Filtering device for dust collection pipeline

Abstract

The utility model discloses a filtering device for a dust collection pipeline, which comprises a dust collection cabinet arranged on the dust collection pipeline and communicated with the dust collection pipeline; the gate valve is installed on the dust collection pipeline, the fixed end of the gate valve is vertically inserted in the top face of the dust collection cabinet, when the telescopic end of the gate valve stretches out, the telescopic end of the gate valve is inserted in the end, close to the air outlet of the dust collection cabinet, of the dust collection pipeline, and the part, corresponding to the dust collection pipeline, of the gate valve is a filter plate; the cleaning component is movably arranged on the side, close to the gate valve, in the dust collection cabinet, the cleaning component makes contact with the filter plate, and the cleaning component is used for cleaning impurities attached to the filter plate; according to the utility model, through the matching between the gate valve and the filter plate, the gate valve can prevent the flower clothes from being blown out of the pipeline without influencing the air pressure circulation in the pipeline, and the flower clothes do not need to be additionally cleaned by workers, so that the labor intensity of the workers is reduced, and the working efficiency is improved. The cleaning part continuously cleans the filter plate so as to prevent the filter plate from being blocked by the flower clothes.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline dust collection, in particular to a filtering device for a dust collection pipeline. Background Art

[0002] The cotton fabrics and dust produced in each workshop of a cotton spinning mill are usually collected by dust collecting pipes installed in the workshop. The cotton fabrics and dust collected by each dust collecting pipe are gathered into the dust collecting main pipe through the wind pressure of the pipe and then sent to the horizontal hydraulic baler for packaging and bundling.

[0003] When the horizontal hydraulic baler is not working, the entire dust collection system is still working, but due to the irregularity of the dust, it is difficult to completely close the swing valves in each integrated pipeline. When the dust collection fan is working, the wind pressure will blow out from the gap of the swing valve, thereby blowing the dust in the pipeline out of the horizontal hydraulic baler, causing the dust to float everywhere and be difficult to clean, increasing the labor intensity of the staff. Therefore, the present application specifically proposes a filtering device for the dust collection pipeline that does not affect the operation of the dust collection system and prevents the dust from scattering. Utility Model Content

[0004] The main purpose of the utility model is to provide a filtering device for a dust collecting pipe which can prevent dust from scattering while not affecting the work of the dust collecting system.

[0005] To achieve the above object, the utility model provides a filtering device for a dust collecting duct, comprising:

[0006] A dust collecting cabinet, arranged on the dust collecting duct and communicated with the dust collecting duct;

[0007] A gate valve is installed on the dust collecting pipe and a fixed end is vertically inserted into the top surface of the dust collecting cabinet. When the telescopic end of the gate valve is extended, the telescopic end of the gate valve is inserted into one end of the dust collecting pipe close to the air outlet of the dust collecting cabinet and blocks the dust collecting pipe. The part of the gate valve corresponding to the dust collecting pipe is a filter plate, and the filter plate is used to prevent debris in the dust collecting pipe from passing through the filter plate with wind pressure.

[0008] A cleaning component is movably arranged in the dust collecting cabinet at one side close to the plug valve, and the cleaning component is in contact with the filter plate, and is used to clean the sundries attached to the filter plate.

[0009] Furthermore, a track is provided on each inner wall of both sides of the dust collecting cabinet, and the two tracks are arranged opposite to each other, the track is composed of two vertical sections and two "human" end parts spliced ​​in sequence, and teeth are provided on the vertical sections of the track, and a first slide groove corresponding to the track track is also provided in the track;

[0010] The cleaning component comprises a moving rod arranged in the dust collecting cabinet, and two ends of the moving rod are respectively slidably arranged in the first sliding groove on the inner walls of both sides of the dust collecting cabinet, and two ends of the moving rod are respectively provided with a gear, and the gear is meshed with the teeth on the corresponding track. When the moving rod moves in the vertical section of the track, each gear meshes with the teeth on the corresponding track and drives the moving rod to rotate about the axis of the moving rod. The moving rod is also provided with a cleaning roller, and the cleaning surface of the cleaning roller is in contact with the filter plate. The moving rod is also provided with a connecting frame, and a telescopic rod is vertically provided below the connecting frame, and the telescopic rod is rotatably arranged in the dust collecting cabinet, and the telescopic end of the telescopic rod is connected with the connecting frame. When the filter plate needs to be cleaned, the telescopic rod is vertically reciprocated and the cleaning roller is driven to reciprocate along the setting direction of the track by the moving rod, so that the cleaning roller scrapes the filter plate.

[0011] Furthermore, the dust collector is also provided with a collecting component, which includes a cotton collecting box arranged at one end near the air inlet of the dust collector, the feeding port of the cotton collecting box is opened at one end of the cotton collecting box near the plug valve, and a scraper is also opened at the feeding port of the cotton collecting box, and a tooth comb is arranged at one end of the scraper corresponding to the cleaning roller, and the tooth comb is used to remove debris on the cleaning roller, and the scraper is arranged on the side of the track away from the filter plate, when the cleaning roller moves downward and passes the scraper, the cleaning roller contacts the scraper, and the scraper scrapes off the debris attached to the cleaning roller and stores it in the cotton collecting box.

[0012] Furthermore, two second chutes are distributed on the top surface of the cotton collecting box, a plurality of first notches are distributed between the two second chutes, and a third notch is also opened on the top surface of the cotton collecting box;

[0013] The cotton collecting box is also provided with a shielding component, which includes a shielding plate slidably arranged on the top surface of the cotton collecting box, the shielding plate corresponds to each of the first slots on the top of the cotton collecting box and one end of the shielding plate is arranged above the third slot, and both sides of the shielding plate are slidably arranged in the corresponding second slide grooves, and when the shielding plate slides, each of the second slide grooves is used to guide the sliding direction of the shielding plate, and a plurality of elastic units are evenly distributed between one end of the shielding plate and a side of the cotton collecting box away from the third slot, and a lifting component is vertically arranged below the third slot, and the lifting component is used to push the shielding plate in the direction of the elastic unit to cover the first slot.

[0014] Further, a first arc-shaped plate is provided at one end of the dust collecting duct close to the air outlet of the dust collecting cabinet, and an arc-shaped groove is provided on the first arc-shaped plate. When the telescopic end of the plug valve is extended, the telescopic end of the plug valve is inserted into the arc-shaped groove, and a second notch is also provided on the arc-shaped groove;

[0015] The lifting component includes a second arc-shaped plate vertically slidably inserted into the second slot, a first connecting rod is provided below the second arc-shaped plate, a tilting rod is provided on one side of the first connecting rod, a torsion spring is provided at the rotation center of the tilting rod, the torsion spring provides a torsion force for the end of the tilting rod close to the gate valve to rotate upward, and the end of the first connecting rod away from the second arc-shaped plate can slide on the tilting rod and rotate relative to the tilting rod, a second connecting rod is vertically provided on the side of the tilting rod away from the end of the first connecting rod, and the bottom end of the second connecting rod can slide on the tilting rod and rotate relative to the tilting rod, the second connecting rod is vertically slidably arranged in the cotton collecting box, the top end of the second connecting rod passes through the bottom end of the cotton collecting box and is provided with an abutment block, the abutment block is arranged below the third slot, when the telescopic end of the gate valve is extended, the second arc-shaped plate is pushed to move downward, the second arc-shaped plate drives the first connecting rod to move downward and moves the second connecting rod upward through the tilting rod, and the second connecting rod drives the abutment block to pass through the third slot and press the shielding plate in the direction of the elastic unit.

[0016] The beneficial effects of the utility model are embodied in:

[0017] The utility model, through the cooperation between the gate valve and the filter plate, enables the gate valve to prevent the filter cloth from being blown out of the pipeline without affecting the air pressure circulation in the pipeline, and does not require the staff to additionally clean the filter cloth, thereby reducing the labor intensity of the staff, and the cleaning component continuously cleans the filter plate to avoid the filter plate being blocked by the filter cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional view of the front side of the filter device for the dust collecting duct of the utility model;

[0019] Figure 2 It is a structural view of the cleaned components;

[0020] Figure 3 yes Figure 2 Magnified view at A in the middle;

[0021] Figure 4 It is a cross-sectional view of the filter device for the dust collecting duct of the utility model;

[0022] Figure 5 is a structural view of the first curved plate;

[0023] Figure 6 It is a structural view of the collection components;

[0024] Figure 7 It is a structural view of the moving rod.

[0025] Description of reference numerals:

[0026] 1. Dust cabinet; 11. Track; 12. First slide; 2. Gate valve; 21. Filter plate; 3. Cleaning component; 31. Moving rod; 32. Gear; 33. Cleaning roller; 34. Connecting frame; 35. Telescopic rod; 4. Collecting component; 41. Cotton collecting box; 411. Second slide; 412. First notch; 413. Third notch; 42. Scraper; 43. Shielding member; 431. Shielding plate; 432. Elastic unit; 5. First arc plate; 51. Arc groove; 52. Second notch; 6. Lifting component; 61. Second arc plate; 62. First connecting rod; 63. Crank rod; 64. Second connecting rod; 65. Abutment block; 7. Dust collecting duct. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other.

[0028] See also Figure 1-Figure 7 .

[0029] The utility model discloses a filtering device for a dust collecting pipeline, comprising:

[0030] The dust collecting cabinet 1 is arranged on the dust collecting duct 7 and is in communication with the dust collecting duct 7;

[0031] The gate valve 2 is installed on the dust collecting pipe 7 and the fixed end is vertically inserted into the top surface of the dust collecting cabinet 1. When the telescopic end of the gate valve 2 is extended, the telescopic end of the gate valve 2 is inserted into one end of the dust collecting pipe 7 close to the air outlet of the dust collecting cabinet 1 and blocks the dust collecting pipe 7. The part of the gate valve 2 corresponding to the dust collecting pipe 7 is a filter plate 21, which is used to prevent the debris in the dust collecting pipe 7 from passing through the filter plate 21 with wind pressure.

[0032] The cleaning component 3 is movably arranged in the dust collecting cabinet 1 at one side close to the gate valve 2, and the cleaning component 3 is in contact with the filter plate 21. The cleaning component 3 is used to clean the sundries (such as flowery clothes) attached to the filter plate 21.

[0033] In specific implementation, when the horizontal hydraulic baler is not working, the telescopic end of the gate valve 2 extends out and is inserted into one end of the dust collecting pipe 7 close to the air outlet of the dust collecting cabinet 1. The filter plate 21 on the gate valve 2 prevents the dust in the dust collecting pipe 7 from being blown out of the dust collecting cabinet 1. At this time, the wind pressure in the dust collecting pipe 7 can still flow smoothly through the filter plate 21. The cleaning component 3 moves back and forth in the dust collecting cabinet 1 and scrapes the filter plate 21, thereby cleaning the dust attached to the filter plate 21 to avoid the dust clogging the filter plate 21 after long-term work.

[0034] The utility model cooperates with the gate valve 2 and the filter plate 21, so that the gate valve 2 can prevent the flower clothes from being blown out of the pipeline without affecting the air pressure circulation in the pipeline, and there is no need for the staff to clean the flower clothes additionally, thereby reducing the labor intensity of the staff. The cleaning component 3 continuously cleans the filter plate 21 to avoid the filter plate 21 being blocked by the flower clothes.

[0035] In one embodiment, a track 11 is provided on each inner wall of both sides of the dust collecting cabinet 1, and the two tracks 11 are arranged opposite to each other. The track 11 is composed of two vertical sections and two "human" end parts spliced ​​in sequence, and teeth are provided on the vertical sections of the track 11. A first slide groove 12 corresponding to the track of the track 11 is also provided in the track 11;

[0036] The cleaning component 3 includes a moving rod 31 arranged in the dust collecting cabinet 1, and the two ends of the moving rod 31 are respectively slidably arranged in the first slide grooves 12 on the inner walls of the two sides of the dust collecting cabinet 1. The two ends of the moving rod 31 are respectively provided with gears 32, and the gears 32 are meshed with the teeth on the corresponding track 11. When the moving rod 31 moves in the vertical section of the track 11, each gear 32 is meshed with the teeth on the corresponding track 11 and drives the moving rod 31 to rotate about the axis of the moving rod 31. The moving rod 31 is also provided with a cleaning Roller 33, the cleaning surface of the cleaning roller 33 is in contact with the filter plate 21, and a connecting frame 34 is also provided on the movable rod 31, and a telescopic rod 35 is vertically provided below the connecting frame 34. The telescopic rod 35 is rotatably arranged in the dust collecting cabinet 1, and the telescopic end of the telescopic rod 35 is connected to the connecting frame 34. When the filter plate 21 needs to be cleaned, the cleaning roller 33 is driven to reciprocate along the setting direction of the track 11 by the telescopic rod 35 and the movable rod 31, so that the cleaning roller 33 scrapes the filter plate 21.

[0037] With this design, when too much flower clothes are attached to the filter plate 21, the telescopic end of the telescopic rod 35 rises and drives the two ends of the moving rod 31 to move in the vertical section of the corresponding first slide groove 12 through the connecting frame 34. The gears 32 at both ends of the moving rod 31 mesh with the teeth on the corresponding track 11 and drive the moving rod 31 to rotate, thereby driving the cleaning roller 33 to rotate and scratch the filter plate 21. When the two ends of the moving rod 31 enter the "human" end of the track 11, the moving rod 31 moves along the trajectory of the "human" end and drives the telescopic rod 35 to rotate. When the moving rod 31 rises to a predetermined maximum value, the telescopic end of the telescopic rod 35 contracts and drives the moving rod 31 to enter another vertical section of the track 11. As the moving rod 31 continues to descend and enters another "human" end of the track 11 until the moving rod 31 descends to a predetermined maximum value, the telescopic end of the telescopic rod 35 rises again and drives the moving rod 31 back to the vertical section of the track 11 close to one end of the filter plate 21, thereby completing a cleaning of the filter plate 21.

[0038] Preferably, the telescopic rod 35 can use an electric push rod in the prior art.

[0039] In one embodiment, the dust collector 1 is further provided with a collecting component 4, which includes a cotton collecting box 41 arranged at one end near the air inlet of the dust collector 1, and the feeding port of the cotton collecting box 41 is opened at one end of the cotton collecting box 41 near the gate valve 2. A scraper 42 is also opened at the feeding port of the cotton collecting box 41, and a tooth comb is arranged at one end of the scraper 42 corresponding to the cleaning roller 33, and the tooth comb is used to remove debris on the cleaning roller 33, and the scraper 42 is arranged on the side of the track 11 away from the filter plate 21. When the cleaning roller 33 moves downward and passes the scraper 42, the cleaning roller 33 contacts the scraper 42, and the scraper 42 scrapes off the debris attached to the cleaning roller 33 and stores it in the cotton collecting box 41.

[0040] With this design, when the cleaning roller 33 cleans the filter plate 21 and descends along the vertical section of the track 11 away from one end of the gate valve 2, the cleaning roller 33 rotates and contacts the scraper 42 through the mutual meshing between the gears 32 on both sides of the moving rod 31 and the corresponding teeth. The scraper 42 then abuts against the cleaning surface of the cleaning roller 33. As the cleaning roller 33 continues to rotate and move downward, the scraper 42 scrapes off the cotton attached to the cleaning roller 33, and the scraped cotton falls into the cotton collecting box 41.

[0041] In one embodiment, two second chutes 411 are distributed on the top surface of the cotton collecting box 41, a plurality of first notches 412 are distributed between the two second chutes 411, and a third notch 413 is also opened on the top surface of the cotton collecting box 41;

[0042] The cotton collecting box 41 is also provided with a shielding component 43, which includes a shielding plate 431 slidably set on the top surface of the cotton collecting box 41, the shielding plate 431 corresponds to each first slot 412 on the top of the cotton collecting box 41 and one end of the shielding plate 431 is set above the third slot 413, and the shielding plate 431 is slidably set in the corresponding second slide grooves 411 on both sides. When the shielding plate 431 slides, each second slide groove 411 is used to guide the sliding direction of the shielding plate 431, and a plurality of elastic units 432 are evenly distributed between one end of the shielding plate 431 and a side of the cotton collecting box 41 away from the third slot 413. A lifting component 6 is also vertically provided below the third slot 413, and the lifting component 6 is used to push the shielding plate 431 toward the elastic unit 432 to cover the first slot 412.

[0043] With such a design, when the cleaning component 3 is working, the lifting component 6 slides upward and passes through the third slot 413 to abut against the baffle plate 431. As the lifting component 6 continues to slide upward, the lifting component 6 presses the baffle plate 431 in the direction of the elastic unit 432. The elastic unit 432 is compressed, and the baffle plate 431 moves along the setting direction of the second slide groove 411 toward the end away from the elastic unit 432 and blocks the first slot 412 on the top surface of the cotton collecting box 41, thereby preventing the cotton in the cotton collecting box 41 from being blown out by the wind pressure in the dust collecting duct 7.

[0044] Preferably, the elastic unit 432 may use a spring in the prior art.

[0045] In one embodiment, the dust collecting duct 7 is provided with a first arc plate 5 at one end close to the air outlet of the dust collecting cabinet 1, and an arc groove 51 is provided on the first arc plate 5. When the telescopic end of the gate valve 2 is extended, the telescopic end of the gate valve 2 is inserted into the arc groove 51, and a second notch 52 is also provided on the arc groove 51.

[0046] The lifting component 6 includes a second curved plate 61 vertically slidably inserted into the second slot 52, a first connecting rod 62 is provided below the second curved plate 61, a tilting rod 63 is provided on one side of the first connecting rod 62, a torsion spring (not shown in the figure) is provided at the rotation center of the tilting rod 63, the torsion spring provides a torsion force for the tilting rod 63 to rotate upward at one end close to the gate valve 2, and the end of the first connecting rod 62 away from the second curved plate 61 can slide on the tilting rod 63 and rotate relative to the tilting rod 63, a second connecting rod 64 is vertically provided on one side of the tilting rod 63 away from one end of the first connecting rod 62, and the bottom of the second connecting rod 64 is provided with a torsion spring (not shown in the figure), and the torsion spring provides a torsion force for the tilting rod 63 to rotate upward at one end close to the gate valve 2, and the end of the first connecting rod 62 away from the second curved plate 61 can slide on the tilting rod 63 and rotate relative to the tilting rod 63, and the second connecting rod 64 is vertically provided on one side of the tilting rod 63 away from one end of the first connecting rod 62. The end can slide on the tilting rod 63 and rotate relative to the tilting rod 63. The second connecting rod 64 is vertically slidably set in the cotton collecting box 41. The top end of the second connecting rod 64 passes through the bottom end of the cotton collecting box 41 and is provided with abutment block 65. The abutment block 65 is set below the third slot 413. When the telescopic end of the gate valve 2 is extended, the second arc plate 61 is pushed to move downward. The second arc plate 61 drives the first connecting rod 62 to move downward and moves the second connecting rod 64 upward through the tilting rod 63. The second connecting rod 64 drives the abutment block 65 to pass through the third slot 413 and squeeze the baffle plate 431 in the direction of the elastic unit 432.

[0047] With this design, when the telescopic end of the gate valve 2 is extended, the telescopic end of the gate valve 2 is inserted into the arc groove 51 and presses the second arc plate 61 downward, and the second arc plate 61 drives the first connecting rod 62 to move downward and makes the second connecting rod 64 move upward in the cotton collecting box 41 through the tilting rod 63. At this time, the torsion spring accumulates force, and the second connecting rod 64 drives the abutment block 65 to pass through the third notch 413 and abut against the baffle plate 431. As the second connecting rod 64 continues to move upward, the abutment block 65 presses the baffle plate 431 in the direction of the elastic unit 432, so that the baffle plate 431 The notch on the top of the cotton collecting box 41 is covered. At this time, the elastic unit 432 is compressed. When the telescopic end of the gate valve 2 contracts, the second arc plate 61 loses its constraint, and the torsion spring is reset and drives the first connecting rod 62 to rotate upward through the tilting rod 63. At this time, the second connecting rod 64 descends, and the abutment block 65 no longer abuts the baffle plate 431. The elastic unit 432 is reset and drives the baffle plate 431 to move away from the elastic unit 432. At this time, the baffle plate 431 no longer covers the notch on the cotton collecting box 41, and the cotton clothes in the cotton collecting box 41 are blown out of the pipe by the wind pressure in the pipe.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. In addition, "multiple", "multiple groups", and "several" refer to more than two.

Claims

1. A filter device for a dust collecting pipe, characterized in that: include: A dust collecting cabinet (1) is arranged on the dust collecting duct (7) and is in communication with the dust collecting duct (7); A gate valve (2) is installed on the dust collecting pipe (7) and a fixed end is vertically inserted into the top surface of the dust collecting cabinet (1); when the telescopic end of the gate valve (2) is extended, the telescopic end of the gate valve (2) is inserted into one end of the dust collecting pipe (7) close to the air outlet of the dust collecting cabinet (1) and blocks the dust collecting pipe (7); the portion of the gate valve (2) corresponding to the dust collecting pipe (7) is a filter plate (21); the filter plate (21) is used to prevent debris in the dust collecting pipe (7) from passing through the filter plate (21) due to wind pressure; A cleaning component (3) is movably arranged in the dust collecting cabinet (1) on one side close to the plug valve (2), and the cleaning component (3) is in contact with the filter plate (21). The cleaning component (3) is used to clean debris attached to the filter plate (21).

2. The filter device for the dust collecting duct according to claim 1, characterized in that: A track (11) is provided on each of the inner walls on both sides of the dust collecting cabinet (1), and the two tracks (11) are arranged opposite to each other, the track (11) is composed of two vertical sections and two "human" end parts spliced ​​in sequence, and teeth are provided on the vertical sections of the track (11), and a first slide groove (12) corresponding to the track of the track (11) is also provided in the track (11); The cleaning component (3) comprises a moving rod (31) arranged in the dust collecting cabinet (1), and the two ends of the moving rod (31) are respectively slidably arranged in the first sliding groove (12) on the inner walls of the two sides of the dust collecting cabinet (1), and the two ends of the moving rod (31) are respectively provided with a gear (32), and the gear (32) is meshed with the teeth on the corresponding track (11). When the moving rod (31) moves in the vertical section of the track (11), each gear (32) is meshed with the teeth on the corresponding track (11) and drives the moving rod (31) to rotate about the axis of the moving rod (31), and the moving rod (31) is also provided with a cleaning gear. A roller (33), the cleaning surface of the cleaning roller (33) is in contact with the filter plate (21), a connecting frame (34) is further provided on the movable rod (31), a telescopic rod (35) is vertically provided below the connecting frame (34), the telescopic rod (35) is rotatably arranged in the dust collecting cabinet (1), and the telescopic end of the telescopic rod (35) is connected to the connecting frame (34), when it is necessary to clean the filter plate (21), the telescopic rod (35) is vertically reciprocated and the movable rod (31) drives the cleaning roller (33) to reciprocate along the setting direction of the track (11), so that the cleaning roller (33) scrapes the filter plate (21).

3. The filter device for the dust collecting duct according to claim 2, characterized in that: The dust collecting cabinet (1) is also provided with a collecting component (4), and the collecting component (4) includes a cotton collecting box (41) arranged at one end near the air inlet of the dust collecting cabinet (1), and the feeding port of the cotton collecting box (41) is opened at one end of the cotton collecting box (41) near the plug valve (2), and the cotton collecting box (41) is also provided with a scraper (42) at the feeding port, and the scraper (42) is provided with a tooth comb at one end corresponding to the cleaning roller (33), and the tooth comb is used to remove debris on the cleaning roller (33), and the scraper (42) is arranged on a side of the track (11) away from the filter plate (21), when the cleaning roller (33) moves downward and passes through the scraper (42), the cleaning roller (33) contacts the scraper (42), and the scraper (42) scrapes off the debris attached to the cleaning roller (33) and stores it in the cotton collecting box (41).

4. The filter device for the dust collecting duct according to claim 3, characterized in that: Two second chutes (411) are distributed on the top surface of the cotton collecting box (41), a plurality of first notches (412) are distributed between the two second chutes (411), and a third notch (413) is also opened on the top surface of the cotton collecting box (41); The cotton collecting box (41) is also provided with a shielding component (43), and the shielding component (43) includes a shielding plate (431) slidably arranged on the top surface of the cotton collecting box (41), and the shielding plate (431) corresponds to each of the first slots (412) on the top of the cotton collecting box (41) and one end of the shielding plate (431) is arranged above the third slot (413), and both sides of the shielding plate (431) are slidably arranged in the corresponding second slide grooves (411), and when the shielding plate (431) slides, each The second slide groove (411) is used to guide the sliding direction of the baffle plate (431), and a plurality of elastic units (432) are evenly distributed between one end of the baffle plate (431) and the side of the cotton collecting box (41) away from the third slot (413). A lifting component (6) is also vertically provided below the third slot (413), and the lifting component (6) is used to push the baffle plate (431) toward the elastic unit (432) to cover the first slot (412).

5. The filter device for the dust collecting duct according to claim 4, characterized in that: The dust collecting pipe (7) is provided with a first arc plate (5) at one end close to the air outlet of the dust collecting cabinet (1), and the first arc plate (5) is provided with an arc groove (51). When the telescopic end of the gate valve (2) is extended, the telescopic end of the gate valve (2) is inserted into the arc groove (51), and the arc groove (51) is also provided with a second notch (52); The lifting component (6) comprises a second arc-shaped plate (61) vertically slidably inserted into the second slot (52); a first connecting rod (62) is provided below the second arc-shaped plate (61); a tilting rod (63) is provided on one side of the first connecting rod (62); a torsion spring is provided at the rotation center of the tilting rod (63); the torsion spring provides a torsion force for the tilting rod (63) to rotate upward at one end thereof close to the gate valve (2); and an end of the first connecting rod (62) away from the second arc-shaped plate (61) can slide on the tilting rod (63) and rotate relative to the tilting rod (63); a second connecting rod (64) is vertically provided on one side of the tilting rod (63) away from one end of the first connecting rod (62); and the bottom end of the second connecting rod (64) can slide on the tilting rod (63) The second connecting rod (64) is vertically slidably arranged in the cotton collecting box (41), and the top end of the second connecting rod (64) passes through the bottom end of the cotton collecting box (41) and is provided with a contact block (65). The contact block (65) is arranged below the third slot (413). When the telescopic end of the plug valve (2) is extended, the second arc plate (61) is pushed to move downward. The second arc plate (61) drives the first connecting rod (62) to move downward and moves the second connecting rod (64) upward through the tilting rod (63). The second connecting rod (64) drives the contact block (65) to pass through the third slot (413) and squeeze the shielding plate (431) in the direction of the elastic unit (432).

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