A circulating air purification and sterilization device

Abstract

The present invention relates to the technical field of air purification, and particularly relates to a circulating air purification and sterilization device, including a main body. The main body is provided with a treatment tank, an air passing cavity and a sterilization cavity. The air passing cavity is communicated with the treatment tank. The main body is rotatably connected through a bearing to a main shaft. The inner bottom wall of the treatment tank is rotatably connected through a bearing to a rotating seat. The inner bottom wall of the treatment tank is fixedly connected with a column. The column is of a hollow structure and its top wall is fixedly connected through penetration with a first pipe. A plurality of through holes are provided on the side wall of the column. The column is slidably connected through penetration with a filter element. A driving mechanism is arranged in the main body. The driving mechanism is composed of a pneumatic component and a sensing and control component, and is used for driving the whole device. The advantages are as follows: The device of the present invention can automatically monitor the usage condition of the filter element, automatically clean it when it is blocked, ensure the normal use of the filter element, increase the service life of the filter element, avoid frequent replacement, and at the same time, the sterilization effect is more thorough.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and particularly relates to a circulating air purification and sterilization device. Background Art

[0002] With the continuous development of technology and economy, our living standards have been continuously improving. However, the development of technology and economy has brought certain environmental pollution, which has affected the air in our living environment. Therefore, in our daily lives, we need to use devices to purify and sterilize the air. Moreover, not only in daily life, but also in the medical field, since there are patients carrying viruses and bacteria seeking medical treatment in hospitals for a long time, devices are also needed to purify and sterilize the air, remove particulate matter, odors and harmful gases in the air, so as to ensure a good and comfortable indoor environment and avoid the impact of harmful substances in the air on our physical health.

[0003] In the prior art, during the working process of an air purification and sterilization device, generally, the cooperation of a filter element is required to filter substances such as dust in the air. However, during the use of the device, the user cannot timely understand the usage situation of the filter element, so the filter element cannot be cleaned in time, resulting in a reduction in the purification ability of the device. Moreover, the filter element has no self-cleaning ability, and during the use process, the filter element needs to be frequently replaced. Since the machine needs to be opened for replacing the filter element, the replacement of the filter element is also relatively cumbersome. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art, and a circulating air purification and sterilization device is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A circulating air purification and sterilization device includes a main body. The main body is provided with a treatment tank, an air passing cavity and a sterilization cavity. The air passing cavity is communicated with the treatment tank. The main body is rotatably connected through a bearing to a main shaft. The inner bottom wall of the treatment tank is rotatably connected through a bearing to a rotating seat. The inner bottom wall of the treatment tank is fixedly connected with a column. The column is of a hollow structure and its top wall is fixedly connected through penetration with a first pipe. A plurality of through holes are formed in the side wall of the column. The column is slidably connected through penetration with a filter element;

[0007] A driving mechanism is arranged in the main body. The driving mechanism is composed of a pneumatic component and a sensing and control component, and is used for driving the whole device;

[0008] A filter element cleaning mechanism is arranged in the treatment tank. The filter element cleaning mechanism is composed of a knocking component and a rotating brush component, and is used for cleaning the filter element;

[0009] An anti-cleaning mechanism is arranged inside the main body, which is used to perform anti-cleaning on the filter element, and clean and collect the dust on the filter element and the dust in the treatment tank;

[0010] A sterilization mechanism is arranged inside the sterilization cavity, which is used to sterilize the circulating air.

[0011] Furthermore, the pneumatic component includes an air pump, the air pump is fixedly connected through the main body, one end of the air pump is located inside the sterilization cavity, and the other end is located outside the main body. The main body is fixedly connected through a second pipe, and the second pipe connects the sterilization cavity and the air passing cavity. One end of the main shaft extends through and is fixedly connected with a gear in the treatment tank, and the other end extends through and is located in the air passing cavity. A plurality of blades are fixedly connected to the side wall of the main shaft in the air passing cavity.

[0012] Furthermore, the sensing and control component includes a sliding groove, the sliding groove is opened on the inner side wall of the treatment tank, the treatment tank is hermetically slidably connected with a slider through the sliding groove, and a plurality of reset springs are fixedly connected between the slider and the inner top wall of the sliding groove. The cross-sections of the slider and the sliding groove are both annular. The inner side wall of the slider is rotatably connected with a driving ring through a bearing, and a toothed ring is fixedly connected to the lower surface of the driving ring. The toothed ring meshes with the gear.

[0013] Furthermore, the rotary brush component includes a plurality of positioning blocks, the cross-section of the positioning block is L-shaped, the positioning block is fixedly connected to the inner side wall of the rotating seat, and bristles are arranged on the side wall of the positioning block close to the filter element.

[0014] Furthermore, the knocking component includes multiple groups of fixing plates, the fixing plates are fixedly connected to the upper surface of the rotating seat, every two fixing plates are in a group, and a rotating rod is fixedly connected between each group of fixing plates. The rotating rod is rotatably connected through a bearing with a rotating block, and a torsion spring is fixedly connected between the rotating block and the fixing plate. A groove is opened in the rotating block, a rotating wheel is rotatably connected between the inner top wall and the inner bottom wall of the groove, a rubber block is fixedly embedded in the rotating block, and a plurality of convex blocks are fixedly connected to the inner side wall of the treatment tank.

[0015] Furthermore, the anti-cleaning mechanism includes a storage tank, the storage tank is opened inside the main body, the main shaft passes through the storage tank, a plurality of cleaning blocks are fixedly connected to the side wall of the main shaft in the storage tank, bristles are arranged on the side wall of the cleaning block away from the main shaft, a filter screen is hermetically slidably connected in the storage tank, the main body is fixedly connected with a plurality of third pipes, the third pipes connect the treatment tank and the storage tank, a second solenoid valve is arranged in the third pipe, a first solenoid valve is arranged in the first pipe, a delay switch is fixedly embedded in the inner side wall of the treatment tank, the delay switch is connected to the PLC control circuit, and the first solenoid valve, the second solenoid valve, the air pump and the power supply are electrically connected through wires.

[0016] Further, the sterilization mechanism includes a plurality of flow guide plates which are fixedly connected to two inner side walls opposite to the sterilization chamber respectively, and a plurality of ultraviolet lamps are fixedly connected to the top wall and the bottom wall in the sterilization chamber.

[0017] Further, a plurality of operation blocks are fixedly connected to the upper surface of the filter element, and a sealing rubber ring is glued to the side wall of the filter element.

[0018] Further, the cross-section of the column is in a shape of a Chinese character 'hui'.

[0019] Further, rubber pads are glued to the side walls of the rotating seat and the driving ring on the side close to each other.

[0020] The present invention has the following advantages:

[0021] 1. During the use of the device, when the filter element is blocked to a certain extent, the air pump makes the air circulate, which will cause the driving ring to slide upward, increasing the pressure between the driving ring and the rotating seat, causing the rotating seat to rotate. The filter element is knocked by the knocking component and cooperates with the rotating brush component to clean the filter screen, avoiding the influence of the blocked filter element on the air purification effect.

[0022] 2. During the use of the device, the usage condition of the filter element is automatically monitored without manual inspection, making the device more automated.

[0023] 3. During the air circulation, the main shaft is driven to rotate by the blades, converting part of the kinetic energy of the air flow into the kinetic energy of the main shaft rotation. Thus, after the air passes through the blades, the speed decreases. With the setting of the flow guide plates, the residence time of the air in the sterilization chamber is longer, achieving a more thorough sterilization effect.

[0024] 4. While reducing the air circulation speed to improve the sterilization effect, part of the kinetic energy lost due to the speed reduction is used to drive the main shaft to rotate instead of being directly wasted, making the device more energy-saving.

[0025] 5. After the knocking component and the rotating brush component clean the filter element, the delay switch is triggered, changing the power supply direction, so that the air pump changes from air extraction to air pumping. Through the air pumping of the air pump, the dust and impurities cleaned in the treatment tank enter the storage tank through the third pipe. The filter element is further cleaned by air pumping, and at the same time, the cleaned dust and impurities are pumped from the treatment tank into the storage tank for storage, avoiding the dust and impurities in the treatment tank from continuing to block the filter element, ensuring the long-term use of the filter element and reducing the replacement frequency.

[0026] 6. The treatment tank is open to the outside. When replacing the filter element, only the old filter element needs to be removed and a new filter element inserted, without opening the device, making the replacement of the filter element more convenient.

[0027] 7. While the main shaft rotates to drive the driving gear to rotate, it also drives the rotating block to rotate, cleaning the filter screen to prevent the filter screen from being blocked and affecting the smooth entry of dust and impurities into the storage tank;

[0028] 8. The entire device only requires one air pump for driving, making the structure of the device more compact, and without manual control, its automation degree is also higher. Description of the Drawings

[0029] Figure 1 It is a schematic structural diagram of a circulating air purification and sterilization device proposed by the present invention;

[0030] Figure 2 It is a schematic internal structure diagram of a circulating air purification and sterilization device proposed by the present invention;

[0031] Figure 3 It is Figure 2 the enlarged view of A in

[0032] Figure 4 It is a schematic internal structure diagram of the treatment tank in a circulating air purification and sterilization device proposed by the present invention;

[0033] Figure 5 It is Figure 4 the enlarged view of B in

[0034] Figure 6 It is a schematic internal structure diagram of the treatment tank under the cross-section in a circulating air purification and sterilization device proposed by the present invention;

[0035] Figure 7 It is a schematic internal structure diagram of the treatment tank under another cross-section in a circulating air purification and sterilization device proposed by the present invention;

[0036] Figure 8 It is a schematic internal structure diagram of the storage tank in a circulating air purification and sterilization device proposed by the present invention;

[0037] Figure 9 It is a schematic internal structure diagram of the sterilization chamber in a circulating air purification and sterilization device proposed by the present invention;

[0038] Figure 10 It is a schematic circuit connection diagram of a circulating air purification and sterilization device proposed by the present invention.

[0039] In the figure: 1. Main body; 2. Processing tank; 3. Rotating seat; 4. Column; 5. First pipe; 6. Through hole; 7. Filter element; 8. Positioning block; 9. Sliding groove; 10. Slide block; 11. Return spring; 12. Driving ring; 13. Gear ring; 14. Main shaft; 15. Gear; 16. Air passing cavity; 17. Sterilization cavity; 18. Second pipe; 19. Air pump; 20. Fixed plate; 21. Rotating rod; 22. Rotating block; 23. Torsion spring; 24. Rubber block; 25. Groove; 26. Runner; 27. Protrusion; 28. Delay switch; 29. First solenoid valve; 30. Third pipe; 31. Second solenoid valve; 32. Storage tank; 33. Filter screen; 34. Cleaning block; 35. Blade; 36. Deflector; 37. Ultraviolet lamp tube; 38. Operation block. Detailed implementation mode

[0040] Refer to Figure 1-10 , a circulating air purification and sterilization device, including a main body 1, the main body 1 is provided with a processing tank 2, an air passing cavity 16 and a sterilization cavity 17, the air passing cavity 16 is communicated with the processing tank 2, the main body 1 is rotatably connected through a bearing with a main shaft 14, the inner bottom wall of the processing tank 2 is rotatably connected through a bearing with a rotating seat 3, the inner bottom wall of the processing tank 2 is fixedly connected with a column 4, the column 4 is of a hollow structure and its top wall is fixedly connected through and penetrated with a first pipe 5, the side wall of the column 4 is provided with a plurality of through holes 6, the column 4 is slidably connected through and penetrated with a filter element 7, the filter element 7 is slidably connected with the outer wall of the column 4, the filter element 7 is made of plastic and is provided with a plurality of holes, and filter paper is arranged in the holes, which is the prior art and will not be elaborated here;

[0041] A driving mechanism is arranged in the main body 1, and the driving mechanism is composed of a pneumatic component and a sensing control component, which is used for driving the whole device;

[0042] A filter element cleaning mechanism is arranged in the processing tank 2, and the filter element cleaning mechanism is composed of a knocking component and a rotary brush component, which is used for cleaning the filter element 7;

[0043] An anti-cleaning mechanism is arranged in the main body 1, which is used for anti-cleaning the filter element 7, and cleaning and collecting the dust on the filter element 7 and the dust in the processing tank 2;

[0044] A sterilization mechanism is arranged in the sterilization cavity 17, which is used for sterilizing the circulating air.

[0045] The pneumatic component includes an air pump 19, which is fixedly connected to the main body 1 through penetration. One end of the air pump 19 is located inside the sterilization chamber 17, and the other end is located outside the main body 1. The main body 1 is fixedly connected through penetration with a second pipe 18, and the second pipe 18 communicates the sterilization chamber 17 with the air passing chamber 16. One end of the main shaft 14 penetrates and extends into the treatment tank 2 and is fixedly connected through penetration with a gear 15, and the other end penetrates and extends into the air passing chamber 16. A plurality of blades 35 are fixedly connected to the side wall of the main shaft 14 in the air passing chamber 16. When air flows through the blades 35, due to the impact force on the blades 35, the blades 35 are caused to rotate, thereby driving the main shaft 14 to rotate, and converting part of the kinetic energy of the air flow into the kinetic energy of the rotation of the main shaft 14.

[0046] The sensing and control component includes a sliding groove 9, which is opened on the inner side wall of the treatment tank 2. The treatment tank 2 is hermetically slidably connected with a slider 10 through the sliding groove 9. A plurality of return springs 11 are fixedly connected between the slider 10 and the top wall of the sliding groove 9. The cross sections of the slider 10 and the sliding groove 9 are both annular. The inner side wall of the slider 10 is rotatably connected with a driving ring 12 through a bearing. The main body 1 is provided with a hole (not shown in the figure) so that the bottom of the treatment tank 2 communicates with the outside, ensuring that the driving ring 12 for hermetic sliding can freely slide up and down. The inner side wall of the driving ring 12 has a certain inclination, and the outer side wall of the rotating seat 3 also has a certain inclination (such as Figure 3As shown in the figure, the inclination degrees of the two are the same. When the driving ring 12 slides upward and the inclined surface of the driving ring 12 abuts against the inclined surface of the rotating seat 3, the driving ring 12 can drive the rotating seat 3 to rotate through friction. A gear ring 13 is fixedly connected to the lower surface of the driving ring 12, and the gear ring 13 meshes with the gear 15. Rubber pads are glued to the side walls of the rotating seat 3 and the driving ring 12 close to each other. The rubber pads between the two ensure the sealing at the gap between the two on the one hand, and on the other hand, increase the friction between the two. When the driving ring 12 slides upward and applies pressure to the rotating seat 3, the friction between the two increases, so that the driving ring 12 can drive the rotating seat 3 to rotate. It should be noted here that a damping washer is provided at the rotating connection between the rotating seat 3 and the main body 1, so that there is a certain friction between the rotating seat 3 and the main body 1. Due to the existence of this friction, when the driving ring 12 does not apply pressure to the rotating seat 3, the rotation of the driving ring 12 will not drive the rotating seat 3 to rotate. After the filter element 7 has been used for a long time and is blocked to a certain extent, the resistance of the air passing through the filter element 7 increases at this time. If the air pump 19 keeps pumping air, the pressure above the driving ring 12 will decrease, so that the driving ring 12 slides upward. When the driving ring 12 slides upward, it will contact the rotating seat 3 and apply a certain pressure to it. After being blocked to a certain extent, the pressure between the driving ring 12 and the rotating seat 3 enables the driving ring 12 to drive the rotating seat 3 to rotate. At this time, the rotating seat 3 rotates, automatically monitors the usage condition of the filter element 7 during the use of the device, and automatically starts cleaning after being blocked to a certain extent, ensuring the normal use of the filter element 7 and greatly improving the automation degree of the device.

[0047] The rotary brush assembly includes a plurality of positioning blocks 8. The cross-section of the positioning block 8 is L-shaped. The positioning block 8 is fixedly connected to the inner side wall of the rotating seat 3. A brush is provided on the side wall of the positioning block 8 close to the filter element 7. The L-shaped positioning block 8 can limit the filter element 7 to a certain extent, ensure the correct installation of the filter element 7, prevent the filter element 7 from sliding excessively into the treatment tank 2, and the brush on its side wall can clean the surface of the filter element 7 to a certain extent during the rotation of the rotating seat 3.

[0048] The knocking assembly includes multiple groups of fixing plates 20. The fixing plates 20 are fixedly connected to the upper surface of the rotating seat 3. Every two fixing plates 20 form a group, and a rotating rod 21 is fixedly connected between each group of fixing plates 20. The rotating rod 21 is rotatably connected through a bearing to a rotating block 22. A torsion spring 23 is fixedly connected between the rotating block 22 and the fixing plate 20. A groove 25 is formed in the rotating block 22. A rotating wheel 26 is rotatably connected between the inner top wall and the inner bottom wall of the groove 25 through a bearing. A rubber block 24 is fixedly embedded in the rotating block 22. A plurality of convex blocks 27 are fixedly connected to the inner side wall of the treatment tank 2. The shape of the convex block 27 is as Figure 5As shown, its cross-sectional shape is similar to a right triangle with an arc-shaped hypotenuse. When the runner 26 rotates with the rotating seat 3, through contact with the convex block 27, the rubber block 24 rotates around the rotating rod 21. When the runner 26 separates from the convex block 27, under the elastic force of the torsion spring 23, the rubber block 24 rebounds instantaneously. The rotation of the rotating seat 3 drives the rotating block 22 to rotate, so that the runner 26 rotates with it. During the rotation of the runner 26, it contacts the convex block 27, so that the runner 26 gradually moves away from the inner wall of the treatment tank 2, and the rotating block 22 rotates around the rotating rod 21. At the same time, the torsion spring 23 is wound up. When the runner 26 separates from the convex block 27, the elastic force accumulated by the torsion spring 23 is released instantaneously, causing the rotating block 22 to reverse instantaneously, so that the rubber block 24 impacts the filter element 7, causing the filter element 7 to vibrate to a certain extent. Cooperating with the positioning block 8, the filter element 7 is cleaned, and the dust and impurities on its surface are cleaned off and fall on the inner bottom wall of the treatment tank 2. Through the setting of the rotary brush assembly and the knocking assembly, the rotating seat 3 rotates to perform a certain self-cleaning on the filter element 7, ensuring the normal use of the filter element 7.

[0049] The reverse cleaning mechanism includes a storage tank 32, which is opened in the main body 1. The main shaft 14 passes through the storage tank 32. A plurality of cleaning blocks 34 are fixedly connected to the side wall of the section of the main shaft 14 located in the storage tank 32. Brush hairs are arranged on the side wall of the cleaning block 34 away from the main shaft 14. A filter screen 33 is hermetically slidably connected in the storage tank 32. The hermetically slidable filter screen 33 can be freely taken out, which is convenient for cleaning the inside of the storage tank 32 and is also convenient for cleaning the filter screen 33. The main body 1 is fixedly connected with a plurality of third pipes 30, and the third pipes 30 communicate the treatment tank 2 with the storage tank 32. A second solenoid valve 31 is arranged in the third pipe 30, and a first solenoid valve 29 is arranged in the first pipe 5. A delay switch 28 is fixedly embedded in the inner side wall of the treatment tank 2. The delay switch 28 is connected to the PLC control circuit. After the delay switch 28 is pressed, the positive and negative directions of the power supply will change for a period of time and then return to normal. This is a prior art and will not be elaborated here. The first solenoid valve 29, the second solenoid valve 31, the air pump 19 and the power supply are electrically connected through wires. The first solenoid valve 29 and the second solenoid valve 31 are both normally closed solenoid valves and are opened when powered on. The circuit connections of the first solenoid valve 29, the second solenoid valve 31, the air pump 19 and the power supply are as Figure 10As shown, a diode is connected in series with each of the first solenoid valve 29 and the second solenoid valve 31, and they are connected in parallel with each other. Then, they are connected in parallel with the air pump 19, and the directions of the two diodes are opposite. Thus, when the power supply direction changes, the first solenoid valve 29 is de-energized and the second solenoid valve 31 is energized. The air pump 19 is a DC bidirectional air pump, and changing the power supply direction can change its air pumping direction. When the runner 26 passes over the bump 27, the power supply changes the power supply direction. At this time, the first solenoid valve 29 is de-energized and closed, while the second solenoid valve 31 is energized and opened. At the same time, after the air pump 19 changes the power supply direction, the air pumping direction also changes. At this time, the air pump 19 pumps air into the sterilization chamber 17. The pumped air passes through the second pipe 18, the air passing chamber 16 and enters the treatment tank 2, and then passes through the filter element 7 to blow off the dust and impurities attached to the surface of the filter element 7. At this time, the third pipe 30 is in an open state, and the air then carries the cleaned dust and impurities into the storage tank 32 for storage, thereby further deeply cleaning the filter element 7, ensuring the long-term use of the filter element 7, avoiding frequent replacement of the filter element 7, and making the use of the device more convenient.

[0050] The setting of the bump 27 also plays a certain limiting role to limit the reverse rotation of the rotating seat 3 and prevent the runner 26 from triggering the delay switch 28 again during the backwashing process.

[0051] The sterilization mechanism includes a plurality of flow guiding plates 36. The flow guiding plates 36 are respectively fixedly connected to two opposite inner side walls of the sterilization chamber 17. A plurality of ultraviolet lamps 37 are fixedly connected to the inner top wall and the inner bottom wall of the sterilization chamber 17. The flow guiding plates 36 are arranged in a staggered manner (as Figure 9 shown), thus forming a serpentine air flow channel. The ultraviolet lamps 37 are arranged on the channel through which the air flows, thereby increasing the residence time of the air in the sterilization chamber 17, enabling the ultraviolet rays emitted by the ultraviolet lamps 37 to contact the air more fully, and thus achieving a more thorough sterilization effect.

[0052] A plurality of operation blocks 38 are fixedly connected to the upper surface of the filter element 7. The operation blocks 38 are in a shape of a double square (as Figure 2 shown). The filter element 7 can be conveniently pulled out of the treatment tank 2 through the operation blocks 38. The treatment tank 2 is in an open state, making the replacement of the filter element 7 more convenient. A sealing rubber ring is glued to the side wall of the filter element 7, and the sealing rubber ring on the side wall of the filter element 7 ensures the sealing at the gaps between the filter element 7 and the main body 1 and the rotating seat 3.

[0053] The cross-section of the upright column 4 is in a shape of a double square (as Figure 6 shown). A through hole 6 is provided on each side wall of the upright column 4. The double-square upright column 4 can play a certain restrictive role on the filter element 7 to prevent the filter element 7 from rotating.

[0054] In the present invention, when the device is in use, the air pump 19 is turned on. The air pump 19 drives the air circulation, so that air enters the filter element 7 from the first pipe 5. Through the filtration of the filter element 7, the air enters the treatment tank 2 and then enters the air passing cavity 16 from the treatment tank 2. When the air passes through the air passing cavity 16, it impacts the blade 35, causing the main shaft 14 to rotate the rod. Then the air enters the sterilization cavity 17 through the second pipe 18, passes through the sterilization cavity 17 along the channel formed by the flow guiding plate 36, and is sterilized by the ultraviolet rays emitted by the ultraviolet lamp tube 37. Then the purified and sterilized air is discharged to the outside. The air circulates in this way to complete purification and sterilization.

[0055] During the use of the device, when the filter element 7 is clogged to a certain extent after long-term use, the resistance of the air passing through the filter element 7 increases at this time. While the air pump 19 keeps pumping air, the pressure above the driving ring 12 will decrease, causing the driving ring 12 to slide upward. When the driving ring 12 slides upward, it will contact the rotating seat 3 and apply a certain pressure to it. After being clogged to a certain degree, the pressure between the driving ring 12 and the rotating seat 3 enables the driving ring 12 to drive the rotating seat 3 to rotate. At this time, the rotating seat 3 rotates, and the filter element 7 is cleaned to a certain extent by the bristles on the side wall of the positioning block 8.

[0056] At the same time, the rotation of the rotating seat 3 drives the rotation of the rotating block 22, so that the rotating wheel 26 rotates with it. During the rotation of the rotating wheel 26, it contacts the convex block 27, causing the rotating wheel 26 to gradually move away from the inner side wall of the treatment tank 2 and causing the rotating block 22 to rotate around the rotating rod 21. At the same time, the rotating torsion spring 23 is wound up. When the rotating wheel 26 separates from the convex block 27, the elastic force accumulated by the torsion spring 23 is instantly released, causing the rotating block 22 to instantly reverse, so that the rubber block 24 impacts the filter element 7, causing the filter element 7 to vibrate to a certain extent. Cooperating with the positioning block 8, the filter element 7 is cleaned, and the dust and impurities on its surface are cleaned off and fall on the inner bottom wall of the treatment tank 2.

[0057] When the rotating wheel 26 approaches the convex block 27 and moves along the inner side wall of the treatment tank 2, it will also trigger the delay switch 28. So when the rotating wheel 26 passes over the convex block 27, the power supply changes the power supply direction. At this time, the first solenoid valve 29 is powered off and closed, while the second solenoid valve 31 is powered on and opened. At the same time, after the air pump 19 changes the power supply direction, the air pumping direction also changes. At this time, the air pump 19 pumps air into the sterilization cavity 17. The pumped air enters the treatment tank 2 through the second pipe 18 and the air passing cavity 16, and then passes through the filter element 7, blowing off the dust and impurities attached to the surface of the filter element 7. At this time, the third pipe 30 is in an open state, and the air carries the cleaned dust and impurities into the storage tank 32 for storage, so as to further deeply clean the filter element 7.

[0058] After a certain period of time, the power supply direction of the power source is restored. At this time, the second solenoid valve 31 is de-energized and closed, and the first solenoid valve 29 is energized and opened. The air pump 19 resumes the previous air pumping direction. At this time, air continues to enter from the first pipe 5 for circulating air purification and sterilization.

[0059] After the device has been used for a certain period of time, the filter screen 33 can be taken out, cleaned, and the dust and impurities stored in the storage tank 32 can be cleaned up.

Claims

1. A circulating air purification and sterilization device, comprising a main body, characterized in that: The main body is provided with a processing tank, a gas passage cavity and a sterilization cavity, the gas passage cavity is connected with the processing tank, the main body is rotatably connected with a main shaft through a bearing, the bottom wall of the processing tank is rotatably connected with a rotating seat through a bearing, the bottom wall of the processing tank is fixedly connected with a column, the column is a hollow structure and the top wall thereof is fixedly connected with a first tube, a plurality of through holes are provided on the side wall of the column, and a filter element is slidably connected with the column; A driving mechanism is arranged in the main body, and the driving mechanism is composed of a pneumatic component and a sensing control component, which is used to drive the entire device; A filter element cleaning mechanism is provided in the treatment tank, and the filter element cleaning mechanism is composed of a knocking component and a rotating brush component; A reverse cleaning mechanism is provided in the main body, which is used to reverse clean the filter element, and clean and collect the dust on the filter element and the dust in the processing tank; A sterilization mechanism is provided in the sterilization chamber; The pneumatic assembly includes an air pump, which is fixedly connected to the main body, one end of the air pump is located in the sterilization chamber, and the other end is located outside the main body. The main body is fixedly connected to a second tube, which connects the sterilization chamber with the air passage chamber. One end of the main shaft extends into the treatment tank and is fixedly connected to a gear, and the other end extends into the air passage chamber. A plurality of blades are fixedly connected to the side wall of a section of the main shaft located in the air passage chamber. The sensing control component includes a sliding groove, which is provided on the inner side wall of the processing groove, the processing groove is slidably connected with a slider through the sliding groove seal, a plurality of return springs are fixedly connected between the slider and the inner top wall of the sliding groove, the cross sections of the slider and the sliding groove are both annular, the inner side wall of the slider is rotatably connected with a driving ring through a bearing, the lower surface of the driving ring is fixedly connected with a gear ring, and the gear ring is meshed with the gear; The rotating brush assembly includes a plurality of positioning blocks, which are fixedly connected to the inner side wall of the rotating seat, and the side wall of the positioning block close to the filter element is provided with bristles; The knocking assembly includes multiple groups of fixed plates, which are fixedly connected to the upper surface of the rotating seat, and each two fixed plates form a group. A rotating rod is fixedly connected between each group of fixed plates. The rotating rod is rotatably connected to a rotating block through a bearing. A torsion spring is fixedly connected between the rotating block and the fixed plate. A groove is opened in the rotating block. A rotating wheel is rotatably connected between the top wall and the bottom wall of the groove through a bearing. A rubber block is fixedly embedded in the rotating block, and a plurality of protrusions are fixedly connected to the inner wall of the processing tank. The anti-cleaning mechanism includes a storage tank, which is opened in the main body. The main shaft passes through the storage tank. A plurality of third tubes are fixedly connected through the main body. The third tubes connect the processing tank with the storage tank. The second solenoid valve is arranged in the third tube. The first solenoid valve is arranged in the first tube. A delay switch is fixedly embedded in the inner wall of the processing tank. The delay switch is connected to the PLC control circuit. The first solenoid valve, the second solenoid valve, the air pump and the power supply are electrically connected through wires.

2. A circulating air purification and sterilization device according to claim 1, characterized in that: A plurality of cleaning blocks are fixedly connected to the side wall of a section of the main shaft in the storage tank, bristles are arranged on the side wall of the cleaning block away from the main shaft, and a filter screen is sealingly and slidably connected in the storage tank.

3. A circulating air purification and sterilization device according to claim 1, characterized in that: The cross section of the positioning block is L-shaped.

4. A circulating air purification and sterilization device according to claim 1, characterized in that: The sterilization mechanism comprises a plurality of guide plates, which are respectively fixedly connected to two opposite inner side walls of the sterilization chamber, and a plurality of ultraviolet lamp tubes are fixedly connected to the top wall and the bottom wall of the sterilization chamber.

5. The circulating air purification and sterilization device according to claim 1, characterized in that: A plurality of operating blocks are fixedly connected to the upper surface of the filter element, and a sealing rubber ring is glued to the side wall of the filter element.

6. A circulating air purification and sterilization device according to claim 1, characterized in that: The cross section of the column is in the shape of a Chinese character U.

7. The circulating air purification and sterilization device according to claim 1, characterized in that: The side wall of the rotating seat close to the driving ring is glued with rubber pads.

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