Solid particulate matter sampling device

Through the scale line and motor-driven screw system, combined with the baffle and conductive block signals, accurate sampling of the solid particle sampling device is achieved, solving the problems of sampling depth error and upper material contamination, and ensuring the accuracy and representativeness of the sample.

CN223485531UActive Publication Date: 2025-10-28GUIZHOU UNIV
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Patent Information

Application Number
CN202422825103.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-20
Publication Date
2025-10-28
Estimated Expiration
2034-11-20

AI Technical Summary

Technical Problem

Existing solid particle sampling devices rely on workers' experience to judge the sampling depth, resulting in large errors. In addition, when the sampling tube moves in the material, the upper layer of material enters, affecting the accuracy of the sample.

Method used

The scale line indicates the position of the fastening block, and the motor drives the screw to rotate to achieve precise depth control. The baffle and conductive block signal transmission ensure that the sampling barrel stays at the specified depth, and the spiral blade makes the sample rise to prevent the upper material from entering.

Benefits of technology

The precise control of sampling depth and sample accuracy is achieved, ensuring sample representativeness and reducing human errors and upper material contamination.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a solid particulate matter sampling device, relates to the technical field of sampling devices, and solves the problems that errors exist when the depth of a sampling barrel in a material is judged by naked eyes of a worker, and the material on the upper layer enters the sampling barrel in the process that the sampling barrel moves downwards in the material. The utility model discloses a solid particulate matter sampling device and a use method thereof. Two groups of connecting holes are symmetrically formed in the surface of the base plate, and two handles are mounted on the surface of the base plate; the supporting plate is fixedly installed on the upper end face of the base plate. According to the utility model, a conductive block at the top end of a sliding rod is inserted into a slot in a plugboard, two ends of the conductive block are attached to two conductive circular plates, at the moment, a signal transmitter and a power supply assembly are in a power-on state, the signal transmitter transmits a signal to a control terminal, and after the control terminal receives the signal, a first motor stops running; at the moment, the collecting barrel stops moving downwards, and fixed-point sampling is achieved.
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Description

Technical Field

[0001] This utility model belongs to the field of sampling device technology, specifically a solid particulate matter sampling device. Background Technology

[0002] Before industrial production, the quality of raw materials needs to be tested, which involves sampling. However, due to the deep and uneven thickness of the accumulated granular materials, it is necessary to sample materials at different depths separately in order to ensure the representativeness of the sampling.

[0003] However, existing solid particulate matter sampling devices still have the following two drawbacks when in use:

[0004] First, when sampling materials at different depths, it is necessary to insert the sampling tube (or other sampling tool) into the material layer at different depths. Currently, the depth of the sampling tube (or other sampling tool) in the material is determined solely by the worker's eyesight or experience, which leads to errors.

[0005] Secondly, as the sampling tube (or other sampling tool) moves downwards in the material, some material from the upper layer will enter the sampling tube, which makes the sample inaccurate. The sample taken cannot well represent the solid particles at that depth, thus affecting the accuracy of the feedback data. Summary of the Invention

[0006] The purpose of this invention is to address the above-mentioned problems by providing a solid particulate matter sampling device. This invention solves the problems of relying on workers' visual judgment of the depth of the sampling cylinder in the material, which leads to errors, and the problem that during the downward movement of the sampling cylinder in the material, material from the upper layer may enter the sampling cylinder, resulting in inaccurate samples.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a solid particulate matter sampling device, comprising: a substrate;

[0008] The substrate has two sets of symmetrical connection holes on its surface, and two handles are installed on its surface.

[0009] A support plate is fixedly installed on the upper surface of the substrate, and a placement plate is fixedly installed on the upper end of the support plate. A vertical slot is provided in the middle of the surface of the support plate.

[0010] The first motor is fixedly mounted on the upper surface of the placement plate, and the lower end of the first motor is connected to the first screw, the lower end of the first screw being rotatably connected to the substrate.

[0011] The lifting plate has its inner end face in contact with the support plate, and a limit cylinder is installed on the surface of the lifting plate. The limit cylinder has a thread inside.

[0012] A limiting plate, wherein a connecting block is installed at the middle position of the inner end surface of the limiting plate, and the other end of the connecting block is fixedly connected to the lifting plate. The connecting block is slidably locked in the vertical slot on the surface of the support plate.

[0013] The second motor is fixedly installed on the upper end face of the lifting plate. The lower end of the second motor is connected to a drive shaft, and spiral blades are installed on the outside of the drive shaft.

[0014] A collection cylinder is fixedly installed on the lower end face of the lifting plate. An inclined storage cylinder is installed on the outer end face of the collection cylinder, and a vertical plate is installed on the outer end face of the collection cylinder.

[0015] The protrusion has a tapered lower end face and a connecting rod evenly installed on its upper end face. The upper end of the connecting rod is fixedly connected to the collecting cylinder.

[0016] The hanging plate has an L-shaped structure, with through holes on the vertical surface and through holes on the horizontal surface.

[0017] A fixed frame is fixedly installed on the upper surface of the horizontal plate of the hanging plate. The fixed frame has an inverted U-shaped structure and a warning mechanism is installed on the surface of the fixed frame.

[0018] A sliding rod is slidably fitted into a through hole on the surface of the horizontal plate of the hanging plate, and a baffle is installed on the lower end face of the sliding rod.

[0019] Furthermore, a control terminal is installed on the upper surface of the placement plate, and the control terminal is electrically connected to the first motor.

[0020] Furthermore, a compression spring is sleeved on the outside of the sliding rod. The upper end of the compression spring is fixedly connected to the bottom end of the hanging plate, and the lower end of the compression spring is fixedly connected to the baffle. A conductive block is also installed on the upper end of the sliding rod.

[0021] Furthermore, the warning mechanism includes:

[0022] Insert plate, the insert plate is fixedly installed on the inner end surface of the fixed frame, and the lower end surface of the insert plate has an insertion hole;

[0023] The power supply assembly is fixedly mounted on the upper surface of the fixed frame;

[0024] The conductive circular plate is provided in two symmetrical sets. The conductive circular plate is fixedly installed on the inner end face of the plug plate. The conductive circular plate on the right side is connected to the power supply assembly through wires.

[0025] The signal transmitter is fixedly installed on the outer end face of the fixed frame. The signal transmitter is connected to the conductive circular plate on the left side through wires, and the signal transmitter is connected to the power supply assembly through wires.

[0026] Furthermore, a vertical track groove is provided at the middle position of the outer end face of the vertical plate, and scale lines are also provided on the outer end face of the vertical plate, with the scale lines located on both sides of the vertical track groove.

[0027] Furthermore, a fastening block is slidably fitted inside the vertical track groove, and a fastening screw is fixedly installed on the outer end face of the fastening block. The fastening screw is engaged in the through hole on the surface of the hanging plate.

[0028] Furthermore, the surface of the limiting plate has two limiting holes, and the lower end face of the placement plate is equipped with two limiting rods. The two limiting rods are respectively engaged in the two limiting holes, and the lower end face of the limiting rods is fixedly connected to the substrate.

[0029] Furthermore, two limiting blocks are installed on the inner end face of the lifting plate, and two vertical sliding grooves are opened on the surface of the support plate, with the limiting blocks slidingly engaged in the vertical sliding grooves.

[0030] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0031] In this invention, the fastening block is slidably mounted in the vertical track groove, allowing the fastening block to be moved up and down when sampling materials at different depths. The outer end face of the vertical plate has scale lines, which allow workers to quickly determine the position of the fastening block. Then, the nut on the surface of the fastening screw is tightened to fix the hanging plate. First, the first motor is started, which drives the first screw to rotate. Through the threaded connection between the first screw and the limiting cylinder, the lifting plate and the collecting cylinder will move downward during the rotation of the first screw.

[0032] In addition, when the lower end of the collecting cylinder reaches the designated sampling location, the baffle comes into contact with the particulate material. As the collecting cylinder moves downward, the baffle stops on the surface of the material. At this time, the sliding rod moves upward, and the conductive block at the top of the sliding rod is inserted into the slot inside the insert plate. The two ends of the conductive block are in contact with the two conductive discs. At this time, the signal transmitter and the power supply are energized. The signal transmitter transmits the signal to the control terminal. After receiving the signal, the control terminal will stop the first motor. At this time, the collecting cylinder will stop moving downward.

[0033] Furthermore, due to the spiral structure of the blades, when the second motor drives the blades on the surface of the drive shaft to rotate, the material at the bottom of the collection cylinder will move upward and enter the storage cylinder at the top of the collection cylinder, thereby completing the sampling operation.

[0034] In addition, when the first screw drives the lifting plate to move up and down during rotation, the limiting rod is engaged in the limiting hole on the surface of the limiting plate, so that the lifting plate will not wobble left or right when it moves up and down. The limiting block at the inner end of the lifting plate is engaged in the vertical slide groove, which also plays a limiting role.

[0035] In addition, the lower end of the bump has a conical structure, which allows the bump to penetrate deeper into the solid particles. The bump is connected to the collection cylinder through a connecting rod, so that the material in the upper layer will not enter the collection cylinder during the downward movement of the collection cylinder, thus ensuring the accuracy of the sample. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall device structure of this utility model;

[0037] Figure 2 This is a schematic diagram of the connection structure between the substrate and the support plate of this utility model;

[0038] Figure 3 This is a schematic diagram of the limiting plate and limiting rod structure of this utility model;

[0039] Figure 4 This is a schematic diagram of the collecting cylinder and vertical plate structure of this utility model;

[0040] Figure 5 This is a schematic diagram of the internal structure of the collecting cylinder of this utility model;

[0041] Figure 6 This is an exploded structural diagram of the fastening block and hanging plate of this utility model;

[0042] Figure 7 This is a schematic diagram of the sliding rod and compression spring structure of this utility model;

[0043] Figure 8 For this utility model Figure 7 A magnified view of the structure at point A in the middle;

[0044] Figure 9 This is a schematic diagram of the first motor and the first screw structure of this utility model.

[0045] In the picture:

[0046] 1. Base plate; 101. Connecting hole; 102. Handle; 2. Support plate; 201. Vertical slot; 202. Vertical slide groove; 203. Placement plate; 2031. Limiting rod; 3. First motor; 301. Control terminal; 302. First screw; 4. Lifting plate; 401. Limiting block; 402. Limiting cylinder; 5. Limiting plate; 501. Connecting block; 502. Limiting hole; 6. Second motor; 601. Drive shaft; 6011. Blade; 7. Receiving plate 701. Storage cylinder; 8. Protrusion; 801. Connecting rod; 9. Vertical plate; 901. Scale line; 902. Vertical track groove; 10. Fastening block; 1001. Fastening screw; 11. Hanging plate; 1101. Through hole; 12. Fixing frame; 1201. Insert plate; 13. Sliding rod; 1301. Compression spring; 1302. Baffle; 1303. Conductive block; 14. Power supply assembly; 1401. Conductive circular plate; 1402. Signal transmitter. Detailed Implementation

[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0048] Example: Figures 1 to 9 As shown, this utility model provides a solid particulate matter sampling device, including a substrate 1;

[0049] Two sets of connection holes 101 are symmetrically opened on the surface of substrate 1, and two handles 102 are installed on the surface of substrate 1.

[0050] Support plate 2 is fixedly installed on the upper surface of substrate 1. Placement plate 203 is fixedly installed on the upper end of support plate 2. A vertical slot 201 is opened in the middle of the surface of support plate 2.

[0051] The first motor 3 is fixedly installed on the upper surface of the placement plate 203. The lower end of the first motor 3 is connected to the first screw 302, and the lower end of the first screw 302 is rotatably connected to the base plate 1.

[0052] The lifting plate 4 has its inner end face in contact with the support plate 2. A limit cylinder 402 is installed on the surface of the lifting plate 4, and the inside of the limit cylinder 402 is threaded.

[0053] Limiting plate 5, a connecting block 501 is installed at the middle position of the inner end surface of limiting plate 5, the other end of the connecting block 501 is fixedly connected to lifting plate 4, and the connecting block 501 is slidably locked in the vertical slot 201 on the surface of support plate 2.

[0054] The second motor 6 is fixedly installed on the upper end face of the lifting plate 4. The lower end of the second motor 6 is connected to a drive shaft 601, and a spiral blade 6011 is installed on the outside of the drive shaft 601.

[0055] The collection cylinder 7 is fixedly installed on the lower end face of the lifting plate 4. The outer end face of the collection cylinder 7 is equipped with an inclined storage cylinder 701 and a vertical plate 9.

[0056] The protrusion 8 has a tapered lower end face and a connecting rod 801 is evenly installed on the upper end face of the protrusion 8. The upper end of the connecting rod 801 is fixedly connected to the collecting cylinder 7.

[0057] The hanging plate 11 has an L-shaped structure. The vertical plate surface of the hanging plate 11 has a through hole 1101, and the horizontal plate surface of the hanging plate 11 has a through hole.

[0058] The fixed frame 12 is fixedly installed on the upper surface of the horizontal plate of the hanging plate 11. The fixed frame 12 has an inverted U-shaped structure and a warning mechanism is installed on the surface of the fixed frame 12.

[0059] The sliding rod 13 is slidably mounted in the through hole on the horizontal plate surface of the hanging plate 11, and a baffle 1302 is installed on the lower end face of the sliding rod 13.

[0060] The upper surface of the placement plate 203 is equipped with a control terminal 301, which is electrically connected to the first motor 3. In use, after receiving a signal from the signal transmitter 1402, the control terminal 301 will stop the first motor 3 from running.

[0061] The sliding rod 13 is fitted with a compression spring 1301. The upper end of the compression spring 1301 is fixedly connected to the bottom end of the hanging plate 11, and the lower end of the compression spring 1301 is fixedly connected to the baffle 1302. A conductive block 1303 is also installed on the upper end of the sliding rod 13. In use, when the collecting cylinder 7 has not reached the designated location, the spring force of the compression spring 1301 can ensure that the conductive block 1303 at the top of the sliding rod 13 will not be inserted into the slot inside the insert plate 1201. At this time, the signal transmitter 1402 will not send a signal, which can ensure that the collecting cylinder 7 will continue to descend.

[0062] The vertical plate 9 has a vertical track groove 902 in the middle of its outer end face, and a scale line 901 is also provided on the outer end face of the vertical plate 9. The scale line 901 is located on both sides of the vertical track groove 902. A fastening block 10 is slidably installed inside the vertical track groove 902. A fastening screw 1001 is fixedly installed on the outer end face of the fastening block 10. The fastening screw 1001 is engaged in the through hole 1101 on the surface of the hanging plate 11.

[0063] The technical effect achieved by adopting the above solution is as follows: the fastening block 10 is slidably mounted in the vertical track groove 902, so that the position of the fastening block 10 can be moved up and down when sampling materials at different depths. The outer end face of the vertical plate 9 is provided with a scale line 901. Through the setting of the scale line 901, the worker can quickly determine the position of the fastening block 10, and then tighten the nut on the surface of the fastening screw 1001 to fix the hanging plate 11. Example

[0064] Based on Example 1, such as Figures 1-9 As shown, it also includes: a warning mechanism: a plug plate 1201, which is fixedly installed on the inner end surface of the fixed frame 12, and the lower end surface of the plug plate 1201 has a plug hole; a power supply assembly 14, which is fixedly installed on the upper end surface of the fixed frame 12; two sets of conductive circular plates 1401, which are symmetrically arranged, and are fixedly installed on the inner end surface of the plug plate 1201, with the right conductive circular plate 1401 connected to the power supply assembly 14 via a wire; and a signal transmitter 1402, which is fixedly installed on the outer end surface of the fixed frame 12, and is connected to the left conductive circular plate 1401 via a wire, and is also connected to the power supply assembly 14 via a wire.

[0065] The technical effect achieved by adopting the above scheme is as follows: When the lower end of the collecting cylinder 7 reaches the designated location, the baffle 1302 contacts the granular material. When the collecting cylinder 7 moves downward, the baffle 1302 will stop on the surface of the material. At this time, the sliding rod 13 will move upward, and the conductive block 1303 at the top of the sliding rod 13 will be inserted into the slot inside the insert plate 1201. The two ends of the conductive block 1303 will be in contact with the two conductive circular plates 1401. At this time, the signal transmitter 1402 and the power supply component 14 are in a powered state. The signal transmitter 1402 transmits the signal to the control terminal 301. After receiving the signal, the control terminal 301 will stop the first motor 3. At this time, the collecting cylinder 7 will stop moving downward. Then, the second motor 6 starts. When the second motor 6 drives the blades 6011 on the surface of the drive shaft 601 to rotate, the material at the bottom of the collecting cylinder 7 will move upward and enter the storage cylinder 701 at the top of the collecting cylinder 7, thereby completing the sampling operation. Example

[0066] Based on Example 1, such as Figures 1-9As shown, the inner end face of the lifting plate 4 is also equipped with two limiting blocks 401. The surface of the support plate 2 is provided with two vertical sliding grooves 202. The limiting blocks 401 are slidably locked in the vertical sliding grooves 202. The surface of the limiting plate 5 is provided with two limiting holes 502. The lower end face of the placement plate 203 is equipped with two limiting rods 2031. The two limiting rods 2031 are respectively locked in the two limiting holes 502. The lower end face of the limiting rods 2031 is fixedly connected to the base plate 1.

[0067] The technical effect achieved by adopting the above scheme is as follows: when the first screw 302 drives the lifting plate 4 to move up and down during rotation, the setting of the limiting rod 2031 engaging with the limiting hole 502 on the surface of the limiting plate 5 prevents the lifting plate 4 from swaying left and right during its up and down movement. The limiting block 401 at the inner end of the lifting plate 4 engaging with the vertical slide groove 202 also plays a limiting role.

[0068] The specific usage and function of this embodiment: In this utility model, the fastening block 10 is slidably mounted in the vertical track groove 902, allowing the position of the fastening block 10 to be moved up and down when sampling materials at different depths. The outer end face of the vertical plate 9 has a scale line 901, which allows workers to quickly determine the position of the fastening block 10. Then, the nut on the surface of the fastening screw 1001 is tightened to fix the hanging plate 11. First, the first motor 3 is started, and the first motor 3 drives the first screw 302 to rotate. The threaded connection between the first screw 302 and the limiting cylinder 402 causes the lifting plate 4 and the collecting cylinder 7 to move downwards during the rotation of the first screw 302. When the lower end of the collecting cylinder 7 reaches the designated sampling location, the baffle 1302 contacts the particulate material. As the collecting cylinder 7 moves downwards, the baffle 1302 remains on the surface of the material. At this time, the sliding rod 13 moves upwards, and the conductive block 1303 at the top of the sliding rod 13 inserts into the slot inside the insert plate 1201. The two ends of the conductive block 1303 are in contact with the two conductive circular plates 1401. At this time, the signal... When the transmitter 1402 and power supply assembly 14 are powered on, the signal transmitter 1402 transmits a signal to the control terminal 301. Upon receiving the signal, the control terminal 301 stops the first motor 3, causing the collecting cylinder 7 to stop moving downwards. At this time, the second motor 6 starts. When the second motor 6 drives the blades 6011 on the surface of the drive shaft 601 to rotate, the material at the bottom of the collecting cylinder 7 moves upwards and enters the storage cylinder 701 at the top of the collecting cylinder 7, thus completing the sampling operation. The first screw 302 rotates, causing the lifting plate 4 to move up and down. When the lifting plate 4 moves up and down, the limiting rod 2031 is engaged with the limiting hole 502 on the surface of the limiting plate 5, so that the lifting plate 4 will not swing left and right when it moves up and down. The limiting block 401 at the inner end of the lifting plate 4 is engaged with the vertical slide groove 202, which also plays a limiting role. The lower end of the protrusion 8 has a conical structure, which allows the protrusion 8 to penetrate into the solid particles better. The protrusion 8 is connected to the collection cylinder 7 through the connecting rod 801, so that the upper material will not enter the collection cylinder 7 during the downward movement of the collection cylinder 7, thus ensuring the accuracy of the sample.

Claims

1. A solid particulate matter sampling device, characterized in that: include: Substrate (1); two sets of connecting holes (101) are symmetrically opened on the surface of the substrate (1), and two handles (102) are installed on the surface of the substrate (1); support plate (2), the support plate (2) is fixedly installed on the upper end surface of the substrate (1), and a placement plate (203) is fixedly installed on the upper end of the support plate (2), and a vertical slot (201) is opened in the middle of the surface of the support plate (2); first motor (3), the first motor (3) is fixedly installed on the upper end surface of the placement plate (203), and a first screw (302) is drivenly connected to the lower end of the first motor (3), the first screw (302) The lower end is rotatably connected to the base plate (1); the lifting plate (4), the inner end face of the lifting plate (4) is in contact with the support plate (2), the surface of the lifting plate (4) is equipped with a limit cylinder (402), and the inside of the limit cylinder (402) is threaded; the limit plate (5), a connecting block (501) is installed in the middle position of the inner end surface of the limit plate (5), the other end of the connecting block (501) is fixedly connected to the lifting plate (4), and the connecting block (501) is slidably clamped in the vertical slot (201) on the surface of the support plate (2); the second motor (6), the second motor (6) is fixedly installed on the lifting plate (4) The upper end face of the second motor (6) is connected to the lower end of the drive shaft (601), and the drive shaft (601) is equipped with a spiral blade (6011); the collection cylinder (7) is fixedly installed on the lower end face of the lifting plate (4), and the outer end face of the collection cylinder (7) is equipped with an inclined storage cylinder (701), and the outer end face of the collection cylinder (7) is equipped with a vertical plate (9); the protrusion (8) has a tapered lower end face, and the upper end face of the protrusion (8) is evenly equipped with connecting rods (801), and the upper end of the connecting rods (801) is connected to the collection cylinder (7011). Fixed connection; hanging plate (11), the main body of the hanging plate (11) is an L-shaped structure, the vertical plate surface of the hanging plate (11) is provided with a through hole (1101), and the horizontal plate surface of the hanging plate (11) is provided with a through hole; fixed frame (12), the fixed frame (12) is fixedly installed on the upper surface of the horizontal plate of the hanging plate (11), the fixed frame (12) is an inverted U-shaped structure, and a warning mechanism is installed on the surface of the fixed frame (12); sliding rod (13), the sliding rod (13) is slidably clamped in the through hole on the horizontal plate surface of the hanging plate (11), and a baffle (1302) is installed on the lower end surface of the sliding rod (13).

2. The solid particulate matter sampling device according to claim 1, characterized in that: A control terminal (301) is installed on the upper surface of the placement plate (203), and the control terminal (301) is electrically connected to the first motor (3).

3. A solid particulate matter sampling device according to claim 1, characterized in that: A compression spring (1301) is sleeved on the outside of the sliding rod (13). The upper end of the compression spring (1301) is fixedly connected to the bottom end of the hanging plate (11), and the lower end of the compression spring (1301) is fixedly connected to the baffle (1302). A conductive block (1303) is also installed on the upper end of the sliding rod (13).

4. A solid particulate matter sampling device according to claim 1, characterized in that: The warning agencies include: Insert plate (1201) is fixedly installed on the inner end surface of the fixed frame (12), and the lower end surface of the insert plate (1201) is provided with insertion holes; Power supply assembly (14) is fixedly installed on the upper surface of the fixed frame (12); The conductive circular plate (1401) is provided in two symmetrical sets. The conductive circular plate (1401) is fixedly installed on the inner end face of the plug plate (1201). The conductive circular plate (1401) on the right side is connected to the power supply assembly (14) through a wire. The signal transmitter (1402) is fixedly installed on the outer end face of the fixed frame (12). The signal transmitter (1402) is connected to the conductive circular plate (1401) on the left side through a wire. The signal transmitter (1402) is connected to the power supply assembly (14) through a wire.

5. A solid particulate matter sampling device according to claim 1, characterized in that: A vertical track groove (902) is provided at the middle position of the outer end face of the vertical plate (9), and a scale line (901) is also provided on the outer end face of the vertical plate (9), with the scale line (901) located on both sides of the vertical track groove (902).

6. A solid particulate matter sampling device according to claim 5, characterized in that: The vertical track groove (902) is internally fitted with a fastening block (10), and a fastening screw (1001) is fixedly installed on the outer end face of the fastening block (10). The fastening screw (1001) is engaged in the through hole (1101) on the surface of the hanging plate (11).

7. A solid particulate matter sampling device according to claim 1, characterized in that: The surface of the limiting plate (5) has two limiting holes (502), and the lower end face of the placement plate (203) is equipped with two limiting rods (2031). The two limiting rods (2031) are respectively engaged in the two limiting holes (502), and the lower end face of the limiting rods (2031) is fixedly connected to the substrate (1).

8. A solid particulate matter sampling device according to claim 1, characterized in that: Two limiting blocks (401) are also installed on the inner end face of the lifting plate (4), and two vertical sliding grooves (202) are opened on the surface of the support plate (2). The limiting blocks (401) are slidably locked in the vertical sliding grooves (202).