A backpack type air high-efficiency purification device
By using components such as a water tank, water pump, and servo motor in the air purification device, efficient separation and mixing of medicine and water are achieved, solving the problems of active ingredient failure and uneven mixing, and improving air purification efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FIRST AFFILIATED HOSPITAL OF NAVAL MEDICAL UNIVERSITY OF CHINESE PEOPLES LIBERATION ARMY
- Filing Date
- 2025-06-25
- Publication Date
- 2026-07-03
AI Technical Summary
In existing air purification devices, the active ingredients are prone to failure and uneven mixing when preparing air purification liquid, resulting in low purification efficiency.
The system uses components such as a water tank, water pump, servo motor, and double spiral hose. The water pump drives the water and medicine solution to mix separately, and the servo motor controls the mixing ratio of medicine solution and water to ensure uniform mixing before spraying.
It improves the preparation efficiency and purification effect of air purification liquid, reduces the failure of active ingredients, ensures uniform distribution of the liquid, and improves air purification efficiency.
Smart Images
Figure CN224454826U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air purification technology, and in particular to a backpack-type high-efficiency air purification device. Background Technology
[0002] There are a large number of air pollutants in public places, including particulate matter, volatile organic compounds and microorganisms. In order to protect people in public places, it is usually necessary to purify the air. Since some active ingredients in commonly used air purification solutions are easily oxidized or agglomerated and become ineffective, air purification solutions usually need to be prepared and used immediately.
[0003] Existing air purification devices typically require the air purification solution to be mixed in a certain ratio before use and then sprayed. When too much air purification solution is mixed, the spraying time is too long, and some active ingredients in the air purification solution are easily deactivated during the spraying process, resulting in poor subsequent air purification effect and low air purification efficiency. Furthermore, when using existing air purification devices to mix air purification solution, staff usually directly pour high-concentration solution and water into the storage tank and then simply shake the tank. Because there is too much solution and water in the tank, simple shaking cannot ensure that the solution and water are fully mixed, resulting in large local concentration differences in the prepared air purification solution. The effective ingredients in the solution cannot be evenly distributed in the prepared air purification solution, further reducing the air purification efficiency. Utility Model Content
[0004] To overcome the above-mentioned shortcomings, the technical problem of this utility model is to provide a backpack-type high-efficiency air purification device that facilitates the preparation of air purification liquid during spraying, reduces the loss rate of active ingredients in the air purification liquid, and promotes thorough mixing of the liquid and water, thereby improving air purification efficiency.
[0005] Technical Solution: A backpack-type high-efficiency air purification device, comprising: a water tank, a shoulder strap, a connecting pipe, a water pump, a handle, a clamping ring, a telescopic pipe, a spiral ring, a medicine storage component, an injection component, and a spraying component; the shoulder strap is rotatably connected to the water tank; one end of the connecting pipe is fixed to the water tank; the water pump is fixed inside the water tank, and one end of the connecting pipe is connected to the outlet of the water pump; the handle is fixed to the other end of the connecting pipe; the clamping ring is fixed to the upper end of the handle; the telescopic pipe is slidably connected to the inside of the clamping ring; the spiral ring is threadedly connected to the clamping ring; the medicine storage component is located on the handle; the injection component is located on the handle; the spraying component is located on the handle and is connected to the telescopic pipe.
[0006] Furthermore, it is particularly preferred that the liquid medicine storage assembly includes: a placement frame fixed to the handle; a flow guide frame fixed to the lower part of the handle; a medicine storage bottle placed inside the placement frame, the lower end of the medicine storage bottle having a medicine outlet, and the lower end of the medicine storage bottle being threadedly connected to the flow guide frame; an air inlet pipe fixed to the flow guide frame, the upper end of the air inlet pipe being located inside the medicine storage bottle; an air inlet check valve fixed to the upper end of the air inlet pipe; and a separation check valve fixed inside the flow guide frame.
[0007] Furthermore, it is particularly preferred that the injection assembly includes: a servo motor fixedly connected to the lower end of the grip; a connecting frame fixedly connected to the lower part of the guide frame, with the interior of the connecting frame communicating with the interior of the guide frame, and the other end of the connecting tube communicating with the interior of the connecting frame; a drive shaft rotatably connected to the connecting frame, passing through the grip and fixedly connected to the output shaft of the servo motor; a rotating disk fixedly connected to the middle of the drive shaft, with the rotating disk in contact with part of the inner wall of the connecting frame; several sliders slidably connected to the rotating disk; a return spring connected between each of the sliders and the rotating disk; and a compression ring fixedly connected to the upper inner wall of the connecting frame, with an arc-shaped protrusion on the compression ring.
[0008] Furthermore, it is particularly preferred that the spraying assembly includes: a double-helix hose, the lower end of which is rotatably connected to the other end of the connecting pipe; a straight pipe, fixed to the inside of the handle, the lower end of which is rotatably connected to the upper end of the double-helix hose; a support block, fixed to the upper part of the telescopic pipe; a guide pipe, fixed to the support block, the guide pipe and the straight pipe being slidably connected and communicating with each other; a bend, rotatably connected to the upper end of the guide pipe; and a nozzle, fixed to the upper end of the bend.
[0009] Furthermore, it is particularly preferred that an auxiliary mixing assembly is also included, which is located on the inner side of the grip. The auxiliary mixing assembly includes: a pinion fixed to the upper end of the drive shaft; two brackets, both fixed to the inner side of the grip; a transmission frame rotatably connected between the two brackets; a spur gear ring fixed to the lower end of the transmission frame; a limiting block fixed to the middle of the double helical hose, and the limiting block is slidably connected to the middle of the transmission frame; and a support ring fixed to the inner side of the grip, with the support ring in contact with the limiting block.
[0010] Furthermore, it is particularly preferred that the device also includes several protrusions fixed to the support ring.
[0011] Furthermore, it is particularly preferred that two diagonal strips are fixed to the inside of the bend.
[0012] This utility model has the following advantages:
[0013] 1. The water pump drives the water in the storage tank to flow upwards along the connecting pipe, connecting frame, double spiral hose, straight pipe, guide pipe, and bend pipe. The servo motor output shaft reverses, driving the drive shaft, rotating disk, slider, and return spring to reverse. Water in the connecting frame cannot enter the area between the slider and the rotating disk away from the drive shaft, thus separating the medicine and water, reducing the dilution and contamination of the medicine by water, thereby reducing the error in the concentration of the injected medicine, and thus more accurately dispensing the air purification liquid, maintaining efficient air purification. Then the slider and rotating disk continue to reverse, and the drive shaft, rotating disk, slider, and return spring reverse to continuously inject the medicine in the guide frame and medicine bottle into the water in the connecting frame. As the water mixed with medicine is transported upwards along the double spiral hose, straight pipe, guide pipe, and bend pipe, the medicine and water mix to form the air purification liquid, which is then sprayed into the air through the nozzle to purify the air.
[0014] 2. The reverse rotation of the pinion drives the transmission frame, spur gear ring, limiting block, and double-helix hose to rotate clockwise. The clockwise rotation of the double-helix hose causes the medicine and water inside the hose to rotate clockwise as well. During the reverse rotation of the limiting block, several protrusions press against the limiting block, causing it to move up and down intermittently. This up-and-down movement of the limiting block causes the double-helix hose to expand and contract, resulting in deformation. This expansion and contraction during the clockwise rotation of the double-helix hose agitates the medicine and water inside, promoting mixing and ensuring more thorough mixing. This allows the effective components in the medicine to be evenly distributed within the prepared air purification liquid, thereby improving the subsequent air purification efficiency. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0016] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention.
[0017] Figure 3 This is a partial three-dimensional structural diagram of the drug storage component of this utility model.
[0018] Figure 4 This is a partial cross-sectional perspective view of the three-dimensional structure of the liquid medicine storage component and the spraying component of this utility model.
[0019] Figure 5 This is a partial cross-sectional perspective view of the three-dimensional structure of the drug storage component, injection component, spraying component, and auxiliary mixing component of this utility model.
[0020] Figure 6 This is a partial cross-sectional perspective view of the three-dimensional structure of the drug storage component, injection component, and auxiliary mixing component of this utility model.
[0021] Figure 7This is a partial three-dimensional structural diagram of the injection component and pinion of this utility model.
[0022] Figure 8 This is a partial cross-sectional perspective view of the injection component of this utility model.
[0023] Figure 9 This is a partial three-dimensional structural diagram of the injection component of this utility model.
[0024] Figure 10 This is a partial three-dimensional structural diagram of the spraying component of this utility model.
[0025] Figure 11 This is a partial cross-sectional perspective view of the spraying component and the inclined strip of this utility model.
[0026] Figure 12 This is a partial three-dimensional structural diagram of the drug storage component and the spraying component of this utility model.
[0027] The meanings of the reference numerals in the diagram are as follows: 1: Water tank; 201: Shoulder strap; 202: Connecting pipe; 203: Water pump; 2: Handle; 21: Telescopic pipe; 22: Clamping ring; 23: Spiral ring; 61: Placement frame; 62: Flow guide frame; 63: Medicine bottle; 64: Air inlet pipe; 65: Air inlet check valve; 66: Separating check valve; 601: Servo motor; 602: Connecting frame; 603: Drive shaft; 604: Rotating disk; 605: Slider; 606: Return spring; 607: Compression ring; 71: Double spiral hose; 72: Straight pipe; 73: Support block; 74: Flow guide pipe; 75: Bend; 76: Nozzle; 81: Pinion; 82: Bracket; 83: Transmission frame; 84: Straight gear ring; 85: Limiting block; 86: Support ring; 9: Protrusion; 10: Diagonal strip. Detailed Implementation
[0028] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "straight," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] Example 1: A backpack-type high-efficiency air purification device, such as Figures 1-12 As shown, it includes: a water tank 1, a shoulder strap 201, a connecting pipe 202, a water pump 203, a handle 2, a clamping ring 22, a telescopic pipe 21, a spiral ring 23, a medicine storage assembly, an injection assembly, and a spraying assembly.
[0032] The carrying strap 201 is rotatably connected to the water tank 1, serving as a fixed component for the human body carrying style.
[0033] The water pump 203 is bolted to the inside of the water storage tank 1. One end of the connecting pipe 202 is fixed to the water storage tank 1, and the other end of the connecting pipe 202 is connected to the outlet of the water pump 203.
[0034] The grip 2 is fixed to the other end of the connecting pipe 202. The clamping ring 22 can be fixedly connected to the upper end of the grip 2 by welding or other means. The telescopic pipe 21 is slidably connected to the inside of the clamping ring 22, and the extension length of the telescopic pipe 21 can be adjusted. The spiral ring 23 is threadedly connected to the clamping ring 22. The clamping ring 22 can be made of flexible material or designed as a conventional peripheral slotted structure. By cooperating with the spiral ring 23 and the clamping ring 22, the telescopic pipe 21 can be fixed in the current position.
[0035] The liquid medicine storage component, injection component, and spraying component are all mounted on the handle 2. The liquid medicine storage component is used to store the liquid medicine, the injection component is used to inject the liquid medicine into water, and the spraying component is connected to the telescopic tube 21 and is used to spray the air purification liquid.
[0036] The medicine storage assembly includes: a placement frame 61, bolted to the handle 2; a flow guide frame 62, bolted to the lower part of the handle 2; a medicine storage bottle 63, placed inside the placement frame 61, with a medicine outlet at the lower end of the medicine storage bottle 63, and the lower end of the medicine storage bottle 63 is threadedly connected to the flow guide frame 62; an air inlet pipe 64, welded to the flow guide frame 62, with the upper end of the air inlet pipe 64 located inside the medicine storage bottle 63; an air inlet one-way valve 65, fixed to the upper end of the air inlet pipe 64; and a separation one-way valve 66, fixed to the flow guide frame 62.
[0037] The injection assembly includes: a servo motor 601, bolted to the lower end of the grip 2; a connecting frame 602, bolted to the lower part of the guide frame 62, with the interior of the connecting frame 602 communicating with the interior of the guide frame 62, and the other end of the connecting pipe 202 communicating with the interior of the connecting frame 602; a drive shaft 603, rotatably connected to the connecting frame 602, passing through the grip 2 and fixedly connected to the output shaft of the servo motor 601; a rotating disk 604, welded to the middle of the drive shaft 603, with the rotating disk 604 in contact with part of the inner wall of the connecting frame 602; several sliders 605, slidably connected to the rotating disk 604; and a return spring 606 connected to each of the sliders 605 and the rotating disk 604 via hooks; and a compression ring 607, welded to the upper inner wall of the connecting frame 602, with an arc-shaped protrusion on the compression ring 607.
[0038] The spraying assembly includes: a double-helix hose 71, the lower end of which is rotatably connected to the other end of the connecting pipe 202; a straight pipe 72, welded to the inside of the handle 2, the lower end of the straight pipe 72 being rotatably connected to the upper end of the double-helix hose 71; a support block 73, welded to the upper part of the telescopic pipe 21; a guide pipe 74, welded to the support block 73, the guide pipe 74 being slidably connected to the straight pipe 72, and the guide pipe 74 communicating with the straight pipe 72; a bend 75, rotatably connected to the upper end of the guide pipe 74; and a nozzle 76, fixedly connected to the upper end of the bend 75.
[0039] The connecting pipe 202, connecting frame 602, double spiral hose 71, straight pipe 72, guide pipe 74, bend pipe 75 and nozzle 76 are connected.
[0040] Initially, the staff injects a certain amount of water into the water tank 1. The staff then unscrews the medicine bottle 63, separating it from the guide frame 62. A certain amount of medicine is then injected into the medicine bottle 63. The staff then reconnects the medicine bottle 63 to the guide frame 62, allowing some of the medicine in the medicine bottle 63 to enter the guide frame 62. Some of the medicine in the guide frame 62 flows towards the connecting frame 602 through the separating one-way valve 66. The separating one-way valve 66 prevents some of the medicine in the guide frame 62 from flowing away from the connecting frame 602. The staff uses the shoulder strap 201 to carry the water tank 1 on their back, and holds the handle 2 to keep the outlet of the medicine bottle 63 lower than the body of the bottle. The staff then starts the water pump 203 and the servo motor 60. 1. Water pump 203 drives water in water storage tank 1 to be transported upward along connecting pipe 202, connecting frame 602, double spiral hose 71, straight pipe 72, guide pipe 74 and bend pipe 75. Servo motor 601 output shaft reverses, driving drive shaft 603, rotating disk 604, slider 605 and return spring 606 to reverse. When slider 605 reverses to separate from the arc-shaped protrusion of extrusion ring 607, return spring 606 rebounds, causing slider 605 to move towards drive shaft 603. Part of the medicine in guide frame 62 enters the cavity between the side of slider 605 away from drive shaft 603 and rotating disk 604. When slider 605 continues to reverse to the side away from guide frame 62, the side of slider 605 away from drive shaft 603 and rotating disk 604 are separated. Part of the liquid medicine in the cavity between 04 mixes with the water in the connecting frame 602. When the slider 605 continues to reverse until it contacts the arc-shaped protrusion of the extrusion ring 607 again, the arc-shaped protrusion of the extrusion ring 607 extrudes the slider 605 and moves it away from the drive shaft 603. The side of the slider 605 away from the drive shaft 603 is flush with the outer side of the rotating disk 604. The return spring 606 is compressed, and the water in the connecting frame 602 cannot enter the space between the side of the slider 605 away from the drive shaft 603 and the rotating disk 604. This separates the liquid medicine and water, reducing the dilution and contamination of the liquid medicine by water, thereby reducing the error in the concentration of the injected liquid medicine, and thus more accurately dispensing the air purification liquid, maintaining efficient air purification. Then the slider 605 and the rotating disk 604... 4. Continue reversing the flow. The drive shaft 603, rotating disk 604, slider 605, and return spring 606 reverse the flow, continuously injecting the liquid medicine from the guide frame 62 and the medicine storage bottle 63 into the water in the connecting frame 602. As the water mixed with the medicine is transported upwards along the double-helix hose 71, straight pipe 72, guide pipe 74, and bend pipe 75, the medicine and water mix to form an air purification solution. This solution is then sprayed into the air through the nozzle 76 to purify the air. When the medicine storage bottle 63 decreases, a negative pressure is created inside. Air enters the medicine storage bottle 63 through the air inlet pipe 64 and the one-way air inlet valve 65, reducing the negative pressure inside the bottle and facilitating the continuous outflow of the medicine medicine. When the air purification solution is not needed...The staff shut off water pump 203 and servo motor 601.
[0041] When the air purification liquid is not needed for an extended period, the operator turns on the water pump 203. The water pump 203 drives the water in the water tank 1 to flow upwards along the connecting pipe 202, connecting frame 602, double spiral hose 71, straight pipe 72, guide pipe 74, and bend pipe 75, and then sprays it out through the nozzle 76. The operator then turns off the water pump 203 to reduce the amount of liquid residue in the connecting pipe 202, double spiral hose 71, straight pipe 72, guide pipe 74, bend pipe 75, and nozzle 76, thereby reducing the oxidation or corrosion of the connecting pipe 202, double spiral hose 71, straight pipe 72, guide pipe 74, bend pipe 75, and nozzle 76 by the liquid.
[0042] Staff members adjust the mixing ratio of injected medicine and water by controlling the suction power of water pump 203 and the rotation speed of servo motor 601, thereby preparing air purification liquid according to different medicines or different usage needs.
[0043] Example 2: Based on Example 1, such as Figure 5 and Figure 6 As shown, it also includes an auxiliary mixing component, which is located inside the grip 2. The auxiliary mixing component includes: a pinion 81, connected to the upper end of the drive shaft 603 via a flat key; two brackets 82, both welded to the inside of the grip 2; a transmission frame 83, rotatably connected between the two brackets 82; a spur gear ring 84, welded to the lower end of the transmission frame 83; a limiting block 85, fixed to the middle of the double helical hose 71, and slidably connected to the middle of the transmission frame 83; and a support ring 86, welded to the inside of the grip 2, in contact with the limiting block 85.
[0044] It also includes several protrusions 9 that are welded to the support ring 86.
[0045] When the output shaft of the servo motor 601 reverses, it drives the transmission shaft 603, rotating disk 604, slider 605, and return spring 606 to reverse. The reverse rotation of the transmission shaft 603 drives the pinion 81 to reverse, which in turn drives the transmission frame 83, spur gear 84, limiting block 85, and double spiral hose 71 to rotate clockwise. The clockwise rotation of the double spiral hose 71 causes the liquid medicine and water inside it to rotate clockwise. During the reverse rotation of the limiting block 85, several protrusions 9 sequentially press against the limiting block 85, causing it to move upwards intermittently. When the limiting block 85 separates from the protrusions 9, the limiting block 85 moves upwards under its own weight. Under the action of force, it moves downward to reset, and repeats this process. Several protrusions 9 press and limit block 85 intermittently move up and down. The up and down movement of limit block 85 causes the double helix hose 71 to stretch and deform. During the clockwise rotation, the double helix hose 71 shakes the medicine and water inside, thereby promoting the mixing of medicine and water inside the double helix hose 71. This allows the medicine and water to mix more thoroughly, so that the effective ingredients in the medicine can be evenly distributed in the prepared air purification liquid, thereby improving the subsequent air purification efficiency.
[0046] Example 3: Based on Example 2, such as Figure 11 As shown, it also includes two diagonal strips 10 that are welded to the inside of the bend 75.
[0047] When the water pump 203 drives the water in the water storage tank 1 to be transported upward along the connecting pipe 202, connecting frame 602, double spiral hose 71, straight pipe 72, guide pipe 74 and bend pipe 75, the water squeezes the inclined strip 10, bend pipe 75 and nozzle 76 to rotate. When the air purification liquid is sprayed, the nozzle 76 rotates around the upper end of the guide pipe 74 and sprays the air purification liquid, thereby increasing the spray range and improving the uniformity of spraying, and further improving the air purification efficiency.
[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.
Claims
1. A backpack-type high-efficiency air purification device, characterized in that, include: Water storage tank (1); The carrying strap (201) is rotatably connected to the water storage tank (1); The connecting pipe (202) is fixed at one end to the water storage tank (1); A water pump (203) is fixed inside a water storage tank (1), and one end of a connecting pipe (202) is connected to the outlet of the water pump (203); The handle (2) is fixed to the other end of the connecting pipe (202); The clamping ring (22) is fixed to the upper end of the grip (2); The telescopic tube (21) is slidably connected to the inside of the clamping ring (22); The spiral ring (23) is threadedly connected to the clamping ring (22); A liquid medicine storage component is provided on the handle (2); An injection component is provided on the grip (2); The spraying assembly is located on the handle (2) and is connected to the telescopic tube (21).
2. The backpack air purification device of claim 1, wherein, The liquid medicine storage assembly includes: a placement frame (61) fixed to the handle (2); a flow guide frame (62) fixed to the lower part of the handle (2); a medicine storage bottle (63) placed in the placement frame (61), with a medicine outlet at the lower end of the medicine storage bottle (63), and the lower end of the medicine storage bottle (63) connected to the flow guide frame (62) by a thread; an air inlet pipe (64) fixed to the flow guide frame (62), with the upper end of the air inlet pipe (64) located inside the medicine storage bottle (63); an air inlet check valve (65) fixed to the upper end of the air inlet pipe (64); and a separation check valve (66) fixed to the flow guide frame (62).
3. A backpack air purification device as claimed in claim 2, wherein, The one-way valve (66) is used to prevent the liquid medicine from flowing back into the medicine storage bottle (63).
4. The backpack air purification device of claim 2, wherein, The injection components include: a servo motor (601), fixed to the lower end of the grip (2); a connecting frame (602), fixed to the lower part of the guide frame (62), with the interior of the connecting frame (602) communicating with the interior of the guide frame (62), and the other end of the connecting pipe (202) communicating with the interior of the connecting frame (602); and a drive shaft (603), rotatably connected to the connecting frame (602), with the drive shaft (603) passing through the grip (2) and connected to the output shaft of the servo motor (601). Fixed connection; rotating disk (604), fixed to the middle of the drive shaft (603), rotating disk (604) is in contact with part of the inner wall of the connecting frame (602); several sliders (605), slidably connected to the rotating disk (604); several sliders (605) and rotating disk (604) are connected with return springs (606); extrusion ring (607), fixed to the inner upper wall of the connecting frame (602), extrusion ring (607) is provided with arc-shaped protrusion.
5. A backpack air purification device as claimed in claim 4, wherein, The spraying assembly includes: a double helical hose (71), the lower end of which is rotatably connected to the other end of the connecting pipe (202); a straight pipe (72), which is fixed to the inside of the handle (2), and the lower end of the straight pipe (72) is rotatably connected to the upper end of the double helical hose (71); a support block (73), which is fixed to the upper part of the telescopic pipe (21); a guide pipe (74), which is fixed to the support block (73), and the guide pipe (74) is slidably connected to the straight pipe (72), and the guide pipe (74) communicates with the straight pipe (72); a bend (75), which is rotatably connected to the upper end of the guide pipe (74); and a nozzle (76), which is fixed to the upper end of the bend (75).
6. A backpack air purification device as claimed in claim 5, wherein, It also includes an auxiliary mixing component, which is located inside the grip (2). The auxiliary mixing component includes: a pinion (81) fixed to the upper end of the drive shaft (603); two brackets (82) fixed to the inside of the grip (2); a transmission frame (83) rotatably connected between the two brackets (82); a spur gear ring (84) fixed to the lower end of the transmission frame (83); a limiting block (85) fixed to the middle of the double spiral hose (71), and the limiting block (85) is slidably connected to the middle of the transmission frame (83); and a support ring (86) fixed to the inside of the grip (2), and the support ring (86) is in contact with the limiting block (85).
7. A backpack air purification device as claimed in claim 6, wherein, It also includes several protrusions (9) that are fixed to the support ring (86).
8. A backpack air purification device as claimed in claim 5, wherein, It also includes two diagonal strips (10) that are fixed to the inside of the bend (75).