Double-barrel cloth bag type dust collector for wood-working machinery

Abstract

The invention provides a double-barrel cloth bag type dust collector for wood-working machinery, which belongs to the technical field of dust removal equipment and comprises an induced draft fan, a connecting sleeve, a dust collecting cloth bag and a dust filtering cloth bag. Wherein an impeller corresponding to the air inlet is arranged in the center of the interior of the connecting sleeve, the air inlet direction of the air inlet is arranged to be tangent to the rotating direction of the impeller, so that the impeller can be driven to rotate, a sweeping frame is arranged in the dust filtering cloth bag, a center shaft is arranged in the center of the bottom end of the sweeping frame, and the dust filtering cloth bag is arranged in the center shaft. And the central shaft is connected with a rotating shaft of the impeller, so that the cleaning frame can synchronously rotate with the impeller. The impeller is arranged in the connecting sleeve, the cleaning frame is arranged in the dust filtering cloth bag, high-speed airflow generated during dust collection is used for driving the impeller to rotate, the rotating impeller drives the cleaning frame to rotate synchronously, the cleaning frame in a selective assembly state can clean the inner wall of the dust filtering cloth bag, and the dust filtering cloth bag does not need to be dismounted by shutdown in the cleaning process; and additional power is not needed, so that energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of dust removal equipment, and particularly relates to a double-cylinder cloth bag type dust collector for woodworking machinery. BACKGROUND

[0002] Woodworking machinery includes sawing machinery, planing machinery, turning machinery, sanding machinery and edge sealing equipment. During operation, the above-mentioned machinery will generate a large amount of wood residue, dust and the like, and a dust collector needs to be used for dust collection. At present, the widely used dust collection equipment for woodworking machinery is a cloth bag type dust collector.

[0003] The double-cylinder cloth bag type dust collector is a device that generates negative pressure (vacuum) through a motor-driven fan, thereby sucking in air containing dust, and collects and stores the dust by using a cloth bag as a main filter medium. However, during use, dust will adhere to the cloth bag, resulting in a decrease in the air permeability of the cloth bag, and thus the negative pressure suction force generated by the fan is reduced, affecting the dust collection effect. At present, the dust collector of this type does not have an online self-cleaning capability, and needs to be regularly stopped for cleaning of the filter bag, which causes the matching production equipment to be simultaneously stopped, thereby affecting the overall production efficiency. SUMMARY

[0004] In view of the above, in order to overcome the defects of the prior art, the purpose of the present application is to provide a double-cylinder cloth bag type dust collector for woodworking machinery, so as to at least partially solve the problems raised in the background art.

[0005] The technical scheme adopted by the present application is as follows: the present application provides a double-cylinder cloth bag type dust collector for woodworking machinery, comprising: an air induction fan, an input end of which is provided with an air induction pipe, and an output end of which is provided with an air exhaust pipe, the air exhaust pipe comprising two air exhaust ends; two connecting sleeve pipes, one side of each of the connecting sleeve pipes being provided with an air inlet, the connecting sleeve pipes being vertically connected to the air exhaust pipe, and the air exhaust ends of the air exhaust pipe being connected to the air inlets; a dust collecting cloth bag and a dust filtering cloth bag being respectively connected to the bottom end and the top end of the connecting sleeve pipe; wherein, a impeller corresponding to the air inlet is arranged in the inner center of the connecting sleeve pipe, the air inlet is arranged in such a way that the air inlet direction is tangent to the rotation direction of the impeller, so that the impeller can be driven to rotate, a cleaning frame is arranged in the dust filtering cloth bag, a central shaft is arranged in the bottom center of the cleaning frame, and the central shaft is connected to the rotating shaft of the impeller, so that the cleaning frame can rotate synchronously with the impeller.

[0006] Further, the blades of the impeller are arranged perpendicularly to the rotation direction of the impeller, a residue blocking plate is arranged above the blades of the impeller, and the residue blocking plate is arranged perpendicularly to the blades of the impeller.

[0007] Further, one side of the cleaning frame towards the inner wall of the dust filter bag is provided with a cleaning brush.

[0008] Further, the inner side of the cleaning frame is provided with a supporting rod, both ends of the supporting rod are connected to the upper and lower ends of the cleaning frame respectively.

[0009] Further, one side of the connecting sleeve is provided with a speed regulating unit, one end of the speed regulating unit is in contact with the central shaft, and the speed regulating unit is arranged to be able to exert resistance to the rotation of the central shaft.

[0010] Further, the speed regulating unit comprises a connecting rod and a pressing block, the pressing block is fixed at one end of the connecting rod, the pressing block is in contact with the central shaft, and the other end of the connecting rod is provided with an adjusting mechanism capable of adjusting the pressure exerted by the pressing block on the central shaft.

[0011] Further, the adjusting mechanism comprises a threaded rod and a threaded pipe, the threaded pipe is fixed on the connecting sleeve, and the threaded rod is connected in the threaded pipe.

[0012] Further, one end of the threaded rod away from the connecting rod extends to the outside of the connecting sleeve and is connected with a hand wheel.

[0013] Further, the inner side of the connecting sleeve is fixed with a supporting frame, a bearing is arranged at the middle position of the supporting frame, and the central shaft is connected to the supporting frame through the bearing.

[0014] Further, one end of the exhaust pipe close to the air guide fan is provided with an ion wind rod, the ion wind rod is connected with an external ion generator, and the output end of the ion wind rod extends to the inside of the exhaust pipe.

[0015] Beneficial effects: 1. By arranging the impeller in the connecting sleeve and the cleaning frame in the dust filter bag, the high-speed airflow generated during dust collection drives the impeller to rotate, and the rotating impeller drives the cleaning frame to rotate synchronously. The cleaning frame in the selected state can clean the inner wall of the dust filter bag. The cleaning process does not need to stop and disassemble the dust filter bag, and does not need additional power, saving energy consumption.

[0016] 2. The blades of the impeller can block the particles in the airflow, which can slow down after hitting the blades of the impeller and directly fall into the dust collecting bag, reducing the content of particles in the airflow, thereby reducing the dust filtering burden of the dust filter bag.

[0017] 3、By setting the speed regulating unit, the rotation of the central shaft can be resisted by the speed regulating unit, and the resistance can be adjusted, according to the power of the air blower, the rotation resistance of the central shaft can be adjusted in real time, so as to maintain the rotation speed of the cleaning frame, avoid too fast or too slow rotation, maintain the cleaning ability of the cleaning frame, and avoid the wear of the dust filter bag caused by too fast rotation of the cleaning frame. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structure diagram of a double-cylinder cloth bag type dust collector for woodworking machinery is provided for the embodiment of the present application. Figure 2 An installation position diagram of an impeller and a cleaning frame in a double-cylinder cloth bag type dust collector for woodworking machinery is provided for the embodiment of the present application. Figure 3 An installation position diagram of a speed regulating unit in a double-cylinder cloth bag type dust collector for woodworking machinery is provided for the embodiment of the present application. Figure 4 A structure diagram of an impeller in a double-cylinder cloth bag type dust collector for woodworking machinery is provided for the embodiment of the present application. Figure 5 A structure diagram of a cleaning frame in a double-cylinder cloth bag type dust collector for woodworking machinery is provided for the embodiment of the present application. Figure 6 A Figure 5 An enlarged diagram of position A in the above figure.

[0019] 1, air blower; 11, air inlet pipe; 12, air outlet pipe; 2, connecting sleeve; 201, air inlet; 3, dust collecting bag; 4, dust filter bag; 5, central shaft; 51, support frame; 6, impeller; 61, slag baffle; 7, cleaning frame; 71, cleaning brush; 72, support rod; 8, speed regulating unit; 81, connecting rod; 82, pressing block; 83, threaded rod; 84, threaded pipe; 85, hand wheel; 9, ion wind rod.

[0020] The accompanying drawings are used to provide a further understanding of the embodiments, and constitute a part of the specification, which are used together with the embodiments to explain and are not used to limit the embodiments. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection.

[0022] In the description of the embodiments, it needs to be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments.

[0023] In combination Figure 1 As shown, the wood working machine double cylinder cloth bag type dust collector provided by the embodiment of the present application comprises an air induction fan 1, a connecting sleeve 2, a dust collecting cloth bag 3 and a dust filtering cloth bag 4.

[0024] The input end of the air induction fan 1 is provided with an air induction pipe 11. When the air induction fan 1 is started, a negative pressure suction force is generated at the pipe opening of the air induction pipe 11. The pipe opening of the air induction pipe 11 is externally connected with a hose. The dust suction opening of the air induction pipe 11 is extended to the area to be cleaned through the externally connected hose.

[0025] The output end of the air induction fan 1 is provided with an air exhaust pipe 12. The air exhaust pipe 12 is provided with one air inlet end and two air outlet ends. The air inlet end of the air exhaust pipe 12 is connected to the output end of the air induction fan 1. The two air outlet ends of the air exhaust pipe 12 are each connected with a vertically arranged connecting sleeve 2. One side of the connecting sleeve 2 is provided with an air inlet 201. The air outlet end of the air exhaust pipe 12 is connected to the air inlet 201.

[0026] Further, the bottom end and the top end of the connecting sleeve 2 are respectively connected with the dust collecting cloth bag 3 and the dust filtering cloth bag 4. After the dust is input into the connecting sleeve 2, the dust is filtered by the dust collecting cloth bag 3 and the dust filtering cloth bag 4 under the action of the air pressure. The dust finally falls into the dust collecting cloth bag 3. The setting of the dust collecting cloth bag 3 and the dust filtering cloth bag 4 can increase the filtering area.

[0027] In this way, when the dust is sucked, the air induction fan 1 is started. Under the action of the air induction fan 1, the negative pressure suction force is generated at the hose pipe opening connected with the air induction pipe 11. The dust is sucked. The sucked dust is transported into the two connecting sleeves 2 through the air exhaust pipe 12 and is filtered by the dust collecting cloth bag 3 and the dust filtering cloth bag 4 on the connecting sleeve 2. The dust finally falls into the dust collecting cloth bag 3. The air is discharged through the dust collecting cloth bag 3 and the dust filtering cloth bag 4.

[0028] In combination Figure 2 and Figure 3 As shown, the inside center of the connecting sleeve 2 is provided with an impeller 6 corresponding to the air inlet 201. The air inlet direction of the air inlet 201 is tangent to the rotating direction of the impeller 6. When the air induction fan 1 is started to suck the dust, the air flow input by the air inlet 201 acts on one side of the impeller 6. Under the action of the air flow, the impeller 6 can be driven to rotate.

[0029] Further, the dust filter bag 4 is provided with a cleaning frame 7, the bottom end of the cleaning frame 7 is provided with a central shaft 5, the central shaft 5 is connected with the rotating shaft of the impeller 6, when the impeller 6 is driven to rotate, the impeller 6 can drive the cleaning frame 7 to rotate synchronously through the central shaft 5, with the rotation of the cleaning frame 7, the cleaning frame 7 can scrape and clean the inner wall of the dust filter bag 4 in a cycle, so as to maintain the filtering efficiency of the dust filter bag 4, and during the cleaning process, the dust filter bag 4 does not need to be disassembled, and no additional power is needed, so the energy consumption is saved.

[0030] It should be noted that the rotating diameter of the cleaning frame 7 is the same as the inner diameter of the dust filter bag 4 after inflation, so that the cleaning frame 7 in the rotating state can always be in contact with the inner wall of the dust filter bag 4 and be cleaned.

[0031] In a specific embodiment, the inner side of the connecting sleeve 2 is fixed with a support frame 51, the middle position of the support frame 51 is provided with a bearing, and the central shaft 5 is connected to the support frame 51 through the bearing, so as to support the central shaft 5, the impeller 6 and the cleaning frame 7.

[0032] In this way, during the dust collection, the dust-containing airflow is input into the inside of the connecting sleeve 2 through the air inlet 201 and acts on the impeller 6, so that the impeller 6 can be driven to rotate under the action of the wind, when the impeller 6 is driven to rotate, the impeller 6 can drive the cleaning frame 7 to rotate synchronously through the central shaft 5, with the rotation of the cleaning frame 7, the cleaning frame 7 can scrape and clean the inner wall of the dust filter bag 4 in a cycle, so as to maintain the filtering efficiency of the dust filter bag 4, and during the cleaning process, the dust filter bag 4 does not need to be disassembled, and no additional power is needed, so the energy consumption is saved.

[0033] As shown in Figure 5 and Figure 6 , the side of the cleaning frame 7 facing the inner wall of the dust filter bag 4 is provided with a cleaning brush 71, when the cleaning frame 7 rotates, the cleaning brush 71 is in contact with the inner wall of the dust filter bag 4 to clean the inner wall of the dust filter bag 4, so as to improve the cleaning effect.

[0034] Further, the cleaning frame 7 is provided in an L shape, one end of the long side is in contact with the inner wall of the dust filter bag 4 for cleaning, and the other end of the short side is connected to the central shaft 5, the inner side of the cleaning frame 7 is provided with a support rod 72, the two ends of the support rod 72 are respectively connected to the upper and lower ends of the cleaning frame 7, that is, are respectively connected to the long side and the short side (as shown in Figure 5 ), so as to play a role in strengthening the support and avoiding deformation of the cleaning frame 7 when it rotates.

[0035] As shown in Figure 4As shown, the blades of the impeller 6 are arranged perpendicularly to the rotation direction of the impeller 6, the airflow input from the air inlet 201 acts on the blades of the impeller 6, the blades of the impeller 6 can play a blocking role, and the particulate matters in the airflow can slow down after impacting the blades of the impeller 6 and directly fall into the dust collecting bag 3, thereby reducing the content of particulate matters in the airflow and reducing the dust filtering burden of the dust filtering bag 4, and the airflow can be dispersed in all directions.

[0036] Further, a slag baffle 61 is arranged above the blades of the impeller 6, and the slag baffle 61 is arranged perpendicularly to the blades of the impeller 6. When the airflow acts on the blades of the impeller 6 and is dispersed in all directions, the upward airflow is blocked again by the slag baffle 61, further blocking the particles in the airflow, and the particulate matters directly fall into the dust collecting bag 3 after slowing down.

[0037] In combination Figure 1 As shown, the ion wind rod 9 is arranged on the outer side of the one end of the exhaust pipe 12 close to the induced draft fan 1, the ion wind rod 9 is connected with an external ion generator, and the output end of the ion wind rod 9 extends into the exhaust pipe 12. During the dust collection operation, the ion wind rod 9 sends ion wind into the exhaust pipe 12, the ion wind is sent to the dust collecting bag 3 and the dust filtering bag 4 along with the airflow, removes static electricity generated by dust friction, avoids the phenomenon that dust is difficult to clean due to static adsorption, and eliminates static electricity to effectively prevent dust explosion.

[0038] In combination Figure 2 , Figure 3 and Figure 4 As shown, the speed regulating unit 8 is arranged on one side of the connecting sleeve 2, one end of the speed regulating unit 8 is in contact with the central shaft 5, and the speed regulating unit 8 is arranged to apply resistance to the rotation of the central shaft 5, thereby adjusting the rotation speed of the cleaning frame 7.

[0039] In specific embodiments, the speed regulating unit 8 includes a connecting rod 81 and a pressing block 82, the pressing block 82 is fixed on one end of the connecting rod 81, the pressing block 82 is in contact with the central shaft 5, and the other end of the connecting rod 81 is provided with an adjusting mechanism, the adjusting mechanism can adjust the pressure applied by the pressing block 82 to the central shaft 5, thereby adjusting the rotation resistance of the central shaft 5.

[0040] Further, the adjusting mechanism comprises a threaded rod 83 and a threaded tube 84, the threaded tube 84 is fixed on the connecting sleeve 2, the threaded rod 83 is connected in the threaded tube 84, the threaded rod 83 is fixed on one end of the connecting rod 81, and the connecting rod 81 and the threaded rod 83 are coaxially arranged, by rotating the threaded rod 83, the threaded rod 83 can move axially by the action of the thread, and by adjusting the rotating direction, the threaded rod 83 moves in different directions, when the threaded rod 83 moves towards the center shaft 5, the pressure applied by the connecting rod 81 to the pressing block 82 increases, correspondingly, the pressure applied by the pressing block 82 to the center shaft 5 increases, and the rotating resistance of the center shaft 5 increases, when the threaded rod 83 moves away from the center shaft 5, the pressure applied by the connecting rod 81 to the pressing block 82 decreases, correspondingly, the pressure applied by the pressing block 82 to the center shaft 5 decreases, and the rotating resistance of the center shaft 5 decreases.

[0041] Further, the threaded rod 83 extends to the outside of the connecting sleeve 2 away from one end of the connecting rod 81, and is connected with a hand wheel 85, the operator can rotate the threaded rod 83 through the hand wheel 85, and the rotating torque is increased by using the hand wheel 85 with a larger diameter, thereby reducing the force required to rotate the threaded rod 83.

[0042] Therefore, in the process of dust collection, the threaded rod 83 is rotated by the hand wheel 85, the pressure applied by the pressing block 82 to the center shaft 5 is adjusted, and the rotating resistance of the center shaft 5 is adjusted, so that the rotating speed of the cleaning frame 7 is adjustable, when the dust collection amount is large and the induced draft fan 1 operates at high power, the threaded rod 83 is moved towards the center shaft 5 to increase the rotating resistance of the center shaft 5, so as to avoid the rotating speed of the cleaning frame 7 being too fast due to the increase of the air inlet speed, when the dust collection amount is small and the induced draft fan 1 operates at low power, the threaded rod 83 is moved away from the center shaft 5 to reduce the rotating resistance of the center shaft 5, so as to avoid the rotating speed of the cleaning frame 7 being too slow or unable to rotate due to the weakening of the air inlet speed.

[0043] The working principle of the present application is as follows: during dust collection, the induced draft fan 1 is started, under the action of the induced draft fan 1, negative pressure suction is generated at the hose nozzle connected with the induced draft pipe 11, dust is sucked, the sucked dust is transported into the two connecting sleeves 2 through the exhaust pipe 12, and is filtered through the dust collecting bag 3 and the dust filtering bag 4 on the connecting sleeve 2, and finally falls into the dust collecting bag 3, while the air is discharged through the dust collecting bag 3 and the dust filtering bag 4.

[0044] When the dust-containing air flow enters the inside of the connecting sleeve 2 through the air inlet 201, the air flow acts on the impeller 6, and under the action of the wind force, the impeller 6 can be driven to rotate, when the impeller 6 is driven to rotate, the impeller 6 can drive the cleaning frame 7 to rotate synchronously through the central shaft 5, with the rotation of the cleaning frame 7, the cleaning frame 7 can be scraped and cleaned on the inner wall of the dust filtering bag 4 in circulation, and the filtering efficiency of the dust filtering bag 4 is maintained, and during the cleaning, the dust filtering bag 4 does not need to be disassembled during shutdown, and no additional power is required, thereby saving energy consumption.

[0045] By rotating the threaded rod 83 through the hand wheel 85, the pressure of the pressing block 82 on the central shaft 5 is adjusted, and then the rotation resistance of the central shaft 5 is adjusted, so that the rotating speed of the cleaning frame 7 is adjustable, when the dust suction amount is large and the induced draft fan 1 is high-power operation, the threaded rod 83 is moved towards the central shaft 5, the rotation resistance of the central shaft 5 is increased, and the rotation speed of the cleaning frame 7 is prevented from being too fast due to the increase of the air inlet speed, when the dust suction amount is small and the induced draft fan 1 is low-power operation, the threaded rod 83 is moved away from the central shaft 5, the rotation resistance of the central shaft 5 is reduced, and the rotation speed of the cleaning frame 7 is prevented from being too slow or unable to rotate due to the weakening of the air inlet speed.

[0046] When the dust suction operation is performed, the ion wind rod 9 delivers ion wind into the exhaust pipe 12, and the ion wind is delivered to the dust collecting bag 3 and the dust filtering bag 4 along with the air flow, so as to remove static electricity generated by dust friction, avoid the phenomenon that dust is difficult to clean due to static adsorption, and eliminate static electricity to effectively prevent dust explosion.

[0047] In combination with the above embodiments: by arranging the impeller 6 in the connecting sleeve 2 and arranging the cleaning frame 7 in the dust filtering bag 4, the high-speed air flow generated during dust suction drives the impeller 6 to rotate, and the rotating impeller 6 drives the cleaning frame 7 to rotate synchronously, the cleaning frame 7 in the selected state can clean the inner wall of the dust filtering bag 4, the cleaning process does not need to disassemble the dust filtering bag 4 during shutdown, and no additional power is required, thereby saving energy consumption.

[0048] By arranging the speed regulation unit 8, the speed regulation unit 8 can apply resistance to the rotation of the central shaft 5, and the applied resistance is adjustable, according to the power of the induced draft fan 1, the rotation resistance of the central shaft 5 can be adjusted in real time, and then the rotating speed of the cleaning frame 7 is maintained, so as to avoid that the rotating speed of the cleaning frame 7 is too fast or too slow, the cleaning ability of the cleaning frame 7 is maintained, and the dust filtering bag 4 is prevented from being worn due to the too fast rotating speed of the cleaning frame 7.

[0049] It is to be noted that, as used in this document, the term "indicia" is intended to encompass any indicia, whether visible or not, and whether or not detectable by the human senses. It is to be understood that the terms "first" and "second" and the like are used merely to distinguish one element from another, and are not intended to require or imply that the elements so designated are in any way either sequential or singular. Furthermore, the terms "comprise", "comprises", "comprising", "include", "includes", "including" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0050] The above description of the embodiments has been presented for the purpose of illustration and description, and is not intended to limit the disclosure to the precise forms described. The above description is merely one form of the embodiments, and the actual structure is not limited to this. In general, if a person skilled in the art is inspired by the above description, without departing from the inventive concept, similar structural forms and embodiments can be designed without creative design, and all should belong to the protection scope.

Claims

1. A double-tube bag vacuum cleaner for woodworking machinery, characterized in that, include: An induced draft fan (1) has an induced draft pipe (11) at its input end and an exhaust pipe (12) at its output end. The exhaust pipe (12) includes two exhaust ends. Two connecting sleeves (2), one side of the connecting sleeve (2) is provided with an air inlet (201), the connecting sleeve (2) is vertically connected to the exhaust pipe (12), and the exhaust end of the exhaust pipe (12) is connected to the air inlet (201); The bottom and top ends of the connecting sleeve (2) are respectively connected to a dust collection bag (3) and a dust filter bag (4). The connecting sleeve (2) has an impeller (6) at its center that corresponds to the air inlet (201), and the air inlet (201) is tangent to the rotation direction of the impeller (6) so that the impeller (6) can be driven to rotate. The dust filter bag (4) has a cleaning frame (7) inside, and the bottom center of the cleaning frame (7) has a central shaft (5) connected to the rotating shaft of the impeller (6) so that the cleaning frame (7) can rotate synchronously with the impeller (6).

2. The double-tube bag vacuum cleaner for woodworking machinery according to claim 1, characterized in that: The blades of the impeller (6) are arranged perpendicular to its own rotation direction, and a baffle plate (61) is provided above the blades of the impeller (6), and the baffle plate (61) is arranged perpendicular to the blades of the impeller (6).

3. The double-tube bag vacuum cleaner for woodworking machinery according to claim 1, characterized in that: The cleaning frame (7) is provided with a cleaning brush (71) on the side facing the inner wall of the dust filter bag (4).

4. The double-tube bag vacuum cleaner for woodworking machinery according to claim 1, characterized in that: The cleaning frame (7) has a support rod (72) on its inner side, and the two ends of the support rod (72) are respectively connected to the upper and lower ends of the cleaning frame (7).

5. The double-tube bag vacuum cleaner for woodworking machinery according to claim 1, characterized in that: A speed regulating unit (8) is provided on one side of the connecting sleeve (2). One end of the speed regulating unit (8) is in contact with the central shaft (5). The speed regulating unit (8) is configured to apply resistance to the rotation of the central shaft (5).

6. The double-tube bag vacuum cleaner for woodworking machinery according to claim 5, characterized in that: The speed regulating unit (8) includes a connecting rod (81) and a pressure block (82). The pressure block (82) is fixed at one end of the connecting rod (81) and contacts the central shaft (5). The other end of the connecting rod (81) is provided with an adjusting mechanism that can adjust the pressure applied by the pressure block (82) to the central shaft (5).

7. The double-tube bag vacuum cleaner for woodworking machinery according to claim 6, characterized in that: The adjusting mechanism includes a threaded rod (83) and a threaded tube (84), the threaded tube (84) being fixed on the connecting sleeve (2), and the threaded rod (83) being connected inside the threaded tube (84).

8. The double-tube bag vacuum cleaner for woodworking machinery according to claim 7, characterized in that: The threaded rod (83) extends from the end of the connecting rod (81) to the outside of the connecting sleeve (2) and is connected to a handwheel (85).

9. The double-tube bag vacuum cleaner for woodworking machinery according to claim 1, characterized in that: A support frame (51) is fixed on the inner side of the connecting sleeve (2). A bearing is provided at the middle position of the support frame (51), and the central shaft (5) is connected to the support frame (51) through the bearing.

10. The double-tube bag vacuum cleaner for woodworking machinery according to claim 1, characterized in that: An ion bar (9) is provided on the outer side of one end of the exhaust pipe (12) near the blower (1). The ion bar (9) is connected to an external ion generator, and the output end of the ion bar (9) extends into the exhaust pipe (12).

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