Two-way air filter

Abstract

The present invention discloses a two-way circulation air filter, which relates to the field of air filters, including a double mechanism, a steering mechanism and a control mechanism, wherein the steering mechanism includes two inlet and outlet air pipes, two connecting pipes, two upper steering valves, two lower steering valves and a second regulating assembly, wherein one end of the two inlet and outlet air pipes are respectively connected to the middle of the upper connecting pipe through two upper steering valves, one end of the two connecting pipes are respectively connected to the middle of the two inlet and outlet air pipes, and the other end of the two connecting pipes are respectively connected to the middle of the lower connecting pipe through two lower steering valves, and the second regulating assembly can synchronously adjust the valve plates of the two upper steering valves and the valve plates of the two lower steering valves to rotate 90°. The present invention is arranged through the above structure, so that the device can filter the air circulating in two directions, and when the air filtering direction needs to be changed, it does not need to be disassembled again, which is convenient to use.

Description

Technical Field

[0001] The invention relates to the field of air filters, in particular to a two-way circulation air filter. Background Art

[0002] Air filter is a device that captures dust from gas-solid two-phase flow and purifies the gas through the action of porous filter materials. It purifies the low-dust air and sends it into the room to ensure the process requirements of the clean room and the air cleanliness in the general air-conditioned room. Generally, there are five types of filters: primary filter, medium filter, high-medium filter, sub-high efficiency filter and high efficiency filter.

[0003] The existing air filters can generally only filter the air in one direction. When the demand for filtering direction changes, the direction of air filtering cannot be adjusted according to the situation. The original equipment needs to be dismantled and then reinstalled. The process is cumbersome and inconvenient to use. At the same time, after a period of use, the filter element of the filter affects the filtering effect due to the attachment of a large amount of impurities. At this time, the filter needs to be cleaned to maintain the filtering effect, that is, the filter needs to be replaced or cleaned. However, when replacing the filter, the filtering device needs to be turned off, that is, the machine needs to be shut down for cleaning, and the air cannot be filtered any more, causing inconvenience in use.

[0004] The Chinese patent with publication number CN206837633U discloses a double switchable filter for a cleaning machine, including a first filter, a second filter, a first left pipe, a first right pipe, a second left pipe, a second right pipe, a first three-way valve, and a second three-way valve; the first filter includes a first cylinder with an upper opening and a hollow structure, a first filter element arranged in the cavity of the first cylinder, a first bracket arranged at the bottom of the first cylinder for supporting the first cylinder, a first cylinder cover for covering the opening of the first cylinder and for sealing, a first oil inlet arranged at the lower end of one side of the first cylinder, and a first oil outlet located above the first oil inlet and arranged on the first cylinder; the first oil inlet is connected to the first left pipe, and the first oil outlet is connected to the second left pipe. The filter has a large filtering area, a large filtering amount, is easy to use, can be switched, and has good practicality.

[0005] The Chinese patent with publication number CN213743772U discloses a filter device for replacing filter elements without stopping the machine, comprising: a total oil inlet, a total oil outlet, a double reversing valve, and a first filter and a second filter connected in parallel, the double reversing valve comprising a first reversing valve and a second reversing valve, the second oil outlet of the first filter is connected to the second oil outlet oil passage of the first filter, and the second oil outlet oil passage of the first filter is provided with a first switch valve; the second oil inlet of the second filter is connected to the second oil inlet oil passage of the second filter, the second oil outlet of the second filter is connected to the second oil outlet oil passage of the second filter, and the second oil outlet oil passage of the second filter is provided with a second switch valve; the second oil inlet oil passage of the first filter and the second oil inlet oil passage of the second filter are respectively connected to the exhaust oil passage, the exhaust oil passage is connected to the total oil inlet, and the exhaust oil passage is provided with a third switch valve and an oil pump. Not only does it realize the replacement of the filter element without stopping the machine, but it also empties the air in the pipeline and the new filter element, the filter element has high working efficiency, the engine will not stall, and the engine can work stably.

[0006] The above prior art also has the following problems:

[0007] (1) When the filter element needs to be replaced, the valve needs to be adjusted multiple times, which is prone to errors, causing the two filter elements to work at the same time and unable to be replaced synchronously;

[0008] (2) The filter element cannot be automatically switched when it needs to be cleaned or replaced, resulting in poor purification effect and a bad user experience;

[0009] (3) When the demand for filtration direction changes, the direction of air filtration cannot be adjusted according to the situation.

[0010] Therefore, the present application provides a two-way flow air filter to meet the needs. Summary of the invention

[0011] The purpose of the present application is to provide a two-way circulation air filter, by setting a double mechanism, the two intake pipes are connected with the two ends of the upper connecting pipe respectively through the two upper double valves, and the two outlet pipes are connected with the two ends of the lower connecting pipe respectively through the two lower double valves, the first regulating component can synchronously adjust the valve plates of the two upper double valves and the valve plates of the two lower double valves to rotate 90°, when working, the upper double valve and the lower double valve on one side are controlled to open, and the upper double valve and the lower double valve on the other side are closed, air is taken in from the middle of the upper connecting pipe, the air flows to one of the air filter bodies, and the air is discharged from the middle of the lower connecting pipe after filtering, when the control mechanism detects that the filter element needs to be replaced, the control mechanism switches the switches of the upper double valves and the lower double valves on both sides, and uses the other air filter body to perform air filtering, so that the filter element can be replaced without stopping the machine, so as to avoid affecting the air filtration efficiency.

[0012] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a two-way circulation air filter, comprising two air filter bodies, the air filter bodies are provided with an air inlet pipe and an air outlet pipe, characterized in that: it also includes a double-link mechanism, a steering mechanism and a control mechanism, the air inlet pipe and the air outlet pipe are provided with an air quality monitoring sensor, the air quality monitoring sensor is connected to the control mechanism, the double-link mechanism comprises an upper connecting pipe, a lower connecting pipe, two upper double-link valves, two lower double-link valves and a first regulating component, the two air inlet pipes are respectively connected to the two ends of the upper connecting pipe through the two upper double-link valves, the two air outlet pipes are respectively connected to the two ends of the lower connecting pipe through the two lower double-link valves, and the first regulating component can synchronously adjust the valve plates of the two upper double-link valves and the valve plates of the two lower double-link valves to rotate 90°;

[0013] The steering mechanism comprises two air inlet and outlet pipes, two connecting pipes, two upper steering valves, two lower steering valves and a second regulating assembly, one end of the two air inlet and outlet pipes are respectively connected to the middle of the upper connecting pipe through the two upper steering valves, one end of the two connecting pipes are respectively connected to the middle of the two air inlet and outlet pipes, and the other end of the two connecting pipes are respectively connected to the middle of the lower connecting pipe through the two lower steering valves, and the second regulating assembly can synchronously adjust the valve plates of the two upper steering valves and the valve plates of the two lower steering valves to rotate 90°;

[0014] The control mechanism is arranged at the top of the first regulating component and the second regulating component, and collects data through the air quality monitoring sensor to calculate the filter change index H. If the filter change index H=1, the control mechanism controls the first regulating component regulating valve plate to rotate and issues a filter element replacement alarm. The filter change index H is calculated according to the following formula:

[0015]

[0016] Among them, Q out and Q in are the air quality monitoring values ​​at the outlet and inlet respectively, [Q] is the allowable difference in air quality, T is the usage time of the air filter body, and [T] is the allowable value of the time.

[0017] Preferably, the valve plates of the two upper double valves are arranged vertically, the valve plates of the two lower double valves are arranged vertically, and the valve plates of each upper double valve are arranged at the same angle as the valve plates of the lower double valves on the same side.

[0018] Preferably, the valve plates of the two upper steering valves are vertically arranged, the valve plates of the two lower steering valves are vertically arranged, and the valve plate of each upper steering valve is vertically arranged with the valve plate of the lower steering valve on the same side.

[0019] Preferably, the second adjusting assembly includes a cylinder, a driving gear, two driven gears, two first pulleys, two belts and two second pulleys, the cylinder is fixedly mounted on the outer wall of the upper connecting tube, the driving gear and the two driven gears are mounted on the top of the cylinder through a rotating shaft, the two driven gears are meshed with the driving gear, the two first pulleys are fixedly connected to the two driven gears respectively, a steering connecting rod is fixedly mounted between the valve plate of each upper steering valve and the valve plate of the lower steering valve on the same side, the two second pulleys are fixedly connected to the two steering connecting rods respectively, and each belt is respectively sleeved between the corresponding first pulley and the second pulley.

[0020] Preferably, the second adjustment component also includes a ring, a disc and a rotating knob, the ring is fixedly mounted on the top of the cylinder, the disc is arranged in the ring, and the disc is fixedly connected to the rotating shaft of the driving gear, the rotating knob is fixedly mounted on the top of the disc, a sliding cavity is provided in the disc, a sliding block is slidably installed in the sliding cavity, one end of the sliding cavity is connected to the outside, a locking head is fixedly mounted on the outward side of the sliding block, a spring is provided on the inward side of the sliding block, two locking grooves are provided on the inner wall of the ring, and the line connecting the two locking grooves and the axis of the disc is 90°.

[0021] Preferably, the engaging head and the engaging groove are both hemispherical, and the engaging head and the engaging groove have the same size.

[0022] Preferably, the structure of the first adjusting component is the same as that of the second adjusting component, the cylinder on the first adjusting component is fixedly mounted on the outer wall of the lower connecting pipe, a double connecting rod is fixedly mounted between the valve plate of each upper double valve and the valve plate of the lower double valve on the same side, and the two second pulleys on the first adjusting component are fixedly connected to the two double connecting rods respectively.

[0023] Preferably, the air filter body also includes a top cover, an outer shell and a filter element, the air inlet pipe is fixedly installed on the outer wall of the top cover and is connected to the air inlet pipe, the air outlet pipe is fixedly installed on the outer wall of the outer shell and is connected to the air outlet pipe, the filter element is fixedly installed on the top inside the outer shell, and the top cover is connected to the outer shell by a flange.

[0024] A one-way air valve is fixedly installed on the top of the connecting pipe, and the flow direction of the one-way air valve is toward the inlet and outlet air pipelines.

[0025] In summary, the technical effects and advantages of the present invention are as follows:

[0026] 1. In the present invention, a double-link mechanism is provided, and the two air inlet pipes are connected to the two ends of the upper connecting pipe through the two upper double-link valves, and the two air outlet pipes are connected to the two ends of the lower connecting pipe through the two lower double-link valves. The first regulating component can synchronously adjust the valve plates of the two upper double-link valves and the valve plates of the two lower double-link valves to rotate 90 degrees. When working, the upper double-link valve and the lower double-link valve on one side are controlled to be opened, and the upper double-link valve and the lower double-link valve on the other side are controlled to be closed. Air is taken in from the middle of the upper connecting pipe, and the air flows to one of the air filter bodies. After filtering, the air is discharged from the middle of the lower connecting pipe. When the filter element in operation needs to be replaced, the switches of the upper double-link valves and the lower double-link valves on both sides are switched, and the air filtering work is performed by using the other air filter body. The filter element is replaced without stopping the machine to avoid affecting the air filtration efficiency.

[0027] 2. In the present invention, by setting up a control mechanism, the filter element can be replaced and monitored in time. When replacement is needed, the filter element is automatically switched and an alarm that the filter element needs to be replaced is issued. The purification quality of the air filter is guaranteed by timely switching the filter element.

[0028] 3. In the present invention, by setting a steering mechanism, one end of the two inlet and outlet air pipes is connected to the middle part of the upper connecting pipe through the two upper steering valves, one end of the two connecting pipes is connected to the middle part of the two inlet and outlet air pipes, and the other end of the two connecting pipes is connected to the middle part of the lower connecting pipe through the two lower steering valves. The second regulating component can synchronously adjust the valve plates of the two upper steering valves and the valve plates of the two lower steering valves to rotate 90 degrees, open the upper steering valve on one side, close the lower steering valve on the same side, and close the upper steering valve on the other side at the same time, and open the lower steering valve on the same side. Air flows into the air filter body from the inlet and outlet air pipes on one side, and flows out from the inlet and outlet air pipes on the other side after filtering. When it is necessary to switch the air flow direction, the upper steering valve and the lower steering valve are switched by the second regulating component, and the air flows into the air filter body from the inlet and outlet air pipes on the other side, and flows out from the inlet and outlet air pipes on one side after filtering, so that the device can filter the air in two-way circulation. When it is necessary to change the air filtering direction, there is no need to disassemble and reassemble, which is convenient for use.

[0029] 4. In the present invention, by setting the first adjustment component and the second adjustment component, the driving gear and the two driven gears are installed on the top of the cylinder through the rotating shaft, the two first pulleys are fixedly connected to the two driven gears respectively, and each belt is respectively sleeved between the corresponding first pulley and the second pulley. The second pulley is fixedly connected to the double connecting rod or the steering connecting rod. By rotating the driving gear, multiple valve plates can be driven to rotate synchronously, which is convenient for switching the working air filter body and adjusting the air filtration direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the double-link mechanism of the present invention;

[0033] Figure 3 It is a schematic diagram of the cutaway structure of the double-link mechanism of the present invention;

[0034] Figure 4 It is a structural schematic diagram of the steering mechanism of the present invention;

[0035] Figure 5 It is a schematic diagram of the cross-section structure of the steering mechanism of the present invention;

[0036] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0037] Figure 7 It is a schematic diagram of the cross-sectional structure of the disc of the present invention;

[0038] Figure 8 It is a schematic diagram of the cross-section structure of the air filter body of the present invention.

[0039] In the figure: 1. air filter body; 101. air inlet pipe; 102. air outlet pipe; 103. top cover; 104. shell; 105. filter element; 2. double mechanism; 202. upper connecting pipe; 201. lower connecting pipe; 204. upper double valve; 203. lower double valve; 205. double connecting rod; 208. first regulating assembly; 3. steering mechanism; 301. air inlet and outlet pipes; 302. connecting pipe; 303. upper steering valve; 304 , lower steering valve; 305, steering connecting rod; 306, second adjusting assembly; 3061, cylinder; 3062, driving gear; 3063, driven gear; 3064, first pulley; 3065, belt; 3066, second pulley; 3067, ring; 3068, disk; 3069, rotating knob; 3070, engaging groove; 3071, sliding block; 3072, engaging head; 3073, spring; 308, one-way air valve. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] 2. Example: Reference Figure 1-Figure 5 A two-way air filter is shown, comprising two air filter bodies (1), wherein the air filter bodies (1) are provided with an air inlet pipe (101) and an air outlet pipe (102), and characterized in that: it also comprises a double-link mechanism (2), a steering mechanism (3) and a control mechanism, wherein the air inlet pipe (101) and the air outlet pipe (102) are provided with air quality monitoring sensors, wherein the air quality monitoring sensors are connected to the control mechanism, and the double-link mechanism (2) comprises an upper connecting pipe (202), a lower connecting pipe (201), two An upper double valve (204), two lower double valves (203) and a first regulating component (208), wherein the two air inlet pipes (101) are respectively connected to the two ends of the upper connecting pipe (202) through the two upper double valves (204), and the two air outlet pipes (102) are respectively connected to the two ends of the lower connecting pipe (201) through the two lower double valves (203), and the first regulating component (208) can synchronously regulate the valve plates of the two upper double valves (204) and the valve plates of the two lower double valves (203) to rotate 90 degrees;

[0042] The steering mechanism (3) comprises two air inlet and outlet pipes (301), two connecting pipes (302), two upper steering valves (303), two lower steering valves (304) and a second regulating component (306); one end of the two air inlet and outlet pipes (301) is respectively connected to the middle of the upper connecting pipe (202) through the two upper steering valves (303); one end of the two connecting pipes (302) is respectively connected to the middle of the two air inlet and outlet pipes (301); the other end of the two connecting pipes (302) is respectively connected to the middle of the lower connecting pipe (201) through the two lower steering valves (304); the second regulating component (306) can synchronously regulate the valve plates of the two upper steering valves (303) and the valve plates of the two lower steering valves (304) to rotate 90°;

[0043] The control mechanism is arranged at the top of the first regulating component (208) and the second regulating component (306), and collects data through the air quality monitoring sensor to calculate the filter replacement index H. If the filter replacement index H=1, the control mechanism controls the first regulating component (208) to rotate the regulating valve plate and issues a filter element replacement alarm. The filter replacement index H is calculated according to the following formula:

[0044]

[0045] Among them, Q out and Q in are the air quality monitoring values ​​at the air outlet and the air inlet respectively, [Q] is the permissible difference in air quality, T is the usage time of the air filter body (1), and [T] is the permissible value of the usage time.

[0046] When working, the upper double valve 203 and the lower double valve 203 on one side are controlled to be opened, and the upper double valve 203 and the lower double valve 203 on the other side are closed, and air is taken in from the middle of the upper connecting pipe 202, and the air flows to one of the air filter bodies 1, and is filtered and then discharged from the middle of the lower connecting pipe 201. When the control mechanism detects that the air filter body 1 needs to be repaired or the filter element needs to be replaced, the control mechanism controls the first adjustment component 208 to switch the upper double valve 203 and the lower double valve 203 on both sides, and the other air filter body 1 needs to be repaired or replaced. The air filter body 1 performs air filtering work, and the filter element can be replaced without stopping the machine to avoid affecting the air filtering efficiency; the steering mechanism 3 includes two inlet and outlet air pipes 301, two connecting pipes 302, two upper steering valves 303, two lower steering valves 304 and a second adjustment component 306, one end of the two inlet and outlet air pipes 301 is connected to the middle of the upper connecting pipe 202 through the two upper steering valves 303, one end of the two connecting pipes 302 is connected to the middle of the two inlet and outlet air pipes 301, and the two The other end of the connecting pipe 302 is connected to the middle part of the lower connecting pipe 201 through two lower turning valves 304. The second regulating component 306 can synchronously adjust the valve plates of the two upper turning valves 303 and the two lower turning valves 304 to rotate 90 degrees, open the upper turning valve 303 on one side, close the lower turning valve 304 on the same side, and close the upper turning valve 303 on the other side and open the lower turning valve 304 on the same side. The air flows from the air inlet and outlet pipes 301 on one side into the upper connecting pipe 202, and then flows into one of the air filters. In the air filter body 1, the air flows through the lower connecting pipe 201 after being filtered, and flows into the inlet and outlet pipe 301 on the other side from the connecting pipe 302 on the other side and flows out. When the air circulation direction needs to be switched, the switches of the upper steering valve 303 and the lower steering valve 304 are switched through the second regulating component. The air flows into the air filter body 1 from the inlet and outlet pipe 301 on the other side, and flows out from the inlet and outlet pipe 301 on one side after being filtered, so that the device can filter the air circulating in both directions. When the air filtering direction needs to be changed, there is no need to disassemble and reassemble, which is convenient for use.

[0047] Furthermore, the valve plates of the two upper double valves 203 are vertically arranged, the valve plates of the two lower double valves 203 are vertically arranged, and the valve plates of each upper double valve 203 are arranged at the same angle as the valve plates of the lower double valves 203 on the same side, to ensure that when the upper double valve 203 and the lower double valve 203 on one side are opened or closed, the upper double valve 203 and the lower double valve 203 on the other side are in opposite states, so that only one air filter body 1 is always working and the other air filter body 1 is on standby.

[0048] Furthermore, the valve plates of the two upper steering valves 303 are vertically arranged, the valve plates of the two lower steering valves 304 are vertically arranged, and the valve plates of each upper steering valve 303 are vertically arranged with the valve plates of the lower steering valves 304 on the same side, to ensure that at the same time, only one of the two upper steering valves 303 is in an open state, and only one of the two lower steering valves 304 is also in an open state, and the upper steering valves 303 and the lower steering valves 304 on the same side are not opened at the same time, so that air can only enter from one of the inlet and outlet pipes 301 at all times, flow through the air filter body 1, flow to the connecting pipe 302 on the other side, and finally be discharged from the other inlet and outlet pipe 301, to avoid chaotic air circulation and affect the air filtration effect.

[0049] Furthermore, if Figure 6-Figure 7 As shown, the second adjustment component 306 includes a cylinder 3061, a driving gear 3062, two driven gears 3063, two first pulleys 3064, two belts 3065 and two second pulleys 3066, the cylinder 3061 is fixedly mounted on the outer wall of the upper connecting tube 202, the driving gear 3062 and the two driven gears 3063 are both mounted on the top of the cylinder 3061 through a rotating shaft, the two driven gears 3063 are both meshed with the driving gear 3062, the two first pulleys 3064 are respectively fixedly connected to the two driven gears 3063, and the valve plates of the upper steering valves 303 and the valve plates of the lower steering valves 304 on the same side are connected. A steering connecting rod 305 is fixedly installed, and the two second pulleys 3066 are fixedly connected to the two steering connecting rods 305 respectively. Each of the belts 3065 is respectively sleeved between the corresponding first pulley 3064 and the second pulley 3066. By rotating the driving gear 3062, the two driven gears 3063 can be driven to rotate synchronously. The driven gear 3063 drives the corresponding first pulley 3064 to rotate, and the two steering connecting rods 305 are driven to rotate synchronously through the belt transmission, thereby driving the valve plates of the two upper steering valves 303 and the valve plates of the two lower steering valves 304 to rotate synchronously, so as to facilitate the synchronous control of the switching of each upper steering valve 303 and each lower steering valve 304.

[0050] Further, the second adjustment component 306 also includes a ring 3067, a disk 3068 and a rotating knob 3069, the ring 3067 is fixedly installed on the top of the cylinder 3061, the disk 3068 is arranged in the ring 3067, and the disk 3068 is fixedly connected to the rotating shaft of the driving gear 3062, the rotating knob 3069 is fixedly installed on the top of the disk 3068, a sliding cavity is provided in the disk 3068, a sliding block 3071 is slidably installed in the sliding cavity, one end of the sliding cavity is connected to the outside, a snap-fit ​​head 3072 is fixedly installed on the outward side of the sliding block 3071, a spring 3073 is provided on the inward side of the sliding block 3071, and two snap-fit ​​grooves 3070 are provided on the inner wall of the ring 3067, two The line connecting the engaging groove 3070 and the axis of the disk 3068 is 90°. Under normal circumstances, the engaging head 3072 is engaged with one of the engaging grooves 3070. Turning the rotating knob 3069 drives the disk 3068 to rotate, and the engaging head 3072 is pushed and retracted into the sliding cavity. The spring 3073 is compressed. When the engaging head 3072 rotates to the position of the other engaging groove 3070, the engaging head 3072 pops out of the sliding cavity under the action of the spring 3073 and extends into the engaging groove 3070, completing the 90° rotation of the disk 3068, driving the driving gear 3062 to rotate 90°, thereby driving the valve plate of each upper steering valve 303 and the valve plate of each lower steering valve 304 to rotate 90°, completing the switching of each upper steering valve 303 and each lower steering valve 304.

[0051] Furthermore, the engaging head 3072 and the engaging groove 3070 are both hemispherical, and the engaging head 3072 and the engaging groove 3070 have the same size. Due to the hemispherical design of the engaging head 3072, when the rotating knob 3069 is twisted to drive the disc 3068 to rotate, the force applied by the side of the engaging groove 3070 to the side of the engaging head 3072 is partially converted into a force to push the engaging head 3072 into the sliding cavity, which is convenient for manual adjustment of the valve plate rotation. In the absence of manpower, a slight external force cannot push the engaging head 3072 to retract into the sliding cavity. The engaging head 3072 cooperates with the engaging groove 3070 to fix the disc 3068, thereby preventing the upper steering valve 303 and the lower steering valve 304 from accidentally switching.

[0052] Furthermore, the structure of the first adjusting component 208 is the same as that of the second adjusting component 306. The cylinder 3061 on the first adjusting component 208 is fixedly installed on the outer wall of the lower connecting pipe 201. A double connecting rod 205 is fixedly installed between the valve plate of each upper double valve 203 and the valve plate of the lower double valve 203 on the same side. The two second pulleys 3066 on the first adjusting component 208 are respectively fixedly connected to the two double connecting rods 205, so as to facilitate the synchronous control of the switching of each upper double valve 203 and the lower double valve 203.

[0053] Furthermore, if Figure 8 As shown, the air filter body 1 also includes a top cover 103, an outer shell 104 and a filter element 105. The air inlet pipe 101 is fixedly installed on the outer wall of the top cover 103 and is connected to the air inlet pipe 101. The air outlet pipe 102 is fixedly installed on the outer wall of the outer shell 104 and is connected to the air outlet pipe 102. The filter element 105 is fixedly installed on the top inside the outer shell 104. The top cover 103 and the outer shell 104 are connected by a flange, which is convenient for separating the top cover 103 from the outer shell 104, thereby facilitating the internal maintenance of the air filter body 1 and the replacement of the filter element 105.

[0054] Furthermore, a one-way air valve 308 is fixedly installed on the top of the connecting pipe 302, and the flow direction of the one-way air valve 308 is toward the inlet and outlet air ducts 301, preventing air from directly entering the air filter body 1 through the connecting pipe 302, thereby preventing unfiltered air from flowing out.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A two-way air filter, comprising two air filter bodies (1), each of which is provided with an air inlet pipe (101) and an air outlet pipe (102), characterized in that: The invention also comprises a double-link mechanism (2), a steering mechanism (3) and a control mechanism. The air intake pipe (101) and the air outlet pipe (102) are provided with air quality monitoring sensors, and the air quality monitoring sensors are connected to the control mechanism. The double-link mechanism (2) comprises an upper connecting pipe (202), a lower connecting pipe (201), two upper double-link valves (204), two lower double-link valves (203) and a first regulating component (208). The two air intake pipes (101) are respectively connected to the two ends of the upper connecting pipe (202) through the two upper double-link valves (204). The two air outlet pipes (102) are connected to the two ends of the lower connecting pipe (201) through the two lower double valves (203), respectively, and the first regulating component (208) can synchronously regulate the valve plates of the two upper double valves (204) and the valve plates of the two lower double valves (203) to rotate 90 degrees; the valve plates of the two upper double valves (204) are arranged vertically, and the valve plates of the two lower double valves (203) are arranged vertically, and the valve plates of each upper double valve (204) are arranged at the same angle as the valve plates of the lower double valves (203) on the same side; The steering mechanism (3) comprises two air inlet and outlet pipes (301), two connecting pipes (302), two upper steering valves (303), two lower steering valves (304) and a second regulating assembly (306), one end of the two air inlet and outlet pipes (301) are respectively connected to the middle of the upper connecting pipe (202) through the two upper steering valves (303), one end of the two connecting pipes (302) are respectively connected to the middle of the two air inlet and outlet pipes (301), and the other end of the two connecting pipes (302) are respectively connected to the middle of the two air inlet and outlet pipes (301). The ends are respectively connected to the middle part of the lower connecting pipe (201) through the two lower turning valves (304), and the second regulating component (306) can synchronously regulate the valve plates of the two upper turning valves (303) and the valve plates of the two lower turning valves (304) to rotate 90 degrees; the valve plates of the two upper turning valves (303) are arranged vertically, the valve plates of the two lower turning valves (304) are arranged vertically, and the valve plates of each upper turning valve (303) are arranged vertically with the valve plates of the lower turning valves (304) on the same side; The second adjustment component (306) comprises a cylinder (3061), a driving gear (3062), two driven gears (3063), two first pulleys (3064), two belts (3065) and two second pulleys (3066). The cylinder (3061) is fixedly mounted on the outer wall of the upper connecting tube (202). The driving gear (3062) and the two driven gears (3063) are both mounted on the top of the cylinder (3061) via a rotating shaft. The two driven gears (3063) are meshed with the driving gear (3062). A pulley (3064) is fixedly connected to the two driven gears (3063) respectively, a steering connecting rod (305) is fixedly installed between the valve plate of each upper steering valve (303) and the valve plate of the lower steering valve (304) on the same side, the two second pulleys (3066) are fixedly connected to the two steering connecting rods (305), and each belt (3065) is respectively sleeved between the corresponding first pulley (3064) and the second pulley (3066); the structure of the first adjustment component (208) is the same as that of the second adjustment component (306); The control mechanism is arranged at the top of the first regulating component (208) and the second regulating component (306), and collects data through the air quality monitoring sensor to calculate the filter replacement index H. If the filter replacement index H=1, the control mechanism controls the first regulating component (208) to rotate the regulating valve plate and issues a filter element replacement alarm. The filter replacement index H is calculated according to the following formula: Among them, Q out and Q in are the air quality monitoring values ​​at the air outlet and the air inlet respectively, [Q] is the permissible difference in air quality, T is the usage time of the air filter body (1), and [T] is the permissible value of the usage time.

2. A two-way air filter according to claim 1, characterized in that: The second adjustment component (306) further comprises a ring (3067), a disk (3068) and a rotating knob (3069), wherein the ring (3067) is fixedly mounted on the top of the cylinder (3061), the disk (3068) is disposed inside the ring (3067), and the disk (3068) is fixedly connected to the rotating shaft of the driving gear (3062), the rotating knob (3069) is fixedly mounted on the top of the disk (3068), and the disk (3068) is fixedly mounted on the top of the cylinder (3061). ) is provided with a sliding cavity, a sliding block (3071) is slidably installed in the sliding cavity, one end of the sliding cavity is connected to the outside, a snap-fit ​​head (3072) is fixedly installed on the outward side of the sliding block (3071), a spring (3073) is provided on the inward side of the sliding block (3071), two snap-fit ​​grooves (3070) are provided on the inner wall of the ring (3067), and the line connecting the two snap-fit ​​grooves (3070) and the axis of the disk (3068) is at 90 degrees.

3. A two-way air filter according to claim 2, characterized in that: The engaging head (3072) and the engaging groove (3070) are both hemispherical, and the engaging head (3072) and the engaging groove (3070) have the same size.

4. A two-way air filter according to claim 1, characterized in that: The cylinder (3061) on the first adjusting component (208) is fixedly installed on the outer wall of the lower connecting pipe (201), and a double connecting rod (205) is fixedly installed between the valve plate of each upper double valve (204) and the valve plate of the lower double valve (203) on the same side, and the two second pulleys (3066) on the first adjusting component (208) are respectively fixedly connected to the two double connecting rods (205).

5. A two-way air filter according to claim 1, characterized in that: The air filter body (1) further comprises a top cover (103), an outer shell (104) and a filter element (105); the air inlet pipe (101) is fixedly mounted on the outer wall of the top cover (103) and is in communication with the air inlet pipe (101); the air outlet pipe (102) is fixedly mounted on the outer wall of the outer shell (104) and is in communication with the air outlet pipe (102); the filter element (105) is fixedly mounted on the top of the outer shell (104); and the top cover (103) and the outer shell (104) are connected via a flange.

6. A two-way air filter according to claim 1, characterized in that: A one-way air valve (308) is fixedly installed on the top of the connecting pipe (302), and the flow direction of the one-way air valve (308) is toward the inlet and outlet pipes (301).

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