A waste gas sampling device for industrial waste gas detection

Abstract

The present invention belongs to the technical field of waste gas sampling, and discloses a waste gas sampling device for industrial waste gas detection, and its technical points are: comprising a sampling cylinder, an air inlet cylinder is fixedly installed on the bottom wall of the sampling cylinder, a partition is fixedly installed between the inner wall of the sampling cylinder and the side wall of the air inlet cylinder, and a plurality of groups of dust exhaust grooves distributed in an annular shape are provided on the surface of the partition, a sampling mechanism is arranged in the air inlet cylinder, the sampling mechanism comprises a first air inlet hole, a second sealing plate and an automatic air inlet component, a cleaning mechanism is arranged in the sampling cylinder, the cleaning mechanism comprises a cleaning component and a collecting component, the cleaning component comprises a cleaning rod and a rotating part, and the collecting component comprises a sealing part and a debris exhaust part, so as to solve the problem that dust particles mixed in the waste gas of the existing sampling equipment are easy to adhere to the inner wall of the sampling cylinder and cannot be cleaned, thus affecting the normal use of the equipment and affecting the accuracy of sample detection.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas sampling, in particular to a waste gas sampling device for industrial waste gas detection. Background Art

[0002] A large amount of waste gas is generated in industrial production, including carbon dioxide, carbon disulfide, hydrogen sulfide, fluoride, nitrogen oxides, chlorine, hydrogen chloride, carbon monoxide, lead and mercury sulfate, beryllium, smoke and industrial dust.

[0003] The state has set strict emission standards for waste gas generated in industrial production, requiring enterprises to treat and filter toxic and harmful gases mixed in the waste gas before discharging it. Therefore, it is necessary to sample and test the waste gas at any time to check whether the waste gas meets the emission standards.

[0004] However, when the existing sampling equipment is sampling exhaust gas, the dust particles contained in the exhaust gas are easily attached to the inner wall of the sampling tube and cannot be cleaned. When the staff conducts multiple sampling, as the dust in the sampling tube continues to accumulate, it not only affects the normal use of the equipment, but also affects the accuracy of sample detection. Summary of the invention

[0005] The object of the present invention is to provide a waste gas sampling device for industrial waste gas detection to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A waste gas sampling device for industrial waste gas detection comprises a sampling cylinder, wherein an air intake cylinder extending into the sampling cylinder is fixedly mounted on the bottom wall of the sampling cylinder, an exhaust pipe is fixedly connected to the side wall of the sampling cylinder, a control valve is arranged on the surface of the exhaust pipe, a first sealing plate is slidably mounted between the inner walls of the sampling cylinder, a fixing rod is fixedly connected to the top wall of the first sealing plate, an end of the fixing rod away from the first sealing plate extends to the outside of the sampling cylinder and is fixedly connected to a control disk, a partition is fixedly mounted between the inner wall of the sampling cylinder and the side wall of the air intake cylinder, the partition divides the inner cavity of the sampling cylinder into a dust collecting cavity and a sample cavity, a plurality of dust exhaust grooves distributed in an annular manner are arranged on the surface of the partition, a sampling mechanism is arranged in the air intake cylinder, the sampling mechanism comprises a first air intake hole, a second sealing plate and an automatic air intake assembly, the first air intake hole is arranged at the inlet The top wall of the air cylinder, the second sealing plate is slidably connected to the inner wall of the air inlet cylinder, the surface of the second sealing plate is provided with a second air inlet hole, the automatic air inlet component is located on the surface of the second sealing plate and cooperates with the second air inlet hole, the automatic air inlet component is used to control the exhaust gas to pass through the second sealing plate and then be transported to the sample chamber, a cleaning mechanism is arranged in the sampling cylinder, the cleaning mechanism includes a cleaning component and a collecting component, the cleaning component includes a cleaning rod and a rotating part, a brush is arranged on the surface of the cleaning rod, the rotating part is located on the bottom wall of the first sealing plate and is connected to the cleaning rod, the rotating part is used to control the self-rotation of the cleaning rod, the collecting component is located in the dust exhaust groove on the surface of the partition and is connected to the first sealing plate, the collecting component is used to cooperate with the first sealing plate to adjust the opening and closing state of the dust exhaust groove.

[0008] As a further solution of the present invention: the automatic air intake component includes a first elastic member fixedly installed on the inner top wall of the air intake cylinder, the telescopic end of the first elastic member is fixedly connected to the second sealing plate, the bottom wall of the second sealing plate is provided with multiple groups of mounting grooves distributed in a ring shape around the second air intake hole, a second elastic member is fixedly installed in the mounting groove, the telescopic ends of the second elastic member are jointly fixedly connected to a baffle plate that fits the bottom wall of the second sealing plate, and the inner top wall of the air intake cylinder is fixedly connected to a push rod that cooperates with the baffle plate.

[0009] As a further solution of the present invention: the rotating part includes a placement groove opened on the bottom wall of the first sealing plate, both ends of the cleaning rod are rotatably connected to the placement groove, a control gear disc is fixedly installed on the surface of the cleaning rod, and a gear ring meshing with the control gear disc is fixedly installed on the top wall of the intake cylinder.

[0010] As a further solution of the present invention: the collecting assembly includes a sealing part and a dust removal part, the sealing part is located on the surface of the partition and cooperates with the dust removal groove, the dust removal part is located on the bottom wall of the first sealing plate, the sealing part is used to keep the dust removal groove in a sealed state, and the dust removal part is used to cooperate with the first sealing plate to control the dust removal groove to be in a through state.

[0011] As a further solution of the present invention: the sealing part includes a limit rod fixedly installed on the bottom wall of the partition and located on both sides of the dust discharge groove, the limit rod is slidably connected with a mounting plate, a sealing strip that cooperates with the dust discharge groove is fixedly installed on the surface of the mounting plate, the bottom end of the limit rod is fixedly connected to a third elastic part fixedly connected to the mounting plate, and the sealing strip is connected to the dust discharge part.

[0012] As a further solution of the present invention: the impurity removal part includes a pressure rod fixedly installed on the surface of the sealing strip, and the side wall of the placement groove is fixedly installed with a connecting plate that cooperates with the pressure rod, and the bottom wall of the connecting plate is flush with the bottom wall of the first sealing plate.

[0013] As a further solution of the present invention: a roller which cooperates with the first sealing plate is rotatably mounted on the top end of the pressure rod.

[0014] As a further solution of the present invention: a telescopic mechanism connected to the cleaning rod is arranged in the placement groove, and the telescopic mechanism is used to adjust the relative position between the cleaning rod and the placement groove.

[0015] As a further solution of the present invention: the telescopic mechanism includes sliding grooves respectively opened on the two side walls opposite to the placement groove, a sliding block is slidably installed in the sliding groove, both ends of the cleaning rod are rotatably connected to the sliding block respectively, and a fourth elastic member fixedly installed in the sliding groove and fixedly connected to the sliding block.

[0016] Compared with the prior art, the beneficial effect of the present invention is that by arranging a cleaning assembly composed of a cleaning rod and a rotating part to cooperate with a collecting assembly and a first sealing plate, the dust in the sample chamber can be conveniently cleaned into the dust collecting chamber, which solves the problem that when the existing sampling equipment samples the exhaust gas, the dust particles mixed in the exhaust gas are easy to adhere to the inner wall of the sampling tube and cannot be cleaned. When the staff conducts multiple samplings, as the dust in the sampling tube continues to accumulate, it not only affects the normal use of the equipment, but also affects the accuracy of sample detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a waste gas sampling device for industrial waste gas detection provided in an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of a partition and its connection structure in a waste gas sampling device for industrial waste gas detection provided in an embodiment of the present invention.

[0019] Figure 3 for Figure 1 Schematic diagram of the enlarged structure of A.

[0020] Figure 4 for Figure 1 Schematic diagram of the enlarged structure of B.

[0021] Figure 5 This is a schematic diagram of the external structure of a partition in a waste gas sampling device for industrial waste gas detection provided in an embodiment of the present invention.

[0022] Wherein: sampling cylinder 1, air intake cylinder 2, exhaust pipe 3, control valve 4, first sealing plate 5, partition 6, dust exhaust groove 61, sampling mechanism 7, first air intake hole 71, second sealing plate 72, second air intake hole 721, automatic air intake assembly 73, first elastic member 731, push rod 732, mounting groove 733, second elastic member 734, baffle 735, cleaning mechanism 8, cleaning assembly 81, cleaning rod 811, rotating part 812, placement Groove 8121, control toothed disc 8122, gear ring 8123, collecting assembly 82, sealing portion 821, limiting rod 8211, third elastic member 8212, mounting plate 8213, sealing strip 8214, debris removal portion 822, pressure rod 8221, connecting plate 8222, telescopic mechanism 9, slide groove 91, sliding block 92, fourth elastic member 93, fixing rod 10, control disc 11, dust collecting chamber 12, sample chamber 13, roller 14. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0024] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0025] like Figure 1 , Figure 4 , Figure 5As shown, it is a structural diagram of an exhaust gas sampling device for industrial exhaust gas detection provided by an embodiment of the present invention, including a sampling cylinder 1, the bottom wall of the sampling cylinder 1 is fixedly installed with an air inlet cylinder 2 extending into the sampling cylinder 1, the side wall of the sampling cylinder 1 is fixedly connected with an exhaust pipe 3, the inner wall of the sampling cylinder 1 is fixedly installed with a filter screen that cooperates with the exhaust pipe 3, the surface of the exhaust pipe 3 is provided with a control valve 4, a first sealing plate 5 is slidably installed between the inner walls of the sampling cylinder 1, the top wall of the first sealing plate 5 is fixedly connected with a fixing rod 10, and the fixing rod 10 is away from the first One end of the sealing plate 5 extends to the outside of the sampling cylinder 1 and is fixedly connected to the control disk 11. A partition 6 is fixedly installed between the inner wall of the sampling cylinder 1 and the side wall of the air inlet cylinder 2. The partition 6 divides the inner cavity of the sampling cylinder 1 into a dust collecting chamber 12 and a sample chamber 13. A plurality of groups of dust exhaust grooves 61 distributed in an annular shape are provided on the surface of the partition 6. A sampling mechanism 7 is provided in the air inlet cylinder 2. The sampling mechanism 7 includes a first air inlet hole 71, a second sealing plate 72 and an automatic air inlet component 73. The first air inlet hole 71 is provided on the top wall of the air inlet cylinder 2, and the second sealing plate 72 and the inlet The inner wall of the gas cylinder 2 is slidably connected, and a second air inlet hole 721 is opened on the surface of the second sealing plate 72. The automatic air inlet component 73 is located on the surface of the second sealing plate 72 and cooperates with the second air inlet hole 721. The automatic air inlet component 73 is used to control the exhaust gas to pass through the second sealing plate 72 and then be transported to the sample chamber 13. A cleaning mechanism 8 is provided in the sampling cylinder 1, and the cleaning mechanism 8 includes a cleaning component 81 and a collecting component 82. The cleaning component 81 includes a cleaning rod 811 and a rotating part 812. The surface of the cleaning rod 811 is provided with The brush, the rotating part 812 is located on the bottom wall of the first sealing plate 5 and is connected to the cleaning rod 811, the rotating part 812 is used to control the self-rotation of the cleaning rod 811, the collecting assembly 82 includes a sealing part 821 and a dust removal part 822, the sealing part 821 is located on the surface of the partition 6 and cooperates with the dust removal groove 61, the dust removal part 822 is located on the bottom wall of the first sealing plate 5, the sealing part 821 is used to keep the dust removal groove 61 in a sealed state, and the dust removal part 822 is used to cooperate with the first sealing plate 5 to control the dust removal groove 61 to be in a through state.

[0026] When in use, the exhaust gas discharge pipe is inserted into the air intake tube 2, and the exhaust gas can be conveniently transported to the sample chamber 13 in the sampling tube 1 through the cooperation of the second sealing plate 72 and the automatic air intake assembly 73. The pressing control disk 11 and the fixing rod 10 cooperate with each other to push the first sealing plate 5 to move in the sampling tube 1, and the dust is filtered through the filter net. The exhaust gas sample in the sample chamber 13 can be conveniently transported to the detection bottle through the exhaust pipe 3. When multiple sampling is required, the control disk 11 and the fixing rod 10 cooperate with each other to control the movement of the first sealing plate 5 in the sampling tube 1, and the dust attached to the inner wall of the sampling tube 1 is cleaned by the first sealing plate 5, so that the dust falls on the surface of the partition 6, and the first sealing plate 5 is pushed to move toward the surface of the partition 6. The movement makes the cleaning rod 811 fit with the surface of the partition 6, and the control panel 11 and the fixed rod 10 cooperate with each other to control the rotation of the first sealing plate 5 to drive the cleaning rod 811 to rotate on the surface of the partition 6 to perform preliminary cleaning of the partition 6. The rotating part 812 and the first sealing plate 5 cooperate with each other to control the cleaning rod 811 to rotate while rotating, so as to further improve the cleaning effect. While the cleaning rod 811 is cleaning the partition 6, the first sealing plate 5 cooperates with the sealing part 821 and the impurity removal part 822 to control the dust exhaust groove 61 on the surface of the partition 6 to be in a through state, so that the dust can be easily cleaned into the dust collecting chamber 12. After cleaning, the dust exhaust groove 61 is sealed by the sealing part 821, and then the exhaust gas sampling can be performed again.

[0027] like Figure 4 As shown, as a preferred embodiment of the present invention, the automatic air intake component 73 includes a first elastic member 731 fixedly installed on the inner top wall of the air intake cylinder 2, the telescopic end of the first elastic member 731 is fixedly connected to the second sealing plate 72, the bottom wall of the second sealing plate 72 is provided with multiple groups of mounting grooves 733 distributed in a ring shape around the second air intake hole 721, a second elastic member 734 is fixedly installed in the mounting groove 733, the telescopic ends of the second elastic member 734 are jointly fixedly connected with a baffle 735 fitted with the bottom wall of the second sealing plate 72, and the inner top wall of the air intake cylinder 2 is fixedly connected with a push rod 732 that cooperates with the baffle 735.

[0028] The second elastic member 734 pulls the baffle 735 to fit tightly against the bottom wall of the second sealing plate 72, thereby controlling the second air inlet hole 721 to be in a closed state. When sampling is required, the exhaust gas discharge pipe is inserted into the air inlet cylinder 2 and the second sealing plate 72 is pushed to move in the air inlet cylinder 2. The push rod 732 pushes the baffle 735 to separate from the second sealing plate 72, so that the second air inlet hole 721 is in a through state, which can conveniently transport the exhaust gas to the sample chamber 13.

[0029] In addition to using the above-mentioned mechanism, the automatic air intake component 73 can also be provided with an electromagnetic control valve that cooperates with the second air intake hole 721 on the surface of the second sealing plate 72, and a control switch that is electrically connected to the electromagnetic control valve is provided on the surface of the second sealing plate 72. When in use, the exhaust gas discharge pipe is inserted into the air intake cylinder 2 and cooperates with the control switch to control the opening and closing state of the second air intake hole 721.

[0030] like Figure 1 , Figure 3 As shown, as a preferred embodiment of the present invention, the rotating part 812 includes a placement groove 8121 opened on the bottom wall of the first sealing plate 5, both ends of the cleaning rod 811 are rotatably connected to the placement groove 8121, a control gear disc 8122 is fixedly installed on the surface of the cleaning rod 811, and a gear ring 8123 meshing with the control gear disc 8122 is fixedly installed on the top wall of the intake cylinder 2.

[0031] When in use, the cleaning rod 811 rotates to drive the control toothed disc 8122 to roll along the direction of the gear ring 8123, and the control toothed disc 8122 drives the cleaning rod 811 to rotate, which can fully clean the dust on the surface of the partition 6 and effectively improve the cleaning effect.

[0032] In addition to the above-mentioned structure, the rotating part 812 may also be provided with a driving member in the placement groove 8121, and the output shaft of the driving member is fixedly connected to the cleaning rod 811. When in use, starting the driving member to drive the cleaning rod 811 to rotate can fully clean the dust on the surface of the partition 6.

[0033] like Figure 1 , Figure 2 As shown, as a preferred embodiment of the present invention, the sealing portion 821 includes a limiting rod 8211 fixedly installed on the bottom wall of the partition 6 and located on both sides of the dust exhaust groove 61, the limiting rod 8211 is slidably connected with a mounting plate 8213, and a sealing strip 8214 that cooperates with the dust exhaust groove 61 is fixedly installed on the surface of the mounting plate 8213, the bottom end of the limiting rod 8211 is fixedly connected to a third elastic member 8212 fixedly connected to the mounting plate 8213, and the sealing strip 8214 is connected to the debris exhaust portion 822.

[0034] When in use, the third elastic member 8212 pushes the mounting plate 8213 to fit against the bottom wall of the partition 6, and the sealing strip 8214 on the surface of the mounting plate 8213 fits tightly against the side wall of the dust exhaust slot 61, which can conveniently keep the dust exhaust slot 61 in a closed state.

[0035] In addition to the above-mentioned structure, the sealing portion 821 may also be provided with a magnetic block inside the partition 6. The mounting plate 8213 is made of a magnetic material. When in use, the magnetic block cooperates with the mounting plate 8213 to conveniently keep the dust removal tank 61 in a closed state.

[0036] like Figure 2 , Figure 3 As shown, as a preferred embodiment of the present invention, the debris removal portion 822 includes a pressure rod 8221 fixedly installed on the surface of the sealing strip 8214, and the side wall of the placement groove 8121 is fixedly installed with a connecting plate 8222 that cooperates with the pressure rod 8221, and the bottom wall of the connecting plate 8222 is flush with the bottom wall of the first sealing plate 5.

[0037] When the dust in the sample chamber 13 needs to be discharged, the first sealing plate 5 moves toward the partition 6. The bottom wall of the first sealing plate 5 applies a thrust to the pressure rod 8221, which can conveniently push the sealing strip 8214 to move along the dust discharge groove 61 toward the dust collecting chamber 12, so that the dust discharge groove 61 is in a through state, and the dust on the surface of the partition 6 can be conveniently controlled to pass through the dust discharge groove 61 and be discharged into the dust collecting chamber 12.

[0038] In addition to the above-mentioned structure, the debris removal part 822 can also fix an electric telescopic rod in the dust collecting chamber 12, and the telescopic end of the electric telescopic rod is fixedly connected to the bottom wall of the mounting plate 8213. When in use, the position of the mounting plate 8213 can be conveniently adjusted by the electric telescopic rod.

[0039] like Figure 2 As shown, as a preferred embodiment of the present invention, a roller 14 which cooperates with the first sealing plate 5 is rotatably mounted on the top end of the pressure rod 8221 .

[0040] The contact between the roller 14 and the bottom wall of the first sealing plate 5 can effectively reduce the friction resistance between the pressure rod 8221 and the first sealing plate 5.

[0041] like Figure 3 As shown, as a preferred embodiment of the present invention, a telescopic mechanism 9 connected to the cleaning rod 811 is provided in the placement groove 8121, and the telescopic mechanism 9 is used to adjust the relative position between the cleaning rod 811 and the placement groove 8121.

[0042] like Figure 3 As shown, as a preferred embodiment of the present invention, the telescopic mechanism 9 includes slide grooves 91 respectively opened on the two side walls opposite to the placement groove 8121, a sliding block 92 is slidably installed in the slide groove 91, both ends of the cleaning rod 811 are respectively rotatably connected to the sliding block 92, and a fourth elastic member 93 fixedly connected to the sliding block 92 is fixedly installed in the slide groove 91.

[0043] When in use, the relative position between the cleaning rod 811 and the placement groove 8121 can be conveniently adjusted by cooperating with the slide groove 91 and the fourth elastic member 93. After dust removal is completed, the cleaning rod 811 can be conveniently adjusted in position while continuing to press the first sealing plate 5 downward so that the first sealing plate 5 and the partition 6 are in contact.

[0044] The working principle of the present invention is as follows: when in use, the exhaust gas discharge pipe is inserted into the air intake cylinder 2 and the second sealing plate 72 is pushed to move in the air intake cylinder 2, and the push rod 732 pushes the baffle plate 735 to separate from the second sealing plate 72 so that the second air intake hole 721 is in a through state, and the exhaust gas can be conveniently transported to the sample chamber 13. When multiple sampling is required, the first sealing plate 5 is controlled to move in the sampling cylinder 1 through the cooperation of the control disk 11 and the fixed rod 10, and the dust attached to the inner wall of the sampling cylinder 1 is cleaned through the first sealing plate 5 so that the dust falls on the surface of the partition 6, and the first sealing plate 5 is pushed to move toward the surface of the partition 6 so that the cleaning rod 811 is in contact with the surface of the partition 6, and the cleaning rod 811 is connected to the surface of the partition 6 through the control disk 11 and the fixed rod 10. The rods 10 cooperate with each other to control the rotation of the first sealing plate 5 to drive the cleaning rod 811 to rotate on the surface of the partition 6 to perform preliminary cleaning of the partition 6. When the cleaning rod 811 rotates, it drives the control gear plate 8122 to roll along the direction of the gear ring 8123. The control gear plate 8122 drives the cleaning rod 811 to rotate, which can fully clean the dust on the surface of the partition 6 and effectively improve the cleaning effect. While cleaning, the bottom wall of the first sealing plate 5 applies a thrust to the pressure rod 8221, which can conveniently push the sealing strip 8214 to move along the dust exhaust groove 61 toward the dust collecting chamber 12, so that the dust exhaust groove 61 is in a through state, which can conveniently control the dust on the surface of the partition 6 to pass through the dust exhaust groove 61 and be discharged into the dust collecting chamber 12.

[0045] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A waste gas sampling device for industrial waste gas detection, comprising a sampling cylinder, wherein an air inlet cylinder extending into the sampling cylinder is fixedly installed on the bottom wall of the sampling cylinder, an exhaust pipe is fixedly connected to the side wall of the sampling cylinder, a control valve is arranged on the surface of the exhaust pipe, a first sealing plate is slidably installed between the inner walls of the sampling cylinder, a fixing rod is fixedly connected to the top wall of the first sealing plate, an end of the fixing rod away from the first sealing plate extends to the outside of the sampling cylinder and is fixedly connected to a control disk, characterized in that: A partition is fixedly installed between the inner wall of the sampling cylinder and the side wall of the air inlet cylinder, the partition divides the inner cavity of the sampling cylinder into a dust collection cavity and a sample cavity, and a plurality of dust exhaust grooves are provided on the surface of the partition; The air inlet cylinder is provided with a sampling mechanism, the sampling mechanism includes a first air inlet hole, a second sealing plate and an automatic air inlet assembly, the first air inlet hole is provided on the top wall of the air inlet cylinder, the second sealing plate is slidably connected to the inner wall of the air inlet cylinder, a second air inlet hole is provided on the surface of the second sealing plate, the automatic air inlet assembly is located on the surface of the second sealing plate and cooperates with the second air inlet hole, and the automatic air inlet assembly is used to control the exhaust gas to pass through the second sealing plate and then be transported to the sample chamber; A cleaning mechanism is provided in the sampling tube, the cleaning mechanism includes a cleaning assembly and a collecting assembly, the cleaning assembly includes a cleaning rod and a rotating part, a brush is provided on the surface of the cleaning rod, the rotating part is located on the bottom wall of the first sealing plate and connected to the cleaning rod, and the rotating part is used to control the cleaning rod to rotate; The rotating part includes a placement groove opened on the bottom wall of the first sealing plate, the two ends of the cleaning rod are rotatably connected to the placement groove, a control toothed disc is fixedly installed on the surface of the cleaning rod, and a gear ring meshing with the control toothed disc is fixedly installed on the top wall of the air intake cylinder; The collecting assembly is located in the dust discharge groove on the surface of the partition and is connected to the first sealing plate. The collecting assembly is used to cooperate with the first sealing plate to adjust the opening and closing state of the dust discharge groove. The collecting assembly includes a sealing part and a debris discharge part. The sealing part is located on the surface of the partition and cooperates with the dust discharge groove. The debris discharge part is located on the bottom wall of the first sealing plate. The sealing part is used to keep the dust discharge groove in a sealed state. The debris discharge part is used to cooperate with the first sealing plate to control the dust discharge groove to be in a through state. The sealing part includes a limit rod fixedly installed on the bottom wall of the partition and located on both sides of the dust discharge groove, the limit rod is slidably connected to a mounting plate, a sealing strip that cooperates with the dust discharge groove is fixedly installed on the surface of the mounting plate, a third elastic member fixedly connected to the mounting plate is fixedly connected to the bottom end of the limit rod, and the sealing strip is connected to the dust discharge part; The debris removal part includes a pressure rod fixedly installed on the surface of the sealing strip, and a connecting plate that cooperates with the pressure rod is fixedly installed on the side wall of the placement groove, and the bottom wall of the connecting plate is flush with the bottom wall of the first sealing plate.

2. The waste gas sampling device for industrial waste gas detection according to claim 1, characterized in that: The automatic air intake component includes a first elastic member fixedly installed on the inner top wall of the air intake cylinder, the telescopic end of the first elastic member is fixedly connected to the second sealing plate, the bottom wall of the second sealing plate is provided with multiple groups of installation grooves distributed around the second air intake hole, a second elastic member is fixedly installed in the installation groove, the telescopic ends of the second elastic member are jointly and fixedly connected to a baffle plate that fits the bottom wall of the second sealing plate, and the inner top wall of the air intake cylinder is fixedly connected to a push rod that cooperates with the baffle plate.

3. The waste gas sampling device for industrial waste gas detection according to claim 1, characterized in that: A roller which cooperates with the first sealing plate is rotatably mounted on the top end of the pressure rod.

4. The waste gas sampling device for industrial waste gas detection according to claim 1, characterized in that: A telescopic mechanism connected to the cleaning rod is arranged in the placement groove, and the telescopic mechanism is used for adjusting the relative position between the cleaning rod and the placement groove.

5. The waste gas sampling device for industrial waste gas detection according to claim 4, characterized in that: The telescopic mechanism includes slide grooves respectively opened on two side walls opposite to the placement groove, a sliding block is slidably installed in the slide groove, both ends of the cleaning rod are rotatably connected to the sliding block, and a fourth elastic member fixedly connected to the sliding block is fixedly installed in the slide groove.

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