Dust removal device for filtering conduction band of tentering setting machine

Abstract

The invention relates to the technical field of tentering setting machines, in particular to a tentering setting machine filtering conduction band dust removal device which comprises a dust removal shell, the side wall of the dust removal shell is communicated with a hollow pipe, a filtering net cylinder is arranged in the dust removal shell, and rotating rings are fixed to the two ends of the filtering net cylinder. Limiting rings which are symmetrically distributed are fixed to the inner wall of the dust removal shell, scraping plates which are symmetrically distributed are fixed between the limiting rings, a partition plate is arranged on the inner wall of the filter screen cylinder, a rotating rod penetrates through the end face of the dust removal shell, and the rotating rod is connected with a driving mechanism, a transmission mechanism and a reverse blowing mechanism; when there are many impurities such as dust and thread ends on the surface of the filter screen cylinder, the filter screen cylinder is driven to rotate through the rotating ring, the filter screen cylinder in the rotating process is cleaned through the scraping plate, meanwhile, back flushing is conducted on the filter screen cylinder from the interior of the filter screen cylinder, and the impurities such as dust and thread ends adsorbed in meshes can be effectively blown off; and the cleaning effect on the filter screen cylinder is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of stenter machines, and particularly to a dust removal device for a filter guide belt of a stenter machine. Background Art

[0002] A stenter machine is an essential main device in the field of fabric printing and dyeing. It is a necessary device for post-treatment of fabrics and improving the mechanical properties of fabrics. A filter wire mesh is provided in the oven of the existing stenter machine, and some yarn dust in the fabric can be filtered out by the filter wire mesh.

[0003] In the prior art, when the dust removal device for the filter guide belt of a stenter machine is in use, most of them directly use the air blowing device in the oven to blow air onto the guide belt, so as to blow off impurities such as dust and thread ends adsorbed on the guide belt, and filter these impurities through a filter mesh plate.

[0004] However, this dust removal device has certain defects. With the long-term use of the device, some dust and thread ends will be adsorbed on the surface of the mesh plate, resulting in blockage of the mesh holes and affecting the air outlet effect. This requires the staff to regularly clean the filter mesh plate, wasting manpower and reducing the dust removal efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a dust removal device for a filter guide belt of a stenter machine to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A dust removal device for a filter guide belt of a stenter machine, including a dust removal outer shell. A hollow tube is communicated with the side wall of the dust removal outer shell. A filter mesh cylinder is arranged inside the dust removal outer shell. Rotating rings are fixed at both ends of the filter mesh cylinder. One end of the rotating ring far from the filter mesh cylinder is attached to the end face inside the end of the dust removal outer shell. Symmetrically distributed limiting rings are fixed on the inner wall of the dust removal outer shell. The inner walls of the two limiting rings are respectively slidably connected with the outer walls of the two rotating rings. Symmetrically distributed scraping plates are fixed between the limiting rings. One end of the scraping plate close to the filter mesh cylinder is slidably connected with the outer wall of the filter mesh cylinder. The other end of the scraping plate far from the filter mesh cylinder is fixed to the inner wall of the dust removal outer shell. There are symmetrically distributed impurity discharge ports on both sides of the scraping plate and at the bottom of the dust removal outer shell. A partition plate is arranged on the inner wall of the filter mesh cylinder. Two opposite side walls of the partition plate are slidably connected with the inner wall of the filter mesh cylinder, and the other two opposite side walls of the partition plate are fixed to the end face inside the dust removal outer shell. An air outlet is arranged on one end face of the dust removal outer shell on the side close to the hollow tube, inside the filter mesh cylinder, and on the side of the partition plate. A rotating rod penetrates through the other end face of the dust removal outer shell. The rotating rod is connected with a driving mechanism, a transmission mechanism, and a back blowing mechanism. The driving mechanism is used to drive the rotating rod to rotate. When the rotating rod rotates, the rotating rod drives the rotating ring to rotate through the transmission mechanism, and blows back the filter mesh cylinder through the back blowing mechanism.

[0007] Preferably, the transmission mechanism includes a gear fixedly connected to the end of the rotating rod, and a toothed ring is fixed to the outside of one of the rotating rings, and the toothed ring meshes with the gear.

[0008] Preferably, the driving mechanism includes a transmission rod penetrating through the side wall of the hollow tube. Pulley wheels are fixed to both the transmission rod and the rotating rod, and the pulley wheels are connected by a belt in transmission. A plurality of fan blades are fixed to the outside of the transmission rod inside the hollow tube in a circumferential distribution. The transmission rod is connected with a fixing component for fixing the transmission rod.

[0009] Preferably, the fixing component includes a guiding column fixed to the outside of the hollow tube, a positioning rod penetrates through the guiding column, and a positioning groove adapted to the positioning rod is provided on the outside of the rotating rod. One end of the positioning rod is located inside the positioning groove, and a first stopper is fixed to the other end of the positioning rod. The first stopper is connected to the side wall of the guiding column through a first elastic member.

[0010] Preferably, a pin rod penetrates through one end of the guiding column away from the hollow tube, a second stopper is fixed to the end of the pin rod, and the second stopper is connected to the end face of the guiding column through a second elastic member. A pin groove adapted to the pin rod is provided on the side wall of the positioning rod.

[0011] Preferably, the back blowing mechanism includes an air cavity provided inside the partition plate. A plurality of air blowing pipes are fixed to the side wall of the partition plate, and the air blowing pipes are located on the side of the partition plate away from the hollow tube. The air blowing pipes are all communicated with the air cavity. The air cavity is connected with an air inlet component for ventilating the air cavity.

[0012] Preferably, the air inlet component includes a support plate fixed to the outer end face of the dust removal housing. An air pressure cylinder is fixed to the side wall of the support plate. A piston is slidably connected inside the air pressure cylinder. The piston is fixedly connected with a sliding rod. The sliding rod penetrates through the end face of the air pressure cylinder and is slidably connected with the end face of the air pressure cylinder. A pressing plate is fixed to the end of the sliding rod away from the piston. The pressing plate is fixedly connected to the end face of the air pressure cylinder through a third elastic member. A pushing block capable of extruding the pressing plate is fixed to the outside of the rotating rod. An air inlet pipe and an air outlet pipe are connected to the side wall of the air pressure cylinder on the side of the piston away from the sliding rod. The air outlet pipe penetrates through the dust-proof housing and is communicated with the air cavity.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention filters impurities such as dust and lint through the filter mesh cylinder inside the dust removal shell. When there are a lot of impurities such as dust and lint on the surface of the filter mesh cylinder, the filter mesh cylinder is driven to rotate by the rotating ring, and the filter mesh cylinder is cleaned during the rotation process by the scraper. At the same time, the filter mesh cylinder is backblown from the inside of the filter mesh cylinder, which can effectively blow off the dust, lint and other impurities adsorbed inside the mesh holes, effectively improving the cleaning effect of the filter mesh cylinder, and there is no need to manually clean the dust, lint and other impurities on the surface of the filter mesh cylinder, saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The external structure of the dust removal housing in the embodiment of the present invention is shown in FIG. Figure 1 .

[0015] Figure 2 The external structure of the dust removal housing in the embodiment of the present invention is shown in FIG. Figure 2 .

[0016] Figure 3 It is a schematic diagram of the connection structure between the scraper and the limiting ring in an embodiment of the present invention.

[0017] Figure 4 It is a schematic diagram of the connection structure between the filter cylinder and the rotating ring in an embodiment of the present invention.

[0018] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0019] Figure 6 Schematic diagram of the internal structure of the air pressure cylinder in an embodiment of the present invention.

[0020] In the figure: 1-dust removal shell; 2-hollow tube; 3-transmission mechanism; 31-gear; 32-toothed ring; 4-driving mechanism; 41-transmission rod; 42-pulley; 43-belt; 44-fan blade; 45-positioning rod; 46-guide column; 47-first block; 48-second block; 49-first elastic member; 410-second elastic member; 411-pin rod; 5-backblowing mechanism; 51-air blowing pipe; 52-air cavity; 53-support plate; 54-inlet pipe; 55-outlet pipe; 56-air pressure cylinder; 57-piston; 58-sliding rod; 59-third elastic member; 510-pressing plate; 511-pushing block; 6-impurity outlet; 7-outlet; 8-scraper; 9-limiting ring; 10-filter screen cylinder; 11-rotating ring; 12-partition plate; 13-rotating rod. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The following describes in detail the specific implementation of the present invention with reference to specific embodiments.

[0023] In one embodiment, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , a filtering and dust-removing device for a stenter filter belt, comprising a dust-removing outer shell 1, a hollow tube 2 is communicated with the side wall of the dust-removing outer shell 1, a filter screen cylinder 10 is arranged inside the dust-removing outer shell 1, rotating rings 11 are fixed at both ends of the filter screen cylinder 10, and one end of the rotating ring 11 away from the filter screen cylinder 10 is attached to the end face inside the end of the dust-removing outer shell 1. Symmetrically distributed limiting rings 9 are fixed on the inner wall of the dust-removing outer shell 1, and the inner walls of the two limiting rings 9 are respectively slidably connected with the outer walls of the two rotating rings 11. Symmetrically distributed scraping plates 8 are fixed between the limiting rings 9. One end of the scraping plate 8 close to the filter screen cylinder 10 is slidably connected with the outer wall of the filter screen cylinder 10, and the end of the scraping plate 8 away from the filter screen cylinder 10 is fixed to the inner wall of the dust-removing outer shell 1. Impurity discharge ports 6 are symmetrically distributed on both sides of the scraping plate 8 and at the bottom of the dust-removing outer shell 1. A partition plate 12 is arranged on the inner wall of the filter screen cylinder 10. Two opposite side walls of the partition plate 12 are slidably connected with the inner wall of the filter screen cylinder 10, and the other two opposite side walls of the partition plate 12 are fixed to the end face inside the dust-removing outer shell 1. An air outlet 7 is arranged on one end face of the dust-removing outer shell 1 on the side of the partition plate 12 close to the hollow tube 2, inside the filter screen cylinder 10. A rotating rod 13 penetrates through the other end face of the dust-removing outer shell 1. The rotating rod 13 is connected with a driving mechanism 4, a transmission mechanism 3 and a back-blowing mechanism 5. The driving mechanism 4 is used to drive the rotating rod 13 to rotate. When the rotating rod 13 rotates, the rotating rod 13 drives the rotating ring 11 to rotate through the transmission mechanism 3, and blows back the filter screen cylinder 10 through the back-blowing mechanism 5.

[0024] In this embodiment, when the dust removal device is in use, the end of the hollow tube 2 far from the dust removal housing 1 is connected to the air outlet on the oven. Under the action of the blower, dust, lint and other impurities on the conveyor belt will enter the interior of the hollow tube 2 through the air outlet and flow into the interior of the dust removal housing 1 along the air flow. Limited by the limiting ring 9 and the scraper 8, the air flow can only pass through the side wall of the filter mesh cylinder 10 and enter the interior of the filter mesh cylinder 10. Dust, lint and other impurities are filtered on the outer surface of the filter mesh cylinder 10. At the same time, limited by the internal partition 12 of the mesh cylinder, the air flow will pass through the air outlet 7 on the side wall of the dust removal housing 1 and be discharged to the outside, thus achieving the purpose of dust removal. When there are too many dust, lint and other impurities on the outer wall of the filter mesh cylinder 10, which affect the air outlet effect, the driving mechanism 4 drives the rotating rod 13 to rotate. The rotating rod 13 drives the rotating ring 11 to rotate through the transmission mechanism 3. The rotating ring 11 drives the filter mesh cylinder 10 to rotate. While the filter mesh cylinder 10 is rotating, the scraper 8 inside the dust removal housing 1 will scrape the dust, lint and other impurities on the outer wall of the filter mesh cylinder 10, thus preventing the dust, lint and other impurities from accumulating on the surface of the filter mesh cylinder 10. As the filter mesh cylinder 10 continues to rotate, the back blowing mechanism 5 will blow air from the inside of the filter mesh cylinder 10 to the side wall of the filter mesh cylinder 10, thus playing a back blowing role on the filter mesh cylinder 10, which can effectively blow off the dust, lint and other impurities adsorbed inside the mesh holes, further improving the cleaning effect of the filter mesh cylinder 10, and there is no need for manual cleaning of the dust, lint and other impurities on the surface of the filter mesh cylinder 10, saving manpower. In order to ensure the filtering effect on dust, lint and other impurities, a sealing plug is provided at the impurity discharge port 6 on the side of the scraper 8 close to the air inlet pipe 54. Sealing the impurity discharge port 6 can prevent the dust, lint and other impurities from directly flowing out of the impurity discharge port 6 along the air flow to the outside of the dust removal housing 1 when filtering the dust, lint and other impurities. When there are too many dust, lint and other impurities inside the dust removal housing 1, the sealing plug can be opened. In order to ensure the back blowing effect of the back blowing mechanism 5, the impurity discharge port 6 on the side of the scraper 8 far from the hollow tube 2 is always in an open state, so as to ensure the smooth flow of the gas discharged by the back blowing mechanism 5.

[0025] Please refer to Figure 3 As shown in the figure, the transmission mechanism 3 includes a gear 31 fixedly connected to the end of the rotating rod 13. A toothed ring 32 is fixed on the outside of one of the rotating rings 11, and the toothed ring 32 meshes with the gear 31; While the rotating rod 13 is rotating, it drives the gear 31 to rotate. The rotation of the gear 31 drives the rotating ring 11 to rotate through the meshing with the toothed ring 32, and then drives the filter mesh cylinder 10 to rotate, so that the scraper 8 and the back blowing mechanism 5 can clean the dust, lint and other impurities on the surface of the filter mesh cylinder 10.

[0026] Please refer to Figure 1, the driving mechanism 4 includes a transmission rod 41 penetrating through the side wall of the hollow tube 2. Pulley 42 is fixed outside both the transmission rod 41 and the rotating rod 13. The pulleys 42 are connected by a belt 43 for transmission. Inside the hollow tube 2 and outside the transmission rod 41, fan blades 44 are fixed in a circumferential distribution. The transmission rod 41 is connected with a fixing component for fixing the transmission rod 41. When it is necessary to clean impurities such as dust and lint on the surface of the filter mesh cylinder 10, the fixing of the transmission rod 41 by the fixing component is released. At this time, when the air flow passes through the inside of the hollow tube 2, it will circulate and impact on the surfaces of multiple fan blades 44, so that the fan blades 44 drive the transmission rod 41 to rotate. The transmission rod 41 drives the rotating rod 13 to rotate through the belt 43 and the pulley 42. Furthermore, the rotating rod 13 can drive the filter mesh cylinder 10 to rotate through the transmission mechanism 3 and blow the filter mesh cylinder 10 through the backwashing mechanism 5. There is no need for manual cleaning of the surface of the filter mesh cylinder 10, which saves manpower and has a good cleaning effect. When the impurities such as dust and lint on the surface of the filter mesh cylinder 10 are cleaned up, the transmission rod 41 is fixed again by the fixing component. At this time, even if the fan blades 44 are impacted by the air flow, they will not drive the transmission rod 41 to rotate, effectively ensuring the stability of the filter mesh cylinder 10.

[0027] Please refer to Figure 5 , the fixing component includes a guide post 46 fixed outside the hollow tube 2. A positioning rod 45 penetrates through the inside of the guide post 46. A positioning groove adapted to the positioning rod 45 is provided outside the rotating rod 13. One end of the positioning rod 45 is located inside the positioning groove, and a first stop block 47 is fixed at the other end of the positioning rod 45. The first stop block 47 is connected to the side wall of the guide post 46 through a first elastic member 49. When it is necessary to clean impurities such as dust and lint on the surface of the filter mesh cylinder 10, the positioning rod 45 is pulled out from the positioning groove by pulling the first stop block 47. Without the positioning of the positioning rod 45, when the fan blades 44 are impacted by the air flow, the transmission rod 41 can be driven to rotate. When the impurities such as dust and lint on the surface of the filter mesh cylinder 10 are cleaned up, the first stop block 47 is released. At this time, the end of the positioning rod 45 automatically enters the positioning groove under the action of the first elastic member 49, thereby fixing the transmission rod 41. The first elastic member 49 can be a spring.

[0028] Please refer to Figure 5 , a pin rod 411 penetrates through one end of the guide post 46 away from the hollow tube 2. A second stop block 48 is fixed at the end of the pin rod 411. The second stop block 48 is connected to the end face of the guide post 46 through a second elastic member 410. A pin slot adapted to the pin rod 411 is provided on the side wall of the positioning rod 45. When the positioning rod 45 is withdrawn from the inside of the positioning groove, the pin rod 411 happens to be aligned with the pin groove on the side wall of the positioning rod 45. At this time, under the action of the second elastic member 410, the pin rod 411 automatically enters into the pin groove. The pin rod 411 then fixes the positioning rod 45 through the pin groove. When cleaning impurities such as dust and lint on the surface of the filter mesh cylinder 10, it is not necessary for the staff to always pull the positioning rod 45, which saves manpower. When the impurities such as dust and lint on the surface of the filter mesh cylinder 10 are cleaned up, the staff withdraws the pin rod 411 from the inside of the pin groove through the second stopper 48, so that the positioning rod 45 can automatically reset and enter into the positioning groove.

[0029] Please refer to Figure 3 and Figure 4 As shown in FIGS. and, the back-blowing mechanism 5 includes an air cavity 52 arranged inside the partition plate 12. A plurality of air blowing pipes 51 are fixed on the side wall of the partition plate 12. The air blowing pipes 51 are located on the side of the partition plate 12 away from the hollow tube 2. The air blowing pipes 51 are all communicated with the air cavity 52. An air inlet assembly is connected to the air cavity 52, and the air inlet assembly is used for ventilating the inside of the air cavity 52; During the rotation of the filter mesh cylinder 10, the air inlet assembly ventilates the inside of the air cavity 52, and the gas is discharged from the air cavity 52 through the air blowing pipes 51. As the filter mesh cylinder 10 rotates, the gas discharged from the air blowing pipes 51 will pass over the surface of the filter mesh cylinder 10, thereby playing a back-blowing role on the filter mesh cylinder 10, and effectively blowing off impurities such as dust and lint adsorbed inside the mesh holes, ensuring the cleaning effect of the filter mesh cylinder 10.

[0030] Please refer to Figure 1 and Figure 6 As shown in FIGS. and, the air inlet assembly includes a support plate 53 fixed on the outer end face of the dust removal housing 1. A pneumatic cylinder 56 is fixed on the side wall of the support plate 53. A piston 57 is slidably connected inside the pneumatic cylinder 56. The piston 57 is fixedly connected with a slide rod 58. The slide rod 58 penetrates through the end face of the pneumatic cylinder 56 and is slidably connected with the end face of the pneumatic cylinder 56. One end of the slide rod 58 away from the piston 57 is fixed with a pressing plate 510. The pressing plate 510 is fixedly connected with the end face of the pneumatic cylinder 56 through a third elastic member 59. A push block 511 capable of pressing the pressing plate 510 is fixed outside the rotating rod 13. An air inlet pipe 54 and an air outlet pipe 55 are connected to the side wall of the pneumatic cylinder 56 on the side of the piston 57 away from the slide rod 58. The air outlet pipe 55 penetrates through the dust-proof housing and is communicated with the air cavity 52; While the rotating rod 13 rotates, it also drives the push block 511 to rotate. When the push block 511 rotates to a certain extent, the push block 511 squeezes the pressing plate 510. The pressing plate 510 drives the piston 57 to squeeze the gas inside the air pressure cylinder 56 through the sliding rod 58, so that the gas inside the air pressure cylinder 56 enters the air cavity 52 through the air outlet pipe 55. When the squeezing degree of the push block 511 on the pressing plate 510 decreases, the pressing plate 510 drives the piston 57 to reset through the sliding rod 58 under the action of the third elastic member 59. A negative pressure is formed inside the air pressure cylinder 56, and the outside gas enters the air pressure cylinder 56 through the air inlet pipe 54. This cycle repeats, enabling the gas to continuously backflush the surface of the filter screen cylinder 10, thereby improving the cleaning effect on the filter screen cylinder 10. The third elastic member 59 can be a spring. In addition, in order to make the air flow unidirectionally, one-way valves are provided on both the air inlet pipe 54 and the air outlet pipe 55. And in order to ensure that the sliding rod 58 can smoothly drive the piston 57 to move, a plurality of pressure relief holes are provided on the side of the air pressure cylinder 56 close to the pressing plate 510.

[0031] Working principle: When the dust removal device is in use, one end of the hollow tube 2 far away from the dust removal housing 1 is connected to the air outlet on the oven. Under the action of the blower, impurities such as dust and lint on the fabric will enter the interior of the hollow tube 2 through the air outlet and flow into the interior of the dust removal housing 1 along the air flow. Under the limitation of the limiting ring 9 and the scraper 8, the air flow can only pass through the side wall of the filter mesh cylinder 10 and enter the interior of the filter mesh cylinder 10. Dust, lint and other impurities are filtered on the outer surface of the filter mesh cylinder 10. At the same time, under the limitation of the inner partition 12 of the mesh cylinder, the air flow will pass through the air outlet 7 on the side wall of the dust removal housing 1 and be discharged to the outside, thus achieving the purpose of dust removal. When there are too many dust, lint and other impurities on the outer wall of the filter mesh cylinder 10 affecting the air outlet effect, the positioning rod 45 is pulled out from the positioning groove. Without the positioning of the positioning rod 45, at this time, when the air flow passes through the interior of the hollow tube 2, it will cyclically impact on the surfaces of multiple fan blades 44, so that the fan blades 44 drive the transmission rod 41 to rotate. The transmission rod 41 drives the rotating rod 13 to rotate through the belt 43 and the pulley 42. On the one hand, the rotating rod 13 drives the gear 31 to rotate, and drives the rotating ring 11 to rotate through the meshing of the gear 31 and the toothed ring 32, thereby driving the filter mesh cylinder 10 to rotate. While the filter mesh cylinder 10 is rotating, the scraper 8 inside the dust removal housing 1 will scrape the dust, lint and other impurities on the outer wall of the filter mesh cylinder 10, thus preventing the dust, lint and other impurities from accumulating on the surface of the filter mesh cylinder 10. On the other hand, the rotating rod 13 drives the push block 511 to rotate. When the push block 511 rotates to a certain extent, the push block 511 squeezes the pressing plate 510. The pressing plate 510 drives the piston 57 to squeeze the gas inside the air pressure cylinder 56 through the sliding rod 58, so that the gas inside the air pressure cylinder 56 enters the air cavity 52 inside through the air outlet pipe 55. When the squeezing degree of the push block 511 on the pressing plate 510 decreases, the piston 57 automatically resets, and a negative pressure is formed inside the air pressure cylinder 56. The outside gas then enters the air pressure cylinder 56 through the air inlet pipe 54. In this way, the gas can continuously enter the air cavity 52 inside the partition 12 and finally be discharged from the blowing pipe 51. As the filter mesh cylinder 10 rotates, the gas discharged from the blowing pipe 51 will pass over the surface of the filter mesh cylinder 10, thereby playing a back-blowing role on the filter mesh cylinder 10, and can effectively blow off the dust, lint and other impurities adsorbed inside the mesh holes, further improving the cleaning effect of the filter mesh cylinder 10, and there is no need for manual cleaning of the dust, lint and other impurities on the surface of the filter mesh cylinder 10, saving manpower.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust removal device for filtering and guiding belt of a stenter setting machine, comprising a dust removal housing; characterized in that: A hollow tube is connected to the side wall of the dust collector shell, and a filter cylinder is arranged inside the dust collector shell. Rotating rings are fixed at both ends of the filter cylinder, and one end of the rotating ring away from the filter cylinder fits with the end surface inside the dust collector shell. Symmetrically distributed limiting rings are fixed on the inner wall of the dust collector shell, and the inner walls of the two limiting rings are slidably connected to the outer walls of the two rotating rings respectively. Symmetrically distributed scrapers are fixed between the limiting rings, and one end of the scraper close to the filter cylinder is slidably connected to the outer wall of the filter cylinder, and the end of the scraper away from the filter cylinder is fixedly connected to the inner wall of the dust collector shell. Symmetrically distributed impurity discharge ports are arranged on both sides of the scraper and at the bottom of the dust collector shell. The inner wall of the filter cylinder is provided with a partition, two relatively distributed side walls of the partition are slidably connected to the inner wall of the filter cylinder, and the other two relatively distributed side walls of the partition are fixedly connected to the end face of the interior of the dust collector shell. The partition is close to the side of the hollow tube, the inner side of the filter cylinder, and one end face of the dust collector shell. A rotating rod passes through the other end face of the dust collector shell, and the rotating rod is connected to a driving mechanism, a transmission mechanism and a back-blowing mechanism. The driving mechanism is used to drive the rotating rod to rotate, and when the rotating rod rotates, the rotating rod drives the rotating ring to rotate through the transmission mechanism, and back-blows the filter cylinder through the back-blowing mechanism.

2. The dust removal device for filtering and guiding belt of a stenter setting machine according to claim 1 is characterized in that: The transmission mechanism comprises a gear fixedly connected to the end of the rotating rod, wherein a gear ring is fixed to the outside of one of the rotating rings, and the gear ring is meshed with the gear.

3. The dust removal device for filtering and guiding belt of a stenter setting machine according to claim 1, characterized in that: The driving mechanism includes a transmission rod passing through the side wall of the hollow tube, and pulleys are fixed to the outside of the transmission rod and the rotating rod. The pulleys are connected by belt transmission. Fan blades distributed in a circular shape are fixed inside the hollow tube and outside the transmission rod, wherein the transmission rod is connected to a fixing component, and the fixing component is used to fix the transmission rod.

4. The dust removal device for filtering and guiding belt of a stenter setting machine according to claim 3 is characterized in that: The fixing assembly includes a guide column fixed to the outside of the hollow tube, a positioning rod passing through the inside of the guide column, wherein a positioning groove adapted to the positioning rod is provided on the outside of the rotating rod, one end of the positioning rod is located inside the positioning groove, and a first stopper is fixed to the other end of the positioning rod, and the first stopper is connected to the side wall of the guide column through a first elastic member.

5. The dust removal device for filtering and guiding belt of a stenter setting machine according to claim 4, characterized in that: A pin rod penetrates the end of the guide column away from the hollow tube, a second stopper is fixed to the end of the pin rod, and the second stopper is connected to the end face of the guide column through a second elastic member, wherein a pin groove matching the pin rod is provided on the side wall of the positioning rod.

6. The dust removal device for filtering and guiding belt of a stenter setting machine according to claim 1, characterized in that: The back-blowing mechanism includes an air cavity arranged inside the partition, and a plurality of air blowing pipes are fixed on the side wall of the partition. The air blowing pipes are located on the side of the partition away from the hollow tube. The air blowing pipes are all connected to the air cavity, wherein the air cavity is connected to an air intake assembly, and the air intake assembly is used to ventilate the inside of the air cavity.

7. A dust removal device for filtering and guiding belt of a stenter setting machine according to claim 6, characterized in that: The cam is secured to the side of the air intake port and is adapted to engage the piston in the cam, wherein the piston is secured to the side of the air intake port and is in communication with the piston in the cam.

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