Sampling head and sampling device for monitoring waste gas of stationary pollution source

Abstract

The utility model relates to a stationary pollution source waste gas monitoring sampling head and sampling device, including liquid bottle, connecting part, sampling tube, filter cartridge and mounting part, liquid bottle is transparent material, be equipped with reference line on the liquid bottle, the volume of liquid bottle's inner cavity is the same on the part of reference line both sides, the volume of mounting part is the same, and the sampling tube is equipped with the filter cartridge. The direction of an inlet of the sampling pipe is perpendicular to a reference line, the sampling pipe is fixedly connected with one end of the connecting part, the filter cartridge is fixedly connected with one end, opposite to the inlet, of the sampling pipe, the other end of the connecting part is fixedly connected with a liquid bottle, and the mounting part is used for fixedly mounting the sampling pipe on a sampling gun. When in use, the liquid bottle is positioned outside the discharge pipe, and an operator can conveniently determine whether the inlet of the sampling head is in a state of accurately facing airflow or backing against the airflow by observing whether the liquid level of the liquid in the liquid bottle is flush with the reference line or not.

Description

Technical Field

[0001] This utility model relates to the field of waste gas sampling technology, specifically to a sampling head and sampling device for monitoring waste gas from stationary pollution sources. Background Technology

[0002] Stationary pollution source exhaust gas monitoring refers to the activity of collecting samples of exhaust gas emitted from fixed locations or facilities such as industrial production, heating and power generation, at locations such as exhaust gas emission pipelines, and using physical, chemical, and instrumental analysis methods to quantitatively or qualitatively analyze the composition and content of gaseous pollutants, particulate matter, etc., and to monitor indicators such as emission rate and emission concentration in order to determine whether it meets environmental protection standards, assess the impact on the environment, and provide scientific basis for environmental management, pollution control, and law enforcement supervision.

[0003] Most current exhaust gas pipelines are constructed vertically to ensure smooth upward discharge of exhaust gas. When sampling exhaust gas from stationary pollution sources with low concentrations of particulate matter, the exhaust gas in the pipeline is drawn into an absorption bottle connected to the sampling gun, and the dust particles in the pipeline are collected into the filter cartridge of the sampling head. The specific steps for sampling exhaust gas from stationary pollution sources with low concentrations of particulate matter are as follows: First, preheat the sampling gun to the specified temperature, conduct tests, and select a sampling head of appropriate diameter based on the test results. Install the sampling head on the sampling gun. After adjusting the sampler, push the sampling gun to fully insert the sampling head into the exhaust pipeline through the window opened on the side wall, with the sampling head inlet facing downwards so that the inlet faces the airflow. Then, turn on the sampler to extract the air for sampling. After sampling, rotate the sampling gun and sampling head so that the inlet of the sampling head faces upwards so that the inlet faces away from the airflow in the exhaust pipeline. Then, turn off the sampler and quickly pull the sampling head out of the exhaust pipeline. By directing the sampling head inlet away from the airflow in the discharge pipe, the disturbance of the airflow in the discharge pipe on the dust particles on the filter cartridge can be reduced, thereby reducing the amount of dust particles falling off the filter cartridge and reducing the amount of dust particles lost from the filter cartridge.

[0004] However, because the sampling head is fully inserted into the discharge pipe through the window opened on the side wall of the discharge pipe, it is not easy for the operator to observe the sampling head. The operator cannot easily determine whether the inlet of the sampling head is in a state of facing downward or upward, that is, it is not easy for the operator to determine whether the inlet of the sampling head is in a state of facing or away from the airflow. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a sampling head and sampling device for monitoring exhaust gas from stationary pollution sources, so as to solve the technical problem that when sampling exhaust gas from stationary pollution sources with low concentrations of particulate matter, it is inconvenient for operators to determine whether the inlet of the sampling head is in a state of accurately facing or away from the airflow.

[0006] This utility model provides a sampling head for monitoring exhaust gas from a stationary pollution source, comprising a liquid bottle, a connecting part, a sampling tube, a filter cartridge, and an installation part. The liquid bottle is made of transparent material and has a reference line. The internal cavity of the liquid bottle has the same volume on both sides of the reference line. The inlet of the sampling tube is perpendicular to the reference line. The sampling tube is fixedly connected to one end of the connecting part, and the filter cartridge is fixedly connected to the end of the sampling tube facing away from the inlet. The other end of the connecting part is fixedly connected to the liquid bottle. The installation part is used to fix the sampling tube on a sampling gun.

[0007] Furthermore, the connecting part includes a support rod and a rod body, one end of the support rod is fixedly connected to the sampling tube, and one end of the rod body is fixedly connected to the other end of the support rod; the liquid bottle is fixedly connected to the other end of the rod body.

[0008] Furthermore, the rod is a structure that can extend and retract along its axial direction.

[0009] Furthermore, the rod body includes a tube, an inner rod, and a first bolt. One end of the tube is fixedly connected to the other end of the support rod. One end of the inner rod is located inside the tube, and the other end of the inner rod extends out of the tube through the other end of the tube. The inner rod mates with the inner cavity of the tube. A first screw hole is provided on the side wall of the other end of the tube. The screw-in end of the first bolt is screwed into the first screw hole and abuts against the inner rod. The liquid bottle is fixedly connected to the other end of the inner rod. A guide strip is fixedly provided on the inner wall of the tube. A guide groove is recessed at the position corresponding to the guide strip on the inner rod. The guide groove is parallel to the tube, and the guide strip slides within the guide groove.

[0010] Furthermore, the liquid bottle is provided with a bottle mouth, and a bottle cap is provided inside the bottle mouth. The bottle cap is detachably and fixedly connected to the liquid bottle and closes the bottle mouth.

[0011] Furthermore, the liquid bottle is detachably and fixedly connected to the inner rod.

[0012] Furthermore, a rod is fixedly connected to the liquid bottle, and a slot is formed by a recess on the other end face of the inner rod. A limiting groove is formed by a recess on the inner peripheral wall of the slot. The limiting groove is arranged parallel to the axis of the slot. The rod is slidably fitted in the slot. A limiting strip is slidably fitted in the slot. The limiting strip is fixedly connected to the rod. The bottle also includes a fixing member for fixing the rod in the slot.

[0013] Furthermore, a second screw hole is formed on the inner rod, one end of the second screw hole is connected to the slot and the other end is connected to the outer surface of the inner rod. The fixing member includes a second bolt, which is screwed into the second screw hole, and the screw-in end of the second bolt abuts against the insertion rod.

[0014] Furthermore, the mounting part includes a fixing ring, a sleeve, and a sealing plate. The fixing ring is fixedly connected to the inlet of the sampling gun and has an external thread. The sleeve has an internal thread, and one end of the sleeve is threaded to the fixing ring. The sealing plate is fixedly connected to the other end of the sleeve and seals the other end of the sleeve. A through hole is formed on the sealing plate, and the sealing plate is fixedly connected to the outlet end of the sampling tube. The through hole is directly opposite the outlet of the sampling tube. The filter cartridge is located inside the sleeve, and the filter cartridge cooperates with the inner cavity of the sleeve.

[0015] This utility model also provides a sampling device for monitoring exhaust gas from stationary pollution sources, including the sampling head described above.

[0016] The beneficial effects of this utility model are as follows:

[0017] When using the sampling head for monitoring exhaust gas from stationary pollution sources as described in this utility model, the liquid bottle is located outside the discharge pipe. By observing whether the liquid level in the liquid bottle is level with the reference line, the operator can very intuitively determine whether the inlet of the sampling head is in a state of accurate downward or upward orientation. In other words, the operator can easily determine whether the inlet of the sampling head is in a state of accurate orientation towards or away from the airflow.

[0018] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the sampling head for monitoring exhaust gas from stationary pollution sources, installed on a sampling tube.

[0020] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a cross-sectional schematic diagram of the sampling head for monitoring exhaust gas from stationary pollution sources of this utility model, installed on a sampling tube.

[0022] Figure 4 This utility model Figure 3Enlarged view of point B in the middle.

[0023] In the diagram: 1. Liquid bottle; 11. Reference line; 12. Bottle cap; 2. Connecting part; 21. Support rod; 22. Rod body; 221. Tube body; 222. First bolt; 223. Inner rod; 2231. Guide groove; 2232. Second bolt; 3. Sampling tube; 4. Mounting part; 41. Sleeve; 411. Sealing plate; 42. Fixing ring; 5. Sampling gun; 6. Filter cartridge. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0029] Please see Figure 1-4This utility model provides a technical solution: a sampling head for monitoring exhaust gas from a fixed pollution source. It includes a liquid bottle 1, a connecting part 2, a sampling tube 3, a filter cartridge 6, and a mounting part 4. The liquid bottle 1 is made of transparent material and has a reference line 11. The internal cavity of the liquid bottle 1 has the same volume on both sides of the reference line 11. The inlet of the sampling tube 3 is perpendicular to the reference line 11. The sampling tube 3 is fixedly connected to one end of the connecting part 2. The filter cartridge 6 is fixedly connected to the end of the sampling tube 3 facing away from the inlet. The filter cartridge 6 can be a commonly used air filter cartridge. The other end of the connecting part 2 is fixedly connected to the liquid bottle 1. The mounting part 4 is used to fix the sampling tube 3 onto a sampling gun 5. Specifically, the liquid in the liquid bottle 1 can be water.

[0030] Before using the sampling head for monitoring exhaust gas from a fixed pollution source as described in this utility model, ensure that the liquid bottle 1 contains liquid, with the amount of liquid being half the internal capacity of the liquid bottle 1. Then, preheat the sampling gun 5 to the specified temperature. After adjusting the sampler, the operator installs the sampling tube 3 onto the sampling gun 5 via the mounting part 4.

[0031] Open the window on the side wall of the discharge pipe, and the operator pushes the sampling gun 5 through the window. The sampling gun 5 pulls the sampling tube 3 into the interior of the discharge pipe, with the liquid bottle 1 located outside the discharge pipe. Rotate the sampling gun 5 so that the inlet of the sampling tube 3 faces downwards, i.e., towards the airflow inside the discharge pipe. During rotation, the sampling gun 5 drives the sampling tube 3 to rotate, which in turn drives the connecting part 2 and the liquid bottle 1 to rotate. The position of the liquid in the liquid bottle 1 relative to the reference line 11 will change. Stop rotating the sampling gun 5 when the liquid level in the liquid bottle 1 is flush with the reference line 11. At this point, the inlet of the sampling tube 3 is completely downwards, meaning the inlet of the sampling head is accurately facing the airflow direction. Then, turn on the sampler to sample the exhaust gas in the discharge pipe. The exhaust gas in the discharge pipe is drawn into the sampling gun 5 through the inlet of the sampler. When it passes through the filter cartridge 6, the filter cartridge 6 collects particulate matter in the exhaust gas. Finally, the drawn-out exhaust gas is collected in the absorption bottle through the sampling gun 5.

[0032] After sampling, rotate the sampling gun 5 and sampling head, turning the inlet of the sampling head upwards, i.e., away from the airflow in the discharge pipe. During rotation, the sampling gun 5 again drives the sampling gun 5, connecting part 2, and liquid bottle 1 to rotate, causing the position of the liquid in the liquid bottle 1 relative to the reference line 11 to change. When the liquid level in the liquid bottle 1 is once again aligned with the reference line 11, stop rotating the sampling gun 5. At this time, the inlet of the sampling tube 3 is completely upwards, meaning the inlet of the sampling head is accurately positioned away from the airflow. This reduces the disturbance of the airflow in the discharge pipe on the dust particles on the filter cartridge 6, thereby reducing the amount of dust particles falling from the filter cartridge 6 and minimizing the loss of dust particles collected by the filter cartridge 6. Then, turn off the sampler and quickly pull the sampling head out of the discharge pipe. At this point, the sampling of the exhaust gas in the discharge pipe is complete.

[0033] When using the sampling head for monitoring exhaust gas from a stationary pollution source as described in this utility model, the liquid bottle 1 is located outside the discharge pipe. By observing whether the liquid level in the liquid bottle 1 is flush with the reference line 11, the operator can intuitively determine whether the inlet of the sampling head is in a state of accurate downward or upward orientation. In other words, the operator can easily determine whether the inlet of the sampling head is in a state of accurate orientation towards or away from the airflow.

[0034] In this embodiment: the connecting part 2 includes a support rod 21 and a rod body 22. One end of the support rod 21 is fixedly connected to the sampling tube 3, and one end of the rod body 22 is fixedly connected to the other end of the support rod 21; the liquid bottle 1 is fixedly connected to the other end of the rod body 22. With this structure, the sampling tube 3 can be connected to the liquid bottle 1 through the connecting part 2.

[0035] In this embodiment, the rod 22 is axially extendable. Before sampling, the length of the rod 22 is adjusted to extend it, thereby allowing the liquid bottle 1 to be further away from the sampling tube 3. After the sampling tube 3 enters the discharge pipe through the window, the liquid bottle 1 can be positioned further away from the window, allowing the operator to observe the liquid bottle 1 from a distance from the discharge pipe. When observing the liquid bottle 1, the discomfort caused to the operator by the exhaust gas escaping from the window of the discharge pipe can be reduced.

[0036] In this embodiment: the rod 22 includes a tube 221, an inner rod 223, and a first bolt 222. One end of the tube 221 is fixedly connected to the other end of the support rod 21. One end of the inner rod 223 is located inside the tube 221, and the other end of the inner rod 223 extends through the other end of the tube 221 to the outside of the tube 221. The inner rod 223 cooperates with the inner cavity of the tube 221. A first screw hole is provided on the side wall of the other end of the tube 221. The screw-in end of the first bolt 222 is screwed into the first screw hole and abuts against the inner rod 223. The liquid bottle 1 is fixedly connected to the other end of the inner rod 223. A guide strip is fixedly provided on the inner wall of the tube 221. A guide groove 2231 is recessed at the position corresponding to the guide strip on the inner rod 223. The guide groove 2231 is parallel to the tube 221, and the guide strip is slidably engaged in the guide groove 2231.

[0037] In the initial state, the screw-in end of the first bolt 222 is screwed into the first screw hole and abuts against the inner rod 223.

[0038] When it is necessary to adjust the length of the rod 22, the first bolt 222 is unscrewed from the first screw hole, and the screw-in end of the first bolt 222 is away from the inner rod 223. At this time, the inner rod 223 can be slid in the tube 221 to adjust the length of the rod 22.

[0039] When the inner rod 223 slides inside the tube body 221, the inner rod 223 drives the guide strip to slide inside the guide groove 2231, so that the inner rod 223 slides parallel to the tube body 221 when it slides inside the tube body 221, so that the reference line 11 on the liquid bottle 1 is always perpendicular to the inlet of the sampling tube 3.

[0040] With this structure, the rod 22 can be a structure that can extend and retract along its axial direction.

[0041] In this embodiment: the liquid bottle 1 is provided with a bottle mouth, and a bottle cap 12 is provided inside the bottle mouth. The bottle cap 12 is detachably and fixedly connected to the liquid bottle 1 and closes the bottle mouth. Specifically, the bottle cap 12 can be a screw cap, which can be detachably and fixedly connected to the liquid bottle 1 by means of a threaded connection.

[0042] The cap 12 can be removed from the liquid bottle 1, allowing liquid to be poured into the bottle through the opening. After sampling, the cap 12 can be removed from the liquid bottle 1, and the liquid can be poured out through the opening, preventing the liquid from remaining in the liquid bottle 1 for an extended period and thus preventing it from spoiling and becoming smelly.

[0043] In this embodiment, the liquid bottle 1 is detachably and fixedly connected to the inner rod 223. When the reference line 11 becomes blurred due to prolonged use, the liquid bottle 1 can be removed to facilitate replacement with a new liquid bottle 1.

[0044] In this embodiment: a plug rod is fixedly connected to the liquid bottle 1, and a slot is formed by recessing the other end face of the inner rod 223. A limiting groove is formed by recessing the inner peripheral wall of the slot. The limiting groove is arranged parallel to the axis of the slot. The plug rod is slidably fitted in the slot. A limiting strip is slidably fitted in the slot. The limiting strip is fixedly connected to the plug rod. A fixing member is also included, which is used to fix the plug rod in the slot.

[0045] In the initial state, the insertion rod is located in the slot, the limiting strip is located in the limiting groove, and the fixing member fixes the insertion rod in the slot. At this time, the liquid bottle 1 is fixedly connected to the rod body 22.

[0046] When it is necessary to disassemble the liquid bottle 1, release the fixing member and slide the insert rod and limiting strip out of the slot. At this time, the liquid bottle 1 can be detached from the rod body 22. With this structure, the liquid bottle 1 can be detachably and fixedly connected to the inner rod 223.

[0047] In this embodiment: a second screw hole is formed on the inner rod 223, one end of the second screw hole is connected to the slot, and the other end is connected to the outer surface of the inner rod 223. The fixing member includes a second bolt 2232, which is screwed into the second screw hole, and the screw-in end of the second bolt 2232 abuts against the insertion rod. With this structure, the fixing member can fix the insertion rod in the slot.

[0048] In this embodiment: the mounting part 4 includes a fixing ring 42, a sleeve 41, and a sealing plate 411. The fixing ring 42 is fixedly connected to the inlet of the sampling gun 5. Specifically, the fixing ring 42 may be welded to the sampling gun 5. The fixing ring 42 is provided with an external thread, and the sleeve 41 is provided with an internal thread. One end of the sleeve 41 is threadedly connected to the fixing ring 42. The sealing plate 411 is fixedly connected to the other end of the sleeve 41 and closes the other end of the sleeve 41. A through hole is formed on the sealing plate 411. The sealing plate 411 is fixedly connected to the outlet end of the sampling tube 3, and the through hole is directly opposite the outlet of the sampling tube 3. The filter cartridge 6 is located inside the sleeve 41, and the filter cartridge 6 cooperates with the inner cavity of the sleeve 41.

[0049] Before sampling, the operator threaded one end of the sleeve 41 onto the fixing ring 42. At this time, the sampling tube 3 can be fixedly connected to the sampling gun 5. With this structure, the mounting part 4 can fix the sampling tube 3 onto the sampling gun 5.

[0050] This utility model also provides a technical solution: a sampling device for monitoring exhaust gas from stationary pollution sources, including the above-mentioned sampling head.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A sampling head for monitoring exhaust gas from stationary pollution sources, characterized in that: The device includes a liquid bottle (1), a connecting part (2), a sampling tube (3), a filter cartridge (6), and a mounting part (4). The liquid bottle (1) is made of transparent material and has a reference line (11) on it. The volume of the inner cavity of the liquid bottle (1) on both sides of the reference line (11) is the same. The inlet of the sampling tube (3) is perpendicular to the reference line (11). The sampling tube (3) is fixedly connected to one end of the connecting part (2). The filter cartridge (6) is fixedly connected to the end of the sampling tube (3) facing away from the inlet. The other end of the connecting part (2) is fixedly connected to the liquid bottle (1). The mounting part (4) is used to fix the sampling tube (3) on the sampling gun (5).

2. The sampling head for monitoring exhaust gas from stationary pollution sources according to claim 1, characterized in that: The connecting part (2) includes a support rod (21) and a rod body (22). One end of the support rod (21) is fixedly connected to the sampling tube (3), and one end of the rod body (22) is fixedly connected to the other end of the support rod (21). The liquid bottle (1) is fixedly connected to the other end of the rod body (22).

3. The sampling head for monitoring exhaust gas from stationary pollution sources according to claim 2, characterized in that: The rod (22) is a structure that can extend and retract along its axial direction.

4. The sampling head for monitoring exhaust gas from stationary pollution sources according to claim 3, characterized in that: The rod (22) includes a tube (221), an inner rod (223), and a first bolt (222). One end of the tube (221) is fixedly connected to the other end of the support rod (21). One end of the inner rod (223) is located inside the tube (221), and the other end of the inner rod (223) passes through the other end of the tube (221) to the outside of the tube (221). The inner rod (223) cooperates with the inner cavity of the tube (221). The side wall of the other end of the tube (221) is provided with... A first screw hole is provided, and the screw-in end of the first bolt (222) is screwed into the first screw hole and abuts against the inner rod (223); the liquid bottle (1) is fixedly connected to the other end of the inner rod (223); a guide strip is fixedly provided on the inner wall of the tube body (221), and a guide groove (2231) is recessed at the position corresponding to the guide strip on the inner rod (223). The guide groove (2231) is arranged parallel to the tube body (221), and the guide strip is slidably fitted in the guide groove (2231).

5. The sampling head for monitoring exhaust gas from stationary pollution sources according to claim 1, characterized in that: The liquid bottle (1) is provided with a bottle mouth, and a bottle cap (12) is provided inside the bottle mouth. The bottle cap (12) is detachably and fixedly connected to the liquid bottle (1) and closes the bottle mouth.

6. The sampling head for monitoring exhaust gas from stationary pollution sources according to claim 4, characterized in that: The liquid bottle (1) is detachably and fixedly connected to the inner rod (223).

7. The sampling head for monitoring exhaust gas from stationary pollution sources according to claim 6, characterized in that: A plug rod is fixedly connected to the liquid bottle (1). The other end face of the inner rod (223) is recessed to form a slot. A limiting groove is recessed on the inner peripheral wall of the slot. The limiting groove is arranged parallel to the axis of the slot. The plug rod is slidably fitted in the slot. A limiting strip is slidably fitted in the slot. The limiting strip is fixedly connected to the plug rod. The device also includes a fixing member for fixing the plug rod in the slot.

8. The sampling head for monitoring exhaust gas from stationary pollution sources according to claim 7, characterized in that: A second screw hole is formed on the inner rod (223). One end of the second screw hole is connected to the slot and the other end is connected to the outer surface of the inner rod (223). The fastener includes a second bolt (2232). The second bolt (2232) is screwed into the second screw hole, and the screw-in end of the second bolt (2232) abuts against the insert rod.

9. The sampling head for monitoring exhaust gas from stationary pollution sources according to claim 1, characterized in that: The mounting part (4) includes a fixing ring (42), a sleeve (41), and a sealing plate (411). The fixing ring (42) is fixedly connected to the inlet of the sampling gun (5). The fixing ring (42) is provided with an external thread, and the sleeve (41) is provided with an internal thread. One end of the sleeve (41) is threadedly connected to the fixing ring (42). The sealing plate (411) is fixedly connected to the other end of the sleeve (41) and closes the other end of the sleeve (41). A perforation is formed on the sealing plate (411). The sealing plate (411) is fixedly connected to the outlet end of the sampling tube (3). The perforation is directly opposite the outlet of the sampling tube (3). The filter cartridge (6) is located inside the sleeve (41), and the filter cartridge (6) cooperates with the inner cavity of the sleeve (41).

10. A sampling device for monitoring exhaust gas from stationary pollution sources, characterized in that: Includes the sampling head according to any one of claims 1-9.

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