Movable dust removal device and use method

Abstract

The invention relates to the technical field of workshop dust removal, in particular to a movable dust removal device and a using method.The movable dust removal device comprises two adjacent steel stand columns for supporting in a workshop, the two steel stand columns are slidably connected with a dust removal cover through a lifting mechanism, and the air outlet end of the dust removal cover is fixedly connected with an exhaust pipe; the end, away from the dust removal cover, of the exhaust pipe is fixedly connected with a first corrugated pipe, the lifting mechanism comprises two trapezoidal lead screws, the two trapezoidal lead screws are rotationally connected to the two steel stand columns correspondingly, lifting blocks are further slidably connected to the two steel stand columns, lead screw nuts are arranged in the lifting blocks, and the two trapezoidal lead screws are connected to the two steel stand columns correspondingly. A trapezoid lead screw is installed on the lifting block, a lead screw nut is matched with the trapezoid lead screw, the lifting block is connected with the dust hood through an installation assembly, and a power assembly is installed on the ground and is in transmission connection with the trapezoid lead screw. The dust removal cover has the advantages that the flexibility of the dust removal cover is guaranteed, meanwhile, the height precision adjusting capacity is improved, operation is easy, and safety is high.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of workshop dust removal, in particular to a movable dust removal device and a use method. BACKGROUND

[0002] In the production process of a factory workshop, a large amount of dust is generated due to various processes and equipment raw materials, especially harmful gases are generated in processes such as welding; the health condition of the workshop staff is seriously threatened; at present, a fixed dust removal system or a cantilever dust collection cover is widely used in the factory workshop; the fixed system needs to be pre-paved with a pipeline network, and the installation cost is high, the flexibility is poor, and the system cannot adapt to the adjustment of equipment layout; although the cantilever dust collection cover can be swung in a small range, the covering height is fixed, and it is difficult to match workpieces or equipment of different heights.

[0003] Although the existing mobile dust removal vehicle (such as a small-sized dust collection equipment with universal wheels) can be flexibly shifted, there are obvious defects: 1. The dust collection cover height is fixed: it cannot be adapted to dust generation points (such as low welding tables vs. tall machine tools) of different heights; 2. The manual adjustment efficiency is low: the worker needs to manually move the dust collection cover for positioning, the operation is complicated, and there is a safety hazard; 3. Poor sealing: the distance between the cover opening and the dust source cannot be controlled, dust escapes, and the dust removal efficiency is unstable. SUMMARY

[0004] In order to improve the mobile flexibility and height precise adjustment capability of workshop dust removal, the application provides a movable dust removal device and a use method.

[0005] The movable dust removal device and the use method provided by the application adopt the following technical scheme: A movable dust removal device comprises two adjacent steel columns supported in a workshop, a dust removal cover is slidably connected to the two steel columns through a lifting mechanism, an air outlet end of the dust removal cover is fixedly connected with an exhaust pipe, a first corrugated pipe is fixedly connected to an end of the exhaust pipe away from the dust removal cover, the lifting mechanism comprises two trapezoidal screws, the two trapezoidal screws are respectively rotatably connected to the two steel columns, a lifting block is also slidably connected to the two steel columns, a screw nut is arranged in the lifting block, the screw nut cooperates with the trapezoidal screws, the lifting block is connected with the dust removal cover through a mounting assembly, a power assembly is installed on the ground, and the power assembly is in transmission connection with the trapezoidal screws.

[0006] By adopting the above technical scheme, the steel columns in the workshop are reasonably utilized, the dust removal cover is installed between the steel columns, and the trapezoidal screw and the lifting block are arranged to drive the dust removal cover to lift, so that the flexibility of the dust removal cover is ensured, and the height precise adjustment capability is improved, the operation is simple, and the safety is high; and since the friction angle of the trapezoidal thread is large, when the lead angle of the screw is smaller than the friction angle, self-locking effect is generated, which means that the trapezoidal screw cannot be reversely driven by the axial load without external driving force, that is, the risk of falling of the dust removal cover is greatly reduced.

[0007] Optionally, the power assembly comprises two first motors, both of which are installed on the ground and controlled by the same controller, a first bevel gear is connected to the output shaft of the first motor by means of a key, and a second bevel gear is fixedly connected to one end of the trapezoidal screw close to the first motor, and the second bevel gear is engaged with the first bevel gear.

[0008] By adopting the above technical scheme, when the dust removal cover is lifted, the controller controls the two first motors to start at the same time, the first motor drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the trapezoidal screw to rotate, the trapezoidal screw drives the lifting block to lift, and the lifting block drives the dust removal cover to lift, thereby realizing the adjustment of the height of the dust removal cover and making the control of the height more accurate.

[0009] Optionally, a wedge-shaped groove is formed in the side wall of the lifting block close to the dust removal cover, the mounting assembly comprises a wedge-shaped block, the wedge-shaped block is fixedly connected to the dust removal cover and is inserted into the wedge-shaped groove away from the dust removal cover, a first penetrating hole is formed in the top wall of the lifting block, a second penetrating hole is formed in the top wall of the wedge-shaped block, and a fixed pin is inserted into the first penetrating hole and the second penetrating hole.

[0010] By adopting the above technical scheme, the connection between the lifting block and the dust removal cover is realized by the wedge-shaped block and the fixed pin, and the installation and dismounting of the dust removal cover are more convenient, and the probability of dismounting inconvenience when the equipment is damaged is reduced.

[0011] Optionally, an auxiliary dust removal mechanism is further arranged on the exhaust pipe, the auxiliary dust removal mechanism comprises a gas rotary joint, the gas rotary joint is installed on the exhaust pipe, two connecting pipes are fixedly connected to the gas rotary joint, handheld dust collectors are installed on the ends of the connecting pipes away from the exhaust pipe through an adjusting assembly, a control valve is further installed on the exhaust pipe, and the control valve is located between the dust removal cover and the gas rotary joint.

[0012] By adopting the technical scheme, due to the aerodynamic characteristics, the flow rate of the wind speed at the center of the cover opening is much lower than that at the edge, thereby making the actual dust removal dead angle exist when dust removal is performed, and making the dust removal effect decrease; the hand-held dust remover is arranged to clean the dust removal dead angle manually, and the dust removal effect is better.

[0013] Optionally, the adjusting assembly comprises a second bellows, the second bellows is fixedly connected to the connecting pipe, and one end away from the connecting pipe is fixedly connected to the hand-held dust remover; a fixing ring is further fixedly connected to the outer side wall of the dust cover; a first annular groove is formed in the outer side wall of the fixing ring; a second annular groove is formed in the bottom wall of the first annular groove; two rotating blocks are slidably connected in the second annular groove; two rotating rods are slidably connected in the first annular groove; the two rotating rods are fixedly connected to the two rotating blocks; and one end away from the rotating blocks of the two rotating rods is connected to the two connecting pipes through clamping pieces respectively.

[0014] By adopting the technical scheme, the second bellows is arranged to adjust the length of the hand-held dust remover, and the dust removal range is increased; the rotating rods and the rotating blocks are arranged to rotate the hand-held dust remover, and the dust removal range of the hand-held dust remover is further increased.

[0015] Optionally, the clamping piece comprises a first arc-shaped clamping block, the first arc-shaped clamping block is fixedly connected to one end away from the rotating block of the rotating rod, a second arc-shaped clamping block is hingedly connected to one end away from the rotating rod of the first arc-shaped clamping block, and a fixing bolt is in threaded connection with a fixing nut in sequence through the first arc-shaped clamping block and the second arc-shaped clamping block.

[0016] By adopting the technical scheme, the first arc-shaped clamping block and the second arc-shaped clamping block are arranged to connect the rotating rod to the connecting pipe, and the fixing bolt and the fixing nut are arranged to make the connecting pipe more convenient to disassemble.

[0017] Optionally, a cleaning mechanism is further arranged on the dust cover, the cleaning mechanism comprises a first cleaning scraper, the first cleaning scraper is rotatably connected to the dust cover through a driving assembly and abuts against the inner wall of the dust cover, a second cleaning scraper is fixedly connected to one end of the first cleaning scraper close to the exhaust pipe, and the second cleaning scraper is located in the exhaust pipe and abuts against the inner wall of the exhaust pipe.

[0018] By adopting the technical scheme, the dust cover is the first component through which dust passes, and dust is easily adhered and accumulated in the dust cover; especially when oily, damp or fibrous dust is handled, the dust cover is easily blocked; the first cleaning scraper and the second cleaning scraper are arranged to clean the inner walls of the dust cover and the exhaust pipe, and the probability of blocking of the dust cover and the exhaust pipe is reduced.

[0019] Optionally, the driving assembly comprises a rotating gear ring, the rotating gear ring is rotationally connected to the end face of the dust cover away from the exhaust pipe through a connecting piece, the first cleaning scraper is fixedly connected to the inner side wall of the rotating gear ring, a fixed plate is further fixedly connected to the outer side wall of the dust cover, a second motor is fixedly connected to the fixed plate, a gear is keyed to the output shaft of the second motor, and the gear is engaged with the rotating gear ring.

[0020] By adopting the above technical scheme, when the first cleaning scraper and the second cleaning scraper are rotated, the second motor is started, the second motor drives the gear to rotate, the gear drives the rotating gear ring to rotate, the rotating gear ring drives the first cleaning scraper to rotate, and the first cleaning scraper drives the second cleaning scraper to rotate.

[0021] Optionally, a third annular groove is formed in the end face of the rotating gear ring close to the dust cover, a fourth annular groove is formed in the bottom wall of the third annular groove, the connecting piece comprises a plurality of connecting rods, the plurality of connecting rods are fixedly connected to the end face of the dust cover away from the exhaust pipe, a rotating wheel is rotationally connected to one end of the connecting rod away from the dust cover, and the rotating wheel is rotationally connected in the fourth annular groove.

[0022] By adopting the above technical scheme, the rotating wheel is provided to realize the rotation of the rotating gear ring, and the rotation of the first cleaning scraper and the second cleaning scraper is realized.

[0023] In a second aspect, the application provides a use method of a movable dust removal device, which adopts the following technical scheme: a use method of a movable dust removal device, comprising the following steps: Step 1: when dust removal is performed, a first motor is started according to the height of a dust removal position, the first motor drives a first bevel gear to rotate, the first bevel gear drives a trapezoidal lead screw to rotate through a second bevel gear, and the trapezoidal lead screw drives the dust cover to move to the dust removal position to perform dust removal through a lifting block; Step 2: when dust removal is performed on a dead angle, a handheld dust remover is manually pulled to the position of the dead angle, and the rotation rod and the second bellows are provided to make the moving range of the handheld dust remover wider; Step 3: when the dust cover and dust in the exhaust pipe are cleaned, a second motor is started, the second motor drives a gear to rotate, the gear drives a rotating gear ring to rotate, the rotating gear ring drives a first cleaning scraper to rotate, and the first cleaning scraper drives a second cleaning scraper to rotate, thereby realizing the cleaning of the dust cover and the dust in the exhaust pipe.

[0024] In summary, the application has the following beneficial technical effects: 1. Make reasonable use of the steel columns in the workshop, install dust hoods between the steel columns, and set up trapezoidal screws and lifting blocks to drive the dust hoods to rise and fall. This not only ensures the flexibility of the dust hoods but also improves the accuracy of height adjustment. The operation is simple and safe. Moreover, because the friction angle of the trapezoidal thread is large, when the lead angle of the screw is less than the friction angle, a self-locking effect will be generated. This means that without external driving force, the trapezoidal screw cannot be driven in the opposite direction by axial load, which greatly reduces the risk of the dust hood falling. 2. The wedge block and fixing pin enable the connection between the lifting block and the dust cover, and make the installation and disassembly of the dust cover more convenient, reducing the probability of inconvenient disassembly and assembly when the equipment is damaged; 3. Due to aerodynamic characteristics, the airflow velocity at the center of the hood opening is much lower than at the edges, resulting in dust collection dead zones and reduced dust collection efficiency; the handheld dust collector allows for manual cleaning of these dead zones, leading to better dust collection results. 4. The dust hood is the first part through which dust passes, and dust easily adheres to and accumulates inside it; especially when dealing with oily, moist, or fibrous dust, blockage is prone to occur; the setting of the first and second cleaning scrapers enables the cleaning of the inner walls of the dust hood and exhaust pipe, thereby reducing the probability of blockage of the dust hood and exhaust pipe. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the portable dust removal device in the embodiments of this application; Figure 2 This is a schematic diagram of the lifting mechanism in the embodiments of this application; Figure 3 For this application Figure 2 Enlarged view of section A; Figure 4 For this application Figure 2 Enlarged view of section B; Figure 5 This is a schematic diagram of the auxiliary dust removal mechanism in the embodiments of this application; Figure 6 This is a top view of the auxiliary dust removal mechanism in the embodiments of this application; Figure 7 For this application Figure 6 Enlarged view of section C; Figure 8 This is a cross-sectional view of the cleaning mechanism in an embodiment of this application; Figure 9 For this application Figure 8 Enlarged view of section D.

[0026] 1, steel column; 2, dust removal cover; 3, exhaust pipe; 4, first bellows; 5, lifting mechanism; 51, trapezoidal screw; 52, lifting block; 521, wedge-shaped groove; 53, power assembly; 531, first motor; 532, first bevel gear; 533, second bevel gear; 54, mounting assembly; 541, wedge-shaped block; 542, fixing pin; 6, cleaning mechanism; 61, first cleaning scraper; 62, second cleaning scraper; 63, driving assembly; 631, rotating gear ring; 632, fixed plate; 633, second motor; 634, gear; 635, third annular groove; 636, fourth annular groove; 64, connecting piece; 641, connecting rod; 642, rotating wheel; 7, auxiliary dust removal mechanism; 71, control valve; 72, gas rotary joint; 73, connecting pipe; 74, handheld dust remover; 75, adjusting assembly; 751, fixed ring; 752, rotating rod; 753, rotating block; 754, second bellows; 755, first annular groove; 756, second annular groove; 76, clamping piece; 761, first arc-shaped clamping block; 762, second arc-shaped clamping block; 763, fixing bolt; 764, fixing nut. DETAILED DESCRIPTION

[0027] The above description is made in conjunction with the accompanying drawings. Figures 1-9 The application is described in further detail.

[0028] In a first aspect, the embodiments of the application disclose a movable dust removal device.

[0029] Reference Figure 1 The movable dust removal device comprises two adjacent steel columns 1 supported in a workshop, a dust removal cover 2 is slidably connected to the two steel columns 1 through a lifting mechanism 5, an exhaust pipe 3 is fixedly connected to an air outlet end of the dust removal cover 2, a first bellows 4 is fixedly connected to an end of the exhaust pipe 3 away from the dust removal cover 2, and a cleaning mechanism 6 for cleaning dust is further installed on the dust removal cover 2.

[0030] The steel columns 1 in the workshop are reasonably utilized, the dust removal cover 2 is installed between the steel columns 1, and the lifting mechanism 5 is arranged to drive the dust removal cover 2 to lift, so that the flexibility of the dust removal cover 2 is ensured, and the height precise adjustment capability is improved, and the operation is simple and safe.

[0031] Reference Figure 2 and Figure 3The lifting mechanism 5 comprises two trapezoidal screws 51, the two trapezoidal screws 51 are rotationally connected to the two steel columns 1 respectively, the two steel columns 1 are also slidably connected with lifting blocks 52, the lifting blocks 52 are provided with screw nuts, the screw nuts are matched with the trapezoidal screws 51, the lifting blocks 52 are connected with the dust cover 2 through mounting assemblies 54, and a power assembly 53 is installed on the ground and is in transmission connection with the trapezoidal screws 51; the power assembly 53 comprises two first motors 531, the two first motors 531 are both installed on the ground and controlled by the same controller, a first bevel gear 532 is in key connection with an output shaft of the first motor 531, and a second bevel gear 533 is fixedly connected to one end of the trapezoidal screw 51 close to the first motor 531 and is in mesh with the first bevel gear 532.

[0032] When the dust cover 2 is lifted, the controller controls the two first motors 531 to start at the same time, the first motor 531 drives the first bevel gear 532 to rotate, the first bevel gear 532 drives the second bevel gear 533 to rotate, the second bevel gear 533 drives the trapezoidal screw 51 to rotate, the trapezoidal screw 51 drives the lifting block 52 to lift, and the lifting block 52 drives the dust cover 2 to lift, so that the height of the dust cover 2 is adjusted, the height control is more accurate, and since the friction angle of the trapezoidal thread is large, when the lead angle of the screw is smaller than the friction angle, self-locking effect is generated, that is, the trapezoidal screw 51 cannot be reversely driven by the axial load without external driving force, and the risk of falling of the dust cover 2 is greatly reduced.

[0033] With reference to Figure 4 The lifting block 52 is provided with a wedge-shaped groove 521 on a side wall close to the dust cover 2, the mounting assembly 54 comprises a wedge-shaped block 541, the wedge-shaped block 541 is fixedly connected to the dust cover 2 and is inserted into the wedge-shaped groove 521 away from the dust cover 2, a first penetrating hole is formed in a top wall of the lifting block 52, a second penetrating hole is formed in a top wall of the wedge-shaped block 541, and a fixing pin 542 is inserted into the first penetrating hole and the second penetrating hole.

[0034] The wedge-shaped block 541 and the fixing pin 542 are arranged to connect the lifting block 52 and the dust cover 2, and the installation and dismounting of the dust cover 2 are more convenient, and the probability of dismounting inconvenience when the equipment is damaged is reduced.

[0035] With reference to Figure 5 The exhaust pipe 3 is also provided with an auxiliary dust removal mechanism 7, the auxiliary dust removal mechanism 7 comprises a gas rotary joint 72, the gas rotary joint 72 is installed on the exhaust pipe 3, two connecting pipes 73 are fixedly connected to the gas rotary joint 72, handheld dust collectors 74 are installed on one end of the connecting pipes 73 away from the exhaust pipe 3 through adjusting assemblies 75, a control valve 71 is also installed on the exhaust pipe 3 and located between the dust cover 2 and the gas rotary joint 72.

[0036] Due to the characteristics of aerodynamics, the flow rate of wind speed at the center of the cover opening is much lower than that at the edge, which actually causes dust removal dead angle when dust removal is performed, and thus reduces the dust removal effect. The arrangement of the handheld dust remover 74 realizes manual cleaning of the dust removal dead angle, so that the dust removal effect is better.

[0037] With reference to Figure 5 and Figure 6 , the adjusting assembly 75 comprises a second bellows 754 fixedly connected to the connecting pipe 73, and the end away from the connecting pipe 73 is fixedly connected to the handheld dust remover 74. The outer side wall of the dust cover 2 is also fixedly connected with a fixing ring 751, the outer side wall of the fixing ring 751 is provided with a first annular groove 755, the bottom wall of the first annular groove 755 is provided with a second annular groove 756, and the second annular groove 756 is slidably connected with two rotating blocks 753. The first annular groove 755 is slidably connected with two rotating rods 752, the two rotating rods 752 are respectively fixedly connected with the two rotating blocks 753, and the ends away from the rotating blocks 753 of the two rotating rods 752 are respectively connected with the two connecting pipes 73 through the clamping pieces 76.

[0038] The arrangement of the second bellows 754 realizes the length adjustment of the handheld dust remover 74, and increases the dust removal range. The arrangement of the rotating rods 752 and the rotating blocks 753 realizes the rotation of the handheld dust remover 74, and further increases the dust removal range of the handheld dust remover 74.

[0039] With reference to Figure 7 , the clamping piece 76 comprises a first arc-shaped clamping block 761 fixedly connected to the end of the rotating rod 752 away from the rotating block 753. The end of the first arc-shaped clamping block 761 away from the rotating rod 752 is hingedly connected with a second arc-shaped clamping block 762. The clamping piece 76 further comprises a fixing bolt 763, and the fixing bolt 763 is threadedly connected with a fixing nut 764 in sequence through the first arc-shaped clamping block 761 and the second arc-shaped clamping block 762.

[0040] The arrangement of the first arc-shaped clamping block 761 and the second arc-shaped clamping block 762 realizes the connection of the rotating rod 752 and the connecting pipe 73, and the arrangement of the fixing bolt 763 and the fixing nut 764 makes the disassembly of the connecting pipe 73 more convenient.

[0041] With reference to Figure 8 and Figure 9The cleaning mechanism 6 is arranged on the dust cover 2, and the cleaning mechanism 6 comprises a first cleaning scraper 61, the first cleaning scraper 61 is rotationally connected to the dust cover 2 through a driving assembly 63 and abuts against the inner wall of the dust cover 2, one end of the first cleaning scraper 61 close to the exhaust pipe 3 is fixedly connected with a second cleaning scraper 62, the second cleaning scraper 62 is located in the exhaust pipe 3 and abuts against the inner wall of the exhaust pipe 3, the driving assembly 63 comprises a rotating gear ring 631, the rotating gear ring 631 is rotationally connected to the end face of the dust cover 2 away from the exhaust pipe 3 through a connecting piece 64, the first cleaning scraper 61 abuts against the inner side wall of the rotating gear ring 631, the dust cover 2 is further fixedly connected with a fixed plate 632 on the outer side wall, the fixed plate 632 is fixedly connected with a second motor 633, a gear 634 is keyed on the output shaft of the second motor 633, and the gear 634 is engaged with the rotating gear ring 631.

[0042] The dust cover 2 is the first component through which dust passes, and dust is easily adhered and accumulated in the dust cover 2; in particular, when oily, humid or fibrous dust is handled, blockage is prone to occur; the first cleaning scraper 61 and the second cleaning scraper 62 are arranged to clean the inner walls of the dust cover 2 and the exhaust pipe 3, thereby reducing the probability of blockage of the dust cover 2 and the exhaust pipe 3; when the first cleaning scraper 61 and the second cleaning scraper 62 are rotated, the second motor 633 is started, the second motor 633 drives the gear 634 to rotate, the gear 634 drives the rotating gear ring 631 to rotate, the rotating gear ring 631 drives the first cleaning scraper 61 to rotate, and the first cleaning scraper 61 drives the second cleaning scraper 62 to rotate.

[0043] A third annular groove 635 is formed in the end face of the rotating gear ring 631 close to the dust cover 2, a fourth annular groove 636 is formed in the bottom wall of the third annular groove 635, the connecting piece 64 comprises a plurality of connecting rods 641, the plurality of connecting rods 641 are fixedly connected to the end face of the dust cover 2 away from the exhaust pipe 3, a rotating wheel 642 is rotationally connected to one end of each connecting rod 641 away from the dust cover 2, and the rotating wheel 642 is rotationally connected in the fourth annular groove 636; the rotating wheel 642 is arranged to rotate the rotating gear ring 631, thereby rotating the first cleaning scraper 61 and the second cleaning scraper 62.

[0044] The application further discloses a use method of the movable dust removal device. Step 1: when dust removal is performed, the first motor 531 is started according to the height of the dust removal position, the first motor 531 drives the first bevel gear 532 to rotate, the first bevel gear 532 drives the trapezoidal lead screw 51 to rotate through the second bevel gear 533, and the trapezoidal lead screw 51 drives the dust cover 2 to move to the dust removal position through the lifting block 52 to perform dust removal; Step 2: when dusting the dusting dead angle, manually pull the handheld dust collector 74 to the position of the dusting dead angle, at this time, the arrangement of the rotating rod 752 and the second bellows 754 makes the moving range of the handheld dust collector 74 wider; Step 3: when cleaning the dust in the dust cover 2 and the exhaust pipe 3, the second motor 633 is started, the second motor 633 drives the gear 634 to rotate, the gear 634 drives the rotating gear ring 631 to rotate, the rotating gear ring 631 drives the first cleaning scraper 61 to rotate, the first cleaning scraper 61 drives the second cleaning scraper 62 to rotate, thereby realizing the cleaning of the dust in the dust cover 2 and the exhaust pipe 3.

[0045] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A portable dust removal device, comprising two adjacent steel columns (1) supported within a workshop, characterized in that, Dust hoods (2) are slidably connected to the two steel columns (1) via a lifting mechanism (5). An exhaust pipe (3) is fixedly connected to the air outlet end of the dust hood (2). A first corrugated pipe (4) is fixedly connected to the end of the exhaust pipe (3) away from the dust hood (2). The lifting mechanism (5) includes two trapezoidal screws (51). The two trapezoidal screws (51) are rotatably connected to the two steel columns (1). Lifting blocks (52) are also slidably connected to the two steel columns (1). A screw nut is provided inside the lifting block (52). The screw nut cooperates with the trapezoidal screw (51). The lifting block (52) is connected to the dust hood (2) via an installation component (54). A power component (53) is installed on the ground. The power component (53) is connected to the trapezoidal screw (51) via a transmission.

2. The portable dust removal device according to claim 1, characterized in that, The power assembly (53) includes two first motors (531), both of which are mounted on the ground and controlled by the same controller. A first bevel gear (532) is keyed to the output shaft of the first motor (531). A second bevel gear (533) is fixedly connected to one end of the trapezoidal screw (51) near the first motor (531), and the second bevel gear (533) meshes with the first bevel gear (532).

3. The portable dust removal device according to claim 1, characterized in that, The lifting block (52) has a wedge-shaped groove (521) on its side wall near the dust cover (2). The mounting assembly (54) includes a wedge-shaped block (541). The wedge-shaped block (541) is fixedly connected to the dust cover (2), and one end of the wedge-shaped block (541) away from the dust cover (2) is inserted into the wedge-shaped groove (521). The top wall of the lifting block (52) has a first through hole, and the top wall of the wedge-shaped block (541) has a second through hole. A fixing pin (542) is inserted into both the first through hole and the second through hole.

4. The portable dust removal device according to claim 2, characterized in that, An auxiliary dust removal mechanism (7) is also provided on the exhaust pipe (3). The auxiliary dust removal mechanism (7) includes a gas rotary joint (72). The gas rotary joint (72) is installed on the exhaust pipe (3). Two connecting pipes (73) are fixedly connected to the gas rotary joint (72). A handheld dust collector (74) is installed on the end of the connecting pipe (73) away from the exhaust pipe (3) through an adjustment component (75). A control valve (71) is also installed on the exhaust pipe (3). The control valve (71) is located between the dust removal hood (2) and the gas rotary joint (72).

5. The portable dust removal device according to claim 4, characterized in that, The adjustment assembly (75) includes a second corrugated pipe (754), which is fixedly connected to the connecting pipe (73), and one end away from the connecting pipe (73) is fixedly connected to the handheld dust collector (74). A fixing ring (751) is also fixedly connected to the outer wall of the dust collector (2). A first annular groove (755) is provided on the outer wall of the fixing ring (751), and a second annular groove (756) is provided on the bottom wall of the first annular groove (755). Two rotating blocks (753) are slidably connected in the second annular groove (756), and two rotating rods (752) are slidably connected in the first annular groove (755). The two rotating rods (752) are fixedly connected to the two rotating blocks (753), and the ends of the two rotating rods (752) away from the rotating blocks (753) are respectively connected to the two connecting pipes (73) through clamps (76).

6. The portable dust removal device according to claim 5, characterized in that, The clamping member (76) includes a first arc-shaped clamping block (761), which is fixedly connected to one end of the rotating rod (752) away from the rotating block (753). A second arc-shaped clamping block (762) is hinged to one end of the first arc-shaped clamping block (761) away from the rotating rod (752). The clamping member (76) also includes a fixing bolt (763), which is threaded through the first arc-shaped clamping block (761) and the second arc-shaped clamping block (762) and connected to a fixing nut (764).

7. The portable dust removal device according to claim 5, characterized in that, The dust cover (2) is also equipped with a cleaning mechanism (6), which includes a first cleaning scraper (61). The first cleaning scraper (61) is rotatably connected to the dust cover (2) via a drive assembly (63) and abuts against the inner wall of the dust cover (2). A second cleaning scraper (62) is fixedly connected to one end of the first cleaning scraper (61) near the exhaust pipe (3). The second cleaning scraper (62) is located in the exhaust pipe (3) and abuts against the inner wall of the exhaust pipe (3).

8. The portable dust removal device according to claim 7, characterized in that, The drive assembly (63) includes a rotating gear ring (631), which is rotatably connected to the end face of the dust collector (2) away from the exhaust pipe (3) via a connector (64). The first cleaning scraper (61) is fixedly connected to the inner side wall of the rotating gear ring (631). A fixing plate (632) is also fixedly connected to the outer side wall of the dust collector (2). A second motor (633) is fixedly connected to the fixing plate (632). A gear (634) is keyed to the output shaft of the second motor (633), and the gear (634) meshes with the rotating gear ring (631).

9. The portable dust removal device according to claim 8, characterized in that, The rotating gear ring (631) has a third annular groove (635) on its end face near the dust collector (2), and a fourth annular groove (636) is provided on the bottom wall of the third annular groove (635). The connector (64) includes multiple connecting rods (641), all of which are fixedly connected to the end face of the dust collector (2) away from the exhaust pipe (3). A rotating wheel (642) is rotatably connected to one end of the connecting rod (641) away from the dust collector (2), and the rotating wheel (642) is rotatably connected in the fourth annular groove (636).

10. A method of using a portable dust removal device, characterized in that, Using the portable dust removal device according to claim 8 for dust removal in a workshop includes the following steps: Step 1: When dust removal is performed, the first motor (531) is started according to the height of the dust removal position. The first motor (531) drives the first bevel gear (532) to rotate. The first bevel gear (532) drives the trapezoidal screw (51) to rotate through the second bevel gear (533). The trapezoidal screw (51) drives the dust removal hood (2) to move to the dust removal position through the lifting block (52) for dust removal. Step 2: When cleaning the dust dead corner, manually pull the handheld dust collector (74) to the position of the dust dead corner. At this time, the setting of the rotating rod (752) and the second corrugated pipe (754) makes the movement range of the handheld dust collector (74) wider. Step 3: When cleaning the dust inside the dust cover (2) and the exhaust pipe (3), the second motor (633) is started. The second motor (633) drives the gear (634) to rotate. The gear (634) drives the rotating gear ring (631) to rotate. The rotating gear ring (631) drives the first cleaning scraper (61) to rotate. The first cleaning scraper (61) drives the second cleaning scraper (62) to rotate, thereby achieving the cleaning of the dust inside the dust cover (2) and the exhaust pipe (3).

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