A sampling probe sealing protection structure for laboratory high-temperature exhaust gas detection

Abstract

This invention discloses a sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection, belonging to the field of exhaust gas detection. The structure includes a top plate and a sliding plate slidably disposed at the bottom of the top plate. Multiple telescopic cylinders are located at the bottom of the sliding plate, each containing a probe body. A support rod is fixedly connected to the bottom of the top plate, with a support plate at its bottom. An arc-shaped plate is located at the bottom of the arc-shaped cylinders. A cleaning rack is snapped onto both sides of the top plate, with a support platform on the rack and a cleaning cylinder on the platform. This invention can remove high-temperature acidic or alkaline residual exhaust gas and condensate from the probe body, preventing continuous corrosion and extending the probe's lifespan and response time. Simultaneously, it prevents residual exhaust gas from spreading and polluting the laboratory environment.

Description

Technical Field

[0001] This invention relates to the field of exhaust gas detection technology, and in particular to a sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection. Background Technology

[0002] Laboratory high-temperature exhaust gas detection is an important means of assessing pollutant emissions from industrial production processes and ensuring environmental safety. As the core component at the front end of the detection system, the sampling probe is directly inserted into the high-temperature exhaust gas outlet to collect exhaust gas samples containing corrosive components, high-temperature particulate matter, and water vapor. Its performance directly determines the accuracy and reliability of the detection data.

[0003] However, after the testing work is completed, the existing high-temperature exhaust gas detection sampling probes in laboratories are usually placed directly in the laboratory environment without any sealing and protection measures. The high-temperature acidic or alkaline exhaust gas and condensed water vapor remaining inside the probe will continue to corrode the sampling tube, sintered filter element, sensor electrode and other core components. At the same time, the negative pressure generated during the probe cooling process will actively draw in external dust and moisture, further aggravating internal pollution and corrosion, resulting in probe pipeline blockage, detection accuracy drift, extended response time and significantly shortened service life. Moreover, the exposed probe will slowly leak residual toxic and harmful exhaust gas, causing indoor air pollution in the laboratory and threatening the health of the testing personnel.

[0004] Based on this, this application proposes a sealing and protection structure for a sampling probe used in laboratory high-temperature exhaust gas detection to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the prior art by providing a sealing and protection structure for a sampling probe used in laboratory high-temperature exhaust gas detection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A protective structure for sealing a sampling probe used in laboratory high-temperature exhaust gas detection includes a top plate and further includes: A sliding plate is slidably mounted on the bottom of the top plate. The bottom of the sliding plate is provided with multiple telescopic cylinders, and each telescopic cylinder is connected to a probe body. A support rod is fixedly connected to the bottom of the top plate. The bottom of the support rod is provided with a support plate, and the support plate is provided with an arc-shaped plate. The arc-shaped plate is located at the bottom of the telescopic cylinder. A cleaning rack is snapped onto both sides of the top plate, and a support platform is provided on the cleaning rack, with a cleaning cylinder on the support platform.

[0007] Preferably, the telescopic cylinder includes a first cylinder, a second cylinder, and a third cylinder that are slidably connected. The first cylinder is disposed at the bottom of the slide plate, and a sealing plate is rotatably disposed at the bottom of the third cylinder. The sealing plate is provided with an inclined plate corresponding to the probe body.

[0008] Furthermore, the bottom of the third cylinder is provided with a protrusion, and a pin is provided on the protrusion. The sealing plate is rotatably connected to the pin, and a torsion spring is provided between the side wall of the sealing plate and the protrusion. The torsion spring is sleeved on the outer wall of the pin.

[0009] Preferably, it further includes a threaded rod and a guide rod. A slider is fixedly connected to the top plate. The threaded rod is threadedly connected to the slider. The slider is slidably connected to the guide rod. A mounting block is provided at the bottom of the top plate. A telescopic rod is provided inside the mounting block. The slide plate is located at the output end of the telescopic rod.

[0010] Preferably, the cleaning rack includes a fixing block and a U-shaped frame fixedly connected to the fixing block. The U-shaped frame is snapped onto both sides of the top plate. A connecting rod is provided at the bottom of the fixing block, and the end of the connecting rod away from the fixing block is connected to the bottom plate.

[0011] Furthermore, the support platform is fixedly mounted on the base plate, and multiple cleaning cylinders are provided, all of which are mounted on the base plate. A locking rod is threaded onto the outer wall of the U-shaped frame, and one end of the locking rod passes through the U-shaped frame and abuts against the outer wall of the top plate.

[0012] Furthermore, each of the cleaning cylinders is rotatably connected to multiple rotating shafts, each rotating shaft is provided with multiple cleaning cloths, and the cleaning cloths on each rotating shaft are staggered.

[0013] Furthermore, the number of telescopic cylinders is relative to the number of cleaning cylinders, and the probe body in each telescopic cylinder is located at the center of multiple rotating shafts.

[0014] Furthermore, multiple drive shafts are provided between the base plate and the support platform, each drive shaft is equipped with a large gear, and the outer wall of the rotating shaft is equipped with a small gear that meshes with the large gear. A fixing rod is fixedly connected to the bottom of the support platform, and an annular plate is connected to the bottom of the fixing rod. The bottom of the rotating shaft is rotatably mounted on the annular plate, and the drive shaft is inserted into the annular plate.

[0015] Furthermore, each of the multiple drive shafts is equipped with a pulley, and a belt is connected to the pulley. A motor is fixedly connected to the base plate, and one of the drive shafts is located at the output end of the motor.

[0016] Compared with the prior art, the present invention provides a sealing and protection structure for a sampling probe used in laboratory high-temperature exhaust gas detection, which has the following beneficial effects: 1. The sealing and protection structure of the sampling probe for high-temperature exhaust gas detection in this laboratory ensures that the probe body is always placed inside the telescopic cylinder in the initial state, preventing the intrusion of external dust and other contaminants, thus improving the sealing and protection effect of the probe body and ensuring its effectiveness and accuracy. When high-temperature exhaust gas needs to be collected, the telescopic cylinder is directly controlled to move downwards. Under the blocking and limiting effect of the arc-shaped plate, the probe body located inside the telescopic cylinder can extend out to perform the collection work. The sealing plate is easy to rotate, and the probe body can directly push the sealing plate to rotate and open. The torsion spring provides a certain torque when the sealing plate is opened. When the probe body is no longer pressing the sealing plate, the torsion spring can directly reset the sealing plate, achieving the sealing effect again and improving the sealing and protection effect.

[0017] 2. The sampling probe sealing and protection structure for high-temperature exhaust gas detection in this laboratory features a cleaning cylinder that can clean the probe body. By controlling the rotation of the drive shaft, multiple rotating shafts are driven to rotate rapidly through the meshing of large and small gears. This allows multiple cleaning cloths to quickly clean the probe body. Cleaning fluid can be added to the cleaning cylinder to further improve cleaning efficiency. Multiple cleaning cylinders are available, allowing for the simultaneous cleaning of multiple probe bodies, thus increasing cleaning efficiency and extending the service life of the probe body.

[0018] 3. The sampling probe sealing and protection structure for high-temperature exhaust gas detection in this laboratory, through the synchronous rotation of cleaning cloths on multiple rotating shafts, enables cleaning operations on the probe body tip. This removes residual high-temperature acidic or alkaline exhaust gases and condensed water vapor from the probe body, preventing continuous corrosion and extending its service life. It also prevents residual exhaust gases from being drawn into the probe body, avoiding blockage or contamination of the probe's tubing, thus improving the probe's response performance. Simultaneously, it prevents exhaust gas diffusion and pollution of the laboratory environment, ensuring the health of testing personnel. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the sealing and protection structure for a sampling probe used in laboratory high-temperature exhaust gas detection, as proposed in this invention. Figure 2 This is a schematic diagram of a sampling probe sealing and protection structure for high-temperature exhaust gas detection in a laboratory, excluding a cleaning rack, as proposed in this invention. Figure 1 ; Figure 3 This is a schematic diagram of a sampling probe sealing and protection structure for high-temperature exhaust gas detection in a laboratory, excluding a cleaning rack, as proposed in this invention. Figure 2 ; Figure 4This is a cross-sectional view of the telescopic cylinder in the sealing and protective structure of a sampling probe for high-temperature laboratory exhaust gas detection proposed in this invention. Figure 1 ; Figure 5 This is a cross-sectional view of the telescopic cylinder in the sealing and protective structure of a sampling probe for high-temperature laboratory exhaust gas detection proposed in this invention. Figure 2 ; Figure 6 This is a schematic diagram of the cleaning rack in the sealing and protection structure of a sampling probe for high-temperature exhaust gas detection in the laboratory proposed in this invention; Figure 7 This is a schematic diagram of the bottom of the support platform in a sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection proposed in this invention. Figure 8 This is a schematic diagram of the cleaning cloth in the sealing and protective structure of a sampling probe for high-temperature exhaust gas detection in the laboratory proposed in this invention. Figure 9 This invention proposes a sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection. Figure 5 Enlarged view of part A in the middle.

[0020] In the diagram: 1. Top plate; 101. Slider; 102. Mounting block; 103. Telescopic rod; 104. Slide plate; 105. Support rod; 106. Support plate; 107. Arc plate; 108. Threaded rod; 109. Guide rod; 2. First cylinder; 201. Second cylinder; 202. Third cylinder; 203. Sealing plate; 204. Probe body; 205. Protrusion; 206. Pin; 20 7. Torsion spring; 208. Inclined plate; 3. Fixing block; 301. U-shaped frame; 302. Locking rod; 303. Connecting rod; 304. Base plate; 4. Support platform; 401. Cleaning cylinder; 402. Motor; 403. Drive shaft; 404. Pulley; 405. Belt; 406. Large gear; 5. Fixing rod; 501. Annular plate; 502. Rotating shaft; 503. Small gear; 504. Cleaning cloth. Detailed Implementation

[0021] 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. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0023] Example 1: Refer to Figures 1-9 A sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection includes a top plate 1 and a sliding plate 104 slidably disposed at the bottom of the top plate 1. The bottom of the sliding plate 104 is provided with multiple telescopic cylinders, each of which is connected to a probe body 204. A support rod 105 is fixedly connected to the bottom of the top plate 1, and a support plate 106 is provided at the bottom of the support rod 105. An arc-shaped plate 107 is provided on the support plate 106 and disposed at the bottom of the telescopic cylinder. A cleaning rack is snapped onto both sides of the top plate 1. A support platform 4 is provided on the cleaning rack, and a cleaning cylinder 401 is provided on the support platform 4.

[0024] In this embodiment, when sampling is required, a cleaning rack is not needed. After the top plate 1 is moved to the desired position, the sliding plate 104 is moved downwards, thereby moving the telescopic cylinder and the probe body 204 located inside the telescopic cylinder. During the movement, the telescopic cylinder will first touch the arc plate 107. Under the positioning action of the support rod 105 and the support plate 106, the arc plate 107 will be limited. When the bottom of the telescopic cylinder contacts the arc plate 107, the telescopic cylinder will extend or retract. At the same time, the probe body 204 located inside the telescopic cylinder will extend or retract from the telescopic cylinder. The probe extends internally to collect high-temperature exhaust gas for detection. When cleaning is required, cleaning racks are installed on both sides of the top plate 1, or a cleaning rack can be installed next to it. The top plate 1 is moved to the position of the cleaning rack, and the previous step of extending the probe body 204 is repeated, so that the probe body 204 is inserted into the cleaning cylinder 401 for cleaning. This solves the problems of non-standard process, inconsistent quality, and failure to clean in time after use caused by the reliance on manual cleaning in the existing technology. It also avoids the solidification and scaling of pollutants inside the probe, ensuring that the probe is always kept clean.

[0025] Reference Figures 1-3 This application also includes a threaded rod 108 and a guide rod 109. A slider 101 is fixedly connected to the top plate 1. The threaded rod 108 is threadedly connected to the slider 101. The slider 101 is slidably connected to the guide rod 109. A mounting block 102 is provided at the bottom of the top plate 1. A telescopic rod 103 is provided inside the mounting block 102. A sliding plate 104 is provided at the output end of the telescopic rod 103.

[0026] In use, directly controlling the rotation of the threaded rod 108 will drive the slider 101 connected to it to move. At the same time, the slider 101 will slide on the outer wall of the guide rod 109 during movement, which further improves the movement stability of the slider 101. When it moves to the area where high-temperature exhaust gas detection is required, directly controlling the telescopic rod 103 will push the slide plate 104 at the output end to move, thereby driving the telescopic cylinder to move and make the telescopic cylinder contact the arc plate 107, thereby causing the probe body 204 to extend. After the probe body 204 extends, it will achieve the sampling effect of high-temperature exhaust gas. When cleaning is required, directly controlling the rotation of the threaded rod 108 will drive the slider 101 to the position of the cleaning frame, so that the top plate 1 is connected to the cleaning frame, and the sampling end of the probe body 204 is inserted into the cleaning cylinder 401 for cleaning.

[0027] Example 2: Refer to Figures 1-9 , refer to Figures 1-9 A sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection includes a top plate 1 and a sliding plate 104 slidably disposed at the bottom of the top plate 1. The bottom of the sliding plate 104 has multiple telescopic cylinders, each connected to a probe body 204. A support rod 105 is fixedly connected to the bottom of the top plate 1, and a support plate 106 is provided at the bottom of the support rod 105. An arc-shaped plate 107 is provided on the support plate 106, and the arc-shaped plate 107 is disposed at the bottom of the telescopic cylinder. A cleaning rack is snapped onto both sides of the top plate 1, and a support platform 4 is provided on the cleaning rack. A cleaning cylinder 401 is provided on the support platform 4. Similar to Embodiment 1, but further, the telescopic cylinder includes a first cylinder 2, a second cylinder 201, and a third cylinder 202 slidably connected. The first cylinder 2 is disposed at the bottom of the sliding plate 104, and a sealing plate 203 is rotatably disposed at the bottom of the third cylinder 202. An inclined plate 208 corresponding to the probe body 204 is provided on the sealing plate 203.

[0028] The bottom of the third cylinder 202 is provided with a protrusion 205, and a pin 206 is provided on the protrusion 205. The sealing plate 203 is rotatably connected to the pin 206. A torsion spring 207 is provided between the side wall of the sealing plate 203 and the protrusion 205. The torsion spring 207 is sleeved on the outer wall of the pin 206.

[0029] In this embodiment, when the third cylinder 202 at the bottom of the telescopic cylinder contacts the arc plate 107, the sliding plate 104 continuously drives the telescopic cylinder downwards. At this time, the telescopic cylinder will retract, that is, the second cylinder 201 slides into the first cylinder 2, and the third cylinder 202 slides into the second cylinder 201. At this time, the probe body 204 will push the sealing plate 203, thereby causing the sealing plate 203 to rotate. Under the action of the inclined plate 208, the probe body 204 extends. At this time, the probe body 204 can perform sampling or cleaning operations. When the probe body 204 needs to be reset after use, the telescopic rod 103... The operation causes the telescopic cylinder to move upwards. Under the influence of gravity, the first cylinder 2, the second cylinder 201, and the third cylinder 202 automatically reset, thus re-enclosing the probe body 204. When the sealing plate 203 rotates, the torsion spring 207 generates torque. When the probe body 204 loses its constraint on the sealing plate 203, the torsion spring 207 causes the sealing plate 203 to automatically reset and abut against the bottom of the third cylinder 202 again, achieving a sealing effect. This further protects the probe body 204 from long-term exposure to air, preventing dust intrusion and affecting its service life.

[0030] Example 3: Refer to Figures 1-9 A sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection includes a top plate 1 and a sliding plate 104 slidably disposed at the bottom of the top plate 1. The bottom of the sliding plate 104 has multiple telescopic cylinders, each connected to a probe body 204. A support rod 105 is fixedly connected to the bottom of the top plate 1, and a support plate 106 is provided at the bottom of the support rod 105. An arc-shaped plate 107 is provided on the support plate 106, and the arc-shaped plate 107 is disposed at the bottom of the telescopic cylinders. A cleaning rack is snapped onto both sides of the top plate 1, and a support platform 4 is provided on the cleaning rack, with a cleaning cylinder 401 on the support platform 4. Similar to Embodiment 1, but further, the cleaning rack includes a fixing block 3 and a U-shaped frame 301 fixedly connected to the fixing block 3. The U-shaped frame 301 is snapped onto both sides of the top plate 1, and a connecting rod 303 is provided at the bottom of the fixing block 3. The end of the connecting rod 303 away from the fixing block 3 is connected to a bottom plate 304.

[0031] In this embodiment, during installation, the U-shaped frame 301 can first be snapped onto both ends of the top plate 1, and then the locking rod 302 is tightened, so that the locking rod 302 and the U-shaped frame 301 are threaded together, thereby driving the locking rod 302 to move and tightly press against the top plate 1, thus completing the installation of the U-shaped frame 301. It should be noted that in the specific use process, the U-shaped frame 301 can be set to be larger, and the base plate 304 is fixed to the ground. When cleaning operation is required, the top plate 1 can be directly controlled to move to the U-shaped frame 301, which does not affect the high-temperature exhaust gas collection operation. The base plate 304 is set to make the entire cleaning frame easy to place.

[0032] The support platform 4 is fixedly installed on the base plate 304. Multiple cleaning cylinders 401 are provided, and all cleaning cylinders 401 are installed on the base plate 304. A locking rod 302 is threadedly connected to the outer wall of the U-shaped frame 301. One end of the locking rod 302 passes through the U-shaped frame 301 and abuts against the outer wall of the top plate 1.

[0033] Each cleaning cylinder 401 is rotatably connected to multiple rotating shafts 502, and each rotating shaft 502 is provided with multiple cleaning cloths 504, and the cleaning cloths 504 on each rotating shaft 502 are arranged in an alternating manner.

[0034] The number of telescopic cylinders is relative to the number of cleaning cylinders 401, and the probe body 204 in each telescopic cylinder is located at the center of multiple rotating shafts 502.

[0035] Multiple drive shafts 403 are provided between the base plate 304 and the support platform 4. Each drive shaft 403 is equipped with a large gear 406. The outer wall of the rotating shaft 502 is equipped with a small gear 503 that meshes with the large gear 406. A fixing rod 5 is fixedly connected to the bottom of the support platform 4. An annular plate 501 is connected to the bottom of the fixing rod 5. The bottom of the rotating shaft 502 is rotatably mounted on the annular plate 501. The drive shaft 403 is inserted into the annular plate 501.

[0036] Multiple drive shafts 403 are equipped with pulleys 404, and belts 405 are connected to the pulleys 404. A motor 402 is fixedly connected to the base plate 304, and one of the drive shafts 403 is located at the output end of the motor 402.

[0037] In this invention, during the cleaning operation, the telescopic cylinder and the cleaning cylinder 401 are first positioned so that they are on the same center line. Then, the telescopic rod 103 is activated, causing the slide plate 104 at the output end to move downwards, thereby bringing the telescopic cylinder into contact with the arc plate 107 and extending the probe body 204. The probe body 204 is then inserted into the cleaning cylinder 401. At this time, the motor 402 is activated, causing the drive shaft 403 at the output end to rotate. Since each drive shaft 403 is equipped with a pulley 404, multiple drive shafts 403 can rotate synchronously under the action of the belt 405. This drives the large gear 406 connected to the drive shaft 403 to rotate, which in turn drives the small gear 50 meshing with it. 3. Rotation causes the rotating shaft 502 connected to the pinion 503 to start rotating, thereby driving the cleaning cloth 504 connected to the rotating shaft 502 to rotate. The cleaning cloths 504 on multiple rotating shafts 502 rotate synchronously, which can realize the cleaning operation of the end of the probe body 204. It can remove the residual waste gas and condensed water vapor of high temperature acid or alkaline on the probe body 204, avoid its continuous corrosion of the probe body 204, and improve the service life of the probe body 204. This also prevents the probe body 204 from sucking residual waste gas into its interior, avoiding blockage or contamination of the probe's pipeline, improving the response effect of the probe body 204, and preventing the spread of waste gas and pollution of the laboratory environment, thereby ensuring the health of the testing personnel.

[0038] Furthermore, in this application, the drive shaft 403 drives the large gear 406 to rotate, which in turn drives multiple meshing small gears 503 to rotate, thereby increasing the rotation speed of the multiple small gears 503, which in turn increases the rotation speed of the multiple rotating shafts 502 and the rotation speed of the cleaning cloth 504, resulting in better cleaning effect. In addition, cleaning fluid is added to the cleaning cylinder 401 to assist in cleaning and facilitate the removal of stubborn stains.

[0039] It should be noted that the pulley 404 and belt 405 in this application can be replaced by a chain sprocket, as long as the rotation of multiple drive shafts 403 can be completed, and there are no requirements on the direction of rotation. The fixed rod 5 and the annular plate 501 make it easy to install and rotate the rotating shaft 502. When the probe body 204 moves downward, it will be directly inserted into the middle position of multiple rotating shafts 502 inside the cleaning cylinder 401. Multiple cleaning cloths 504 can improve the cleaning effect on the probe body 204. In addition, the cleaning cloths 504 on the multiple rotating shafts 502 are staggered. When the rotating shaft 502 rotates, it can drive the multiple cleaning cloths 504 to rotate synchronously. The staggered arrangement can ensure that the multiple cleaning cloths 504 will not interfere with each other when rotating, thus improving the effect of use.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection, comprising a top plate (1), characterized in that, Also includes: The slide plate (104) is slidably disposed at the bottom of the top plate (1). The bottom of the slide plate (104) is provided with multiple telescopic cylinders, and each telescopic cylinder is connected to a probe body (204). A support rod (105) is fixedly connected to the bottom of the top plate (1). The bottom of the support rod (105) is provided with a support plate (106). An arc plate (107) is provided on the support plate (106). The arc plate (107) is located at the bottom of the telescopic cylinder. A cleaning rack is snapped onto both sides of the top plate (1). The cleaning rack is provided with a support platform (4), and the support platform (4) is provided with a cleaning cylinder (401).

2. The sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection according to claim 1, characterized in that, The telescopic cylinder includes a first cylinder (2), a second cylinder (201) and a third cylinder (202) that are slidably connected. The first cylinder (2) is located at the bottom of the slide plate (104). The bottom of the third cylinder (202) is rotatably provided with a sealing plate (203). The sealing plate (203) is provided with an inclined plate (208) corresponding to the probe body (204).

3. The sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection according to claim 2, characterized in that, The bottom of the third cylinder (202) is provided with a protrusion (205), and a pin (206) is provided on the protrusion (205). The sealing plate (203) is rotatably connected to the pin (206). A torsion spring (207) is provided between the side wall of the sealing plate (203) and the protrusion (205). The torsion spring (207) is sleeved on the outer wall of the pin (206).

4. The sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection according to claim 1, characterized in that, It also includes a threaded rod (108) and a guide rod (109). A slider (101) is fixedly connected to the top plate (1). The threaded rod (108) is threadedly connected to the slider (101). The slider (101) is slidably connected to the guide rod (109). A mounting block (102) is provided at the bottom of the top plate (1). A telescopic rod (103) is provided inside the mounting block (102). The sliding plate (104) is provided at the output end of the telescopic rod (103).

5. The sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection according to claim 1, characterized in that, The cleaning rack includes a fixing block (3) and a U-shaped frame (301) fixedly connected to the fixing block (3). The U-shaped frame (301) is snapped onto both sides of the top plate (1). A connecting rod (303) is provided at the bottom of the fixing block (3). The end of the connecting rod (303) away from the fixing block (3) is connected to the bottom plate (304).

6. The sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection according to claim 5, characterized in that, The support platform (4) is fixedly installed on the base plate (304). There are multiple cleaning cylinders (401), and all of the multiple cleaning cylinders (401) are installed on the base plate (304). A locking rod (302) is threadedly connected to the outer wall of the U-shaped frame (301). One end of the locking rod (302) passes through the U-shaped frame (301) and abuts against the outer wall of the top plate (1).

7. The sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection according to claim 6, characterized in that, Each of the cleaning cylinders (401) is rotatably connected to a plurality of rotating shafts (502), and each of the rotating shafts (502) is provided with a plurality of cleaning cloths (504), and the cleaning cloths (504) on each of the rotating shafts (502) are arranged in an alternating manner.

8. The sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection according to claim 7, characterized in that, The number of telescopic cylinders is relative to the number of cleaning cylinders (401), and the probe body (204) in each telescopic cylinder is located at the center of multiple rotating shafts (502).

9. The sealing and protection structure for a sampling probe used in laboratory high-temperature exhaust gas detection according to claim 8, characterized in that, Multiple drive shafts (403) are provided between the base plate (304) and the support platform (4). Each drive shaft (403) is provided with a large gear (406). The outer wall of the rotating shaft (502) is provided with a small gear (503) that meshes with the large gear (406). A fixing rod (5) is fixedly connected to the bottom of the support platform (4). An annular plate (501) is connected to the bottom of the fixing rod (5). The bottom of the rotating shaft (502) is rotatably mounted on the annular plate (501). The drive shaft (403) is inserted into the annular plate (501).

10. The sealing and protective structure for a sampling probe used in laboratory high-temperature exhaust gas detection according to claim 9, characterized in that, Each of the multiple drive shafts (403) is provided with a pulley (404), and a belt (405) is connected to the pulley (404). A motor (402) is fixedly connected to the base plate (304), and one of the drive shafts (403) is located at the output end of the motor (402).

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