阅读说明：本技术 一种多功能环保节能的空气过滤装置及其使用方法 (Multifunctional environment-friendly energy-saving air filtering device and using method thereof ) 是由 潘峻林 于 2020-10-16 设计创作，主要内容包括：本发明提供了一种多功能环保节能的空气过滤装置及其使用方法,其中,一种多功能环保节能的空气过滤装置包括底座,所述底座的顶部左侧固定安装有扶手,所述底座的顶部由左到右依次固定安装有蓄电池、箱体和杂物收集箱,所述箱体的前壁左侧铰接有门板,所述门板相对箱体的一侧面右侧固定安装有限位块,在底座的底部四周固定安装有万向轮,便于通过扶手,可将底座和箱体的位置进行移动和定位,使用较为方便,在底座的顶部左侧固定安装有蓄电池,便于通过蓄电池对电动推杆和电机提供电量,使得电动推杆和电机正常工作,在固定环的顶部固定安装有吸尘罩,便于将粉尘吸收到吸尘罩中进行存放。(The invention provides a multifunctional environment-friendly energy-saving air filtering device and a using method thereof, wherein the multifunctional environment-friendly energy-saving air filtering device comprises a base, the left side of the top of the base is fixedly provided with a handrail, the top of the base is fixedly provided with a storage battery, a box body and a sundries collecting box from left to right in turn, the left side of the front wall of the box body is hinged with a door plate, the right side of the door plate relative to one side surface of the box body is fixedly provided with a limit block, the universal wheels are fixedly arranged on the periphery of the bottom of the base, so that the positions of the base and the box body can be moved and positioned through the handrails, the use is more convenient, the left side of the top of the base is fixedly provided with the storage battery, which is convenient for providing electric quantity for the electric push rod and the motor through the storage battery so that the electric push rod and the motor work normally, the top of the fixing ring is fixedly provided with a dust hood, so that dust can be conveniently absorbed into the dust hood for storage.)

1. The utility model provides a multi-functional environmental protection and energy saving's air filter, includes base (1), its characterized in that: the storage battery type trash bin is characterized in that a handrail (2) is fixedly mounted on the left side of the top of the base (1), a storage battery (3), a box body (4) and a sundries collecting box (5) are fixedly mounted on the top of the base (1) from left to right in sequence, a door panel (6) is hinged to the left side of the front wall of the box body (4), a limiting block (7) is fixedly mounted on the right side of one side face of the door panel (6) relative to the box body (4), a limiting groove (8) is formed in the position of the front wall of the box body (4) relative to the limiting block (7), the limiting block (7) is inserted into the limiting groove (8), a conveying pipe (9) is fixedly mounted on the front portion and the rear portion of the top of the box body (4), a hose (10) is fixedly mounted on the top of the conveying pipe (9), a mounting piece (11) is fixedly mounted, a dust suction pipe (12) is movably mounted on the inner side of the mounting piece (11), the hose (10) and the dust suction pipe (12) are fixedly connected to form a penetrating structure, a dust suction disc (13) is fixedly mounted at the top of the dust suction pipe (12), connecting pieces (14) are fixedly mounted at opposite positions of the opposite surface of the dust suction pipe (12) and the top of the box body (4), and an electric push rod (15) is hinged between the connecting pieces (14);

the dust collection box is characterized in that a dust collection device (16) is fixedly mounted at the top end inside the box body (4), an activated carbon disc (25) is connected to the lower portion of the dust collection device (16) in a threaded mode, a material guiding screen plate (26) is inserted and connected to the lower portion of the inner wall of the box body (4), and a water tank (27) is mounted at the bottom end inside the box body (4).

2. The multifunctional environment-friendly energy-saving air filtering device as claimed in claim 1, is characterized in that: the utility model discloses a handrail, including base (1), handrail (2), two switches of relative setting are installed to the antetheca top of handrail (2), the bottom of base (1) is fixed mounting all around has the universal wheel, and is provided with arresting gear on the universal wheel, handrail (2) are L shape structure, and two switches of relative setting are installed to the antetheca top of handrail (2).

3. The multifunctional environment-friendly energy-saving air filtering device as claimed in claim 1, is characterized in that: the door is characterized in that a clip-shaped pull ring is fixedly mounted on the right side of the front wall of the door plate (6), a limiting block (7) is matched with a limiting groove (8), and the bottom end of the conveying pipe (9) extends into the box body (4).

4. The multifunctional environment-friendly energy-saving air filtering device as claimed in claim 1, is characterized in that: conveyer pipe (9) are two rows, and every row is no less than three, hose (10) are flexible hose, installed part (11) are the U-shaped structure.

5. The multifunctional environment-friendly energy-saving air filtering device as claimed in claim 1, is characterized in that: the dust collection pipe (12) is arranged above the inner side of the mounting part (11) through the matching of a rotating shaft and a bearing, and the connecting part (14) is of a U-shaped structure.

6. The multifunctional environment-friendly energy-saving air filtering device as claimed in claim 1, is characterized in that: dust extraction (16) are including solid fixed ring (17), solid fixed ring (17) have been placed to the inboard of box (4), the top fixed mounting of solid fixed ring (17) has suction hood (18), and the top of suction hood (18) seted up through-hole (19) that set up relatively with conveyer pipe (9), and conveyer pipe (9) fixed mounting is in the inside of through-hole (19).

7. The multifunctional environment-friendly energy-saving air filtering device as claimed in claim 6, is characterized in that: the bottom fixed mounting of solid fixed ring (17) has output cover (20), and output cover (20) are the funnel structure, the both sides inner wall fixed mounting of output cover (20) has bracing piece (21) that the slope set up, and fixed mounting has stop collar (22) between bracing piece (21).

8. The multifunctional environment-friendly energy-saving air filtering device as claimed in claim 7, is characterized in that: the utility model discloses a storage battery, including output cover (20), stop collar (22), motor (23) are installed through the screw in the inside of stop collar (22), and motor (23) and battery (3) electric connection, fixed mounting has fan blade (24) in the pivot of motor (23), the length of fan blade (24) is greater than the interval between both sides through-hole (19), the below threaded connection of output cover (20) has activated carbon dish (25), and the quantity of activated carbon dish (25) is two, sets up relatively.

9. The multifunctional environment-friendly energy-saving air filtering device as claimed in claim 1, is characterized in that: the utility model discloses a storage battery, including box (4), electric putter (15), handrail (2), electric putter (3), the slot that sets up in the slope is seted up to the inner wall below of box (4), and draws material otter board (26) to peg graft in the slot, the right wall of box (4) has seted up the discharge gate relative to drawing material otter board (26) right-hand member position, and the discharge gate is located debris collecting box (5) directly over, electric putter (15) and battery (3) electric connection, switch electric connection on battery (3) and handrail (2) antetheca.

10. The use method of the multifunctional environment-friendly energy-saving air filtering device is characterized by comprising the following steps: the method comprises the following steps:

the first step is as follows: a first switch is arranged above the front wall of the handrail (2), the storage battery (3) transmits electric quantity to the motor (23) at the moment, so that the motor (23) drives the fan blades (24) to rotate, through the matching of the delivery pipe (9), the hose (10), the dust suction pipe (12) and the dust suction disc (13), the dust can be absorbed, the absorbed dust is conveyed to the inside of the water tank (27) through the dust absorption cover (18), the fixed ring (17) and the output cover (20), when the dust enters the material guiding screen plate (26), impurities in the dust are filtered by the material guiding screen plate (26), the dust enters the water tank (27) through the material guiding screen plate (26) and is mixed with rainwater, meanwhile, sundries slide to the right side through the material guiding screen plate (26) and then enter the sundries collecting box (5) through the material outlet for collection, and toxic gas in dust can move upwards and is filtered through the activated carbon disc (25);

the second step is that: the positions of the base (1) and the box body (4) can be moved by pushing the handrail (2), and the dust suction pipe (12) and the dust suction disc (13) can absorb dust at different positions;

the third step: the second switch arranged above the front wall of the handrail (2) is adjusted, so that the storage battery (3) supplies electricity to the electric push rod (15), the electric push rod (15) adjusts the angles of the dust suction pipe (12) and the dust suction disc (13) left and right at the moment, dust at different positions can be absorbed, and meanwhile, the dust is classified and collected according to the method of the first step;

the fourth step: door plant (6) are pulled to the left side for stopper (7) and spacing groove (8) produce and break away from, can open door plant (6), can clear up water tank (27) inside this moment, can clear up the remaining debris on drawing material otter board (26) simultaneously, can change and wash activated carbon dish (25) in addition, and can clear up the inside debris of debris collecting box (5).

Technical Field

The invention relates to the technical field of air filtering devices, in particular to a multifunctional environment-friendly energy-saving air filtering device and a using method thereof.

Background

Use interior decoration as an example, when painting the wall, need carry out the compounding to coating, because coating can produce a large amount of dust when the compounding, lead to the dust to diffuse in the room air, interior decoration has some coating to volatilize toxic gas simultaneously, need after the fitment is accomplished the room several months of stewing then can live in, can diffuse in the air at the in-process toxic gas of flavor diffusing, cause the injury to the human body, and diffuse dust causes the injury to the user health, do not have fine interior decoration air filter at present, can not collect and have the toxic gas to get rid of well the dust.

Therefore, the invention provides the multifunctional environment-friendly energy-saving air filtering device and the use method thereof, which are convenient for better collecting dust and can better remove indoor volatile toxic gas.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a multifunctional environment-friendly energy-saving air filtering device and a using method thereof, which have the advantages of convenient position movement, labor reduction, capability of carrying out multi-angle dust collection on different indoor positions, dust and sundries filtration and collection, capability of filtering toxic gas volatilized from dust and the like, and solve the problems of pollution and damage of indoor paint to human bodies and air.

In order to realize the purposes of conveniently moving the position, reducing manpower, performing multi-angle dust collection on different indoor positions, filtering and collecting dust and sundries and filtering toxic gas volatilized in the dust, the invention provides the following technical scheme: a multifunctional environment-friendly energy-saving air filtering device comprises a base, wherein a handrail is fixedly arranged on the left side of the top of the base, a storage battery, a box body and a sundry collecting box are sequentially and fixedly arranged on the top of the base from left to right, a door plate is hinged on the left side of the front wall of the box body, a limiting block is fixedly arranged on the right side of one side face of the door plate relative to the box body, a limiting groove is formed in the position of the front wall of the box body relative to the limiting block, the limiting block is inserted in the limiting groove, conveying pipes are fixedly arranged on the front and back of the top of the box body, a hose is fixedly arranged on the top of the conveying pipes, a mounting part is fixedly arranged on the top of the box body relative to the hose, the conveying pipes and the hose movably penetrate through the middle position of the mounting, connecting pieces are fixedly arranged at opposite positions of the opposite surface of the dust collection pipe and the top of the box body, and an electric push rod is hinged between the connecting pieces;

the dust collection device is fixedly mounted at the top end inside the box body, an activated carbon disc is connected to the lower portion of the dust collection device in a threaded mode, a material guiding screen plate is inserted and connected to the lower portion of the inner wall of the box body, and a water tank is mounted at the bottom end inside the box body.

Preferably, the bottom of base is fixed mounting all around has the universal wheel, and is provided with arresting gear on the universal wheel, the handrail is L shape structure, and two switches of relative setting are installed to the antetheca top of handrail.

Preferably, a square-clip-shaped pull ring is fixedly mounted on the right side of the front wall of the door plate, the limiting block is matched with the limiting groove, and the bottom end of the conveying pipe extends into the box body.

Preferably, the conveyer pipe is two rows, and every row is no less than three, the hose is flexible hose, the installed part is the U-shaped structure.

Preferably, the two sides of the dust suction pipe are arranged above the inner side of the mounting part through the matching of the rotating shaft and the bearing, and the connecting piece is of a U-shaped structure.

Preferably, dust extraction includes solid fixed ring, solid fixed ring has been placed to the inboard of box, gu fixed ring's top fixed mounting has the suction hood, and the through-hole that sets up relatively with the conveyer pipe is seted up at the top of suction hood, and conveyer pipe fixed mounting is in the inside of through-hole.

Preferably, the bottom fixed mounting of solid fixed ring has the output cover, and the output cover is the funnel structure, the both sides inner wall fixed mounting of output cover has the bracing piece that the slope set up, and fixed mounting has the stop collar between the bracing piece.

Preferably, the motor is installed in the limiting sleeve through screws, the motor is electrically connected with the storage battery, the fan blades are fixedly installed on a rotating shaft of the motor, the length of each fan blade is larger than the distance between the through holes in the two sides, the activated carbon discs are connected to the lower portion of the output cover in a threaded mode, and the two activated carbon discs are arranged oppositely.

Preferably, the inner wall of the box body is provided with an inclined slot below, the material guiding screen plate is inserted into the slot, the right wall of the box body is provided with a discharge port opposite to the right end of the material guiding screen plate, the discharge port is positioned right above the sundries collecting box, the electric push rod is electrically connected with the storage battery, and the storage battery is electrically connected with a switch on the front wall of the handrail.

The invention also provides a use method of the multifunctional environment-friendly energy-saving air filtering device, which comprises the following steps:

the first step is as follows: the first switch is arranged above the front wall of the handrail, the storage battery conveys electric quantity to the motor at the moment, so that the motor drives the fan blade to rotate, dust can be absorbed through the matching of the conveying pipe, the hose, the dust absorption pipe and the dust absorption disc, the absorbed dust is conveyed to the inside of the water tank through the dust absorption cover, the fixing ring and the output cover, when the dust enters the material guiding screen plate, impurities in the dust are filtered by the material guiding screen plate, the dust enters the water tank through the material guiding screen plate and is mixed with rainwater, meanwhile, the impurities slide to the right side through the material guiding screen plate and enter the impurity collection box through the discharge port to be collected, and toxic gas in the dust can move upwards and is filtered through the activated carbon disc;

the second step is that: the positions of the base and the box body can be moved by pushing the handrail, and the dust suction pipe and the dust suction disc can absorb dust at different positions;

the third step: through adjusting the second switch of handrail antetheca top installation for the battery provides the electric quantity to electric putter, and electric putter adjusts the angle of dust absorption pipe and dust absorption dish about this moment, can absorb the dust of different positions, can carry out the classified collection with the dust according to the method of first step simultaneously.

The fourth step: stimulate the door plant to the left side for stopper and spacing groove produce and break away from, can open the door plant, can clear up water tank inside this moment, can clear up drawing remaining debris on the material otter board simultaneously, can change and wash the active carbon dish moreover, and can clear up the inside debris of debris collecting box.

Compared with the prior art, the invention has the following beneficial effects:

1. the universal wheels are fixedly arranged on the periphery of the bottom of the base, so that the positions of the base and the box body can be moved and positioned conveniently through the handrails, and the use is convenient.

2. There is the battery at the top left side fixed mounting of base, be convenient for provide the electric quantity to electric putter and motor through the battery, make electric putter and motor normally work, top fixed mounting at solid fixed ring has the suction hood, be convenient for absorb the dust in the suction hood and deposit, bottom fixed mounting at solid fixed ring has the output cover, be convenient for carry the dust downwards through the output cover, there is the bracing piece at the inside fixed mounting of output cover, be convenient for carry on spacing fixed to the stop collar, better pass through the screw with the motor spacing in the stop collar, fixed mounting has the fan blade in the pivot of motor, better inhale the dust through the fan blade in the suction hood.

3. Fixed mounting has the conveyer pipe in the through-hole, be convenient for adsorb the dust hood through the conveyer pipe in with the dust, there is the hose at the top fixed mounting of conveyer pipe, be convenient for through the hose, dust absorption pipe and dust absorption dish, inhale the conveyer pipe with the dust, the hose can play the effect of buckling simultaneously, be difficult for receiving the damage, it has electric putter to articulate between the connecting piece, can adjust the angle of dust absorption pipe and dust absorption dish through electric putter, be convenient for absorb the dust of different positions.

4. There is the activated carbon dish bottom threaded connection at the output cover, be convenient for change and wash the activated carbon dish, the activated carbon dish can filter the toxic gas in the dust simultaneously, it has the material otter board of drawing that the slope set up to peg graft in the inner wall below of box, be convenient for filter the debris in the dust, debris enter into the debris collecting box through drawing material otter board and discharge gate simultaneously and collect, have placed the water tank in the inside bottom of box, be convenient for collect the water tank with the dust.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a right side view of the box structure of the present invention;

FIG. 3 is an expanded view of the box structure of the present invention;

FIG. 4 is a schematic view of the dust collector of the present invention;

FIG. 5 is a sectional view of the dust collector of the present invention;

FIG. 6 is a schematic view of a structure of a feeding net plate according to the present invention.

Wherein the figures include the following reference numerals:

1. a base; 2. a handrail; 3. a storage battery; 4. a box body; 5. a sundries collecting box; 6. a door panel; 7. a limiting block; 8. a limiting groove; 9. a delivery pipe; 10. a hose; 11. a mounting member; 12. a dust collection pipe; 13. a dust collection tray; 14. a connecting member; 15. an electric push rod; 16. a dust collection device; 17. a fixing ring; 18. a dust hood; 19. a through hole; 20. an output cover; 21. a support bar; 22. a limiting sleeve; 23. a motor; 24. a fan blade; 25. an activated carbon disk; 26. a material guiding screen plate; 27. a water tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides the following technical solutions: a multifunctional environment-friendly energy-saving air filtering device comprises a base 1, universal wheels are fixedly arranged on the periphery of the bottom of the base 1, a braking device is arranged on each universal wheel, the positions of the base 1 and a box body 4 can be moved and positioned conveniently through a handrail 2, the use is convenient, the handrail 2 is fixedly arranged on the left side of the top of the base 1, the handrail 2 is of an L-shaped structure, two switches which are oppositely arranged are arranged above the front wall of the handrail 2, a storage battery 3, the box body 4 and a sundries collecting box 5 are fixedly arranged on the top of the base 1 from left to right in sequence, electric quantity is conveniently supplied to an electric push rod 15 and a motor 23 through the storage battery 3, the electric push rod 15 and the motor 23 work normally, the storage battery 3 is electrically connected with the switches on the front wall of the handrail 2, a slot which is obliquely arranged is arranged below the inner wall of the, the right end of the right wall of the box body 4 opposite to the material guiding screen plate 26 is provided with a discharge port, the discharge port is positioned right above the sundry collecting box 5, the left side of the front wall of the box body 4 is hinged with a door plate 6, the right side of the front wall of the door plate 6 is fixedly provided with a reversed-square-shaped pull ring, the right side of one side surface of the door plate 6 opposite to the box body 4 is fixedly provided with a limiting block 7, the limiting block 7 is matched with the limiting groove 8, the position of the front wall of the box body 4 opposite to the limiting block 7 is provided with a limiting groove 8, the limiting block 7 is inserted in the limiting groove 8, the front and the back of the top of the box body 4 are fixedly provided with conveying pipes 9, dust is conveniently adsorbed into a dust hood 18 through the conveying pipes 9, the bottom ends of the conveying pipes 9 extend into the box body 4, the conveying pipes 9 are, meanwhile, the hose 10 can play a role in bending and is not easy to be damaged, the hose 10 is a telescopic hose, a mounting part 11 is fixedly arranged at the top of the box body 4 relative to the position of the hose 10, the conveying pipe 9 and the hose 10 movably penetrate through the middle position of the mounting part 11, the mounting part 11 is of a U-shaped structure, a dust suction pipe 12 is movably arranged on the inner side of the mounting part 11, two sides of the dust suction pipe 12 are arranged above the inner side of the mounting part 11 through the matching of a rotating shaft and a bearing, the hose 10 and the dust suction pipe 12 are fixedly connected to form a penetrating structure, a dust suction disc 13 is fixedly arranged at the top of the dust suction pipe 12, a connecting part 14 is fixedly arranged at the relative position of the opposite surface of the dust suction pipe 12 and the top of the box body 4, the connecting part 14 is of the U-shaped structure, an electric push rod 15 is, the electric push rod 15 is electrically connected with the storage battery 3;

the inside top fixed mounting of box 4 has dust extraction 16, dust extraction 16 includes solid fixed ring 17, gu fixed ring 17 has been placed to the inboard of box 4, gu fixed ring 17's top fixed mounting has suction hood 18, be convenient for absorb the dust in suction hood 18 and deposit, and the through-hole 19 that sets up with conveyer pipe 9 relative is seted up at the top of suction hood 18, and conveyer pipe 9 fixed mounting is in the inside of through-hole 19, gu fixed ring 17's bottom fixed mounting has output cover 20, be convenient for carry the dust downwards through output cover 20, and output cover 20 is the funnel structure, output cover 20's both sides inner wall fixed mounting has the bracing piece 21 that the slope set up, be convenient for carry out spacing fixed to stop collar 22, better with motor 23 through the screw spacing in stop collar 22, and fixed mounting has stop collar 22 between the bracing piece 21, motor 23 is installed through the screw in the inside of stop collar 22, the motor 23 is electrically connected with the storage battery 3, the fan blades 24 are fixedly arranged on the rotating shaft of the motor 23, dust is better sucked into the dust hood 18 through the fan blades 24, the length of the fan blades 24 is larger than the distance between the through holes 19 at the two sides, an activated carbon disk 25 is connected with the lower part of the output cover 20 through threads, and the number of the activated carbon discs 25 is two, the two activated carbon discs are oppositely arranged, so that the activated carbon discs 25 can be conveniently replaced and cleaned, meanwhile, the activated carbon disc 25 can filter toxic gas in dust, the activated carbon disc 25 is connected below the dust collection device 16 in a threaded manner, the material guiding screen plate 26 is inserted below the inner wall of the box body 4, so that impurities in the dust can be conveniently filtered, meanwhile, sundries enter the sundries collecting box 5 through the material guiding screen plate 26 and the material outlet to be collected, and the water tank 27 is installed at the bottom end inside the box body 4, so that dust can be conveniently collected in the water tank 27.

A use method of the multifunctional environment-friendly energy-saving air filtering device comprises the following steps:

the first step is as follows: a first switch is arranged above the front wall of the handrail 2, at the moment, the storage battery 3 conveys electricity to the motor 23, the motor 23 drives the fan blades 24 to rotate, the dust can be absorbed through the matching of the conveying pipe 9, the hose 10, the dust suction pipe 12 and the dust suction disc 13, the absorbed dust is conveyed into the water tank 27 through the dust suction cover 18, the fixing ring 17 and the output cover 20, when the dust enters the material guiding screen 26, impurities in the dust are filtered by the material guiding screen 26, the dust enters the water tank 27 through the material guiding screen 26 to be mixed with rainwater, meanwhile, the impurities slide to the right side through the material guiding screen 26 and then enter the impurity collecting box 5 through the discharge port to be collected, and toxic gas in the dust can move upwards and is filtered through the activated carbon disc 25;

the second step is that: the positions of the base 1 and the box body 4 can be moved by pushing the handrail 2, and the dust suction pipe 12 and the dust suction disc 13 can absorb dust at different positions;

the third step: through adjusting the second switch of 2 antethecas tops of handrail for battery 3 provides the electric quantity to electric putter 15, and electric putter 15 is controlled and is adjusted the angle of dust absorption pipe 12 and dust absorption dish 13 this moment, can absorb the dust of different positions, can carry out categorised collection with the dust according to the method of first step simultaneously.

The fourth step: with door plant 6 to the left side pulling for stopper 7 and spacing groove 8 produce and break away from, can open door plant 6, can clear up 27 inside water tanks this moment, can clear up drawing remaining debris on the material otter board 26 simultaneously, can change and wash activated carbon dish 25 in addition, and can clear up the inside debris of debris collecting box 5.

It is to be noted that, in the present invention, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.