Waste gas collection efficiency evaluation device and waste gas collection device

Abstract

The utility model relates to the technical field of waste gas treatment, and discloses a waste gas collection efficiency evaluation device and a waste gas collection device.The waste gas collection efficiency evaluation device comprises a gas collection hood, a first motor is fixedly connected to the left side in the gas collection hood, the output end of the first motor is rotationally connected with a first bevel gear, and a fixed column is fixedly connected to the left side of the inner wall of the gas collection hood; a rotating column is rotationally connected to the middle of the fixing column, induced draft fan blades are fixedly connected to the other end of the rotating column, a screen is installed on the inner wall of the air inlet pipe, and an adjusting mechanism is communicated with the left side of the interior of the gas collecting cover and used for adjusting the fixing pipeline. According to the utility model, an operator adjusts the gas collecting hood to form a closed cavity, the motor is started to guide air and waste gas to be mixed and then discharged, the speed of clean gas is measured through the flow meter and is transmitted to the data analysis unit, so that the comprehensive coverage and multi-point discharge and collection of a waste gas source are realized, and the collection efficiency and the evaluation mode are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a waste gas collection efficiency evaluation device and a waste gas collection device. Background Art

[0002] The exhaust gas collection efficiency evaluation device is a device used to measure and evaluate the performance of the exhaust gas collection system. The main function of the exhaust gas collection efficiency evaluation device is to help users understand the operation of the exhaust gas collection system, discover problems in time and take measures to improve them, so as to improve the exhaust gas collection efficiency and reduce the impact of exhaust gas emissions on the environment. The exhaust gas collection device is a device used to collect exhaust gas generated in the industrial production process. Its main purpose is to concentrate the exhaust gas for subsequent treatment and emission control. The design and selection of the exhaust gas collection device should be based on the nature of the exhaust gas, the characteristics of the source, the treatment requirements and the emission standards. A reasonable exhaust gas collection device can effectively reduce exhaust gas emissions and protect the environment.

[0003] After searching, the Chinese patent publication number is: CN213934882U, which discloses an exhaust gas collection efficiency evaluation device and an exhaust gas collection device, wherein the exhaust gas collection efficiency evaluation device includes a first sensor, which is arranged on the exhaust gas collection flow path, for obtaining first exhaust gas data, and a second sensor, which is arranged near the exhaust gas source, for obtaining second exhaust gas data. The above-mentioned first exhaust gas data and second exhaust gas data can be used to calculate the exhaust gas collection efficiency. Its beneficial effect is that by obtaining the first exhaust gas data and the second exhaust gas data, the user is provided with data on the exact exhaust gas collection efficiency of the exhaust gas collection device. Existing exhaust gas collection devices generally have low collection efficiency. Although the system can reduce the diffusion of pollutants to a certain extent and improve the collection efficiency by increasing the air volume, it is difficult to achieve comprehensive coverage of exhaust gas sources in various complex environments. In addition, when evaluating the performance of exhaust gas collection equipment, it usually relies on experience judgment or simple simulation tests. Especially in the case of multi-point dispersed emissions, the traditional single-point suction method is difficult to meet the needs, changing the problems of incomplete collection efficiency and overly simple evaluation methods. Utility Model Content

[0004] In order to make up for the above deficiencies, the present invention provides an exhaust gas collection efficiency evaluation device and an exhaust gas collection device, aiming to improve the problems in the prior art of incomplete collection efficiency and overly simple evaluation methods.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an exhaust gas collection efficiency evaluation device and an exhaust gas collection device, including an air collecting hood, the inner left side of the air collecting hood is fixedly connected to motor 1, the output end of the motor 1 is rotatably connected to bevel gear 1, the left side of the inner wall of the air collecting hood is fixedly connected to a fixed column, the middle part of the fixed column is rotatably connected to a rotating column, the right end of the rotating column is fixedly connected to bevel gear 2, the bevel gear 2 is meshed with bevel gear 1, the other end of the rotating column is fixedly connected to an induced fan blade, the middle part of the air collecting hood is fixedly connected to a fixed frame, the top of the fixed frame is rotatably connected to a rotating shaft 1, and the outer wall of the rotating shaft 1 is fixedly connected to Multiple stirring blades, a flow meter is installed inside the air collecting hood, a filter is installed on the inner bottom wall of the air collecting hood, the internal rotation of the filter is connected to the rotating shaft 2, the middle part of the rotating shaft 2 is fixedly connected to the exhaust fan blade, the upper and middle part of the rotating shaft 2 is fixedly connected to the bevel gear 3, the bottom left side of the air collecting hood is fixedly connected to the motor 2, the output end of the motor 2 is fixedly connected to the connecting rod, the right end of the connecting rod is fixedly connected to the bevel gear 4, the bevel gear 4 is meshed with the bevel gear 3, the top of the air collecting hood is connected to the air inlet pipe, the inner wall of the air inlet pipe is installed with a screen, the inner left side of the air collecting hood is connected to the adjustment mechanism, and the adjustment mechanism is used to adjust the fixed pipe.

[0006] Through the above technical solution: the left side of the air hood is connected to the motor, and the output end rotates through the bevel gear; the middle of the fixed column on the left side of the inner wall is connected to the right end of the rotating column, which is connected to the bevel gear and meshes with the bevel gear to ensure the rotation of the rotating column. The other end of the rotating column is connected to the exhaust fan blade to guide the airflow to the top of the middle fixed frame in the air hood and connected to the rotating shaft. The outer wall is connected to the stirring blade to stir the air to mix the airflow. A flow meter 1 is installed in the air hood, which uses the thermal conductivity principle to monitor the flow rate and feedback data analysis unit. The device can be remotely deployed and recovered automatically to improve operational convenience and safety. A filter is installed on the inner bottom wall, and a built-in HEPA filter removes particulate matter to ensure detection accuracy. The inside of the filter is connected to the rotating shaft, and the upper and middle parts are connected to the bevel gear, which meshes with the bevel gear to ensure the rotation of the exhaust fan blade. The bottom left is connected to the motor, and the right end of the output connecting rod is connected to the bevel gear and meshes with the bevel gear to ensure the rotation of the connecting rod. A screen is installed on the inner wall of the air inlet pipe at the top to improve the practicality and reliability of the device.

[0007] As a further description of the above technical solution:

[0008] The adjustment mechanism includes a sleeve, which is connected to the left side of the interior of the air collecting hood. The outer wall of the sleeve is fixedly connected to a bellows. A plurality of brackets are installed on the left and right sides of the outer wall of the bellows. The outer wall of the bracket is fixedly connected to an adjustment gear 1. The top of the adjustment gear 1 is rotatably connected to a fixed block. The bottom right side of the fixed block is rotatably connected to an adjustment gear 2. The adjustment gear 2 is meshed with the adjustment gear 1, and the right side of the adjustment gear 2 is fixedly connected to the outer wall of the bracket.

[0009] Through the above technical solution: the left side of the gas collection hood is connected to the sleeve, and the outer wall is fixed with a corkscrew, which is convenient for collecting gas from multiple angles. The corkscrew is supported by a bracket, and the bracket is equipped with a top rotatable and adjustable gear 1, and a bottom connected to a mutually meshing gear 2, which is fixed to the outer wall of the bracket to enhance stability. This design facilitates precise adjustment of the position of the sleeve and the corkscrew to achieve multi-angle collection, combines practicality and stability, is easy to operate, and ensures full operation of the equipment.

[0010] As a further description of the above technical solution:

[0011] Slide grooves are provided at the four corners of the air collecting hood, and sliders are slidably connected inside the slide grooves.

[0012] Through the above technical solution: the four corners of the air collecting hood are provided with sliding grooves, and the sliding blocks are connected in the sliding grooves to ensure the stability and flexibility of the air collecting hood support.

[0013] As a further description of the above technical solution:

[0014] The outer walls of the plurality of sliding blocks are rotatably connected to an adjusting frame 1, and the middle portion of the adjusting frame 1 is rotatably connected to an adjusting frame 2.

[0015] Through the above technical solution: the outer wall of the multi-slider is rotatably connected to the adjustment frame 1, allowing it to flexibly adjust its position, and the middle part of the adjustment frame 1 is rotatably connected to the adjustment frame 2, ensuring that the adjustment frame 2 can also be rotated and adjusted accordingly, thereby increasing the flexibility of the structure.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the multiple adjustment frames is rotatably connected to the telescopic rod one, the inside of the telescopic rod one is slidably connected to the telescopic rod two, the bottom of the telescopic rod two is fixedly connected to the foot pad, the outer wall of the telescopic rod one is equidistantly provided with multiple fixing holes, and pins are installed inside the fixing holes.

[0018] Through the above technical solution: the second adjustment frame is rotatably connected to the telescopic rod one, the telescopic rod one is internally slidably connected to the telescopic rod two to achieve fine adjustment, the bottom of the telescopic rod two is fixed with a foot pad to ensure lightness, durability and stability, the outer wall of the telescopic rod one is provided with multiple fixing holes with pins inside to maintain stability during extension and retraction and prevent shaking.

[0019] As a further description of the above technical solution:

[0020] The top ends of the multiple telescopic rods are fixedly connected to a base, and a warning light is installed inside the base.

[0021] Through the above technical solution: the top of the telescopic rod is connected to the base, and a warning light is installed inside to send out a warning signal and improve safety performance.

[0022] As a further description of the above technical solution:

[0023] An operating table is installed on the front side of the outer wall of the gas collecting hood. A button is installed on the front side of the outer wall of the operating table. An analysis panel is provided on the top of the button.

[0024] Through the above technical solution: an operating table is installed on the front side of the outer wall of the gas collecting hood, and buttons are installed on the front side of the operating table to control the functions of the gas collecting hood. There is an analysis panel on the top to display the working status and parameters of the gas collecting hood.

[0025] As a further description of the above technical solution:

[0026] A pointer is installed on the right side of the outer wall of the flow meter, and a scale plate is provided on the front side of the outer wall of the pointer.

[0027] Through the above technical solution: a pointer is installed on the right outer wall of the flow meter to visually display flow changes, and a dial is provided on the front side to facilitate observation and control of gas flow and accurate reading of values.

[0028] The utility model has the following beneficial effects:

[0029] 1. In this utility model, the operator adjusts the gas collection hood to form a closed chamber, starts the motor to guide the air and exhaust gas to mix and then be discharged. The clean gas is measured by the flow meter and the speed is transmitted to the data analysis unit. The unit automatically evaluates the operating status of the equipment, realizes comprehensive coverage of the exhaust gas source and multi-point emission collection, and improves the collection efficiency and evaluation method.

[0030] 2. In the utility model, the outer wall of the gas collecting hood is connected with a snake-like tube, which is convenient for collecting gas at multiple angles. The snake-like tube is supported by a bracket, and an adjusting gear is installed on the bracket, which can be rotated to adjust the position to ensure the accuracy of the adjustment. This design facilitates the precise adjustment of the position of the sleeve and the snake-like tube to achieve multi-angle collection, combines practicality and stability, is easy to operate, and ensures the full operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a three-dimensional diagram of an exhaust gas collection efficiency evaluation device and an exhaust gas collection device proposed in the present invention;

[0032] Figure 2This is a front view of an exhaust gas collection efficiency evaluation device and an exhaust gas collection device proposed in the utility model;

[0033] Figure 3 This is a top view of an exhaust gas collection efficiency evaluation device and an exhaust gas collection device proposed in the present invention;

[0034] Figure 4 This is a partial structural breakdown diagram of an exhaust gas collection efficiency evaluation device and an exhaust gas collection device proposed in the utility model;

[0035] Figure 5 This is a disassembled diagram of an exhaust gas collection efficiency evaluation device and an adjustment mechanism of the exhaust gas collection device proposed in the utility model.

[0036] Legend:

[0037] 1. Air collecting hood; 2. Adjustment mechanism; 201. Casing; 202. Snug tube; 203. Bracket; 204. Adjustment gear 1; 205. Fixing block; 206. Adjustment gear 2; 3. Motor 1; 4. Bevel gear 1; 5. Fixing column; 6. Rotating column; 7. Bevel gear 2; 8. Induced fan blades; 9. Fixing bracket; 10. Rotating shaft 1; 11. Stirring blades; 12. Flowmeter; 13. Rotating shaft 2; 14. Bevel gear 3; 15. Exhaust fan blades ; 16. Motor 2; 17. Connecting rod; 18. Bevel gear 4; 19. Filter; 20. Air inlet pipe; 21. Screen; 22. Adjustment frame 1; 23. Adjustment frame 2; 24. Telescopic rod 1; 25. Telescopic rod 2; 26. Pin; 27. Fixing hole; 28. Foot pad; 29. ​​Base; 30. Warning light; 31. Analysis panel; 32. Button; 33. Operating table; 34. Slide; 35. Slider; 36. Pointer; 37. Dial. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] Reference Figure 1 、 Figure 2 and Figure 4, the utility model provides an embodiment: an exhaust gas collection efficiency evaluation device and an exhaust gas collection device, including an air collecting hood 1, a motor 3 is fixedly connected to the left side of the interior of the air collecting hood 1, the output end of the motor 3 is rotatably connected to a bevel gear 4, a fixed column 5 is fixedly connected to the left side of the inner wall of the air collecting hood 1, the middle part of the fixed column 5 is rotatably connected to a rotating column 6, the right end of the rotating column 6 is fixedly connected to a bevel gear 2 7, the bevel gear 2 7 is meshed with the bevel gear 4, the other end of the rotating column 6 is fixedly connected to an induced fan blade 8, the middle part of the air collecting hood 1 is fixedly connected to a fixing frame 9, the top of the fixing frame 9 is rotatably connected to a rotating shaft 10, a plurality of stirring blades 11 are fixedly connected to the outer wall of the rotating shaft 10, a flow meter 12 is installed inside the air collecting hood 1, and a filter 1 is installed on the inner bottom wall of the air collecting hood 1 9. The interior of the filter 19 is rotatably connected to a second rotating shaft 13, to which an exhaust fan blade 15 is fixedly connected in the middle, and to which a bevel gear 3 14 is fixedly connected in the middle and upper part. A second motor 16 is fixedly connected to the left side of the bottom of the air collecting hood 1, and a connecting rod 17 is fixedly connected to the output end of the second motor 16. The right end of the connecting rod 17 is fixedly connected to a fourth bevel gear 18. The fourth bevel gear 18 is meshed with the third bevel gear 14. The top of the air collecting hood 1 is connected to an air inlet pipe 20, and a screen 21 is installed on the inner wall of the air inlet pipe 20. The left side of the interior of the air collecting hood 1 is connected to an adjusting mechanism 2, which is used to adjust the fixed pipe. An operating table 33 is installed on the front side of the outer wall of the air collecting hood 1, and a button 32 is installed on the front side of the outer wall of the operating table 33. An analysis panel 31 is provided on the top of the button 32.

[0040] Specifically, the operator adjusts the air hood 1 to form a closed chamber, turns on the induced draft fan to guide the air to mix with the exhaust gas and then discharge it. The clean gas and the purified exhaust gas pass through the flow meter 12, the speed is measured and the data is transmitted to the analysis unit to evaluate the equipment status. The air hood 1 is made of Q235 steel and is equipped with stirring blades 11, flow meter 12 and filter 19 to ensure air flow mixing and purification. The device can be automatically deployed and recycled to improve the convenience and safety of operation. The filter 19 is equipped with a HEPA filter to remove particulate matter to ensure detection accuracy. The inner wall of the air inlet pipe 20 is equipped with a screen. Net 21, improves the practicality and reliability of the device, meets the needs of small-scale workplaces, promotes industry standardization, simplifies management and maintenance processes, reduces labor costs, and ensures long-term stable operation. The left side of the interior of the gas collecting hood 1 is connected to the adjustment mechanism 2, and the adjustment mechanism 2 is used to adjust the fixed pipeline to adapt to different work needs. An operating table 33 is installed on the front side of the outer wall of the gas collecting hood 1, and a button 32 is installed on the front side of the outer wall of the operating table 33. The button 32 is used to operate various functions of the gas collecting hood 1. An analysis panel 31 is set on the top of the button 32 to display the working status and parameters of the gas collecting hood 1.

[0041] Reference Figure 1 、 Figure 3 and Figure 5, the adjusting mechanism 2 includes a sleeve 201, which is connected to the left side of the interior of the gas collecting cover 1, and a snake tube 202 is fixedly connected to the outer wall of the sleeve 201. A plurality of brackets 203 are installed on the left and right sides of the outer wall of the snake tube 202, and an adjusting gear 1 204 is fixedly connected to the outer wall of the bracket 203. The top of the adjusting gear 1 204 is rotatably connected to a fixed block 205, and the bottom right side of the fixed block 205 is rotatably connected to an adjusting gear 206. The adjusting gear 206 is meshed with the adjusting gear 1 204, and the right side of the adjusting gear 206 is fixedly connected to the outer wall of the bracket 203. Slide grooves 34 are provided at the four corners of the gas collecting cover 1, and a slider 35 is slidably connected to the inside of the slide groove 34. A pointer 36 is installed on the right side of the outer wall of the flow meter 12, and a dial 37 is provided on the front side of the outer wall of the pointer 36;

[0042] Specifically, the left side of the gas collecting hood 1 is connected to the sleeve 201, and the outer wall is fixed with a snake skin tube 202, which is convenient for collecting gas from multiple angles. The snake skin tube 202 is supported by a bracket 203, and the bracket 203 is equipped with an adjusting gear 1 204, which is located at the top and can be rotated to adjust the position. The bottom of the adjusting gear 1 204 is connected to the adjusting gear 2 206, which mesh with each other to ensure the accuracy of the adjustment. The adjusting gear 2 206 is fixed to the outer wall of the bracket 203 to enhance stability. This design facilitates precise adjustment of the positions of the sleeve 201 and the snake skin tube 202 to achieve multi-angle collection, combines practicality and stability, is easy to operate, and ensures the full operation of the equipment. , slide grooves 34 are opened at the four corners of the gas collecting hood 1, and the slide grooves 34 are connected to the sliders 35 along its internal structure to facilitate the stability and flexibility of the gas collecting hood 1. In addition, in order to facilitate the observation and control of the gas flow, a pointer 36 is installed on the right side of the outer wall of the flowmeter 12. This pointer 36 can intuitively display the change in flow rate, and a dial 37 is specially provided on the front side of its outer wall, so that the user can accurately read the value of the gas flow rate, which not only improves the operation convenience of the gas collecting hood 1, but also enhances its measurement accuracy, ensuring the precise control of the gas flow rate in experiments or industrial processes.

[0043] Reference Figure 1 、 Figure 2 and Figure 3 The outer walls of the multiple sliders 35 are rotatably connected to the adjustment frame 1 22, the middle part of the adjustment frame 1 22 is rotatably connected to the adjustment frame 2 23, the outer walls of the multiple adjustment frames 23 are rotatably connected to the telescopic rod 1 24, the inside of the telescopic rod 1 24 is slidably connected to the telescopic rod 25, the bottom of the telescopic rod 25 is fixedly connected to the foot pad 28, the outer wall of the telescopic rod 1 24 is equidistantly opened with a plurality of fixing holes 27, the inside of the fixing holes 27 is installed with a plug 26, the top of the multiple telescopic rods 1 24 is fixedly connected to the base 29, and the inside of the base 29 is installed with a warning light 30;

[0044] Specifically, the outer walls of the plurality of sliders 35 are rotatably connected to the adjustment frame 1 22, so that the adjustment frame 1 22 can flexibly adjust its position. The middle part of the adjustment frame 1 22 is rotatably connected to the adjustment frame 2 23, ensuring that the adjustment frame 23 can also be rotated and adjusted accordingly. The outer wall of the adjustment frame 23 is rotatably connected to the outer wall of the telescopic rod 1 24, so that the telescopic rod 1 24 can be freely extended and retracted within a certain range. The interior of the telescopic rod 1 24 is slidably connected to the telescopic rod 25, so that the telescopic rod 25 can slide freely inside the telescopic rod 1 24, thereby achieving a more precise length. The bottom of the telescopic rod 25 is fixedly connected with a foot pad 28. The telescopic rod is recommended to be made of aluminum alloy, which is light and durable to ensure the stability of the telescopic rod 24. A plurality of fixing holes 27 are equidistantly provided on the outer wall, and a plug 26 is installed inside the fixing hole 27. The function of the plug 26 is to keep the telescopic rod 24 stable when it is extended and retracted to prevent it from shaking unnecessary. The tops of the plurality of telescopic rods 24 are fixedly connected to a base 29. A warning light 30 is installed inside the base 29. The warning light 30 can send a warning signal when needed, thereby enhancing its safety performance.

[0045] Working principle: The operator adjusts the height and position of the gas hood 1 according to the actual conditions of the target area, so that the membrane cloth fits tightly to the surrounding environment to form a closed chamber, and then turns on the induced draft fan to guide the outside air into the chamber through the air inlet and mix it with the exhaust gas before being discharged through the exhaust port. During this period, the clean gas after pretreatment flows through the flow meter 12. The gas hood 1 is welded with Q235 steel, which has sufficient strength and stability. A motor 3 is fixedly connected to the left side of the interior, and the output end of this motor 3 is connected to the bevel gear 4 through rotation; on the left side of the inner wall of the gas hood 1, a fixed column 5 is also fixedly connected, and the middle part of the fixed column 5 is connected to the rotating column 6 through rotation. The right end of the rotating column 6 is fixedly connected to the bevel gear 2 7, and the bevel gear is meshed with the bevel gear 4; the rotation of the rotating column 6 is ensured, and the other end of the rotating column 6 is fixedly connected to the induced draft fan blade 8, which is used to guide the airflow to the inside of the gas hood 1. The middle part of 1 is fixedly connected to a fixing frame 9; the top of the fixing frame 9 is connected to a rotating shaft 10 through rotation, and the outer wall of the rotating shaft 10 is fixedly connected to a plurality of stirring blades 11; the function of the blades is to stir the air in the gas collecting hood 1 to ensure sufficient mixing of the airflow. A flow meter 12 is installed inside the gas collecting hood 1. The flow meter 12 module uses the thermal conductivity principle to monitor the gas flow rate and feeds back to the data analysis unit in real time for calculation and processing. The entire device can be automatically deployed and recovered by remote control, which greatly improves the convenience and safety of on-site operation. A filter 19 is installed on the inner bottom wall of the air hood 1. The filter 19 module has a built-in HEPA filter for removing particulate matter and impurities in the exhaust gas to ensure the accuracy of subsequent detection. The internal rotation of the filter 19 is connected to a rotating shaft 2 13; the middle part of the rotating shaft 2 13 is fixedly connected to the exhaust fan blade 15, which is used to discharge the filtered air to meet the emission standards. The middle and upper part of the rotating shaft 2 13 is fixedly connected to the bevel gear 3 14, which is meshed with the bevel gear 2 7 to ensure the rotation of the exhaust fan blade 15; the bottom left side of the air hood 1 is fixedly connected to Motor 2 16, the output end of motor 2 16 is fixedly connected to a connecting rod 17, the right end of connecting rod 17 is fixedly connected to a bevel gear 4 18, which is meshed with bevel gear 3 14 to ensure the rotation of connecting rod 17; the top of the air collection hood 1 is connected to the air inlet pipe 20, and the inner wall of the air inlet pipe 20 is installed with a screen 21 to improve the practicality and reliability of the exhaust gas collection device, fill the market demand for professional exhaust gas collection efficiency evaluation tools, simplify management and maintenance processes, reduce labor costs, and ensure long-term stable operation;

[0046] A sleeve 201 is connected to the left side of the interior of the gas collecting hood 1. The sleeve 201 is made of a flexible membrane cloth made of flame-retardant PVC material, which can effectively seal various irregular-shaped discharge ports to prevent gas leakage. A snake-skin tube 202 is fixedly connected to its outer wall. The snake-skin tube 202 not only serves as a connection, but also facilitates the collection of gas at different angles and realizes adjustment at different angles. A plurality of brackets 203 are respectively installed on the left and right sides of its outer wall. The bracket 203 not only provides a stable support for the snake-skin tube 202, but also can be adjusted in position through the adjustment gear 204 thereon. The adjustment gear 204 is located at the top of the bracket 203. Its design allows the user to adjust the position of the snake-skin tube 202 by rotating it to adapt to different usage requirements. Turn the right side of the bottom of the adjustment gear 204 to adjust the position of the snake-skin tube 202. It is dynamically connected to the adjusting gear 2 206, and the adjusting gear 206 and the adjusting gear 1 204 are meshed with each other to ensure the accuracy and stability of the adjustment. The right side of the adjusting gear 206 is directly fixed to the outer wall of the bracket 203, which not only ensures the stability of the adjusting gear 206, but also makes the entire adjusting mechanism 2 more stable and reliable during operation. Through such a design, the user can easily and accurately adjust the position of the sleeve 201 and the snake skin tube 202 to achieve collection at different angles. The design of the entire system fully considers the combination of practicality and stability, making the operation easier, while also ensuring the comprehensiveness of the operation of the equipment.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An exhaust gas collection efficiency evaluation device and an exhaust gas collection device, comprising an exhaust gas collection hood (1), characterized in that: The left side of the interior of the air collecting hood (1) is fixedly connected to a motor 1 (3), the output end of the motor 1 (3) is rotatably connected to a bevel gear 1 (4), the left side of the inner wall of the air collecting hood (1) is fixedly connected to a fixed column (5), the middle part of the fixed column (5) is rotatably connected to a rotating column (6), the right end of the rotating column (6) is fixedly connected to a bevel gear 2 (7), the bevel gear 2 (7) is meshed with the bevel gear 1 (4), the other end of the rotating column (6) is fixedly connected to an induced fan blade (8), the middle part of the air collecting hood (1) is fixedly connected to a fixed frame (9), the top of the fixed frame (9) is rotatably connected to a rotating shaft 1 (10), the outer wall of the rotating shaft 1 (10) is fixedly connected to a plurality of stirring blades (11), a flow meter (12) is installed inside the air collecting hood (1), and the inner bottom of the air collecting hood (1) is fixedly connected to a rotating shaft 1 (10). A filter (19) is installed on the wall, and the interior of the filter (19) is rotatably connected to a second rotating shaft (13), and the middle part of the second rotating shaft (13) is fixedly connected to an exhaust fan blade (15), and the middle and upper part of the second rotating shaft (13) is fixedly connected to a third bevel gear (14). The left side of the bottom of the air collecting hood (1) is fixedly connected to a second motor (16), and the output end of the second motor (16) is fixedly connected to a connecting rod (17), and the right end of the connecting rod (17) is fixedly connected to a fourth bevel gear (18), and the fourth bevel gear (18) is meshed with the third bevel gear (14). The top of the air collecting hood (1) is connected to an air inlet pipe (20), and a screen (21) is installed on the inner wall of the air inlet pipe (20). The left side of the interior of the air collecting hood (1) is connected to an adjustment mechanism (2), and the adjustment mechanism (2) is used to adjust the fixed pipe.

2. The exhaust gas collection efficiency evaluation device and the exhaust gas collection device according to claim 1, characterized in that: The regulating mechanism (2) comprises a sleeve (201), the sleeve (201) being connected to the inner left side of the gas collecting hood (1), the outer wall of the sleeve (201) being fixedly connected to a corrugated tube (202), a plurality of brackets (203) being installed on the left and right sides of the outer wall of the corrugated tube (202), the outer wall of the bracket (203) being fixedly connected to an regulating gear 1 (204), the top of the regulating gear 1 (204) being rotatably connected to a fixed block (205), the bottom right side of the fixed block (205) being rotatably connected to an regulating gear 2 (206), the regulating gear 2 (206) being meshed with the regulating gear 1 (204), and the right side of the regulating gear 2 (206) being fixedly connected to the outer wall of the bracket (203).

3. The exhaust gas collection efficiency evaluation device and the exhaust gas collection device according to claim 1, characterized in that: Slide grooves (34) are provided at the four corners of the air collecting hood (1), and sliders (35) are slidably connected inside the slide grooves (34).

4. The exhaust gas collection efficiency evaluation device and the exhaust gas collection device according to claim 3, characterized in that: The outer walls of the plurality of sliders (35) are rotatably connected to an adjustment frame 1 (22), and the middle portion of the adjustment frame 1 (22) is rotatably connected to an adjustment frame 2 (23).

5. The exhaust gas collection efficiency evaluation device and the exhaust gas collection device according to claim 4, characterized in that: The outer wall of the plurality of adjustment frames (23) is rotatably connected to the telescopic rod (24), the interior of the telescopic rod (24) is slidably connected to the telescopic rod (25), the bottom of the telescopic rod (25) is fixedly connected to the foot pad (28), the outer wall of the telescopic rod (24) is equidistantly provided with a plurality of fixing holes (27), and the interior of the fixing holes (27) is provided with a plug (26).

6. The exhaust gas collection efficiency evaluation device and the exhaust gas collection device according to claim 5, characterized in that: The top ends of the plurality of telescopic rods (24) are fixedly connected to a base (29), and a warning light (30) is installed inside the base (29).

7. The exhaust gas collection efficiency evaluation device and the exhaust gas collection device according to claim 1, characterized in that: An operating table (33) is installed on the front side of the outer wall of the gas collecting hood (1), a button (32) is installed on the front side of the outer wall of the operating table (33), and an analysis panel (31) is provided on the top of the button (32).

8. The exhaust gas collection efficiency evaluation device and the exhaust gas collection device according to claim 1, characterized in that: A pointer (36) is installed on the right side of the outer wall of the flow meter (12), and a scale plate (37) is provided on the front side of the outer wall of the pointer (36).

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