Dustproof device

Abstract

The invention relates to the field of decoration cleaning, in particular to a dustproof device which comprises two sets of lifting equipment, dust removal equipment, dustproof equipment and driving equipment, each set of lifting equipment comprises a bottom rod, a moving rod and a screw rod, the bottom rod is sleeved with the moving rod, and the screw rod penetrates through the moving rod and the bottom rod so that the moving rod can ascend or descend relative to the bottom rod; and the height of the moving rod is changed. The dust removal equipment is arranged on the lifting equipment and comprises a fan, a dust suction port, a filter part and an air outlet, and air is sucked from the dust suction port by the fan, filtered by the filter part and then exhausted from the air outlet. The dustproof device comprises a winding drum and a dustproof curtain. The winding drum is arranged at the top end of the moving rod. The driving equipment is arranged on the lifting equipment, and when the position of the dust collection opening needs to be adjusted, the driving equipment controls the lifting equipment to adjust the height, it is guaranteed that dust at the corresponding height can be cleaned in real time when the dust collection opening conducts dust removal, and the health of workers is prevented from being affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of decoration cleaning, in particular, to a dustproof device. BACKGROUND

[0002] A series of complex and delicate construction activities are involved in the process of interior decoration. In the process of interior decoration, design and construction are carried out in the interior space of a building, and operations such as punching, cutting and polishing are often required in the interior. These operations are often accompanied by the generation of a large amount of particulate matter and dust, which can quickly spread in the interior and pollute the indoor environment, affecting air quality, causing difficulties for later cleaning, and even spreading to the external environment through openings such as windows or doors, causing adverse effects on the surrounding air quality and even posing a potential threat to the health of surrounding residents.

[0003] The dustproof devices in the prior art can only collect dust of a specific height, or an operator can collect dust in other areas by holding a relatively small dustproof device. This operation is time-consuming and cannot adjust the dust collection height in real time according to the height of the work area during work, which still affects the health of the operator. SUMMARY

[0004] The present application is made to solve the above technical problems, and the purpose is to provide a dustproof device which can adjust the position of the dust suction port of the dustproof device by setting the lifting equipment, so that the dust suction height can be adjusted according to the height of the construction work area.

[0005] In order to achieve the above purpose, the present application provides a dustproof device, comprising: two groups of lifting equipment, each comprising a bottom rod, a moving rod and a screw rod, the moving rod being sleeved on the bottom rod, and the screw rod penetrating through the moving rod and the bottom rod so that the moving rod can be raised or lowered relative to the bottom rod; a dust removal device arranged on the lifting equipment, comprising a fan, a dust suction port, a filter and an air outlet, the fan sucking air from the dust suction port, filtering it through the filter and discharging it from the air outlet; a dustproof device comprising a winding drum and a dustproof curtain, the winding drum being arranged at the top end of the moving rod, the dustproof curtain being curled around the winding drum at one end, being arranged between the two groups of lifting equipment at the middle part, and being fixed at the bottom end of the bottom rod; a driving device arranged on the lifting equipment for driving the lifting equipment to lift, driving the winding drum to rotate and driving the fan to operate.

[0006] Preferably, the dust removal device further comprises at least two dust suction boxes and a corrugated pipe, the two dust suction boxes are arranged on the two groups of lifting equipment respectively, and a connecting pipe is arranged between the two dust suction boxes, the dust suction port is arranged on the dust suction box, one end of the corrugated pipe is connected to the dust suction box, and the other end is connected to the bottom rod.

[0007] Preferably, the moving rod comprises a first sliding groove, the bottom rod comprises a second sliding groove, the first sliding groove and the second sliding groove are correspondingly arranged, a first sliding block is slidably connected in the first sliding groove, a second sliding block is correspondingly arranged in the second sliding groove, the first sliding block is connected with the second sliding block, and the first sliding block is connected to the dust collection box.

[0008] Preferably, along the length direction of the moving rod and the bottom rod, the moving rod further comprises a first groove, the bottom rod further comprises a second groove, the first groove and the second groove are correspondingly arranged, and the first groove and the second groove penetrate the side wall, the top surface and the bottom surface of the moving rod and the bottom rod.

[0009] Preferably, the dustproof curtain comprises a plurality of curtain bodies arranged side by side and a vertical plate arranged at the bottom of the curtain body, the width of the first groove and the second groove is greater than the width of the dustproof curtain, and the width of the first groove and the second groove is less than the width of the vertical plate.

[0010] Preferably, the driving device comprises a driving motor and a worm, the worm is connected to the driving motor and the winding drum, and the worm and the screw rod are engagedly connected.

[0011] Preferably, the filter comprises a box body and a filter screen, a first limiting groove is arranged on the inner wall of the box body, the filter screen is mounted in the first limiting groove, the air inlet of the fan is located below the filter screen, and the dust suction port is located above the filter screen.

[0012] Preferably, the air outlet assembly is further connected to the fan, comprising an air outlet box, a purification element and a mounting bracket, the air outlet is arranged on the air outlet box, the mounting bracket is mounted in the air outlet box and divides the air outlet box into a first area and a second area, the air outlet is communicated with the first area, the air outlet of the fan is communicated with the second area, and the purification element is mounted on the mounting bracket.

[0013] Preferably, the base is further arranged at the bottom of the dust collection equipment, comprising at least two pulleys and an adjusting device connected to the pulleys, the adjusting device comprises a lifting screw rod, a transmission wheel, a transmission belt and a sleeve, the sleeve is fixedly connected to the transmission wheel, the transmission wheel is connected to the pulley through the lifting screw rod, and the transmission belt is arranged around two adjacent transmission wheels.

[0014] Preferably, the adjusting device further comprises a rotating handle and a sliding plate, the rotating handle is mounted on the sleeve, and the sliding plate is mounted between the pulley and the lifting screw rod.

[0015] According to the above description and practice, the dustproof device comprises two groups of lifting devices, dust removal devices, dustproof devices and driving devices, the two groups of lifting devices respectively comprise a bottom rod, a moving rod and a screw rod, the moving rod is sleeved on the bottom rod, and the screw rod penetrates through the moving rod and the bottom rod, so that the moving rod can ascend or descend relative to the bottom rod, and the height of the moving rod is changed. The dust removal device is arranged on the lifting device and comprises a fan, a dust suction port, a filter element and an air outlet. The fan sucks air from the dust suction port, filters the air through the filter element and discharges the air through the air outlet. When the dust removal device ascends and descends with the moving rod, the dust removal area changes, so that the dustproof device can remove dust according to the dust concentration and the area where dust is generated, and the health of the operator is not affected by poor dust removal effect during operation. The dustproof device comprises a winding drum and a dustproof curtain. The winding drum is arranged at the top end of the moving rod, one end of the dustproof curtain is curled around the winding drum, the middle part is arranged between the two groups of lifting devices, and the other end is fixed to the bottom end of the bottom rod. When the winding drum ascends with the moving rod, the dustproof curtain can also be between the two groups of lifting devices, so that the dustproof curtain can protect the dust generated during operation. The driving device is arranged on the lifting device and is used for driving the lifting device to ascend and descend, driving the winding drum to rotate and driving the fan to operate. When the position of the dust suction port needs to be adjusted, the driving device is opened. On one hand, the height of the lifting device is adjusted, so that the dust suction port can reach the corresponding height and absorb the dust generated during operation at a short distance. On the other hand, the winding drum is controlled to rotate to ensure that the dustproof curtain can always be between the two groups of lifting devices, so that when the dust suction port removes dust, the dust cannot be sucked between the two groups of lifting devices by the fan and gradually move away from the dust suction port, which affects the dust removal effect of the dustproof device. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the dustproof device involved in an embodiment of the present application.

[0017] Figure 2 It is a partial structural schematic view of the dustproof device involved in another embodiment of the present application.

[0018] Figure 3 It is a structural schematic view of the lifting device involved in an embodiment of the present application.

[0019] Figure 4 It is a structural schematic view of the filter element involved in an embodiment of the present application.

[0020] Figure 5 It is a structural schematic view of the air outlet assembly involved in an embodiment of the present application.

[0021] Figure 6 It is a structural schematic view of the dustproof curtain involved in an embodiment of the present application.

[0022] Figure 7A structural schematic diagram related to the base in one embodiment of the present application. DETAILED DESCRIPTION

[0023] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, may, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the description. One skilled in the art will appreciate that the features described herein can be combined in any suitable manner in the one or more embodiments.

[0024] In addition, the accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. In the drawings:

[0025] Unless otherwise defined, the terms "mounting", "connected", "connecting" are to be construed as broadly, for example, can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] The present application discloses a dustproof device, please refer to Figures 1 to 7The dustproof device comprises two sets of lifting devices 1, a dust removal device 28, a dustproof device and a driving device. The two sets of lifting devices 1 respectively comprise a bottom rod 7, a moving rod 6 and a screw rod 10. The moving rod 6 is sleeved on the bottom rod 7. The screw rod 10 penetrates through the moving rod 6 and the bottom rod 7, so that the moving rod 6 can be lifted or lowered relative to the bottom rod 7, thereby changing the height of the moving rod 6. The dust removal device 28 is arranged on the lifting device 1 and comprises a fan 26, a dust suction port 34, a filter 27 and an air outlet 46. The fan 26 sucks air from the dust suction port 34, filters the air through the filter 27 and then discharges the air from the air outlet 46. When the moving rod 6 is lifted and lowered, the dust removal area of the dust removal device 28 also changes, so as to ensure that the dustproof device can perform targeted dust removal according to the dust concentration and the area where dust is generated, thereby avoiding the influence on the health of the operator due to poor dust suction and dustproof effect during operation. The dustproof device comprises a winding drum 3 and a dustproof curtain 4. The winding drum 3 is arranged at the top end of the moving rod 6. One end of the dustproof curtain 4 is wound around the winding drum 3. The middle part of the dustproof curtain 4 is arranged between the two sets of lifting devices 1. The other end of the dustproof curtain 4 is fixed to the bottom end of the bottom rod 7. When the winding drum 3 is lifted along with the moving rod 6, the dustproof curtain 4 can also be arranged between the two sets of lifting devices 1, so as to ensure the dustproof effect of the dustproof curtain 4 on the operation dust, thereby avoiding the rapid spread of dust in the room and the pollution of the indoor environment. The driving device is arranged on the lifting device 1 and is used for driving the lifting device 1 to lift and lower, driving the winding drum 3 to rotate and driving the fan 26 to operate. When it is necessary to adjust the position of the dust suction port 34, the driving device is turned on. On one hand, the height of the lifting device 1 is adjusted, so that the dust suction port 34 can reach the corresponding height and perform close-range absorption of the dust generated during operation. On the other hand, the winding drum 3 is controlled to rotate, so as to ensure that the dustproof curtain 4 can always be arranged between the two sets of lifting devices 1, thereby ensuring that the dust suction port 34 can not suck the dust between the two sets of lifting devices 1 under the action of the fan 26 and gradually move away from the dust suction port 34, so as to cause poor dust removal effect of the entire dustproof device.

[0027] Further, in some embodiments, the lifting device 1 further comprises a worm gear 11. The worm gear 11 is sleeved on the screw rod 10. The driving device drives the worm gear 11 to rotate, thereby driving the screw rod 10 to rotate between the moving rod 6 and the bottom rod 7. The driving device directly contacts the screw rod 10, thereby avoiding the damage of the screw rod 10 due to the torsion under the driving force of the driving device. The driving force of the driving device acts on the worm gear 11. The worm gear 11 is relatively independently arranged. When the worm gear 11 is damaged by the driving force, it is easier for the operator to replace the worm gear 11.

[0028] In some embodiments, the dustproof device further comprises a mounting box 12. The driving device, the worm gear 11 and the screw rod 10 are accommodated in the mounting box 12, thereby avoiding the interference of external factors on the driving device, the worm gear 11 and the screw rod 10 during normal operation, thereby avoiding the damage of the driving device, the worm gear 11 and the screw rod 10 or the influence on the transmission effect between the driving device and the worm gear 11 and the screw rod 10.

[0029] It can be understood that, in order to be able to more flexibly adjust the position of the dust suction port 34, while stably sending the dust sucked from the dust suction port 34 into the filter 27, in some embodiments, the dust removal device 28 further comprises at least two dust suction boxes 29 and bellows 30, two dust suction boxes 29 are respectively arranged on two groups of lifting devices 1 and move with the movement of the lifting devices 1, and the position of the dust suction box 29 can be adjusted according to actual needs, so that it can directly absorb dust at the corresponding position, and the dust removal effect of the dustproof device is ensured. And a connecting pipe 33 is arranged between the two dust suction boxes 29, which can ensure the synchronous movement of the dust suction boxes 29 located on the two groups of lifting devices 1, so as to avoid the height difference between the two dust suction boxes 29 when the two lifting devices 1 move asynchronously, which affects the dust removal effect of the dust suction box 29. The dust suction port 34 is arranged on the dust suction box 29, one end of the bellows 30 is connected to the dust suction box 29, and the other end is connected to the bottom rod 7. When the moving rod 6 moves relative to the bottom rod 7, the bellows 30 can be extended and retracted to ensure that the dust suction box 29 can move together with the moving rod 6 to the required position, ensuring that the dust suction box 29 can always move together with the moving rod 6 to the corresponding height, and the dust sucked by the dust suction box 29 can also always be sent into the filter 27 along the bellows 30, further ensuring the dust removal effect of the dustproof device.

[0030] Further, in some embodiments, the dust suction box 29 can be provided with a plurality of dust suction boxes 29, which are respectively arranged on two groups of lifting devices 1, and the bellows 30 is connected between two adjacent dust suction boxes 29. The plurality of dust suction boxes 29 can move together with the moving rod 6, further expanding the dust removal area of the entire dustproof device, while reducing the dust removal pressure of a single dust suction box 29. The air containing dust sucked by the dust suction ports 34 of the plurality of dust suction boxes 29 can be transmitted by the bellows 30 connected therebetween and finally collected into the filter 27 for purification and discharge. In some embodiments, the moving rod 6 comprises a first sliding groove 35, the bottom rod 7 comprises a second sliding groove 36, and the first sliding groove 35 and the second sliding groove 36 are correspondingly arranged. A first sliding block 37 is slidably connected in the first sliding groove 35, and a second sliding block 38 is correspondingly arranged in the second sliding groove 36. The first sliding block 37 and the second sliding block 38 are connected, and the first sliding block 37 is connected to the dust suction box 29. When the driving device drives the moving rod 6 to move, the first sliding block 37 and the second sliding block 38 move together in the first sliding groove 35 and the second sliding groove 36, ensuring that the moving rod 6 and the bottom rod 7 do not dislocate when they move relative to each other, avoiding the dislocation of the lifting device 1 when moving, which causes the entire dustproof device to deviate, thereby affecting the dustproof effect of the dustproof device. In addition, by connecting the dust suction box 29 to the first sliding block 37, the dust suction box 29 can move together with the moving rod 6, realizing the change of the height of the dust suction box 29, and further realizing the adjustment of the dust removal position of the entire dustproof device, improving its dust removal effect.

[0031] In order to ensure that the mobile rod 6 and the base rod 7 do not deviate laterally when the mobile rod 6 is raised and lowered relative to the base rod 7, in some embodiments, the mobile rod 6 further comprises a first groove 16 along the length direction of the mobile rod 6, and the base rod 7 further comprises a second groove 17, the first groove 16 and the second groove 17 are correspondingly arranged, and the first groove 16 and the second groove 17 penetrate the side wall, top surface and bottom surface of the mobile rod 6 and the base rod 7, and the first groove 16 and the second groove 17 always restrict each other, so as to ensure that the mobile rod 6 and the base rod 7 do not deviate laterally, thereby ensuring the lifting effect of the lifting device 1.

[0032] In some embodiments, the dustproof curtain 4 comprises a plurality of curtain bodies 13 arranged side by side and a vertical plate 15 arranged at the bottom of the curtain body 13. The arrangement of the plurality of curtain bodies 13 facilitates opening and closing, thereby facilitating the entry and exit of construction personnel. The curtain body 13 is used to block dust from escaping from the edge of the dust suction port 34 when the dust moves under the action of the fan 26, thereby affecting the dust suction effect. The width and weight of the vertical plate 15 are relatively large to ensure that the dustproof curtain 4 remains stable when it is unfolded and is not easily blown or shaken by the wind, thereby improving the dustproof effect. Flexible magnetic strips are arranged on both sides of each curtain body 13. The flexible magnetic strips attract each other, so that the curtain bodies 13 can be closely attached to each other, thereby reducing the possibility of dust entering through the gap. The width of the first groove 16 and the second groove 17 is greater than the width of the dustproof curtain 4, and the width of the first groove 16 and the second groove 17 is less than the width of the vertical plate 15. The dustproof curtain 4 on both sides can be inserted and clamped into the first groove 16 and the second groove 17, thereby improving the sealing between the dustproof curtain 4 and the lifting device 1, and fixing the position of the dustproof curtain 4. Specifically, the curtain body 13 can be made of transparent materials such as PVC, polyester fiber or PEVA, which facilitates the observation of the external environment by the operator.

[0033] In other embodiments, the curtain body 13 further comprises a wrapped edge with a wrapped sleeve 14, which can protect the flexible magnetic strips from damage and enhance the overall strength and durability of the dustproof curtain 4.

[0034] It can be understood that, in some embodiments, the driving device comprises a driving motor 9 and a worm 8, the worm 8 is connected to the driving motor 9 and the winding drum 3, and the worm 8 and the screw rod 10 are engaged or connected through a worm gear 11. Specifically, the driving motor 9 starts and drives the worm 8 to rotate, the winding drum 3 is sleeved on the worm 8 and is curled with the rotation of the worm 8, thereby driving the dustproof curtain 4 to unfold and roll up; the driving motor 9 starts and drives the worm 8 to rotate, which is engaged with the worm gear 11, the worm gear 11 rotates coaxially with the screw rod 10, thereby driving the screw rod 10 to raise or lower relative to the base rod 7.

[0035] In addition, the driving motor 9 is a commonly used positive and negative rotation motor in the prior art, and the output end of the driving motor 9 can be provided with a speed reducer according to requirements, so as to adjust the moving speed and rotating direction of the winding drum 3 or the lifting device 1.

[0036] When the dust suction port 34 absorbs dust, it is usually through the absorption of air with dust and the additional exhaust of air, so as to ensure that the exhaust air does not continue to affect the environment. In some embodiments, the filter 27 includes a box body 39 and a filter screen 44, the box body 39 is provided with a first limiting groove 40 on the inner wall, and the filter screen 44 is installed in the first limiting groove 40 and used for filtering the air entering the box body 39. The air inlet of the fan 26 is located below the filter screen 44, and the dust suction port 34 is located above the filter screen 44. The fan 26 works to transport the air with dust from the outside to the box body 39. Due to the natural flow of air and the suction force generated by the fan 26 in the lower cavity, the air will pass through the filter screen 44. The filter screen 44 intercepts and filters the dust particles and impurities in the air. The filtered relatively clean air can enter the lower cavity through the filter screen 44 and enter the fan 26, and then be discharged through the fan 26, thereby ensuring the effective filtration of the filter 27 to the suction air containing dust and improving the dustproof and air purification effect of the dustproof device.

[0037] Further, in some embodiments, the box body 39 further includes a filter frame 41, the filter screen 44 is installed on the filter frame 41, and the filter frame 41 can be detached from the first limiting groove 40, so as to facilitate the cleaning of the filtered dust and the replacement or maintenance of the filter screen 44, thereby improving the practicability and maintainability of the dustproof device. It can be understood that the box body 39 further includes a first insertion slot 43, the first insertion slot 43 is correspondingly provided with the filter frame 41, so as to facilitate the operator to take out and replace the filter screen 44 on the filter frame 41 from the first insertion slot 43, thereby further ensuring the dustproof and air purification effect of the dustproof device.

[0038] Further, the dustproof device further comprises an air outlet assembly connected to the fan 26, which comprises an air outlet box 45, a purifying member 49 and a mounting rack 50. An air outlet 46 is arranged on the air outlet box 45, the mounting rack 50 is mounted in the air outlet box 45 and divides the air outlet box 45 into a first area and a second area. The air outlet 46 is connected to the first area, the air outlet 46 of the fan 26 is connected to the second area, and the purifying member 49 is mounted on the mounting rack 50. The fan 26 delivers the air filtered by the filter 27 to the air outlet box 45 through the pipeline. When the air enters the air outlet box 45, the air first passes through the purifying member 49, which further purifies the air. On the one hand, the purifying member 49 can adsorb the fine dust particles remaining in the air. On the other hand, the purifying member 49 can also humidify the air to a certain extent. The air purified and humidified by the purifying member 49 is discharged through the air outlet 46 and flows downward. The humidified air can adsorb the dust floating in the air, so as to avoid dust raising and further improve the dust removal effect of the dustproof device.

[0039] Further, in some embodiments, the air outlet 46 is inclined to the ground by a certain angle, so as to ensure that the humidified air has a downward movement tendency, thereby further improving the dust removal effect of the dustproof device.

[0040] It can be understood that the air outlet box 45 is provided with a second limiting groove 48 for accommodating the mounting rack 50, so as to avoid the mounting rack 50 from shaking in the air outlet assembly due to the action of the fan 26, thereby affecting the position of the purifying member 49. The air outlet box 45 further comprises a second insertion slot 47 for installing a replacement mounting rack 50. The operator can take out and replace the purifying member 49 on the mounting rack 50 from the second insertion slot 47, so as to ensure the cleanliness of the air discharged by the air outlet assembly and further ensure the dustproof and air purification effect of the dustproof device.

[0041] It can be understood that, in order to ensure that the entire dustproof device can be stably placed on the working surface at all times, in some embodiments, the dustproof device further comprises a base 2 arranged at the bottom of the dust collection equipment, which comprises at least two pulleys 5 and an adjusting device connected to the pulleys 5 for adjusting the height of the pulleys 5. The adjusting device comprises a lifting screw 19, a transmission wheel 22, a transmission belt and a sleeve 20. The sleeve 20 is fixedly connected to the transmission wheel 22, the transmission wheel is connected to the pulley 5 through the lifting screw 19, the transmission belt surrounds two adjacent transmission wheels 22, and the operator can adjust the height of the pulley 5 by rotating the sleeve 20, so as to ensure that the entire dustproof device can be stably placed on the working surface at all times. The rotating sleeve 20 is threadedly sleeved with the lifting threaded rod 19, when one sleeve 20 rotates, it drives the lifting threaded rod 19 to move up and down, and in turn drives the pulley 5 to move. At the same time, the transmission wheel 22 rotates synchronously with the sleeve 20, and the transmission wheel 22 and the sleeve 20 on the other pulley 5 are driven to rotate synchronously through the transmission belt, so as to realize the synchronous lifting of the two pulleys 5. When the device needs to move, the pulley 5 is lowered, so that the pulley 5 is in contact with the ground, facilitating the movement of the whole dustproof device; when the dustproof device needs to work fixedly, the pulley 5 is lifted to the inside of the base 2, so that the bottom surface of the base 2 is in contact with the ground, thereby increasing the stability and mobility of the device.

[0042] Further, the bottom of the base 2 is further provided with a rubber pad 24, which increases the contact area and friction between the base 2 and the ground, avoids unnecessary movement of the base 2 due to too small friction with the ground, and affects the dust collection and dust prevention effect of the dustproof device.

[0043] It can be understood that, in some embodiments, the adjusting device further comprises a handle 21 and a sliding plate 18, the handle 21 is installed on the sleeve 20, facilitating the operator to operate the rotating sleeve 20, and the sliding plate 18 is installed between the pulley 5 and the lifting threaded rod 19, avoiding the direct contact between the lifting threaded rod 19 and the pulley 5, and causing damage to the pulley 5 when rotating.

[0044] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A dust guard device characterized by comprising: The dustproof device comprises two groups of lifting devices, dust removal devices, dustproof devices and driving devices. Each group of lifting devices comprises a bottom rod, a moving rod and a screw rod. The moving rod is sleeved on the bottom rod, and the screw rod penetrates through the moving rod and the bottom rod so that the moving rod can be lifted or lowered relative to the bottom rod. The dust removal device is arranged on the lifting device and comprises a fan, a dust suction port, a filter and an air outlet. The fan sucks air from the dust suction port, filters the air through the filter and then discharges the air through the air outlet. The dustproof device comprises a winding drum and a dustproof curtain. The winding drum is arranged at the top end of the moving rod. One end of the dustproof curtain is curled around the winding drum, the middle part is arranged between the two groups of lifting devices, and the other end is fixed at the bottom end of the bottom rod. The driving device is arranged on the lifting device and is used for driving the lifting device to lift or lower, driving the winding drum to rotate and driving the fan to operate.

2. The dustproof device of claim 1, wherein the dust removal device further comprises at least two dust suction boxes and a corrugated pipe. Two dust suction boxes are arranged on the two groups of lifting devices respectively, and a connecting pipe is arranged between the two dust suction boxes. The dust suction port is arranged on the dust suction box. One end of the corrugated pipe is connected to the dust suction box, and the other end is connected to the bottom rod.

3. The dustproof device of claim 2, wherein the moving rod comprises a first sliding groove, and the bottom rod comprises a second sliding groove. The first sliding groove and the second sliding groove are correspondingly arranged. A first sliding block is slidably connected in the first sliding groove, and a second sliding block is correspondingly arranged in the second sliding groove. The first sliding block and the second sliding block are connected, and the first sliding block is connected to the dust suction port.

4. The dustproof device of claim 3, wherein along the length direction of the moving rod and the bottom rod, the moving rod further comprises a first recess, and the bottom rod further comprises a second recess. The first recess and the second recess are correspondingly arranged, and the first recess and the second recess penetrate through the side wall, top surface and bottom surface of the moving rod and the bottom rod.

8. The dust guard of claim 1, wherein 5. The dustproof device of claim 4, wherein the dustproof curtain comprises a plurality of curtain bodies arranged side by side and a vertical plate arranged at the bottom of the curtain body. The width of the first recess and the second recess is greater than the width of the dustproof curtain, and the width of the first recess and the second recess is less than the width of the vertical plate.

6. The dustproof device of claim 1, wherein the driving device comprises a driving motor and a worm. The worm is connected to the driving motor and the winding drum, and the worm and the screw rod are engagedly connected.

7. The dustproof device of claim 1, wherein the filter comprises a box body and a filter screen. A first limiting groove is arranged on the inner wall of the box body, and the filter screen is mounted in the first limiting groove. The air inlet of the fan is located below the filter screen, and the dust suction port is located above the filter screen. Further comprising: The air outlet assembly is connected to the fan and comprises an air outlet box, a purifying element and a mounting rack. The air outlet is arranged on the air outlet box. The mounting rack is mounted in the air outlet box and divides the air outlet box into a first area and a second area. The air outlet is communicated with the first area. The air outlet of the fan is communicated with the second area. The purifying element is mounted on the mounting rack.

9. The dust guard of claim 1, wherein Further comprising: The base is arranged at the bottom of the dust collection device and comprises at least two pulleys and an adjusting device connected to the pulleys. The adjusting device comprises a lifting threaded rod, a transmission wheel, a transmission belt and a sleeve. The sleeve is fixedly connected to the transmission wheel. The transmission wheel is connected to the pulley through the lifting threaded rod. The transmission belt is arranged around two adjacent transmission wheels.

10. The dustproof device according to claim 9, wherein, The adjusting device further comprises a rotating handle and a sliding plate. The rotating handle is mounted on the sleeve. The sliding plate is mounted between the pulley and the lifting threaded rod.

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