Air filtering and sterilizing device

Abstract

The invention discloses an air filtering and sterilizing device which comprises a box body, a pre-filtering net, an HEPA (High Efficiency Particulate Air) filtering net, an ultraviolet lamp, an activated carbon filter element, a dust removal device and an exhaust fan, an air inlet and an air outlet are formed in the box body; the pre-filter screen, the HEPA filter screen, the ultraviolet lamp and the activated carbon filter element are arranged in the box body; and an air inlet of the exhaust fan is communicated with the air outlet. According to the air purification device, particles in air are filtered, meanwhile, microorganisms such as bacteria and viruses in the air are killed, harmful gas and peculiar smell in the air are removed, the air treatment quality is effectively improved, and therefore normal operation of equipment in a clean room and health and safety of workers are guaranteed; and secondly, automatic cleaning of the pre-filtering net is realized, and the replacement frequency of the filtering net is reduced, so that the cost is reduced, and dust can be prevented from flowing back into a clean environment to damage the clean environment.

Description

Technical Field

[0001] The invention belongs to the technical field of clean room purification, and in particular relates to an air filtering and sterilizing device. Background Art

[0002] With the rapid development of modern science and technology and the continuous improvement of people's living standards, clean rooms (such as laboratories, operating rooms, precision manufacturing workshops, etc.) are increasingly widely used in all walks of life. Clean rooms have extremely high requirements for indoor air quality, because pollutants such as particles, bacteria, and viruses in the air will not only affect the operating accuracy of precision equipment, but may also pose a threat to the health of workers, especially in the medical, pharmaceutical, food processing and other industries, where air cleanliness is directly related to product quality and safety.

[0003] At present, clean room air mainly relies on air purification devices for purification, but traditional technologies still have the following problems in practical applications:

[0004] 1) Insufficient filtration efficiency: Traditional filters have limited filtering effects on tiny particles and microorganisms, and it is difficult to meet high cleanliness requirements;

[0005] 2) High maintenance cost: The filter needs to be replaced frequently, and the replacement process may cause the clean environment to be destroyed, increasing the company's operating costs;

[0006] 3) Limited sterilization ability: Existing technologies mostly rely on physical filtration and lack effective means to kill microorganisms such as bacteria and viruses.

[0007] Therefore, it is necessary to design a manual packaging device to effectively solve the above technical problems. Summary of the invention

[0008] In order to solve the problems existing in the prior art, the present invention aims to provide an air filtering and sterilizing device to improve the filtering effect, reduce the cost, and kill microorganisms such as bacteria and viruses.

[0009] In order to achieve the above technical objectives and effects, the present invention is implemented through the following technical solutions:

[0010] An air filtering and sterilizing device, comprising:

[0011] A box body, wherein an air inlet and an air outlet are provided on the box body;

[0012] Pre-filter, used to filter large particles in the air;

[0013] HEPA filter is used to filter small particles in the air while filtering bacteria and viruses in the air;

[0014] Ultraviolet light uses ultraviolet light to destroy the DNA or RNA molecular structure in the cells of microorganisms to achieve sterilization and disinfection;

[0015] Activated carbon filter element is used to absorb harmful gases and odors in the air and improve the freshness of the air;

[0016] A dust removal device for cleaning the pre-filter;

[0017] An exhaust fan, used to drive air flow;

[0018] Wherein, the pre-filter, the HEPA filter, the ultraviolet lamp and the activated carbon filter are arranged in the box; the air inlet of the exhaust fan is connected to the air outlet.

[0019] Furthermore, the box body is formed with connected chambers A, B, C, D and E; chamber A is connected to the air inlet, and chamber E is connected to the air outlet; the pre-filter is arranged at the connecting port between chamber A and chamber B, the HEPA filter is arranged at the connecting port between chamber B and chamber C, the ultraviolet lamp is arranged in chamber C, the activated carbon filter element is arranged in chamber D, and the upper end of the activated carbon filter element is connected to the connecting port between chamber D and chamber E, and the lower end of the activated carbon filter element is in contact with the bottom surface of chamber D; the dust removal device is arranged at the upper end of chamber B.

[0020] Furthermore, the dust removal device includes a fixed plate, on which a dust removal mechanism capable of cleaning the pre-filter and an isolation mechanism capable of isolating the HEPA filter are arranged.

[0021] Furthermore, the dust removal mechanism includes a dust removal cylinder arranged on the fixed plate through a first cylinder bracket, the front end of the dust removal cylinder piston rod passes through the fixed plate and is connected to a nozzle, the nozzle is provided with a nozzle and is connected to an air supply pipe, and the air supply pipe can slide through the fixed plate.

[0022] Furthermore, at least two groups of first guide shafts are provided on the nozzle, and the first guide shafts can slidably pass through the fixing plate.

[0023] Furthermore, the isolation mechanism includes an isolation cylinder arranged on the fixed plate through a second cylinder bracket, the front end of the isolation cylinder piston rod is provided with a pressure plate connection that can slide through the fixed plate, the upper end of the pressure plate is provided with at least two groups of second guide shafts, the upper end of the second guide shaft can slide through the second cylinder bracket, and a partition plate is provided in the chamber B below the pressure plate.

[0024] Furthermore, a collecting box is respectively provided at the lower end of the chamber A and the chamber B, and a backflow plate is respectively provided in the chamber A and the chamber B located above the collecting box; and a baffle is provided on the box body for facilitating the taking and placing of the collecting box.

[0025] Furthermore, a supporting mechanism capable of floating up and down is provided between the activated carbon filter element and the bottom surface of the chamber D.

[0026] Furthermore, the support mechanism includes a mounting plate, in which a plurality of groups of limit bolts that can slide up and down are passed, and the upper ends of the limit bolts are connected to a movable plate, and a spring is respectively sleeved on the limit bolts located between the mounting plate and the movable plate.

[0027] Furthermore, an air check valve is provided in the air inlet.

[0028] The beneficial effects of the present invention are as follows: the present invention achieves filtering of particles in the air while killing bacteria, viruses and other microorganisms in the air and removing harmful gases and odors in the air by setting a pre-filter, a HEPA filter, an ultraviolet lamp and an activated carbon filter element, thereby effectively improving the air treatment quality, thereby ensuring the normal operation of equipment in the clean room and the health and safety of workers; secondly, in this application, by setting a dust removal device, automatic cleaning of the pre-filter is achieved, the frequency of filter replacement is reduced, thereby reducing costs; in addition, by setting an air check valve in the air inlet of the box, it is effectively avoided that the dust removal device is in the process of cleaning the pre-filter or replacing the pre-filter, and dust flows into the clean environment through the air inlet direction, causing the clean environment to be destroyed.

[0029] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0031] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention;

[0032] Figure 2 This is a schematic diagram of the device of the present invention without the exhaust fan;

[0033] Figure 3 This is a schematic diagram of the device of the present invention without some box plates;

[0034] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0035] Figure 5 It is a schematic diagram of the structure of the dust removal device of the present invention;

[0036] Figure 6 It is a schematic diagram of three parallel implementation methods of the present invention.

[0037] Explanation of the numbers in the figure: 1. Box body; 2. Pre-filter; 3. HEPA filter; 4. Ultraviolet lamp; 5. Activated carbon filter; 6. Dust removal device; 11. Air inlet; 12. Air outlet; 13. Chamber A; 14. Chamber B; 15. Chamber C; 16. Chamber D16; 17. Chamber E; 18. Baffle; 19. Sealing plate; 20. Cover plate; 21. Connecting plate; 61. Fixed plate; 62. Dust removal mechanism; 63. Isolation mechanism; 621. Dust removal cylinder; 622. Nozzle; 623. Air supply pipe; 624. First guide shaft; 625. First cylinder bracket; 631. Isolation cylinder; 632. Press plate; 633. Second guide shaft; 634. Partition plate; 111. Air check valve; 101. Mounting plate; 102. Limit bolt; 103. Movable plate; 104. Spring. DETAILED DESCRIPTION

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, upper end, lower end, top, bottom...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] See also Figure 1-2 As shown, an air filtering and sterilizing device is characterized in that it includes a box body 1, on which an air inlet 11 and an air outlet 12 are provided; the air outlet 12 is connected to an exhaust fan 7 through a corresponding pipeline; when in use, the exhaust fan 7 drives air to flow into the box body 1 through the air inlet 11 and out of the air outlet 12.

[0041] In this embodiment, in order to filter and sterilize the air flowing into the box 1, see Figure 3As shown, the box body 1 is formed with a connected chamber A13, a chamber B14, a chamber C15, a chamber D16 and a chamber E17; the chamber A13 is connected to the air inlet 11, the chamber E17 is connected to the air outlet 12, and a pre-filter 2 for filtering large particles (such as dust, hair, etc.) in the air is arranged at the connecting port between the chamber A13 and the chamber B14; a HEPA filter 3 for filtering small particles (particles larger than 0.3 microns) and microorganisms such as bacteria and viruses in the air is arranged at the connecting port between the chamber B14 and the chamber C15; a filter 3 is arranged in the chamber C15 to destroy DNA or RNA molecular structures in the cells of microorganisms by ultraviolet rays. Structure, to achieve the sterilization and disinfection effect of the ultraviolet lamp 4; an activated carbon filter element 5 is arranged in the chamber D16 for absorbing harmful gases and odors in the air and improving the freshness of the air, the upper end of the activated carbon filter element 5 is connected to the connecting port between the chamber D16 and the chamber E17, and the lower end of the activated carbon filter element 5 is in contact with the bottom surface of the chamber D16 and is sealed with the bottom surface of the chamber D16; when in use, the air flows into the chamber A13 through the air inlet 11, and then passes through the pre-filter 2, the chamber B14, the HEPA filter 3, the chamber C15, the chamber D16, the activated carbon filter element 5, the chamber E17 and the air outlet 12 in sequence, and finally flows out through the exhaust port of the exhaust fan 7.

[0042] Among them, in this embodiment, see Figure 2 As shown, the box body 1 is provided with a sealing plate 19 for facilitating the installation and replacement of the pre-filter 2 and the HEPA filter 3. The sealing plate 19 is detachably arranged on the box body 1, and when the box body 1 is connected, the sealing plate 19 is sealed and connected to the box body 1; secondly, in this embodiment, see Figure 3 As shown, a connecting plate 21 is provided in the chamber C15, and the connecting plate 21 divides the chamber D16 into two chambers connected up and down, and the end surface of the connecting plate 21 located in each chamber is provided with five groups of ultraviolet lamps 4 evenly distributed from top to bottom. Of course, the above is only one implementation method and is not intended to limit the scope of the present application. In actual settings, it can be set according to actual needs.

[0043] Furthermore, in this embodiment, when filtering the air, since the pre-filter 2 is used as the first filter and filters large particles (such as dust, hair, etc.) in the air, a large amount of dust will be deposited on the pre-filter 2 as the filtering time goes by, causing the pre-filter 2 to be blocked, thereby causing the air flow to slow down, thereby affecting the filtering efficiency of the air; therefore, in this embodiment, see Figure 3As shown, a dust removal device 6 is provided at the upper end of the chamber B14, and the pre-filter 2 can be cleaned by the dust removal device 6, thereby reducing the replacement frequency of the pre-filter 2 and reducing the cost.

[0044] Among them, continue to see Figure 3 As shown, in this embodiment, the dust removal device 6 includes a fixed plate 61, and the fixed plate 61 is installed in the chamber B14, and the chamber B14 is divided into two upper and lower chambers through the fixed plate 61; the fixed plate 61 is provided with a dust removal mechanism 62 for cleaning the pre-filter 2 and an isolation mechanism 63 for isolating the HEPA filter 3.

[0045] See also Figure 3-4 As shown, in the present embodiment, the dust removal mechanism 62 comprises a dust removal cylinder 621 which is arranged on the fixed plate 61 through a first cylinder bracket 625, the front end of the piston rod of the dust removal cylinder 621 passes through the fixed plate 61 and is connected to a nozzle 622, the nozzle 622 is provided with a nozzle opening 6221 and is connected to an air supply pipe 623, the air supply pipe 623 can slide through the fixed plate 61; when in use, the nozzle opening 6221 is opened toward the pre-filter 2, and the upper end of the air supply pipe 623 is connected to an external air supply device through a corresponding air pipe; when cleaning, the dust removal cylinder 621 drives the nozzle 622 to move downward, and the external air supply device supplies air to the nozzle 622 through the air supply pipe 623, thereby realizing the cleaning of the dust deposited on the pre-filter 2 by backblowing.

[0046] In this embodiment, in order to improve the stability of the nozzle 622 moving up and down, continue to refer to Figure 3-4 As shown, two groups of first guide shafts 624 are further provided on the nozzle 622 , but the two groups are not limited thereto, and more groups may be provided, depending on actual needs. The first guide shafts 624 may slide through the fixing plate 61 .

[0047] Continue to see Figure 3-4As shown, in this embodiment, the isolation mechanism 63 includes an isolation cylinder 631 arranged on the fixed plate 61 through a second cylinder bracket 635, and the front end of the piston rod of the isolation cylinder 631 is provided with a pressure plate 632 that can slide through the fixed plate 61, and the upper end of the pressure plate 632 is provided with two groups of second guide shafts 633, but it is not limited to two groups, and more groups can also be provided, which can be specifically provided according to actual needs. The upper end of the second guide shaft 633 can slide through the second cylinder bracket 635, and a partition plate 634 is provided in the chamber B14 below the pressure plate 632, and the lower end of the partition plate 634 is fixedly connected to the bottom surface of the chamber B14, and the upper end of the partition plate 634 is "concave", and the upper end of the partition plate 634 is connected to the lower end of the fixed plate 61. fixedly connected, thereby realizing dividing the chamber B14 into two left and right chambers; wherein, in this embodiment, with the drive of the isolation cylinder 631, the pressure plate 632 can block or open the groove on the upper end of the partition plate 634 during the up and down movement, thereby realizing the connection or disconnection of the left and right chambers of the chamber B14; and in this embodiment, when the pre-filter 2 is to be cleaned, the isolation cylinder 631 drives the pressure plate 632 to move downward to block the groove on the upper end of the partition plate 634, thereby preventing dust from overflowing from the back of the pre-filter 2 during the cleaning process, and entering the right chamber of the chamber B14 through the groove on the upper end of the partition plate 634, causing the HEPA filter to be invaded, thereby affecting the service life of the HEPA filter.

[0048] For further information, see Figure 3 As shown, in this embodiment, in order to prevent dust from overflowing from the air inlet 11 during the cleaning process of the pre-filter 2, an air check valve 111 is provided in the air inlet 11.

[0049] For further information, see Figure 3 As shown, in the present embodiment, a collecting box 8 is respectively provided at the lower end of the chamber A13 and the chamber B14, and the dust cleaned from the pre-filter 2 is collected through the collecting box 8; and in the present embodiment, a backflow plate 9 is respectively provided in the chamber A13 and the chamber B14 located above the collecting box 8, and a baffle 18 is provided on the box body 1 for facilitating the taking and placing of the collecting box 8, and the baffle 18 is detachably provided on the box body 1, and when connected to the box body 1, the baffle 18 is sealedly connected to the box body 1.

[0050] For further information, see Figure 3As shown, in the present embodiment, two groups of the activated carbon filter elements 5 are arranged in the chamber D16, and a support mechanism 10 capable of floating up and down is arranged between the activated carbon filter elements 5 and the bottom surface of the chamber D16; the support mechanism 10 facilitates the disassembly and assembly of the activated carbon filter elements 5.

[0051] Among them, see Figure 4 As shown, in the present embodiment, the support mechanism 10 comprises a mounting plate 101, in which a movable plate 103 corresponding to the activated carbon filter element 5 and slidable up and down is inserted, and the upper end of the limiting bolt 102 is provided with a movable plate 103 corresponding to the activated carbon filter element 5 one by one, and the limiting bolts 102 located between the mounting plate 101 and the movable plate 103 are respectively sleeved with a spring 104, and in the absence of external force, the spring 104 has a tendency to drive the movable plate 103 to move upward; wherein, in the present embodiment, four groups of the limiting bolts 102 are connected to the lower side of each group of the movable plates 103, but it is not limited to four groups, and more groups can also be provided, and it can be provided according to actual needs; during installation, the activated carbon filter element 5 After the lower end of the spring 104 is mounted on the movable plate 103, the movable plate 103 is pressed downward to enable the activated carbon filter element 5 to penetrate into the connecting port between the chamber D16 and the chamber E17, and then the pressing action is released. At this time, under the action of the rebound force of the spring 104, the activated carbon filter element 5 is driven to move upward and is restricted between the movable plate 103 and the connecting port between the chamber D16 and the chamber E17. In this embodiment, a cover plate 20 is provided on the box body 1 for facilitating the removal of the activated carbon filter element 5 from the chamber D16 or the placement of the activated carbon filter element 5 into the chamber D16. The cover plate 20 is detachably arranged on the box body 1, and when connected to the box body 1, the cover plate 20 is sealed and connected to the box body 1.

[0052] The working principle of the present invention is as follows:

[0053] Before use, the air inlet 11 and the air outlet 12 in the device are connected to the clean room through corresponding pipelines respectively; when in use, start the exhaust fan 7. At this time, the air in the clean room flows into the chamber A13 through the air inlet 11, and then passes through the pre-filter 2, chamber B14, HEPA filter 3, chamber C15, chamber D16, activated carbon filter element 5, chamber E17 and air outlet 12 in sequence, and finally flows out through the exhaust port of the exhaust fan 7 and re-enters the clean room, thereby realizing continuous circulation and purification of the air in the clean room.

[0054] It should be noted that, in actual use, in addition to using the device in a single group, multiple groups of the device can be used in parallel according to actual needs, for example: Figure 3 Three sets of implementations are shown.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air filtration and sterilization device, characterized in that: include: A box body (1), wherein the box body (1) is provided with an air inlet (11) and an air outlet (12); A pre-filter (2) for filtering large particles in the air; HEPA filter (3), used to filter small particles in the air, as well as bacteria and viruses in the air; Ultraviolet light (4), which uses ultraviolet light to destroy the DNA or RNA molecular structure in the cells of microorganisms to achieve sterilization and disinfection; An activated carbon filter (5) is used to absorb harmful gases and odors in the air and improve the freshness of the air; A dust removal device (6) for cleaning the pre-filter (2); An exhaust fan (7), used for driving air flow; The pre-filter (2), the HEPA filter (3), the ultraviolet lamp (4) and the activated carbon filter element (5) are arranged in the box (1); and the air inlet of the exhaust fan (7) is connected to the air outlet (12).

2. The air filtration and sterilization device according to claim 1, characterized in that: The box body (1) is formed with a connected chamber A (13), a chamber B (14), a chamber C (15), a chamber D (16) and a chamber E (17); the chamber A (13) is connected to the air inlet (11), and the chamber E (17) is connected to the air outlet (12); the pre-filter (2) is arranged at the connecting port between the chamber A (13) and the chamber B (14), and the HEPA filter (3) is arranged at the connecting port between the chamber A (13) and the chamber B (14); ) and the connecting port of the chamber C (15), the ultraviolet lamp (4) is arranged in the chamber C (15), the activated carbon filter element (5) is arranged in the chamber D (16), and the upper end of the activated carbon filter element (5) is connected to the connecting port of the chamber D (16) and the chamber E (17), while the lower end of the activated carbon filter element (5) is in contact with the bottom surface of the chamber D (16); the dust removal device (6) is arranged at the upper end of the chamber B (14).

3. The air filtration sterilization device according to claim 1 or 2, characterized in that: The dust removal device (6) comprises a fixed plate (61), on which a dust removal mechanism (62) capable of cleaning the pre-filter (2) and an isolation mechanism (63) capable of isolating the HEPA filter (3) are arranged.

4. The air filtration and sterilization device according to claim 3, characterized in that: The dust removal mechanism (62) comprises a dust removal cylinder (621) which is arranged on the fixed plate (61) via a first cylinder bracket (625); the front end of the piston rod of the dust removal cylinder (621) passes through the fixed plate (61) and is connected to a nozzle (622); the nozzle (622) is provided with a nozzle (6221) and is connected to an air supply pipe (623); the air supply pipe (623) can slidably pass through the fixed plate (61).

5. The air filtration and sterilization device according to claim 4, characterized in that: At least two groups of first guide shafts (624) are also provided on the nozzle (622), and the first guide shafts (624) can slidably pass through the fixing plate (61).

6. The air filtration and sterilization device according to claim 3, characterized in that: The isolation mechanism (63) includes an isolation cylinder (631) arranged on the fixed plate (61) through a second cylinder bracket (635), and the front end of the piston rod of the isolation cylinder (631) is provided with a pressure plate (632) that can slide through the fixed plate (61) for connection, and the upper end of the pressure plate (632) is provided with at least two groups of second guide shafts (633), and the upper end of the second guide shaft (633) can slide through the second cylinder bracket (635), and a partition plate (634) is provided in the chamber B (14) below the pressure plate (632).

7. The air filtration and sterilization device according to claim 2, characterized in that: A collecting box (8) is provided at the lower end of the chamber A (13) and the chamber B (14), respectively; a deflector plate (9) is provided in the chamber A (13) and the chamber B (14) above the collecting box (8); and a baffle (18) is provided on the box body (1) for facilitating the taking and placing of the collecting box (8).

8. The air filtration and sterilization device according to claim 2, characterized in that: A support mechanism (10) capable of floating up and down is provided between the activated carbon filter element (5) and the bottom surface of the chamber D (16).

9. The air filtration and sterilization device according to claim 8, characterized in that: The support mechanism (10) comprises a mounting plate (101), wherein a plurality of groups of limit bolts (102) capable of sliding up and down are inserted into the mounting plate (101), a movable plate (103) is arranged at the upper end of the limit bolt (102), and a spring (104) is respectively sleeved on the limit bolt (102) located between the mounting plate (101) and the movable plate (103).

10. The air filtration sterilization device according to claim 1 or 2, characterized in that: An air check valve (111) is arranged in the air inlet (11).

Images