Portable alpha-beta aerosol monitoring equipment

Abstract

A portable alpha-beta aerosol monitoring device is characterized by comprising a frame unit, a display unit, a detection unit, a sampling unit, a gas outlet unit, a power supply unit and a control unit. According to the compact layout design, the rationality of spatial layout is improved, meanwhile, the gravity center moves downwards, and the placement stability is improved; according to the mechanism for sealing the gas circuit, the electromagnetic valve which is light in weight, small in size and easy to control is adopted instead of a conventional electric push rod; according to the utility model, the calibration method of the detection unit is optimized, and the vertical displacement controlled by the electromagnetic valve can support online calibration of the detection unit instead of calibration after disassembly.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear radiation monitoring and protection, in particular to a portable αβ aerosol monitoring device. Background Art

[0002] With the development and application of nuclear technology, monitoring of radioactive materials has become an indispensable part of nuclear operations. Various radioactive substances will exist in the air of nuclear sites such as nuclear technology application sites and nuclear accident areas. These radioactive substances will attach to solid or liquid particles suspended in the air to form radioactive aerosols. Radioactive aerosols can attach to the surface of objects through precipitation, irradiate the human body and cause damage; they can also enter the body through contact with human mucous membranes, causing human damage through biochemical toxicity and radiation effects to form ionizing radiation. Ionizing radiation cannot be directly felt by humans, so it is necessary to monitor the air of nuclear sites for radioactive aerosols in real time, and use monitoring equipment to indicate and measure the radioactive radiation situation at the nuclear site.

[0003] Currently available aerosol monitoring equipment can be divided into two types: filter paper sampling and filter paper tape sampling. Filter paper sampling requires manual replacement of filter paper after sampling and detection. Frequent replacement of filter paper will increase the chance of radiation exposure for operators, and the detection efficiency of manual replacement of filter paper is low. Aerosol monitoring equipment based on filter paper tape sampling has more components and a more complex design. Existing equipment is large in size and weighs more than 20kg, which is not convenient for one person to carry and use; at the same time, the detection unit needs to be removed for regular calibration, which has many operating procedures, low efficiency, and affects the calibration accuracy after reinstallation. Utility Model Content

[0004] In view of the above existing technical problems, the utility model provides a portable αβ aerosol monitoring device, which is characterized by comprising a frame unit, a display unit, a detection unit, a sampling unit, an air outlet unit, a power supply unit, and a control unit;

[0005] The frame unit comprises a mainframe front cover, a mainframe middle shell, a mainframe back cover, a folding handle, an air inlet pipe cover, and an air outlet nozzle. The mainframe middle shell is connected to the mainframe front cover in front, the mainframe middle shell is connected to the mainframe back cover in the back, the mainframe middle shell is installed with a folding handle, the mainframe middle shell is provided with an air inlet nozzle, an air inlet pipe cover is provided thereon, and an air outlet nozzle is provided on the side of the mainframe middle shell. Sealing pads are provided between the mainframe front cover and the mainframe middle shell, between the mainframe middle shell and the mainframe back cover, between the air inlet pipe cover and the mainframe middle shell, and between the air outlet nozzle and the mainframe middle shell, and are all fastened and sealed by screws;

[0006] The display unit includes a display frame, a display screen, and a quick-release lock. The display frame is connected to the front cover of the host by a hinge. The display screen is fixed on the display frame. A sealing gasket is provided between the display frame and the display screen, and is fastened and sealed by screws. The display frame is provided with a quick-release lock.

[0007] The detection unit comprises a detection upper shell, a detection lower shell, an air intake pipe, and a PIPS part. The detection lower shell is connected to the detection upper shell, and the air intake pipe is connected to the detection upper shell. A sealing ring is provided between the detection upper shell and the detection lower shell, and between the air intake pipe and the detection upper shell, and is fastened and sealed by screws. The PIPS part is placed inside the cavity formed by the detection upper shell and the detection lower shell, and rubber is placed at the PIPS part for shock absorption;

[0008] The sampling unit includes a paper receiving box, a paper storage wheel, a filter paper tray, a tray spring, a tray fixing frame, a tray air outlet joint, an electromagnet, a motor, a driving shaft, and filter paper. The mainframe middle shell is connected to the paper receiving box, a sealing gasket is arranged between the paper receiving box and the mainframe middle shell, and is fastened and sealed by screws. A motor is arranged in the paper receiving box, the motor is connected to a driving shaft, one end of the filter paper is connected to the driving shaft, a paper storage wheel is arranged in the mainframe middle shell, the other end of the filter paper is arranged on the paper storage wheel, a tray fixing frame is fixed in the mainframe middle shell by screws, a sliding bearing and a plurality of tray springs are arranged between the tray fixing frame and the filter paper tray, and a speed code disk and a photoelectric switch are arranged at the end of the paper storage wheel;

[0009] The air outlet unit includes an air pump, a flow meter, a connecting ring, and an air inlet joint of the flow meter. The air pump is connected to the air pump through screws in the main engine shell. The air pump and the flow meter are connected and fixed by a connecting ring. The flow meter is provided with a flow meter air inlet joint. The flow meter air inlet joint is connected to the tray air outlet joint by a hose. A sealing gasket is provided between the main engine shell and the air pump. A sealing ring and a sealing gasket are provided inside the connecting ring. A sealing ring is provided between the flow meter air inlet joint and the flow meter. The sealing ring and the sealing gasket are both fixed with screws to achieve fastening and sealing.

[0010] The power supply unit includes a power supply shell, a power supply module, and a buffer cotton. The mainframe middle shell is connected to the power supply shell by screws. The power supply shell is provided with a power supply module, and the contact surfaces of the power supply module are provided with a buffer cotton.

[0011] The control unit includes a main board, a pump control board, and a digital multi-channel control board, and the main board, the pump control board, and the digital multi-channel control board are all installed in the main unit shell by screws;

[0012] The host front cover, host middle shell and host rear cover are all made of light alloy metal in one piece;

[0013] The display screen adopts a touch display screen;

[0014] The sampling unit, the detection unit and the display unit are located above the middle shell of the main machine, and the power supply unit and the air outlet unit are located below the middle shell of the main machine.

[0015] Beneficial effects of the utility model:

[0016] The utility model aims at the shortcomings of the existing technology and proposes a portable αβ aerosol monitoring device. The utility model can realize real-time monitoring while sampling radioactive aerosols, and the response time is short; the device has a compact layout, which improves the rationality of the spatial layout while realizing the downward shift of the center of gravity and improving the placement stability; the light-weight, small-sized, and simple-to-control electromagnet is used to achieve the air path sealing at the filter paper, and the weight of the whole device is less than 8kg, and the overall size is compact, which is convenient for single-person carrying and use.

[0017] The core of the portable αβ aerosol monitoring device described in the utility model is a complete and integrated closed gas path composed of a detection unit, a sampling unit, and an air outlet unit through assembly. The detection unit is located above the filter paper of the sampling unit. By optimizing the uniformity of the gas path, the influence of impurities such as dust in the sampled gas on α detection is reduced. The closed gas path can prevent the sampled gas from leaking into the equipment cavity after entering the gas path, so that the sampled gas can be completely filtered through the filter paper before being discharged from the equipment, ensuring the accuracy of detection and the safety of the detection equipment. The compact layout design is that the gas path is from top to bottom, and the sampling unit, the detection unit, and the display unit are located above the entire device, which is convenient for replacing the filter paper and display observation; while the heavy power supply unit, the air outlet unit, etc. are located below, while improving the rationality of the spatial layout, the center of gravity is moved downward, and the placement stability is improved. Lightweight and small-sized accessories such as lightweight electromagnets are used to minimize the overall weight and volume of the equipment, making the equipment portable. At the same time, the vertical displacement of the electromagnet is controlled to support the online calibration of the detection unit without the need for complex parts disassembly.

[0018] The frame unit of the utility model is used as a structural main body to carry and fix other units. In order to control the size and weight of the portable αβ aerosol monitoring device, the frame unit is processed with light alloy metal; the outer surface of the frame unit is coated, and the sealing design is adopted between the external assembly parts to make the inside of the device cavity opaque and airtight, forming a closed environment to prevent the external ambient light and particles from affecting the detection results. The top of the frame unit is equipped with a folding handle for easy single-person carrying. The display unit is fixed on the frame unit. The device can be directly operated through the display screen using a touch screen. The display unit adopts a flip cover method and can be opened from the outside of the device. The filter paper can be replaced through the opening after opening. The sampling unit is installed inside the frame unit and connected to the detection unit through assembly to form an air intake path. The sampling filter paper in the sampling unit is used to filter the radioactive aerosol in the air intake path. The detection unit located above the filter paper detects while filtering, realizing real-time monitoring; the sampling unit uses a solenoid valve vertical displacement to control the separation of the filter paper tray and the filter paper during the paper replacement process. The air outlet unit is installed inside the frame unit and connected to the sampling unit through a hose to discharge the filtered air to the outside of the device. The detection unit, sampling unit, and gas outlet unit are assembled into a complete closed gas circuit, so that the sampled gas enters the gas circuit and is filtered well before being discharged from the equipment, ensuring the accuracy of detection and the safety of the equipment. The power supply unit is installed inside the frame unit to provide power for the portable αβ aerosol monitoring equipment. The control unit is fixedly connected to the frame unit to process the feedback input signals of each unit and send control instructions to each module, and can remotely interact with other devices through the wireless data transmission module.

[0019] The advantages of the utility model are: 1. The compact layout design improves the rationality of the spatial layout while achieving the downward shift of the center of gravity and improving the placement stability; 2. The mechanism design for gas path sealing adopts a solenoid valve with light weight, small size and simple control, rather than a conventional electric push rod; 3. The calibration method of the detection unit is optimized, and the vertical displacement controlled by the solenoid valve can support the online calibration of the detection unit, rather than disassembling it for calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the frame unit structure of a portable αβ aerosol monitoring device of the utility model;

[0021] Figure 2 This is a schematic diagram of the display unit structure of a portable αβ aerosol monitoring device of the utility model;

[0022] Figure 3 This is a schematic diagram of the detection unit structure of a portable αβ aerosol monitoring device of the utility model;

[0023] Figure 4This is a schematic diagram of the sampling unit structure of a portable αβ aerosol monitoring device of the utility model;

[0024] Figure 5 This is a partial structural perspective view of a sampling unit of a portable αβ aerosol monitoring device of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of an air outlet unit of a portable αβ aerosol monitoring device of the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of a power supply unit of a portable αβ aerosol monitoring device of the utility model;

[0027] Figure 8 This is a schematic diagram of the control unit structure of a portable αβ aerosol monitoring device of the utility model; as shown in the figure: 1, frame unit, 11, main unit front cover, 12, main unit middle shell, 13, main unit back cover, 14, folding handle, 15, air inlet cover, 16, air outlet nozzle, 2, display unit, 21, display frame, 22, display screen, 23, quick unlock, 3, detection unit, 31, detection upper shell, 32, detection lower shell, 33, air inlet, 4, sampling unit, 41, paper collection box, 4 2. Paper storage wheel, 43. Filter paper tray, 44. Tray spring, 45. Tray fixing frame, 46. Tray air outlet connector, 47. Electromagnet, 48. Motor, 49. Driving shaft, 410. Filter paper, 5. Air outlet unit, 51. Air pump, 52. Flow meter, 53. Connecting ring, 54. Flow meter air inlet connector, 6. Power supply system, 61. Power supply housing, 62. Power supply module, 7. Control system, 71. Main board, 72. Pump control board, 73. Digital multi-channel control board. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] Example 1

[0032] As shown in the figure, a portable αβ aerosol monitoring device is characterized by comprising a frame unit, a display unit, a detection unit, a sampling unit, an air outlet unit, a power supply unit, and a control unit;

[0033] The frame unit 1 includes a mainframe front cover 11, a mainframe middle shell 12, a mainframe back cover 13, a folding handle 14, an air inlet pipe cover 15, and an air outlet nozzle 16. The mainframe middle shell 12 is connected to the mainframe front cover 11 in front, and the mainframe middle shell 12 is connected to the mainframe back cover 13 in the back. The mainframe middle shell 12 is provided with a folding handle 14. The mainframe middle shell 12 is provided with an air inlet nozzle, and an air inlet pipe cover 15 is provided thereon. The mainframe middle shell 12 is provided with an air outlet nozzle 16 on the side. Sealing pads are provided between the mainframe front cover 11 and the mainframe middle shell 12, between the mainframe middle shell 12 and the mainframe back cover 13, between the air inlet pipe cover 15 and the mainframe middle shell 12, and between the air outlet nozzle 16 and the mainframe middle shell 12, and they are all fixed and sealed by screws.

[0034] The display unit 2 includes a display frame 21, a display screen 22, and a quick-release lock 23. The display frame 21 is connected to the host front cover 11 by a hinge. The display screen 22 is fixed to the display frame 21. A sealing gasket is provided between the display frame 21 and the display screen 22, and the fastening and sealing are achieved by screw fixation. The display frame 21 is provided with a quick-release lock 23;

[0035] The detection unit 3 includes a detection upper shell 31, a detection lower shell 32, an air intake pipe 33, and a PIPS part. The detection lower shell 32 is connected to the detection upper shell 31, and the detection upper shell 31 is connected to the air intake pipe 33. A sealing ring is provided between the detection upper shell 31 and the detection lower shell 32, and between the air intake pipe 33 and the detection upper shell 31, and is fastened and sealed by screws. The PIPS part is placed inside the cavity formed by the detection upper shell 31 and the detection lower shell 32, and rubber is placed at the PIPS part for shock absorption.

[0036] The sampling unit 4 includes a paper receiving box 41, a paper storage wheel 42, a filter paper tray 43, a tray spring 44, a tray fixing frame 45, a tray air outlet joint 46, an electromagnet 47, a motor 48, a driving shaft 49, and a filter paper 410. The mainframe middle shell 12 is connected to the paper receiving box 41, a sealing gasket is arranged between the paper receiving box 41 and the mainframe middle shell 12, and fastening and sealing are achieved by screw fixation. A motor 48 is arranged in the paper receiving box 41, and the motor 48 is connected to the driving shaft 49, and one end of the filter paper 410 is connected to the driving shaft 49, and the mainframe middle shell 12 is provided with a paper storage wheel 42, and the other end of the filter paper 410 is arranged on the paper storage wheel 42, and a tray fixing frame 45 is fixed in the mainframe middle shell 12 by screws, and a sliding bearing and a plurality of tray springs 44 are arranged between the tray fixing frame 45 and the filter paper tray 43, and a speed measuring code disk and a photoelectric switch are arranged at the end of the paper storage wheel 42;

[0037] The air outlet unit 5 includes an air pump 51, a flow meter 52, a connecting ring 53, and a flow meter air inlet connector 54. The air pump 51 is connected to the mainframe middle shell 12 through screws. The air pump 51 and the flow meter 52 are connected and fixed by a connecting ring 53. The flow meter 52 is provided with a flow meter air inlet connector 54. The flow meter air inlet connector 54 is connected to the tray air outlet connector 46 by a hose. A sealing gasket is provided between the mainframe middle shell 12 and the air pump 51. A sealing ring and a sealing gasket are provided inside the connecting ring 53. A sealing ring is provided between the flow meter air inlet connector 54 and the flow meter 52. The sealing ring and the sealing gasket are fixed by screws to achieve fastening and sealing.

[0038] The power supply unit 6 includes a power supply housing 61, a power supply module 62, and a buffer cotton. The main body middle shell 12 is connected to the power supply housing 61 by screws. The power supply housing 61 is provided with a power supply module 62. The contact surfaces of the power supply module 62 are provided with a buffer cotton.

[0039] The control unit 7 includes a main board 71, a pump control board 72, and a digital multi-channel control board 73, which are all mounted in the mainframe middle shell 12 by screws;

[0040] The host front cover 11, the host middle shell 12, and the host rear cover 13 are all made of light alloy metal in one piece;

[0041] The display screen 22 is a touch screen;

[0042] The sampling unit, the detection unit, and the display unit are located above the mainframe middle shell 12 , and the power supply unit and the air outlet unit are located below the mainframe middle shell 12 .

[0043] Example 2

[0044] The specific implementation steps of a portable αβ aerosol monitoring device are as follows: After the device is turned on, the display screen 22 displays the operation interface, which can be divided into three main operation areas: parameter setting, energy spectrum display, and device control. Parameter setting is mainly used to set the operation mode and alarm threshold; the energy spectrum display can switch to display the measured energy spectrum and cumulative dose data; the device control function provides control of the device start, stop, consumable replacement and reset operations. After entering the operation interface, the device displays normally, confirm that the air inlet cover 15 is open and the air outlet nozzle 16 is unobstructed, press the start button on the display screen 22, and the device starts working. Under the action of the air pump 51, the sampling gas enters from the air inlet pipe 33, flows through the entire air path and is discharged from the air outlet nozzle 16. The sampling gas passes through the detection unit 3 and is filtered by the filter paper 410. The aerosol particles in the sampling gas are filtered onto the filter paper 410. During this process, the detection PIPS unit continuously transmits the detection data of the filter paper 410 to the digital multi-channel control board 73, and the data processed by the digital multi-channel control board 73 is transmitted to the main board 71. The main board 71 displays the processed data on the display unit 2 to realize real-time monitoring. During the detection process, the flow meter 52 transmits the passing sampling gas data to the main board 71 in real time. When the data transmitted by the flow meter 52 accumulates to the preset value, the main board 71 sends an instruction to start automatic paper replacement. During the automatic paper changing process, first, the air pump 51 stops working and no longer extracts sampling gas from the outside. The electromagnet 47 is energized and attracted, and the filter paper tray 43 is pulled down to release the filter paper. The paper collection box 47 is driven by the motor 48 and rotates through the active shaft 49 to collect the paper, and the filter paper 410 is tightened into the paper collection box 41. During the paper collection process, the paper storage wheel 42 rotates due to the friction of the filter paper. A speed measuring code disk is set at the tail of the paper storage wheel 42, and the photoelectric switch detects the rotation of the paper storage wheel 42. The photoelectric switch transmits the detection data to the control unit 7. When the detection data of the photoelectric switch accumulates to a preset value, the motor 48 stops working, the electromagnet 47 is powered off to release the magnetic core, and the filter paper tray 43 presses the filter paper 410 upward against the detection lower shell 32 under the force of the tray spring 44, and the air path is re-sealed through the rubber sealing pad; at this point, the equipment completes the previous round of sampling and detection work, the air pump 51 is started again, and the equipment starts a new round of sampling and detection until the user manually turns off the equipment monitoring.

[0045] Among them, an air inlet cover 15 is provided on the air inlet nozzle, which is used to seal the air inlet pipe when the device is not turned on. The air outlet nozzle 16 adopts a one-way valve mode to prevent the exhaust gas or other situations from affecting the operation of the device and play a sealing role. In order to control the size and weight of the portable αβ aerosol monitoring device, the main unit front cover 11, the main unit middle shell 12, and the main unit rear cover 13 are all made of light alloy metal. The function of the frame unit 1 is: as a structural body, it is used to carry and fix other units and systems, and to achieve the sealing between the internal cavity of the whole machine and the external environment, and to protect the internal parts and circuits.

[0046] When the display unit 2 is in a sealed state, the quick lock 23 is rotated 90 degrees and loosened to open the display unit 2 for operation; when the display unit 2 is in an open state, the display unit 2 is pushed until it is in full contact with the sealing ring between the front cover 11 of the host, and the quick lock 23 is rotated 90 degrees and tightened to seal the display unit 2 and achieve equipment sealing protection. The functions of the display unit 2 are: to display information such as equipment status and measurement data through the display screen 22, provide human-computer interaction, perform sound and light alarm functions, perform equipment control, realize equipment start and stop, and read and configure detection data.

[0047] A rubber shock absorber is placed at the PIPS part for detection to prevent vibration from affecting the PIPS detection results. A cable fixing head is used to fix the seal at the cable interface. A sealing gasket is provided between the air intake pipe 33 and the main body middle shell 12, which is fastened and sealed by screws to ensure that the sampled gas will not leak into the equipment cavity during the process of entering the air intake path, causing pollution to other parts. The function of the detection unit 3 is to detect the sampling filter paper and send the detection data signal to the control unit 7.

[0048] The rear of the paper storage wheel 42 is provided with a speed measuring code disk, which cooperates with the photoelectric switch to detect the rotation of the paper storage wheel 42, and the photoelectric switch transmits the detection data to the control unit 7; the rear of the paper storage wheel 42 can be additionally provided with a damping device to tighten the filter paper belt to prevent the filter paper belt from becoming loose during the paper changing process; the sliding bearing between the filter paper tray 43 and the tray fixing frame 45 allows the filter paper tray 43 to reciprocate up and down, and a rubber sealing pad is provided on the upper part of the filter paper tray 43. Under the action of the tray spring 44, the filter paper tray 43 presses the filter paper upward against the detection lower shell 32, and the rubber sealing pad is used to achieve air path sealing; a sealing ring is provided between the tray air outlet joint 46 and the filter paper tray 43, and the tray air outlet joint 46 plays the role of connecting the air path and limiting the displacement of the filter paper tray 43; the electromagnet 47 is connected to the tray air outlet joint 46 by a spring pin, and the filter paper tray 43 is pulled down to release the filter paper through the attraction of the electromagnet 47. When changing paper, the filter paper does not contact the filter paper tray 43 and directly enters the paper receiving box 41, which will not cause secondary pollution. The function of the sampling unit 4 is to provide a mechanism for filter paper support and automatic filter paper replacement, and to ensure that the entire gas path is in a sealed state during operation through a rubber sealing ring.

[0049] The function of the gas outlet unit 5 is to provide sampling power for the monitoring device, monitor the flow rate of the sampled gas to determine the single sampling volume, and feed the data back to the control unit 7.

[0050] The cushioning cotton around the power module 62 can reduce the impact of vibration and impact on the power module during use. The function of the power unit 6 is to provide working power for the monitoring device.

[0051] The functions of the control unit 7 are as follows: the main board 71 is the control core of the monitoring equipment, used to process the data transmitted by each control board and sensor, and issue control instructions to each execution unit; the pump control board 72 controls the start and stop of the air pump 51, the adjustment of parameters such as air volume and power; the digital multi-channel control board 73 controls the PIPS for detection, and transmits the processed detection data to the main board 71.

[0052] Summary: The utility model allows the sampling gas to enter from the detection unit, and after being filtered by the filter paper of the sampling unit, it is discharged from the gas outlet unit; the detection unit immediately detects the filter paper and provides the detection data to the control unit; the control unit transmits the analyzed data to the display unit for display on the display unit. When a sampling cycle is completed, the control unit controls the gas outlet unit to stop exhausting, and the sampling unit automatically replaces the filter paper and enters a new sampling cycle. When calibrating the equipment, you only need to manually pull down the filter paper tray in the sampling unit, and then put it into the calibration tooling for online calibration.

[0053] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The various components mentioned in the utility model are common technologies in the existing field. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A portable αβ aerosol monitoring device, characterized in that It consists of a frame unit, a display unit, a detection unit, a sampling unit, an air outlet unit, a power supply unit and a control unit; The frame unit comprises a mainframe front cover, a mainframe middle shell, a mainframe back cover, a folding handle, an air inlet pipe cover, and an air outlet nozzle. The mainframe middle shell is connected to the mainframe front cover in front, the mainframe middle shell is connected to the mainframe back cover in the back, the mainframe middle shell is installed with a folding handle, the mainframe middle shell is provided with an air inlet nozzle, an air inlet pipe cover is provided thereon, and an air outlet nozzle is provided on the side of the mainframe middle shell. Sealing pads are provided between the mainframe front cover and the mainframe middle shell, between the mainframe middle shell and the mainframe back cover, between the air inlet pipe cover and the mainframe middle shell, and between the air outlet nozzle and the mainframe middle shell, and are all fastened and sealed by screws; The display unit includes a display frame, a display screen, and a quick-release lock. The display frame is connected to the front cover of the host by a hinge. The display screen is fixed on the display frame. A sealing gasket is provided between the display frame and the display screen, and is fastened and sealed by screws. The display frame is provided with a quick-release lock. The detection unit comprises a detection upper shell, a detection lower shell, an air intake pipe, and a PIPS part. The detection lower shell is connected to the detection upper shell, and the air intake pipe is connected to the detection upper shell. A sealing ring is provided between the detection upper shell and the detection lower shell, and between the air intake pipe and the detection upper shell, and is fastened and sealed by screws. The PIPS part is placed inside the cavity formed by the detection upper shell and the detection lower shell, and rubber is placed at the PIPS part for shock absorption; The sampling unit includes a paper receiving box, a paper storage wheel, a filter paper tray, a tray spring, a tray fixing frame, a tray air outlet joint, an electromagnet, a motor, a driving shaft, and filter paper. The mainframe middle shell is connected to the paper receiving box, a sealing gasket is arranged between the paper receiving box and the mainframe middle shell, and is fastened and sealed by screws. A motor is arranged in the paper receiving box, the motor is connected to a driving shaft, one end of the filter paper is connected to the driving shaft, a paper storage wheel is arranged in the mainframe middle shell, the other end of the filter paper is arranged on the paper storage wheel, a tray fixing frame is fixed in the mainframe middle shell by screws, and a sliding plate is arranged between the tray fixing frame and the filter paper tray. The main body has a plurality of bearings and tray springs, and a speed code disk and a photoelectric switch are arranged at the end of the paper storage wheel; the air outlet unit includes an air pump, a flow meter, a connecting ring, and a flow meter air inlet joint. The air pump is connected to the flow meter by screws in the main body middle shell, and the air pump and the flow meter are connected and fixed by a connecting ring. The flow meter is provided with a flow meter air inlet joint, and the flow meter air inlet joint is connected to the tray air outlet joint by a hose. A sealing gasket is arranged between the main body middle shell and the air pump, a sealing ring and a sealing gasket are arranged inside the connecting ring, and a sealing ring is arranged between the flow meter air inlet joint and the flow meter, and the sealing ring and the sealing gasket are fixed with screws to achieve fastening and sealing; The power supply unit includes a power supply shell, a power supply module, and a buffer cotton. The mainframe middle shell is connected to the power supply shell by screws. The power supply shell is provided with a power supply module, and the contact surfaces of the power supply module are provided with a buffer cotton. The control unit comprises a main board, a pump control board and a digital multi-channel control board, and the main board, the pump control board and the digital multi-channel control board are all installed in the main unit middle shell by screws.

2. A portable αβ aerosol monitoring device according to claim 1, characterized in that: The host front cover, host middle shell and host rear cover are all processed in one piece using light alloy metal.

3. A portable αβ aerosol monitoring device according to claim 1, characterized in that: The display screen is a touchable display screen.

4. A portable αβ aerosol monitoring device according to claim 1, characterized in that: The sampling unit, the detection unit and the display unit are located above the middle shell of the main unit, and the power supply unit and the air outlet unit are located below the middle shell of the main unit.

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