A portable filter and filtering method thereof

Abstract

The present invention relates to a portable filter and a filtering method thereof, comprising: a main body; a nozzle for ejecting gas; an air suction cylinder, swingingly arranged around the nozzle; a driving mechanism, arranged in the main body; a conveying channel, arranged in the main body; a first filter cartridge, obliquely arranged in the main body; a second filter cartridge, arranged in the main body around the first filter cartridge; wherein an air suction space is formed between adjacent air suction cylinders, and the air suction space adsorbs gas; the driving mechanism drives the air suction cylinder to swing, and adjusts the direction and width of the air suction end of the air suction space; one end of the conveying channel is connected to the air suction space; the other end of the conveying channel is connected to the first filter cartridge, and the other end of the conveying channel is also connected between the first filter cartridge and the second filter cartridge. The problem that the hazardous gas fills the laboratory and pollutes the entire laboratory, and the filtering efficiency of the air extraction device is low in the existing solution is solved.

Description

Technical Field

[0001] The invention relates to the field of filters, in particular to a portable filter and a filtering method thereof. Background Art

[0002] Laboratories are used for a wide variety of chemicals and various chemical experiments. Accidents often occur in laboratories, which produce harmful gases and threaten the lives and health of experimenters.

[0003] Experimenters often conduct tests in work cabinets. When an accident occurs, the cabinet's exhaust device is used to extract, filter and discharge hazardous gases. However, the space in the work cabinet is limited, and some tests cannot be conducted in the work cabinet.

[0004] Then, when an accident occurs in such experiments, the work cabinet is opened, the laboratory doors and windows are closed, the experimenters are evacuated, the laboratory is filled with hazardous gases, and the exhaust device on the work cabinet is used to extract and filter the hazardous gases.

[0005] This filtering method will cause hazardous gases to fill the laboratory and pollute the entire laboratory. The design of the exhaust device corresponds to the space of the work cabinet, which makes the filtering efficiency low when filtering the hazardous gases in the laboratory.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a portable filter and a filtering method thereof to solve the problems in the prior art that hazardous gases fill the laboratory and pollute the entire laboratory, and the filtering efficiency of the exhaust device is low.

[0008] To achieve the above object, the technical solution of the present invention is as follows:

[0009] A portable filter;

[0010] It comprises: a main body; a nozzle for spraying gas; an air suction cylinder, swingingly arranged around the nozzle; a driving mechanism, arranged in the main body; a conveying channel, arranged in the main body; a first filter cartridge, obliquely arranged in the main body; a second filter cartridge, arranged in the main body around the first filter cartridge;

[0011] Wherein, an air suction space is formed between adjacent air suction cylinders, and the air suction space absorbs gas; the driving mechanism drives the air suction cylinder to swing, and adjusts the direction and width of the air suction end of the air suction space; one end of the conveying channel is connected to the air suction space; the other end of the conveying channel is connected to the first filter cylinder, and the other end of the conveying channel is also connected between the first filter cylinder and the second filter cylinder;

[0012] The nozzle comprises: a block portion, a naan portion arranged in the block portion, a head portion communicating with the naan portion, and a valve device for opening and closing the head portion;

[0013] A mounting bracket is arranged at the lower end of the main body; the air suction cylinder comprises an arc plate connected to the mounting bracket and swinging around the nozzle; adjacent arc plates are stacked in sequence.

[0014] A further technical solution is that it also includes: a blowing device and an air suction device; the blowing end of the blowing device is connected to the nozzle; the air suction end of the air suction device is connected to the air suction space.

[0015] A further technical solution is that the naan portion is connected to the blowing end of the blowing device; and the valve device is arranged between the naan portion and the head portion.

[0016] A further technical solution is that the mounting bracket is installed with a first driving device and a ring cylinder; the first driving device drives the nozzle to move; the ring cylinder is arranged around the nozzle; the suction end of the suction device is connected to the suction space through the ring cylinder; the suction cylinder is swingably connected to the mounting bracket.

[0017] A further technical solution is that the driving mechanism is installed on the mounting bracket; an elastic device is provided at the swinging position of the arc plate of the air suction cylinder on one side; the elastic device pushes the arc plate of the air suction cylinder on one side close to the nozzle; and the driving mechanism drives the arc plate of the air suction cylinder on the other side to swing.

[0018] A further technical solution is that the first filter cylinder is provided with a first water storage cylinder for storing clean water and a second water storage cylinder for storing sewage; the first filter cylinder includes a plurality of filter tubes; adjacent filter tubes are connected to each other; the first water storage cylinder is connected to the upper end of the filter tube; and the second water storage cylinder is connected to the lower end of the filter tube.

[0019] A further technical solution is that a guide plate is provided between the first filter cartridge and the second filter cartridge, and the guide plate extends around the first filter cartridge to form a spiral arc.

[0020] A further technical solution is that smoke sensors are installed on the outside and inside of the air cylinder on the main body, and the smoke sensors detect the smoke concentration outside and inside of the air cylinder respectively.

[0021] A filtering method for a portable filter comprises the following steps:

[0022] Steps for setting the mode: Set the suction mode or suction + blowing mode according to the environmental conditions of the accident location; determine the suction volume of the suction cylinder and the spray volume of the nozzle according to the amount of harmful gas at the accident location; if there is no accident location, set the daily mode; determine the suction volume of the suction cylinder;

[0023] Preparation steps: Extend the support legs to cover the accident location with the main body; start the first driving device to drive the nozzle to move up and down, pushing the suction cylinder on one side to swing; start the driving mechanism to drive the suction cylinder on the other side to swing;

[0024] The suction + blowing mode includes:

[0025] Filtering steps: start the blowing device and the suction device; the suction space forms an adsorption force; the blowing device starts to spray air at intervals toward the accident location; the hazardous gas is filtered through the first filter cartridge and the second filter cartridge in turn;

[0026] Inhalation modes include:

[0027] Filtration steps: start the suction device; the suction space forms adsorption force; the harmful gas is filtered through the first filter cartridge and the second filter cartridge in sequence;

[0028] Daily patterns include:

[0029] Filtration steps: start the suction device; the suction space forms adsorption force; the gas is filtered through the second filter cartridge.

[0030] Compared with the prior art, the beneficial technical effects of the present invention are as follows: (1) the portable filter is placed above the accident location, and the suction cylinder forms a cylindrical suction area around the accident location, and the harmful gas is adsorbed after contacting the suction area; the nozzle sprays gas, and the gas contacts the harmful gas to disperse the harmful gas and diffuse it outward, and after diffusion, the harmful gas contacts the suction area and is adsorbed; spraying gas through the nozzle accelerates the adsorption time of the harmful gas;

[0031] The driving mechanism drives the suction cylinder to swing, and adjusts the direction and width of the suction end of the suction space; the suction cylinder swings outward at the same time, so that the direction of the suction end of the suction space expands outward; the suction cylinder swings inward at the same time, so that the direction of the suction end of the suction space contracts inward; when the suction cylinders move away from each other, the width of the suction end of the suction space increases; when the suction cylinders move closer to each other, the width of the suction end of the suction space decreases; thereby completing the range adjustment of the suction area, so that the suction area completely covers the accident location, and no harmful gas will leak from the suction area;

[0032] The hazardous gas has certain corrosiveness and high smoke concentration. If the second filter cartridge is directly filtered, the second filter cartridge will be corroded and blocked. At this time, the other end of the conveying channel is connected to the first filter cartridge. The hazardous gas is first filtered through the first filter cartridge and then filtered through the second filter cartridge.

[0033] (2) When the nozzle needs to spray gas, the valve device is closed, and the blowing device generates gas and injects it into the naan portion, which gradually expands and fills the space in the block portion; at this time, the valve device is opened, and gas is sprayed from the head portion, and the gas in the naan portion gradually decreases, and the naan portion shrinks; the valve device performs reciprocating opening and closing actions, so that a large amount of gas is sprayed from the head portion at intervals; because the pressure is higher, the time is shorter, and the gas volume is larger when the head sprays gas, the gas sprayed from the head portion has a greater impact force on the harmful gas, thereby completing the dispersion and diffusion of the harmful gas.

[0034] (3) The arc plate of the suction cylinder on one side and the arc plate of the suction cylinder on the other side swing outward or inward at the same time, so as to adjust the direction of the suction space, thereby adjusting the diameter range of the suction area to deal with accidents at different locations; the arc plate of the suction cylinder on one side and the arc plate of the suction cylinder on the other side swing relative to or away from each other at the same time, so as to adjust the width of the suction space, thereby adjusting the width range of the suction area to deal with different amounts of hazardous gases at the accident location; thereby, the suction area can completely cover the accident location to avoid leakage of hazardous gases.

[0035] (4) The hazardous gas enters the upper end of a group of filter tubes in the first filter cartridge through the conveying channel, and the hazardous gas flows in the adjacent filter tubes in sequence; the atomizing device atomizes the clean water and sprays it out, which flows in the adjacent filter tubes in sequence and contacts the hazardous gas; as the atomization amount gradually increases, the atomized clean water mixes with the impurities in the hazardous gas to form sewage, which accumulates at the lower end of the filter tube; the filtered hazardous gas is discharged from the upper end of another group of filter tubes in the first filter cartridge; the sewage accumulation at the lower end of the filter tube increases to a certain extent, the first opening and closing valve closes, and the filtered hazardous gas cannot be discharged, so that the pressure in the filter tube gradually increases, the pressure pushes the spring sheet open, and the sewage is discharged into the second water storage cylinder; the pressure in the filter tube gradually decreases, and the spring sheet is elastically reset; the first opening and closing valve opens, and the filtered hazardous gas is discharged again;

[0036] Since the first filter tube is inclined, when the hazardous gas and clean water are atomized and flow along the filter tube, they contact the inner surface of the filter tube, which slows down the flow speed; the contact time between the hazardous gas and the clean water after atomization is extended, and the hazardous gas and the clean water after atomization are fully contacted and mixed; the clean water after atomization contacts the inner surface of the filter tube for many times, which increases the humidity in the filter tube and forms water droplets on the inner surface of the filter tube. The hazardous gas contacts the inner surface of the filter tube for many times, and the impurities in the hazardous gas are adsorbed by the water droplets on the inner surface of the filter tube.

[0037] (5) A notch is formed on the guide plate, and the notch connects adjacent guide plates; when the filtered hazardous gas flows along between the guide plates, the filtered hazardous gas can flow between different guide plates through the notch, thereby increasing the flow path of the filtered hazardous gas, extending the contact time between the filtered hazardous gas and the guide plate, and improving the adsorption effect of the guide plate on the moisture in the filtered hazardous gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A front structural diagram of a portable filter according to a first embodiment of the present invention is shown.

[0039] Figure 2 The front view structural diagram of the nozzle position of the first embodiment of the present invention is shown.

[0040] Figure 3 The front structural diagram of the mounting bracket position of the first embodiment of the present invention is shown.

[0041] Figure 4 A side structural diagram showing the position of the air suction cylinder of the first embodiment of the present invention.

[0042] Figure 5 The front view of the first filter cartridge position in the first embodiment of the present invention is shown.

[0043] Figure 6 A top view structural diagram showing the positions of the first filter cartridge and the second filter cartridge of the first embodiment of the present invention is shown.

[0044] Markings in the accompanying drawings: 1. main body; 11. blowing device; 12. suction device; 121. impeller; 122. third driving device; 13. mounting bracket; 14. first driving device; 15. ring cylinder; 17. supporting foot; 2. nozzle; 21. block part; 22. naan part; 23. head; 24. valve device; 3. suction cylinder; 31. suction space; 32. elastic device; 33. arc plate; 4. driving mechanism; 5. conveying channel; 6. first filter cartridge; 61. first water storage cartridge; 611. atomizing device; 62. second water storage cartridge; 63. filter tube; 631. spring; 632. first opening and closing valve; 7. second filter cartridge; 71. guide plate; 711. notch. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the present invention clearer, the device proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0046] First embodiment:

[0047] Figure 1 A front structural diagram of a portable filter according to a first embodiment of the present invention is shown. Figure 2 The front view structural diagram of the nozzle position of the first embodiment of the present invention is shown. Figure 3 The front structural diagram of the mounting bracket position of the first embodiment of the present invention is shown. Figure 4 A side structural diagram showing the position of the air suction cylinder of the first embodiment of the present invention. Figure 5 The front view of the first filter cartridge position in the first embodiment of the present invention is shown. Figure 6 The top view of the first filter cartridge and the second filter cartridge of the first embodiment of the present invention is shown. Figure 1-Figure 6 As shown, the present invention discloses a portable filter.

[0048] The portable filter includes: a main body 1, a nozzle 2 for ejecting gas, an air suction cylinder 3 swinging around the nozzle 2, a driving mechanism 4 arranged in the main body 1, a conveying channel 5 arranged in the main body 1, a first filter cartridge 6 obliquely arranged in the main body 1, and a second filter cartridge 7 arranged in the main body 1 around the first filter cartridge 6.

[0049] An air suction space 31 is formed between adjacent air suction cylinders 3, and the air suction space 31 adsorbs gas. One end of the delivery channel 5 is connected to the air suction space 31. The other end of the delivery channel 5 is connected to the first filter cylinder 6, and the other end of the delivery channel 5 is also connected between the first filter cylinder 6 and the second filter cylinder 7.

[0050] The lower end of the main body 1 is swingably provided with a support foot 17. The support foot 17 is swung downward, and the support foot 17 is unfolded to lift the main body 1 by a certain distance, so that the suction cylinder 3 is at a certain distance from the ground, so that a cylindrical suction area is formed around the nozzle 2. The support foot 17 is swung upward, and the support foot 17 is folded, so that it is convenient to take the mobile portable filter.

[0051] When an accident occurs in the laboratory, harmful gases are generated. The support legs 17 are unfolded, and the portable filter is placed above the accident location. The suction cylinder 3 forms a cylindrical suction area around the accident location, and the harmful gases are adsorbed after contacting the suction area. The nozzle 2 sprays gas downward, and the gas contacts the harmful gases to disperse the harmful gases and diffuse them outward. After diffusion, the harmful gases contact the suction area and are adsorbed. Spraying gas through the nozzle 2 accelerates the adsorption time of the harmful gases.

[0052] The driving mechanism 4 drives the suction cylinder 3 to swing, and adjusts the direction and width of the suction end of the suction space 31. The suction cylinder 3 swings outward at the same time, so that the direction of the suction end of the suction space 31 expands outward. The suction cylinder 3 swings inward at the same time, so that the direction of the suction end of the suction space 31 contracts inward. When the suction cylinders 3 move away from each other, the width of the suction end of the suction space 31 increases. When the suction cylinders 3 move closer to each other, the width of the suction end of the suction space 31 decreases. Thereby, the range adjustment of the suction area is completed, so that the suction area completely covers the accident location, and no harmful gas leaks from the suction area.

[0053] The harmful gas has certain corrosiveness and high smoke concentration. If the second filter cartridge 7 is directly filtered, the second filter cartridge 7 will be corroded and blocked. At this time, the other end of the conveying channel 5 is connected to the first filter cartridge 6. The harmful gas is first filtered by the first filter cartridge 6 and then filtered by the second filter cartridge 7. Exemplarily, the first filter cartridge 6 is made of stainless steel, which improves the corrosion resistance of the first filter cartridge 6. The first filter cartridge 6 is a pipeline structure and will not be blocked.

[0054] The portable filter can also filter the daily air in the laboratory without harmful gases, and the filtered gas does not corrode or clog. At this time, the other end of the conveying channel 5 is connected between the first filter cartridge 6 and the second filter cartridge 7. The air is filtered through the second filter cartridge 7.

[0055] The portable filter further comprises: a blowing device 11 and an air suction device 12. The blowing end of the blowing device 11 is connected to the nozzle 2. The air suction end of the air suction device 12 is connected to the air suction space 31.

[0056] The nozzle 2 includes a block 21, a naan portion 22 disposed in the block 21, a head portion 23 connected to the naan portion 22, and a valve device 24 for opening and closing the head portion 23. The naan portion 22 is connected to the blowing end of the blowing device 11. The valve device 24 is disposed between the naan portion 22 and the head portion 23.

[0057] Exemplarily, the blowing device 11 is an air pump. The suction device 12 includes an impeller 121 arranged around the second filter cartridge 7 and a third driving device 122 driving the impeller 121 to rotate. A gear is arranged at the driving end of the third driving device 122, and the gear meshes with a rack on the impeller 121. The third driving device 122 drives the impeller 121 to rotate, thereby generating an adsorbed airflow. A space is formed in the block portion 21, and the naan portion 22 is placed in the space.

[0058] When the nozzle 2 needs to spray gas, the valve device 24 is closed, and the blowing device 11 generates gas and injects it into the naan portion 22, which gradually expands to fill the space of the block portion 21. At this time, the valve device 24 is opened, the head 23 sprays gas, the gas in the naan portion 22 gradually decreases, and the naan portion 22 shrinks. The valve device 24 performs the opening and closing action reciprocatingly, so that the head 23 sprays a large amount of gas at intervals. Since the head 23 sprays gas with a high pressure, a short time, and a large amount of gas, the gas sprayed from the head 23 has a greater impact force on the harmful gas, thereby completing the dispersion and diffusion of the harmful gas.

[0059] A mounting bracket 13 is provided at the lower end of the main body 1, and the mounting bracket 13 is provided with a first driving device 14 and an annular tube 15. The first driving device 14 drives the nozzle 2 to move. The annular tube 15 is provided around the nozzle 2. The suction end of the suction device 12 is connected to the suction space 31 through the annular tube 15. The suction tube 3 is swingably connected to the mounting bracket 13.

[0060] Exemplarily, the first driving device 14 is a motor. A gear is provided at the driving end of the first driving device 14. The block portion 21 is provided with a tooth profile in the up and down directions. The gears mesh with the tooth profiles, and the first driving device 14 drives the gear to rotate and drive the block portion 21 to move up and down. The annular cylinder 15 is connected to the suction end of the suction device 12 and the upper end of the suction space 31 respectively.

[0061] The suction cylinder 3 includes an arc plate 33 that is swingably connected to the mounting bracket 13 around the nozzle 2. Adjacent arc plates 33 are stacked in sequence to form a cylinder around the nozzle 2. Exemplarily, the suction cylinder 3 is in two groups.

[0062] An elastic device 32 is provided at the swinging position of the arc plate 33 of the air suction cylinder 3 on one side. The elastic device 32 pushes the arc plate 33 of the air suction cylinder 3 on one side close to the nozzle 2. Exemplarily, the elastic device 32 is a spring. The arc plate 33 of the air suction cylinder 3 on one side is the arc plate 33 close to the inner side of the air suction space 31. The block portion 21 contacts the arc plate 33 of the air suction cylinder 3 on one side. The arc plate 33 of the air suction cylinder 3 on one side is formed with an inclined surface, and the block portion 21 is formed with an extended contact inclined surface, which facilitates the block portion 21 to push the arc plate 33 of the air suction cylinder 3 on one side to swing. At the same time, the extension of the block portion 21 covers the lower end of the main body 1 to prevent harmful gases from flowing into the main body 1.

[0063] When the block 21 moves downward, the elastic device 32 pushes the arc plate 33 of the suction cylinder 3 on one side to swing inward. When the block 21 moves upward, the block 21 pushes the arc plate 33 of the suction cylinder 3 on one side to swing outward.

[0064] The driving mechanism 4 is installed on the mounting bracket 13, and the driving mechanism 4 drives the arc plate 33 of the suction cylinder 3 on the other side to swing.

[0065] Exemplarily, the driving mechanism 4 is an electric cylinder. The arc plate 33 of the air suction cylinder 3 on the other side is extended, and the driving end of the driving mechanism 4 is connected to the extended position. The driving end of the driving mechanism 4 is telescopic to push the arc plate 33 of the air suction cylinder 3 on the other side to swing outward or inward.

[0066] The arc plate 33 of the air suction cylinder 3 on one side and the arc plate 33 of the air suction cylinder 3 on the other side swing outward or inward at the same time, which can adjust the direction of the air suction space 31, thereby adjusting the diameter range of the air suction area to deal with accidents in different positions and ranges. The arc plate 33 of the air suction cylinder 3 on one side and the arc plate 33 of the air suction cylinder 3 on the other side swing relative to or away from each other at the same time, which can adjust the width of the air suction space 31, thereby adjusting the width range of the air suction area to deal with different amounts of hazardous gases at the accident location. In this way, the accident location is completely covered by the air suction area to avoid leakage of hazardous gases.

[0067] The first filter cartridge 6 includes a plurality of filter tubes 63, and adjacent filter tubes 63 are interconnected. The upper end of one group of filter tubes 63 in the first filter cartridge 6 is an inlet for harmful gases. The upper end of another group of filter tubes 63 in the first filter cartridge 6 is an outlet for harmful gases after the first filtration. A first opening and closing valve 632 is provided at the upper end of another group of filter tubes 63 in the first filter cartridge 6 to control the opening and closing of the outlet for harmful gases after the first filtration. When the first opening and closing valve 632 is opened, the harmful gases after filtration are discharged. When the first opening and closing valve 632 is closed, the pressure in the first filter cartridge 6 increases.

[0068] The lower ends of the filter tubes 63 in the first filter cartridge 6 are sewage outlets, and are all provided with spring plates 631. The spring plates 631 close the lower ends of the filter tubes 63. When the pressure in the filter tubes 63 is too high, the pressure pushes the spring plates 631 to open the lower ends of the filter tubes 63.

[0069] The first filter cartridge 6 is provided with a first water storage cartridge 61 for storing clean water and a second water storage cartridge 62 for storing dirty water. The first water storage cartridge 61 is connected to the upper end of the filter tube 63; the second water storage cartridge 62 is connected to the lower end of the filter tube 63.

[0070] The first filter cartridge 6 is located near the outlet of the harmful gas after the first filtration, and is the inlet of the atomized clean water. The outlet of the first water storage cartridge 61 is provided with an atomizing device 611. The atomizing nozzle of the atomizing device 611 is placed on the inlet of the first filter cartridge 6 after the atomized clean water.

[0071] The harmful gas enters the upper end of a group of filter tubes 63 in the first filter cartridge 6 through the conveying channel 5, and the harmful gas flows in the adjacent filter tubes 63 in sequence. The atomizing device 611 sprays the clean water after atomization, flows in the adjacent filter tubes 63 in sequence, and contacts the harmful gas. As the atomization amount gradually increases, the atomized clean water mixes with the impurities in the harmful gas to form sewage, which accumulates at the lower end of the filter tube 63. The filtered harmful gas is discharged from the upper end of another group of filter tubes 63 in the first filter cartridge 6. When the sewage accumulation at the lower end of the filter tube 63 increases to a certain extent, the first opening and closing valve 632 is closed, and the filtered harmful gas cannot be discharged, so that the pressure in the filter tube 63 gradually increases, and the pressure pushes the spring 631 open, and the sewage is discharged into the second water storage cylinder 62. The pressure in the filter tube 63 gradually decreases, and the spring 631 is elastically reset. The first opening and closing valve 632 is opened, and the filtered harmful gas is discharged again.

[0072] Since the first filter cartridge 6 is tilted, the hazardous gas and clean water contact the inner surface of the filter tube 63 when flowing along the filter tube 63 after being atomized, slowing down the flow speed. The contact time between the hazardous gas and the clean water after being atomized is prolonged, and the hazardous gas and the clean water after being atomized are fully contacted and mixed. The clean water contacts the inner surface of the filter tube 63 for many times after being atomized, increasing the humidity in the filter tube 63, forming water droplets on the inner surface of the filter tube 63, and the hazardous gas contacts the inner surface of the filter tube 63 for many times, and the impurities in the hazardous gas are adsorbed by the water droplets on the inner surface of the filter tube 63.

[0073] A guide plate 71 is provided between the first filter cartridge 6 and the second filter cartridge 7. The guide plate 71 extends around the first filter cartridge 6 to form a spiral arc.

[0074] Exemplarily, the guide plate 71 is made of microporous ceramic material. After the filtered hazardous gas is discharged from the first filter cartridge 6, it flows along the guide plates 71 to contact the second filter cartridge 7 to complete the second filtration, and then is discharged from the main body 1. Since the guide plate 71 is in an arc shape, when the filtered hazardous gas flows along the guide plates 71, the filtered hazardous gas contacts the guide plate 71, and the guide plate 71 absorbs the moisture in the filtered hazardous gas to prevent the moisture in the filtered hazardous gas from affecting the filtering effect of the second filter cartridge 7.

[0075] A notch 711 is formed on the guide plate 71, and the notch 711 communicates between adjacent guide plates 71. When the filtered hazardous gas flows along between the guide plates 71, the filtered hazardous gas can flow between different guide plates 71 through the notch 711, thereby increasing the flow path of the filtered hazardous gas, prolonging the contact time between the filtered hazardous gas and the guide plate 71, and improving the adsorption effect of the guide plate 71 on the moisture in the filtered hazardous gas.

[0076] Smoke sensors are installed on the outer side and the inner side of the air suction cylinder 3 on the main body 1, and the smoke sensors detect the smoke concentration outside the air suction cylinder 3 and the smoke concentration inside the air suction cylinder 3 respectively.

[0077] If the smoke sensor outside the air suction cylinder 3 detects an increase in smoke concentration, it means that the harmful gas is not completely adsorbed by the air suction space 31, and the harmful gas diffuses outward. At this time, the air suction cylinders 3 on both sides swing outward at the same time, expanding the direction of the air suction space 31 and the adsorption range, and the swing angle of the air suction cylinder 3 on one side is smaller than the swing angle of the air suction cylinder 3 on the other side, which expands the width of the air suction space 31 and the width of the adsorption range, thereby increasing the adsorption amount of harmful gases.

[0078] If the smoke concentration detected by the smoke sensor inside the air cylinder 3 is lower than the smoke concentration detected by the smoke sensor outside the air cylinder 3, it means that the harmful gas is not completely adsorbed by the air intake space 31, and the harmful gas diffuses outward. At the same time, the amount of gas sprayed by the nozzle 2 is large, and a large amount of harmful gas diffuses and contacts the air intake area, increasing the adsorption burden of the air intake space 31. At this time, after the gas is injected into the naan portion 22, the head 23 sprays out part of the gas, and the valve device 24 is closed for a period of time and then reopened, and the head 23 sprays out part of the gas again, and the cycle repeats. During this process, the blowing device 11 does not work. When the gas in the naan portion 22 is completely discharged, the blowing device 11 works again to inject gas into the naan portion 22. In this way, the effect of reducing the frequency of gas spraying from the nozzle 2 and reducing the amount of gas sprayed from the nozzle 2 is achieved. At this time, the air cylinders 3 on both sides swing outward at the same time, expanding the direction of the air suction space 31 and the adsorption range, and the swing angle of the air cylinder 3 on one side is smaller than the swing angle of the air cylinder 3 on the other side, expanding the width of the air suction space 31 and the width of the adsorption range, thereby increasing the adsorption amount of harmful gases.

[0079] If the smoke sensor on the inside of the air cylinder 3 detects an increase in smoke concentration, it means that the harmful gas accumulates at the location where the accident occurred and is not effectively adsorbed. Increasing the power of the blowing device 11 allows the naan portion 22 to be quickly filled with gas, thereby achieving the effect of increasing the frequency of gas injection from the nozzle 2. A large amount of harmful gas diffuses under high-frequency injection and is adsorbed by the air suction space 31, increasing the burden on the air suction space 31. If the smoke sensor on the outside of the air cylinder 3 does not detect the smoke concentration, the air cylinder 3 does not need to be adjusted. If the smoke sensor on the outside of the air cylinder 3 detects the smoke concentration, the air cylinders 3 on both sides swing outward at the same time, expanding the direction of the air suction space 31 and expanding the adsorption range, and the swing angle of the air cylinder 3 on one side is smaller than the swing angle of the air cylinder 3 on the other side, expanding the width of the air suction space 31 and the width of the adsorption range, thereby increasing the adsorption amount of harmful gases.

[0080] Second embodiment:

[0081] A filtration method of a portable filter comprises the following steps:

[0082] Steps for setting the mode: Set the suction mode or suction + blowing mode according to the environmental conditions of the accident location. Determine the suction volume of the suction cylinder 3 and the spray volume of the nozzle 2 according to the amount of hazardous gas at the accident location. If there is no accident location, set the daily mode. Determine the suction volume of the suction cylinder 3.

[0083] The setting mode steps are divided into a case where an accident location exists and a case where an accident location does not exist according to the usage situation.

[0084] In the case of an accident location, when the accident location is dust, set the suction mode, and no blowing is performed at this time. The portable filter forms an adsorption effect on the hazardous gas, but the dust is heavy, and the dust cannot be completely adsorbed after being blown up. Most of the dust is blown up and diffuses, polluting the environment in the laboratory. According to the amount of hazardous gas at the accident location, the greater the amount of hazardous gas, the greater the suction volume of the suction cylinder 3, and the jet volume of the nozzle 2 is 0. The smaller the amount of hazardous gas, the smaller the suction volume of the suction cylinder 3, and the jet volume of the nozzle 2 is 0.

[0085] In the case where there is an accident location and the accident location is not dusty, the suction + blowing mode is set, and blowing is performed at this time. A portable filter sprays air toward the accident location, and the harmful gas is adsorbed after diffusion, which speeds up the adsorption efficiency of the harmful gas. According to the amount of harmful gas at the accident location, the greater the amount of harmful gas, the greater the suction volume of the suction cylinder 3, and the greater the jet volume of the nozzle 2. The smaller the amount of harmful gas, the smaller the suction volume of the suction cylinder 3, and the smaller the jet volume of the nozzle 2.

[0086] Setting mode steps: When there is no accident location according to the usage, there is no large amount of concentrated hazardous gas, and the first filter cartridge 6 does not need to be used for filtering, and the second filter cartridge 7 can be used directly for filtering. The other end of the conveying channel 5 is connected to two locations: the inside of the first filter cartridge 6 and between the first filter cartridge 6 and the second filter cartridge 7. When the other end of the conveying channel 5 is connected to the inside of the first filter cartridge 6, it is applicable to the situation where there is an accident location. When the other end of the conveying channel 5 is connected between the first filter cartridge 6 and the second filter cartridge 7, it is applicable to the situation where there is no accident location.

[0087] Preparation step: Extend the support legs 17 to cover the accident location with the main body 1. The main body 1 is located higher than the accident location so that the portable filter can inhale and blow normally.

[0088] The first driving device 14 is started to drive the nozzle 2 to move up and down, pushing the suction cylinder 3 on one side to swing. The driving mechanism 4 is started to drive the suction cylinder 3 on the other side to swing.

[0089] The suction cylinders 3 on both sides swing to adjust the direction and position of the suction space 31, and the suction space 31 can fully cover the accident location. When the smoke sensor detects that the smoke concentration rises, the suction cylinders 3 on both sides swing to expand the direction and width of the suction space 31, thereby expanding the adsorption range and the width of the adsorption range, thereby avoiding the leakage of harmful gases.

[0090] The suction + blowing mode includes:

[0091] Filtering step: Start the blowing device 11 and the suction device 12. The suction space 31 forms an adsorption force. The blowing device 11 starts to spray air at intervals toward the accident location. The hazardous gas is filtered through the first filter cartridge 6 and the second filter cartridge 7 in sequence.

[0092] The nozzle 2 sprays air from top to bottom at intervals toward the accident location. Under the action of the gas, the hazardous gas diffuses and contacts the adsorption area of ​​the suction space 31. The hazardous gas enters the first filter cartridge 6. The atomizing device 611 atomizes the clean water and sprays it into the first filter cartridge 6. The clean water adsorbs impurities in the hazardous gas after atomization and accumulates as sewage for recycling. After the hazardous gas is discharged, it flows along the guide plate 71. After the guide plate 71 adsorbs the water in the hazardous gas, the hazardous gas enters the second filter cartridge 7 and is discharged after filtration.

[0093] Inhalation modes include:

[0094] Filtering step: Start the suction device 12. The suction space 31 forms an adsorption force. The hazardous gas is filtered through the first filter cartridge 6 and the second filter cartridge 7 in sequence.

[0095] The harmful gas gradually diffuses and contacts the adsorption area of ​​the air intake space 31. The harmful gas enters the first filter cartridge 6. The atomizing device 611 atomizes the clean water and sprays it into the first filter cartridge 6. The clean water atomizes and adsorbs impurities in the harmful gas and accumulates as sewage for recycling. After the harmful gas is discharged, it flows along the guide plate 71. After the guide plate 71 adsorbs the water in the harmful gas, the harmful gas enters the second filter cartridge 7 and is discharged after filtration.

[0096] Daily patterns include:

[0097] Filtering steps: start the suction device 12; the suction space 31 forms an adsorption force; the gas is filtered through the second filter cartridge 7.

[0098] The adsorption area of ​​the air intake space 31 adsorbs the nearby gas, and the gas enters between the first filter cartridge 6 and the second filter cartridge 7 and flows along the guide plate 71. After the guide plate 71 adsorbs the moisture in the gas, the gas enters the second filter cartridge 7 and is discharged after filtration is completed.

[0099] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A portable filter, characterized in that: include: Subject (1); A nozzle (2) for ejecting gas; An air suction cylinder (3) is swingably arranged around the nozzle (2); A driving mechanism (4) is arranged in the main body (1); A conveying channel (5) is arranged in the main body (1); A first filter cartridge (6) arranged obliquely in the main body (1); a second filter cartridge (7) arranged around the first filter cartridge (6) and inside the main body (1); Wherein, an air suction space (31) is formed between adjacent air suction cylinders (3), and the air suction space (31) adsorbs gas; the driving mechanism (4) drives the air suction cylinder (3) to swing, and adjusts the direction and width of the air suction end of the air suction space (31); one end of the conveying channel (5) is connected to the air suction space (31); the other end of the conveying channel (5) is connected to the first filter cylinder (6), and the other end of the conveying channel (5) is also connected between the first filter cylinder (6) and the second filter cylinder (7); the lower end of the main body (1) is swingably provided with a supporting foot (17); The nozzle (2) comprises: a block portion (21), a naan portion (22) arranged in the block portion (21), a head portion (23) connected to the naan portion (22), and a valve device (24) for opening and closing the head portion (23); A mounting bracket (13) is provided at the lower end of the main body (1); the air suction cylinder (3) comprises an arc plate (33) connected to the mounting bracket (13) and swinging around the nozzle (2); adjacent arc plates (33) are stacked in sequence.

2. The portable filter according to claim 1, characterized in that Also includes: An air blowing device (11) and an air suction device (12); the air blowing end of the air blowing device (11) is connected to the nozzle (2); and the air suction end of the air suction device (12) is connected to the air suction space (31).

3. The portable filter according to claim 2, characterized in that The naan portion (22) is connected to the blowing end of the blowing device (11); and the valve device (24) is arranged between the naan portion (22) and the head portion (23).

4. The portable filter according to claim 2, characterized in that The mounting bracket (13) is mounted with a first driving device (14) and an annular cylinder (15); the first driving device (14) drives the nozzle (2) to move; the annular cylinder (15) is arranged around the nozzle (2); the suction end of the suction device (12) is connected to the suction space (31) through the annular cylinder (15); and the suction cylinder (3) is swingably connected to the mounting bracket (13).

5. The portable filter according to claim 4, characterized in that The drive mechanism (4) is mounted on the mounting bracket (13); an elastic device (32) is provided at the swinging position of the circular arc plate (33) of the air suction cylinder (3) on one side; the elastic device (32) pushes the circular arc plate (33) of the air suction cylinder (3) on one side to approach the nozzle (2); and the drive mechanism (4) drives the circular arc plate (33) of the air suction cylinder (3) on the other side to swing.

6. The portable filter according to claim 2, characterized in that The first filter cartridge (6) is provided with a first water storage cartridge (61) for storing clean water and a second water storage cartridge (62) for storing dirty water; the first filter cartridge (6) comprises a plurality of filter tubes (63); adjacent filter tubes (63) are connected to each other; the first water storage cartridge (61) is connected to the upper ends of the filter tubes (63); and the second water storage cartridge (62) is connected to the lower ends of the filter tubes (63).

7. The portable filter according to claim 2, characterized in that A guide plate (71) is provided between the first filter cartridge (6) and the second filter cartridge (7), and the guide plate (71) extends around the first filter cartridge (6) to form a spiral arc.

8. The portable filter according to claim 2, characterized in that Smoke sensors are installed on the outside of the air suction cylinder (3) and the inside of the air suction cylinder (3) on the main body (1), and the smoke sensors detect the smoke concentration outside the air suction cylinder (3) and the smoke concentration inside the air suction cylinder (3) respectively.

9. A filtration method of a portable filter, using the portable filter as claimed in claim 4, characterized in that: The steps include: Mode setting steps: setting the suction mode or the suction + blowing mode according to the environmental conditions of the accident location; determining the suction volume of the suction cylinder (3) and the air discharge volume of the nozzle (2) according to the amount of harmful gas at the accident location; setting the daily mode if there is no accident location; determining the suction volume of the suction cylinder (3); Preparation steps: extending the support foot (17) to cover the accident location with the main body (1); starting the first driving device (14) to drive the nozzle (2) to move up and down, pushing the suction cylinder (3) on one side to swing; starting the driving mechanism (4) to drive the suction cylinder (3) on the other side to swing; The suction + blowing mode includes: Filtering steps: starting the blowing device (11) and the suction device (12); the suction space (31) forms an adsorption force; the blowing device (11) starts to spray air at intervals toward the accident location; the hazardous gas is filtered through the first filter cartridge (6) and the second filter cartridge (7) in sequence; Inhalation modes include: Filtering steps: starting the air suction device (12); forming an adsorption force in the air suction space (31); filtering the harmful gas through the first filter cartridge (6) and the second filter cartridge (7) in sequence; Daily patterns include: Filtering steps: starting the air suction device (12); forming an adsorption force in the air suction space (31); and filtering the gas through the second filter cartridge (7).

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