Automatic circulation air purification and disinfection device for pneumology department ward

Abstract

The invention relates to the technical field of air purification, in particular to an automatic circulation air purification and disinfection device for a pneumology department ward, which comprises a purification box formed by mutually clamping and connecting a first box body, a second box body and a third box body into a whole, and the internal spaces of the first box body, the second box body and the third box body are respectively an isolation cavity, a cleaning cavity and a purification cavity; a partition plate is fixedly connected to the top end in the first box body, a disc movably connected with an opening of the partition plate is arranged at the top end of the partition plate, three cylinders are fixedly connected to the disc at equal intervals in a penetrating mode, three air cylinders located in the isolation cavity are installed on one side of the disc, and the output ends of the three air cylinders movably penetrate through the three cylinders correspondingly and extend to the cleaning cavity; one end of the output end of each air cylinder is fixedly connected with a filter element support, each filter element support is movably provided with a filter piece used for purifying air, and the three filter elements are arranged in the device and can be alternately replaced for use, so that the effect of efficiently and circularly purifying air is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of air purification, in particular to an automatic circulating air purification and disinfection device for a respiratory ward. Background Art

[0002] The respiratory ward of a hospital mainly provides treatment and accommodation for patients with respiratory and related diseases. According to the properties of this type of ward, it can be seen that the air quality requirements are relatively high. Therefore, air purification devices are often used in the ward to improve the air quality. Air purification devices are mainly used to adsorb dust and impurities in the air and to disinfect bacteria and viruses. Adsorption is generally achieved by installing an air filter in the purification device to filter the air. Disinfection is generally achieved through physical or chemical methods to cause irreversible changes in the composition of bacterial or viral pathogens, thereby achieving the function of disinfection and sterilization. For example, ultraviolet air disinfection technology is widely used in daily life.

[0003] The basic principle of the air purification device is to draw the air in the ward into the purification device through the suction port of the exhaust fan, the drawn air is filtered by the filter element and sterilized by the ultraviolet irradiation lamp, and finally the purified air is discharged into the ward through the exhaust port. There are also some technical solutions for air purification equipment in the prior art. For example, a patent application with publication number: CN118009451B discloses an air purification and disinfection device for a public ward in a hospital, including an air disinfection and purification body and a casing, the outside of the air disinfection and purification body is fixedly connected with a mounting frame, and the casing and the two outer parts of the air disinfection and purification body are connected. Support components are provided on both sides, a filter element plate is provided between the air disinfection and purification body and the casing, mounting columns are fixedly embedded on both sides of the filter element plate, and mounting components for fixing are provided on the outside of the two mounting columns, and two mounting seats and clamping components for connection are provided between the air disinfection and purification body and the casing. The air disinfection and purification body and the casing are fixed by setting the mounting seat and the clamping component, and when the clamping component is separated from the mounting seat, the casing can be moved and separated from the air disinfection and purification body by cooperating with the support component, and the filter element plate can be replaced, so as to achieve the effect of quickly replacing the filter element plate and using it.

[0004] Although the above technical solution makes it easier to disassemble, replace and clean the filter element, there is only one filter element in the device. After long-term use, the filter element still needs to be manually disassembled, replaced and cleaned. These operations will interrupt air purification for a long time, making it difficult to use it in an efficient cycle. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an automatic circulating air purification and disinfection device for a respiratory ward, which solves the problem that the existing air purification device generally only has one filter element, which requires manual regular replacement and cleaning of the filter element, resulting in intermittent air purification and difficulty in recycling.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic circulating air purification and disinfection device for a respiratory ward, comprising a purification box which is connected to each other by a first box body, a second box body and a third box body, wherein the internal spaces of the first box body, the second box body and the third box body are an isolation chamber, a cleaning chamber and a purification chamber respectively, a partition is fixedly connected to the top end of the inner part of the first box body, a disc movably connected to its opening is provided at the top end of the partition, three cylinders are fixedly penetrated and connected at equal intervals on the disc, three cylinders are installed on one side of the disc, all of which are located in the isolation chamber, the output ends of the three cylinders are movably penetrated through the three cylinders and extend to the cleaning chamber, one end of the output end of each cylinder is fixedly connected to a filter element bracket, and a filter element for purifying air is movably installed on each filter element bracket; The third box body is provided with a purification channel interconnected with the cleaning chamber inside, and the purification channel is the main part of the purification chamber. The left and right side walls of the third box body are provided with limit grooves that penetrate inside and outside, and sealing plates are symmetrically slidably connected in the limit grooves on both sides to separate the purification chamber from the cleaning chamber; A dust cleaning plate close to the outside of the circumferential edges of the three filters is installed on the inner wall of the second box body. The interior of the dust cleaning plate is hollow and the outer edges on both sides are fixedly connected to toothed ring plates. A plurality of boss plates facing the filter elements are arranged on the surface of one side of the dust cleaning plate. An air intake port that penetrates the inside of the dust cleaning plate is opened on the surface of each boss plate, which is used to absorb dust and other impurities attached to the surface of the filter element.

[0007] Preferably, the filter element support is a "U"-shaped structure, and a "U"-shaped notch is provided on both side plates of the filter element, and a pair of blocks are symmetrically provided on the edge of each side of the notch.

[0008] Preferably, the filter element comprises two parallel and symmetrical substrates, a short shaft is fixedly connected to the back-to-back surfaces of the two substrates, a filter cartridge is fixedly connected between the two substrates, and an exhaust connector is fixedly connected to one end of each short shaft.

[0009] Preferably, the substrate has a gear-like shape and meshes with the gear ring plate. The diameter of the substrate is larger than the diameter of the filter cartridge. The exhaust joint at one end of one of the short shafts is an open structure, and the exhaust joint at one end of the other short shaft is a closed structure.

[0010] Preferably, the short shaft is clamped in the notch on the side plate of the filter element bracket, and the diameter of the short shaft is smaller than the width of the notch, and the diameter of the short shaft is larger than the distance between two blocks located at the edge of the notch, so that the short shaft can rotate in the notch.

[0011] Preferably, an exhaust fan is provided at the inner top of the third box body, and a partition is provided on the inner wall of the third box body to isolate the exhaust fan from the purification channel, an exhaust pipe is installed on the partition and is located inside the purification channel and connected to the air inlet of the exhaust fan, and is used for connecting to the exhaust joint with an open structure in the filter element, and a plurality of air holes that communicate with the purification channel and external air are provided on the front, back, left and right surfaces of the third box body.

[0012] Preferably, motor 2 is installed on the outer surface of the third box body, and the output end of motor 2 is connected to a gear through a coupling. A rack plate is installed on the symmetrical sealing plates on both sides. The rack plates on both sides are parallel up and down and the rack directions are arranged opposite to each other. The rack plates on both sides are respectively meshed with the upper and lower ends of the gears. An arc-shaped groove is opened on the opposite surfaces of the two sealing plates, and a sealing gasket is fixedly connected in the groove.

[0013] Preferably, the purification channel is a rectangular parallelepiped structure, the cross-section of the bottom end of the purification channel is a square and the side length is greater than the sum of the outer diameter of the filter element and the length of the side plate of the filter element holder, so that the filter element is not blocked when entering and exiting the purification channel.

[0014] Preferably, a motor 1 is installed in the isolation chamber of the first housing, and the output end of the motor 1 is connected to the center of the disc through a coupling to drive the disc to rotate and thus drive the three filter elements to rotate.

[0015] Preferably, an exhaust fan is also installed in the isolation chamber of the first box body, and an air duct is fixedly connected to and penetrates the partition, one end of the air duct is located in the isolation chamber and connected to the exhaust port of the exhaust fan, and the other end extends into the cleaning chamber. A dust box for collecting dust and impurities is provided inside the exhaust fan, and one end of the dust box is movably extended to the outside of the first box body to facilitate its extraction from the outside for cleaning.

[0016] Compared with the prior art, the present invention provides an automatic circulating air purification and disinfection device for respiratory wards, which has the following beneficial effects: The disc is driven by a motor to rotate intermittently every time it rotates to 120°, and the rotation frequency is the same, so that the three filter elements located outside the purification channel can be replaced alternately. After the filter elements are replaced, they are pushed into the purification channel through the cylinder, and then the purification channel is closed and the purification operation is performed. In this way, three filter elements are arranged in the device and can be used alternately, so as to achieve the effect of efficient circulation and purification of the air.

[0017] By starting the vacuum fan, the dust and impurities in the cleaning chamber are adsorbed outward along several short axes, wherein the two filter elements attached to the outer side of the dust cleaning plate are first adsorbed by several boss plates, and the several boss plates can adsorb the dust and impurities on the surface of each filter element at least twice, thereby improving the cleaning effect of the filter element. Alternating replacement and cleaning of three filter elements in the same purification device helps to increase the continuous use time of the purification device, and saves the steps of repeated manual disassembly, replacement and cleaning of the filter element, thereby helping to extend the service life of the purification device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 This is a schematic diagram of the overall external structure of the purification box of the present invention; Figure 2 This is a schematic diagram of the internal structure of the second box body of the purification box of the present invention; Figure 3 This is a schematic diagram of the structure of the first box body of the present invention; Figure 4 This is a diagram showing the internal structure connection between the first box and the second box of the present invention; Figure 5 A diagram showing the connection between the filter element and the dust cleaning plate of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of part a; Figure 7 It is a partial cutaway view of the second housing of the present invention; Figure 8 This is a schematic diagram of the filter structure of the present invention; Fig. 9 This is a partial structural exploded view of the third box of the present invention; Fig.10 For the present invention Figure 7 Schematic diagram from another perspective; Fig.11 This is a disassembled diagram of the filter element and the disc of the present invention.

[0019] Description of reference numerals: First housing; 11, partition; 12, disc; 121, cylinder; 122, cylinder; 123, filter element bracket; 124, stopper; 13, motor 1; The second box; The third box; 31, purification channel; 32, limit groove; 321, sealing plate; 322, rack plate; 323, sealing pad; 33, exhaust pipe; 34, motor 2; 341, gear; Filter element; 41, substrate; 42, short shaft; 43, filter cartridge; 44, exhaust connector; Dust cleaning plate; 51, gear ring plate; 52, boss plate; 53, air extractor; 531, air duct; 54, dust collecting box. DETAILED DESCRIPTION

[0020] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0021] like Figure 1-11 As shown, it is the first embodiment of the present invention. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic circulating air purification and disinfection device for a respiratory ward, comprising a purification box which is connected to each other by a first box body 1, a second box body 2 and a third box body 3, the internal spaces of the first box body 1, the second box body 2 and the third box body 3 are an isolation chamber, a cleaning chamber and a purification chamber respectively, a partition 11 is fixedly connected to the top end of the inner part of the first box body 1, a disc 12 movably connected to its opening is provided at the top end of the partition 11, three cylinders 121 are fixedly connected and penetrated on the disc 12 at equal intervals, three cylinders 122 are installed on one side of the disc 12, all of which are located in the isolation chamber, and the outputs of the three cylinders 122 The ends respectively movably penetrate the three cylinders 121 and extend to the cleaning chamber, one end of the output end of each cylinder 122 is fixedly connected to a filter element bracket 123, and each filter element bracket 123 is movably mounted with a filter element 4 for purifying the air, a motor 13 is installed in the isolation chamber of the first housing 1, and the output end of the motor 13 is connected to the center of the disc 12 through a coupling, so as to drive the disc 12 to rotate and thus drive the three filter elements 4 to rotate, wherein the disc 12 rotates in an intermittent manner every time it rotates to 120°, and the rotation frequency is the same so that the three filter elements 4 can be alternately used in a cycle, thereby extending the service life of the air purification device.

[0022] Furthermore, the filter element 4 includes two parallel and symmetrical substrates 41, a short shaft 42 is fixedly connected to the back-to-back surfaces of the two substrates 41, and a filter cartridge 43 is fixedly connected between the two substrates 41, and an exhaust connector 44 is fixedly connected to one end of each short shaft 42. The substrate 41 has a gear-like shape and meshes with the gear ring plate 51. The diameter of the substrate 41 is larger than the diameter of the filter cartridge 43. The exhaust connector 44 located at one end of one of the short shafts 42 is an open structure, and the exhaust connector 44 located at one end of the other short shaft 42 is a closed structure. The filter cartridge bracket 123 is a "U"-shaped structure, and a "U"-shaped notch is opened on both side plates of the filter element 4. A pair of blocks 124 are symmetrically provided on the edge of each side of the notch, and the short shaft 42 is clamped in the notch on the side plate of the filter element bracket 123. When the filter element 4 is installed on the filter element bracket 123, the two short shafts 42 of the filter element 4 are respectively clamped in the two "U"-shaped notches on the two side plates of the filter element bracket 123. The block 124 is made of rubber material and has a certain elasticity to facilitate the clamping of the short shaft 42, so that the installed filter element 4 is not easy to fall off. The diameter of the short shaft 42 is smaller than the width of the notch, and the diameter of the short shaft 42 is larger than the distance between the two blocks 124 located at the edge of the notch, so that the short shaft 42 can rotate in the notch, so that the filter element 4 and the filter element bracket 123 are dynamically connected.

[0023] When the above embodiment is working, in the initial state, the three filter elements 4 are all in the cleaning cavity, and one of them corresponds to the outside of the purification channel 31. When the purification device is used, the cylinder 122 connected to the corresponding position on the filter element 4 located outside the purification channel 31 is opened, and the output end of the cylinder 122 pushes the filter element bracket 123, and the filter element bracket 123 simultaneously drives the filter element 4 to move into the purification channel 31 until the exhaust joint 44 with an open structure at one end of the filter element 4 is sleeved on the exhaust pipe 33. When the opening at one end of the purification channel 31 is closed, the air purification operation can be performed; When another filter element 4 needs to be replaced, the filter element 4 already in the third box body 3 is moved back to the cleaning chamber, and the motor 13 is started to drive the disc 12 to rotate to 120°, and the other filter element 4 is moved to the outside of the purification channel 31. The filter element 4 is pushed into the purification channel 31 through the cylinder 122 connected to its corresponding position. Repeating the above operation can realize the alternating replacement of the three filter elements 4 and achieve the effect of efficient circulation and purification of the air.

[0024] Embodiment 2, as Figure 7-10As shown, a purification channel 31 communicating with the cleaning chamber is provided inside the third box body 3, and the purification channel 31 is the main part of the purification chamber. The left and right side walls of the third box body 3 are provided with limit grooves 32 that penetrate inside and outside, and sealing plates 321 are symmetrically slidably connected in the limit grooves 32 on both sides, which are used to separate the purification chamber from the cleaning chamber. An exhaust fan is provided at the top of the interior of the third box body 3, and a partition is provided on the inner wall of the third box body 3 to isolate the exhaust fan from the purification channel 31, and a fan located inside the purification channel 31 and in contact with the exhaust fan is installed on the partition. The exhaust pipe 33 connected to the air outlet is used to connect with the exhaust joint 44 with an open structure in the filter element 4. The outer surface of the exhaust pipe 33 is provided with a rubber ring to facilitate the interference fit of the exhaust joint 44 when it is sleeved thereon, and has good sealing performance. The front, back, left and right surfaces of the third box body 3 are provided with a plurality of air holes that communicate with the purification channel 31 and the external air. During the exhaust process of the exhaust fan, the air outside the purification box is drawn into the purification channel 31 along the plurality of air holes. After being purified by the filter element 4, the external air can be discharged to the outside of the third box body 3 along the exhaust pipe 33.

[0025] Further, such as Fig. 9 As shown, a motor 2 34 is installed on the outer surface of the third box body 3, and the output end of the motor 2 34 is connected to a gear 341 through a coupling. A rack plate 322 is installed on the symmetrical sealing plates 321 on both sides, and the rack plates 322 on both sides are parallel to each other and the rack directions are arranged oppositely. The rack plates 322 on both sides are respectively meshed with the upper and lower ends of the gear 341, and an arc-shaped groove is opened on the opposite surfaces of the two sealing plates 321, and a sealing gasket 323 is fixedly connected in the groove. The gear 341 is driven to rotate by the motor 2 34, and the gear 341 drives the two rack plates 322 at its upper and lower ends to move relative to or towards each other, respectively, so that the two sealing plates 321 are synchronously moved relative to or towards each other, and when the two sealing plates 321 move relative to each other until they are in close contact, the arc-shaped grooves of the two sealing plates 321 and the sealing gaskets 323 are respectively squeezed on the two side surfaces of the short shaft 42, and the purification channel 31 is sealed at this time.

[0026] Furthermore, the purification channel 31 is a rectangular structure, and the cross-section of the bottom end of the purification channel 31 is a square and the side length is greater than the sum of the outer diameter of the filter element 4 and the length of the side plate of the filter element bracket 123, so that the filter element 4 is not blocked when entering and exiting the purification channel 31. After intermittent rotation at a fixed frequency, each filter element 4 can be positioned directly below the purification channel 31, so as to ensure that the filter element 4 is not touched after being pushed into the purification channel 31. Whenever one of the filter elements 4 rotates to the outside of the purification cavity corresponding to the third box body 3, the cylinder 122 connected to the second box body 2 starts and pushes the entire filter element 4 into the purification channel 31 of the third box body 3. At this time, the exhaust fan in the third box body 3 starts and performs air purification operation.

[0027] When the above embodiment is working, after the filter element 4 is pushed into the purification channel 31, the motor 2 34 is started to rotate the driving gear 341, and the gear 341 drives the two rack plates 322 at the upper and lower ends thereof to make relative translation, thereby making the two sealing plates 321 to make relative translation synchronously. When the opposite surfaces of the two sealing plates 321 move to close contact, the arc-shaped grooves of the two sealing plates 321 and the sealing gaskets 323 are respectively pressed on the two side surfaces of the short shaft 42, and the purification channel 31 is sealed at this time. At this time, the air purification operation in the purification channel 31 can continue; When the filter element 4 needs to be replaced, start the motor 2 34 to drive the gear 341 in the opposite direction to the above operation, so that the gear 341 drives the two rack plates 322 at its upper and lower ends to translate toward each other, thereby causing the two sealing plates 321 to translate toward each other synchronously. At this time, the two sealing plates 321 no longer close the purification channel 31, and the filter element 4 can be moved back from the purification channel 31 to the purification chamber, so that different filter elements 4 can be rotated and replaced conveniently.

[0028] Embodiment three, as Figure 1-6 As shown, a dust cleaning plate 5 is installed on the inner wall of the second box body 2, which is close to the outer side of the circumferential edge of the three filter elements 4. The interior of the dust cleaning plate 5 is hollow and the outer edges on both sides are fixedly connected with toothed ring plates 51. One side surface of the dust cleaning plate 5 is provided with a plurality of boss plates 52 facing the filter element 4. The table surface of each boss plate 52 is provided with an air intake port that penetrates the interior of the dust cleaning plate 5, which is used to absorb dust and other impurities attached to the surface of the filter element 4. When the filter element 4 moves to the corresponding position of the dust cleaning plate 5, the base plates 41 on both sides of the filter element 4 are respectively meshed with the toothed ring plates 51 on both sides of the dust cleaning plate 5, so that when the filter element 4 revolves along the central axis of the disc 12, it can rotate under the meshing of the toothed ring plates 51, so that each arc surface of the filter element 4 can rotate cyclically close to the plurality of boss plates 52.

[0029] Furthermore, an air extractor 53 is installed in the isolation chamber of the first box body 1, and an air guide pipe 531 is fixedly connected to and penetrates the partition 11. One end of the air guide pipe 531 is located in the isolation chamber and connected to the air suction port of the air extractor 53, and the other end extends to the cleaning chamber. When the filter element 4 is replaced, the rotating disc 12 drives the three filter elements 4 to rotate respectively. At this time, the air extractor 53 is started and negative pressure adsorption is performed on the cleaning chamber through the air guide pipe 531. The purification channel 31 is in an open state and communicates with the cleaning chamber. A small amount of dust and impurities located inside the purification channel 31 will fall into the cleaning chamber. Finally, all impurities in the cleaning chamber are sucked out by the air extractor 53. Figure 5As shown, first, the two filter elements 4 attached to the outer side of the dust cleaning plate 5 are first adsorbed by the several boss plates 52, and the three filter elements 4 rotate while revolving, and the negative pressure generated by the suction ports of the several boss plates 52 adsorbs the dust and impurities on the surface of the filter elements 4, and the arc length of the dust cleaning plate 5 is greater than twice the arc length of the filter element 4, so that each filter element 4 can be adsorbed at least twice, thereby improving the cleaning effect of the filter element 4, and a dust collecting box 54 for collecting dust and impurities is arranged inside the vacuum pump 53, and one end of the dust collecting box 54 is movably extended to the outside of the first box body 1 to facilitate its extraction and cleaning from the outside, and after a long period of and multiple cycles of alternating use and cleaning of the three filter elements 4, the dust and impurities on the filter elements 4 are all collected in the dust collecting box 54, and the dust collecting box 54 can be cleaned regularly.

[0030] When the above embodiment is working, when the filter element 4 is replaced, the rotating disc 12 drives the three filter elements 4 to rotate respectively. At this time, the air pump 53 is started and negative pressure adsorption is performed on the cleaning chamber through the air guide pipe 531. The purification channel 31 is in an open state and communicates with the cleaning chamber. Under the action of negative pressure adsorption, the dust and impurities inside the purification channel 31 will fall into the cleaning chamber. Finally, all impurities in the cleaning chamber are sucked out by the air pump 53, among which the two filter elements 4 attached to the outer side of the dust cleaning plate 5 are first adsorbed by the plurality of boss plates 52. Since the three filter elements 4 rotate while revolving, the negative pressure generated by the suction ports of the plurality of boss plates 52 can adsorb the dust and impurities on the surface of the filter element 4 at least twice, thereby improving the cleaning effect of the filter element 4. After a long period of time and multiple cycles of alternating use and cleaning of the three filter elements 4, the dust and impurities on the filter elements 4 are all collected in the dust collecting box 54. The dust collecting box 54 can be cleaned regularly, which not only increases the continuous use time of the purification device, but also saves the steps of repeatedly disassembling, replacing and cleaning the filter element, thereby helping to extend the service life of the purification device.

[0031] When all the above embodiments are working, the motor 13, the exhaust fan 53, the motor 2 34 and the exhaust fan respectively installed in the isolation chamber, the cleaning chamber and the purification chamber are all controlled to open and close by the same controller, an ultraviolet irradiation lamp is installed in the purification channel 31 for air disinfection, and a position sensor is installed at a fixed position in the cleaning chamber, such as the opening edge of the purification channel 31. The three cylinders 122 are automatically opened and closed by receiving the position sensor signal, and the position sensor is electrically connected to the controller; an LS116 type light transmittance tester is also installed in the purification channel 31 of the third box body 3, which is used to detect the transmittance of the internal filter element 4 to determine the amount of dust and impurities adsorbed on the filter element 4, so as to facilitate the replacement of the filter element 4. The light transmittance tester is electrically connected to the controller and can transmit the detection data to the controller. When the filter element 4 located in the third box body 3 does not meet the replacement conditions, the exhaust fan is controlled by the controller to be in the open state, and the motor 2 34, the cylinder 12 2. Motor 1 13 and the air extractor 53 are both in the off state; when the filter element 4 located in the third box body 3 reaches the replacement condition, the controller first turns off the exhaust fan, and then starts the motor 2 34 in sequence to drive each component to open the purification channel 31, starts the cylinder 122 at the corresponding position of the filter element 4 to extract the filter element 4 from the inside of the purification channel 31, starts the air extractor 53 to negatively adsorb the cleaning chamber, starts the motor 13 to drive the disc 12 and the three filter elements 4 to rotate 120°, and when the adjacent filter element 4 rotates to just below the purification channel 31, the cylinder 122 at the corresponding position of the filter element 4 receives the signal of the position sensor and pushes it into the purification channel 31, at this time, the motor 2 34 drives each component to close the purification channel 31, the air extractor 53 is turned off, and the exhaust fan located in the third box body 3 is turned on to continue the air purification operation. The above process can be cyclically carried out in a relatively short time, so that the air purification can be carried out continuously and efficiently.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic circulating air purification and disinfection device for a respiratory ward, comprising a purification box composed of a first box body (1), a second box body (2) and a third box body (3) connected to each other as a whole, characterized in that: The internal spaces of the first box body (1), the second box body (2) and the third box body (3) are respectively an isolation chamber, a cleaning chamber and a purification chamber; a partition (11) is fixedly connected to the internal top end of the first box body (1); a disc (12) movably connected to the opening of the partition (11) is provided at the top end; three cylinders (121) are fixedly penetrated and connected to the disc (12) at equal intervals; three cylinders (122) are installed on one side of the disc (12), all of which are located in the isolation chamber; the output ends of the three cylinders (122) respectively movably penetrate the three cylinders (121) and extend to the cleaning chamber; one end of the output end of each cylinder (122) is fixedly connected to a filter element bracket (123); and a filter element (4) for purifying air is movably installed on each filter element bracket (123); The third box body (3) has a purification channel (31) in communication with the cleaning chamber, the purification channel (31) being the main part of the purification chamber, the left and right side walls of the third box body (3) are each provided with a limiting groove (32) that penetrates inside and outside, and sealing plates (321) are symmetrically slidably connected in the limiting grooves (32) on both sides, for isolating the purification chamber from the cleaning chamber; The inner wall of the second housing (2) is provided with a dust cleaning plate (5) close to the outer side of the circumferential edge of the three filter elements (4); the interior of the dust cleaning plate (5) is hollow and both outer side edges are fixedly connected to toothed ring plates (51); a plurality of boss plates (52) facing the filter elements (4) are provided on one side surface of the dust cleaning plate (5); each boss plate (52) is provided with an air inlet on the surface thereof which is connected to the interior of the dust cleaning plate (5) and is used for absorbing dust and other impurities attached to the surface of the filter element (4).

2. The automatic circulating air purification and disinfection device for respiratory wards according to claim 1 is characterized in that: The filter element support (123) is a "U"-shaped structure, and a "U"-shaped notch is provided on both side plates of the filter element (4), and a pair of stoppers (124) are symmetrically provided on the edge of each side of the notch.

3. The automatic circulating air purification and disinfection device for respiratory wards according to claim 2 is characterized in that: The filter element (4) comprises two parallel and symmetrical base plates (41), a short shaft (42) being fixedly connected to the back-to-back surfaces of the two base plates (41), a filter cartridge (43) being fixedly connected between the two base plates (41), and an exhaust joint (44) being fixedly connected to one end of each short shaft (42).

4. The automatic circulating air purification and disinfection device for respiratory wards according to claim 3 is characterized in that: The base plate (41) has a gear-like appearance and meshes with the gear ring plate (51); the diameter of the base plate (41) is greater than the diameter of the filter cartridge (43); the air exhaust joint (44) located at one end of one of the short shafts (42) is an open structure, and the air exhaust joint (44) located at one end of the other short shaft (42) is a closed structure.

5. The automatic circulating air purification and disinfection device for respiratory wards according to claim 3 is characterized in that: The short shaft (42) is clamped in a notch on a side plate of the filter element support (123), and the diameter of the short shaft (42) is smaller than the width of the notch, and the diameter of the short shaft (42) is larger than the distance between two stoppers (124) located at the edge of the notch, so that the short shaft (42) can rotate in the notch.

6. The automatic circulating air purification and disinfection device for respiratory wards according to claim 1 is characterized in that: An exhaust fan is provided at the top of the interior of the third box (3), and a partition is provided on the inner wall of the third box (3) to isolate the exhaust fan from the purification channel (31). An exhaust pipe (33) located inside the purification channel (31) and connected to the air inlet of the exhaust fan is installed on the partition for connecting to an exhaust joint (44) with an open structure in the filter element (4). A plurality of air holes are provided on the front, back, left and right surfaces of the third box (3) to communicate with the purification channel (31) and the outside air.

7. The automatic circulating air purification and disinfection device for respiratory wards according to claim 1 is characterized by: The outer surface of the third housing (3) is mounted with a second motor (34), the output end of the second motor (34) is connected to a gear (341) via a coupling, a rack plate (322) is mounted on each of the sealing plates (321) symmetrically on both sides, the rack plates (322) on both sides are parallel to each other and the racks are arranged in opposite directions, the rack plates (322) on both sides are respectively meshed with the upper end and the lower end of the gear (341), and an arc-shaped groove is formed on the opposite surfaces of the two sealing plates (321), and a sealing gasket (323) is fixedly connected in the groove.

8. The automatic circulating air purification and disinfection device for respiratory wards according to claim 1 is characterized in that: The purification channel (31) is a rectangular parallelepiped structure, the cross-section of the bottom end of the purification channel (31) is a square and the side length is greater than the sum of the outer diameter of the filter element (4) and the length of the side plate of the filter element support (123), so that the filter element (4) is not blocked when entering and exiting the purification channel (31).

9. The automatic circulating air purification and disinfection device for respiratory wards according to claim 1, characterized in that: A motor 1 (13) is installed in the isolation chamber of the first housing (1), and the output end of the motor 1 (13) is connected to the center of the disc (12) via a coupling, so as to drive the disc (12) to rotate and thus drive the three filter elements (4) to rotate.

10. The automatic circulating air purification and disinfection device for respiratory wards according to claim 1, characterized in that: An air extractor (53) is also installed in the isolation chamber of the first box body (1), and an air guide duct (531) is fixedly connected to and penetrates the partition plate (11); one end of the air guide duct (531) is located in the isolation chamber and connected to the air suction port of the air extractor (53), and the other end extends into the cleaning chamber; a dust collecting box (54) for collecting dust and impurities is arranged inside the air extractor (53); one end of the dust collecting box (54) movably extends to the outside of the first box body (1) to facilitate extraction and cleaning of the dust collecting box from the outside.

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