Low-resistance energy-saving photocatalytic purifier

Abstract

The invention relates to the technical field of air purification, and discloses a low-resistance energy-saving photocatalytic purifier which comprises a catalysis cylinder for air circulation, and further comprises a photocatalytic part arranged in the catalysis cylinder for catalyzing and purifying air, and a photocatalytic part arranged in the catalysis cylinder for catalyzing and purifying air, the cleaning and wiping part is movably arranged in the catalysis cylinder and is in contact with the photocatalysis part so as to horizontally wipe and clean the photocatalysis part; according to the invention, through the arrangement of the catalysis cylinder which can be arranged in the air return duct of the fan coil and the arrangement of the photocatalysis part in the catalysis cylinder, air enters from one end of the catalysis cylinder, an adsorption part in the photocatalysis part is utilized to form a reaction area, ultraviolet irradiation excites to generate photon-generated carriers, and the photon-generated carriers are converted into photo-generated carriers, so that the photo-generated carriers can be converted into photo-generated carriers, and the photo-generated carriers can be converted into photo-generated carriers, so that the photo-generated carriers can be converted into photo-generated carriers, and the photo-generated carriers can be converted into photo-generated carriers. The device is suitable for degrading indoor pollution gas in the air return duct of the fan coil, does not need to occupy extra space, and is low in energy consumption, high in reaction and mass transfer capacity on the surface of a photocatalyst, simple in structure and high in reaction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and particularly relates to a low-resistance and energy-saving photocatalytic purifier. Background Art

[0002] Indoor formaldehyde pollution, as a global environmental problem, seriously threatens human health. The photocatalytic oxidation technology has become a research hotspot due to its green and efficient characteristics. However, traditional reactors have problems such as low light utilization rate and poor mass transfer. Usually, flat, annular, tubular, honeycomb, packed bed, and duct-type photocatalytic reactors are used to purify air. However, there are still problems that need to be urgently solved.

[0003] Although the above-mentioned reactors have improved the mass transfer efficiency and light utilization efficiency through structural optimization, in the fresh air and fan coil systems commonly used in offices, hotels, and hospital wards, the VOCs gas emitted in the room can enter the fan coil system through the return air path. To effectively treat such pollutants, a photocatalytic purifier can be installed in the inlet duct of the fan coil for treatment.

[0004] However, limited by the narrow cross-section and short flow path length structure of the inlet duct, the existing purifiers cannot meet the dual performance requirements of high photocatalytic degradation performance and low resistance. At the same time, the design of existing photocatalytic reactors is mostly based on ideal laboratory conditions, and there is too high energy consumption when applied to actual indoor gas purification. Summary of the Invention

[0005] The present invention provides a low-resistance and energy-saving photocatalytic purifier, which is applicable to the degradation of indoor polluted gas in the return air duct of the fan coil, does not require additional space occupation, has low energy consumption, strong reaction and mass transfer capabilities on the surface of the photocatalyst, simple structure, and high reaction efficiency.

[0006] To solve the above technical problems, the technical solution of the present invention is as follows: In a first aspect, a low-resistance and energy-saving photocatalytic purifier, characterized in that it includes a catalytic cylinder for air circulation, and further includes: A photocatalytic part, arranged in the catalytic cylinder to catalytically purify air; A cleaning part, movably arranged in the catalytic cylinder, penetrating the catalytic cylinder, and capable of contacting the photocatalytic part to horizontally wipe and clean the photocatalytic part; A pushing and cleaning part, arranged in the catalytic cylinder and connected to the cleaning part to push out cleaning debris; An application part, penetrating and arranged on one side of the catalytic cylinder, and capable of contacting the cleaning part to apply a cleaning liquid onto the cleaning part; The photocatalytic part includes a photocatalytic sheet arranged in the catalytic cylinder, and is in a wavy structure, and an ultraviolet lamp arranged in the catalytic cylinder and located at the midline position of the catalytic cylinder to uniformly irradiate the photocatalytic sheet; The cleaning part includes pulling plates symmetrically arranged at both ends of the catalytic cylinder and slidably and guidingly connected to the catalytic cylinder, a multi-stage electric cylinder fixed to one side of the catalytic cylinder through a fixing member, a pulling rope with one end connected to the telescopic end of the multi-stage electric cylinder through a connecting member and the other end fixed to the pulling plate, and two push rods rotatably penetrating the pulling plate symmetrically. A cotton brush is sleeved on the outer side of the push rod and is wavy to cooperate with the photocatalytic sheet; The pushing and cleaning part includes a channel between one end of the photocatalytic sheet far from the multi-stage electric cylinder and the catalytic cylinder, and a push plate elastically arranged in the channel, and also includes a traction rope connected to the pulling plate through a connecting member; The smearing part includes an elastic rope connecting the end of the pulling rope through the pulling plate, and a toppling part meshing with the push rod and connected to the elastic rope to flip the cotton brush. It also includes a storage box arranged on the outer side of the catalytic cylinder, a high-density compressed cotton board penetrating the storage box and one side of the catalytic cylinder, and it is located on the cotton brush.

[0007] Furthermore, the photocatalysis part includes an adsorbing member and a catalyzing member. The catalyzing member penetrates the catalytic cylinder, is symmetrically arranged, and is at the midline of the catalytic cylinder to irradiate and catalyze the adsorbing member. The adsorbing member is arranged on the inner wall of the catalytic cylinder to adsorb formaldehyde; the adsorbing member includes: There are two photocatalytic sheets, one of which is fixed to the inner side of the bottom wall of the catalytic cylinder, and the other is fixed to the inner side of the top wall of the catalytic cylinder; The photocatalytic sheet is made of aluminum, with a height of 10 mm and a corrugation width of 33 mm to increase the loading area.

[0008] Furthermore, the catalyzing member includes: Lamp holders, there are two, symmetrically arranged through one side of the catalytic cylinder and located at the midline position of the catalytic cylinder; There are two ultraviolet lamps, respectively inserted into the lamp holders, and the diameter is 15 mm; The tube spacing of the two ultraviolet lamps is 43 mm to form a uniform illumination field; The two lamp holders and ultraviolet lamps are arranged in parallel.

[0009] Furthermore, the cleaning part includes a moving and guiding member and a rubbing and attaching member. The moving and guiding member is arranged at the end of the catalytic cylinder, located on the outer side, and is guidingly connected to the catalytic cylinder to pull the rubbing and attaching member. The rubbing and attaching member is symmetrically arranged in the catalytic cylinder and contacts the adsorbing member to wipe and clean the adsorbing member; the moving and guiding member includes: Four guide rails, symmetrically opened at both ends of the catalytic cylinder; Guide blocks, slidably arranged inside the guide rails; Link rods, one end inserted into the inside of the guide rails and fixedly connected to the guide blocks; There are two pulling plates, fixedly connected to the other ends of the link rods; A spring, one end of which is fixed to one side of the pull plate.

[0010] Furthermore, the rubbing member includes: A through hole is formed through the inside of the catalytic cylinder and is located on the side away from the multi-stage electric cylinder; A perforation is formed through the catalytic cylinder and is located on the side close to the multi-stage electric cylinder; The pull rope is movably arranged through the through hole and the perforation; A connecting plate is fixed to the mutually approaching surfaces of the two push rods; The cotton brush is fixedly connected to the connecting plate.

[0011] Furthermore, the pushing and cleaning part includes: An L-shaped plate is fixed to the rear end of the catalytic cylinder; A tension spring, one end of which is fixed inside the L-shaped plate and the other end is connected to the push plate and is in a stretched state; The traction rope is located below the photocatalytic sheet and is connected to the pull plate through a connecting rod.

[0012] Furthermore, the coating part includes a pulling member and a storage and coating member. The pulling member penetrates through the pull plate, and the storage and coating member penetrates through the catalytic cylinder and is located on the turning path of the cotton brush to store the coating cleaning liquid on the cotton brush; The pulling member includes: A hole is formed through the side of the pull plate close to the pull rope; The pull rope is movably arranged through the hole and is connected to the elastic rope; A guide rod is movably arranged through the pull plate; A triangular plate is fixed to the end of the guide rod and is connected to the end of the elastic rope away from the pull rope; The overturning part is connected to the rubbing member to turn the cotton brush during the elongation of the electric cylinder.

[0013] Furthermore, the overturning part includes: A torsion spring is sleeved on the outside of the push rod, and one end is connected to the pull plate through a fixing member and the other end is fixedly connected to the push rod; Tooth blocks are uniformly fixed on the outside of the push rod; There are two racks, which are guidingly connected to the two inclined surfaces of the triangular plate and are guidingly connected to the pull plate; The rack is meshed with the tooth block.

[0014] Furthermore, the storage and coating member includes: A cotton strip is arranged through the surface of the storage box close to the catalytic cylinder; The high-density compressed cotton board is connected to the end of the cotton strip; The high-density compressed cotton board is of a wavy structure to cover the cotton brush; A storage and protection part is arranged on the storage box.

[0015] Furthermore, the storage and protection part includes: An end cap, adhesively fixed to the storage box; A threaded cap, threadedly connected through the upper part of the end cap; An air guide plate, fixed to the catalytic cylinder and connected to the other end of the spring.

[0016] The above solution of the present invention has at least the following beneficial effects: By providing a catalytic cylinder that can be placed in the return air duct of the fan coil unit, a photocatalytic part is provided inside the catalytic cylinder. Air enters from one end of the catalytic cylinder, and an adsorption part inside the photocatalytic part constitutes a reaction area. Under the ultraviolet light emitted by the catalytic parts provided inside the photocatalytic part, photo-generated carriers are excited on the surface of the catalyst, causing the oxidation and degradation reaction of formaldehyde molecules in the air. The treated gas is discharged from the other end. The height of the adsorption part is 10 mm, the corrugation width is 33 mm, while the diameter of the catalytic part is 15 mm and the spacing is 43 mm. Thus, it can be directly embedded in the air conditioner return air opening or ventilation duct without occupying additional indoor space, naturally integrating with the building ventilation system, extending the flow path of the gas on the surface of the catalytic material, increasing the reaction time of formaldehyde molecules with photo-generated carriers, improving the degradation efficiency. The lamp tubes are arranged in parallel and symmetrically in the reaction area to ensure the uniformity of the radiation intensity on the catalytic surface is improved and reduce the light intensity attenuation in the edge area. Description of the Drawings

[0017] Figure 1 It is an overall three-dimensional view of the low-resistance energy-saving photocatalytic purifier provided by the embodiment of the present invention; Figure 2 It is a three-dimensional exploded view of the ultraviolet lamp and the photocatalytic sheet provided by the embodiment of the present invention; Figure 3 It is a cross-sectional three-dimensional perspective view of the catalytic cylinder provided by the embodiment of the present invention; Figure 4 It is a three-dimensional view of the combination of the push plate, the tension spring (contracted state) and the L plate provided by the embodiment of the present invention; Figure 5 It is a three-dimensional view of the combination of the photocatalytic sheet, the ultraviolet lamp, the multi-stage electric cylinder, the cotton brush and the high-density compressed cotton board provided by the embodiment of the present invention; Figure 6 Provided by the embodiment of the present invention Figure 5 Schematic diagram of the structure at position C in Figure 7 It is a three-dimensional exploded view of the combination of the push rod, the pull plate, the triangular plate and the rack provided by the embodiment of the present invention; Figure 8 Provided by the embodiment of the present invention Figure 7 Schematic diagram of the structure at position D in Figure 9 It is a three-dimensional view of the tooth block provided by the embodiment of the present invention; Figure 10 Exploded perspective view of the end cap, high-density compression cotton board, and storage box provided by the embodiment of the present invention; Figure 11 Provided by the embodiment of the present invention Figure 3 Schematic diagram of the structure at position A in Figure 12 Provided by the embodiment of the present invention Figure 3 Schematic diagram of the structure at position B in Figure 13 Perspective view of the combination of the connecting rod and the guide block provided by the embodiment of the present invention; Figure 14 Perspective view of the multi-stage electric cylinder provided by the embodiment of the present invention.

[0018] Explanation of reference numerals: In the figure: 1, catalytic cylinder; 2, photocatalytic sheet; 3, lamp holder; 4, ultraviolet lamp; 5, guide rail; 6, guide block; 7, connecting rod; 8, pulling plate; 9, through hole; 10, perforation; 11, pulling rope; 12, fixed seat; 13, multi-stage electric cylinder; 14, connecting ring; 15, push rod; 16, connecting plate; 17, cotton brush; 18, torsion spring; 19, tooth block; 20, rack; 21, T groove; 22, T plate; 23, guide rod; 24, triangular plate; 25, elastic rope; 26, spring; 27, L plate; 28, tension spring; 29, push plate; 30, traction rope; 31, storage box; 32, cotton strip; 33, high-density compression cotton board; 34, end cap; 35, threaded cap; 36, air guide plate; 37, guide groove; 38, arc-edge guide plate. Detailed implementation manners

[0019] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be completely conveyed to those skilled in the art.

[0020] As Figures 1 to 14 shown, an embodiment of the present invention provides a low-resistance energy-saving photocatalytic purifier, which is characterized in that it includes a catalytic cylinder 1 for air circulation, and further includes: A photocatalytic part, which is arranged in the catalytic cylinder 1 to catalytically purify air; A cleaning part, which is movably arranged in the catalytic cylinder 1, penetrates through the catalytic cylinder 1, and can contact the photocatalytic part to horizontally wipe and clean the photocatalytic part; A pushing and cleaning part, which is arranged in the catalytic cylinder 1 and is connected to the cleaning part to push out cleaning debris; A coating part, which penetrates through one side of the catalytic cylinder 1 and can contact the cleaning part to coat a cleaning liquid onto the cleaning part; The photocatalytic part includes a photocatalytic sheet 2 arranged inside the catalytic cylinder 1, and it is in a wavy structure, and an ultraviolet lamp 4 arranged inside the catalytic cylinder 1, and it is located at the midline position of the catalytic cylinder 1 to uniformly irradiate the photocatalytic sheet 2; The cleaning part includes pull plates 8 symmetrically arranged at both ends of the catalytic cylinder 1, and they are translatably and guidingly connected to the catalytic cylinder 1, and a multi-stage electric cylinder 13 fixed to one side of the catalytic cylinder 1 through a fixing part. It also includes a pull rope 11 with one end connected to the telescopic end of the multi-stage electric cylinder 13 through a connecting part, and the other end is fixedly connected to the pull plate 8, and two push rods 15 rotatably penetrating through the pull plate 8 symmetrically arranged, and a cotton brush 17 is sleeved on the outer side of the push rod 15, and it is in a wavy shape to cooperate with the photocatalytic sheet 2; The pushing and cleaning part includes a channel existing between one end of the photocatalytic sheet 2 away from the multi-stage electric cylinder 13 and the catalytic cylinder 1, and a push plate 29 elastically arranged in the channel, and it also includes a traction rope 30 connected to the pull plate 8 through a connecting part; The smearing part includes an elastic rope 25 penetrating through the pull plate 8 and connected to the end of the pull rope 11, and a tipping part meshing with the push rod 15 and connected to the elastic rope 25 to flip the cotton brush 17. It also includes a storage box 31 arranged outside the catalytic cylinder 1, and a high-density compressed cotton board 33 penetrating through the storage box 31 and one side of the catalytic cylinder 1, and it is located on the cotton brush 17.

[0021] Specifically, the photocatalytic sheet 2 is made of corrugated aluminum material, which is relatively smooth and can reduce air resistance. For the return air duct of the FP-34 fan coil unit, its size is 550 mm×235 mm×130 mm, and the size of this photocatalytic purifier is 550mm×130 mm×80 mm. The catalytic cylinder 1 can provide stable support and protection for the photocatalytic sheet 2, the lamp holder 3 and the ultraviolet lamp 4, and can provide a flow channel for air.

[0022] In the actual application process of this embodiment: The staff can install this catalytic purifier in the return air duct of the fan coil unit by using the catalytic cylinder 1, and connect the catalytic cylinder 1 to the air duct by using the fixing part, so that the air entering from the return air duct of the fan coil unit can be blown into the catalytic cylinder 1 and discharged from the air duct through the catalytic cylinder 1.

[0023] As a preferred embodiment of the present invention, the photocatalytic part includes an adsorbing part and a catalytic part. The catalytic part penetrates through the catalytic cylinder 1, and is symmetrically arranged and is at the midline of the catalytic cylinder 1 to irradiate the catalytic adsorbing part. The adsorbing part is arranged on the inner wall of the catalytic cylinder 1 to adsorb formaldehyde; The adsorbing part includes: There are two photocatalytic sheets 2, one of which is fixed to the inner side of the bottom wall of the catalytic cylinder 1, and the other is fixed to the inner side of the top wall of the catalytic cylinder 1.

[0024] Specifically, the photocatalytic sheet 2 includes: The photocatalytic sheet 2 is made of aluminum, with a height of 10 mm and a corrugation width of 33 mm to increase the loading area.

[0025] Specifically, the photocatalytic sheet 2 can provide a carrier for the catalyst. During the production process of the photocatalytic sheet 2, an Mn / TiO2 composite catalyst coating is uniformly coated on its surface through the sol-gel process. Two photocatalytic sheets 2 and the Mn / TiO2 composite catalyst coating can cooperate to form a reaction area.

[0026] The catalytic component includes: Two lamp holders 3 are symmetrically arranged on one side of the catalytic cylinder 1 through and are located at the midline position of the catalytic cylinder 1; There are two ultraviolet lamps 4, which are respectively inserted into the lamp holders 3 and have a diameter of 15 mm; The tube spacing of the two ultraviolet lamps 4 is 43 mm to form a uniform illumination field; The two lamp holders 3 and the ultraviolet lamps 4 are arranged in parallel.

[0027] Specifically, the catalytic cylinder 1 can provide a stable support for the lamp holder 3. The lamp holder 3 can provide an installation space for the ultraviolet lamp 4 and can supply power to the ultraviolet lamp 4, enabling the ultraviolet lamp 4 to emit ultraviolet light when powered on to irradiate the photocatalytic sheet 2. The single-lamp power of the ultraviolet lamp 4 is 15 W, and the ultraviolet lamp 4 is of the 254 nm type with a light energy of 4.9 eV, which can provide the light energy of a specific wavelength required for the photocatalytic reaction, efficiently excite photogenerated electrons and hole pairs. The 43 mm spacing can achieve the light intensity superposition effect under the parallel layout of the two lamp tubes, ensuring that the surface of the photocatalytic sheet 2 can obtain more uniform and sufficient light radiation, being more energy-efficient and improving the utilization efficiency of the photocatalyst.

[0028] In the actual application process of this embodiment, arranging two lamp tubes in parallel can better form a relatively uniform illumination field in the air duct, enabling the air flowing through different positions of the air duct to fully contact the excited photocatalytic material, thereby improving the degradation efficiency and treatment capacity of pollutants (such as formaldehyde, benzene, etc.) in the air and ensuring more sufficient and efficient purification of the circulating air in the air duct; the setting of the upper and lower layers of corrugated plates significantly increases the loading area of the photocatalytic material, and more photocatalytic materials can be coated on the surface of the corrugated plates, thus having more active sites participating in the photocatalytic reaction. At the same time, it makes the relatively concentrated or disordered air flow more evenly distributed in the air duct, ensuring full contact between the air flow and the surface of the photocatalytic material and avoiding the situation of too fast or too slow local flow velocity.

[0029] Air will be inhaled into the return air duct of the fan coil unit and enter the catalytic cylinder 1 along the duct. Subsequently, the air will enter the reaction area formed by two photocatalytic sheets 2 inside the catalytic cylinder 1. At the same time, the staff needs to supply power to the lamp holder 3 after installing the catalytic cylinder 1, so that the ultraviolet lamp 4 emits ultraviolet light to irradiate the photocatalytic sheet 2, causing the surface of the Mn / TiO2 catalyst on the photocatalytic sheet 2 to generate photogenerated carriers, generating photogenerated electrons and hole pairs. Among them, the photogenerated holes react with adsorbed water molecules to generate strongly oxidizing active species such as ·OH, and formaldehyde molecules in the air are oxidized by the above-mentioned active species, undergoing a decomposition reaction and being converted into harmless products, thereby oxidatively degrading formaldehyde molecules in the air, so that the air passing through the catalytic cylinder 1 becomes purified gas, and the purified gas will be discharged from the return air duct of the fan coil unit.

[0030] And the oxidation degradation products will remain on the photocatalytic sheet 2.

[0031] As a preferred embodiment of the present invention, the cleaning part includes a transfer member and a wiping member. The transfer member is arranged at the end of the catalytic cylinder 1 and is located outside, and is guidingly connected to the catalytic cylinder 1, and can pull the wiping member. The wiping member is symmetrically arranged inside the catalytic cylinder 1 and contacts the adsorption member to wipe and clean the adsorption member; the transfer member includes: Guide rails 5, there are four, symmetrically opened at both ends of the catalytic cylinder 1; Guide blocks 6, slidably arranged inside the guide rails 5; Link rods 7, one end is inserted inside the guide rails 5 and is fixedly connected to the guide blocks 6; There are two pull plates 8, which are fixedly connected to the other end of the link rod 7; Spring 26, one end is fixed on one side of the pull plate 8.

[0032] Specifically, the guide rails 5 can provide a moving guiding function for the guide blocks 6, preventing the guide blocks 6 from rotating, so that they can only translate, and the guide blocks 6 can provide support for the link rods 7.

[0033] The wiping member includes: Through holes 9, penetrating through the inside of the catalytic cylinder 1 and located on the side away from the multi-stage electric cylinder 13; Perforations 10, penetrating through the catalytic cylinder 1 and located on the side close to the multi-stage electric cylinder 13; Pull ropes 11 are movably arranged through the through holes 9 and the perforations 10; Connecting plates 16, fixed on the mutually approaching surfaces of the two push rods 15; Cotton brushes 17 are fixedly connected to the connecting plates 16.

[0034] Specifically, one side of the catalytic cylinder 1 is fixedly connected with a fixed seat 12 through a fixing member. The fixed seat 12 is sleeved on the fixed end of the multi-stage electric cylinder 13. The telescopic end of the multi-stage electric cylinder 13 is connected with a connecting ring 14 through a fixing member, and the connecting ring 14 is connected with one end of the pull rope 11. The connecting rod 7 can stably support the pull plate 8 under the support of the guide block 6. The pull plate 8 can provide support for the push rod 15. The push rod 15 can provide support for the connecting plate 16. The connecting plate 16 can stably support the cotton brush 17. The cotton brush 17 is relatively soft and has adsorption and a certain roughness, and can generate frictional force with the photocatalytic sheet 2 during the movement. The fixed seat 12 can stably support the multi-stage electric cylinder 13 under the support of the catalytic cylinder 1. The multi-stage electric cylinder 13 can provide support for one end of the pull rope 11 through the connecting ring 14, and can pull the pull rope 11 through the connecting ring 14 during telescoping. The guide hole and the through hole 10 can provide a through channel and a guide for the pull rope 11, and can cooperate with the catalytic cylinder 1 to provide support and resistance for the pull rope 11.

[0035] In the actual application process of this embodiment, the staff can, according to actual needs, control the multi-stage electric cylinder 13 to extend, so that the multi-stage electric cylinder 13 uses its telescopic end to push one end of the pull rope 11 away from the fixed seat 12 under the support of the fixed seat 12 through the connecting ring 14, making the pull rope 11 be pushed by an external force to penetrate through the through hole 10 and the through hole 9 and move. Furthermore, the other end of the pull rope 11 uses an external force to pull the triangular plate 24 to one side, pulls the pull plate 8 through the triangular plate 24, makes the pull plate 8 drive the connecting rod 7 to move together under the action of the external force, makes the connecting rod 7 drive the guide block 6 to move along the guide rail 5 together, enables the guide block 6 to cooperate with the guide rail 5 to provide a moving guide for the connecting rod 7 and the pull plate 8, enables the pull plate 8 to translate along the guide rail 5, and further enables the pull plate 8 to drive the connecting plate 16 to translate to one side together through the push rod 15. Furthermore, the connecting plate 16 drives the cotton brush 17 to fit the photocatalytic sheet 2 and translate to one side. During the translation process, the cotton brush 17 will wipe and clean the impurities and dirt on the photocatalytic sheet 2 by using the external force and its own frictional force. And the staff can spray the cleaning liquid on the cotton brush 17, make the cotton brush 17 adsorb it, and use the cleaning liquid to assist the cleaning work.

[0036] During the translation process of the pull plate 8 being pulled towards the direction close to the through hole 9, it will use an external force to pull the spring 26, so that the spring 26 is stretched and deformed under the action of the external force and the support of the air guide plate 36.

[0037] As a preferred embodiment of the present invention, the pushing and cleaning part includes: An L-shaped plate 27, fixed at the rear end of the catalytic cylinder 1; A tension spring 28, one end of which is fixed inside the L-shaped plate 27, and the other end is connected with the push plate 29 and is in a stretched state; The towing rope 30 is located below the photocatalytic sheet 2 and is connected with the pull plate 8 through the connecting rod 7.

[0038] Specifically, the impurities on the photocatalytic sheet 2 will be pushed by the cotton brush 17 into the channel between the photocatalytic sheet 2 and the catalytic cylinder 1. The towing rope 30 can tow the push plate 29 under the support of the connecting rod 7, so that the push plate 29 can tow the tension spring 28. The L-shaped plate 27 can provide support for the tension spring 28 under the support of the catalytic cylinder 1, so that the tension spring 28 can be towed by the push plate 29 and be in a stretched state.

[0039] In the actual application process of this embodiment, when the pull plate 8 and the connecting rod 7 are pulled by the pull rope 11 and move towards the direction close to the through hole 9, the connecting rod 7 will drive the towing rope 30 to move together, thereby relaxing the towing rope 30, and then gradually eliminating the pulling force applied to the push plate 29, so that the tension spring 28 can use the rebound force to pull the push plate 29 along the channel towards the direction close to the L-shaped plate 27 under the support of the L-shaped plate 27. At the same time, the push plate 29 will use the rebound force of the tension spring 28 to pull the towing rope 30 during the movement, so that the towing rope 30 remains taut. After the cotton brush 17 moves to the position of the photocatalytic sheet 2 far from the multi-stage electric cylinder 13, the push plate 29 will be pulled by the tension spring 28 and move out of the channel onto the L-shaped plate 27. At the same time, the impurities wiped off the photocatalytic sheet 2 by the cotton brush 17 will be pushed into the channel between the photocatalytic sheet 2 and the catalytic cylinder 1. Subsequently, it is necessary to control the multi-stage electric cylinder 13 to contract and reset. After the multi-stage electric rod contracts, the pull rope 11 will be relaxed, and the external force applied to the spring 26 will be eliminated. Then, the spring 26 will use the rebound force to pull the pull plate 8 along the guide rail 5 towards the direction away from the through hole 9 under the support of the air guide plate 36. At the same time, the pull plate 8 will pull the pull rope 11 to move back together through the triangular plate 24 and the elastic cord 25. At the same time, the pull plate 8 will pull the towing rope 30 through the connecting rod 7 during the movement of moving back to the original position, so that the towing rope 30 will pull the push plate 29 under the action of the external force and the resistance support of the photocatalytic sheet 2, so that the push plate 29 will use the external force to pull the spring 26 to elongate and deform, so that the push plate 29 can move along the channel between the photocatalytic sheet 2 and the catalytic cylinder 1 towards the direction away from the L-shaped plate 27, and during the movement, the push plate 29 will use its own inclination angle to shovel up and push the cleaned impurities in the channel out of the catalytic cylinder 1 for the staff to collect and process, so as to cooperate with the cleaning of the cotton brush 17, automatically discharge and process the cleaned impurities, and provide convenience for the cleaning work.

[0040] As a preferred embodiment of the present invention, the coating part includes a pulling member and a storage and coating member. The pulling member penetrates through the pull plate 8, and the storage and coating member penetrates through the catalytic cylinder 1 and is located on the turning path of the cotton brush 17 to store the coating cleaning liquid on the cotton brush 17; the pulling member includes: A hole is formed through the side of the pull plate 8 close to the pull rope 11; The pull rope 11 movably penetrates through the hole and is connected to the elastic cord 25; The guide rod 23 movably penetrates through the pull plate 8; The triangular plate 24 is fixed at the end of the guide rod 23 and is connected to the end of the elastic cord 25 far from the pull rope 11; Overturn the connection between the part and the rubbing part so as to turn the cotton brush 17 during the elongation of the electric cylinder.

[0041] Specifically, one end of the rack 20 close to the triangular plate 24 has an inclined arc, so that the triangular plate 24 can push the rack 20 to move by using the inclined angle. The hole can provide a through channel for the pull rope 11 and the elastic cord 25, and the other end of the pull rope 11 can provide support for the elastic cord 25.

[0042] The overturning part includes: A torsion spring 18 is sleeved outside the push rod 15, one end of which is connected to the pull plate 8 through a fixing part, and the other end is fixedly connected to the push rod 15; Tooth blocks 19 are uniformly fixed outside the push rod 15; There are two racks 20, which are guidingly connected to the two inclined surfaces of the triangular plate 24 and are guidingly connected to the pull plate 8; The rack 20 meshes with the tooth block 19.

[0043] Specifically, an arc-edge guide plate 38 is fixed at the position of the rack 20 close to the triangular plate 24. A guide groove 37 is formed on the inclined surface of the triangular plate 24. The arc-edge guide plate 38 is located in the guide groove 37. A T-groove 21 is formed on the surface of the rack 20 away from the triangular plate 24. Two T-plates 22 are symmetrically fixed on one side of the pull plate 8, and the T-plates 22 are inserted into the T-groove 21 to provide moving guidance for the rack 20. The tooth block 19 can provide support for the rack 20 by using the meshing effect under the support of the push rod 15. One end of the torsion spring 18 can be driven to rotate together during the rotation of the push rod 15, so that the torsion spring 18 is rotationally twisted and stored with energy under the support of the pull plate 8. After the external force disappears, it will rebound. The push rod 15 can provide stable support for the tooth block 19, and the tooth block 19 can mesh with the rack 20.

[0044] The storage and coating part includes: A cotton strip 32 is arranged through one side of the storage box 31 close to the catalytic cylinder 1; A high-density compressed cotton board 33 is connected to the end of the cotton strip 32; The high-density compressed cotton board 33 is of a wavy structure to cover the cotton brush 17; A storage and protection part is arranged on the storage box 31.

[0045] Specifically, the catalytic cylinder 1 can provide stable support for the storage box 31, so that the storage box 31 can provide support for the cotton strip 32. The catalytic cylinder 1 can provide support for the high-density compressed cotton board 33. The cotton strip 32 and the high-density compressed cotton board 33 have adsorption properties and can adsorb and conduct the cleaning liquid (alcohol).

[0046] The storage and protection part includes: An end cover 34 is adhesively fixed on the storage box 31; The threaded cap 35 is threadedly connected above the end cap 34 through. The air deflector 36 is fixed on the catalytic cylinder 1 and is connected to the other end of the spring 26.

[0047] Specifically, the storage box 31 can provide stable support for the end cap 34. The end cap 34 can protect the components inside it and can provide support for the threaded cap 35 using threads. The catalytic cylinder 1 can provide support for the air deflector 36. The air deflector 36 has an inclined angle, enabling gas to enter the catalytic cylinder 1.

[0048] In the actual application process of this embodiment, when the multi-stage electric cylinder 13 extends to pull the pull rope 11, the pull rope 11 will move through the hole, and during the movement, it will stretch the elastic cord 25 to move through the hole, so that the elastic cord 25 can be stretched to the limit under the support of the triangular plate 24 (after being stretched to the limit, the elastic cord 25 will not continue to deform and stretch). Then, as the multi-stage electric cylinder 13 continues to extend, the pull rope 11 will pull the triangular plate 24 through the stretched elastic cord 25 to the limit, causing the triangular plate 24 to translate in the direction close to the pull plate 8 under the guiding cooperation of the guide rod 23 and the pull plate 8. Furthermore, the triangular plate 24 uses external force and its own inclined angle to push the rack 20, enabling the two racks 20 to translate in two opposite directions, up and down respectively, under the guiding action of the T-slot 21 and the T-plate 22. At the same time, the rack 20 will use the meshing action to push the tooth block 19 during the translation process, enabling the tooth block 19 to use external force to push the two push rods 15 to rotate ninety degrees in opposite directions under the support of the pull plate 8, so that the pull plate 8 can drive the connecting plate 16 and the cotton brush 17 to rotate ninety degrees together, enabling the cotton brush 17 to be in contact with the photocatalytic sheet 2 for mobile cleaning of the photocatalytic sheet 2. When the multi-stage electric rod contracts after extending, the tension on the elastic cord 25 will disappear, and then it will rebound, thus causing the external force applied to the triangular plate 24 and the rack 20 to disappear. Subsequently, the torsion spring 18 will use the rebound force to push the push rod 15 to rotate ninety degrees in the direction close to the high-density compressed cotton under the support of the pull plate 8. During the rotation process, the push rod 15 will drive the cotton brush 17 to contact the high-density compressed cotton board 33 and be resisted and squeezed by the high-density compressed cotton board 33 under the action of the rotational external force, so as to bypass the high-density compressed cotton board 33 and move to its lower side. And the staff needs to remove the threaded cap 35 in advance, open an opening on the end cap 34, and then inject the cleaning liquid (alcohol) into the end cap 34 and the storage box 31 from this position, so that the cotton strip 32 can absorb the cleaning liquid and transfer it to the high-density compressed cotton board 33. The high-density compressed cotton board 33 will absorb the cleaning liquid. When the high-density compressed cotton board 33 is saturated, it will seep out the cleaning liquid. During the rotation of the cotton brush 17 and contact with the high-density compressed cotton board 33, the cleaning liquid adhered to the high-density compressed cotton board 33 will adhere to the cotton brush 17, so that the cotton brush 17 can cooperate with the cleaning liquid (alcohol) to clean the photocatalytic sheet 2 during the cleaning process, improving the cleaning effect.

[0049] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A low-resistance energy-saving photocatalytic purifier, characterized in that It includes a catalytic cylinder for air circulation, and further includes: A photocatalytic part is arranged inside the catalytic cylinder to catalytically purify the air; A cleaning part is movably arranged inside the catalytic cylinder, penetrates the catalytic cylinder, and can contact the photocatalytic part to horizontally wipe and clean the photocatalytic part; A pushing and cleaning part is arranged inside the catalytic cylinder and connected to the cleaning part to push out cleaning debris; A coating part penetrates and is arranged on one side of the catalytic cylinder, and can contact the cleaning part to coat cleaning liquid onto the cleaning part; The photocatalytic part includes a photocatalytic sheet arranged inside the catalytic cylinder, and it is in a wavy structure, and an ultraviolet lamp arranged inside the catalytic cylinder, and it is located at the midline position of the catalytic cylinder to uniformly irradiate the photocatalytic sheet; The cleaning part includes pull plates symmetrically arranged at both ends of the catalytic cylinder, and is slidably and guidingly connected to the catalytic cylinder, and a multi-stage electric cylinder fixed to one side of the catalytic cylinder through a fixing part. It also includes a pull rope with one end connected to the telescopic end of the multi-stage electric cylinder through a connecting part, and the other end fixed to the pull plate, and two push rods symmetrically arranged and rotatably penetrating the pull plate. A cotton brush is sleeved on the outer side of the push rod, and it is in a wavy shape to cooperate with the photocatalytic sheet; The pushing and cleaning part includes a channel between one end of the photocatalytic sheet away from the multi-stage electric cylinder and the catalytic cylinder, and a push plate elastically arranged in the channel. It also includes a traction rope connected to the pull plate through a connecting part; The coating part includes an elastic rope penetrating the pull plate and connected to the end of the pull rope, and a overturning part meshing with the push rod and connected to the elastic rope to flip the cotton brush. It also includes a storage box arranged outside the catalytic cylinder, and a high-density compressed cotton board penetrating the storage box and one side of the catalytic cylinder, and it is located on the cotton brush; 2. The low-resistance energy-saving photocatalytic purifier according to claim 1, wherein The photocatalytic part includes an adsorbing part and a catalytic part. The catalytic part penetrates the catalytic cylinder, is symmetrically arranged, and is at the midline of the catalytic cylinder to irradiate and catalyze the adsorbing part. The adsorbing part is arranged on the inner wall of the catalytic cylinder to adsorb formaldehyde; The adsorbing part includes: There are two photocatalytic sheets, one of which is fixed to the inner side of the bottom wall of the catalytic cylinder, and the other is fixed to the inner side of the top wall of the catalytic cylinder; The photocatalytic sheet is made of aluminum, its height is 10 mm, and its corrugation width is 33 mm to increase the loading area; 3. The low-resistance energy-saving photocatalytic purifier according to claim 2, wherein, The catalytic part includes: There are two lamp holders, symmetrically arranged through one side of the catalytic cylinder, and located at the midline position of the catalytic cylinder; There are two ultraviolet lamps, respectively inserted into the lamp holders, and the diameter is 15 mm; The tube spacing of the two ultraviolet lamps is 43 mm to form a uniform illumination field; The two lamp holders and ultraviolet lamps are arranged in parallel; 4. The low-resistance energy-saving photocatalytic purifier according to claim 3, characterized in that, The cleaning part includes a moving and guiding part and a wiping part. The moving and guiding part is arranged at the end of the catalytic cylinder, located outside, and is guidingly connected to the catalytic cylinder to pull the wiping part. The wiping part is symmetrically arranged inside the catalytic cylinder and contacts the adsorbing part to wipe and clean the adsorbing part; The moving and guiding part includes: There are four guide rails, symmetrically opened at both ends of the catalytic cylinder; Guide blocks are slidably arranged inside the guide rails; A connecting rod has one end inserted into the inside of the guide rail and is fixedly connected to the guide block; There are two pull plates, fixedly connected to the other end of the connecting rod; A spring has one end fixed to one side of the pull plate; 5. The low-resistance energy-saving photocatalytic purifier according to claim 4, characterized in that, The wiping part includes: A through hole is opened through the inside of the catalytic cylinder, and is located on the side away from the multi-stage electric cylinder; The perforation is opened through the catalytic cylinder and is located on the side close to the multi-stage electric cylinder; The pulling rope movably passes through the through hole and the perforation; The connecting plate is fixed on the mutually approaching surfaces of the two push rods; The cotton brush is fixedly connected to the connecting plate.

6. The low-resistance energy-saving photocatalytic purifier according to claim 5, characterized in that, The pushing and cleaning part includes: The L-shaped plate is fixed at the rear end of the catalytic cylinder; The tension spring has one end fixed inside the L-shaped plate and the other end connected to the push plate and is in a stretched state; The traction rope is located below the photocatalytic sheet and is connected to the pulling plate through a connecting rod.

7. The low-resistance energy-saving photocatalytic purifier according to claim 6, characterized in that, The smearing part includes a pulling and moving part and a storage and smearing part. The pulling and moving part passes through the pulling plate, and the storage and smearing part passes through the catalytic cylinder and is located on the turning path of the cotton brush to store the smearing cleaning liquid onto the cotton brush; The pulling and moving part includes: A hole is opened through the side of the pulling plate close to the pulling rope; The pulling rope movably passes through the hole and is connected to the elastic rope; The guide rod movably passes through the pulling plate; The triangular plate is fixed at the end of the guide rod and is connected to the end of the elastic rope away from the pulling rope; The overturning part is connected to the rubbing part to turn over the cotton brush during the elongation of the electric cylinder.

8. The low-resistance energy-saving photocatalytic purifier according to claim 7, characterized in that The overturning part includes: The torsion spring is sleeved outside the push rod, and one end is connected to the pulling plate through a fixing part and the other end is fixedly connected to the push rod; The tooth blocks are uniformly fixed outside the push rod; There are two racks, which are guidingly connected to the two inclined surfaces of the triangular plate and are guidingly connected to the pulling plate; The rack meshes with the tooth block.

9. The low-resistance energy-saving photocatalytic purifier according to claim 8, wherein The storage and smearing part includes: The cotton strip passes through the surface of the storage box close to the catalytic cylinder; The high-density compressed cotton board is connected to the end of the cotton strip; The high-density compressed cotton board is in a wavy structure to cover the cotton brush; The storage and protection part is arranged on the storage box.

10. The low-resistance energy-saving photocatalytic purifier according to claim 9, characterized in that, The storage and protection part includes: The end cover is adhesively fixed on the storage box; The threaded cover is threadedly connected through the upper part of the end cover; The air guide plate is fixed on the catalytic cylinder and is connected to the other end of the spring.

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