In summary, the technical scheme has the following beneficial effects: because the fiber is thin after being stretched, the thickness of the duct is thin, the width direction of the fiber after being laid into a web is the width direction of the draft device, the moving direction of the fiber laying is the height direction of the draft device, the fiber flows from top to bottom in the duct, and the airflow in the air inlet cavity is blown from the top of the duct to the bottom, so the fiber attached to the flow trajectory on the side wall of the duct is in a vertical rib shape, if the fiber does not solidify, it can be easily scraped off, if the fiber solidifies, it needs to be scraped off from the width direction of the duct, that is, the horizontal direction. The cleaning door of the present application is arranged in the width direction of the duct, and the direction of the cleaning door into the duct is perpendicular to the fiber rib, so that the solidified fiber rib can be easily scraped off, and the situation of not being scraped off completely due to slipping does not occur. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 Fig. 1 is a longitudinal sectional view of a draft device with a cleanable duct;
[0010] Figure 2 Fig. 2 is a schematic view of a duct of a draft device that can be cleaned;
[0011] Figure 3 Fig. 3 is a schematic view of an air inlet cavity of a draft device that can be cleaned;
[0012] Figure 4 Fig. 4 is a schematic view of a cleaning cavity of a draft device that can be cleaned;
[0013] Figure 5 Fig. 5 is a schematic view of a cleaning door of a draft device that can be cleaned;
[0014] Figure 6 Fig. 6 is a schematic view of a beveled blade head of a draft device that can be cleaned;
[0015] Figure 7 Fig. 7 is a first sectional view of a cleaning door of a draft device that can be cleaned;
[0016] Figure 8 Fig. 8 is a second sectional view of a cleaning door of a draft device that can be cleaned;
[0017] Figure 9 Fig. 9 is a third sectional view of a cleaning door of a draft device that can be cleaned;
[0018] Figure 10 Fig. 10 is a fourth sectional view of a cleaning door of a draft device that can be cleaned;
[0019] Figure 11 Fig. 11 is a closed schematic view of a cleaning door of a draft device that can be cleaned.
[0020] Reference numerals: 10, stretcher; 11, passageway; 12, air inlet chamber; 13, air inlet; 14, cleaning chamber; 15, telescopic chamber; 16, gripping port; 20, cleaning door; 21, guide groove; 22, slanted shovel head; 23, cleaning port; 30, telescopic component. Detailed Implementation
[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.
[0022] like Figures 1-4 As shown, a drafter 10 that can clean a channel 11 has a channel 11 for fibers to pass through. An air inlet chamber 12 communicating with the channel 11 is also provided in the drafter 10. The air inlet chamber 12 is connected to the channel 11 through an air inlet 13. The air inlet chamber 12 is used to communicate with an external air intake device, so that a high-speed airflow enters the channel 11 from the air inlet chamber 12. A cleaning chamber 14 communicating with the channel 11 is also provided in the drafter 10. The cleaning chamber 14 is located in the width direction of the channel 11. A cleaning door 20 is provided in the cleaning chamber 14. The cleaning door 20 enters the channel 11 from the width direction of the channel 11, thereby scraping off the fibers on the side wall of the channel 11. Because the fibers are very thin after being stretched, the channel 11 is relatively thin. The width direction of the fiber web is the width direction of the stretcher 10, and the fiber laying and moving direction is the height direction of the stretcher 10. The fibers flow from top to bottom in the channel 11, and the airflow in the air inlet chamber 12 also blows from the top to the bottom of the channel 11. Therefore, the vertical ridges on the flow trajectory of the fibers attached to the side wall of the channel 11 can be easily scraped off if the fibers have not solidified. If the fibers have solidified, they need to be scraped off from the width direction of the channel 11, that is, the horizontal direction. The cleaning door 20 of this application is set on the width direction side of the channel 11. The direction in which the cleaning door 20 enters the channel 11 is perpendicular to the fiber ridges, so that the solidified fiber ridges can be easily scraped off cleanly without slipping and incomplete scraping. The airflow entering the passageway 11 through the air inlet 13 in the air intake chamber 12 is downward, and the air intake and external air intake equipment are connected by a pipe.
[0023] The cleaning cavity 14 is provided with two, two cleaning cavities 14 are provided on both sides of the width direction of the flue 11, and the cleaning door 20 is provided with two and is located in the two cleaning cavities 14, and the width of one cleaning door 20 is half of the width of the flue 11. Because the thickness of the flue 11 is thin, if the fiber is scraped from one side to the other side of the flue 11, the fiber may be accumulated in the flue 11. In order to avoid this situation, the cleaning door 20 enters the flue 11 from both sides to scrape the fiber, so as to avoid the accumulation of too much fiber. The width of one cleaning door 20 is half of the width of the flue 11, and the two cleaning doors 20 finally abut in the center of the flue 11, and the two doors can clean the flue 11 completely. The width of the cleaning door 20 is greater than that of the cleaning cavity 14, so that part of the width of the cleaning door 20 is located in the flue 11, which can make the cleaning door 20 enter the flue 11 more easily, and will not collide due to error.
[0024] As shown in Figure 5 and Figure 6 , the two cleaning doors 20 facing the flue 11 are provided with guide grooves 21, and the guide grooves 21 are provided along the height direction of the cleaning door 20. The guide groove 21 can make the scraped fiber flow out of the guide groove 21, avoid the fiber from gathering in front of the moving cleaning door 20, and the guide groove 21 can make the two cleaning doors 20 abut without causing the accumulation of fiber, and the melted fiber or the solidified fiber can flow out of the draft device 10 through the guide groove 21.
[0025] The opening size of the side of the guide groove 21 facing the flue 11 is the same as the thickness of the flue 11, and the width of the side of the guide groove 21 away from the flue 11 is narrower than the width of the side facing the flue 11, so that the side of the cleaning door 20 facing the flue 11 forms two inclined spade heads 22. The side of the cleaning door 20 facing the flue 11 forms two sharp inclined spades, so that the fiber on the side wall of the flue 11 can be easily scraped off, and the deeper the depth of the flue 11, the flatter the inclined spade head 22, the sharper it is, and the fiber scraped off is more easily guided into the guide groove 21 by the inclined spade head 22. The cross section of the guide groove 21 can be V-shaped or U-shaped.
[0026] The draft device 10 is chamfered above the duct 11, so that the inlet of the duct 11 is larger than the outlet of the duct 11, the shape of the cleaning door 20 is the same as that of the duct 11; the bevel head 22 and the cleaning door 20 are detachably connected. The bevel head 22 may be used for a long time, and fiber accumulation in the inner wall of the guide groove 21 or the bevel head 22 may become blunt, so the bevel head 22 needs to be cleaned and replaced after a long time of use. In order to facilitate cleaning and replacement, the bevel head 22 and the cleaning door 20 are slidably connected in the up-down direction to achieve detachable connection. The duct 11 is chamfered to form a bell mouth, which can allow more gas to enter when the duct 11 inhales, and can prevent the bevel head from sliding out downward. The upper part of the cleaning door 20 forms a bell head matching the bell mouth, and the bevel head and the bell head on the upper part of the cleaning door 20 are connected by a dovetail groove structure and are slidably connected in the up-down direction. The dovetail groove structure allows the bevel head to move along the width direction with the cleaning door 20.
[0027] The draft device 10 is chamfered above the duct 11, so that the inlet of the duct 11 is larger than the outlet of the duct 11, the shape of the cleaning door 20 is the same as that of the duct 11; the bevel head 22 and the cleaning door 20 are detachably connected. The bevel head 22 may be used for a long time, and fiber accumulation in the inner wall of the guide groove 21 or the bevel head 22 may become blunt, so the bevel head 22 needs to be cleaned and replaced after a long time of use. In order to facilitate cleaning and replacement, the bevel head 22 and the cleaning door 20 are slidably connected in the up-down direction to achieve detachable connection. The duct 11 is chamfered to form a bell mouth, which can allow more gas to enter when the duct 11 inhales, and can prevent the bevel head from sliding out downward. The upper part of the cleaning door 20 forms a bell head matching the bell mouth, and the bevel head and the bell head on the upper part of the cleaning door 20 are connected by a dovetail groove structure and are slidably connected in the up-down direction. The dovetail groove structure allows the bevel head to move along the width direction with the cleaning door 20.
[0028] The two cleaning doors 20 also have a removal opening 23 on the side facing the duct 11. The height of the removal opening 23 is the same as that of the air inlet 13, and the removal opening 23 is arranged along the thickness direction of the cleaning door 20 to communicate the air inlet 13 and the guide groove 21. When the two cleaning doors 20 are closed in the duct 11, the fibers are all collected in the guide groove 21. At this time, the fibers may not flow easily or slowly in the guide groove 21. Because the removal opening 23 is arranged to communicate the air inlet 12 and the guide groove 21, the external equipment inhales air, so that the downward air flow is generated in the guide groove 21 to help the fibers in the guide groove 21 to be discharged from the bottom of the draft device 10.
[0029] As shown in Figure 7 and Figure 8 , Figure 6 is the upper cross section of the guide groove 21, Figure 7 is the lower cross section of the guide groove 21, and the depth of the guide groove 21 is deeper and deeper along the vertical downward direction. Because the fibers are finally discharged from the bottom of the guide groove 21, the lower guide groove 21 accumulates more fibers, so the depth of the lower guide groove 21 is a little deeper to facilitate the discharge of the fibers. At the same time, the lower guide groove 21 is deeper than the upper guide groove 21, so that the removal opening 23 can generate greater suction force when the air inlet 12 is used to assist cleaning, and the fibers in the upper guide groove 21 can flow to the lower guide groove 21 more easily.
[0030] As shown in Figure 9 andFigure 10 As shown, Figure 8 is the upper section of the guide groove 21, Figure 9 is the lower section of the guide groove 21, the cross-sectional area of the guide groove 21 becomes larger along the vertically downward direction. The larger the cross-sectional area of the guide groove 21, the more fibers can be accommodated. The cross-sectional area of the guide groove 21 can be increased by increasing the depth of the guide groove 21, or by different opening shapes.
[0031] As Figure 11 shown, the drawing frame 10 is provided with a telescopic cavity 15, the telescopic cavity 15 and the cleaning cavity 14 are communicated, the telescopic cavity 15 is provided with a telescopic piece 30, the telescopic piece 30 is connected with the two cleaning doors 20 respectively, and is used for controlling the cleaning doors 20 to enter and exit the duct 11. The telescopic piece 30 is a control piece such as a telescopic rod which can control linear movement, and the same effect can also be achieved by using a track to control the cleaning doors 20. When the telescopic piece 30 is contracted, the two cleaning doors 20 on the sides are driven to move to the duct 11, so that the fibers on the sidewall of the duct 11 are removed, when the two cleaning doors 20 move to the deepest position and abut against each other, air can be introduced through an external air inlet device, so that the air is blown out from the cleaning groove downward, thereby taking out the fibers in the cleaning groove, finally the telescopic piece 30 is controlled to be extended, so that the cleaning doors 20 are withdrawn from the duct 11 and reset in the cleaning cavity 14 to wait for the next cleaning. After each use of the drawing frame 10, the cleaning doors 20 can be cleaned once, and the cleaning doors 20 can also be used to clean once at the beginning of each use of the drawing frame 10.
[0032] The above is only the preferred embodiment of the present application, the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical scheme belonging to the idea of the present application is also within the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application can also be considered as the protection scope of the present application.
Claims
1. A draft device capable of cleaning a channel, the draft device (10) having a channel (11) for fibers to pass through, the draft device (10) having an air inlet cavity (12) in communication with the channel (11), the air inlet cavity (12) being in communication with the channel (11) through an air inlet (13), the air inlet cavity (12) being configured to communicate with an external air inlet device such that a high speed air stream enters the channel (11) from the air inlet cavity (12), characterized in that, The drawing frame (10) is further provided with a cleaning cavity (14) communicated with the flue (11), the cleaning cavity (14) is arranged in the width direction of the flue (11), the cleaning cavity (14) is provided with a cleaning door (20), the cleaning door (20) enters the flue (11) from the width direction of the flue (11), so that the fiber on the side wall of the flue (11) is scraped off.
2. A duct cleanable draftsman according to claim 1, wherein, The cleaning cavity (14) is provided with two cleaning cavities (14) arranged on both sides of the width direction of the flue (11), the cleaning door (20) is provided with two cleaning doors (20) arranged in the two cleaning cavities (14), and the width of one cleaning door (20) is half of the width of the flue (11).
3. A duct cleanable draftsman according to claim 2, wherein, The cleaning door (20) is provided with a guide groove (21) on the side facing the flue (11), and the guide groove (21) is arranged in the height direction of the cleaning door (20).
4. A duct cleanable draftsman according to claim 3, wherein, The opening size of the guide groove (21) on the side facing the flue (11) is the same as the thickness of the flue (11), and the width of the side of the guide groove (21) away from the flue (11) is smaller than the width of the side facing the flue (11), so that two inclined spade heads (22) are formed on the side of the cleaning door (20) facing the flue (11).
5. A duct cleanable draftsman according to claim 4, wherein, The drawing frame (10) is chamfered above the flue (11), so that the inlet of the flue (11) is larger than the outlet of the flue (11), and the shape of the cleaning door (20) is the same as the shape of the flue (11); The inclined spade head (22) and the cleaning door (20) are detachably connected.
6. A duct cleanable draftsman according to claim 5, wherein, The drawing frame (10) is provided with a clamping opening (16) at the intersection of the two inclined spade heads (22).
7. The duct cleanable draftsman of claim 3, wherein, The side of the cleaning door (20) facing the flue (11) is further provided with a cleaning opening (23), the height of the cleaning opening (23) is the same as the height of the air inlet (13), and the cleaning opening (23) is arranged in the thickness direction of the cleaning door (20) and is communicated with the air inlet (13) and the guide groove (21).
8. The duct cleanable draftsman of claim 3, wherein, The depth of the guide groove (21) is deeper and deeper along the vertically downward direction.
9. The duct cleanable draftsman of claim 3, wherein, The cross-sectional area of the guide groove (21) is larger and larger along the vertically downward direction.
10. A duct cleanable draftsman according to any of claims 1-9, characterized in that, The drawing frame (10) is provided with a telescopic cavity (15), the telescopic cavity (15) is communicated with the cleaning cavity (14), the telescopic cavity (15) is provided with a telescopic part (30), the telescopic part (30) is connected with the two cleaning doors (20) respectively, and is used for controlling the cleaning door (20) to enter and exit the flue (11).
Citation Information
Patent Citations
OPEN END SPINNING device
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Connecting pipeline of dust remover
CN219317880U