Explosion-proof harmful waste gas purification treatment integrated device of laboratory ventilation system

Abstract

The invention discloses an explosion-proof harmful waste gas purification treatment integrated device with a laboratory ventilation system, relates to the technical field of waste gas treatment, and aims to realize different ventilation area adjustment modes by utilizing a curtain type air control assembly, form follow-up adjustment of a waste gas ventilation area, and improve the purification efficiency of the waste gas. The waste gas purification treatment process can follow the specific dynamic adjustable effect of the ventilation area, the active adjustment of the waste gas ventilation quantity is realized by combining and cooperatively utilizing the air quantity adjusting assembly, the mutual balance between the waste gas adsorption quantity and the waste gas concentration in the waste gas treatment process is ensured, and the energy-saving effect is improved; the purification and exhaust monitoring system can be used for executing action guidance aiming at the waste gas concentration change in the waste gas treatment process, so that the problem that the real-time waste gas treatment amount and the current waste gas treatment device cannot achieve relative balance is avoided, and the waste gas purification treatment device and the current waste gas treatment device can be matched with each other; the method is applied to a laboratory to implement instructive early warning actions.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to an integrated device for the purification and treatment of explosion-proof hazardous waste gas in laboratory ventilation systems. Background Technology

[0002] Laboratory exhaust gases are complex and pose serious hazards. Treatment methods such as adsorption, absorption, combustion, and catalytic oxidation must be selected based on their specific components. The core purpose is to reduce air pollutant emissions, curb environmental problems such as acid rain and photochemical smog, reduce the risk of laboratory personnel and surrounding residents being exposed to toxic substances, and meet environmental regulations.

[0003] As disclosed in the energy-saving and environmentally friendly laboratory waste gas treatment device with application number 2018204784365, the laboratory waste gas treatment is completed by a series of operations including combustion, spray dust removal and purification of harmful gases. However, due to the complex composition of laboratory waste gas, traditional purification devices cannot cope with the balance between the real-time waste gas treatment volume and the current treatment device. In other words, how to accurately control the influence of parameters such as waste gas adsorption capacity and waste gas concentration to achieve efficient and energy-saving emission management is a problem that needs to be solved. Therefore, this application proposes a solution. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated explosion-proof hazardous waste gas purification and treatment device for laboratory ventilation systems, which solves the problem of how to balance parameters such as waste gas adsorption capacity and waste gas concentration.

[0005] The objective of this invention can be achieved through the following technical solution: an explosion-proof integrated device for the purification and treatment of hazardous waste gas in a laboratory ventilation system, comprising a purification box, an air regulating duct, and an exhaust box, wherein a controller for ventilation regulation is embedded in the purification box, and a purification and exhaust monitoring system is installed in the controller;

[0006] The exhaust gas purification monitoring system includes a parameter detection unit, an analysis and decision-making unit, and an execution unit that are interconnected. The parameter detection unit is used to acquire the exhaust gas concentration change value Δc during the exhaust gas purification process and send the exhaust gas concentration change value Δc to the analysis and decision-making unit. The analysis and decision-making unit compares the received exhaust gas concentration change value Δc with the preset optimal value Δc in the exhaust gas purification monitoring system. max Comparative analysis;

[0007] When Δc > Δc max When Δc = Δc, it indicates that the current exhaust gas concentration purification rate is better than the safety threshold and a ventilation adjustment signal is generated; when Δc = Δc max When Δc < Δc, it indicates that the current exhaust gas concentration purification amount equals the safety threshold and a signal is generated to maintain the value unchanged; when Δc < Δc maxWhen this occurs, it indicates that the current exhaust gas concentration and purification capacity are below the safety threshold, and a reduction adjustment signal is generated.

[0008] The analysis and decision-making unit sends the air reduction adjustment signal and the air expansion adjustment signal to the actuator unit, and the actuator unit controls the relevant components to perform actions according to the air reduction adjustment signal and the air expansion adjustment signal;

[0009] The air regulating duct is connected end to end to the purification box and the exhaust box. The exhaust box is connected to an exhaust pipe for direct air exhaust. The air regulating duct is equipped with a curtain-type air control component that is communicatively connected to the purification exhaust monitoring system. The exhaust box is equipped with an air volume adjustment component.

[0010] The further configuration is as follows: the curtain-type air control assembly includes a variable frame rotatably disposed in the middle of the air regulating duct, the variable frame having evenly distributed ventilation holes, the variable frame being vertically folded and fitted with a curtain sealing strip through the ventilation holes, and the folding and unfolding of the curtain sealing strip controlling the ventilation area of ​​the ventilation holes.

[0011] The following configuration is further provided: a second motor is installed at the bottom of the air regulating duct, the output end of the second motor is connected to the adapter frame, a guide column located in the middle of the adapter frame is installed in the middle of the bottom of the air regulating duct, a guide sleeve is sleeved on the guide column, and a rotating plate rotatably connected to the air regulating duct is installed at the upper end of the guide sleeve.

[0012] The configuration is further defined as follows: a straight pull rod extending to the bottom of the air regulating duct is installed on the outer side of the rotating plate, the folded end of the curtain sealing strip is inserted into the straight pull rod, and the top end of the curtain sealing strip is connected to a connecting ring sleeved to the outside of the guide sleeve.

[0013] The configuration is further defined as follows: a motor three is installed above the air regulating duct, and the output end of the motor three is connected to a linear screw that is threadedly connected to the guide sleeve.

[0014] The configuration is further defined as follows: the air volume regulating component includes an exhaust fan disposed inside the exhaust box, a motor for controlling the speed of the exhaust fan is installed outside the exhaust box, and an air guide cone is installed at the end of the exhaust fan near the air intake direction.

[0015] A further feature is provided: a spray pipe for treating laboratory waste gas is installed through the purification box.

[0016] A further configuration is provided: a variable diameter bag is installed at one end of the air duct away from the air intake direction, and the other end of the variable diameter bag is connected to the air intake of the exhaust box, with the diameter of the variable diameter bag gradually increasing from the air intake direction.

[0017] The present invention has the following beneficial effects:

[0018] 1. This invention addresses the problem of the inability to achieve a relative balance between the real-time waste gas treatment volume and the current waste gas treatment device. It utilizes a curtain-type air control component to achieve different ventilation area adjustment methods, enabling dynamic adjustment of the waste gas ventilation area. This allows the waste gas purification process to dynamically adjust the ventilation area accordingly. Combined with a co-operating airflow adjustment component, it achieves proactive adjustment of the waste gas ventilation volume, ensuring a balance between waste gas adsorption and concentration during waste gas treatment, thus improving energy efficiency. Furthermore, it utilizes a purification exhaust monitoring system to provide action guidance based on changes in waste gas concentration during treatment, preventing the inability to achieve a relative balance between the real-time waste gas treatment volume and the current waste gas treatment device. The combination of these two systems allows the waste gas purification device to implement guiding and early warning actions in laboratory applications.

[0019] 2. In the process of adjusting the ventilation area and ventilation volume, the dual adjustable ventilation area combined with the adaptive adjustment process of ventilation volume corresponds the purification efficiency of the laboratory exhaust gas purification process with the ventilation area and ventilation volume. In the exhaust gas treatment process, the mutual balance between the exhaust gas adsorption amount and the exhaust gas concentration is completed, thereby improving the energy saving effect. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the rear view structure of the present invention;

[0023] Figure 3 This is a cross-sectional view of the installation structure of the exhaust pipe of the present invention;

[0024] Figure 4 This is a schematic diagram of the installation of the air regulating duct of the present invention;

[0025] Figure 5 This is a cross-sectional view of the air regulating duct and variable diameter bag of the present invention;

[0026] Figure 6 This is a cross-sectional view of the curtain-type air control assembly of the present invention;

[0027] Figure 7 This is a schematic diagram of the installation of the curtain sealing tape of the present invention;

[0028] Figure 8This is a front view of the air regulating duct of the present invention;

[0029] Figure 9 This is a top sectional view of the air regulating duct of the present invention.

[0030] In the diagram: 1. Purification box; 2. Air duct; 3. Variable diameter bag; 4. Exhaust box; 5. Exhaust pipe; 6. Rain cover; 7. Motor 1; 8. Motor 2; 9. Motor 3; 10. Spray pipe; 11. Exhaust fan; 12. Air guide cone; 13. Rotating plate; 14. Guide sleeve; 15. Straight-moving screw; 16. Variable frame; 17. Ventilation hole; 18. Straight tie rod; 19. Curtain sealing strip; 20. Connecting ring; 21. Guide column. Detailed Implementation

[0031] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: To address the issue of balancing parameters such as waste gas adsorption capacity and waste gas concentration, the following technical solution is proposed:

[0033] Reference Figure 1 , Figures 3-9 As shown, the explosion-proof hazardous waste gas purification and treatment integrated device of the laboratory ventilation system in this embodiment includes a purification box 1, an air regulating duct 2, and an exhaust box 4. A spray pipe 10 for spraying laboratory waste gas is installed through the purification box 1. The air regulating duct 2 is connected to the purification box 1 and the exhaust box 4 end to end. A variable diameter bag 3 is installed at one end of the air regulating duct 2 away from the air inlet direction. The other end of the variable diameter bag 3 is connected to the air inlet of the exhaust box 4. The diameter of the variable diameter bag 3 gradually increases from the air inlet direction. An exhaust pipe 5 for direct air exhaust is connected to the exhaust box 4. A curtain-type air control component that communicates with the purification exhaust monitoring system is installed inside the air regulating duct 2. An air volume adjustment component is installed inside the exhaust box 4.

[0034] Based on the purification treatment of laboratory exhaust gas, which is currently handled by combustion, spraying, and purification adsorption in existing technologies, the exhaust gas is directly discharged into the atmosphere. The curtain-type air control component and air volume adjustment component added in this invention are used to adjust the ventilation area and exhaust volume during the exhaust gas treatment process. For the purification treatment process of exhaust gas concentration, the concentration of exhaust gas after treatment is monitored and calculated, and targeted adjustments are made to the ventilation area and exhaust volume.

[0035] Reference Figures 4-9As shown, the curtain-type air control assembly includes a variable frame 16 rotatably disposed in the middle of the air regulating duct 2. The variable frame 16 has evenly distributed ventilation holes 17. The variable frame 16 is vertically folded and fitted with a curtain sealing strip 19 through the ventilation holes 17. The folding and unfolding of the curtain sealing strip 19 controls the ventilation area of ​​the ventilation holes 17. A second motor 8 is installed at the bottom of the air regulating duct 2. The output end of the second motor 8 is connected to the variable frame 16.

[0036] The specific adjustment process of the ventilation area by the curtain-type air control component is as follows: the start of motor 28 can drive the adapter frame 16 to rotate, and the ventilation hole 17 on the adapter frame 16 will rotate accordingly. Based on the structural design of filling the air duct 2, the corresponding adjustment can be completed in terms of ventilation area.

[0037] Reference Figure 6 As shown, a guide column 21 located in the middle of the variable frame 16 is installed in the middle of the inner bottom of the air conditioning duct 2. A guide sleeve 14 is attached to the guide column 21. A rotating plate 13 that is rotatably connected to the air conditioning duct 2 is installed at the upper end of the guide sleeve 14.

[0038] The rotation process of the variable frame 16 is based on the rotating plate 13. When the variable frame 16 rotates, it rotates relative to the air duct 2 through the rotating plate 13. Furthermore, it changes the orientation of each ventilation hole 17 on the variable frame 16 until the current treatment efficiency meets the corresponding emission after the exhaust gas is purified.

[0039] Reference Figure 5 As shown, a straight pull rod 18 extending to the bottom of the air conditioning duct 2 is installed on the outer side of the rotating plate 13. The folded end of the curtain sealing strip 19 is inserted into the straight pull rod 18, and the top end of the curtain sealing strip 19 is connected to a connecting ring 20 sleeved to the outside of the guide sleeve 14. A motor 3 9 is installed above the air conditioning duct 2. The output end of the motor 3 9 is connected to a straight sliding screw 15 threadedly connected to the guide sleeve 14.

[0040] The adjustment process of the curtain sealing strip 9 is as follows: the motor 3 9 starts and drives the linear screw 15 to rotate. The guide sleeve 14 that meshes with it drives the connecting ring 20 and the curtain sealing strip 9 to move up and down under the guidance of the straight pull rod 18. Thus, on the basis of changing the ventilation area as mentioned above, the ventilation area is further adjusted. Under the dual adjustment of the ventilation area, the purification effect of the exhaust gas purification process can be just adapted to the ventilation volume, thereby improving the energy saving effect.

[0041] Reference Figure 3 As shown, the air volume regulating component includes an exhaust fan 11 installed inside the exhaust box 4, a motor 7 for controlling the speed of the exhaust fan 11 installed outside the exhaust box 4, and an air guide cone 12 installed at the end of the exhaust fan 11 near the air intake direction.

[0042] The adjustment process of the air volume adjustment component is as follows: Based on the concentration change of laboratory exhaust gas after purification treatment, the speed of exhaust fan 11 is controlled by motor 7 to complete the corresponding adjustment of ventilation volume. Then, on the basis of the above-mentioned adjustment of ventilation area, the adjustment of ventilation volume is supplemented. The combination of the two can more precisely distribute the air volume and improve the efficiency of laboratory exhaust gas treatment.

[0043] Basic principle: The dual adjustable ventilation area combined with the adaptive adjustment process of ventilation volume corresponds the purification efficiency of laboratory exhaust gas purification process with ventilation area and ventilation volume, thereby achieving a balance between exhaust gas adsorption capacity and exhaust gas concentration during exhaust gas treatment and improving energy saving effect.

[0044] It should be noted that the electric components such as motor 7, motor 8, and motor 9 shown in the accompanying drawings of this invention are all fixed by additional fixing structures not shown in the drawings, and the purification box 1, the air regulating duct 2, the exhaust box 4, and the sensor for monitoring gas concentration in this invention are all designed with explosion-proof structures.

[0045] Example 2: Further intelligent processing of the exhaust gas treatment process in the laboratory ventilation system, including a controller for ventilation regulation embedded in the purification box 1, and a purification exhaust monitoring system installed in the controller;

[0046] The purification and exhaust monitoring system includes a parameter detection unit, an analysis and decision-making unit, and an execution unit that are connected in communication. The parameter detection unit is used to obtain the waste gas concentration change value Δc during the waste gas purification period. The waste gas concentration change value Δc represents the concentration difference between the waste gas entering and exiting the purification box 1. It is measured by gas concentration sensors installed at the inlet and outlet of the purification box 1. The gas concentration sensors are designed with an explosion-proof structure. The waste gas concentration change value Δc is sent to the analysis and decision-making unit.

[0047] The analysis and decision-making unit compares the received waste gas concentration change value Δc with the preset optimal value Δc in the purification and exhaust monitoring system. max Comparative analysis;

[0048] When Δc > Δc max When Δc = Δc, it indicates that the current exhaust gas concentration purification rate is better than the safety threshold and a ventilation adjustment signal is generated; when Δc = Δc max When Δc < Δc, it indicates that the current exhaust gas concentration purification amount equals the safety threshold and a signal is generated to maintain the value unchanged; when Δc < Δc max When the current exhaust gas concentration purification rate is below the safety threshold, a shrinkage adjustment signal is generated. The analysis and decision-making unit sends the shrinkage adjustment signal and the expansion adjustment signal to the actuator unit, which controls the relevant components to perform actions based on the shrinkage adjustment signal and the expansion adjustment signal.

[0049] When the actuator unit receives the air reduction adjustment signal, it starts the control motor 8 and the control motor 9. Motor 8 drives the adapter frame 16 to rotate, and the ventilation hole 17 on the adapter frame 16 rotates accordingly, thereby reducing the ventilation area of ​​the ventilation hole 17. At the same time, the start of motor 9 drives the linear screw 15 to rotate, and the guide sleeve 14 engaged with it drives the connecting ring 20 and the curtain sealing belt 9 to move upward under the guidance of the straight pull rod 18. The process of the curtain sealing belt 9 unfolding upward completes the reduction of the ventilation area of ​​the corresponding ventilation hole 17.

[0050] When the actuator unit receives the ventilation adjustment signal, it starts the second motor 8 and the third motor 9. The second motor 8 drives the adapter frame 16 to rotate, and the ventilation hole 17 on the adapter frame 16 rotates accordingly, thereby expanding the ventilation area of ​​the ventilation hole 17. The third motor 9 starts and drives the linear screw 15 to rotate. The guide sleeve 14 that meshes with it drives the connecting ring 20 and the curtain sealing strip 9 to move downward under the guidance of the straight pull rod 18. The downward folding process of the curtain sealing strip 9 completes the expansion of the ventilation area of ​​the corresponding ventilation hole 17.

[0051] It should be further explained that when the actuator unit controls motors 2 (8) and 3 (9) to execute the air reduction and expansion adjustment signals, it also simultaneously adjusts the ventilation volume. Specifically, during air reduction adjustment, motor 1 (7) increases its speed to increase the rate of exhaust gas intake and exhaust, thereby corresponding to the current ventilation area and improving energy saving. During air expansion adjustment, motor 1 (7) decreases its speed to decrease the rate of exhaust gas intake and exhaust, thereby corresponding to the current ventilation area.

[0052] Combining Embodiments 1 and 2, it can be seen that: The curtain-type air control component can be used to achieve different ventilation area adjustment methods, forming a follow-up adjustment of the exhaust gas ventilation area. This allows the exhaust gas purification process to dynamically adjust the ventilation area accordingly. Combined with the air volume adjustment component, the exhaust gas ventilation volume can be actively adjusted, ensuring a balance between the exhaust gas adsorption amount and the exhaust gas concentration during the exhaust gas treatment process, thus improving energy efficiency. Furthermore, the purification exhaust monitoring system can provide action guidance based on changes in exhaust gas concentration during the exhaust gas treatment process, preventing the real-time exhaust gas treatment volume from failing to achieve a relative balance with the current exhaust gas treatment device. Therefore, the combination of these two systems enables the exhaust gas purification device to implement guiding and early warning actions in laboratory applications.

[0053] Thresholds, preset values, or preset ranges are set for result comparison and analysis to determine whether they are good or bad. The value of these thresholds is determined by a combination of large-scale model analysis of sample data and human experience. They can also be adjusted appropriately based on seasonal or rational factors.

[0054] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. An integrated explosion-proof hazardous waste gas purification and treatment device for a laboratory ventilation system, comprising a purification box (1), an air regulating duct (2), and an exhaust box (4), wherein the purification box (1) is externally equipped with a controller for ventilation regulation, characterized in that, The controller is equipped with a purification and exhaust monitoring system. The air regulating duct (2) is connected end to end to the purification box (1) and the exhaust box (4). The exhaust box (4) is connected to an exhaust pipe (5) for direct air exhaust. The air regulating duct (2) is equipped with a curtain-type air control component that is connected to the purification exhaust monitoring system. The exhaust box (4) is equipped with an air volume regulating component. The exhaust gas purification monitoring system includes a parameter detection unit, an analysis and decision-making unit, and an execution unit that are interconnected. The parameter detection unit is used to acquire the exhaust gas concentration change value Δc during the exhaust gas purification process and send the exhaust gas concentration change value Δc to the analysis and decision-making unit. The analysis and decision-making unit compares the received exhaust gas concentration change value Δc with the preset optimal value Δc in the exhaust gas purification monitoring system. max Comparative analysis; When Δc > Δc max When Δc = Δc, it indicates that the current exhaust gas concentration purification rate is better than the safety threshold and a ventilation adjustment signal is generated; when Δc = Δc max When Δc < Δc, it indicates that the current exhaust gas concentration purification amount equals the safety threshold and a signal is generated to maintain the value unchanged; when Δc < Δc max When this occurs, it indicates that the current exhaust gas concentration and purification capacity are below the safety threshold, and a reduction adjustment signal is generated. The analysis and decision-making unit sends the air reduction adjustment signal and the air expansion adjustment signal to the actuator unit, and the actuator unit controls the relevant components to perform actions according to the air reduction adjustment signal and the air expansion adjustment signal.

2. The integrated explosion-proof hazardous waste gas purification and treatment device for laboratory ventilation systems according to claim 1, characterized in that, The curtain-type air control assembly includes a variable frame (16) rotatably disposed in the middle of the air regulating duct (2). The variable frame (16) has evenly distributed ventilation holes (17). The variable frame (16) is vertically folded and fitted with a curtain sealing strip (19) through the ventilation holes (17). The folding and unfolding of the curtain sealing strip (19) controls the ventilation area of ​​the ventilation holes (17).

3. The integrated explosion-proof hazardous waste gas purification and treatment device for laboratory ventilation systems according to claim 2, characterized in that, The bottom of the air conditioning duct (2) is equipped with a second motor (8), the output end of the second motor (8) is connected to the adapter frame (16), the middle of the bottom of the air conditioning duct (2) is equipped with a guide column (21) located in the middle of the adapter frame (16), the guide column (21) is fitted with a guide sleeve (14), and the upper end of the guide sleeve (14) is equipped with a rotating plate (13) that is rotatably connected to the air conditioning duct (2).

4. The integrated explosion-proof hazardous waste gas purification and treatment device for laboratory ventilation systems according to claim 3, characterized in that, A straight pull rod (18) extending to the bottom of the air regulating duct (2) is installed on the outside of the rotating plate (13). The folded end of the curtain sealing strip (19) is inserted into the straight pull rod (18), and the top end of the curtain sealing strip (19) is connected to a connecting ring (20) sleeved to the outside of the guide sleeve (14).

5. The integrated explosion-proof hazardous waste gas purification and treatment device for laboratory ventilation systems according to claim 4, characterized in that, A motor (9) is installed above the air regulating duct (2), and the output end of the motor (9) is connected to a linear screw (15) that is threadedly connected to the guide sleeve (14).

6. The integrated explosion-proof hazardous waste gas purification and treatment device for laboratory ventilation systems according to claim 1, characterized in that, The air volume regulating component includes an exhaust fan (11) disposed in an exhaust box (4), a motor (7) for controlling the speed of the exhaust fan (11) is installed outside the exhaust box (4), and an air guide cone (12) is installed at the end of the exhaust fan (11) near the air intake direction.

7. The integrated explosion-proof hazardous waste gas purification and treatment device for laboratory ventilation systems according to claim 1, characterized in that, A spray pipe (10) for treating laboratory waste gas is installed through the purification box (1).

8. The integrated explosion-proof hazardous waste gas purification and treatment device for laboratory ventilation systems according to claim 1, characterized in that, The air regulating duct (2) is equipped with a variable diameter bag (3) at one end away from the air intake direction. The other end of the variable diameter bag (3) is connected to the air intake of the exhaust box (4). The diameter of the variable diameter bag (3) gradually increases from the air intake direction.

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