An exhaust gas collection device for exhaust gas treatment

Abstract

The utility model relates to waste gas treatment equipment technical field, concretely is a kind of waste gas collecting device for waste gas treatment, the support frame located in the filter plate front is equipped in the processing box, the both ends of support frame are slidably connected with processing box, the output end of motor is equipped with the threaded rod that penetrates the middle part of support frame, threaded rod is threadedly connected with support frame, the front end of support frame is fixedly arranged with the flow divider box, the rear end of flow divider box is equipped with multiple gas outlet pipes that penetrate support frame, the device is evenly covered by " flow divider box+gas outlet pipe+movable support frame " to realize airflow, multiple gas outlet pipes of the rear end of flow divider box can disperse waste gas into multiple airflow, avoid single airflow concentrated impact, support frame is slidably connected with slide groove through guide rail, can be moved up and down along processing box, drive flow divider box and gas outlet pipe synchronous movement, make multiple airflow can cover the whole effective filter surface of filter plate.

Description

Technical Field

[0001] This utility model relates to the technical field of waste gas treatment equipment, specifically to a waste gas collection device for waste gas treatment. Background Technology

[0002] In the field of waste gas treatment technology, waste gas collection and filtration is one of the core treatment links. In the existing technology, the conventional waste gas filtration process is as follows: the waste gas to be treated is continuously collected into a dedicated filter container, and impurities and particulate matter contained in the waste gas are intercepted and filtered through the filter plate set in the container to achieve preliminary purification. After filtration, the waste gas is discharged to the designated equipment through the pipeline.

[0003] However, this type of treatment method has obvious shortcomings: because the flow path of the exhaust gas in the filter container is relatively fixed, it is impossible to flexibly adjust the flow direction according to the overall distribution of the filter plate. As a result, the exhaust gas can only concentrate on contacting a local area of ​​the filter plate and cannot evenly cover the entire effective filtration surface of the filter plate. This problem will not only cause the filter plate to be overloaded locally and shorten its service life, but also make the effective filtration area of ​​the filter plate not fully utilized, directly affecting the exhaust gas filtration efficiency and the overall treatment effect. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a waste gas collection device for waste gas treatment.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a waste gas collection device for waste gas treatment, comprising a treatment box, a top cover and a frame, the top cover being fixed to the upper end of the treatment box, an air inlet pipe being provided at the front end of the treatment box, an exhaust pipe being provided at the rear end of the treatment box, a control module being fixedly installed on one side of the treatment box, and a motor being fixedly installed at the lower end of the treatment box.

[0008] Two limiting grooves are symmetrically arranged on the inner wall of the processing box. The frame passes through the top cover and is inserted into the limiting grooves on both sides. The filter plate is fixedly installed on the frame, and the top plate is fixedly installed at the top of the frame. The top plate is fixed to the upper end of the top cover.

[0009] The processing box has a support frame located in front of the filter plate. The two ends of the support frame are slidably connected to the processing box. The output end of the motor has a threaded rod that passes through the middle part of the support frame. The threaded rod is threadedly connected to the support frame. A diversion box is fixedly installed at the front end of the support frame. Multiple air outlet pipes that pass through the support frame are provided at the rear end of the diversion box. A conduit is provided at the front end of the diversion box. The air outlet end of the air inlet pipe is connected to the conduit through a flexible adapter.

[0010] To facilitate assembly of the top cover at the top of the processing box, the present invention is improved by fixing the top cover to the top of the processing box with screws.

[0011] To improve the utilization rate of the filter plate, the present invention includes an improvement in that the air inlet pipe is equipped with a flow detector, which is connected to the control module via an electrical signal.

[0012] To facilitate frame assembly, the present invention includes the following improvements: the lower surface of the top plate is tightly fitted to the upper surface of the top cover; a handle is provided at the upper end of the top plate; the top plate is fixed to the upper end of the top cover by screws; and the outer wall of the frame is tightly fitted to the inner wall of the limiting groove.

[0013] To improve the stability of the support frame during lifting, the present invention includes the following improvements: two guide rails are symmetrically arranged on the inner wall of the processing box, and the two ends of the support frame are provided with sliding grooves through which the guide rails pass, and the support frame and the guide rails slide together, with the guide rails having a T-shaped cross-section.

[0014] Furthermore, the present invention includes the following improvements: the upper and lower ends of the support frame are respectively provided with telescopic protective sleeves, the threaded rod passes through the telescopic protective sleeves, and the end of the telescopic protective sleeve away from the support frame is respectively fixed to the bottom of the processing box and the lower end of the top cover.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a waste gas collection device for waste gas treatment, which has the following beneficial effects:

[0017] This device achieves uniform airflow coverage through a "diversion box + outlet pipe + movable support frame". Multiple outlet pipes at the rear of the diversion box can disperse the exhaust gas into multiple airflows, avoiding the concentrated impact of a single airflow. The support frame can move up and down along the treatment box through the sliding cooperation of the guide rail and the slide groove, driving the diversion box and the outlet pipe to move synchronously, so that multiple airflows can cover the entire effective filtration surface of the filter plate.

[0018] Simultaneously, the control module is linked with the flow detector to adjust the lifting speed of the support frame in real time according to the exhaust gas flow (increases speed when the flow is large and decreases speed when the flow is small), further ensuring uniform contact between the airflow and the filter plate, greatly improving the utilization rate of the filter plate, avoiding local overload, extending the service life of the filter plate, and improving the exhaust gas filtration efficiency. Attached Figure Description

[0019] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a second-view three-dimensional structural diagram of the present invention;

[0021] Figure 3 This utility model Figure 1 The main view;

[0022] Figure 4 This is a schematic diagram of the telescopic protective sleeve in this utility model.

[0023] In the diagram: 1. Processing box; 2. Inlet pipe; 3. Exhaust pipe; 4. Flow detector; 5. Control module; 6. Top cover; 7. Limiting groove; 8. Frame; 9. Filter plate; 10. Top plate; 11. Support frame; 12. Threaded rod; 13. Guide rail; 14. Slide groove; 15. Diverter box; 16. Outlet pipe; 17. Conduit; 18. Adapter hose; 19. Telescopic protective sleeve; 20. Motor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 This utility model proposes a waste gas collection device for waste gas treatment, including a treatment box 1, a top cover 6 and a frame 8. The top cover 6 is fixed to the upper end of the treatment box 1. The front end of the treatment box 1 is provided with an air inlet pipe 2, the rear end of the treatment box 1 is provided with an exhaust pipe 3, a control module 5 is fixedly installed on one side of the treatment box 1, and a motor 20 is fixedly installed at the lower end of the treatment box 1.

[0026] Two limiting grooves 7 are symmetrically arranged on the inner wall of the processing box 1. The frame 8 penetrates the top cover 6 and is inserted into the limiting grooves 7 on both sides. The filter plate 9 is fixedly arranged on the frame 8. The top plate 10 is fixedly arranged on the top of the frame 8 and is fixed to the upper end of the top cover 6.

[0027] The processing box 1 is equipped with a support frame 11 located in front of the filter plate 9. The two ends of the support frame 11 are slidably connected to the processing box 1. The output end of the motor 20 is provided with a threaded rod 12 that passes through the middle part of the support frame 11. The threaded rod 12 is threadedly connected to the support frame 11. A diversion box 15 is fixedly installed at the front end of the support frame 11. The rear end of the diversion box 15 is provided with multiple air outlet pipes 16 that pass through the support frame 11. The front end of the diversion box 15 is provided with a conduit 17. The air outlet end of the air inlet pipe 2 is connected to the conduit 17 through a connecting hose 18.

[0028] The air intake pipe 2 is equipped with a flow detector 4, which is connected to the control module 5 via an electrical signal.

[0029] Connection and debugging of control module 5:

[0030] Fix the control module 5 to one side of the treatment box 1, establish an electrical signal connection between the control module 5 and the flow detector 4 through wires, and at the same time establish an electrical connection between the control module 5 and the motor 20; debug the control module 5 to ensure that the flow detector 4 can transmit the exhaust gas flow signal to the control module 5 in real time, and that the control module 5 can adjust the speed of the motor 20 according to the signal to realize the linkage control of "flow-speed".

[0031] Equipment operation and maintenance procedures:

[0032] Operation: After the equipment is started, the waste gas to be treated enters from the inlet pipe 2, and the flow detector 4 detects the waste gas flow in real time and transmits the signal to the control module 5;

[0033] Two guide rails 13 are symmetrically arranged on the inner wall of the processing box 1. The two ends of the support frame 11 are provided with sliding grooves 14 through which the guide rails 13 pass, and the support frame 11 and the guide rails 13 are slidably engaged. The cross section of the guide rails 13 is T-shaped.

[0034] The control module 5 adjusts the speed of the motor 20 according to the flow rate. The motor 20 drives the threaded rod 12 to rotate, causing the support frame 11 to move up and down along the guide rail 13. The exhaust gas flows into the diversion box 15 through the transfer hose 18 and the conduit 17, and then is evenly blown onto the filter plate 9 through multiple exhaust pipes 16. The exhaust gas filtered by the filter plate 9 is discharged from the exhaust pipe 3 at the rear end of the treatment box 1 to the subsequent treatment equipment.

[0035] maintain:

[0036] The top cover 6 is fixed to the upper end of the processing box 1 by screws.

[0037] When the filter plate 9 needs to be replaced or cleaned, unscrew the screws that fix the top plate 10, and pull it upwards using the handle at the top of the top plate 10 to remove the frame 8 and filter plate 9 from the processing box 1.

[0038] After maintenance, follow the reverse steps to reinsert frame 8 into limit slot 7 and fix top plate 10.

[0039] The upper and lower ends of the support frame 11 are respectively provided with telescopic protective sleeves 19, and the threaded rod 12 passes through the telescopic protective sleeves 19. The end of the telescopic protective sleeve 19 away from the support frame 11 is fixed to the bottom of the processing box 1 and the lower end of the top cover 6 respectively.

[0040] The device connects the intake pipe 2 and the duct 17 of the diversion box 15 through the adapter hose 18. When the support frame 11 moves up and down, the adapter hose 18 can flexibly extend, retract or bend with the displacement of the support frame 11, and the airflow channel will not be blocked due to the movement of the support frame 11, ensuring that the exhaust gas always flows stably.

[0041] In addition, the flow detector 4 monitors the airflow status in real time and the control module 5 dynamically adjusts the speed of the motor 20 to match the airflow speed with the contact efficiency of the filter plate 9, which further ensures the continuity of waste gas treatment and avoids the filtration effect being affected by airflow fluctuations.

[0042] The telescopic protective sleeves 19 at the upper and lower ends of the support frame 11 can completely cover the threaded rod 12, isolate the threaded rod 12 from the exhaust gas and impurities in the treatment box 1, prevent particulate matter and corrosive components in the exhaust gas from adhering to the surface of the threaded rod 12, avoid thread jamming or corrosion damage, and ensure stable transmission between the threaded rod 12 and the support frame 11.

[0043] Meanwhile, the guide rail 13 adopts a T-shaped cross-section design, which, together with the slide groove 14 of the support frame 11, can effectively prevent the support frame 11 from falling off or shifting during movement, improve the overall operational reliability of the structure, reduce the frequency of component maintenance, and extend the overall service life of the equipment.

[0044] The frame 8 is fixed to the top plate 10 and the top cover 6 by screws. The frame 8 and the limiting groove 7 on the inner wall of the treatment box 1 are plug-in. The frame 8 and the filter plate 9 can be easily removed from the treatment box 1 by the handle at the top of the top plate 10 without disassembling a large number of complex parts, which facilitates the cleaning or replacement of the filter plate 9. The top cover 6 is fixed to the treatment box 1 by screws. The top cover 6 can be opened by unscrewing the screws, which makes it convenient to inspect and repair the support frame 11, the diversion box 15 and other components inside the treatment box 1. The overall maintenance operation is simple and greatly reduces labor and time costs.

[0045] Motor 20:

[0046] Selection Recommendation: Small stepper motor (recommended model: 42HS series) or DC servo motor (recommended model: 110SD series) selection criteria:

[0047] Load adaptation: The total load of moving parts such as support frame 11 and distribution box 15 in the device is relatively small. The torque of stepper motor 20 / servo motor 20 (42HS series torque ≥ 0.5 N·m, 110SD series torque ≥ 2 N·m) can meet the transmission requirements of threaded rod 12 and drive support frame 11 to rise and fall stably.

[0048] Precision controllable: The stepper motor 20 can be precisely controlled to adjust the rotation angle through pulse signals, and the servo motor 20 has a position feedback function. Both can work with the control module 5 to achieve precise adjustment of "speed-displacement", which can meet the needs of "adjusting lifting speed when the flow rate changes".

[0049] Environmental compatibility: Selecting a motor with a protection rating of IP54 or higher can prevent dust and a small amount of water vapor in the exhaust gas from entering the motor 20, avoiding short circuits or component corrosion, and extending service life.

[0050] Control Module 5:

[0051] Selection Recommendation: MCU-based integrated control board (recommended core chip: STM32F103 series or Arduino Mega2560) Selection criteria:

[0052] Functional compatibility: It is necessary to simultaneously implement the two core functions of "receiving the signal from the flow detector 4" and "outputting the control signal from the motor 20". The STM32 / Arduino series chips have multiple I / O interfaces, which can easily connect to the analog / digital signals from the flow detector 4, and control the speed of the motor 20 through PWM (pulse width modulation) or stepper drive module.

[0053] Highly expandable: The control board has reserved additional interfaces, which can be connected to temperature sensors, pressure sensors, etc. to expand the monitoring dimensions of the equipment; and it supports program iteration, which is convenient for optimizing the "flow-speed" linkage algorithm.

[0054] High stability: The industrial-grade control board (operating temperature -40℃~85℃) is selected, which can adapt to temperature fluctuations in the waste gas treatment scenario and avoid control failure caused by high or low temperature; the protection level is recommended to be IP40 or above to prevent dust from affecting circuit heat dissipation.

[0055] Flow detector 4:

[0056] Selection Recommendation: Gas turbine flow meter (for conventional exhaust gas) or thermal gas mass flow meter (for low-velocity / corrosive exhaust gas). Selection criteria:

[0057] Measurement accuracy: The gas turbine flow meter has an accuracy class of up to 1.0, and the thermal gas mass flow meter has an accuracy class of up to 0.5. Both can detect the exhaust gas flow in the inlet pipe 2 in real time and accurately, providing a reliable signal source for the control module 5.

[0058] Media compatibility: For conventional waste gases (such as machining waste gases and dust waste gases), turbine flow meters with metal housings (304 stainless steel) can be selected for corrosion resistance; for highly corrosive waste gases (such as chemical waste gases), thermal flow meters made of PTFE (polytetrafluoroethylene) can be selected to avoid corrosion of the housing.

[0059] Signal output: Supports 4-20mA analog signal or RS485 digital signal output, which is directly compatible with control module 5, eliminating the need for an additional signal conversion module and simplifying wiring.

[0060] Adapter hose 18:

[0061] Selection Recommendation: EPDM (Ethylene Propylene Diene Monomer) hose (for general applications) or PTFE (Polytetrafluoroethylene) corrugated hose (for highly corrosive applications). Selection criteria:

[0062] Weather and corrosion resistant: EPDM hoses are resistant to acids and alkalis and aging (outdoor service life ≥ 5 years), and can withstand the erosion of oil and dust in conventional exhaust gases; PTFE corrugated pipes are resistant to strong corrosion (resistant to sulfuric acid, hydrochloric acid, etc.) and have a temperature range of -200℃~260℃, making them suitable for high-temperature or highly corrosive exhaust gas scenarios.

[0063] Good flexibility: It can move up and down with the support frame 11 to extend, retract and bend flexibly. The EPDM / PTFE material hose has a small bending radius (EPDM bending radius ≥ 5 times the inner diameter, PTFE bending radius ≥ 3 times the inner diameter), and will not cause the hose to break or block the airflow due to movement.

[0064] Airflow adaptation: The inner diameter matches the diameter of the air inlet pipe 2 and the hose 17 (e.g., if the inner diameter of the air inlet pipe 2 is 50mm, the inner diameter of the hose can be selected as 50mm or 55mm) to avoid the increase in airflow resistance caused by the diameter deviation; the wall thickness is ≥3mm to ensure that it is not easily worn during long-term use, and at the same time has a certain pressure resistance (≥0.6MPa) to prevent negative pressure from flattening.

[0065] Telescopic protective sleeve 19:

[0066] Selection Recommendation: Accordion-style nylon fabric telescopic sleeve (for standard scenarios) or PVC-coated fabric telescopic sleeve (for wet scenarios). Selection Criteria:

[0067] Strong protection: The accordion-style structure can completely enclose the threaded rod 12, blocking dust and impurities in the exhaust gas from adhering to the thread surface and preventing the thread from jamming and affecting the transmission; the nylon cloth material is wear-resistant (wear resistance ≥ 5000 times of friction without damage), and the PVC coated cloth has additional waterproof properties, making it suitable for humid exhaust gas treatment environments.

[0068] Telescopic adaptation: The telescopic ratio can reach 1:5 (when the retracted length is 200mm, the extended length can reach 1000mm), which can cover the entire range of movement of the support frame 11, and there is no jamming during the telescopic process, which does not affect the lifting speed of the support frame 11.

[0069] Easy to install: Equipped with metal flanges or clips at both ends, it can be quickly fixed to the bottom of the processing box 1, the lower end of the top cover 6, and the upper and lower ends of the support frame 11. It is easy to disassemble and assemble, and facilitates the subsequent inspection and maintenance of the threaded rod 12. It is lightweight (nylon cloth cover ≤0.5kg / m) and will not increase the moving load of the support frame 11.

[0070] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0071] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0072] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A waste gas collection device for waste gas treatment, comprising a treatment box (1), a top cover (6), and a frame (8), wherein the top cover (6) is fixed to the upper end of the treatment box (1), characterized in that: The front end of the processing box (1) is provided with an air inlet pipe (2), the rear end of the processing box (1) is provided with an exhaust pipe (3), a control module (5) is fixedly installed on one side of the processing box (1), and a motor (20) is fixedly installed at the lower end of the processing box (1). Two limiting grooves (7) are symmetrically arranged on the inner wall of the processing box (1). The frame (8) penetrates the top cover (6) and is inserted into the limiting grooves (7) on both sides. The filter plate (9) is fixedly arranged on the frame (8). The top plate (10) is fixedly arranged at the top of the frame (8). The top plate (10) is fixed at the top of the top cover (6). The processing box (1) is equipped with a support frame (11) located in front of the filter plate (9). The two ends of the support frame (11) are slidably connected to the processing box (1). The output end of the motor (20) is equipped with a threaded rod (12) that passes through the middle part of the support frame (11). The threaded rod (12) is threadedly connected to the support frame (11). A diversion box (15) is fixedly installed at the front end of the support frame (11). A plurality of air outlet pipes (16) that pass through the support frame (11) are provided at the rear end of the diversion box (15). A conduit (17) is provided at the front end of the diversion box (15). The air outlet end of the air inlet pipe (2) is connected to the conduit (17) through a connecting hose (18).

2. The waste gas collection device for waste gas treatment according to claim 1, characterized in that: The top cover (6) is fixed to the upper end of the processing box (1) by screws.

3. The waste gas collection device for waste gas treatment according to claim 2, characterized in that: The air intake pipe (2) is equipped with a flow detector (4), and the flow detector (4) is connected to the control module (5) via an electrical signal.

4. The waste gas collection device for waste gas treatment according to claim 3, characterized in that: The lower surface of the top plate (10) is closely fitted with the upper surface of the top cover (6). The upper end of the top plate (10) is provided with a handle. The top plate (10) is fixed to the upper end of the top cover (6) by screws. The outer wall of the frame (8) is closely fitted with the inner wall of the limiting groove (7).

5. The waste gas collection device for waste gas treatment according to claim 4, characterized in that: Two guide rails (13) are symmetrically arranged on the inner wall of the processing box (1). The two ends of the support frame (11) are provided with sliding grooves (14) through which the guide rails (13) pass. The support frame (11) and the guide rails (13) are slidably engaged. The cross section of the guide rails (13) is T-shaped.

6. The waste gas collection device for waste gas treatment according to claim 5, characterized in that: The upper and lower ends of the support frame (11) are respectively provided with telescopic protective sleeves (19), and the threaded rod (12) passes through the telescopic protective sleeves (19). The end of the telescopic protective sleeve (19) away from the support frame (11) is respectively fixed to the bottom of the processing box (1) and the lower end of the top cover (6).

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