Intake system of a detection device, method for controlling the same and detection device

Abstract

The application discloses an air intake system of a detection device, the detection device and a control method of the air intake system. The air intake system of the detection device comprises a pipeline assembly, a first filter assembly and a second filter assembly. The pipeline assembly has a first air duct and a second air duct which are parallel to each other. The pipeline assembly is configured to control airflow to selectively pass through the first air duct and / or the second air duct. The first filter assembly is arranged in the first air duct and comprises an automatic filter membrane replacement device. The second filter assembly is arranged in the second air duct. According to the air intake system of the detection device, the pipeline assembly is arranged to selectively connect the first air duct and the second air duct. The first air duct and the second air duct are both provided with filter assemblies. The flexibility in application can be improved. When one of the filter assemblies is replaced with a new filter membrane, the other air duct is connected to realize uninterrupted filtration of gas, thereby improving the filtration efficiency and the filtration effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air treatment, in particular to an air inlet system of a detection device, the detection device and a control method of the air inlet system. BACKGROUND

[0002] The gas analyzer uses a filter membrane to filter particles in the air of the air inlet, and is directly in contact with the outside air. Therefore, after being used for a period of time, the particles deposited on the filter membrane increase the pressure of the system and affect the flow pressure value of the system. At this time, a new filter membrane needs to be replaced. When the filter membrane is replaced, the fixing cover of the air filter needs to be unscrewed, and the air filter paper fixator needs to be taken out and replaced with a clean filter membrane. Generally, the air filter of each device needs to be replaced once a week, which increases the cost of using the instrument. Moreover, when the filter membrane is replaced, the work needs to be stopped, which reduces the air filtration efficiency. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, one object of the present application is to provide an air inlet system of a detection device having a pipeline assembly, which can improve the flexibility during filtration and improve the filtration efficiency.

[0004] Another object of the present application is to provide a detection device comprising the aforementioned air inlet system.

[0005] Another object of the present application is to provide an air inlet method of an air inlet system of a detection device, which is used in the aforementioned air inlet system.

[0006] The air inlet system of the detection device according to the embodiments of the present application comprises a pipeline assembly, a first filtration assembly and a second filtration assembly. The pipeline assembly has a first air passage and a second air passage connected in parallel with each other. The pipeline assembly is configured to control the airflow to selectively pass through the first air passage and / or the second air passage. The first filtration assembly is arranged in the first air passage, and the first filtration assembly comprises a filter membrane automatic replacement device. The second filtration assembly is arranged in the second air passage.

[0007] The air inlet system of the detection device according to the embodiments of the present application can improve the flexibility during application by arranging the pipeline assembly that can selectively connect the first air passage and the second air passage, and arranging the filtration assemblies in the first air passage and the second air passage. When one of the filtration assemblies is replaced with a new filter membrane, the other air passage is connected to realize uninterrupted filtration of the gas, thereby improving the filtration efficiency and filtration effect.

[0008] In addition, the air inlet system of the detection device according to the aforementioned embodiments of the present application can have the following additional technical features:

[0009] In some examples of the present application, the pipeline assembly comprises a reversing device having an inlet, a first outlet and a second outlet, the reversing device being configured to control the inlet to selectively connect to the first outlet and / or the second outlet, the first outlet being connected to the inlet of the first filter assembly, and the second outlet being connected to the inlet of the second filter assembly.

[0010] In some examples of the present application, the filter membrane automatic replacement device comprises a mounting seat having an airflow channel extending along a first direction, and a membrane replacement mechanism configured to drive the filter membrane to move along a second direction to control different positions of the filter membrane to separate the airflow channel, the first direction being perpendicular to the second direction.

[0011] In some examples of the present application, the membrane replacement mechanism comprises a first rotating wheel and a second rotating wheel, the first rotating wheel and the second rotating wheel being arranged on opposite sides of the mounting seat along the second direction, and axes of the first rotating wheel and the second rotating wheel extending along a third direction, the first direction, the second direction and the third direction being perpendicular to each other.

[0012] In some examples of the present application, the membrane replacement mechanism comprises a holding wheel, a collecting wheel and a tensioning wheel, the holding wheel being sleeved on the first rotating wheel, the collecting wheel being sleeved on the second rotating wheel, and the tensioning wheel being arranged between the holding wheel and the mounting seat and / or between the collecting wheel and the mounting seat.

[0013] In some examples of the present application, the first rotating wheel and / or the second rotating wheel is connected to a first motor along the third direction.

[0014] In some examples of the present application, the tensioning wheel comprises a first roller, a second roller and a third roller, the first roller and the second roller being arranged on opposite sides of the mounting seat along the second direction, the first roller being arranged in a first direction with the holding wheel, and the second roller and the third roller being arranged in the first direction with the collecting wheel.

[0015] In some examples of the present application, the mounting seat comprises a first part and a second part, the first part and the second part being separably clamped to the filter membrane; the first part has a first cavity, and the second part has a second cavity, the first cavity and the second cavity being in communication to form the airflow channel.

[0016] In some examples of the present application, the filter membrane automatic replacement device further comprises a first pressure detector and a second pressure detector, the first pressure detector being in communication with the first cavity, and the second pressure detector being in communication with the second cavity.

[0017] In some examples of the present application, the filter membrane automatic replacement device further comprises a gray scale detector for detecting the color of the filter membrane, the gray scale detector being arranged on the first part and being in communication with the first cavity, and the gray scale detector being opposite to the filter membrane along the first direction.

[0018] In some examples of the present application, the second part comprises a first half, a second half and an elastic member, the first half and the second half being connected along the first direction, and the elastic member being supported between the first half and the second half.

[0019] In some examples of the present application, the mounting seat comprises a second motor, and the first part and / or the second part is connected to the second motor.

[0020] In some examples of the present application, the second part is provided with a support net for placing the filter membrane and a sealing member, and the sealing member forms a sealing structure between the outer periphery of the support net and the inner wall of the second part.

[0021] In some examples of the present application, the second filter assembly is a fixed filter assembly.

[0022] In some examples of the present application, the air inlet system further comprises a first check valve, and the first check valve is arranged in the first air passage and is located downstream of the first filter assembly.

[0023] In some examples of the present application, the air inlet system further comprises a second check valve, and the second check valve is arranged in the second air passage and is located downstream of the second filter assembly.

[0024] The detection equipment according to the embodiment of the present application comprises the air inlet system as described above.

[0025] The detection equipment according to the embodiment of the present application can realize automatic replacement of the filter membrane of the detection equipment by applying the air inlet system as described above, and the detection equipment can work uninterruptedly during the replacement of the filter membrane, which is beneficial to improve the working efficiency and the filtering effect of the detection equipment and to reduce the cost of manual maintenance.

[0026] The control method of the air inlet system of the detection equipment according to the embodiment of the present application is used for the air inlet system as described above, and the method comprises the following steps: obtaining a filter membrane replacement signal of the first filter assembly; controlling the pipeline assembly to disconnect the first air passage and connect the second air passage and controlling the filter membrane automatic replacement device to replace the filter membrane according to the filter membrane replacement signal; and controlling the pipeline assembly to connect the first air passage and disconnect the second air passage after determining that the filter membrane automatic replacement device completes the replacement of the filter membrane.

[0027] The control method of the air inlet system of the detection equipment according to the embodiment of the present application,

[0028] In some examples of the present application, the air intake system comprises a pressure detector, and the control method further comprises: the air intake system obtaining an initial pressure parameter value and a current pressure parameter value of the filter membrane; if the difference between the initial pressure parameter value and the current pressure parameter value is greater than or equal to a preset value, generating a filter membrane replacement signal of the first filter assembly.

[0029] In some examples of the present application, the air intake system comprises a grayscale detector, and the control method further comprises: the air intake system obtaining an initial grayscale parameter value L0 and a current grayscale parameter value L1 of the filter membrane; if the initial grayscale parameter value L0 and the current grayscale parameter value L1 satisfy L1≤L0 / 2, generating a filter membrane replacement signal of the first filter assembly.

[0030] In some examples of the present application, the method further comprises: obtaining a start signal of the air intake system of the detection device; and controlling the filter membrane automatic replacement device to replace the filter membrane according to the start signal. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 FIG. 1 is a schematic diagram of an air intake system of a detection device in some embodiments of the present application (showing a state in which a reversing device connects a first air duct);

[0032] Figure 2 FIG. 2 is a schematic diagram of an air intake system of a detection device in some embodiments of the present application (showing a state in which a reversing device connects a second air duct);

[0033] Figure 3 FIG. 3 is a front view of an air intake system of a detection device in some embodiments of the present application;

[0034] Figure 4 FIG. 4 is a structural schematic diagram of an air intake system of a detection device in some embodiments of the present application;

[0035] Figure 5 FIG. 5 is a sectional view of an air intake system of a detection device in some embodiments of the present application;

[0036] Figure 6 FIG. 6 is a rear view of an air intake system of a detection device in some embodiments of the present application;

[0037] Figure 7 FIG. 7 is a partial structural assembly diagram of an air intake system of a detection device in some embodiments of the present application (showing a mounting seat and a grayscale detector);

[0038] REFERENCE NUMERALS:

[0039] 100, air inlet system; 10, control board; 110, first air passage; 120, second air passage; 13, reversing device; 103, inlet; 101, first outlet; 102, second outlet; 105, air outlet; 20, first filter assembly; 21, mounting seat; 210, air flow channel; 211, first part; 201, first cavity; 212, second part; 202, second cavity; 2121, first half; 2122, second half; 2123, elastic member; 2124, fixing member; 213, fixing plate; 214, second motor; 215, support net; 216, sealing member; 22, membrane replacing mechanism; 221, first rotating wheel; 222, second rotating wheel; 223, storage wheel; 224, collection wheel; 225, first roller; 226, second roller; 227, third roller; 228, first motor; 23, first pressure detector; 24, second pressure detector; 25, gray scale detector; 31, first check valve; 32, second check valve; 40, second filter assembly; 51, grating; 52, optocoupler; 200, filter membrane. DETAILED DESCRIPTION

[0040] Embodiments of the present application are described in detail below with reference to examples illustrated in the accompanying drawings, in which the same or similar components or components having the same or similar functions are denoted throughout by the same or similar reference numerals. The embodiments described below by reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0041] In combination Figure 1 And Figure 2 According to the air inlet system 100 of the detection device of the embodiments of the present application, the air inlet system 100 comprises a pipeline assembly, a first filter assembly 20 and a second filter assembly 40, the pipeline assembly has a first air passage 110 and a second air passage 120 connected in parallel with each other, and the pipeline assembly is configured to control the air flow to selectively pass through the first air passage 110 and / or the second air passage 120; the first filter assembly 20 is arranged in the first air passage 110; and the second filter assembly 40 is arranged in the second air passage 120. Specifically, the pipeline assembly can selectively communicate the first air passage 110 or the second air passage 120, so that the pipeline assembly connects the first air passage 110 and closes the second air passage 120, the gas can flow into the first air passage 110 and be filtered by the first filter assembly 20 therein, the pipeline assembly can also connect the second air passage 120 and close the first air passage 110, the gas can flow into the second air passage 120 and be filtered by the second filter assembly 40 therein. In addition, the pipeline assembly can simultaneously connect the first air passage 110 and the second air passage 120, so that the gas can be filtered by the first filter assembly 20 and the second filter assembly 40 at the same time. In this way, the flexibility of air inlet can be improved, and the flexible adjustment according to the actual application can be facilitated.

[0042] More specifically, the first filter assembly 20 comprises a filter membrane automatic replacement device, that is, the first filter assembly 20 can realize automatic replacement of the filter membrane 200. Specifically, after being used for a period of time, the particles deposited on the filter membrane 200 increase the pressure of the system, affecting the flow pressure value of the system. In order to improve the filtering efficiency and filtering effect, it is often necessary to replace a new filter membrane 200. By setting an automatic replacement device, automatic replacement of the filter membrane 200 can be realized without the need to disassemble the device for manual replacement, thereby facilitating the reduction of maintenance costs and the improvement of filtering efficiency. Therefore, generally, the pipeline assembly can connect the first gas passage 110 to make the gas flow through the first filter assembly 20 in which the filter membrane 200 can be automatically replaced for filtration. When the first filter assembly 20 needs to be replaced, the first gas passage 110 can be disconnected, and the second gas passage 120 is connected. Thus, when the first filter assembly 20 is replaced, the second filter assembly 40 of the second gas passage 120 can be used to filter the gas. After the replacement of the first filter assembly 20 is completed, the pipeline assembly can disconnect the second gas passage 120 and connect the first gas passage 110. Thus, during the replacement of the filter assembly, the gas can also be continuously filtered, which facilitates the improvement of the filtering efficiency.

[0043] The intake system 100 of the detection device according to the embodiment of the present application can improve the flexibility in application by setting the pipeline assembly that can selectively connect the first gas passage 110 and the second gas passage 120, and the filter assembly in the first gas passage 110 and the second gas passage 120. When one of the filter assemblies is replaced, the other gas passage is connected to realize uninterrupted filtration of the gas, thereby improving the filtering efficiency and filtering effect.

[0044] Optionally, at least one of the first filter assembly 20 and the second filter assembly 40 can comprise a filter membrane automatic replacement device. That is, the second filter assembly 40 can also comprise a filter membrane 200 automatic replacement assembly. In this way, when it is necessary to improve the filtering efficiency, the first gas passage 110 and the second gas passage 120 can be simultaneously opened, and the first filter assembly 20 and the second filter assembly 40 can both perform filtration to improve the filtering efficiency.

[0045] The air intake system 100 of the detection equipment according to the embodiment of the present application, the first filter assembly 20 comprises a filter membrane automatic replacement device, and the second filter assembly 40 comprises a fixed filter device, so that the filtering efficiency can be improved, the structure is simplified, and the operation cost is reduced. Specifically, when the filter membrane 200 is replaced, professional personnel need to perform manual operation, and the manpower and material resources are consumed greatly. In addition, when the filter membrane 200 is replaced, the detection equipment cannot work, the filtering efficiency is reduced, and the operation cost is increased. By arranging the automatic replacement device in the first filter assembly 20, the filter membrane 200 can be automatically replaced without manual operation, and the operation cost is reduced. In addition, when the filter membrane 200 is replaced, the air intake can be switched to the fixed filter device to perform uninterrupted filtering work. Since the filter membrane automatic replacement device can replace the filter membrane at a high speed, the replacement can be completed within 30 seconds to 1 minute, and the filter membrane needs to be replaced again after a period of time. Therefore, the filtering time of the second filter assembly 40 and the amount of gas passing through the second filter assembly 40 are small. In this way, the replacement period of the second filter assembly 40 is greatly prolonged, and therefore, the second filter assembly 40 is arranged as a fixed filter, and the filtering efficiency and filtering effect are not affected. In actual application, the first filter assembly 20 and the second filter assembly 40 can be replaced at the same time, or the replacement period of the second filter assembly 40 can be longer.

[0046] In combination Figure 1 and Figure 6 In some embodiments of the present application, the pipeline assembly comprises a reversing device 13, the reversing device 13 has an inlet 103, a first outlet 101 and a second outlet 102, and the reversing device 13 is arranged to control the inlet 103 to be selectively connected to the first outlet 101 and / or the second outlet 102. The first outlet 101 is connected to the inlet of the first filter assembly 20, and the second outlet 102 is connected to the inlet of the second filter assembly 40. Specifically, the reversing device 13 can connect the inlet 103 and the first outlet 101, so that the gas enters the inlet 103 and then flows out of the first outlet 101 and enters the first filter assembly 20 for filtering. The reversing device 13 can connect the inlet 103 and the second outlet 102, so that the gas enters the inlet 103 and then flows out of the second outlet 102 and enters the second filter assembly 40 for filtering. Alternatively, the reversing device 13 can simultaneously connect the inlet 103, the first outlet 101 and the second outlet 102, so that the first filter assembly 20 and the second filter assembly 40 can simultaneously filter the gas. The reversing device 13 can also simultaneously disconnect the inlet 103 from the first outlet 101 and the second outlet 102 to temporarily stop the filtering work.

[0047] Optionally, the reversing device 13 can be a reversing valve, such as a three-way valve, or two on-off valves, etc. For example, the reversing device 13 can include a first on-off valve that can be turned on or off to connect or disconnect the inlet 103 with the first outlet 101, and a second on-off valve that can be turned on or off to connect or disconnect the inlet 103 with the second outlet 102, so as to flexibly adjust the flow path between the inlet 103 and the first outlet 101 and the second outlet 102.

[0048] Further, in some embodiments of the present application, in combination with Figure 1 and Figure 2 , the filter membrane automatic replacement device includes a mounting seat 21 and a membrane replacement mechanism 22, the mounting seat 21 has an airflow passage 210 extending along a first direction, and the membrane replacement mechanism 22 is configured to drive the filter membrane 200 to move along a second direction so as to separate the airflow passage 210 at different positions of the filter membrane 200, and the first direction is perpendicular to the second direction. Specifically, the mounting seat 21 can be used to assemble and fix the filter membrane 200, the airflow passage 210 in the mounting seat 21 is connected with the first air duct 110, the airflow passage 210 extends along the first direction, and the filter membrane 200 extends along the second direction and is arranged in the airflow passage 210, so that the gas in the first air duct 110 can enter the airflow passage 210 and pass through the filter membrane 200 for filtration. When the filter membrane 200 needs to be replaced, the filter membrane 200 moves along a direction perpendicular to the airflow passage 210, which can facilitate the movement of the filter membrane 200 and is beneficial to space arrangement.

[0049] In some embodiments of the present application, in combination with Figure 5 , the membrane replacement mechanism 22 includes a first rotating wheel 221 and a second rotating wheel 222, the first rotating wheel 221 and the second rotating wheel 222 are arranged on opposite sides of the mounting seat 21 along the second direction, and the axes of the first rotating wheel 221 and the second rotating wheel 222 extend along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other. Thus, the opposite ends of the filter membrane 200 along the second direction can be connected with the first rotating wheel 221 and the second rotating wheel 222 respectively, and when the first rotating wheel 221 and the second rotating wheel 222 rotate, one of the first rotating wheel 221 and the second rotating wheel 222 can release a new filter membrane 200 or a blank filter membrane 200, and the other one can wind an old filter membrane 200 or a used filter membrane 200, so as to realize automatic membrane replacement.

[0050] It should be noted that the first direction can refer to the up-down direction in Figure 3 , the second direction can refer to the left-right direction in Figure 3 , and the third direction can refer to the front-rear direction in Figure 4 , and the present application is not limited thereto.

[0051] Specifically, in combination with Figure 1 and Figure 5 , the filter membrane automatic replacement device includes a mounting seat 21 and a membrane replacement mechanism 22, the mounting seat 21 has an airflow passage 210 extending along a first direction, and the membrane replacement mechanism 22 is configured to drive the filter membrane 200 to move along a second direction so as to separate the airflow passage 210 at different positions of the filter membrane 200, and the first direction is perpendicular to the second direction. Specifically, the mounting seat 21 can be used to assemble and fix the filter membrane 200, the airflow passage 210 in the mounting seat 21 is connected with the first air duct 110, the airflow passage 210 extends along the first direction, and the filter membrane 200 extends along the second direction and is arranged in the airflow passage 210, so that the gas in the first air duct 110 can enter the airflow passage 210 and pass through the filter membrane 200 for filtration. When the filter membrane 200 needs to be replaced, the filter membrane 200 moves along a direction perpendicular to the airflow passage 210, which can facilitate the movement of the filter membrane 200 and is beneficial to space arrangement.In some embodiments of the present application, the membrane replacing mechanism 22 comprises a storage wheel 223 and a collection wheel 224, the storage wheel 223 is sleeved on the first rotating wheel 221, and the collection wheel 224 is sleeved on the second rotating wheel 222. That is, the storage wheel 223 and the collection wheel 224 can be detachably connected with the first rotating wheel 221 and the second rotating wheel 222, the filter membrane 200 can be wound on the storage wheel 223, and the first rotating wheel 221 can gradually release the filter membrane 200 after the first rotating wheel 221 is installed on the storage wheel 223 and rotates, and the collection wheel 224 can wind the filter membrane 200 when the second rotating wheel 222 rotates. In actual application, the storage wheel 223 can be a separate product, and after the filter membrane 200 on the storage wheel 223 is used up, a new storage wheel 223 can be manually replaced, and the collection wheel 224 wound with the used filter membrane 200 can be recycled, thereby prolonging the replacement cycle of the first filter assembly 20 and facilitating the simplification of the membrane replacing operation, which is convenient for the operation and maintenance of the equipment.

[0052] More specifically, in combination with Figure 6 In some embodiments of the present application, at least one of the first rotating wheel 221 and the second rotating wheel 222 can be connected with the first motor 228 to drive the rotating wheel to rotate, and the first motor 228 is connected with the rotating wheel in the third direction. For example, the first rotating wheel 221 and the second rotating wheel 222 can both be connected with the motor, or the first motor 228 can be arranged only on the rotating wheel corresponding to the collection wheel 224, so that the rotation drives the collection wheel 224 to rotate, the collection wheel 224 winds the filter membrane 200 on the collection wheel 224, the driving force of the collection wheel 224 drives the filter membrane 200 to move in the direction of the collection wheel 224, and then drives the storage wheel 223 to rotate to release the blank filter membrane 200 wound on the storage wheel 223, thereby realizing the automatic replacement and automatic collection of the filter membrane 200 and facilitating the simplification of the structure.

[0053] Further, the membrane replacing mechanism 22 further comprises a tensioning wheel arranged between the storage wheel 223 and the mounting seat 21 and / or between the collection wheel 224 and the mounting seat 21, which can maintain the tension between the collection wheel 224 and the storage wheel 223 on the opposite sides of the filter membrane 200 in the second direction, thereby improving the stability of the membrane replacing mechanism 22 during operation, facilitating the improvement of the transmission efficiency, and keeping the filter membrane 200 in a flat state.

[0054] Further, the tensioning wheel can comprise a plurality of tensioning wheels to improve the structural stability. Specifically, in combination with Figure 4 and Figure 5The tensioning wheel can include a first roller 225, a second roller 226 and a third roller 227. The first roller 225 and the second roller 226 are arranged on opposite sides of the mounting seat 21 along the second direction. The first roller 225 is arranged apart from the holding wheel 223 along the first direction. The second roller 226 and the third roller 227 are arranged apart from the collecting wheel 224 along the first direction. That is, two rollers are arranged between the collecting wheel 224 and the mounting seat 21 along the first direction. The two rollers are arranged apart along the second direction. In this way, the filter membrane 200 can pass through the second roller 226 and then the third roller 227 after being moved out of the mounting seat 21 and then be wound on the collecting wheel 224. The filter membrane 200 forms a "Z" type structure between the second roller 226 and the third roller 227, which can improve the tensioning effect and improve the stability of collecting the filter membrane 200. The first roller 225 arranged between the holding wheel 223 and the mounting seat 21 can also ensure that the filter membrane 200 can stably and smoothly enter the mounting seat 21.

[0055] In combination Figure 3 The bottom of the first roller 225 and the bottom of the second roller 226 are located on the same horizontal line as the mounting position of the filter membrane 200 in the mounting seat 21. In this way, the filter membrane 200 can be smoothly moved into or out of the mounting seat 21. The top of the third roller 227 is located on the same horizontal line as the bottom of the collecting wheel 224. In this way, the stability of the filter membrane 200 when being wound on the collecting wheel 224 can be improved.

[0056] In combination Figure 4 And Figure 5 In some embodiments of the present application, the mounting seat 21 includes a first part 211 and a second part 212. The first part 211 and the second part 212 can separately hold the filter membrane 200. The filter membrane 200 can be held when the system is running to improve the filtering effect. The first part 211 has a first cavity 201. The second part 212 has a second cavity 202. The first cavity 201 and the second cavity 202 are connected to form an airflow channel 210. When the first part 211 and the second part 212 hold the filter membrane 200, the filter membrane 200 can separate the airflow channel 210, so that the gas needs to pass through the filter membrane 200 when passing from the first cavity 201 to the second cavity 202.

[0057] In combination Figure 4In some embodiments of the present application, the filter membrane automatic replacement device further comprises a first pressure detector 23 and a second pressure detector 24, the first pressure detector 23 is communicated with the first cavity 201, and the second pressure detector 24 is communicated with the second cavity 202. Thus, the first pressure detector 23 can detect the gas pressure of the gas in the first cavity 201, i.e. the gas pressure before filtration, and the second pressure detector 24 can detect the gas pressure of the gas in the second cavity 202, i.e. the gas pressure after filtration, so as to determine the use state of the filter membrane 200. For example, when the difference between the pressure value detected by the second pressure detector 24 and the pressure value detected by the first pressure detector 23 is greater than or equal to a certain predetermined value, i.e. the particles accumulated on the filter membrane 200 are relatively more, resulting in a relatively large system pressure, the replacement operation of the filter membrane 200 is performed. At this time, the first part 211 and the second part 212 of the mounting seat 21 can be controlled to separate to loosen the filter membrane 200, the motor drives the collection wheel 224 to rotate to make the filter membrane 200 be collected, and drives the storage wheel 223 to rotate to release the blank filter membrane 200 to the mounting seat 21, and drives the first part 211 and the second part 212 of the mounting seat 21 to move to clamp the filter membrane 200. Therefore, by arranging the first pressure detector 23 and the second pressure detector 24 on the opposite sides of the filter membrane 200, the state before and after the gas filtration can be detected, so as to determine the use state of the filter membrane 200, the detection effect is more accurate, and the filtration efficiency is improved.

[0058] Specifically, in combination with Figure 4 and Figure 6 , the intake system 100 comprises a control panel 10, the first pressure detector 23 comprises a first pipeline and a first pressure sensor, the first end of the first pipeline is communicated with the first cavity 201, and the second end is connected with the first pressure sensor, the first end of the first pipeline is arranged on one side of the control panel 10 along the third direction, and the first pressure sensor can be arranged on the other side of the control panel 10 along the third direction, so as to facilitate the space arrangement. The second pressure detector 24 is the same, the second pressure detector 24 comprises a second pipeline and a second pressure sensor, the second end of the second pipeline is communicated with the second cavity 202, and the second end is connected with the second pressure sensor, the second end of the second pipeline is arranged on one side of the control panel 10 along the third direction, and the second pressure sensor can be arranged on the other side of the control panel 10 along the third direction.

[0059] In combination with Figure 5In some embodiments of the present application, the filter membrane automatic replacement device further comprises a gray scale detector 25 for detecting the color of the filter membrane 200, the gray scale detector 25 is arranged on the first part 211 and communicates with the first cavity 201, and the gray scale detector 25 is opposite to the filter membrane 200 along the first direction, so as to facilitate the detection of the use state of the filter membrane 200, thereby determining whether the membrane replacement operation needs to be performed. Specifically, after the filter membrane 200 is used for a period of time, the color of the filter membrane 200 will become deeper due to the increase of the deposits, and the gray scale detector 25 can detect the color of the filter membrane 200, and when the color of the filter membrane 200 reaches a predetermined value, the filter membrane 200 replacement operation is performed.

[0060] In combination Figure 4 The air intake system 100 can simultaneously have a pressure detector for detecting the pressure and a gray scale detector 25 for detecting the color of the filter membrane 200, and when one of the pressure detection value and the gray scale detection value reaches a preset value, the membrane replacement mechanism 22 is controlled to perform the membrane replacement operation, so as to improve the reliability. Since the colors and other specifications of different filter membranes 200 are different, the adaptability of the air intake system 100 can be improved by using multiple detection devices. Alternatively, the preset value can be set and adjusted according to different specifications of the filter membrane 200, for example, when the filter membrane 200A is installed, the preset membrane replacement parameter is adjusted to a, and when the filter membrane 200B is installed, the preset membrane replacement parameter is adjusted to b, so as to improve the adaptability. Alternatively, the preset value when the filter membrane 200 is replaced is selected according to the parameters and specifications of the filter membrane 200.

[0061] In combination Figure 5 and Figure 7 In some embodiments of the present application, the second part 212 comprises a first half 2121, a second half 2122 and an elastic member 2123, the first half 2121 and the second half 2122 can be connected along the first direction by a fixing member 2124, and the elastic member 2123 is supported between the first half 2121 and the second half 2122. Therefore, the elastic member 2123 can be supported between the first half 2121 and the second half 2122, the elastic member 2123 extends along the first direction, and the elastic force of the elastic member 2123 can provide a supporting force for the second part 212 when the second part 212 clamps the filter membrane 200, thereby improving the clamping effect of the mounting seat 21 and facilitating the guarantee that all the gas passes through the filter membrane 200.

[0062] Further, in some embodiments of the present application, in combination Figure 6The mounting base 21 comprises a second motor 214, and the first part 211 and / or the second part 212 are connected with the second motor 214. The second motor 214 can be used to drive the first part 211 or the second part 212 to move close to or away from each other, so as to drive the first part 211 or the second part 212 to clamp or release the filter membrane 200. Specifically, the first part 211 and the second part 212 can be connected with the motor, or one of them is connected with the motor. According to the mounting base 21 of the embodiment of the present application, the second motor 214 is in transmission connection with the second part 212 along the third direction, and drives the second part 212 to move close to or away from the first part 211 along the first direction. Specifically, the air inlet system 100 further comprises a fixed plate 213, and the second motor 214 is fixed on the control panel 10 through the fixed plate 213, which is beneficial to improve the stability of the connection between the second motor 214 and the mounting base 21.

[0063] In combination Figure 5 In some embodiments of the present application, the second part 212 is provided with a support net 215 for placing the filter membrane 200, and a sealing member 216. The support net 215 can improve the stability of the filter membrane 200 after being placed, and can also prevent the filter membrane 200 from being damaged when the pressure in the air duct is too high. The sealing member 216 forms a sealing structure between the outer periphery of the support net 215 and the inner wall of the second part 212, which can improve the sealing effect, prevent gas leakage and thus improve the filtering effect, and improve the stability of the structure.

[0064] In combination Figure 1 And Figure 2 In some embodiments of the present application, the air inlet system 100 further comprises a first check valve 31, which is arranged in the first air duct 110 and located downstream of the first filter assembly 20. The air inlet system 100 further comprises a second check valve 32, which is arranged in the second air duct 120 and located downstream of the second filter assembly 40. The first check valve 31 and the second check valve 32 can prevent gas backflow. Specifically, the first check valve 31 is arranged between the first air duct 110 and the air outlet 105, and the second check valve 32 is arranged between the second air duct 120 and the air outlet 105. The first check valve 31 allows gas to be unidirectionally conducted from the downstream of the first filter assembly 20 to the air outlet 105, and the second check valve 32 allows gas to be unidirectionally conducted from the downstream of the second filter assembly 40 to the air outlet 105, which improves the stability and reliability of the operation of the air inlet system 100.

[0065] According to the detection equipment of the embodiment of the present application, the air inlet system 100 can realize automatic replacement of the filter membrane 200 of the detection equipment, and the detection equipment can work uninterruptedly during the replacement of the filter membrane, which is beneficial to improve the working efficiency and filtering effect of the detection equipment, and reduce the cost of manual maintenance.

[0066] In combinationFigure 1 and Figure 2 According to the control method of the air intake system 100 of the detection equipment, the method is used for the air intake system 100, and the method comprises the following steps: obtaining a filter membrane 200 replacement signal of a first filter assembly 20; controlling a pipeline assembly to disconnect the first air passage 110 and connect the second air passage 120 according to the filter membrane 200 replacement signal, and controlling a filter membrane automatic replacement device to replace the filter membrane 200; and after determining that the filter membrane automatic replacement device completes the replacement of the filter membrane 200, controlling the pipeline assembly to connect the first air passage 110 and disconnect the second air passage 120. Specifically, because the expected filtering effect cannot be achieved when the filter membrane is replaced, the pipeline assembly can automatically disconnect the first air passage 110 and connect the second air passage 120 when the filter membrane of the first filter assembly 20 is replaced, so that the gas can enter the second air passage 120 and be filtered by the second filter assembly 40, and when the replacement of the filter membrane of the first filter assembly 20 is completed, the pipeline assembly disconnects the second air passage 120 and connects the first air passage 110, so that the first filter assembly 20 is used for filtering.

[0067] More specifically, because the first filter assembly 20 has the filter membrane automatic replacement device that can automatically replace the filter membrane, the first air passage 110 can be used as the main passage for filtering the gas, and when the filter membrane of the first filter assembly 20 is replaced, the pipeline assembly is controlled to switch the gas to the second air passage 120 according to the filter membrane 200 replacement signal, so that the detection equipment can still continuously perform the filtering work during the replacement of the filter membrane.

[0068] According to the control method of the air intake system 100 of the detection equipment, the switching between the first air passage 110 and the second air passage 120 of the pipeline can be automatically controlled by judging the filter membrane 200 replacement signal of the first filter assembly 20, so that the detection equipment can continuously perform the filtering work during the replacement of the filter membrane, and the filtering effect is improved.

[0069] In particular, in combination with the foregoing, when the filter membrane 200 of the first filter assembly 20 reaches the replacement standard, the filter membrane 200 replacement signal can be sent to the switching device 13, the mounting seat 21 and the membrane replacement mechanism 22 at the same time, the switching device 13 of the pipeline assembly disconnects the inlet 103 and the first outlet 101, connects the inlet 103 and the second outlet 102, and the second outlet 102 is connected to the inlet of the second filter assembly 40. The first part 211 and the second part 212 of the mounting seat 21 are separated to loosen the filter membrane 200, the collecting wheel 224 of the membrane replacement mechanism 22 rotates to wind the used filter membrane 200 into the collecting wheel 224, the storage wheel 223 releases the blank filter paper to the predetermined position of the mounting seat 21, the first part 211 and the second part 212 of the mounting seat 21 clamp the filter membrane 200, the automatic replacement of the filter membrane 200 is completed, and a completion signal is sent to the switching device 13, the switching device 13 disconnects the inlet 103 and the second outlet 102, connects the inlet 103 and the first outlet 101, and the first outlet 101 is connected to the inlet of the first filter assembly 20.

[0070] Further, in combination with Figure 6 , the air intake system 100 can further include a grating 51 and a light coupling 52, which can be used to determine the distance or size of the movement of the filter membrane 200 to improve the accuracy of automatic membrane replacement. Specifically, the grating 51 can be connected to the first roller 225 along the third direction, and the light coupling 52 is connected to the grating 51 along the second direction, so as to realize accurate control of the size of the movement of the filter membrane 200.

[0071] Alternatively, the first motor 228 connected to the collecting wheel 224 or the second rotating wheel 222 can also be a stepping motor, which can accurately control the position and speed of the movement of the filter membrane 200 to improve the accuracy of automatic membrane replacement. In addition, the blank filter membrane 200 wound on the storage wheel 223 can be in a continuous form, or the blank filter membrane 200 can have a predetermined size, and two blank filter membranes 200 can have an interval. By inputting the size of the filter membrane 200 and the size of the interval into the control program, when applied, the stepping motor moves the filter membrane 200 winding according to the predetermined size, so that the new filter membrane 200 can be located at the predetermined position.

[0072] In combination with Figure 1In some embodiments of the present invention, the intake system 100 includes a pressure detector, and the control method further includes: the intake system 100 acquiring an initial pressure parameter value and a current pressure parameter value of the filter membrane 200; if the difference between the initial pressure parameter value and the current pressure parameter value is greater than or equal to a preset value, then generating a filter membrane 200 replacement signal for the first filter assembly 20. Specifically, whether the filter membrane 200 needs to be replaced can be determined by detecting the pressure. When the pressure value reaches a predetermined value, the automatic filter membrane replacement device is controlled to automatically replace the membrane and send the replacement signal to the management component. More specifically, the initial pressure parameter value of the filter membrane 200 is P. IV P IV P2 is the difference between the detection value P2 of the second pressure detector 24 and the detection value P1 of the first pressure detector 23 when a blank filter membrane 200 is placed in the airflow channel 210. That is, P2 - P1 = P IV

[0073] During equipment operation, as described above, since the first pressure detector 23 and the second pressure detector 24 are respectively connected to the first cavity 201 and the second cavity 202, the first pressure detector 23 and the second pressure detector 24 can monitor the pressure value in the airflow channel 210 in real time. If the detected pressure of the first pressure detector 23 is P3, and the detected pressure value of the second pressure detector 24 is P4, the difference between P4 and P2 is the current pressure value in the airflow channel 210. CV (i.e., P4 - P2 = P) CV ), P CV With the filter membrane 200 initial pressure value P IV When the difference is greater than or equal to 1.5 kPa (kilopascal), that is, P CV - P IV ≥1.5Kpa, control the automatic replacement system of filter membrane 200 to replace the filter. Specifically, since the pressure of the blank membrane of different filter membranes 200 may be different, subtracting the initial pressure value from the current pressure value can improve the accuracy of pressure detection and help determine the usage status of filter membrane 200.

[0074] In some embodiments of the present application, the air intake system 100 comprises a gray scale detector 25, and the control method further comprises: the air intake system 100 acquires an initial gray scale parameter value L0 and a current gray scale parameter value L1 of the filter membrane 200; if the initial gray scale parameter value L0 and the current gray scale parameter value L1 satisfy L1≤L0 / 2, a filter membrane 200 replacement signal of the first filter assembly 20 is generated. Specifically, the brightness of the blank filter membrane 200 is large, and when the gray scale detector 25 detects, the test value is large. After the filter membrane 200 is used for a period of time, impurities are attached to the filter membrane 200, which causes the color of the filter membrane 200 to become dark, and the value detected by the gray scale detector 25 will become small. When the value L1 detected by the gray scale detector 25 is less than or equal to half of the blank filter gray detection value L0, the filter membrane automatic replacement device is controlled to perform membrane replacement.

[0075] Since the gray scale values of different filter membranes 200 in the blank state are different, the difference between the current gray scale and the initial gray scale of the filter membrane 200 is obtained for judgment, which can improve the accuracy of the filter membrane 200 usage state judgment.

[0076] Further, when the air intake system 100 is provided with a pressure detector and a gray scale detector 25 at the same time, when one of them satisfies the filter membrane 200 replacement condition, the filter membrane automatic replacement device is controlled to perform membrane replacement.

[0077] In some embodiments of the present application, the method further comprises: acquiring a start signal of the detection equipment air intake system 100; and controlling the filter membrane automatic replacement device to replace the filter membrane 200 according to the start signal, so as to ensure the filtering effect.

[0078] The detection equipment air intake system 100 and its control method of one specific embodiment of the present application are described below with reference to the accompanying drawings.

[0079] The environmental air quality monitoring network system is the defense line of the environmental air in China, and is the thermometer of the ecological environment measurement in China. There are nearly thirty thousand environmental air quality monitoring systems in China, and the daily maintenance work is professional and complex; a large amount of manpower cost is needed to maintain the system.

[0080] Specifically, the maintenance work includes equipment calibration, sampling probe cleaning, membrane replacement and the like. The current state is that the equipment calibration can be performed remotely through the network, the probe cleaning period can be extended; the membrane replacement work needs the on-site operation of the operation and maintenance personnel every week. Each person maintains one site every day, and maintains three sites every week. The sites are widely distributed all over the country, and the consumption of manpower and material resources is great.

[0081] The air station sampling system particle filter film generally uses a 47um aperture PEFT material air-permeable membrane. The SO2, NOx, CO, and O3 analyzers use filter membranes to filter particles in the air inlet, which is directly in contact with the outside air. Therefore, after a period of use, the particles deposited on the filter membrane 200 increase the system pressure, affecting the system flow pressure value. At this time, a new filter membrane 200 is replaced. The specific operation process is performed according to the following steps. The air filter fixing cover is unscrewed; the air filter film fixer (the plastic joint and the air inlet pipe are still fixed thereon) is removed; and a clean filter membrane is replaced. The filter membrane is in the form of a sheet, and one sheet is used each time. According to the national operation and maintenance requirements, the air filter of each device needs to be replaced once a week.

[0082] To extend the replacement period of the analyzer filter membrane from once a week to once a year or even longer, an automatic filter membrane replacement device is added between the sampling manifold and the analyzer as a primary filter. After being sucked into the sampling pipe by the sampling fan, the ambient air passes through the automatic filter membrane replacement device, removes dust, and then enters each gaseous analyzer for detection.

[0083] According to the air inlet system 100 of the embodiment of the present application, the entering gas is divided into two paths. When normal sampling is performed, the gas passes through the three-way electromagnetic valve and then passes through the roll filter paper to reach the outlet. When the pressure detector detects that the pressure difference between the two ends of the filter paper reaches a set threshold value or the gray scale detector 25 checks that the color of the filter paper becomes dark to a set threshold value, the filter paper replacement operation is performed. At this time, the three-way electromagnetic valve is switched to the fixed filter. At this time, the gas passes through the filter membrane of the fixed filter for replacement. The roll filter membrane moves the used filter membrane to the left and moves the blank filter membrane to the sampling port. After the blank filter membrane is replaced, the three-way electromagnetic valve is switched back to the gas path where the roll filter membrane is located, and the time consumption is 30s. In this way, the filtering effect is ensured, and the period of the maintenance personnel going to the site to replace the membrane is extended, ensuring the replacement period of one year.

[0084] The specific operation process is as follows:

[0085] 1. The device is started. At this time, the three-way electromagnetic valve is switched, so that the gas flows out from the fixed filter channel. The first time the paper tape is replaced, the pressure difference P of the blank paper tape is recorded, and the gray scale detection value L0 is recorded. The three-way electromagnetic valve is switched to the main channel or the first gas channel 110 (the replacement process takes 30s). IV

[0086] 2. Continuous air suction.

[0087] 3. The pressure difference sensor (ALL Sensors 5PSI-D1 4V-MINI) detects that the pressure difference value of the paper tape exceeds P CV ​≥1.5KPa, or the gray scale detector 25 (consisting of a white light diode and a photoresistor) detects that the brightness is L1≤1 / 2*L0, the second paper tape replacement is carried out.

[0088] 4. Switch the three-way electromagnetic valve to make the gas flow out from the fixed filter channel. The second paper tape replacement is carried out, and the pressure difference P of the blank paper tape, the gray scale detection value L0, and the switching of the three-way electromagnetic valve to the main channel over the first gas channel 110 (the membrane replacement process takes 30s) are recorded. IV

[0089] Optionally, the automatic filter membrane 200 replacement device of the first filter assembly 20 can be a roll-type filter paper or a filter membrane 200 automatic replacement module. The filter membrane 200 automatic replacement module includes a plate body, and a plurality of filter modules are arranged on the plate body. The plurality of filter modules are connected in parallel, and the plurality of filter modules include a plurality of filter membranes 200 connected in series. Thus, the filter membrane 200 automatic replacement module can be connected to a plurality of detection devices, and each filter module corresponds to one detection device, thereby improving the detection efficiency.

[0090] For example, the filter membrane 200 automatic replacement module can include 16 filter membranes, which are divided into four filter modules and connected to four gas analyzers, i.e., each analyzer corresponds to four filter membranes. The device is linked with the quality control instrument to automatically replace the filter membranes once a week. Meanwhile, each analyzer is provided with a filter to form a secondary filter. In this way, the filtering effect is ensured, and the period of replacing the filter membranes by the maintenance personnel is extended to ensure one-month unattended operation.

[0091] In the description of the present application, it should be understood that the terms "length", "upper", "lower", "front", "back", "left", "right", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0092] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0093] ​In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0094] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0095] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0096] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An intake system (100) of a detection device, characterized in that, The application relates to a pipeline assembly, comprising: a pipeline assembly having a first air duct (110) and a second air duct (120) in parallel with each other, the pipeline assembly being configured to control air flow to selectively pass through the first air duct (110) and / or the second air duct (120); a first filter assembly (20) arranged in the first air duct (110), the first filter assembly (20) comprising a filter membrane automatic replacement device; a second filter assembly (40) arranged in the second air duct (120); the filter membrane automatic replacement device comprises a mounting seat (21) and a membrane replacement mechanism (22), the mounting seat (21) has an air flow channel (210) extending in a first direction, the membrane replacement mechanism (22) is configured to drive a filter membrane (200) to move in a second direction to control different positions of the filter membrane (200) to separate the air flow channel (210), the first direction is perpendicular to the second direction; the membrane replacement mechanism (22) comprises a first rotating wheel (221) and a second rotating wheel (222), the first rotating wheel (221) and the second rotating wheel (222) are arranged on opposite sides of the mounting seat (21) in the second direction, and the axes of the first rotating wheel (221) and the second rotating wheel (222) extend in a third direction, the first direction, the second direction and the third direction are perpendicular to each other; the mounting seat (21) comprises a first part (211) and a second part (212), the first part (211) and the second part (212) can separately clamp the filter membrane (200); the first part (211) has a first cavity (201), the second part (212) has a second cavity (202), and the first cavity (201) and the second cavity (202) are communicated to form the air flow channel (210), wherein the filter membrane automatic replacement device further comprises a first pressure detector (23) and a second pressure detector (24), the first pressure detector (23) is communicated with the first cavity (201), and the second pressure detector (24) is communicated with the second cavity (202).

2. The intake system (100) of a detection device according to claim 1, characterized in that the pipeline assembly comprises a reversing device (13) having an inlet (103), a first outlet (101) and a second outlet (102), the reversing device (13) is configured to control the inlet (103) to selectively connect the first outlet (101) and / or the second outlet (102), the first outlet (101) is connected to the inlet of the first filter assembly (20), and the second outlet (102) is connected to the inlet of the second filter assembly (40).

3. The intake system (100) of a detection device according to claim 1, characterized in that The film replacing mechanism (22) comprises a holding wheel (223), a collecting wheel (224) and a tensioning wheel, the holding wheel (223) is sleeved on the first rotating wheel (221), the collecting wheel (224) is sleeved on the second rotating wheel (222), and the tensioning wheel is arranged between the holding wheel (223) and the mounting base (21) and / or between the collecting wheel (224) and the mounting base (21); and / or The first rotating wheel (221) and / or the second rotating wheel (222) is connected with a first motor (228) in the third direction.

4. The intake system (100) of a detection device according to claim 3, characterized in that The tensioning wheel comprises a first roller (225), a second roller (226) and a third roller (227), the first roller (225) and the second roller (226) are arranged on opposite sides of the mounting base (21) in the second direction, the first roller (225) is arranged in the first direction and spaced apart from the holding wheel (223), and the second roller (226) and the third roller (227) are arranged in the first direction and spaced apart from the collecting wheel (224).

5. The air intake system (100) of the detection device according to claim 1, characterized in that, The automatic filter membrane replacing device further comprises a gray scale detector (25) for detecting the color of the filter membrane (200), the gray scale detector (25) is arranged on the first part (211) and communicates with the first cavity (201), and the gray scale detector (25) is opposite to the filter membrane (200) in the first direction.

6. The air intake system (100) of the detection equipment according to claim 1, characterized in that, The second part (212) comprises a first half (2121), a second half (2122) and an elastic member (2123), the first half (2121) and the second half (2122) are connected in the first direction, and the elastic member (2123) is supported between the first half (2121) and the second half (2122); and / or The mounting base (21) comprises a second motor (214), and the first part (211) and / or the second part (212) is connected with the second motor (214); and / or The second part (212) is provided with a support net (215) for placing the filter membrane (200) and a sealing member (216), and the sealing member (216) forms a sealing structure between the outer periphery of the support net (215) and the inner wall of the second part (212).

7. The air intake system (100) of a detection device according to claim 1, characterized in that The second filter assembly (40) is a fixed filter assembly; and / or The air intake system (100) further comprises a first check valve (31), the first check valve (31) is arranged in the first air duct (110) and located downstream of the first filter assembly (20); and / or the air intake system (100) further comprises a second check valve (32), the second check valve (32) is arranged in the second air duct (120) and located downstream of the second filter assembly (40).

8. A detection device, characterized by The air intake system (100) comprises the air intake system (100) according to any one of claims 1-7.

9. A control method of an intake system (100) of a detection device, for the intake system (100) according to any one of claims 1-7, characterized in that, The method comprises: obtaining a filter membrane (200) replacing signal of the first filter assembly (20); According to the filter membrane (200) replacement signal, the pipeline assembly is controlled to disconnect the first air passage (110) and connect the second air passage (120), and the filter membrane automatic replacement device is controlled to replace the filter membrane (200); After determining that the filter membrane automatic replacement device completes the filter membrane (200) replacement, the pipeline assembly is controlled to connect the first air passage (110) and disconnect the second air passage (120).

10. The control method of the air intake system (100) of the detection equipment according to claim 9, wherein the air intake system (100) comprises a pressure detector, and the control method further comprises: the air intake system (100) acquires an initial pressure parameter value and a current pressure parameter value of the filter membrane (200); If the difference between the initial pressure parameter value and the current pressure parameter value is greater than or equal to a preset value, a filter membrane (200) replacement signal of the first filter assembly (20) is generated; and / or The air intake system (100) comprises a gray scale detector (25), and the control method further comprises: the air intake system (100) acquires an initial gray scale parameter value L0 and a current gray scale parameter value L1 of the filter membrane (200); If the initial gray scale parameter value L0 and the current gray scale parameter value L1 satisfy L1≤L0 / 2, a filter membrane (200) replacement signal of the first filter assembly (20) is generated. The method further comprises:

11. The control method of the intake system (100) of the detection apparatus according to claim 10, characterized by, acquiring a start signal of the air intake system (100) of the detection equipment; According to the start signal, the filter membrane automatic replacement device is controlled to replace the filter membrane (200). ​

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