Dust filtration and purification devices for flour mills

Abstract

The present invention relates to the technical field of dust filtering devices, and discloses a dust filtering and purification device suitable for a flour mill, including a purification cylinder, a dust collecting component is installed on the side of the purification cylinder, a dust vibration module is installed on the purification cylinder, a dust vibration frame that can reciprocate up and down and a rotatable rotating frame are connected to the dust vibration module by transmission, a rotating sleeve on the rotating frame is provided with a transmission sleeve, the transmission sleeve is linked to the rotating frame, the eccentric position of the rotating frame is slidably connected to a polarization seat, both sides of the polarization seat are provided with vibration springs connected to the rotating frame, an active gear ring is rotatably connected to the polarization seat, and a filter shaft is rotatably connected to the inner side of the active gear ring. When performing filtering operations, this filtering device can synchronously realize the vibration dust shaking in the axial direction and longitudinal direction of the filter element and the spiral dust cleaning and vibration ash removal on the outer surface of the filter element. By realizing the above-mentioned technical effects, the high filtering performance of the dust filtering device is effectively guaranteed and the blockage rate of the filtering device is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of dust filtering devices, and more specifically to a dust filtering and purifying device suitable for a flour mill. Background Art

[0002] In a flour processing plant, dust is generated during the production process of flour. Some of the dust will float in the air. When there is a lot of dust, it is easy to explode when encountering an open flame. It is also not good for people's health. Therefore, dust removal is required in the flour processing plant.

[0003] In the prior art, a patent document with publication number CN110180266B discloses a dust removal device for a flour mill, including a bottom plate, universal wheels, a shell, a protective net, a motor mounting plate, a bearing, a rotating shaft, a driving motor, a fan blade, filter cotton, a wind shield, a clamping device, a bracket, a filter element, a limit block, an ash box and a revolving door. Universal wheels are symmetrically arranged on the left and right sides of the bottom of the bottom plate, a shell is arranged on the top of the bottom plate, first openings are opened on the lower left and right sides of the shell, air inlets are opened on the upper left and right sides of the shell, and a protective net is arranged in the air inlet. A motor mounting plate is provided on the top of the outer shell. The dust removal equipment can continuously shake off the dust on the filter element through the striking rod and the striking block, thereby making the filter element clean and facilitating people to better shake off the dust on the filter element. However, the dust removal device is not convenient for synchronously realizing the vibration dust shaking in the axial and longitudinal directions of the filter element and the spiral dust cleaning and vibration ash removal on the outer surface of the filter element when performing dust filtering operations. Based on this, the present invention provides a dust filtering and purification device suitable for flour mills to solve the technical problems raised in the above background technology. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a dust filtering and purification device suitable for flour mills. When performing filtering operations, the filtering device can simultaneously realize vibration dust shaking in the axial and longitudinal directions of the filter element and spiral dust cleaning and vibration ash removal on the outer surface of the filter element. By achieving the above-mentioned technical effects, the high filtering performance of the dust filtering device is effectively guaranteed and the blockage rate of the filtering device is reduced.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a dust filtering and purification device suitable for a flour mill comprises a purification cylinder, a dust collecting component is installed on the side of the purification cylinder, a dust vibration module is installed on the purification cylinder, a dust vibration frame and a rotatable rotating frame are transmission-connected on the dust vibration module, a transmission sleeve is provided on the rotating frame, the transmission sleeve is linked with the rotating frame, a polarization seat is slidably connected at the eccentric position of the rotating frame, vibration springs connected to the rotating frame are installed on both sides of the polarization seat, an active gear ring is rotationally connected on the polarization seat, a filter shaft is rotationally connected on the inner side of the active gear ring, a tensioning transmission module driven by the transmission sleeve is installed on the rotating frame, the active gear ring and the filter shaft are connected to the tensioning transmission module, a filter element is fixedly installed on the bottom end of the filter shaft, two mirror-imaged cleaning brushes and two mirror-imaged vibration ash discharge assemblies are installed on the rotating frame, the cleaning brushes and the vibration ash discharge assemblies are both driven by the active gear ring, and a pulse exhaust and pulse reverse cleaning assembly are installed on the bottom end of the filter element.

[0006] As a preferred technical solution of the present invention, the dust-inducing component includes an air hood installed on the side of the purification cylinder and connected to the inner cavity of the purification cylinder, the air hood is connected to an air duct, and the inner wall of the air duct is sequentially installed with a ventilation guard net and an axial flow fan from the outside to the inside.

[0007] As a preferred technical solution of the present invention, the dust vibration module includes a top frame fixed on the purification cylinder, a worm motor is installed on the top frame, the inner wall of the top frame is rotatably connected with a central axis and a connecting shaft respectively, the central axis, the connecting shaft and the rotating frame are all driven by the worm motor, a dust vibration tooth plate is installed on the dust vibration frame, a first missing gear is installed on the connecting shaft, the first missing gear is transmission-connected with the dust vibration tooth plate, a T-shaped suspension rod is installed on the dust vibration frame, the T-shaped suspension rod is slidably connected with the top frame, and a reset spring limited by the top frame is sleeved on the T-shaped suspension rod.

[0008] As a preferred technical solution of the present invention, a first bevel gear is fixedly installed on the output shaft end and the center shaft of the worm motor, and the two first bevel gears are meshed with each other. A second bevel gear is installed on the center shaft and the connecting shaft, and the two second bevel gears are meshed with each other. A driven section is fixedly arranged on the rotating frame, and a linkage groove with a bottom end opening fixedly provided on the center shaft and slidingly connected to the driven section, and the cross-sections of the driven section and the linkage groove are both regular polygons.

[0009] As a preferred technical solution of the present invention, a first counter-coupling shaft is rotatably connected to the dust vibration frame, a first counter-coupling bevel gear is installed on the first counter-coupling shaft, upper bevel gears are installed on the rotating frame and the transmission sleeve, the first counter-coupling bevel gear is respectively connected to the two upper bevel gears in a transmission manner, and the two upper bevel gears are symmetrically arranged with the horizontal plane where the axis of the first counter-coupling shaft is located as the symmetry plane, a second counter-coupling shaft is rotatably connected to the polarization seat, a second counter-coupling shaft is installed on the second counter-coupling shaft, lower bevel gears are installed on the active gear ring and the filter shaft, the two lower bevel gears are both connected to the second counter-coupling bevel gears in a transmission manner, and the two lower bevel gears are symmetrically arranged with the horizontal plane where the axis of the second counter-coupling shaft is located as the symmetry plane.

[0010] As a preferred technical solution of the present invention, the tensioning transmission module includes a tensioning seat slidably connected to the rotating frame, tensioning springs are installed on both sides of the tensioning seat, and the two tensioning springs are fixedly connected to the rotating frame. A tensioning shaft is rotatably connected to the tensioning seat, and a tensioning belt is transmission-connected to the tensioning shaft, and the tensioning belt is transmission-connected to the filter shaft and the transmission sleeve respectively.

[0011] As a preferred technical solution of the present invention, the cleaning brush member includes a cleaning brush shaft rotatably connected to the polarization seat, a driven gear is installed on the cleaning brush shaft, the driven gear is transmission-connected to the driving gear ring, and spiral soft bristles are installed on the cleaning brush shaft, and the spiral soft bristles are in contact with the filter element.

[0012] As a preferred technical solution of the present invention, the rapping ash removal assembly includes a rapping shaft rotatably connected to a polarization seat, a torsion spring is fixedly arranged at the rotational connection between the rapping shaft and the dust vibration frame, a second missing gear is installed on the rapping shaft, and the second missing gear is transmission-connected to the active ring gear, a group of rapping rods distributed in a linear array are installed on the rapping shaft, a knocking ball is installed at the end of the rapping rod, and the rapping rod and the knocking ball are both made of silicone material.

[0013] As a preferred technical solution of the present invention, the pulse exhaust and pulse back-cleaning assembly includes a valve cylinder and an air guide seat, the air outlet port of the filter element is connected to the inner cavity of the air guide seat through a flexible joint, the bottom surface of the air guide seat is connected to a corrugated guide cylinder, the other end of the corrugated guide cylinder is fixedly connected to the valve cylinder, a valve hole is provided on the valve cylinder, a clean air exhaust pipe and a back-cleaning pipe are symmetrically installed on the purification cylinder and at positions corresponding to the valve hole, a back-cleaning air pump is installed on the purification cylinder, the air outlet port of the back-cleaning air pump is connected to the back-cleaning pipe, and the axes of the clean air exhaust pipe, the back-cleaning pipe and the valve hole are perpendicular to the axis of the valve cylinder.

[0014] As a preferred technical solution of the present invention, an ash discharge slope is fixedly provided inside the purification cylinder and at a position corresponding to the bottom of the filter element, and an ash discharge plug cooperating with the ash discharge slope is threadedly mounted on the purification cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When performing filtering operations, the filter device can simultaneously realize vibration dust shaking in the axial and longitudinal directions of the filter element and spiral dust cleaning and vibration dust removal on the outer surface of the filter element. By achieving the above technical effects, the high filtering performance of the dust filter device is effectively guaranteed and the blockage rate of the filter device is reduced.

[0017] 2. In the present invention, during the dust filtering and purification operation, the connecting shaft is driven, and after the connecting shaft is driven, the first missing gear is driven to rotate. After the first missing gear rotates, the dust vibration frame is enabled to reciprocate within a set stroke through the setting of the dust vibration tooth plate, the return spring and the T-shaped suspension rod. After the dust vibration frame reciprocates within the set stroke, it drives the filter element to vibrate in the axial direction. After the filter element vibrates in the axial direction, the dust and impurities trapped on the outside of the filter element are vibrated and shaken off. By achieving the vibration shaking off effect of trapped dust and trapped impurities, the dust-free degree and high air filtering performance of the filter element surface are improved, and by achieving the vibration shaking off effect of trapped dust and trapped impurities, the blockage rate of the filter element can be effectively reduced.

[0018] 3. When the worm motor outputs a rotational speed in the present invention, the rotational speed of the worm motor changes cyclically within a set range, thereby reciprocatingly changing the centrifugal force exerted on the polarization seat and then realizing the vibration of the polarization seat. Through the vibration of the polarization seat and the filter element in the longitudinal direction, the impurities or dust on the surface of the filter element can be self-shaken away in the longitudinal direction.

[0019] 4. In the present invention, when the cleaning brush shaft rotates, the conveying direction of the spiral soft bristles is downward, and then the impurities adhered to the outer surface of the filter element are continuously brushed out, thereby effectively reducing the dust accumulation rate on the outer surface of the filter element. Through the setting of the second missing gear and the active gear ring, the vibration shaft can reciprocate within the set angle. After the vibration shaft reciprocates within the set angle, it drives the vibration rod and the knocking ball to reciprocate and knock out the dust remaining in the filter element. By achieving the dust knocking effect, the residual rate of dust in the filter element is effectively reduced.

[0020] 5. When the present invention is working, the valve cylinder rotates at a set speed under the drive of the air guide seat. After the valve cylinder rotates, the valve hole is periodically connected with the clean air discharge pipe and the reverse cleaning pipe. During the connection period between the valve hole and the clean air discharge pipe, the clean air filtered out of the filter element is connected via the clean air discharge pipe. During the connection period between the reverse cleaning pipe and the clean air discharge pipe, the reverse cleaning air pump sends in the reverse cleaning airflow. After the reverse cleaning airflow is sent in, the residual impurities in the filter element are reversed and self-cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a dust filtering and purification device applicable to a flour mill according to the present invention;

[0022] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0023] Figure 3 For the present invention Figure 1 A schematic cross-sectional structure diagram of ;

[0024] Figure 4 For the present invention Figure 3 A schematic diagram of the local enlarged structure at B in the middle;

[0025] Figure 5 It is a schematic diagram of the structure of the filter element, polarization seat and active gear ring of the present invention;

[0026] Figure 6 For the present invention Figure 5 A schematic diagram of the local enlarged structure at C in the middle;

[0027] Figure 7 This is a schematic diagram of the structure of the air cleaning pipe and the spiral soft bristles of the present invention;

[0028] Figure 8 For the present invention Figure 7 Schematic diagram of the local enlarged structure at point D in the middle.

[0029] In the figure: 1, purification cylinder; 2, dust vibration frame; 3, rotating frame; 4, transmission sleeve; 5, polarization seat; 6, vibration spring; 7, driving gear ring; 8, filter shaft; 9, filter element; 10, induced draft cover; 11, induced draft cylinder; 12, axial flow induced draft fan; 13, top frame; 14, worm motor; 15, center shaft; 16, connecting shaft; 17, dust vibration tooth plate; 18, first missing gear; 19, T-shaped suspension rod; 20, reset spring; 21, first Counter-coupling shaft; 22. Second counter-coupling shaft; 23. Tensioning seat; 24. Tensioning spring; 25. Tensioning shaft; 26. Brushing shaft; 27. Driven gear; 28. Spiral soft bristles; 29. ​​Vibrating shaft; 30. Torsion spring; 31. Second missing gear; 32. Vibrating rod; 33. Beating ball; 34. Valve cylinder; 35. Air guide seat; 36. Corrugated guide cylinder; 37. Valve hole; 38. Clean air exhaust pipe; 39. Counter-cleaning pipe; 40. Counter-cleaning air pump. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 8As shown, the present invention provides a dust filtering and purification device suitable for a flour mill, comprising a purification cylinder 1, and a dust collecting component is installed on the side of the purification cylinder 1;

[0032] The dust collecting component includes an air induced draft hood 10 installed on the side of the purification cylinder 1 and connected to the inner cavity of the purification cylinder 1. The air induced draft hood 10 is connected to an air induced draft tube 11. The inner wall of the air induced draft tube 11 is sequentially installed with a ventilation guard net and an axial flow draft fan 12 from the outside to the inside.

[0033] During operation, the purification cylinder 1 is arranged in the flour workshop. After the purification cylinder 1 is arranged in the flour workshop, the axial flow induced draft fan 12 starts working. After the axial flow induced draft fan 12 starts working, the mixed air is then sent into the interior of the purification cylinder 1. The mixed air sent into the interior of the purification cylinder 1 can then filter the dust through the filter element 9.

[0034] A dust vibration module is installed on the purification cylinder 1, and a dust vibration frame 2 that can reciprocate up and down and a rotatable rotating frame 3 are transmission-connected to the dust vibration module;

[0035] The dust vibration module includes a top frame 13 fixed on the purification cylinder 1, a worm motor 14 is installed on the top frame 13, the inner wall of the top frame 13 is rotatably connected with a central shaft 15 and a connecting shaft 16, and the central shaft 15, the connecting shaft 16 and the rotating frame 3 are all driven by the worm motor 14;

[0036] The first bevel gears are fixedly mounted on the output shaft end of the worm motor 14 and the central shaft 15, and the two first bevel gears are meshed with each other;

[0037] The central shaft 15 and the connecting shaft 16 are provided with second bevel gears, and the two second bevel gears are meshed with each other;

[0038] A driven section is fixedly arranged on the rotating frame 3, and a linkage groove with a bottom opening and slidably connected to the driven section is fixedly opened on the central shaft 15;

[0039] The cross sections of the driven section and the linkage groove are both regular polygons;

[0040] By setting the regular polygonal cross-section of the driven section and the linkage groove, the central shaft 15 can continuously drive the driven section and the rotating frame 3 when the dust vibration frame 2 reciprocates up and down;

[0041] A dust vibration tooth plate 17 is installed on the dust vibration frame 2, and a first missing gear 18 is installed on the connecting shaft 16. The first missing gear 18 is transmission-connected to the dust vibration tooth plate 17;

[0042] A T-shaped suspension rod 19 is installed on the dust vibration frame 2, and the T-shaped suspension rod 19 is slidably connected to the top frame 13. A return spring 20 is sleeved on the T-shaped suspension rod 19 and is limited by the top frame 13.

[0043] During the dust filtering and purification operation, the connecting shaft 16 is driven, and after the connecting shaft 16 is driven, the first missing gear 18 is driven to rotate. After the first missing gear 18 rotates, the dust vibration rack 2 can reciprocate within the set stroke through the setting of the dust vibration tooth plate 17, the return spring 20 and the T-shaped suspension rod 19;

[0044] After the dust vibration frame 2 reciprocates within the set stroke, it drives the filter element 9 to vibrate in the axial direction. After the filter element 9 vibrates in the axial direction, the dust and impurities trapped outside the filter element 9 are shaken off by vibration. By achieving the effect of vibration shaking off the trapped dust and impurities, the dust-free degree and high air filtering performance of the surface of the filter element 9 are improved.

[0045] And by achieving the effect of intercepting dust and intercepting impurities through vibration and shaking, the clogging rate of the filter element 9 can be effectively reduced;

[0046] The rotating sleeve on the rotating frame 3 is provided with a transmission sleeve 4, and the transmission sleeve 4 is linked with the rotating frame 3;

[0047] The dust vibration frame 2 is rotatably connected with a first counter-coupling shaft 21, on which a first counter-coupling bevel gear is installed, and upper bevel gears are installed on the rotating frame 3 and the transmission sleeve 4, and the first counter-coupling bevel gear is respectively connected to the two upper bevel gears in a transmission manner;

[0048] The two upper bevel teeth are symmetrically arranged with the horizontal plane where the axis of the first counter coupling shaft 21 is located as the symmetry plane;

[0049] By setting the first anti-connected bevel gear and the two upper bevel gears, the rotating frame 3 and the transmission sleeve 4 are in a coaxial and oppositely rotating state;

[0050] The eccentric position of the rotating frame 3 is slidably connected with a polarizing seat 5, and both sides of the polarizing seat 5 are equipped with vibration springs 6 connected with the rotating frame 3;

[0051] Vibration springs 6 are arranged on both sides of the polarization seat 5, so that the polarization seat 5 can be displaced or vibrated in the longitudinal direction of the filter element 9 due to the centrifugal force generated by the rotation of the rotating frame 3 during the rotation of the rotating frame 3;

[0052] When the worm motor 14 outputs a rotation speed, the rotation speed of the worm motor 14 changes cyclically within a set range, thereby reciprocatingly changing the centrifugal force on the polarization seat 5 and then achieving vibration of the polarization seat 5;

[0053] Through the vibration of the polarizing seat 5 and the filter element 9 in the longitudinal direction, the impurities or dust on the surface of the filter element 9 can be self-shaken away in the longitudinal direction;

[0054] The polarization seat 5 is rotatably connected with an active gear ring 7, the inner side of the active gear ring 7 is rotatably connected with a filter shaft 8, and a tensioning transmission module driven by a transmission sleeve 4 is installed on the rotating frame 3, and the active gear ring 7 and the filter shaft 8 are connected to the tensioning transmission module;

[0055] The tensioning transmission module includes a tensioning seat 23 slidably connected to the rotating frame 3, tensioning springs 24 are installed on both sides of the tensioning seat 23, and the two tensioning springs 24 are fixedly connected to the rotating frame 3. A tensioning shaft 25 is rotatably connected to the tensioning seat 23, and a tensioning belt is transmission-connected to the tensioning shaft 25, and the tensioning belt is transmission-connected to the filter shaft 8 and the transmission sleeve 4 respectively;

[0056] When the polarization seat 5 vibrates, the tensioning seat 23 and the tensioning spring 24 are arranged so that the tensioning belt can continuously drive the filter shaft 8 on the polarization seat 5;

[0057] The polarization seat 5 is rotatably connected with a second anti-coupling shaft 22, and a second anti-coupling bevel gear is installed on the second anti-coupling shaft 22. The active gear ring 7 and the filter shaft 8 are both equipped with lower bevel gears, and the two lower bevel gears are both transmission-connected with the second anti-coupling bevel gears. The two lower bevel gears are symmetrically arranged with the horizontal plane where the axis of the second anti-coupling shaft 22 is located as the symmetry plane;

[0058] By setting the second counter-coupling shaft 22, the rotation directions of the active gear ring 7 and the filter shaft 8 are opposite;

[0059] A filter element 9 is fixedly mounted at the bottom end of the filter shaft 8, and the filter element 9 is used to filter the dust in the flour mill;

[0060] Two mirror-image-arranged cleaning brushes and two mirror-image-arranged vibrating dust removal assemblies are installed on the rotating frame 3. The cleaning brushes and the vibrating dust removal assemblies are driven by the active ring gear 7. The bottom end of the filter element 9 is installed with a pulse exhaust and pulse reverse cleaning assembly.

[0061] The cleaning brush member includes a cleaning brush shaft 26 rotatably connected to the polarization seat 5 , a driven gear 27 is installed on the cleaning brush shaft 26 , the driven gear 27 is transmission-connected to the driving ring gear 7 , and a spiral soft bristle 28 is installed on the cleaning brush shaft 26 , and the spiral soft bristle 28 is in contact with the filter element 9 .

[0062] When the cleaning brush shaft 26 rotates, the conveying direction of the spiral soft bristles 28 is downward, and then the impurities adhering to the outer surface of the filter element 9 are continuously brushed out, thereby effectively reducing the dust accumulation rate on the outer surface of the filter element 9;

[0063] The rapping dust removal assembly includes a rapping shaft 29 rotatably connected to the polarization seat 5, a torsion spring 30 is fixedly arranged at the rotation connection between the rapping shaft 29 and the dust vibration frame 2, a second missing gear 31 is installed on the rapping shaft 29, and the second missing gear 31 is transmission-connected to the active ring gear 7, a group of rapping rods 32 distributed in a linear array are installed on the rapping shaft 29, and a knocking ball 33 is installed at the end of the rapping rod 32, and both the rapping rod 32 and the knocking ball 33 are made of silicone material.

[0064] By setting the second missing gear 31 and the active gear ring 7, the rapping shaft 29 can reciprocate within a set angle. After the rapping shaft 29 reciprocates within the set angle, it drives the rapping rod 32 and the knocking ball 33 to reciprocate and knock out the dust remaining in the filter element 9. By achieving the dust knocking effect, the residual rate of dust in the filter element 9 is effectively reduced;

[0065] The pulse exhaust and pulse back-cleaning components include a valve cylinder 34 and an air guide seat 35. The air outlet port of the filter element 9 is connected to the inner cavity of the air guide seat 35 through a flexible joint. The bottom surface of the air guide seat 35 is connected to a corrugated guide cylinder 36. The other end of the corrugated guide cylinder 36 is fixedly connected to the valve cylinder 34. A valve hole 37 is provided on the valve cylinder 34. A clean air discharge pipe 38 and a back-cleaning pipe 39 are symmetrically installed on the purification cylinder 1 and corresponding to the position of the valve hole 37. An back-cleaning air pump 40 is installed on the purification cylinder 1. The air outlet port of the back-cleaning air pump 40 is connected to the back-cleaning pipe 39. The axes of the clean air discharge pipe 38, the back-cleaning pipe 39 and the valve hole 37 are perpendicular to the axis of the valve cylinder 34.

[0066] During operation, the valve cylinder 34 rotates at a set speed under the drive of the air guide seat 35. After the valve cylinder 34 rotates, the valve hole 37 is periodically connected with the clean air discharge pipe 38 and the anti-cleaning pipe 39. During the communication period between the valve hole 37 and the clean air discharge pipe 38, the clean air filtered out by the filter element 9 is connected via the clean air discharge pipe 38. During the communication period between the anti-cleaning pipe 39 and the clean air discharge pipe 38, the anti-cleaning air pump 40 delivers the anti-cleaning airflow. After the anti-cleaning airflow is delivered, the residual impurities in the filter element 9 are self-cleaned.

[0067] The air intake pressure of the anti-cleaning air pump 40 is higher than the air intake pressure of the axial flow induced draft fan 12;

[0068] An ash discharge slope is fixedly provided inside the purification cylinder 1 and at a position corresponding to the bottom of the filter element 9 , and an ash discharge plug 41 matching the ash discharge slope is threadedly mounted on the purification cylinder 1 .

[0069] The working principle and use process of the present invention:

[0070] During operation, the purification cylinder 1 is arranged in the flour workshop. After the purification cylinder 1 is arranged in the flour workshop, the axial flow induced draft fan 12 starts working. After the axial flow induced draft fan 12 starts working, the mixed air is then sent into the interior of the purification cylinder 1. The mixed air sent into the interior of the purification cylinder 1 can then filter the dust through the filter element 9. During the dust filtering and purification operation, the connecting shaft 16 is driven. After the connecting shaft 16 is driven, the first missing gear 18 is driven to rotate. After the first missing gear 18 rotates, the dust vibration rack 2 can reciprocate within the set stroke through the setting of the dust vibration tooth plate 17, the return spring 20 and the T-shaped suspension rod 19. After the dust vibration rack 2 reciprocates within the set stroke , thereby driving the filter element 9 to vibrate in the axial direction. After the filter element 9 vibrates in the axial direction, the dust and impurities trapped outside the filter element 9 are shaken off by vibration. The dust-free degree and high air filtering performance of the surface of the filter element 9 are improved by the vibration and shaking off effect of trapping dust and impurities. The blockage rate of the filter element 9 can be effectively reduced by the vibration and shaking off effect of trapping dust and impurities. When the worm motor 14 outputs a speed, the speed of the worm motor 14 changes cyclically within a set range, thereby reciprocatingly changing the centrifugal force on the polarization seat 5 and then realizing the vibration of the polarization seat 5. The polarization seat 5 and the filter element 9 are longitudinally moved. The vibration on the filter element 9 is realized to realize the self-shaking removal of impurities or dust on the surface of the filter element 9 in the longitudinal direction. When the polarization seat 5 vibrates, the tensioning seat 23 and the tensioning spring 24 are set, so that the tensioning belt can continuously drive the filter shaft 8 on the polarization seat 5. When the cleaning brush shaft 26 rotates, the conveying direction of the spiral soft bristles 28 is downward, and then the impurities adhered to the outer surface of the filter element 9 are continuously brushed out, thereby effectively reducing the dust accumulation rate on the outer surface of the filter element 9. The second missing gear 31 and the active gear ring 7 are set, so that the vibration shaft 29 can reciprocate within the set angle. After the vibration shaft 29 reciprocates within the set angle, it then drives the vibration rod 32 and the knocking rod 33 to move. The striking ball 33 reciprocates to knock out the dust remaining in the filter element 9, and the dust knocking effect is achieved, thereby effectively reducing the residual rate of dust in the filter element 9. During operation, the valve cylinder 34 rotates at a set speed under the drive of the air guide seat 35. After the valve cylinder 34 rotates, the valve hole 37 is periodically connected with the clean air discharge pipe 38 and the anti-cleaning pipe 39. During the connection period between the valve hole 37 and the clean air discharge pipe 38, the clean air filtered out by the filter element 9 is connected via the clean air discharge pipe 38. During the connection period between the anti-cleaning pipe 39 and the clean air discharge pipe 38, the anti-cleaning air pump 40 delivers an anti-cleaning airflow. After the anti-cleaning airflow is delivered, the anti-cleaning and self-cleaning of the residual impurities in the filter element 9 is achieved.

[0071] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust filtering and purification device suitable for a flour mill, comprising a purification cartridge (1), characterized in that: A dust collecting component is installed on the side of the purification cylinder (1), and a dust vibration module is installed on the purification cylinder (1). The dust vibration module is connected to a dust vibration frame (2) that can reciprocate up and down and a rotatable rotating frame (3). A transmission sleeve (4) is rotatably provided on the rotating frame (3). The transmission sleeve (4) is linked with the rotating frame (3). The eccentric position of the rotating frame (3) is slidably connected to a polarization seat (5). Both sides of the polarization seat (5) are installed with vibration springs (6) connected to the rotating frame (3). The polarization seat (5) is rotatably connected to an active gear ring ( 7), the inner side of the active gear ring (7) is rotatably connected to a filter shaft (8), a tensioning transmission module driven by a transmission sleeve (4) is installed on the rotating frame (3), the active gear ring (7) and the filter shaft (8) are connected to the tensioning transmission module, a filter element (9) is fixedly installed on the bottom end of the filter shaft (8), two mirror-image-arranged cleaning brushes and two mirror-image-arranged vibration and ash removal assemblies are installed on the rotating frame (3), the cleaning brushes and the vibration and ash removal assemblies are both driven by the active gear ring (7), and a pulse exhaust and pulse reverse cleaning assembly is installed on the bottom end of the filter element (9).

2. The dust filtering and purification device suitable for a flour mill according to claim 1, characterized in that: The dust collecting component comprises an air induced draft hood (10) mounted on the side of the purification cylinder (1) and connected to the inner cavity of the purification cylinder (1); the air induced draft hood (10) is connected to an air induced draft cylinder (11); and a ventilation guard net and an axial flow draft fan (12) are sequentially mounted on the inner wall of the air induced draft cylinder (11) from the outside to the inside.

3. The dust filtering and purification device suitable for a flour mill according to claim 2 is characterized in that: The dust vibration module comprises a top frame (13) fixed on the purification cylinder (1), a worm motor (14) is installed on the top frame (13), the inner wall of the top frame (13) is rotatably connected with a central shaft (15) and a connecting shaft (16), the central shaft (15), the connecting shaft (16) and the rotating frame (3) are all driven by the worm motor (14), a dust vibration tooth plate (17) is installed on the dust vibration frame (2), a first missing gear (18) is installed on the connecting shaft (16), the first missing gear (18) is transmission-connected with the dust vibration tooth plate (17), a T-shaped suspension rod (19) is installed on the dust vibration frame (2), the T-shaped suspension rod (19) is slidably connected with the top frame (13), and a reset spring (20) is sleeved on the T-shaped suspension rod (19) which is limited by the top frame (13).

4. The dust filtering and purification device suitable for a flour mill according to claim 3 is characterized in that: A first bevel gear is fixedly mounted on the output shaft end of the worm motor (14) and the center shaft (15), and the two first bevel gears are meshed with each other. A second bevel gear is mounted on the center shaft (15) and the connecting shaft (16), and the two second bevel gears are meshed with each other. A driven section is fixedly mounted on the rotating frame (3), and a linkage groove with a bottom opening fixedly opened on the center shaft (15) and slidably connected to the driven section is fixedly mounted, and the cross sections of the driven section and the linkage groove are both regular polygons.

5. The dust filtering and purification device suitable for a flour mill according to claim 3 is characterized in that: The dust vibration frame (2) is rotatably connected to a first counter-coupling shaft (21), and a first counter-coupling bevel gear is installed on the first counter-coupling shaft (21). The rotating frame (3) and the transmission sleeve (4) are both equipped with upper bevel gears. The first counter-coupling bevel gear is respectively connected to two upper bevel gears in a transmission manner. The two upper bevel gears are symmetrically arranged with the horizontal plane where the axis of the first counter-coupling shaft (21) is located as a symmetry plane. The polarization seat (5) is rotatably connected to a second counter-coupling shaft (22), and a second counter-coupling bevel gear is installed on the second counter-coupling shaft (22). The active gear ring (7) and the filter shaft (8) are both equipped with lower bevel gears. The two lower bevel gears are connected to the second counter-coupling bevel gears in a transmission manner. The two lower bevel gears are symmetrically arranged with the horizontal plane where the axis of the second counter-coupling shaft (22) is located as a symmetry plane.

6. The dust filtering and purification device suitable for a flour mill according to claim 5, characterized in that: The tensioning transmission module comprises a tensioning seat (23) slidably connected to the rotating frame (3), tensioning springs (24) are installed on both sides of the tensioning seat (23), and the two tensioning springs (24) are fixedly connected to the rotating frame (3). The tensioning seat (23) is rotatably connected to a tensioning shaft (25), and the tensioning shaft (25) is transmission-connected to a tensioning belt, and the tensioning belt is transmission-connected to the filter shaft (8) and the transmission sleeve (4) respectively.

7. The dust filtering and purification device suitable for a flour mill according to claim 5, characterized in that: The cleaning brush member comprises a cleaning brush shaft (26) rotatably connected to the polarization seat (5), a driven gear (27) being mounted on the cleaning brush shaft (26), the driven gear (27) being transmission-connected to the driving gear ring (7), and spiral soft bristles (28) being mounted on the cleaning brush shaft (26), the spiral soft bristles (28) being in contact with the filter element (9).

8. The dust filtering and purification device for flour mills according to claim 5 is characterized in that: The rapping dust removal component comprises a rapping shaft (29) rotatably connected to a polarization seat (5); a torsion spring (30) is fixedly arranged at the rotation connection between the rapping shaft (29) and the dust vibration frame (2); a second missing gear (31) is installed on the rapping shaft (29); the second missing gear (31) is transmission-connected to an active gear ring (7); a group of rapping rods (32) distributed in a linear array are installed on the rapping shaft (29); a knocking ball (33) is installed at the end of the rapping rod (32); and both the rapping rod (32) and the knocking ball (33) are made of silicone.

9. The dust filtering and purification device for flour mills according to claim 8, characterized in that: The pulse exhaust and pulse back-cleaning assembly comprises a valve cylinder (34) and an air guide seat (35); the air outlet port of the filter element (9) is connected to the inner cavity of the air guide seat (35) through a flexible joint; the bottom surface of the air guide seat (35) is connected to a corrugated guide cylinder (36); the other end of the corrugated guide cylinder (36) is fixedly connected to the valve cylinder (34); a valve hole (37) is provided on the valve cylinder (34); a clean air exhaust pipe (38) and a back-cleaning pipe (39) are symmetrically installed on the purification cylinder (1) and at positions corresponding to the valve hole (37); a back-cleaning air pump (40) is installed on the purification cylinder (1); the air outlet port of the back-cleaning air pump (40) is connected to the back-cleaning pipe (39); the axes of the clean air exhaust pipe (38), the back-cleaning pipe (39) and the valve hole (37) are perpendicular to the axis of the valve cylinder (34).

10. The dust filtering and purification device suitable for a flour mill according to claim 1, characterized in that: An ash discharge slope is fixedly arranged inside the purification cylinder (1) and at a position corresponding to the bottom of the filter element (9), and an ash discharge plug (41) matching the ash discharge slope is threadedly mounted on the purification cylinder (1).

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