CN218766224U - A particle detection and sampling device - Google Patents

Abstract

The utility model discloses a particle detection and sampling device, wherein, the top end of the fixed plate is fixedly connected with the upper shell, the sliding plate is slidably installed in the fixed plate, and the bottom end of the sliding plate is fixedly connected with the lower shell; the sample storage cylinder is arranged between the upper shell and the lower shell. Between the shells; in the detection part, the upper sliding seat is slidably installed in the upper shell, the top of the mounting rod is fixedly connected with the upper sliding seat, the bottom of the mounting rod extends into the inner cavity of the sample storage cylinder, and the detection sensor is fixedly installed at the bottom of the mounting rod; In the sampling part, the air delivery port is fixedly connected to the lower casing and communicated with the sample storage cylinder, the gas extraction port is fixed to the side wall of the lower casing, and the air pump is connected to the gas delivery port and the gas extraction port; the driving mechanism is installed in the upper casing And keep linkage with sliding plate, upper sliding seat. The unified design of the sampling part and the detection part is convenient for field detection, and the sensor used for detection can be cleaned in real time to ensure the accuracy of subsequent detection. When the gas sample in the storage tank is detected on site, the gas sample can be stored stably for subsequent further detection. Work.

Description

A particle detection and sampling device

technical field

The utility model relates to the technical field of gas quality detection, in particular to a particle detection and sampling device.

Background technique

When monitoring the suspended particulate matter in the atmospheric environment detection, it is necessary for the staff to sample the atmosphere at a specific detection point and detect it, mainly including PM2.5 and PM10. The traditional detection device and the sampling device are designed separately, that is, by After the sampling device has finished sampling, the particulate matter in it is detected by the detection device. This structure requires sampling and detection personnel to carry a variety of equipment when they go out for detection, and the portability is very poor. In addition, when the traditional detection device detects particulate matter, since the particulate matter will contaminate the detection probe of the relevant sensor, if the detection probe is not cleaned, the follow-up monitoring data will be inaccurate. When analyzing the types of particulate matter in the collected air samples, it is necessary to bring the gas samples back to the laboratory for further detection by relevant instruments, so it is necessary to ensure the sealing performance of the sampling device itself.

Utility model content

In view of the above-mentioned deficiencies in the prior art, the purpose of this utility model is to provide a particle detection and sampling device. The unified design of the sampling part and the detection part is convenient for field detection work, and the real-time cleaning of the detection sensor can be ensured. Accuracy of follow-up detection, on-site detection of gas samples in the sample storage tank can ensure stable storage of gas samples for subsequent further detection work.

The technical scheme adopted by the utility model to achieve the above purpose is: a particle detection and sampling device, including a fixed plate, a sliding plate, a sample storage cylinder, a detection component, a sampling component, and a driving mechanism, and the top of the fixed plate is fixed with a The upper shell, the sliding plate is slidably installed in the fixed plate, the bottom end of the sliding plate is fixedly connected with the lower shell arranged under the fixed plate; the sample storage tube is arranged between the upper shell and the lower shell, and the detection part includes Upper sliding seat, installation rod, detection sensor, the upper sliding seat is slidably installed in the upper shell, the top of the installation rod is fixedly connected with the upper sliding seat, the bottom of the installation rod extends into the inner cavity of the sample storage cylinder, and the detection sensor is fixedly installed on the installation rod Bottom; the sampling component includes an air pump, an air delivery port, and an air extraction port. The air delivery port is fixedly connected to the top of the lower casing and communicates with the sample storage cylinder. The air pump is fixedly installed in the lower casing and communicates with the air delivery port and the air suction port; the driving mechanism is matched and installed in the upper casing and keeps linkage with the sliding plate and the upper sliding seat.

In some implementations, in order to ensure that the lower casing can input the atmospheric samples collected from the outside into the sample storage cylinder, and at the same time effectively fix the bottom of the sample storage cylinder, the following related technical solutions are provided.

The bottom of the sample storage cylinder is screwed with a lower sealing cover, and the center of the lower surface of the lower sealing cover is provided with an installation groove, and the center of the installation groove is provided with a plugging groove, and a socket is slidably installed in the mounting groove, and the center of the socket is The insertion rod is fixedly connected with the insertion rod slidably installed in the insertion groove, and the support spring against the socket seat is arranged in the installation groove. The first passage is opened in the insertion rod and the socket seat, and the upstream end of the first passage is arranged On the lower surface of the socket, the downstream end of the first passage is arranged on the side wall of the insertion rod, the second passage is opened in the lower sealing cover, the upstream end of the second passage is arranged on the side wall of the insertion groove, and the downstream end of the second passage is arranged on the upper surface of the lower sealing cover; the top of the lower casing is fixedly connected with a lower positioning ring nested and clamped with the lower sealing cover, the gas delivery port is arranged at the center of the lower positioning ring, and the gas delivery port is upstream of the first passage End nested plug.

In some of these implementations, in order to ensure that the detection sensor can be stably installed on the installation rod and at the same time effectively detect the atmospheric sample in the sample storage cylinder, facilitate the cleaning of the detection sensor, and ensure the storage environment of the detection sensor, the following related technical solutions are provided .

There are multiple groups of evenly arranged mounting holes on the bottom side wall of the mounting rod, and the detection sensors are installed in each group of mounting holes, and the bottom of the upper shell is fixedly connected with a mounting ring arranged on the periphery of the mounting rod, Cleaning cotton arranged adjacent to each detection sensor is fixedly connected in the ring.

On the basis of the above technical solutions, in order to ensure that the upper shell can effectively fix the top of the sample storage cylinder, and at the same time ensure that the installation rod can effectively extend into the sample storage cylinder and carry out related detection of atmospheric samples in it, the following related technical solutions are provided.

The top of the sample storage cylinder is screwed with an upper sealing cover, and the center of the upper sealing cover is provided with an insertion port. The lower surface of the upper sealing cover is fixed with multiple sets of vertically arranged guide columns arranged inside the sample storage cylinder. The bottom of each group of guide columns The ends are fixedly connected through the connecting seat, the plug-in interface is sealed and plugged with a sealing plug, and the sealing plug is slidably combined with the guide column, and a return spring is arranged on the outside of the guide post, and the two ends of the return spring are fixedly connected to the connecting seat and the sealing plug respectively; An upper positioning ring nested with the upper sealing cover is fixedly connected to the bottom of the installation ring, and the bottom end of the installation rod is arranged vertically with the insertion port and abuts against the sealing plug.

In some implementations, in order to ensure that the sliding plate can slide stably in the fixed plate and at the same time ensure that the driving mechanism drives it to run stably, the following technical solutions are provided.

A sliding cavity is opened in the fixed plate, and a sliding seat is fixedly connected to the top of the sliding plate, and both the sliding seat and the sliding plate are slidably installed in the sliding cavity; the driving mechanism includes an upper screw rod, a lower screw rod, a driving motor, and an upper screw The rod is rotatably installed in the upper casing and keeps screwing with the upper sliding seat. The lower screw rod is rotatably installed in the sliding cavity and keeps screwing with the sliding seat. The driving motor is fixedly installed in the upper casing and is connected with the upper screw rod and the lower screw rod. power connection.

Beneficial effects of the utility model: the sampling part is installed in the lower casing, and the detection part is installed in the upper casing, and the two are driven by the driving mechanism to run in unison to complete the collection and detection of atmospheric samples, and the sampling part and the detection part are uniformly designed It is convenient enough for field detection work. There are installation rings and cleaning cotton on the periphery of the installation rod equipped with detection sensors. During the lifting movement of the detection sensor driven by the installation rod, the detection sensor can be automatically cleaned, and the detection sensor can be cleaned in real time to ensure the accuracy of subsequent detection. . The upper and lower sealing covers provided at the upper and lower ends of the sample storage cylinder can ensure that the gas sample and the installation rod are stably inserted into it. At the same time, when the sample storage cylinder is placed alone, it remains sealed. When the gas sample in the sample storage cylinder is tested on site, the gas can be guaranteed. Stable storage of samples for subsequent further testing work.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation after the utility model cuts;

Fig. 3 is a schematic diagram showing enlarged details of part A in Fig. 2;

Fig. 4 is a structural schematic diagram of another viewing angle after sectioning of the utility model;

Fig. 5 is a schematic structural view of part B in Fig. 4;

Fig. 6 is a schematic structural view of part C in Fig. 4;

Fig. 7 is a schematic structural diagram of part D in Fig. 4;

Fig. 8 is a schematic structural diagram after sectioning of the lower sealing cover;

Fig. 9 is a schematic diagram of the cut-away structure of the upper sealing cover.

In the figure: 1 fixed plate, 2 sliding plate, 3 sample storage cylinder, 4 upper shell, 5 lower shell, 6 upper sliding seat, 7 installation rod, 8 air pump, 9 air delivery port, 10 air extraction port, 11 connecting pipe, 12 electronic switch valve, 13 lower sealing cover, 14 installation slot, 15 socket seat, 16 insertion rod, 17 support spring, 18 first passage, 19 second passage, 20 lower positioning ring, 21 installation hole, 22 installation ring , 23 cleaning cotton, 24 upper sealing cover, 25 socket, 26 guide column, 27 connecting seat, 28 sealing plug, 29 return spring, 30 upper positioning ring, 31 sliding cavity, 32 lower seat, 33 upper screw rod, 34 lower Screw mandrel, 35 drive motors, 36 transmission sprockets, 37 transmission gears, 38 drive gears, 39 touch display screens, 40 storage batteries.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-5, a particle detection and sampling device, including a fixed plate 1, a sliding plate 2, a sample storage cylinder 3, a detection component, a sampling component, and a driving mechanism. The plate 2 is slidably installed in the fixed plate 1, and the bottom end of the sliding plate 2 is fixedly connected with the lower shell 5 arranged under the fixed plate 1; the sample storage tube 3 is arranged between the upper shell 4 and the lower shell 5, and the detection components include Seat 6, mounting rod 7, detection sensor, upper sliding seat 6 is slidably installed in upper casing 4, the top of mounting rod 7 is fixedly connected with upper sliding seat 6, the bottom of mounting rod 7 extends into the inner cavity of sample storage cylinder 3, and detects The sensor is fixedly installed on the bottom of the installation rod 7; the sampling components include an air pump 8, an air delivery port 9, and an air extraction port 10, the air delivery port 9 is fixedly connected to the top of the lower casing 5 and communicated with the sample storage cylinder 3, and the air extraction port 10 is fixedly connected On the side wall of the lower housing 5 and communicated with the external environment, the air pump 8 is fixedly installed in the lower housing 5 and communicates with the air delivery port 9 and the air extraction port 10; the driving mechanism is installed in the upper housing 4 and is connected with the sliding plate 2, Upper sliding seat 6 keeps linkage.

In order to ensure that the air pump 8 is stably communicated with the air delivery port 9 and the air extraction port 10, the air inlet and the air outlet of the air extraction pump 8 are provided with connecting pipes 11, and the connecting pipes 11 are connected with the air delivery port 9 and the air extraction port 10 respectively. In order to ensure that the atmospheric sample in the sample storage cylinder 3 will not leak along the air pump 8 when the air pump 8 stops, an electronic switch valve 12 is installed on the connecting pipe 11, and the electronic switch valve 12 controls the flow of the connecting pipe 11. break, thereby avoiding the leakage of the gas sample in the sample storage cylinder 3.

In some implementations, in order to ensure that the lower shell 5 can input the atmospheric samples collected from the outside into the sample storage cylinder 3 and at the same time effectively fix the bottom of the sample storage cylinder 3, the following related technical solutions are provided.

The bottom of the sample storage cylinder 3 is screwed with a lower sealing cover 13, and the center of the lower surface of the lower sealing cover 13 is provided with an installation groove 14, and the center of the installation groove 14 is provided with an insertion groove, and a socket 15 is slidably installed in the installation groove 14. The center of the socket 15 is fixedly connected with an insertion rod 16 which is slidably installed in the insertion groove, and a supporting spring 17 which is in contact with the socket 15 is arranged in the installation groove 14. There is a first passage 18, the upstream end of the first passage 18 is arranged on the lower surface of the socket 15, the downstream end of the first passage 18 is arranged on the side wall of the insertion rod 16, and a second passage 19 is opened in the lower sealing cover 13, The upstream end of the second passage 19 is arranged on the side wall of the insertion slot, and the downstream end of the second passage 19 is arranged on the upper surface of the lower sealing cover 13; the top of the lower housing 5 is fixed with a lower positioning ring 20 nested and engaged with the lower sealing cover 13 , the gas delivery port 9 is arranged at the center of the lower positioning ring 20 , and the gas delivery port 9 is nested and plugged with the upstream end of the first passage 18 .

Before sampling, the lower sealing cover 13 at the bottom of the sample storage cylinder 3 is nested and installed in the lower positioning ring 20, so as to realize the plug connection between the gas delivery port 9 and the first passage 18. During this process, the gas delivery port 9 can insert the plug The socket 15 is lifted up (the support spring 17 is in a compressed state at this time), and then the insertion rod 16 is pushed into the insertion groove to realize the communication between the first passage 18 and the second passage 19. When the air pump 8 is working , the outside air can be input into the sample storage cylinder 3 along the gas delivery port 9, the first passage 18, and the second passage 19, and the sample storage cylinder 3 can complete the sampling function of the atmospheric sample.

When the sample storage cylinder 3 is taken off as a whole, the gas delivery port 9 cancels the interaction with the socket 15, and at this time, under the action of the support spring 17, the socket 15 and the socket rod 16 are driven to move downward, so that the first The first passage 18 is disconnected from the second passage 19. In this state, the atmospheric sample stored in the sample storage cylinder 3 cannot leak through the first passage 18 and the second passage 19, so as to ensure the airtightness of the sample storage cylinder 3 itself.

In some implementations, in order to ensure that the detection sensor can be stably installed on the installation rod 7, the atmospheric sample in the sample storage cylinder 3 can be effectively detected, to facilitate cleaning of the detection sensor, and to ensure the storage environment of the detection sensor, the following are provided related technical solutions.

There are many groups of uniformly arranged mounting holes 21 provided on the side wall of the bottom of the mounting rod 7, and detection sensors are installed in each group of mounting holes 21. Cleaning cotton 23 arranged adjacent to each detection sensor is fixedly connected to the ring 22 .

In the process that the driving mechanism controls the installation rod 7 and the detection sensor to move up and down, the cleaning cotton 23 can clean up the detection sensor. Each detection sensor is effectively protected.

The detection sensor comprises an air pressure sensor, a PM2.5 sensor, and a PM10 sensor, respectively detects the air pressure value, PM2.5, and PM10 of the atmospheric sample in the sample storage cylinder 3, and the detection end of the last sensor is installed in the mounting hole 21 of the mounting rod 7, When the installation rod 7 extends into the sample storage cylinder 3, each sensor can detect each corresponding index of the air sample in the sample storage cylinder 3, and the cleaning cotton 23 can clean and protect the detection ends of each sensor.

On the basis of the above technical solutions, in order to ensure that the upper shell 4 can effectively fix the top of the sample storage cylinder 3, and at the same time ensure that the installation rod 7 can effectively extend into the sample storage cylinder 3 and perform relevant detection on the atmospheric samples therein, the following related technical solutions are provided .

The top of the sample storage tube 3 is screwed with an upper sealing cover 24, and the center of the upper sealing cover 24 is provided with an insertion port 25. The lower surface of the upper sealing cover 24 is fixed with multiple groups of vertically arranged guide columns arranged inside the sample storage tube 3. 26. The bottom ends of each group of guide columns 26 are fixedly connected through the connection seat 27, and the plug interface 25 is sealed and plugged with a sealing plug 28, and the sealing plug 28 is slidably combined with the guide column 26, and a return spring 29 is arranged on the outside of the guide column 26, and The two ends of back-moving spring 29 are fixedly connected with connecting seat 27 and sealing plug 28 respectively; Offset against the sealing plug 28.

The nesting of the upper positioning ring 30 and the upper sealing cover 24 can further improve the stability of fixing the sample cylinder 3 . When the mounting rod 7 stretched out downwards, the sealing plug 28 was driven to move downward along the guide post 26 (at this time, the back-moving spring 29 was in a compressed state), and the mounting rod 7 was stretched into the sample storage cylinder 3 by the insertion port 25, and the mounting rod 7. The airtight connection with the plug port 25 can prevent the atmospheric sample from leaking out from the plug port 25, and each detection sensor inserted into the sample storage cylinder 3 can effectively detect the air pressure and particle concentration of the atmospheric sample.

After the detection is completed, the installation rod 7 is controlled to move upward and when the sample storage cylinder 3 is stretched out, the return spring 29 resets and drives the sealing plug 28 upward, so that the sealing plug 28 is sealed and plugged into the socket 25 to seal the socket 25. plugged to prevent leakage of atmospheric samples.

The upper and lower ends of the sample storage tube 3 are respectively screwed with the upper sealing cover 24 and the lower sealing cover 13 to facilitate disassembly and cleaning of the sample storage tube 3 .

In some implementations, in order to ensure that the sliding plate 2 can slide stably in the fixed plate 1 and at the same time ensure that the driving mechanism drives it to run stably, the following technical solutions are provided.

A sliding cavity 31 is provided in the fixed plate 1, and a sliding seat 32 is fixedly connected to the top of the sliding plate 2, and the sliding seat 32 and the sliding plate 2 are all slidably installed in the sliding cavity 31; the driving mechanism includes an upper screw mandrel 33, a lower screw mandrel 34, Drive motor 35, the upper screw rod 33 is rotatably installed in the upper housing 4 and keeps screwing with the upper sliding seat 6, the lower screw rod 34 is rotatably installed in the sliding cavity 31 and keeps screwing with the lower seat 32, and the driving motor 35 is fixedly installed It is in the upper shell 4 and is power-connected with the upper screw mandrel 33 and the lower screw mandrel 34 .

In order to ensure that the power of the driving motor 35 can be stably transmitted to the upper screw mandrel 33 and the lower screw mandrel 34, the bottom end of the upper screw mandrel 33 and the top end of the lower screw mandrel 34 are fixedly connected with a transmission sprocket 36 arranged in the upper casing 4 Two groups of transmission sprocket wheels 36 realize chain transmission by chains, a transmission gear 37 is affixed to the bottom end of the upper screw mandrel 33 or the top end of the lower screw mandrel 34, and a drive gear 38 is affixed to the rotating shaft of the drive motor 35 to drive The gear 38 keeps meshing with the transmission gear 37. In order to ensure that the driving motor 35 is stably installed in the upper casing 4 and can transmit power stably, the driving gear 38 and the transmission gear 37 all adopt bevel gears.

When the drive motor 35 works and drives the upper screw mandrel 33 and the lower screw mandrel 34 to rotate, the lower screw mandrel 34 drives the sliding plate 2 and the lower housing 5 thereon to move upwards, and the upper screw mandrel 33 drives the mounting rod 7 to move downwards, by The sample storage cylinder 3 fixed by the lower casing 5 and its upper and lower positioning rings 20 goes up and is fixed with the upper positioning ring 30 on the upper casing 4, and the sample storage cylinder 3 is effectively fixed at the same time, and the rod 7 and the detection sensors installed on it are installed at the same time Extend down into the sample storage cylinder 3 to detect the gas sample therein.

In order to facilitate the stable control of the working state of the driving motor 35 and the air pump 8, a touch display screen 39 is fixedly installed on the outer wall of the upper casing 4, and a battery 40 is installed inside the upper casing 4, and the battery 40 is connected to the driving motor 35 and the air pump. 8 is electrically connected to supply power to it, and the control module of the drive motor 35 and the air pump 8 is connected to the touch screen 39 for signal connection, and the operation status of the drive motor 35 and the air pump 8 is controlled by operating the touch screen 39 .

At the same time, each detection sensor is signal-connected to the touch screen 39 , and the touch screen 39 displays the corresponding data detected by each detection sensor.

When the particle detection and sampling device disclosed in this application is in use, the empty and clean sample storage cylinder 3 is first fixed to the lower positioning ring 20 on the lower casing 5, and the drive motor 35 is started to drive the sliding plate 2 and the lower casing 5. While going up, the installation rod 7 is driven downward to extend into the sample storage cylinder 3. When the upper sealing cover 24 on the top of the sample storage cylinder 3 is plugged and positioned in the upper positioning ring 30, the drive motor 35 is controlled to stop.

Then, start the air pump 8 to suck the external air into the sample storage cylinder 3, and at the same time, the air pressure sensor detects the air pressure change in the sample storage cylinder 3. When the air pressure reaches the set level, the air suction pump 8 is controlled to close, and the electronic switch valve is closed at the same time. 12, to avoid leakage of gas samples.

Finally, the gas sample in the sample storage tank 3 is detected by the PM2.5 sensor and the PM10 sensor.

After the detection is completed, the drive motor 35 is controlled to work in reverse, so that the upper shell 4 and the lower shell 5 are separated from each other, and the sample storage cylinder 3 is taken out, and the gas sample in the sample storage cylinder 3 can also be used for further detection such as component analysis. .

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (5)

1. The utility model provides a particulate matter detects and sampling device which characterized in that: the sampling device comprises a fixed plate (1), a sliding plate (2), a sample storage cylinder (3), a detection part, a sampling part and a driving mechanism, wherein the top end of the fixed plate (1) is fixedly connected with an upper shell (4), the sliding plate (2) is slidably arranged in the fixed plate (1), and the bottom end of the sliding plate (2) is fixedly connected with a lower shell (5) arranged below the fixed plate (1); the sample storage barrel (3) is arranged between the upper shell (4) and the lower shell (5), the detection part comprises an upper sliding seat (6), an installation rod (7) and a detection sensor, the upper sliding seat (6) is slidably installed in the upper shell (4), the top end of the installation rod (7) is fixedly connected with the upper sliding seat (6), the bottom of the installation rod (7) extends into the inner cavity of the sample storage barrel (3), and the detection sensor is fixedly installed at the bottom of the installation rod (7); the sampling part comprises an air suction pump (8), an air delivery port (9) and an air suction port (10), the air delivery port (9) is fixedly connected to the top of the lower shell (5) and communicated with the sample storage barrel (3), the air suction port (10) is fixedly connected to the side wall of the lower shell (5) and communicated with the external environment, and the air suction pump (8) is fixedly arranged in the lower shell (5) and communicated with the air delivery port (9) and the air suction port (10); the driving mechanism is arranged in the upper shell (4) in a matching way and keeps linkage with the sliding plate (2) and the upper sliding seat (6).

2. The particulate detection and sampling device of claim 1, wherein: the bottom of the sample storage barrel (3) is connected with a lower sealing cover (13) in a screwed mode, the center of the lower surface of the lower sealing cover (13) is provided with a mounting groove (14), the center of the mounting groove (14) is provided with a splicing groove, a splicing seat (15) is installed in the mounting groove (14) in a sliding mode, a splicing rod (16) installed in the splicing groove in a sliding mode is fixedly connected to the center of the splicing seat (15), a supporting spring (17) abutting against the splicing seat (15) is arranged in the mounting groove (14), a first passage (18) is formed in the splicing rod (16) and the splicing seat (15), the upstream end of the first passage (18) is arranged on the lower surface of the splicing seat (15), the downstream end of the first passage (18) is arranged on the side wall of the splicing rod (16), a second passage (19) is formed in the lower sealing cover (13), the upstream end of the second passage (19) is arranged on the side wall of the splicing groove, and the downstream end of the second passage (19) is arranged on the upper surface of the lower sealing cover (13); the top of the lower shell (5) is fixedly connected with a lower positioning ring (20) which is in nested clamping connection with a lower sealing cover (13), the air transmission port (9) is arranged at the center of the lower positioning ring (20), and the air transmission port (9) is nested and inserted with the upstream end of the first passage (18).

3. The particulate detection and sampling device of claim 1, wherein: the utility model discloses a sensor detection device, including installation pole (7), last shell (4) bottom rigid coupling has arranged in installation pole (7) outlying collar (22), and the rigid coupling has and pastes clearance cotton (23) of arranging with each detection sensor mutually that the multiunit evenly arranges on the lateral wall of installation pole (7) bottom all installs in each group mounting hole (21) detection sensor, go up shell (4) bottom rigid coupling.

4. The particulate detection and sampling device of claim 3, wherein: the top of the sample storage barrel (3) is connected with an upper sealing cover (24) in a screwed mode, a plug-in port (25) is formed in the center of the upper sealing cover (24), a plurality of groups of guide columns (26) which are vertically arranged and arranged on the inner side of the sample storage barrel (3) are fixedly connected to the lower surface of the upper sealing cover (24), the bottom ends of the guide columns (26) are fixedly connected through a connecting seat (27), a sealing plug (28) is connected to the plug-in port (25) in a sealed and plugged mode, the sealing plug (28) is combined with the guide columns (26) in a sliding mode, a reset spring (29) is arranged on the outer side of each guide column (26), and the two ends of each reset spring (29) are respectively fixedly connected with the connecting seat (27) and the sealing plug (28); an upper positioning ring (30) nested with the upper sealing cover (24) is fixedly connected to the bottom of the mounting ring (22), and the bottom end of the mounting rod (7) is vertically arranged with the plug interface (25) and abuts against the sealing plug (28).

5. The particulate detection and sampling device of claim 1, wherein: a sliding cavity (31) is formed in the fixed plate (1), a lower sliding seat (32) is fixedly connected to the top end of the sliding plate (2), and the lower sliding seat (32) and the sliding plate (2) are both slidably mounted in the sliding cavity (31); the driving mechanism comprises an upper screw rod (33), a lower screw rod (34) and a driving motor (35), the upper screw rod (33) is rotatably installed in the upper shell (4) and keeps screwed connection with the upper sliding seat (6), the lower screw rod (34) is rotatably installed in the sliding cavity (31) and keeps screwed connection with the lower sliding seat (32), and the driving motor (35) is fixedly installed in the upper shell (4) and is in power connection with the upper screw rod (33) and the lower screw rod (34).

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