Air purification device for extruder

Abstract

The present invention discloses an air purification device for an extruder, comprising a housing, an air intake chamber and a gas processing chamber within the housing, a die head extending into the air intake chamber, and profiles extruded from the die head being pulled out of the air intake chamber for external collection; the gas processing chamber being divided into a suction chamber and a filter chamber; an exhaust fan being provided in the suction chamber, and a filter mechanism being provided in the filter chamber; the exhaust fan sucking gas from the suction chamber into the suction chamber and transporting it from an air supply port to the filter chamber for filtration by the filter mechanism. The present invention uses the exhaust fan to transport gas from the suction chamber to the filter chamber for filtration, thereby reducing harmful gas emissions; at the same time, the sucked air exchanges heat with the profile to remove heat from the extruded profile, thereby cooling the extruded profile.

Description

Technical Field

[0001] The present invention relates to the technical field of air treatment, and in particular to an air purification device for an extruder. Background Art

[0002] Extrusion is a common processing method in modern industrial production, but the extrusion process produces a large amount of waste gas, which has an impact on the environment. Extruder exhaust refers to the waste gases produced by the extruder during the production process, including various harmful gases, odors, and smoke. Harmful substances in extruder exhaust can harm the environment. For example, odors and smoke can pollute the air, and some harmful substances can also pose health risks. To protect the environment and reduce pollution, extruder exhaust gas treatment is essential.

[0003] When the extruder is in use, its extrusion end is an open structure, and its exhaust gas will drift into the workshop. The existing treatment method is to set a gas collection mechanism above the workshop to extract the gas for centralized treatment. For example, Chinese patent application number CN202121888119.9 discloses a two-stage extruder unit with a gas treatment mechanism, which collects the workshop gas into a box and filters it to prevent harmful gases from being directly discharged into the air and polluting the environment. However, this device can only treat the exhaust gas, and it cannot collect and purify the air discharged from the extruder in time. The exhaust gas overflowing from the extrusion end of the extruder will drift in the workshop, causing harm to the workshop personnel, and cannot meet the timely treatment requirements. Summary of the Invention

[0004] The purpose of the present invention is to solve the above technical problems and provide an air purification device for an extruder.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The exhaust gas fan of the present invention has a circle which is connected with the air filter of the exhaust gas fan, and the exhaust gas fan of the exhaust gas fan is connected with the air filter of the exhaust gas fan.

[0007] Furthermore, the exhaust fan includes a driving motor and fan blades fixedly connected to the output shaft of the driving motor; the filtering mechanism includes a filter cartridge rotatably arranged on the side wall of the filter chamber, a filter mesh is arranged on the outer circumference of the filter cartridge, and the filter cartridge is filled with activated carbon particles. The output shaft of the driving motor is transmission-connected to the filter cartridge to drive the filter cartridge to rotate while sucking air.

[0008] Furthermore, a first rotating shaft is fixedly connected to the output shaft of the driving motor, a first bevel gear is fixedly connected to the first rotating shaft, a second rotating shaft is rotatably connected to the vertical partition, a second bevel gear is fixedly connected to the second rotating shaft, the first bevel gear and the second bevel gear are engaged through gears to form a bevel gear transmission, the second rotating shaft is located at the center position of the filter drum and cooperates with the filter drum transmission to drive the filter drum to rotate.

[0009] Furthermore, a third rotating shaft is fixedly connected in the middle of the filter cartridge, a mounting groove is provided at the end of the third rotating shaft, a slide groove arranged axially along the third rotating shaft is provided on the inner wall of the mounting groove, the second rotating shaft is inserted into the mounting groove at one end away from the second bevel gear, a transmission column is fixedly connected to the second rotating shaft, the transmission column is located in the slide groove and slidably cooperates with the slide groove along the axial direction; a mounting hole is provided on the cover shell, and a sealing plate is rotatably connected to the end of the filter cartridge away from the second rotating shaft, the sealing plate is detachably connected to the cover shell and covers the mounting hole, and the end of the filter cartridge extends into the mounting hole and fits in contact with the inner wall of the mounting hole for sealing and sliding cooperation.

[0010] Furthermore, two combined plates are fixedly connected to the inner wall of the filter chamber, and each combined plate is provided with two pieces. The two combined plates are arranged on both sides of the filter cartridge, and the combined plates in each combined plate are symmetrically arranged along the center of the filter cartridge, and the edges of the combined plates extend to the filter screen attached to the outer wall of the filter cartridge; a cleaning plate is provided between each combined plate, and the cleaning plate is fixed to the inner wall of the filter chamber. A cleaning brush is provided at one end of the cleaning plate close to the filter cartridge, and the cleaning brush abuts against the outer surface of the filter screen.

[0011] Furthermore, an exhaust port is provided on the side wall of the filter cavity. The exhaust port is located on the side of the filter mechanism away from the air supply port. The exhaust port is used to discharge the processed gas in the filter cavity out of the filter cavity.

[0012] Furthermore, the cover shell includes a front plate fixed on the machine head, side panels surrounded by the front plate, and a fixed end plate and a movable end plate arranged at one end of the side panel away from the front plate, the front plate is fixedly connected to the side panel, the fixed end plate is fixedly connected to the end of the side panel, the movable end plate is hinged to the upper side panel, an inspection port is provided between the fixed end plate and the upper side panel, a movable plate is provided on the fixed end plate, a first avoidance gap is opened on the movable plate, the movable end plate covers the inspection port and a second avoidance gap is opened at the lower end of the movable end plate, the first avoidance gap and the second avoidance gap enclose a through hole so that the extruded profile passes through the through hole.

[0013] Furthermore, an inspection groove is provided on the fixed end plate, and the size of the inspection groove is larger than the first avoidance gap; the patch plate slides with the fixed end plate and covers one side of the inspection groove, the upper end of the patch plate is fixedly connected to a connecting rod, and the movable end plate is fixedly connected to a driving rod, and the upper end of the connecting rod is transmission-connected to the driving rod. When the movable end plate flips upward, the driving rod drives the connecting rod to move downward, causing the movable patch plate to move downward.

[0014] Furthermore, the upper end of the connecting rod is hingedly connected to a first rocker arm, the upper end of the first rocker arm is rotatably connected to a hinge shaft, the end of the driving rod away from the movable end plate is hingedly connected to a second rocker arm, the end of the second rocker arm away from the driving rod is rotatably connected to the hinge shaft, a fixed plate is fixedly connected to the inner wall of the side panel, a transversely arranged long groove is provided on the fixed plate, the hinge shaft extends into the long groove and slidably cooperates with the long groove to slide back and forth along the long groove.

[0015] Furthermore, a tension spring is provided on the outer side of the side panel, one end of the tension spring is fixed to the top of the side panel, and the other end of the tension spring is fixed to the side of the movable end plate.

[0016] The present invention provides an air purification device for an extruder, which has the following beneficial effects:

[0017] 1. The present invention uses an exhaust fan to transport the gas in the suction chamber to the filter chamber for filtration. The suction process forms a negative pressure in the suction chamber, and the material extruded by the extruder head is pulled out of the suction chamber. The exhaust gas overflowing from the profile extruded from the head is sucked into the filter chamber for treatment, thereby reducing the emission of harmful gases; at the same time, a negative pressure is formed in the suction chamber, and external air enters the suction chamber to bring the exhaust gas into the filter chamber. At the same time, the sucked air exchanges heat with the profile to take away the heat of the extruded profile, thereby cooling the extruded profile and preventing the extruded profile from being deformed by the high temperature in the subsequent collection mechanism; at the same time, the exhaust gas overflowing from the profile extruded from the head is collected through the suction chamber and transported to the filter chamber for filtration, thereby preventing the exhaust gas from drifting into the surrounding environment, thereby preventing the operator from inhaling harmful gases;

[0018] 2. During the process of gas purification by the filtration mechanism, the driving motor drives the filter cartridge to rotate, so that the filter and the activated carbon particles rotate and contact with the incoming gas, thereby evenly purifying the air and avoiding long-term filtration and clogging of the same part of the filter. The activated carbon particles are in uniform contact with the air in the rotating state to absorb harmful substances, avoiding uneven absorption of harmful substances by the activated carbon particles in the filter cartridge, resulting in asynchronous failure of the activated carbon particles and affecting the adsorption of harmful substances;

[0019] 3. In the present invention, when the movable end plate is opened, the movable end plate flips upward and opens, and at the same time, the plate moves downward so that the first avoidance gap is away from the position where the profile passes, so that the maintenance groove on the fixed end plate remains open. By opening the larger maintenance groove, it is convenient to pull the extruded profile opened by the head, thereby expanding the maintenance operation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0021] Figure 1 A schematic cross-sectional view of an air purification device for an extruder provided by the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of the local structure of part A in the middle;

[0023] Figure 3 This is a schematic structural diagram of an air purification device for an extruder provided by the present invention;

[0024] Figure 4 A schematic diagram of the structure of an air purification device for an extruder provided by the present invention in combination with an extruder;

[0025] Figure 5 A schematic diagram of the left side cross-sectional structure of an air purification device for an extruder provided by the present invention;

[0026] Figure 6 for Figure 5 Schematic diagram of the local structure of part B in the middle;

[0027] Figure 7 for Figure 6 Schematic diagram of the local structure of the middle C part;

[0028] Figure 8 for Figure 7 Schematic diagram of the cross-sectional matching structure of the second rotating shaft and the third rotating shaft;

[0029] Figure 9 This is a left-side structural schematic diagram of an air purification device for an extruder provided by the present invention;

[0030] Figure 10 A schematic cross-sectional view of an air purification device for an extruder provided by the present invention with a movable end plate in an open state;

[0031] Figure 11 This is a left-side structural schematic diagram of an air purification device for an extruder provided by the present invention, with the movable end plate in an open state.

[0032] Explanation of the reference numerals in the figure: 1. housing; 11. partition plate; 111. air inlet; 12. vertical partition plate; 121. air delivery port; 13. second rotating shaft; 131. transmission column; 14. second bevel gear; 15. mounting hole; 16. front plate; 17. side panel; 18. fixed end plate; 181. inspection groove; 19. movable end plate; 191. second avoidance gap; 192. driving rod; 193. second swing arm; 110. inspection port; 2. suction chamber; 3. gas treatment chamber; 31. suction chamber; 32. filter chamber; 33. closing Plate; 34. Cleaning plate; 35. Cleaning brush; 36. Exhaust port; 4. Exhaust fan; 41. Drive motor; 42. Fan blades; 43. First bevel gear; 5. Filter mechanism; 51. Filter cartridge; 52. Filter screen; 53. Activated carbon granules; 54. Third rotating shaft; 541. Mounting slot; 542. Slide slot; 55. Closing plate; 6. Movable plate; 61. First avoidance gap; 62. Connecting rod; 63. First rocker arm; 64. Articulated shaft; 7. Fixed plate; 71. Long strip groove; 8. Tension spring; 9. Extruder; 91. Head. DETAILED DESCRIPTION

[0033] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0036] like Figures 1-11As shown, an air purification device for an extruder includes a cover 1 installed on the head 91 of the extruder 9, a partition plate 11 is provided in the cover 1, the partition plate 11 is located below the head 91 and divides the internal chamber of the cover 1 into an air intake chamber 2 and a gas processing chamber 3, the head 91 extends into the air intake chamber 2 and the profile extruded from the head 91 is pulled out of the air intake chamber 2 to be collected outside; a vertical partition plate 12 is fixedly connected to the gas processing chamber 3, the vertical partition plate 12 divides the gas processing chamber 3 into a suction chamber 31 and a filter chamber 32, and the specific partition plate 11 is symmetrically provided with two pieces, so that The filter chamber 32 is distributed on both sides of the suction chamber 31; the partition plate 11 is provided with an air inlet 111 for allowing the gas in the suction chamber 2 to enter the suction chamber 31; an exhaust fan 4 is provided in the suction chamber 31, and an air supply port 121 is provided on the vertical partition 12, and the air supply port 121 is located on the side of the exhaust fan 4 away from the air inlet 111. The air supply port 121 connects the filter chamber 32 with the suction chamber 31, and a filtering mechanism 5 is provided in the filter chamber 32. The exhaust fan 4 sucks the gas in the suction chamber 2 into the suction chamber 31 and transports it from the air supply port 121 to the filter chamber 32 for filtration through the filtering mechanism 5.

[0037] By adopting the above technical solution, the gas in the suction chamber 2 is transported to the filter chamber 32 for filtration through the exhaust fan 4. The suction process forms a negative pressure in the suction chamber 2, and the material extruded by the head 91 on the extruder 9 is pulled out of the suction chamber 2. The exhaust gas overflowing from the profile extruded from the head 91 is sucked into the filter chamber 32 for treatment, thereby reducing the emission of harmful gases; at the same time, a negative pressure is formed in the suction chamber 2, and the external air enters the suction chamber 2 and brings the exhaust gas into the filter chamber 32. At the same time, the sucked air exchanges heat with the profile to take away the heat of the extruded profile, thereby cooling the extruded profile and preventing the extruded profile from being deformed by the high temperature in the subsequent collection mechanism; at the same time, the exhaust gas overflowing from the profile extruded by the head 91 is collected through the suction chamber 2 and transported to the filter chamber 32 for filtration, thereby preventing the exhaust gas from drifting into the surrounding environment, thereby preventing the operator from inhaling harmful gases.

[0038] Specifically, the exhaust fan 4 includes a driving motor 41 and a fan blade 42 fixedly connected to the output shaft of the driving motor 41; the filtering mechanism 5 includes a filter cartridge 51 rotatably arranged on the side wall of the filter chamber 32, and a filter mesh 52 is arranged on the outer circumference of the filter cartridge 51. The filter cartridge 51 is filled with activated carbon particles 53. The output shaft of the driving motor 41 is transmission-connected to the filter cartridge 51 to drive the filter cartridge 51 to rotate while sucking air. During the rotation, the driving motor 41 drives the fan blades 42 to rotate. The rotation of the fan blades 42 draws the gas in the suction chamber 2 into the suction chamber 31 and pressurizes it to the filter chamber 32 for filtration and purification. The filter mesh 52 on the outside of the filter cartridge 51 filters the gas entering the filter chamber 32, and the activated carbon particles 53 in the filter cartridge 51 adsorb and purify the harmful substances in the gas, thereby purifying the exhaust gas discharged from the extruder; in the process of the filtering mechanism 5 purifying the gas, the driving motor 41 drives the filter cartridge 51 to rotate, so that the filter mesh 52 and the activated carbon particles 53 rotate and contact with the incoming gas, thereby evenly purifying the air and avoiding long-term filtration and clogging of the same part of the filter mesh 52. The activated carbon particles 53 are evenly in contact with the air in the rotating state to adsorb harmful substances, avoiding uneven adsorption of harmful substances by the activated carbon particles 53 in the filter cartridge 51, resulting in the failure of the activated carbon particles 53 and the asynchronous impact on the adsorption of harmful substances.

[0039] Specifically, a first rotating shaft is fixedly connected to the output shaft of the driving motor 41, a first bevel gear 43 is fixedly connected to the first rotating shaft, a second rotating shaft 13 is rotatably connected to the vertical partition 12, a second bevel gear 14 is fixedly connected to the second rotating shaft 13, the first bevel gear 43 and the second bevel gear 14 are engaged with each other through gears to form a bevel gear transmission, the second rotating shaft 13 is located at the center position of the filter cartridge 51 and cooperates with the filter cartridge 51 to drive the filter cartridge 51 to rotate.

[0040] Specifically, a third rotating shaft 54 ​​is fixedly connected in the middle of the filter cartridge 51, and a mounting groove 541 is provided at the end of the third rotating shaft 54. A sliding groove 542 arranged axially along the third rotating shaft 54 ​​is provided on the inner wall of the mounting groove 541. The end of the second rotating shaft 13 away from the second bevel gear 14 is inserted into the mounting groove 541, and a transmission column 131 is fixedly connected to the second rotating shaft 13. The transmission column 131 is located in the sliding groove 542 and slides axially with the sliding groove 542; a mounting hole 15 is provided on the cover shell 1, and a sealing plate 55 is rotatably connected to the end of the filter cartridge 51 away from the second rotating shaft 13. The sealing plate 55 is detachably connected to the cover shell 1 and covers the mounting hole 15. The end of the filter cartridge 51 extends into the mounting hole 15 and fits in the inner wall of the mounting hole 15 for sealing and sliding cooperation. After removing the sealing plate 55, the filter cartridge 51 can be pulled out to replace the filter screen 52 and the activated carbon particles 53; after replacement, the filter cartridge 51 is pressed from the mounting hole 15 into the filter chamber 32, and the mounting groove 541 of the third rotating shaft 54 ​​is sleeved on the end of the second rotating shaft 13, and the transmission column 131 is snapped into the slide groove 542, so that the second rotating shaft 13 and the third rotating shaft 54 ​​rotate synchronously, and the sealing plate 55 is installed on the side wall of the cover shell 1.

[0041] Specifically, two combined plates 33 are fixedly connected to the inner wall of the filter chamber 32, and each combined plate 33 is provided with two pieces. The two combined plates 33 are arranged on both sides of the filter cartridge 51, and the combined plates 33 in each combined plate 33 are arranged symmetrically along the center of the filter cartridge 51. The edges of the combined plates 33 extend to the filter screen 52 attached to the outer wall of the filter cartridge 51; a cleaning plate 34 is provided between each combined plate 33, and the cleaning plate 34 is fixed to the inner wall of the filter chamber 32. A cleaning brush 35 is provided at one end of the cleaning plate 34 close to the filter cartridge 51, and the cleaning brush 35 abuts against the outer surface of the filter screen 52. During the rotation of the filter cartridge 51, the cleaning brush 35 cleans the surface of the filter screen 52 on the filter cartridge 51 to prevent the filter screen 52 from being blocked; and the provision of the plywood 33 can prevent the air in the filter chamber 32 from flowing out from the gap between the outside of the filter cartridge 51 and the inner wall of the filter chamber 32, while isolating the cleaned dust between each combination plate 33, thereby preventing the cleaned dust from overflowing. When the filter cartridge 51 is taken out and replaced, the dust in the area between the plywood 33 can be cleaned.

[0042] Specifically, an exhaust port 36 is opened on the side wall of the filter cavity 32 . The exhaust port 36 is located on the side of the filter mechanism 5 away from the air supply port 121 . The exhaust port 36 is used to discharge the processed gas in the filter cavity 32 out of the filter cavity 32 .

[0043] Specifically, the cover shell 1 includes a front plate 16 fixed on the machine head 91, a side panel 17 surrounded by the front panel 16, and a fixed end panel 18 and a movable end panel 19 arranged at one end of the side panel 17 away from the front panel 16. The front panel 16 is fixedly connected to the side panel 17, the fixed end panel is fixedly connected to the end of the side panel 17, the movable end panel 19 is hinged to the upper side panel 17, and an inspection port 110 is arranged between the fixed end panel 18 and the upper side panel 17. A movable plate 6 is provided on the fixed end panel 18, and a first avoidance gap 61 is opened on the movable plate 6. The movable end panel 6 covers the inspection port 110 and a second avoidance gap 191 is opened at the lower end of the movable end panel 19. The first avoidance gap 61 and the second avoidance gap 191 enclose a through hole so that the extruded profile passes through the through hole. During the specific setting, a small gap, such as 2mm-3mm, is set between the through hole and the outer wall of the profile, so that the profile can pass through the through hole, and the external air can enter the suction chamber 2 from the gap between the through hole and the profile. The external air can form a faster flow rate through the narrow gap to take away the heat on the surface of the profile, and the flowing air will take the overflowed harmful gas into the suction chamber 31 and prevent the harmful gas from overflowing.

[0044] Specifically, an inspection groove 181 is provided on the fixed end plate 18, and the inspection groove 181 is larger than the first avoidance gap 61; the adhesive plate slides with the fixed end plate 18 and covers one side of the inspection groove 181, and the upper end of the adhesive plate is fixedly connected to a connecting rod 62, and the movable end plate 19 is fixedly connected to a driving rod 192, and the upper end of the connecting rod 62 is transmission-connected to the driving rod 192. When the movable end plate 19 flips upward, the driving rod 192 drives the connecting rod 62 to move downward, so that the movable adhesive plate 6 moves downward. When inspecting or starting the machine, the movable end plate 19 is opened, the movable end plate 19 is flipped upward and opened, and the plate is moved downward so that the first avoidance gap 61 is away from the position where the profile passes, so that the inspection groove 181 on the fixed end plate 18 remains open. By opening the larger inspection groove 181, it is convenient to pull the extruded profile opened by the machine head 91, thereby expanding the inspection operation space and avoiding the newly extruded profile from shaking and colliding with the movable plate 6 or the fixed end plate 18; when the movable end plate 19 is closed, the movable plate 6 is driven to move upward so that the movable plate 6 covers the inspection groove 181 to avoid the opening size being too large. The movable plate 6 moves upward so that the first avoidance gap 61 and the second avoidance gap 191 are merged into a smaller through hole to avoid the overflow of harmful gases, which is beneficial to the formation of negative pressure in the suction chamber 2, thereby facilitating the gas to enter the suction chamber 2 to cool the profile and draw the harmful gas into the suction chamber 31.

[0045] Specifically, the upper end of the connecting rod 62 is hingedly connected to the first rocker arm 63, and the upper end of the first rocker arm 63 is rotatably connected to the hinge shaft 64. The end of the driving rod 192 away from the movable end plate 19 is hingedly connected to the second rocker arm 193, and the end of the second rocker arm 193 away from the driving rod 192 is rotatably connected to the hinge shaft 64. A fixed plate 7 is fixedly connected to the inner wall of the side panel 17, and a transversely arranged long groove 71 is opened on the fixed plate 7. The hinge shaft 64 extends into the long groove 71 and slides with the long groove 71 to slide back and forth along the long groove 71. When the movable end plate 19 flips outward, it drives the driving rod 192 to flip outward, and drives the hinge shaft 64 to move outward along the long groove 71 through the second rocker arm 193, thereby driving the first rocker arm 63 to swing and then press the connecting rod 62 downward, so that the movable plate 6 moves downward; thereby, when the movable end plate 19 flips, the connecting rod 62 is synchronously driven to move downward to synchronously drive the movable plate 6 to move downward, and when the movable end plate 19 is closed, the connecting rod 62 is synchronously driven to move upward to drive the movable plate 6 to move upward.

[0046] Specifically, a tension spring 8 is provided on the outside of the side panel 17, one end of which is fixed to the top of the side panel 17, and the other end of which is fixed to the side of the movable end panel 19. The elastic tension of the tension spring 8 keeps the movable end panel 19 in contact with the end surface of the side panel 17 when closed. When the movable end panel 19 is flipped open, the tension spring 8 is located above the hinge point between the movable end panel 19 and the side panel 17, so that the tension spring 8 is stretched, and the tension of the tension spring 8 keeps the movable end panel 19 stably open.

[0047] The parts not involved in this technical solution can be implemented using existing technologies.

[0048] The basic principles, main features, and characteristics of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention includes the appended claims and their equivalents.

Claims

1. An air purification device for an extruder, characterized in that: The invention comprises a housing (1), wherein the housing (1) is used to be installed on a head (91) of an extruder, wherein a partition plate (11) is provided in the housing (1), wherein the partition plate (11) is located below the head (91) and divides the internal chamber of the housing (1) into an air suction chamber (2) and a gas processing chamber (3), wherein the head (91) extends into the air suction chamber (2) and the profile extruded from the head (91) is pulled out of the air suction chamber (2) and collected outside; wherein a vertical partition plate (12) is fixedly connected to the gas processing chamber (3), wherein the vertical partition plate (12) divides the gas processing chamber (3) into a suction chamber (31) and a filter chamber (32), wherein the partition plate (11) An air inlet (111) is provided on the upper portion for allowing the gas in the suction chamber (2) to enter the extraction chamber (31); an exhaust fan (4) is provided in the extraction chamber (31); an air supply port (121) is provided on the vertical partition (12), and the air supply port (121) is located on the side of the exhaust fan (4) away from the air inlet (111); the air supply port (121) connects the filter chamber (32) with the suction chamber (31); a filter mechanism (5) is provided in the filter chamber (32); the exhaust fan (4) sucks the gas in the suction chamber (2) into the suction chamber (31) and transports the gas from the air supply port (121) to the filter chamber (32) for filtration through the filter mechanism (5); The exhaust fan (4) includes a drive motor (41) and a fan blade (42) fixedly connected to the output shaft of the drive motor (41); the filter mechanism (5) includes a filter cartridge (51) rotatably arranged on the side wall of the filter chamber (32); a filter screen (52) is arranged on the outer periphery of the filter cartridge (51); the filter cartridge (51) is filled with activated carbon particles (53); the output shaft of the drive motor (41) is in transmission connection with the filter cartridge (51) so as to drive the filter cartridge (51) to rotate while sucking air; Two combined plates (33) are fixedly connected to the inner wall of the filter chamber (32), and each combined plate (33) is provided with two pieces. The two combined plates (33) are provided on both sides of the filter cylinder (51), and the combined plates (33) in each combined plate (33) are symmetrically arranged along the center of the filter cylinder (51). The edges of the combined plates (33) extend to the filter screen (52) attached to the outer wall of the filter cylinder (51); a cleaning plate (34) is provided between each combined plate (33), and the cleaning plate (34) is fixed on the inner wall of the filter chamber (32). A cleaning brush (35) is provided at one end of the cleaning plate (34) close to the filter cylinder (51), and the cleaning brush (35) abuts against the outer surface of the filter screen (52); The cover (1) comprises a front plate (16) fixed on the machine head (91), a side panel (17) enclosed around the front plate (16), and a fixed end plate (18) and a movable end plate (19) arranged at one end of the side panel (17) away from the front plate (16), wherein the front plate (16) is fixedly connected to the side panel (17), the fixed end plate (18) is fixedly connected to the end of the side panel (17), the movable end plate (19) is hinged to the upper side panel (17), and the fixed end plate ( An inspection opening (110) is provided between the fixed end plate (18) and the upper side panel (17); a movable plate (6) is provided on the fixed end plate (18); a first avoidance notch (61) is provided on the movable plate (6); the movable end plate (19) covers the inspection opening (110) and a second avoidance notch (191) is provided at the lower end of the movable end plate (19); the first avoidance notch (61) and the second avoidance notch (191) enclose a through hole so that the extruded profile passes through the through hole; The fixed end plate (18) is provided with an inspection groove (181), and the size of the inspection groove (181) is larger than the first avoidance gap (61); the plate is slidably matched with the fixed end plate (18) and covers one side of the inspection groove (181); the upper end of the plate is fixedly connected to a connecting rod (62); the movable end plate (19) is fixedly connected to a driving rod (192); the upper end of the connecting rod (62) is transmission-connected to the driving rod (192); when the movable end plate (19) flips upward, the driving rod (192) drives the connecting rod (62) to move downward, so that the movable plate (6) moves downward.

2. The air purification device for an extruder according to claim 1, characterized in that: A first rotating shaft is fixedly connected to the output shaft of the driving motor (41), a first bevel gear (43) is fixedly connected to the first rotating shaft, a second rotating shaft (13) is rotatably connected to the vertical partition (12), a second bevel gear (14) is fixedly connected to the second rotating shaft (13), the first bevel gear (43) and the second bevel gear (14) are meshed with each other to form a bevel gear transmission, the second rotating shaft (13) is located at the center of the filter drum (51) and is in transmission cooperation with the filter drum (51) to drive the filter drum (51) to rotate.

3. The air purification device for an extruder according to claim 2, characterized in that: The filter cartridge (51) is fixedly connected to a third rotating shaft (54) in the middle, an installation groove (541) is provided at the end of the third rotating shaft (54), and a sliding groove (542) arranged along the axial direction of the third rotating shaft (54) is provided on the inner wall of the installation groove (541), and the end of the second rotating shaft (13) away from the second bevel gear (14) is inserted into the installation groove (541), and a transmission column (131) is fixedly connected to the second rotating shaft (13), and the transmission column (131) is fixedly connected to the filter cartridge (51 ...). 31) is located in the slide groove (542) and slides in axial engagement with the slide groove (542); a mounting hole (15) is provided on the housing (1); one end of the filter cartridge (51) away from the second rotating shaft (13) is rotatably connected to a sealing plate (55); the sealing plate (55) is detachably connected to the housing (1) and covers the mounting hole (15); an end of the filter cartridge (51) extends into the mounting hole (15) and fits in a sealed sliding engagement with the inner wall of the mounting hole (15).

4. The air purification device for an extruder according to claim 1, characterized in that: An exhaust port (36) is provided on the side wall of the filter cavity (32). The exhaust port (36) is located on the side of the filter mechanism (5) away from the air supply port (121). The exhaust port (36) is used to discharge the treated gas in the filter cavity (32) out of the filter cavity (32).

5. The air purification device for an extruder according to claim 1, characterized in that: The upper end of the connecting rod (62) is hingedly connected to a first rocking rod (63), and the upper end of the first rocking rod (63) is rotatably connected to a hinge shaft (64). The end of the driving rod (192) away from the movable end plate (19) is hingedly connected to a second rocking rod (193), and the end of the second rocking rod (193) away from the driving rod (192) is rotatably connected to the hinge shaft (64). A fixed plate (7) is fixedly connected to the inner wall of the side panel (17), and a transversely arranged long groove (71) is provided on the fixed plate (7). The hinge shaft (64) extends into the long groove (71) and slidably cooperates with the long groove (71) to slide back and forth along the long groove (71).

6. The air purification device for an extruder according to claim 1, characterized in that: A tension spring (8) is provided on the outside of the side panel (17), one end of the tension spring (8) is fixed to the top of the side panel (17), and the other end of the tension spring (8) is fixed to the side of the movable end plate (19).

Images