Side air blowing device for producing nonwoven fabric

Abstract

The application discloses a side blowing device for producing non-woven fabric and belongs to the technical field of non-woven fabric. The device comprises an air bellow and multiple air channels. The left and right sides of the air channels are provided with side plates, and the bottom of the air channels is provided with a working traction device. Two to four adjacent air channels form an air channel unit. The left and right ends of the air bellow and the adjacent two air channel units are provided with fixing plates. Each air channel unit is detachably provided with a baffle. The bottom of each air channel unit and in front of the working traction device is provided with an emergency traction device. The baffle comprises an inclined plate and a straight plate. The straight plate is located in front of the emergency traction device and the side plate. The left and right ends of the front side of the inclined plate are provided with upper hanging pieces, and multiple containing notches are arranged on the upper hanging pieces. The fixing plate is provided with lower hanging pieces. The front side of the air bellow is provided with a flip cover. During normal work, the baffle is removed, the flip cover is turned up, and a single spinning yarn enters the working traction device. During emergency, multiple spinning yarns of the same air channel unit enter the emergency traction device. During non-work, the baffle is not removed.

Description

Technical Field

[0001] This invention belongs to the field of nonwoven fabric technology, and specifically relates to a side-blowing device for producing nonwoven fabrics. Background Technology

[0002] The preparation process of nonwoven fabric is as follows: the mixing device mixes the raw material particles according to the formula, the crystallization bed processes the raw material, the drying device dries the raw material, the extrusion device extrudes the raw material to obtain melt, the spinning box spins the yarn, the side blowing device cools the spinning yarn, the web laying device lays the web, the needle punching device needles the yarn, and the slitting and winding device obtains the nonwoven fabric.

[0003] For example, patent application number CN201820026750.X discloses a side-blowing cooling channel for spinning, including a cooling channel, a passageway, and a side-blowing air duct disposed on one side of the cooling channel. The passageway is located below the cooling channel and connected to the cooling channel. The cooling channel includes an upper water cooling channel and a lower air cooling channel. An interlayer is provided outside the channel, and cooling water is passed through the interlayer to form the upper water cooling channel. A side-blowing air duct is disposed on one side of the lower air cooling channel.

[0004] For example, the patent application number CN201910510402.9 discloses a method for improving the uniformity of products in a spunbond nonwoven fabric production line. The steps are as follows: (1) Spinning: Using a spinning box, the melt enters the melt distribution pipe through the melt inlet of the spinning box, and then enters the spinning assembly through a metering pump. It is then sprayed out from the spinneret holes of the spinning assembly to form nascent filaments; (2) Drawing: The filament bundles sprayed out through the spinneret holes of the spinning assembly are cooled by side blowing air, and then drawn by a drawing device; (3) Web forming: Each spinneret in the spinning box is equipped with a drawing device. The long filaments drawn by the high-speed airflow are drawn by the drawing device and then formed into a web by the web forming device.

[0005] Various problems can arise during the production of nonwoven fabrics, such as machine shutdowns for maintenance, substandard yarn output from the spinning box, subsequent web-laying machine malfunctions, and abnormal cold air flow from the side-blowing device. This necessitates that the side-blowing device have an emergency function, a feature not addressed in existing technologies. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a side-blowing device for producing nonwoven fabrics, featuring an emergency function to prevent substandard spun yarns from being output to subsequent processes and to prevent disordered dripping of molten slurry. The technical solution is as follows:

[0007] This invention provides a side-blowing device for producing nonwoven fabrics. The device includes a windbox and multiple air ducts arranged side-by-side on its front side. The windbox has an air outlet that mates with the air ducts. Each air duct is vertically oriented, with side plates on its left and right sides, a molten slurry outlet at its top, and a working traction device at its bottom, directly below the molten slurry outlet. Every 2-4 adjacent air ducts form a duct unit. Fixing plates are provided at both ends of the windbox and between adjacent duct units. These fixing plates are vertically oriented. Each duct unit has a detachable baffle. An emergency traction device is located at the bottom of each duct unit, in front of the working traction device, and is positioned in front of the side plates. The baffle includes an inclined plate and a straight plate arranged sequentially from top to bottom. The straight plate is vertically oriented and positioned below the emergency traction device. The oblique plate is located in front of the side plate; it is obliquely forward from top to bottom, with upper hanging parts at its left and right ends, and multiple receiving notches that cooperate with the side plate are arranged side by side on its upper part; the left and / or right sides of the fixed plate are provided with lower hanging parts that cooperate with the upper hanging parts; the front side of the air box and the upper side of the working traction device are provided with a flip-up cover, which covers the working traction device and can be flipped up to expose the working traction device; during normal operation, the baffle is removed, the flip-up cover is flipped up, and a single spinning thread enters the corresponding working traction device; in an emergency, the baffle is removed, the flip-up cover covers the working traction device, and multiple spinning threads of the same air duct unit enter the emergency traction device downward; when not in operation, the left and right ends of the baffle are suspended on the corresponding fixed plates, the left and right ends of which are adjacent to the fixed plates on the corresponding sides, and the upper end of which rests against the air box.

[0008] In this embodiment of the invention, the upper suspension member is a circular hanging rod arranged in the left-right direction; the lower suspension member is an arc-shaped groove arranged in the left-right direction and cooperating with the circular hanging rod, which is located at the front of the fixed plate; when the baffle is suspended on the fixed plate, the upper suspension member is located in the lower suspension member at the corresponding end.

[0009] Specifically, in this embodiment of the invention, both the working traction device and the emergency traction device are vertically arranged; the accommodating notch is vertically arranged and is clearance-fitted with the side plate; the emergency traction device is located in the middle of the bottom of the air duct unit, and its inner diameter is larger than that of the working traction device.

[0010] Furthermore, in this embodiment of the invention, the upper end of the inclined plate is folded upward to form a vertical first folded edge, which is parallel to the front side of the bellows and rests against the bellows; the left and right ends of the inclined plate are folded upward to form a vertical second folded edge, which is parallel to the fixed plate and adjacent to the fixed plate.

[0011] Preferably, in this embodiment of the invention, the front side of the bellows is provided with multiple rectangular frames arranged side by side, and the bottom of the frame is provided with a guide plate; the rectangular frames are vertically arranged, with open front and bottom sides, and multiple air ducts arranged side by side on the top to form an air duct unit, and multiple strip-shaped notches arranged side by side on the rear frame side to form an air outlet; two adjacent rectangular frames are closely attached together, and the two closely attached frame edges form a fixing plate, and the left frame edge of the left rectangular frame and the right frame edge of the right rectangular frame respectively form the fixing plates at both ends; the lower suspension component The side plates are located on the left and right sides of the rectangular frame, with their upper and rear ends fixed to the upper and rear sides of the rectangular frame, respectively. The guide plate is arranged in the left and right direction, diagonally forward from top to bottom, and located directly below all the rectangular frames. The air outlet is a vertically arranged rectangular opening, extending from the upper end of the air duct to the lower part of the air duct, with a non-perforated area between its lower end and the guide plate. The rear end of the flip cover is hinged to the non-perforated area. The emergency puller and the working puller are respectively located at the front and rear of the guide plate.

[0012] Furthermore, in this embodiment of the invention, the upper frame of the rectangular frame is provided with multiple sliding grooves arranged side by side, the sliding grooves are arranged in the front-back direction, and each side plate is provided with one sliding groove; the side plate is arranged in the front-back direction, its upper end is located in the sliding groove, its rear end is fixed to the rear frame of the rectangular frame by multiple fasteners arranged side by side, its lower end is located adjacent to the upper part of the guide plate, and its front-back width is less than the width of the fixing plate; the fixing plate is located adjacent to the upper part of the guide plate, and the fasteners are located on the side of the side plate away from the air outlet 3.

[0013] In this embodiment of the invention, the baffle is located at the upper part of the air duct to separate the air duct vertically, and the straight plate is located in front of the guide plate and has a handle on its front side.

[0014] In one implementation of the present invention, the flip cover is a rectangular plate arranged in the front-to-back direction; a support platform is provided on the non-perforated area and on the lower side of the flip cover, the rear end of the flip cover is hinged to the upper side of the support platform, and an upward holding mechanism for keeping the flip cover flipped up is provided on the front side of the support platform. The support platform and the upward holding mechanism are both located above and behind the corresponding working traction device; the upward holding mechanism includes a stop bar, the upper side of the support platform is flush with the upper side of the working traction device; the lower end of the stop bar is rotatably mounted on the support platform, and its upper end can rotate upward to above the support platform; when the flip cover is placed on the working traction device, the upper end of the stop bar is located below the upper side of the support platform; when the flip cover is flipped up, the stop bar rotates upward, and the upper end of the stop bar rotates to above the support platform and its upper end is located directly in front of the flip cover.

[0015] In another implementation of the present invention, the flip cover is a metal rectangular plate arranged in the front-back direction, and its rear end is hinged to the front side of the non-perforated area by a hinge; a magnet is provided on the rear side of the non-perforated area and adjacent to the upper side of the flip cover; when the flip cover is flipped up, the flip cover is vertically arranged and magnetically attracted to the front side of the non-perforated area.

[0016] Specifically, in this embodiment of the invention, each rectangular frame is provided with two air ducts arranged side by side on the left and right, and each rectangular frame is provided with an emergency traction device; then every two working traction devices correspond to one emergency traction device, and the emergency traction device is located directly in front of the midpoint of the line connecting the corresponding two working traction devices; the inclined plate is provided with four accommodating notches arranged side by side on the left and right.

[0017] The beneficial effects of the technical solution provided by the embodiments of the present invention are as follows: The embodiments of the present invention provide a side-blowing device for producing nonwoven fabrics, which has an emergency function to prevent unqualified spun yarns from being output to subsequent processes (sent to the emergency traction device and shielded from the working traction device) and to prevent disorderly dripping of molten slurry (after the machine is stopped (molten slurry may drip downwards from the outlet), a baffle is installed to guide the molten slurry forward (usually it adheres to the upper side of the baffle, which can be cleaned after removing the baffle), preventing it from dripping onto the guide plate, working traction device, and emergency traction device, thus avoiding blockage of the working traction device). In addition, the present invention is designed with a modular structure, allowing for replacement of the rectangular frame and side plates, facilitating adjustment and maintenance. For producing nonwoven fabrics of different widths, the baffles can be used to shield the air ducts at both ends. Attached Figure Description

[0018] Figure 1 This is a diagram showing the usage status of a side-blowing device for producing nonwoven fabrics during normal operation.

[0019] Figure 2 This is a diagram showing the usage status of a side-blowing device for producing nonwoven fabrics during emergency operations.

[0020] Figure 3 This is a diagram showing the usage status of a side-blowing device for producing nonwoven fabrics when it is not in operation;

[0021] Figure 4 This is a side view of a side-blowing device for producing nonwoven fabrics;

[0022] Figure 5 This is a sectional view of the baffle.

[0023] In the diagram: 1. Air box, 2. Air duct, 3. Air outlet, 4. Side plate, 5. Working traction device, 6. Fixing plate, 7. Baffle, 8. Emergency traction device, 9. Handle, 10. Upper hanging part, 11. Lower hanging part, 12. Flip cover, 13. Accommodation notch, 14. Guide plate, 15. Rectangular frame, 16. Non-perforated area, 17. Slide groove, 18. Fixing part, 19. Support platform, 20. Spinning. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] See Figure 1-5 Example 1 provides a side-blowing device for producing nonwoven fabrics. The device includes a wind box 1 and multiple air ducts 2 arranged side-by-side on its front side. The air ducts 2 are vertically arranged, with a gap between adjacent air ducts 2. The front side of the wind box 1 has an air outlet 3 (specifically a vertically arranged rectangular opening) that cooperates with the air ducts 2. Furthermore, multiple air ducts 2 can also be arranged side-by-side on the rear side of the wind box 1, forming a symmetrical front-rear structure.

[0027] The air duct 2 is vertically arranged, with side plates 4 on its left and right sides, a molten slurry outlet at its top (connected to the spinning box at the top of the air box 1), and a working traction device 5 at its bottom. The working traction device 5 is vertically arranged and located directly below the molten slurry outlet.

[0028] Each group of 2-4 adjacent air ducts 2 constitutes an air duct unit. Fixing plates 6 are installed at both ends of the air box 1 and between adjacent air duct units, with the fixing plates 6 arranged vertically. The fixing plate 6 between two adjacent air duct units is located in the middle between two adjacent side plates 4. Each air duct unit is detachably equipped with a baffle 7 to separate the air duct 2 vertically. The baffle 7 and the fixing plate 6 are arranged alternately, and the baffle 7 is used when not in operation. Specifically, the baffle 7 is located at the upper part of the air duct 2.

[0029] At the bottom of each duct unit and in front of the working puller 5, there is an emergency puller 8, which is used in an emergency. The emergency puller 8 is located in front of the side plate 4, is vertically arranged, and is located in the middle of the bottom of the duct unit. Its inner diameter is larger than that of the working puller 5.

[0030] The baffle 7 comprises an inclined plate and a straight plate arranged sequentially from top to bottom. The straight plate is vertically positioned in front of the emergency puller 8 and the side plate 4, with its upper end connected to the front end of the inclined plate, and a handle 9 on its front side. Specifically, two handles 9 are arranged side-by-side on the front side of the straight plate, and the handles 9 are vertically arranged U-shaped handles. The inclined plate is arranged diagonally forward from top to bottom, with upper suspension members 10 at both ends of its front side, and multiple receiving notches 13 arranged side-by-side on its upper part to cooperate with the side plate 4, with an inclination angle of 30-60°. The left and / or right sides of the fixing plate 6 are provided with lower suspension members 11 that cooperate with the upper suspension members 10. The receiving notches 13 are vertically positioned and are clearance-fitted with the side plate 4. Specifically, for the fixing plates 6 at both ends, only the left or right side is provided with lower suspension members 11, while the non-end fixing plates 6 are provided with lower suspension members 11 on both the left and right sides. Specifically, the upper suspension member 10 is a circular hanging rod arranged in the left-right direction. The lower suspension member 11 is an arc-shaped groove (specifically a semi-circular groove) arranged in the left and right direction and cooperating with the circular hanging rod, located at the front of the fixing plate 6. When the baffle 7 is suspended on the fixing plate 6, the upper suspension member 10 is located in the lower suspension member 11 at the corresponding end.

[0031] The bellows 1 has a flip-up cover 12 on its front side and above the working traction device 5. The flip-up cover 12 covers the working traction device 5 and can be flipped up to expose the working traction device 5. During normal operation, the flip-up cover 12 is flipped up.

[0032] During normal operation, baffle 7 is removed, and flip cover 12 is flipped up, allowing a single spinning thread 20 to enter the corresponding working traction device 5. In an emergency, baffle 7 is removed, and flip cover 12 covers the working traction device 5, allowing multiple spinning threads 20 from the same air duct unit (e.g., two spinning threads 20 with their lower parts located in front of side plate 4) to enter the emergency traction device 8. When not in operation, the left and right ends of baffle 7 are suspended on the corresponding fixed plates 6, adjacent to the corresponding side fixed plates 6, with its upper end resting against the air box 1. Side plate 4 is located in the corresponding receiving notch 13. Flip cover 12 preferably covers the working traction device 5.

[0033] Furthermore, in this embodiment of the invention, the upper end of the inclined plate is folded upward to form a vertical first fold (1-3cm wide), which is parallel to the front side of the bellows 1 and rests against the bellows 1. The left and right ends of the inclined plate are folded upward to form a vertical second fold (0.5-1.5cm wide), which is parallel to and adjacent to the fixing plate 6.

[0034] Example 2

[0035] See Figure 1-3Example 2 provides a side-blowing device for producing nonwoven fabrics. Its structure is basically the same as that of Example 1, except that: in this example, the front side of the air box 1 has multiple rectangular frames 15 arranged side-by-side, and a guide plate 14 is provided at its bottom. The rectangular frames 15 are vertically arranged, with open front and bottom sides. Multiple (2-4) air ducts 2 are arranged side-by-side on the top side to form an air duct unit. Multiple (2-4) strip-shaped notches are arranged side-by-side on the rear frame side to form an air outlet 3, including an upper frame side, a left frame side, a right frame side, and a rear frame side. Two adjacent rectangular frames 15 are tightly attached together, and their two tightly attached frame sides form a fixing plate 6. The left frame side of the left rectangular frame 15 and the right frame side of the right rectangular frame 15 respectively form the fixing plates 6 at both ends. The lower suspension member 11 is provided on the left and right frame sides of the rectangular frame 15, and the upper and rear ends of the side plate 4 are fixed to the upper and rear frame sides of the rectangular frame 15 respectively. The air deflector 14 is arranged horizontally and diagonally forward from top to bottom, located directly below all rectangular frames 15 and behind the straight plate. The air outlet 3 is a vertically arranged rectangular opening, extending from the upper end of the air duct 2 to its lower end. The area between its lower end and the air deflector 14 is a non-perforated area 16 (vertical length 15-40cm). The rear end of the flip cover 12 is hinged to the non-perforated area 16. The emergency puller 8 and the working puller 5 are respectively located at the front and rear of the air deflector 14.

[0036] Furthermore, in this embodiment of the invention, the upper frame of the rectangular frame 15 is provided with multiple sliding grooves 17 arranged side by side. The sliding grooves 17 are arranged in the front-back direction and cooperate with the side plates 4. Each side plate 4 is provided with one sliding groove 17. The side plate 4 is arranged in the front-back direction, with its upper end located in the sliding groove 17, and its rear end fixed to the rear frame edge of the rectangular frame 15 by multiple fasteners 18 arranged side by side. Its lower end is located adjacent to and above the guide plate 14. Its front-back width is less than the width of the fixing plate 6, and its number is twice the number of air ducts 2. Specifically, it is a rectangular plate. The fixing plate 6 is located adjacent to and above the guide plate 14. The fasteners 18 are located on the side of the side plate 4 away from the air outlet 3. Specifically, they are locking bolts arranged in the front-back direction, and the rear end of the side plate 4 is provided with a locking ring that cooperates with the locking bolt.

[0037] Example 3

[0038] See Figure 1-4Example 3 provides a side-blowing device for producing nonwoven fabrics, whose structure is basically the same as that of Example 1, except that the flip cover 12 in this example is a rectangular plate arranged in the front-to-back direction. A support platform 19 (specifically, a vertically arranged rectangular platform) is provided on the non-perforated area 16 and located on the lower side of the flip cover 12. The rear end of the flip cover 12 is hinged to the upper side of the support platform 19. The front side of the support platform 19 is provided with an upward-flipping holding mechanism for keeping the flip cover 12 flipped up. Both the support platform 19 and the upward-flipping holding mechanism are located above and behind the corresponding working traction device 5. The upward-flipping holding mechanism includes a stop bar, etc. The upper side of the support platform 19 is flush with the upper side of the working traction device 5. The lower end of the stop bar is rotatably (via a front-to-back rotating shaft) mounted on the support platform 19, and its upper end can rotate upward to the top of the support platform 19. When the flip cover 12 is placed on the working traction device 5 (at this time, the flip cover 12 is set horizontally in the front-to-back direction), the upper end of the stop bar (which can be set in the left-to-right direction at this time) is located below the upper side of the support platform 19. When the flip cover 12 is flipped up (at this time, the flip cover 12 is set vertically), the stop bar rotates upward, and the upper end of the stop bar (which can be set vertically at this time) rotates to the top of the support platform 19 and its upper end is located directly in front of the flip cover 12.

[0039] Example 4

[0040] Example 4 provides a side-blowing device for producing nonwoven fabrics, whose structure is basically the same as that of Example 1, except that: in this example, the flip cover 12 is a metal rectangular plate arranged in the front-back direction, and its rear end is hinged to the front side of the non-perforated area 16. The rectangular frame 15 is a metal frame. A magnet is provided on the rear side of the non-perforated area 16 and adjacent to and above the flip cover 12. When the flip cover 12 is flipped up, the flip cover 12 (at this time, the flip cover 12 is located directly in front of the magnet) is vertically arranged and magnetically attracted to the front side of the non-perforated area 16.

[0041] Example 5

[0042] Example 5 provides a side-blowing device for producing nonwoven fabrics, whose structure is basically the same as that of Example 1, except that: in this example, there are 10 rectangular frames 15. Each rectangular frame 15 has two air ducts 2 arranged side-by-side, resulting in 20 air ducts 2. Each rectangular frame 15 is equipped with an emergency puller 8. Every two working pullers 5 correspond to one emergency puller 8, resulting in 10 emergency pullers 8. The emergency puller 8 is located directly in front of the midpoint of the line connecting the corresponding two working pullers 5. There are 40 side plates 4. Four accommodating notches 13 are arranged side-by-side on the inclined plates, resulting in 40 accommodating notches 13.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A side-blowing device for producing nonwoven fabrics, characterized in that, It includes a bellows (1) and multiple air ducts (2) arranged side by side on its front side. The bellows (1) has an air outlet (3) that cooperates with the air ducts (2) on its front side. The air ducts (2) are arranged vertically, with side plates (4) on their left and right sides, a molten lava outlet at their top, and a working traction device (5) at their bottom and directly below the molten lava outlet. Its characteristic is that... Each pair of 2-4 adjacent air ducts (2) forms an air duct unit. Fixing plates (6) are provided at both ends of the air box (1) and between adjacent air duct units. The fixing plates (6) are vertically oriented. Each air duct unit is detachably equipped with a baffle (7). An emergency traction device (8) is located at the bottom of each air duct unit and in front of the working traction device (5). The emergency traction device (8) is located in front of the side plate (4). The baffle (7) includes an inclined plate and a straight plate arranged sequentially from top to bottom. The straight plate is vertically oriented and located in front of the emergency traction device (8). The inclined plate is located in front of the side plate (4); the inclined plate is arranged diagonally forward from top to bottom, and the left and right ends of its front side are provided with upper hanging parts (10), and the upper part is provided with multiple accommodating notches (13) that cooperate with the side plate (4); the left and / or right sides of the fixed plate (6) are provided with lower hanging parts (11) that cooperate with the upper hanging parts (10); the front side of the bellows (1) and the upper side of the working traction device (5) are provided with a flip cover (12) that can be flipped upward, the flip cover (12) is placed on the working traction device (5) and can be flipped upward to expose the working traction device (5); During normal operation, the baffle (7) is removed, the flip cover (12) is flipped up, and a single spinning thread (20) enters the corresponding working traction device (5); in an emergency, the baffle (7) is removed, the flip cover (12) covers the working traction device (5), and multiple spinning threads (20) of the same air duct unit enter the emergency traction device (8) downwards; when not in operation, the left and right ends of the baffle (7) are suspended on the corresponding fixed plate (6), and its left and right ends are adjacent to the fixed plate (6) on the corresponding side, and its upper end rests against the air box (1).

2. The side-blowing device for producing nonwoven fabrics according to claim 1, characterized in that, The upper suspension member (10) is a circular hanging rod arranged in the left and right direction; the lower suspension member (11) is an arc-shaped groove arranged in the left and right direction and cooperating with the circular hanging rod, which is located at the front of the fixing plate (6); when the baffle (7) is suspended on the fixing plate (6), the upper suspension member (10) is located in the lower suspension member (11) at the corresponding end.

3. The side-blowing device for producing nonwoven fabrics according to claim 1, characterized in that, Both the working traction device (5) and the emergency traction device (8) are vertically arranged; the accommodating notch (13) is vertically arranged and is clearance-fitted with the side plate (4); the emergency traction device (8) is located in the middle of the bottom of the air duct unit and its inner diameter is larger than that of the working traction device (5).

4. The side-blowing device for producing nonwoven fabrics according to claim 1, characterized in that, The upper end of the inclined plate is folded upward to form a vertical first folded edge, which is parallel to the front side of the bellows (1) and rests against the bellows (1); the left and right ends of the inclined plate are folded upward to form a vertical second folded edge, which is parallel to the fixed plate (6) and adjacent to the fixed plate (6).

5. The side-blowing device for producing nonwoven fabrics according to claim 1, characterized in that, The front side of the bellows (1) is provided with multiple rectangular frames (15) arranged side by side, and the bottom of the frame is provided with a guide plate (14); the rectangular frames (15) are arranged vertically, with open front and lower sides, and multiple air ducts (2) arranged side by side on the upper side to form an air duct unit, and multiple strip-shaped notches arranged side by side on the rear frame side to form an air outlet (3); two adjacent rectangular frames (15) are closely attached together and the two closely attached frame edges form a fixing plate (6), and the left frame edge of the left rectangular frame (15) and the right frame edge of the right rectangular frame (15) respectively form the fixing plates (6) at both ends; the lower hanging part (11) is provided on the rectangular frame (15) On the left and right sides, the upper and rear ends of the side plate (4) are fixed to the upper and rear sides of the rectangular frame (15), respectively; the guide plate (14) is set along the left and right direction, and is set diagonally forward from top to bottom, and is located directly below all the rectangular frames (15); the air outlet (3) is a vertically set rectangular opening, which extends from the upper end of the air duct (2) to the lower part of the air duct (2), and the area between its lower end and the guide plate (14) is a non-perforated area (16); the rear end of the flip cover (12) is hinged to the non-perforated area (16), and the emergency traction device (8) and the working traction device (5) are respectively set at the front and rear of the guide plate (14).

6. The side-blowing device for producing nonwoven fabrics according to claim 5, characterized in that, The upper frame of the rectangular frame (15) is provided with multiple sliding grooves (17) arranged side by side. The sliding grooves (17) are arranged in the front-back direction, and each side plate (4) is provided with one sliding groove (17). The side plate (4) is arranged in the front-back direction, with its upper end in the sliding groove (17) and its rear end fixed to the rear frame of the rectangular frame (15) by multiple fasteners (18) arranged side by side. Its lower end is located above the guide plate (14), and its front-back width is less than the width of the fixing plate (6). The fixing plate (6) is located above the guide plate (14), and the fasteners (18) are located on the side of the side plate (4) away from the air outlet (3).

7. The side-blowing device for producing nonwoven fabrics according to claim 5, characterized in that, The baffle (7) is located at the top of the air duct (2) to separate the air duct (2) vertically, and the straight plate is located in front of the guide plate (14) and has a handle (9) on its front side.

8. The side-blowing device for producing nonwoven fabrics according to claim 5, characterized in that, The flip cover (12) is a rectangular plate arranged in the front-to-back direction; a support platform (19) is provided on the non-perforated area (16) and on the lower side of the flip cover (12). The rear end of the flip cover (12) is hinged to the upper side of the support platform (19) by a hinge. The front side of the support platform (19) is provided with an upward holding mechanism for keeping the flip cover (12) flipped up. The support platform (19) and the upward holding mechanism are both located above and behind the corresponding working traction device (5). The upward holding mechanism includes a stop bar. The upper side of the support platform (19) is flush with the upper side of the working traction device (5); the lower end of the stop rod is rotatably mounted on the support platform (19), and its upper end can rotate upward to the top of the support platform (19); when the flip cover (12) is placed on the working traction device (5), the upper end of the stop rod is located below the upper side of the support platform (19); when the flip cover (12) is flipped up, the stop rod rotates upward, and the upper end of the stop rod rotates to the top of the support platform (19) and its upper end is located directly in front of the flip cover (12).

9. The side-blowing device for producing nonwoven fabrics according to claim 5, characterized in that, The flip cover (12) is a metal rectangular plate arranged in the front and back direction, and its rear end is hinged to the front side of the non-perforated area (16) by a hinge; a magnet is provided on the rear side of the non-perforated area (16) and adjacent to the top of the flip cover (12); when the flip cover (12) is flipped up, the flip cover (12) is arranged vertically and magnetically attracted to the front side of the non-perforated area (16).

10. The side-blowing device for producing nonwoven fabrics according to claim 5, characterized in that, Two air ducts (2) are arranged side by side on each rectangular frame (15), and an emergency traction device (8) is provided on each rectangular frame (15); then every two working traction devices (5) correspond to one emergency traction device (8), and the emergency traction device (8) is located directly in front of the midpoint of the line connecting the corresponding two working traction devices (5); four accommodating notches (13) are arranged side by side on the inclined plate.

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