A device for alternately taking and placing filter paper for air detection

Abstract

The present invention provides a device for alternatingly taking and placing filter paper for air detection, which belongs to the field of air detection technology. It includes a filter shell, both sides of the filter shell are fixedly connected to a mounting plate by a first bolt, the top of the mounting plate is provided with a U-shaped groove on both sides, a shaft rod is rotatably connected in the U-shaped groove, and a filter paper cylinder is installed on the outer wall of the shaft rod; the invention utilizes the filter paper cylinders respectively arranged on both sides, and by rolling one side to the other side, it can perform all-weather continuous sampling and detection of the environment for required air detection, so that the air quality conditions in various time periods throughout the day can be known; and the detachable setting between the filter shell, the mounting plate, the shaft rod and the limit plate can be used to realize quick taking and placing of new and old filter papers, thereby improving the convenience of the device; and through the linkage effect between the power shaft, the air distribution pipe and the knocking ball, while ensuring the detection effect, it can also avoid the error influence caused by sample residue, thereby improving the detection accuracy of the device.

Description

Technical Field

[0001] The present invention relates to the field of air detection, and in particular to a device for alternately taking and placing filter paper for air detection. Background Art

[0002] Currently, in the process of air detection, it is necessary to extract air through an exhaust device and then filter the air through filter paper, so as to use the filter paper for sampling, and then detect the residue attached to the filter paper to achieve air quality detection.

[0003] The invention patent with publication number "CN112426808A" discloses "a device for alternating taking and placing of filter paper for air detection". During use, the patented device rotates the rotary handwheel in the taking and placing control mechanism, and the adjusting device can control the rotating adjustment plate in the placement fixing device to rotate up and down. The rotating adjustment plate that rotates up and down can control the first placement ring and the second placement ring to be alternately inserted into the interior of the sampling tube through the second sampling slot and the first sampling slot and pulled out from the interior of the sampling tube. Therefore, the filter paper placed inside the first placement ring and the second placement ring can be conveniently and quickly inserted into the interior of the sampling tube for sampling, and can be quickly taken out after sampling. In addition, the filter paper placed inside the first placement ring and the second placement ring can be fixed inside the placement slot by pressing the squeezing fixing column, so that the filter paper is fixed, which is convenient for taking and filtering.

[0004] However, during use, the above patent uses a single piece of filter paper to collect samples. First of all, not to mention the difficulty of cutting and installing a single piece of filter paper, the main reason is that the above device uses a piece of filter paper to realize the sampling process of the entire process, so that the test result can only be the average value of the air quality throughout the day, or the test value of a certain period of time, and it is impossible to achieve all-day and time-divided detection, which leads to a decrease in the accuracy and representativeness of the test results. Summary of the Invention

[0005] In order to make up for the above shortcomings, the present invention provides a device for alternatingly taking and placing filter paper for air detection, which aims to improve the problem that traditional detection results can only be the average value of air quality for the whole day, or the detection value of a certain period of time, and cannot realize all-day time-divided detection, thereby reducing the accuracy and representativeness of the detection results.

[0006] The present invention is achieved in that:

[0007] The present invention provides a device for alternately taking and placing filter paper for air detection, comprising a filter housing, wherein both sides of the filter housing are fixedly connected to a mounting plate by a first bolt, a top of the mounting plate is provided with a U-shaped groove on both sides, a shaft is rotatably connected in the U-shaped groove, both ends of the shaft are threadedly connected to a limit plate, a filter paper cylinder is installed on the outer side wall of the shaft, and filter paper is provided on the outer side wall of the filter paper cylinder, and a sleeve is fixedly connected between the two mounting plates;

[0008] The sampling component is arranged on the side wall of the mounting plate and is used to collect the external air;

[0009] The cleaning component is installed inside the filter housing and is used to knock and clean the dust attached to the inner wall of the sleeve.

[0010] By adopting the above technical solution, it is possible to conduct continuous sampling and testing of the environment where air testing is required around the clock, so that the air quality conditions at various time periods throughout the day can be known, and thus a better treatment plan for air management can be formulated; and the filter paper can also be easily replaced, and the new and old filter papers can be quickly taken in and out, thereby improving the convenience of the device.

[0011] Preferably, a mounting hole is formed on the side wall of the mounting plate at the U-shaped groove, the first motor is fixedly connected to the mounting hole by a second bolt, a cross flange is fixedly connected to the output shaft end of the first motor, a cross groove is formed on the side of the limiting plate away from the shaft, and the cross groove is engaged with the cross flange;

[0012] By adopting the above technical solution, the first motor can be quickly disassembled, so that the shaft can be quickly removed from the U-shaped groove, and the filter paper tube can be quickly replaced, thereby improving the efficiency of the device in taking and placing filter paper.

[0013] Preferably, the side walls of the sleeve are provided with air holes at equal intervals, the side walls of the filter housing are provided with air outlet holes at equal intervals, the top of the filter housing is fixedly connected to a top cover between the two mounting plates, the two mounting plates are rotatably connected to a positioning shaft at the bottom of the filter housing, the side walls of the mounting plates are fixedly connected to an air inlet pipe, and the air inlet pipe is communicated with the inner cavity of the sleeve;

[0014] By adopting the above technical solution, the air in the detection area is filled into the sleeve from the air inlet pipe, and then the air moves from the air holes on the inner wall of the sleeve to the filter paper on the inner wall of the filter shell in a relatively regular and forceful manner, thereby improving the adsorption and filtration effect of the filter paper.

[0015] Preferably, both sides of the top of the filter housing are provided with arc-shaped rounded corners, both sides of the top cover are provided with arc-shaped rounded corners, both sides of the top of the filter housing are aligned with both sides of the top cover, and the distance between the top of the filter housing and the top cover is greater than the thickness of the filter paper;

[0016] By adopting the above technical solution, firstly, the filter papers on both sides can be straightened, and secondly, the friction force when the filter papers move can be effectively reduced, thereby avoiding the possibility of wear of the filter papers during movement, thereby ensuring the use effect of the filter papers and further ensuring the continuity of the operation of the device.

[0017] Preferably, the sampling assembly includes a connecting plate, the connecting plate is fixedly connected to the inner wall of the air inlet pipe, the bottom of the connecting plate is rotatably connected to a power shaft, a driving blade is fixedly connected to a side of the outer wall of the power shaft close to the connecting plate, a driven runner is fixedly connected to the side wall of the driving blade, and the driven runner is fixedly connected to the outer wall of the power shaft, a second motor is fixedly connected to the bottom of the mounting plate, the output shaft of the second motor is fixedly connected to the driving runner, and the driving runner and the driven runner are connected by a belt transmission;

[0018] By adopting the above technical solution, an adsorption force can be generated at the end of the inner cavity of the intake pipe close to the outside, and a driving force can be generated at the end of the inner cavity of the intake pipe close to the sleeve, so that the outside air can quickly enter the sleeve, thereby ensuring the sampling effect of the device.

[0019] Preferably, a bearing collar is installed on the side wall of the air intake pipe, an air distribution pipe is fixedly connected to the outer wall of the bearing collar, and the air distribution pipes are arranged at equal intervals along the central axis of the bearing collar, the inner wall of the bearing collar is fixedly connected to the outer wall of the power shaft through a connecting rod, and the air distribution pipe is connected to the inner cavity of the air intake pipe;

[0020] By adopting the above technical solution, the air distribution tube can be rotated during the sampling process, thereby collecting air at various angles in the detection area, thereby improving the representativeness of the sampling results of the device and further improving the accuracy of subsequent detection results.

[0021] Preferably, the side wall of the driven runner is provided with a flow groove, and the flow groove is adapted to the gap between the driving blades, and the driving blades and the side wall of the driven runner are both provided with weight-reducing grooves, and the weight-reducing grooves are arranged at equal intervals along the center of the power shaft;

[0022] By adopting the above technical solution, the adsorption and pushing effects on the airflow can be improved, so that a larger amount of air can enter, thereby better reflecting the air conditions in the detected area; and it can also reduce the power required for the driving blades and the driven impeller to rotate, thereby reducing power consumption and improving the energy-saving effect of the device.

[0023] Preferably, the cleaning assembly includes an interrupted ring, which is fixedly connected to the inner wall of the sleeve, an end of the power shaft close to the interrupted ring is fixedly connected to a spring telescopic rod, and an end of the spring telescopic rod away from the power shaft is fixedly connected to a knocking ball;

[0024] By adopting the above technical solution, the inner wall of the sleeve can be vibrated by using a spring telescopic rod in conjunction with a knocking ball during the process of the airflow entering the sleeve, so that the dust attached to the inner and outer walls of the sleeve can be shaken off when the airflow enters the sleeve, thereby effectively avoiding the influence of the attached dust on subsequent detection results, thereby improving the accuracy of the detection effect of the device.

[0025] Preferably, the fractures of the interrupted ring are all processed with arc-shaped rounded corners, the fractures of the interrupted ring are arranged at equal intervals along the central axis of the sleeve, and the center of the interrupted ring is aligned with the center of the striking ball;

[0026] By adopting the above technical solution, the friction force generated by the knocking ball sliding on the discontinuous ring can be reduced, thereby not only reducing the wear between the discontinuous ring and the knocking ball, but also ensuring the vibration effect of the knocking ball.

[0027] Preferably, the surface of the filter paper wrapped around the outer wall of the filter paper cylinder is provided with scale lines, and the distance between every two adjacent scale lines is the same;

[0028] By adopting the above technical solution, the air quality conditions at each time period can be known, thereby enabling better comprehensive and continuous detection of the environment.

[0029] The beneficial effects of the present invention are as follows: by utilizing the filter paper cylinders respectively arranged on both sides and rolling them from one side to the other, continuous sampling and detection of the environment in which air detection is required can be carried out around the clock, so that the air quality conditions in various time periods throughout the day can be known, and thus a treatment plan for air treatment can be better formulated; and by utilizing the detachable arrangement between the filter shell, the mounting plate, the shaft rod and the limit plate, the filter paper can be conveniently replaced, and the new and old filter papers can be quickly taken in and put away, thereby improving the convenience of the device; and through the linkage effect between the power shaft, the air distribution pipe and the knocking ball, while ensuring the detection effect of the device, the error influence caused by sample residue can also be effectively avoided, thereby improving the detection accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a schematic diagram of the overall structure of a filter paper alternately taking and placing device for air detection provided by an embodiment of the present invention;

[0032] Figure 21 is a schematic side view of the overall structure of an alternately taking and placing device for air detection filter paper provided by an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of a partial cross-sectional structure of an alternately removing and placing filter paper for air detection provided by an embodiment of the present invention;

[0034] Figure 4 The invention provides an alternate taking and placing device for filter paper for air detection. Figure 3 Schematic diagram of the enlarged structure of area A in the middle;

[0035] Figure 5 It is a schematic side view of a partial cross-sectional structure of an alternately taking and placing device for air detection filter paper provided by an embodiment of the present invention;

[0036] Figure 6 The invention provides an alternate taking and placing device for filter paper for air detection. Figure 5 Schematic diagram of the partially enlarged structure;

[0037] Figure 7 This is a schematic diagram of a half-section structure of a device for alternately taking and placing filter paper for air detection provided by an embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of the internal structure of a sleeve of an alternately removing and placing device for air detection filter paper provided by an embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram of the disassembled structure of a filter paper cartridge of an air detection filter paper alternately taking and placing device provided by an embodiment of the present invention;

[0040] Figure 10 The present invention is a schematic diagram of the filter paper unfolding structure of an alternate filter paper taking and placing device for air detection provided by an embodiment of the present invention.

[0041] In the figure: 1. filter shell; 101. air outlet; 102. top cover; 2. mounting plate; 21. U-shaped groove; 22. shaft; 23. limit plate; 24. filter paper tube; 25. mounting hole; 251. first motor; 26. cross flange; 27. cross groove; 28. positioning shaft; 29. ​​air inlet pipe; 3. sampling assembly; 31. connecting plate; 32. power shaft; 33. driving blade; 34. driven runner; 35. driving runner; 36. bearing ring; 37. air distribution pipe; 4. cleaning assembly; 41. interrupter ring; 42. spring telescopic rod; 43. knocking ball; 5. sleeve; 51. air vent. DETAILED DESCRIPTION

[0042] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 making creative efforts shall fall within the scope of protection of the present invention.

[0043] Example

[0044] Reference Figure 1-10 , a device for alternately taking and placing filter paper for air detection, comprising a filter housing 1, both sides of the filter housing 1 are fixedly connected to a mounting plate 2 by a first bolt, a top of the mounting plate 2 is provided with a U-shaped groove 21 on both sides, a shaft 22 is rotatably connected in the U-shaped groove 21, both ends of the shaft 22 are threadedly connected to a limit plate 23, a filter paper cylinder 24 is installed on the outer wall of the shaft 22, and filter paper is provided on the outer wall of the filter paper cylinder 24, and a sleeve 5 is fixedly connected between the two mounting plates 2;

[0045] Sampling component 3, the sampling component 3 is arranged on the side wall of the mounting plate 2, and the sampling component 3 is used to collect external air;

[0046] The cleaning component 4 is installed inside the filter shell 1 and is used to knock and clean the dust attached to the inner wall of the sleeve 5.

[0047] It should be noted that the filter housing 1 , the mounting plate 2 , the shaft 22 and the limiting plate 23 can all be disassembled and installed, thereby improving the convenience of using the device.

[0048] Reference Figure 1 、 Figure 2 and Figure 9 Furthermore, a mounting hole 25 is formed on the side wall of the mounting plate 2 at the U-shaped groove 21. A first motor 251 is fixedly connected to the mounting hole 25 by a second bolt. A cross flange 26 is fixedly connected to the output shaft end of the first motor 251. A cross groove 27 is formed on the side of the limiting plate 23 away from the shaft 22, and the cross groove 27 is engaged with the cross flange 26.

[0049] It should be noted that: through the setting of the above-mentioned structure, the first motor 251 can be disassembled and installed first, so that the shaft rod 22 in the U-shaped groove 21 can be replaced more quickly in the later stage; and the engagement connection between the cross groove 27 and the cross flange 26 can ensure the rotation effect of the shaft rod 22, thereby improving the stability of the rotation of the shaft rod 22.

[0050] Among them, it needs to be explained that the first motor 251 is provided with three gears, namely low speed, medium speed and high speed (this is the existing technology and will not be described in detail); the above three gears respectively control the winding speed of the filter paper, so that different length detection amounts can be adjusted at different times, thereby improving the detection effect of the device.

[0051] Reference Figure 3 、 Figure 7 and Figure 8 Furthermore, air holes 51 are opened at equal intervals on the side wall of the sleeve 5, and air outlet holes 101 are opened at equal intervals on the side wall of the filter housing 1. The top of the filter housing 1 is fixedly connected with a top cover 102 between the two mounting plates 2. The two mounting plates 2 are located at the bottom of the filter housing 1 and are rotatably connected with a positioning shaft 28. The side wall of the mounting plate 2 is fixedly connected with an air inlet pipe 29, and the air inlet pipe 29 is connected to the inner cavity of the sleeve 5.

[0052] Reference Figure 7 , further, both sides of the top of the filter housing 1 are provided with arc-shaped rounded corners, both sides of the top cover 102 are provided with arc-shaped rounded corners, both sides of the top of the filter housing 1 are aligned with both sides of the top cover 102, and the distance between the top of the filter housing 1 and the top cover 102 is greater than the thickness of the filter paper;

[0053] It should be noted that: by utilizing the gap between the top cover 102 and the filter shell 1, and the positioning shafts 28 set on both sides of the bottom of the filter shell 1, the filter paper can be straightened and covered on the entire inner wall of the filter shell 1, so that the inner cavity of the filter shell 1 forms a closed space, so that the air entering the filter shell 1 can be completely filtered, thereby improving the accuracy of the test results; and in the process of moving the filter paper, the squeezing effect of the positioning shafts 28 can also make dust and impurities better adhere to the filter paper, thereby further ensuring the accuracy of the test results.

[0054] Reference Figure 2 、 Figure 4 and Figure 6 Furthermore, the sampling assembly 3 includes a connecting plate 31, which is fixedly connected to the inner wall of the air inlet pipe 29. The bottom of the connecting plate 31 is rotatably connected to a power shaft 32. A driving blade 33 is fixedly connected to the side of the outer wall of the power shaft 32 close to the connecting plate 31. A driven runner 34 is fixedly connected to the side wall of the driving blade 33, and the driven runner 34 is fixedly connected to the outer wall of the power shaft 32. A second motor is fixedly connected to the bottom of the mounting plate 2, and a driving runner 35 is fixedly connected to the output shaft of the second motor. The driving runner 35 and the driven runner 34 are connected by a belt drive.

[0055] It should be noted that: the second motor drives the active pulley 35 to rotate, which cooperates with the belt to rotate the driven pulley 34, the power shaft 32 and the drive blade 33 at the same time, thereby generating an adsorption force at the end of the inner cavity of the air intake pipe 29 close to the outside, and generating a driving force at the end of the inner cavity of the air intake pipe 29 close to the sleeve 5, thereby allowing the outside air to quickly enter the sleeve 5, and under the action of the driving force, this part of the air will move from the air vents 51 on the inner wall of the sleeve 5 more regularly and with a certain momentum to the filter paper on the inner wall of the filter shell 1, thereby improving the collection effect of impurities in the air.

[0056] Reference Figure 2 、 Figure 4 and Figure 6 Furthermore, a bearing collar 36 is installed on the side wall of the air intake pipe 29, and an air distribution pipe 37 is fixedly connected to the outer wall of the bearing collar 36. The air distribution pipes 37 are arranged at equal intervals along the central axis of the bearing collar 36. The inner wall of the bearing collar 36 is fixedly connected to the outer wall of the power shaft 32 through a connecting rod, and the air distribution pipe 37 is connected to the inner cavity of the air intake pipe 29.

[0057] It should be noted that: during the rotation of the power shaft 32, the air distribution pipe 34 will also be driven to rotate, thereby drawing air at various angles in the detection area, thereby increasing the coverage of air extraction, thereby making the detection sample capacity more representative.

[0058] Reference Figure 4 、 Figure 6 Furthermore, a circulation groove is opened on the side wall of the driven runner 34, and the circulation groove is adapted to the gap between the driving blade 33. The driving blade 33 and the side wall of the driven runner 34 are penetrated by a weight-reducing groove, and the weight-reducing grooves are arranged at equal intervals along the center of the power shaft 32.

[0059] It should be noted that the driven impeller 34, the driving blades 33 and the power shaft 32 rotate simultaneously. Due to the setting of the circulation groove and the weight reduction groove, during the rotation of the driven impeller 34, it will also play the same role as the driving blades 33, thereby accelerating the extraction and pushing of the gas.

[0060] Reference Figure 3 、 Figure 8 Furthermore, the cleaning assembly 4 includes an intermittent ring 41, which is fixedly connected to the inner wall of the sleeve 5. The end of the power shaft 32 close to the intermittent ring 41 is fixedly connected to a spring telescopic rod 42, and the end of the spring telescopic rod 42 away from the power shaft 32 is fixedly connected to a knocking ball 43;

[0061] It should be noted that: during the rotation of the power shaft 32, the spring telescopic rod 43 and the knocking ball 43 will also be driven to rotate, so that the knocking ball 43 slides on the discontinuous ring 41, and when it slides to the discontinuous area of ​​the discontinuous ring 41, the spring telescopic rod 43 will be used to rebound. The knocking ball 43 will vibrate the inner wall of the sleeve 5, so as to shake off the dust attached to the inner and outer walls of the sleeve 5, and the dust and impurities that fall at this time will fall directly onto the filter paper, and then fit tightly with the filter paper under the squeezing effect of the positioning shaft 28, effectively avoiding impurity residue, which not only improves the detection effect of the device, but also avoids the error caused by the attached impurities to the next time period or the next detection, thereby improving the detection accuracy of the device.

[0062] Reference Figure 3 、 Figure 8 Furthermore, the fractures of the interrupted ring 41 are all processed with arc-shaped rounded corners, the fractures of the interrupted ring 41 are arranged at equal intervals along the central axis of the sleeve 5, and the center of the interrupted ring 41 is aligned with the center of the striking ball 43;

[0063] It should be noted that: when the telescopic rod 43 drives the knocking ball 43 to slide to the fracture of the discontinuous ring 41, the knocking ball 43 will pop out instantly under the rebound action of the telescopic rod 43 and contact with the bottom of the fracture of the discontinuous ring 41, thereby forming a knocking effect, ensuring the cleanliness of the inner and outer walls of the sleeve 5, avoiding the influence of residual errors, and improving the accuracy of the detection results.

[0064] Reference Figure 10 , further, the surface of the filter paper wrapped around the outer wall of the filter paper cylinder 24 is provided with scale lines, and the spacing between every two adjacent scale lines is the same;

[0065] It should be noted that: the scale lines set on the surface of the filter paper tube 24 represent one hour between each adjacent two lines, and finally, by detecting the air impurities in each time period, the air quality changes in the area throughout the day can be fully understood; and by using the three gears of low speed, medium speed and high speed set by the first motor 251, targeted sampling and detection at a specific speed can be performed on a certain time period of the day; that is, one scale in the high-speed state represents one hour, two scales in the medium-speed state represent one hour, and three scales in the low-speed state represent one hour; in this way, using low-speed sampling and detection in the morning when the air quality is the highest and in the evening when the air quality is the lowest, the collected sample capacity can be larger, so that the air quality of the specific time period can be reflected more accurately, thereby improving the practicality of the device.

[0066] Reference Figure 1-10The working principle of the device for alternatingly taking and placing filter paper for air detection is as follows: first, fix the filter housing 1 and the mounting plate 2 on one side by a first bolt, then install the filter paper tube 24 with filter paper on the shaft rod 22 on one side, fix the filter paper tube 24 by the limit plate 23 and install it in the U-shaped groove 21, at this time, pass the other end of the filter paper through the positioning shaft 28 inside the filter housing 1 in sequence, and finally pass it out from under the shaft rod 22 on the other side, then install another filter paper tube 24 without filter paper on the shaft rod 22 here, then glue the filter paper that has passed through to the side wall of the shaft rod 22 here by glue and wrap it twice and then install it in the U-shaped groove 21, then gradually install the mounting plate 2 on the other side and the top cover 102 on the top of the filter housing 1, and fix the first motor 251 to the mounting plate 2 by the second thread, and then pass through this During the process, the cross protrusion 26 is engaged with the cross groove 27, so that the rotation of the first motor 251 can be used to drive the filter paper to be wound onto the filter paper cylinder 24 on the other side, thereby forming a detection device that can be alternately taken and placed; then, when all the filter papers are transferred to the other filter paper cylinder 24, the blank filter paper cylinder 24 is first removed and the filter paper is cut, and then the new filter paper cylinder 24 wrapped with filter paper is installed on this shaft rod 22, and the filter paper port and the previous old port are glued and fixed by a stapler, and then the first motor 251 is disassembled from the mounting plate 2 through the second thread, and the filter paper cylinder 24 wrapped with filter paper is immediately removed, and the filter paper is slowly pulled so that the new filter paper emerges from here again, and then it is cut and replaced with a new blank filter paper cylinder 24 so that the two are fixed, thereby realizing the alternating replacement and placement of the new and old filter papers;

[0067] At the same time, the speed of the first motor 251 is pre-set during use so that the device can transfer a roll of filter paper within 24 hours. After the rolled filter paper is removed, the air quality at each time domain during the operation of the device can be obtained based on the different time domains of the scale lines on the filter paper, thereby providing a more comprehensive understanding of the air quality data in the detection area.

[0068] At the same time, the second motor drives the active wheel 35 to rotate, and the belt cooperates with the driven wheel 34, the power shaft 32 and the driving blade 33 to rotate at the same time, thereby generating an adsorption force at the end of the inner cavity of the air inlet pipe 29 close to the outside, and generating a driving force at the end of the inner cavity of the air inlet pipe 29 close to the sleeve 5, thereby allowing the outside air to quickly enter the sleeve 5, and under the action of the driving force, this part of the air will move from the air vents 51 on the inner wall of the sleeve 5 to the filter paper on the inner wall of the filter housing 1 in a relatively regular and forceful manner, thereby completing the filtration and collection of impurities in the air, and being The filtered air will pass through the filter paper and be discharged from the air outlet 101; and in the process of the rotation of the power shaft 32, it will also drive the air distribution pipe 34 to rotate, thereby pumping the air at various angles in the detected area; and the power shaft 32 will also drive the spring telescopic rod 43 and the knocking ball 43 to rotate, so that the knocking ball 43 slides on the intermittent ring 41, and when it slides to the intermittent area of ​​the intermittent ring 41, the knocking ball 43 will use the rebound effect of the spring telescopic rod 43 to vibrate the inner wall of the sleeve 5, so as to shake off the dust attached to the inner and outer walls of the sleeve 5.

[0069] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0070] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A device for alternately taking and placing filter paper for air detection, comprising a filter housing (1), characterized in that: Both sides of the filter housing (1) are fixedly connected to mounting plates (2) by first bolts, and a U-shaped groove (21) is provided on both sides of the top of the mounting plate (2), a shaft (22) is rotatably connected in the U-shaped groove (21), and both ends of the shaft (22) are threadedly connected to a limit plate (23), a filter paper cylinder (24) is installed on the outer wall of the shaft (22), and filter paper is provided on the outer wall of the filter paper cylinder (24), and a sleeve (5) is fixedly connected between the two mounting plates (2); A sampling component (3), the sampling component (3) is arranged on the side wall of the mounting plate (2), and the sampling component (3) is used to collect external air; A cleaning component (4), the cleaning component (4) being installed inside the filter housing (1), and the cleaning component (4) being used to knock and clean dust attached to the inner wall of the sleeve (5); The side wall of the sleeve (5) is provided with air holes (51) at equal intervals, the side wall of the filter housing (1) is provided with air outlet holes (101) at equal intervals, the top of the filter housing (1) is located between the two mounting plates (2) and is fixedly connected to a top cover (102), the two mounting plates (2) are located at the bottom of the filter housing (1) and are rotatably connected to a positioning shaft (28), the side wall of the mounting plate (2) is fixedly connected to an air inlet pipe (29), and the air inlet pipe (29) is communicated with the inner cavity of the sleeve (5); The sampling assembly (3) includes a connecting plate (31), the connecting plate (31) is fixedly connected to the inner wall of the air inlet pipe (29), the bottom of the connecting plate (31) is rotatably connected to a power shaft (32), the outer side wall of the power shaft (32) close to the connecting plate (31) is fixedly connected to a driving blade (33), the side wall of the driving blade (33) is fixedly connected to a driven runner (34), and the driven runner (34) is fixedly connected to the outer side wall of the power shaft (32), the bottom of the mounting plate (2) is fixedly connected to a second motor, and the second The motor output shaft is fixedly connected to a driving wheel (35), and the driving wheel (35) and the driven wheel (34) are connected via a belt transmission. A bearing ring (36) is installed on the side wall of the intake pipe (29). An air distribution pipe (37) is fixedly connected to the outer wall of the bearing ring (36), and the air distribution pipes (37) are arranged at equal intervals along the central axis of the bearing ring (36). The inner wall of the bearing ring (36) is fixedly connected to the outer wall of the power shaft (32) via a connecting rod, and the air distribution pipe (37) is communicated with the inner cavity of the intake pipe (29). The cleaning assembly (4) includes an interrupted ring (41), the interrupted ring (41) is fixedly connected to the inner wall of the sleeve (5), the end of the power shaft (32) close to the interrupted ring (41) is fixedly connected to a spring telescopic rod (42), and the end of the spring telescopic rod (42) away from the power shaft (32) is fixedly connected to a knocking ball (43), the fracture of the interrupted ring (41) is processed with arc fillet, the fracture of the interrupted ring (41) is arranged at equal intervals along the central axis of the sleeve (5), and the center of the interrupted ring (41) is aligned with the center of the knocking ball (43).

2. The device for alternately taking and placing filter paper for air detection according to claim 1, characterized in that: A mounting hole (25) is provided on the side wall of the mounting plate (2) at the U-shaped groove (21), a first motor (251) is fixedly connected to the mounting hole (25) via a second bolt, a cross flange (26) is fixedly connected to the output shaft end of the first motor (251), a cross groove (27) is provided on a side of the limiting plate (23) away from the shaft (22), and the cross groove (27) is engaged with the cross flange (26).

3. The device for alternately taking and placing filter paper for air detection according to claim 1, characterized in that: Both sides of the top of the filter housing (1) are provided with arc-shaped rounded corners, and both sides of the top cover (102) are provided with arc-shaped rounded corners. Both sides of the top of the filter housing (1) are aligned with both sides of the top cover (102), and the distance between the top of the filter housing (1) and the top cover (102) is greater than the thickness of the filter paper.

4. The device for alternately taking and placing filter paper for air detection according to claim 1, characterized in that: The side wall of the driven runner (34) is provided with a circulation groove, and the circulation groove is adapted to the gap between the driving blade (33). The side walls of the driving blade (33) and the driven runner (34) are both provided with weight-reducing grooves, and the weight-reducing grooves are arranged at equal intervals along the center of the power shaft (32).

5. The device for alternately taking and placing filter paper for air detection according to claim 1, characterized in that: The surface of the filter paper wrapped around the outer wall of the filter paper cylinder (24) is provided with scale lines, and the spacing between every two adjacent scale lines is the same.

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