Comprehensive sampler for particulate matters in ambient air

Abstract

The utility model relates to a comprehensive sampler for particulate matters in ambient air, and belongs to the technical field of samplers. Comprising a sampler body, a transmission pipe and a sampling head fixedly connected to the upper end of the transmission pipe, a display screen is fixedly embedded in the front side of the sampler body, a key panel is fixedly connected to the front side of the sampler body and located below the display screen, and multiple sets of wire harness interfaces are fixedly connected to the front side of the sampler body and located below the key panel. According to the utility model, through the arrangement of the light shield, sunlight is effectively prevented from directly irradiating the display screen, and the accuracy of data reading and the convenience of operation are greatly improved. And by arranging the side fixing plate, the movable seat, the supporting leg frame and the diagonal draw bar, stable height support can be provided for the sampler body. Meanwhile, the supporting leg frames can be conveniently folded and stored on the two sides of the sampler body when not in use, so that not only is the situation avoided that too large space is occupied, but also the trouble of carrying an additional triangular bracket is eliminated, and the operation is easier and more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to sampler technical field especially relates to a kind of environmental air particulate matter comprehensive sampler. BACKGROUND

[0002] Environmental air particulate matter comprehensive sampler is a kind of equipment for collecting particulate matter (such as PM2.5, PM10 etc.) in air, and is widely used in environmental monitoring, air quality assessment and atmospheric pollution prevention and control fields. Particulate matter pollution is an important part of atmospheric pollution, and has strong harmfulness. To accurately assess the concentration of particulate matter in air, understand its component characteristics and source, scientific sampling and analysis must be carried out.

[0003] The existing environmental air particulate matter comprehensive sampler is usually used outdoors, which makes the display screen easy to reflect under sunlight, making it difficult to see the content of the display screen and affecting the operation and data reading of the user. Secondly, since the sampling of environmental air particulate matter usually needs to be carried out at a certain height, a tripod is needed to support the machine body when using the environmental air particulate matter comprehensive sampler. In this way, the user needs to carry an additional triangular support when carrying out air particulate matter detection outdoors, which undoubtedly increases the complexity of operation and the burden of carrying. SUMMARY

[0004] To solve the above technical problems, the utility model provides a kind of environmental air particulate matter comprehensive sampler.

[0005] The technical scheme of the utility model is as follows:

[0006] A kind of environmental air particulate matter comprehensive sampler, including sampler machine body, transmission pipe and the sampling head of fixed connection on the upper end of transmission pipe, the front side of sampler machine body is fixedly embedded with display screen, the front side of sampler machine body and the lower fixed connection of button panel of display screen, the front side of sampler machine body and the lower fixed connection of multiple wire harness interfaces of button panel, the upper surface of sampler machine body is hinged with handle, the upper surface of sampler machine body front side is fixedly connected with the fixed ring seat for installing transmission pipe, the upper of display screen is detachably connected with sunshade, transmission pipe is detachably inserted in the inside of fixed ring seat, the left and right sides of sampler machine body are symmetrically fixed with side fixed plate, the side of side fixed plate away from sampler machine body is equipped with a slidable movable seat and is fixed between the two by fixing piece, the lower surface of movable seat is symmetrically fixed with longitudinal support, the side of movable seat away from side fixed plate is hinged with support leg support, the support leg support includes two groups of adjustable length telescopic legs, and the two groups telescopic legs are symmetrically arranged in the shape of eight characters, the longitudinal support is connected with support leg support with inclined pull rod for limiting the opening angle of support leg support.

[0007] Optionally, the display screen is fixedly connected with a frame, symmetrical slots are arranged on the left and right sides of the frame, the light shield cover comprises a group of top plates and two groups of side plates, the two groups of side plates are fixedly connected to the left and right sides of the lower surface of the top plate, and plug-in strips are fixedly connected to the inner side of the rear of the two groups of side plates.

[0008] Optionally, two groups of limiting blocks are symmetrically arranged on the lower end of the outer side of the transmission pipe, two groups of arc-shaped limiting grooves matched with the limiting blocks are arranged in the inner side of the fixed ring seat, two groups of plug-in grooves for inserting the limiting blocks are arranged on the upper surface of the fixed ring seat, the two groups of plug-in grooves are respectively communicated with the corresponding side of the arc-shaped limiting groove, and the plug-in groove is located at one end of the arc-shaped limiting groove.

[0009] Optionally, a magnet piece one is fixedly connected to the inner side of the arc-shaped limiting groove away from the plug-in groove, and a magnet piece two magnetically attracted to the magnet piece one is fixedly connected to one side of the limiting block.

[0010] Optionally, a T-shaped groove is arranged on the upper surface of the side fixed plate, the T-shaped groove penetrates through the side of the side fixed plate away from the sampler body, and a T-shaped sliding block in sliding cooperation with the T-shaped groove is fixedly connected to the side of the movable seat close to the side fixed plate.

[0011] Optionally, a plurality of groups of fixing holes are equidistantly arranged on the two ends of the side of the side fixed plate away from the sampler body, and ear plates are fixedly connected to the upper surfaces of the two ends of the movable seat.

[0012] Optionally, a fixing sleeve is fixedly connected to the side of the movable seat away from the side fixed plate, the support leg frame further comprises a short connecting rod, the short connecting rod is rotatably connected to the inner side of the fixing sleeve, the telescopic supporting legs comprise main supporting legs which are hollow and open at the lower surface, the short connecting rod is located between the two groups of main supporting legs, and the upper ends of the two groups of main supporting legs are fixed to the two ends of the short connecting rod.

[0013] Optionally, the support leg frame further comprises a long connecting rod fixedly connected at a lower position between the two groups of main supporting legs, an ear seat is fixedly connected to a middle position of one side of the long connecting rod close to the longitudinal supporting rod, the diagonal pull rod is rotatably connected between the shaft and the ear seat, a sliding rod slidably connected with the two groups of longitudinal supporting rods is rotatably connected to an end of the diagonal pull rod away from the ear seat, a sliding groove is formed in the interior of each of the two groups of longitudinal supporting rods, a through groove in communication with the sliding groove is formed in the front and back sides of the longitudinal supporting rod, two groups of pulleys slidably arranged in the sliding groove are rotatably connected to the outer side of the sliding rod, and a threaded buckle is arranged at each end of the sliding rod, and a nut for fixing the relative position of the longitudinal supporting rod and the sliding rod is threadedly sleeved to the outer side of the threaded buckle.

[0014] All the optional technical solutions described above can be combined arbitrarily, and the structure after combination will not be described in detail.

[0015] By means of the above-mentioned scheme, the beneficial effects of the present application are as follows:

[0016] 1. The light shield is arranged, which effectively avoids direct sunlight from shining on the display screen, thereby reducing visual interference caused by sunlight reflection or strong light, and greatly improving the accuracy of data reading and the convenience of operation.

[0017] 2. The side fixing plate, the movable seat, the support leg frame and the diagonal pull rod are arranged, which can provide stable height support for the sampler body. Meanwhile, the support leg frame can be conveniently folded and stored on the two sides of the sampler body when not in use, which not only avoids occupying too much space, but also eliminates the trouble of carrying an additional tripod, so that the operation is more relaxed and convenient. Specifically, when it is necessary to support the sampler body to a certain height, the movable seat is only needed to be slid downward, at which time the support leg frame will be synchronously moved downward. Then the support leg frame is rotated and unfolded, so that the support leg frames on the two sides of the sampler body are unfolded in an "eight-shaped" manner, and the diagonal pull rod can limit the unfolding angle of the support leg frame, effectively preventing it from being unfolded excessively, so as to stably support the sampler body. Finally, the length of the two groups of telescopic supporting legs is adjusted according to the sampling requirement, so as to meet the height requirement of sampling.

[0018] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and the content of the specification can be implemented. The following will be described in detail with reference to the preferred embodiments of the present application and in conjunction with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The overall appearance structure schematic diagram of the environmental air particulate matter comprehensive sampler is provided.

[0020] Figure 2 The overall front view of the environmental air particulate matter comprehensive sampler is provided.

[0021] Figure 3 The whole right view of the environmental air particulate matter comprehensive sampler is provided;

[0022] Figure 4 The whole appearance structure schematic diagram of the environmental air particulate matter comprehensive sampler after the support leg frame is unfolded is provided;

[0023] Figure 5 The Figure 4 The front view is provided;

[0024] Figure 6 The exploded structure schematic diagram of the environmental air particulate matter comprehensive sampler is provided;

[0025] Figure 7 The Figure 6 The enlarged structure schematic diagram of A in the figure is provided;

[0026] Figure 8 The Figure 6 The enlarged structure schematic diagram of B in the figure is provided;

[0027] Figure 9 The structure schematic diagram of the fixed ring seat in the utility model is provided;

[0028] Figure 10 The top view sectional view of the limiting block and the fixed ring seat cooperation in the utility model is provided;

[0029] Figure 11 The exploded structure schematic diagram of the side fixed plate, the movable seat and the support leg frame in the utility model is provided;

[0030] Figure 12 The top view sectional view of the environmental air particulate matter comprehensive sampler is provided;

[0031] Figure 13 The exploded structure schematic diagram of the movable seat and the accessory parts and the support leg frame cooperation in the utility model is provided.

[0032] The figure mark: 1, sampler body; 11, display screen; 111, frame; 1111, slot; 12, key panel; 13, wire harness interface; 14, handle; 2, light shield; 21, top plate; 22, side plate; 221, insertion strip; 3, fixed ring seat; 31, arc-shaped limiting groove; 32, insertion groove; 33, magnet piece one; 4, transmission pipe; 41, sampling head; 42, limiting block; 421, magnet piece two; 43, sealing ring; 5, side fixed plate; 51, T-shaped groove; 52, fixed hole; 6, movable seat; 61, fixed sleeve; 62, vertical support rod; 621, sliding groove; 622, through groove; 63, T-shaped sliding block; 64, ear plate; 641, fixed bolt; 7, support leg frame; 71, telescopic support leg; 711, main support leg; 712, auxiliary support leg; 713, secondary support leg; 714, universal ball foot cup; 72, short connecting rod; 73, long connecting rod; 731, ear seat; 8, inclined pull rod; 81, sliding rod; 811, threaded buckle; 82, pulley; 83, nut. DETAILED DESCRIPTION

[0033] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0034] Please refer to Figures 1-13 The present application provides a kind of ambient air particulate matter comprehensive sampler, including sampler body 1, transmission pipe 4 and the sampling head 41 of fixed connection on the upper end of transmission pipe 4, the front side of sampler body 1 is fixedly embedded with display screen 11, the front side of sampler body 1 and the lower side of display screen 11 are fixedly connected with key panel 12, the front side of sampler body 1 and the lower side of key panel 12 are fixedly connected with multiple wire harness interfaces 13, the upper surface of sampler body 1 is hinged with handle 14, the upper surface of sampler body 1 front side is fixedly connected with fixed ring seat 3 for installing transmission pipe 4, the upper side of display screen 11 is detachably connected with light shield 2, transmission pipe 4 is detachably inserted in the inner side of fixed ring seat 3, the left and right sides of sampler body 1 are symmetrically fixed with side fixed plate 5, the side of side fixed plate 5 away from sampler body 1 is equipped with a slidable movable seat 6 and is fixed between the two by fixing member, the lower surface of movable seat 6 is symmetrically fixed with vertical support rod 62, the side of movable seat 6 away from side fixed plate 5 is hinged with support leg frame 7, support leg frame 7 includes two groups of adjustable length telescopic support leg 71, and the two groups of telescopic support leg 71 are symmetrically arranged in the shape of eight characters, vertical support rod 62 and support leg frame 7 are connected with inclined pull rod 8 for limiting the opening angle of support leg frame 7.

[0035] The present application is provided with light shield 2, which effectively avoids direct sunlight from shining on display screen 11, thereby reducing visual interference caused by sunlight reflection or strong light, greatly improving the accuracy of data reading and the convenience of operation.

[0036] By setting the side fixing plate 5, the movable seat 6, the support leg frame 7 and the inclined pull rod 8, stable height support can be provided for the sampler body 1. At the same time, the support leg frame 7 can be conveniently folded and stored on both sides of the sampler body 1 when not in use, not only avoiding occupying too much space, but also eliminating the trouble of carrying an additional tripod, making the operation more convenient and portable. Specifically, when the sampler body 1 needs to be supported to a certain height, the movable seat 6 is only needed to be slid downward, at which time the support leg frame 7 will move downward synchronously. Then the support leg frame 7 is rotated and unfolded, so that the support leg frames 7 on both sides of the sampler body 1 are unfolded in an "eight-shaped" manner. During the unfolding of the support leg frame 7, the inclined pull rod 8 also moves, and the inclined pull rod 8 can limit the unfolding angle of the support leg frame 7, effectively preventing it from being unfolded too much. Secondly, the two groups of telescopic legs 71 are also symmetrically arranged in an "eight-shaped" manner, which can ensure stable support for the sampler body 1. Finally, the length of the two groups of telescopic legs 71 is adjusted according to the sampling requirements, so as to meet the height requirements of sampling.

[0037] It should be noted that the sampler body 1 mentioned herein is a conventional environmental air particulate matter comprehensive sampler in the prior art. The operator can conveniently operate the sampler body 1 through the key panel 12. At the same time, the sampling data can be monitored and displayed in real time through the display screen 11, so that the operator can timely understand the sampling process and data condition.

[0038] Further, the display screen 11 is fixedly connected with a frame 111, and the left and right sides of the frame 111 are symmetrically provided with a plurality of insertion grooves 1111. The light shield 2 comprises a top plate 21 and two groups of side plates 22, the two groups of side plates 22 are fixedly connected to the left and right sides of the lower surface of the top plate 21, and the inner side of the rear of the two groups of side plates 22 is fixedly connected with a plurality of insertion strips 221 which are inserted into the insertion grooves 1111.

[0039] Specifically, the light shield 2 adopts a detachable structure, so that when used outdoors, the user only needs to insert the insertion strip 221 into the corresponding insertion groove 1111 on one side to conveniently and quickly install the light shield 2 on the frame 111 of the display screen 11, effectively avoiding the direct impact of sunlight, thereby ensuring the clear visibility of the content of the display screen 11. Not only does it enhance the operability of the display screen 11 in strong light environment, but also it is convenient for the user to flexibly disassemble or install the light shield 2 according to different environmental requirements, thereby improving the overall use experience.

[0040] Further, the outer lower end of the transmission pipe 4 is symmetrically provided with two sets of limiting blocks 42, the inner part of the fixed ring seat 3 is symmetrically provided with two sets of arc-shaped limiting grooves 31 matched with the limiting blocks 42, the upper surface of the fixed ring seat 3 is symmetrically provided with two sets of insertion grooves 32 for inserting the limiting blocks 42, the two sets of insertion grooves 32 are respectively communicated with the corresponding arc-shaped limiting grooves 31 on one side, and the insertion grooves 32 are located at one end of the arc-shaped limiting grooves 31, and the outer side of the transmission pipe 4 and below the limiting blocks 42 is fixedly provided with a sealing ring 43 matched with the inner side of the fixed ring seat 3.

[0041] Specifically, the transmission pipe 4 and the fixed ring seat 3 adopt a convenient insertion mode, which greatly facilitates the disassembly and assembly operation. When the transmission pipe 4 needs to be installed, only need to align the two sets of limiting blocks 42 with the two sets of insertion grooves 32, and then move the transmission pipe 4 downward, after the limiting blocks 42 slide into the arc-shaped limiting grooves 31, rotate the transmission pipe 4 clockwise, and the transmission pipe 4 drives the limiting blocks 42 to slide away from one end of the arc-shaped limiting grooves 31, thereby limiting the limiting blocks 42, the whole operation process is simple and convenient. When the transmission pipe 4 needs to be removed, only need to rotate the transmission pipe 4 counterclockwise, when the limiting blocks 42 slide to the position of the insertion grooves 32, move the transmission pipe 4 upward, and the transmission pipe 4 can be easily removed. The sealing ring 43 is clamped between the transmission pipe 4 and the fixed ring seat 3, which further ensures the sealing of the connection.

[0042] Further, one end of the arc-shaped limiting groove 31 away from the insertion groove 32 is fixedly connected with a magnet piece one 33, and one side of the limiting block 42 is fixedly connected with a magnet piece two 421 magnetically matched with the magnet piece one 33.

[0043] Specifically, when the limiting block 42 slides to one end of the arc-shaped limiting groove 31 away from the insertion groove 32, the magnet piece one 33 and the magnet piece two 421 are magnetically attracted to each other, and the magnetic force effectively fixes the position of the limiting block 42 and the arc-shaped limiting groove 31, preventing the limiting block 42 from loosening or deviating, thereby ensuring that the transmission pipe 4 is stably inserted into the fixed ring seat 3.

[0044] Further, the upper surface of the side fixed plate 5 is provided with a T-shaped groove 51, the T-shaped groove 51 penetrates through the side of the side fixed plate 5 away from the sampler body 1, the movable seat 6 is fixedly connected with a T-shaped sliding block 63 slidably matched with the T-shaped groove 51 on the side close to the side fixed plate 5, and a plurality of sets of fixing holes 52 are equally arranged at both ends of the side of the side fixed plate 5 away from the sampler body 1, and the upper surface of the movable seat 6 is fixedly connected with an ear plate 64 at both ends, and the fixing member is two sets of fixing bolts 641 which are respectively threaded into the fixing holes 52 at the corresponding positions.

[0045] Specifically, the movable seat 6 and the side fixed plate 5 adopt a slidable structure. When the sampler body 1 is idle, the movable seat 6 can be slid to the upper end position of the side fixed plate 5, so as to store the support leg frame 7 on both sides of the sampler body 1, save space, and avoid unnecessary occupation. When the support leg frame 7 needs to be used for support, the movable seat 6 is only needed to be slid downward to the lower end position of the side fixed plate 5, so as to use the support leg frame 7 to support the sampler body 1. After adjustment, the movable seat 6 and the side fixed plate 5 can be fixed by using the fixing bolt 641. The fixing bolt 641 is inserted into the corresponding fixing hole 52 through the lug plate 64, and the movable seat 6 and the side fixed plate 5 are ensured to form a stable relative fixed state by tightening the fixing bolt 641.

[0046] Further, the movable seat 6 is fixedly connected with a fixing sleeve 61 away from the side fixed plate 5. The support leg frame 7 further includes a short connecting rod 72, which is rotationally connected in the inside of the fixing sleeve 61. The telescopic support leg 71 includes a main support leg 711 which is hollow and open at the lower surface. The short connecting rod 72 is located between the two groups of main support legs 711, and the upper ends of the two groups of main support legs 711 are fixed to both ends of the short connecting rod 72. The inside lower end of the main support leg 711 is slidably connected with a secondary support leg 712, and the two are fixed by a bolt. The inside lower end of the secondary support leg 712 is slidably connected with a tertiary support leg 713, and the two are fixed by a bolt. The lower end of the secondary support leg 712 is fixedly connected with a universal ball foot cup 714.

[0047] Specifically, the length of the telescopic support leg 71 is in an adjustable state, which can be adjusted according to actual use requirements. The bolt is screwed, and then the secondary support leg 712 and the tertiary support leg 713 are moved downward, so that the overall length of the telescopic support leg 71 is lengthened, and then the bolt is used for fixing, so as to ensure the stability. The universal ball foot cup 714 can be flexibly adjusted according to the actual situation, so as to change the angle of the universal ball foot cup 714. Thus, the bottom surface of the universal ball foot cup 714 can always be in full contact with the ground, so as to ensure the stability and safety of the sampler body 1 during use.

[0048] Further, the support leg frame 7 further comprises a long connecting rod 73 fixedly connected at a lower position between the two groups of main support legs 711, and the long connecting rod 73 is fixedly connected with an ear seat 731 at a middle position of one side of the long connecting rod 73 close to the longitudinal support rod 62, and the inclined pull rod 8 is rotatably connected between the shaft and the ear seat 731, and the inclined pull rod 8 is rotatably connected with a sliding rod 81 slidably connected with the two groups of longitudinal support rods 62 at an end away from the ear seat 731, and the two groups of longitudinal support rods 62 are each internally provided with a sliding groove 621, and the longitudinal support rod 62 is provided with a through groove 622 in communication with the sliding groove 621 at front and back sides of the longitudinal support rod 62, and the sliding rod 81 is rotatably connected with two groups of pulleys 82 sliding in the sliding grooves 621 at outer sides of the sliding rod 81, and the sliding rod 81 is provided with a threaded buckle 811 at both ends, and the threaded buckle 811 is externally threadedly sleeved with a nut 83 for fixing the relative position of the longitudinal support rod 62 and the sliding rod 81.

[0049] Specifically, the included angle of the support leg frame 7 and the movable seat 6 is adjusted so that the left and right groups of support leg frames 7 are in an "eight-shaped" unfolded structure, so that the structure is more stable. When unfolding the support leg frame 7, the main support leg 711 drives the inclined pull rod 8 to unfold through the long connecting rod 73, at this time the sliding rod 81 at one end of the inclined pull rod 8 drives the pulley 82 to slide in the sliding groove 621. After the unfolding angle of the support leg frame 7 is adjusted, the nuts 83 at both ends of the sliding rod 81 are tightened to abut against the front and back sides of the longitudinal support rod 62, so as to ensure that the sliding rod 81 and the longitudinal support rod 62 do not slide relative to each other. At this time, the longitudinal support rod 62, the inclined pull rod 8 and the main support leg 711 form a stable triangular structure, thereby ensuring the stability of the overall structure of the support leg frame 7 after unfolding, and providing good support effect.

[0050] The above is only the preferred embodiment of the present application, and is not used to limit the present application. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made without departing from the technical principles of the present application, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. An ambient air particulate matter comprehensive sampler, comprising a sampler body (1), a transmission tube (4), and a sampling head (41) fixedly connected to the upper end of the transmission tube (4), wherein a display screen (11) is fixedly embedded on the front side of the sampler body (1), a keypad (12) is fixedly connected to the front side of the sampler body (1) and below the display screen (11), and multiple sets of wire harness interfaces (13) are fixedly connected to the front side of the sampler body (1) and below the keypad (12), a handle (14) is hinged to the upper surface of the sampler body (1), and a fixing ring seat (3) for mounting the transmission tube (4) is fixedly connected to the front side of the upper surface of the sampler body (1), characterized in that: A light shield (2) is detachably connected to the top of the display screen (11). The transmission tube (4) is detachably inserted into the inner side of the fixed ring seat (3). Side fixing plates (5) are symmetrically fixed on the left and right sides of the sampler body (1). A sliding movable seat (6) is provided on the side of the side fixing plate (5) away from the sampler body (1), and the two are fixed by a fixing member. A longitudinal support rod (62) is symmetrically fixed on the lower surface of the movable seat (6). A support leg frame (7) is hinged on the side of the movable seat (6) away from the side fixing plate (5). The support leg frame (7) includes two sets of telescopic legs (71) with adjustable length. The two sets of telescopic legs (71) are symmetrically arranged in a figure-eight shape. A diagonal tie rod (8) is connected between the longitudinal support rod (62) and the support leg frame (7) to limit the unfolding angle of the support leg frame (7).

2. The ambient air particulate matter comprehensive sampler according to claim 1, characterized in that, The display screen (11) is fixedly connected to a frame (111) on its periphery. Slots (1111) are symmetrically provided on the left and right sides of the frame (111). The light shield (2) includes a top plate (21) and two side plates (22). The two side plates (22) are fixedly connected to the left and right sides of the lower surface of the top plate (21). Inserts (221) are fixedly connected to the inner rear side of the two side plates (22). The inserts (221) are inserted into the slots (1111).

3. The ambient air particulate matter comprehensive sampler according to claim 1, characterized in that, Two sets of limiting blocks (42) are symmetrically fixed at the lower outer side of the transmission pipe (4). Two sets of arc-shaped limiting grooves (31) that cooperate with the limiting blocks (42) are symmetrically opened inside the fixing ring seat (3). Two sets of insertion grooves (32) for inserting the limiting blocks (42) are symmetrically opened on the upper surface of the fixing ring seat (3). The two sets of insertion grooves (32) are respectively connected to the arc-shaped limiting grooves (31) on the corresponding side. The insertion grooves (32) are located at one end of the arc-shaped limiting grooves (31). A sealing ring (43) that fits against the inner side of the fixing ring seat (3) is fixedly sleeved on the outer side of the transmission pipe (4) and below the limiting blocks (42).

4. The ambient air particulate matter comprehensive sampler according to claim 3, characterized in that, A magnet piece 1 (33) is fixedly connected to the inside of the arc-shaped limiting groove (31) and at one end away from the insertion groove (32), and a magnet piece 2 (421) that magnetically attracts and cooperates with the magnet piece 1 (33) is fixedly connected to one side of the limiting block (42).

5. The ambient air particulate matter comprehensive sampler according to claim 1, characterized in that, The upper surface of the side fixing plate (5) is provided with a T-shaped groove (51). The T-shaped groove (51) passes through the side of the side fixing plate (5) away from the sampler body (1). The movable seat (6) is fixedly connected to the side of the side fixing plate (5) with a T-shaped slider (63) that slides with the T-shaped groove (51). Both ends of the side fixing plate (5) away from the sampler body (1) are provided with several sets of fixing holes (52) at equal intervals. Both ends of the upper surface of the movable seat (6) are fixedly connected with ear plates (64). The fixing component is two sets of fixing bolts (641). The two sets of fixing bolts (641) pass through the ear plates (64) on the corresponding side and are threaded into the fixing holes (52) at the corresponding positions.

6. The ambient air particulate matter comprehensive sampler according to claim 1, characterized in that, The movable seat (6) is fixedly connected to a fixed sleeve (61) on the side away from the side fixing plate (5). The support leg frame (7) also includes a short connecting rod (72). The short connecting rod (72) is rotatably connected inside the fixed sleeve (61). The telescopic support leg (71) includes a hollow main support leg (711) with an open lower surface. The short connecting rod (72) is located between two sets of main support legs (711), and the upper ends of the two sets of main support legs (711) are fixed to both ends of the short connecting rod (72). The lower end of the main support leg (711) is slidably connected to a secondary support leg (712), and the two are fixed together by bolts. The lower end of the secondary support leg (712) is slidably connected to a secondary support leg (713), and the two are fixed together by bolts. The lower end of the secondary support leg (712) is fixedly connected to a universal ball joint cup (714).

7. An ambient air particulate matter comprehensive sampler according to claim 6, characterized in that, The support leg frame (7) also includes a long connecting rod (73), which is fixedly connected to the lower part between the two sets of main support legs (711). An ear seat (731) is fixedly connected to the middle of the side of the long connecting rod (73) near the longitudinal support rod (62). The diagonal tie rod (8) is rotatably connected to the ear seat (731) via a shaft. A slide rod (81) rotatably connected to the end of the diagonal tie rod (8) away from the ear seat (731) is slidably connected to the two sets of longitudinal support rods (62). The longitudinal support rod (62) is provided with a sliding groove (621) inside. The front and rear sides of the longitudinal support rod (62) are provided with through grooves (622) that communicate with the sliding grooves (621). The outer side of the slide rod (81) is rotatably connected with two sets of pulleys (82) that slide inside the sliding grooves (621). Both ends of the slide rod (81) are provided with threaded buckles (811). The outer side of the threaded buckles (811) is threaded with nuts (83) for fixing the relative position of the longitudinal support rod (62) and the slide rod (81).

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