Laboratory spraying type acid mist removing device and method thereof

Abstract

The invention provides a laboratory spraying type acid mist removal device and a method thereof, and relates to the technical field of laboratory acid mist removal. The spraying type acid mist removing device for the laboratory comprises a shell, a condensation mechanism is arranged on the inner side of the shell and used for cooling acid mist, and the end face of the condensation mechanism is communicated with an adsorption assembly. According to the spraying type acid mist removal device and method for the laboratory, through the S-shaped condensation pipeline array design of the condensation mechanism and a circulating cooling liquid system, acid mist is rapidly cooled and macromolecular acid liquid drops are condensed by utilizing an anti-corrosion coating on the surface of the pipeline and a dense contact area, and part of acidic substances are separated in advance; the treatment load of the subsequent spraying neutralization link is reduced, the collection box recycles the condensate in a centralized manner, the acidic liquid is prevented from directly dripping to corrode equipment, the effect of removing acidic large-particle water mist is achieved, and the problems that macromolecular acidic liquid drops directly enter the spraying link, so that the consumption of the neutralization solution is too fast, and the acid removal efficiency is low are solved.

Description

Technical Field

[0001] This invention relates to the field of laboratory acid mist removal technology, specifically to a laboratory spray-type acid mist removal device and method. Background Technology

[0002] During sample testing and chemical reaction experiments in the laboratory, a large amount of acidic mist is often generated. This acidic mist is highly corrosive and irritating. If it is released directly, it will not only damage the respiratory tract, skin and other parts of the human body of the laboratory personnel, but also corrode hardware facilities such as laboratory benches and instruments. Long-term accumulation will also pollute the surrounding environment of the laboratory.

[0003] A search revealed Chinese patent CN118022456B, which discloses a spray-type acid mist removal device for power plants. The device includes a base to which an acid removal tank is fixedly attached. A servo motor is fixedly attached to the acid removal tank, and the output shaft of the servo motor is fixedly connected to a rotating shaft rotatably connected to the acid removal tank. An air inlet pipe is fixedly attached to the bottom of the acid removal tank. An inner shell, communicating with the air inlet pipe, is fixedly attached inside the acid removal tank. A filter cartridge is rotatably connected and communicates with the top of the inner shell. The rotating shaft is fixedly connected to the filter cartridge, and a fan located inside the filter cartridge is fixedly attached to the rotating shaft. A spray assembly and a placement assembly are also provided inside the acid removal tank. The fan rotation generates centrifugal force, which throws the exhaust gas from the filter cartridge outwards, increasing the initial velocity of the exhaust gas entering the acid removal tank and causing the exhaust gas to diffuse evenly to the bottom of the tank under the influence of centrifugal force.

[0004] Existing acid mist removal devices have many shortcomings: they lack an acid mist pretreatment stage, allowing large acidic droplets to directly enter the spraying stage, resulting in rapid consumption of the neutralization solution and low acid removal efficiency; the spraying method is mostly unidirectional, leading to insufficient contact between acid mist and neutralization solution and the creation of neutralization dead zones; the neutralized solution is not recycled, resulting in direct emission and resource waste; and the exhaust gas emissions lack real-time detection and recirculation remedial measures, making it easy for unqualified gases to be directly emitted, causing environmental pollution and equipment corrosion problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a laboratory spray-type acid mist removal device and method, which solves the problems mentioned in the background section.

[0006] 1. To achieve the above objectives, the present invention provides the following technical solution: a laboratory spray-type acid mist removal device, comprising a housing, a condensation mechanism disposed on the inner side of the housing for cooling acid mist, an adsorption component connected to the end face of the condensation mechanism, a spray chamber connected to the end of the condensation mechanism away from the adsorption component, a counter-spraying mechanism disposed on the inner side of the spray chamber, a storage chamber connected to the outer side of the counter-spraying mechanism, the storage chamber being fixed on the inner side of the housing, a neutralization mechanism disposed on the inner side of the housing, an input end of the neutralization mechanism connected to the spray chamber, an output end of the neutralization mechanism connected to the storage chamber, and the neutralization mechanism being used to neutralize the solution input from the spray chamber;

[0007] The spray chamber is connected to a discharge mechanism at its end face, and a return pipe is provided at the upper end of the discharge mechanism. The return pipe is connected to the adsorption component.

[0008] The upper end of the housing is equipped with a control unit, which is connected to the condensation mechanism, spray mechanism, neutralization mechanism and emission mechanism.

[0009] Preferably, the condensation mechanism includes a condensation shell, a cooling component, and a collection box. The end face of the condensation shell is connected to the adsorption component. The cooling component is disposed inside the condensation shell. The collection box is fixed and connected to the lower end of the condensation shell. An outlet is provided at the lower end of the collection box.

[0010] Preferably, the cooling assembly includes a condenser pipe and a heat sink. The condenser pipe is an S-shaped bend, and the condenser pipes are arranged in an array with their two ends interconnected by pipes. The surface of the condenser pipe is provided with an anti-corrosion coating. The two ends of the condenser pipe are divided into an input pipe and an output pipe, both of which are connected to the heat sink. Heat sink fins are provided on the outside of the heat sink, and a return channel is provided on the inside of the heat sink. One end of the return channel is connected to the output end of the condenser pipe, and the other end is connected to the input end of the condenser pipe through a pump body.

[0011] Preferably, the adsorption assembly includes a cover shell and an adsorption shell, the cover shell is connected to the condensation shell, and the adsorption shell and the cover shell are connected by a corrugated pipe. The adsorption shell is used to move and change the position of acid mist intake, and a filter screen is provided on the inner side of the adsorption shell.

[0012] Preferably, the spray chamber is a square hollow shell, with through holes at both ends of the upper half of the spray chamber. One through hole is connected to the condensation shell, and the other through hole is connected to the discharge mechanism. The lower half of the spray chamber is a solution pool.

[0013] Preferably, the opposing spraying mechanism includes an upper spraying mechanism and a lower spraying mechanism. The upper spraying mechanism is used to spray the solution downward from above the spraying chamber, and the lower spraying mechanism is used to spray the solution upward from below the spraying chamber.

[0014] The upper spraying mechanism is located above the spraying chamber. The upper spraying mechanism includes an upper connecting pipe and an upper nozzle group. The upper nozzle group is located at the upper end of the inner side of the spraying chamber. The upper nozzle group is connected to the upper connecting pipe. The input end of the upper connecting pipe is connected to the pump body inside the storage chamber.

[0015] The lower-level spraying mechanism includes a lower-level connecting pipe and a lower-level nozzle group. The lower-level connecting pipe is located at the lower end of the spraying chamber, and the lower-level nozzle group is located above the solution pool of the spraying chamber. One end of the lower-level connecting pipe is connected to the lower-level nozzle group, and the other end is connected to the pump body inside the storage chamber.

[0016] The spray ends of the upper spray mechanism and the lower spray mechanism are located at the upper and lower ends of the spray chamber through hole, respectively, and the spray ends of the upper spray mechanism and the lower spray mechanism are staggered.

[0017] Preferably, the neutralization mechanism includes a mixing cylinder, an input component, a stirring mechanism, and a dispensing cylinder. The mixing cylinder is a cylindrical shell with a discharge valve on its end face. The input component is connected to the surface of the mixing cylinder. The input end of the input component is connected to a pump body and is located inside the spray chamber. The stirring mechanism is rotatably located inside the mixing cylinder. A pH meter is installed inside the mixing cylinder and connected to a control unit. The dispensing cylinder is connected to the top of the mixing cylinder. The mixing cylinder is connected to a storage chamber through a pipe.

[0018] Preferably, the discharge mechanism includes a discharge pipe, discharge fan blades, and an upward discharge pipe. The input end of the discharge pipe is connected to the spray chamber, the discharge fan blades are arranged inside the discharge pipe, and the end of the discharge pipe away from the spray chamber is inclined and connected to the upward discharge pipe.

[0019] Preferably, an exhaust gas detection mechanism is provided inside the upward exhaust pipe, the upward exhaust pipe is connected to the return pipe, and a control column is rotatably provided on the inner side of the upper end of the upward exhaust pipe. The control column is cylindrical and has a long strip hole that runs through it from top to bottom on its outer surface.

[0020] A laboratory spray-type acid mist removal method includes the following steps:

[0021] S1: First, the motor is started by the control unit to drive the exhaust fan blades to rotate, so that the adsorption component generates suction. The acid mist is collected by moving the adsorption component and enters the condensation shell.

[0022] S2: The pump inside the heat sink is started by the control unit, so that the coolant inside the cooling component circulates along the condensation pipe and return channel and completes heat dissipation. When the acid mist passes through the condensation pipe, the temperature drops, causing the large molecular droplets in the acid mist to condense and drip down the condensation pipe to the collection box below for collection.

[0023] S3: Untreated acid mist enters the spray chamber. The pump delivers the alkaline solution stored in the storage chamber to the upper and lower spray mechanisms, so that the upper and lower nozzle groups form a water curtain of opposing sprays, allowing the acid mist to come into contact with the alkaline water mist for neutralization.

[0024] S4: The sprayed solution enters the lower end of the spray chamber and is drawn into the mixing tank through the input component. The pH meter transmits the data from the inside of the mixing tank to the control unit. When the solution is acidic, an alkaline solution is added to the inside of the delivery cylinder and the motor is started to drive the stirring mechanism to rotate, so that the solution in the mixing tank can be mixed evenly. The solution in the mixing tank is transported to the storage tank through the pump to realize the recycling of the solution. When the solution needs to be replaced, it is discharged from the discharge valve of the mixing tank.

[0025] S5: The airflow neutralized by the spray chamber is pushed into the upward exhaust pipe by the exhaust fan blades. After passing the test by the exhaust gas detection mechanism inside the upward exhaust pipe, the airflow is discharged from the top of the upward exhaust pipe. If it fails the test, the control unit controls the motor to drive the control column to rotate and close the upward exhaust pipe. The airflow then enters the return pipe and re-enters the condenser shell.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. This laboratory spray-type acid mist removal device and method utilizes an S-shaped condensation pipe array design and a circulating coolant system. By leveraging the anti-corrosion coating on the pipe surface and the dense contact area, it rapidly cools the acid mist and condenses large-molecule acidic droplets, pre-separating some acidic substances and reducing the processing load of subsequent spray neutralization stages. The collection box centrally recovers the condensate, preventing acidic liquid from directly dripping and corroding the equipment. This achieves the effect of removing large-particle acidic water mist and solves the problem of large-molecule acidic droplets directly entering the spray stage, leading to excessively rapid consumption of neutralization solution and low acid removal efficiency.

[0028] 2. The laboratory spray-type acid mist removal device and method, through the design of the upper and lower spray mechanisms spraying in opposite directions, makes the nozzles staggered to form a dense water curtain. The fine droplets generated by the atomizing nozzles form a counter-convective contact with the acid mist, which greatly increases the reaction area and contact time between the acid mist and the alkaline solution, completely eliminates the neutralization dead zone, significantly improves the thoroughness and efficiency of acid mist neutralization, and solves the problem of insufficient contact between acid mist and neutralization solution, which easily leads to neutralization dead zones.

[0029] 3. The laboratory spray-type acid mist removal device and method uses a pH meter in the neutralization mechanism to monitor the acidity and alkalinity of the solution in real time. The control unit automatically adjusts the amount of alkaline neutralizing agent added to the dosing cylinder. Combined with the efficient mixing action of the spiral stirring mechanism, it ensures that the solution is quickly neutralized to the required standard. The neutralized solution is returned to the storage tank through pipeline for recycling, which saves alkaline solution resources and reduces operating costs. The discharge valve can periodically discharge deteriorated solution to ensure the neutralization effect of the circulating solution. This solves the problem of resource waste caused by direct discharge of neutralized solution without recycling treatment mechanism.

[0030] 4. This laboratory spray-type acid mist removal device and method monitors the treated exhaust gas in real time through the exhaust gas detection mechanism of the emission system. Combined with the rapid on / off design of the return pipeline and control column, unqualified exhaust gas can be immediately returned to the condensation mechanism for reprocessing, avoiding environmental pollution. The control unit realizes the full-process automated control of condensation, spraying, neutralization and emission. At the same time, through the feedback of data from various sensors, the stability and reliability of the device operation are ensured. It is suitable for various laboratory acid mist treatment scenarios, solving the problem of lack of real-time detection and return remedial measures for exhaust gas emission, and the environmental pollution problem caused by the direct emission of unqualified gas. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall external structure of the present invention;

[0032] Figure 2 This is a schematic diagram showing the overall structural location of the present invention;

[0033] Figure 3 This is a schematic diagram of the enclosure shell structure of the present invention;

[0034] Figure 4 This is a schematic diagram of the condenser pipe structure of the present invention;

[0035] Figure 5 This is a schematic diagram of the spray chamber structure of the present invention;

[0036] Figure 6 This is a schematic diagram of the storage warehouse structure of the present invention;

[0037] Figure 7 This is a schematic diagram of the stirring mechanism of the present invention;

[0038] Figure 8 This is a schematic diagram of the external structure of the neutralization mechanism in this invention;

[0039] Figure 9 This is a schematic diagram of the upward discharge pipe structure of the present invention.

[0040] In the diagram: 1. Shell; 2. Condensation mechanism; 21. Condensation shell; 22. Cooling assembly; 221. Condensation pipe; 222. Heat dissipation box; 2221. Return channel; 23. Collection box; 3. Adsorption assembly; 31. Enclosure shell; 32. Adsorption shell; 4. Spray chamber; 5. Opposing spray mechanism; 51. Upper spray mechanism; 511. Upper connecting pipe; 512. Upper nozzle assembly; 52. Lower spray mechanism; 521. Lower connecting pipe; 522. Lower nozzle assembly; 6. Storage chamber; 7. Neutralization mechanism; 71. Mixing cylinder; 711. Discharge valve; 72. Input assembly; 73. Stirring mechanism; 74. Dispensing cylinder; 8. Discharge mechanism; 9. Return pipe; 81. Discharge pipe; 82. Discharge fan blade; 83. Upward discharge pipe; 831. Control column; 10. Control unit. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0042] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0045] like Figure 1-9 As shown, a laboratory spray-type acid mist removal device and method includes a housing 1, a condensation mechanism 2 disposed inside the housing 1 for cooling acid mist, an adsorption component 3 connected to the end face of the condensation mechanism 2, a spray chamber 4 connected to the end of the condensation mechanism 2 away from the adsorption component 3, a counter-spraying mechanism 5 disposed inside the spray chamber 4, a storage chamber 6 connected to the outside of the counter-spraying mechanism 5, the storage chamber 6 being fixed inside the housing 1, a neutralization mechanism 7 disposed inside the housing 1, the input end of the neutralization mechanism 7 being connected to the spray chamber 4, the output end of the neutralization mechanism 7 being connected to the storage chamber 6, the neutralization mechanism 7 being used to neutralize the solution input from the spray chamber 4, a discharge mechanism 8 connected to the end face of the spray chamber 4, a return pipe 9 disposed at the upper end of the discharge mechanism 8, the return pipe 9 being connected to the adsorption component 3, a control unit 10 disposed at the upper end of the housing 1, the control unit 10 being connected to the condensation mechanism 2, the counter-spraying mechanism 5, the neutralization mechanism 7 and the discharge mechanism 8 for control.

[0046] In this embodiment, acid mist is collected by adsorption component 3, pre-treated by condensation mechanism 2 to condense large molecular droplets, and then neutralized by alkaline solution sprayed by opposing spray mechanism 5. The neutralized solution is recycled after being treated by neutralization mechanism 7. The exhaust gas is discharged after passing the test, and if it fails the test, it is returned for re-treatment, thereby achieving a highly efficient and environmentally friendly acid mist elimination effect.

[0047] In an optional embodiment, the condensation mechanism 2 includes a condensation shell 21, a cooling component 22, and a collection box 23. The end face of the condensation shell 21 is connected to the adsorption component 3. The cooling component 22 is disposed inside the condensation shell 21. The collection box 23 is fixed and connected to the lower end of the condensation shell 21. The lower end of the collection box 23 is provided with a discharge port.

[0048] In this embodiment, the condenser shell 21 is made of transparent acrylic material, which makes it easy to observe the acid mist condensation; the outlet of the collection box 23 is equipped with a valve to control the discharge speed of the condensate.

[0049] In an optional embodiment, the cooling assembly 22 includes a condensing pipe 221 and a heat sink 222. The condensing pipe 221 is an S-shaped pipe, and the condensing pipes 221 are arranged in an array with their two ends connected to each other. The surface of the condensing pipe 221 is coated with a polytetrafluoroethylene anti-corrosion coating. The two ends of the condensing pipe 221 are divided into an input pipe and an output pipe, both of which are connected to the heat sink 222. The heat sink 222 is provided with heat sink fins on the outside and a return channel 2221 is provided on the inside of the heat sink 222. One end of the return channel 2221 is connected to the output end of the condensing pipe 221, and the other end is connected to the input end of the condensing pipe 221 through a pump body.

[0050] In this embodiment, several groups of condensation pipes 221 are arranged in an array to ensure that the acid mist is in full contact with the pipes; the heat sink 222 has an aluminum corrugated structure for heat dissipation, which has high heat dissipation efficiency, and a pump body is provided to ensure smooth circulation of coolant.

[0051] In an optional embodiment, the adsorption assembly 3 includes a cover shell 31 and an adsorption shell 32. The cover shell 31 is connected to the condensation shell 21, and the adsorption shell 32 is connected to the cover shell 31 through a corrugated pipe. The adsorption shell 32 is used to move and change the position of acid mist intake, and a filter screen is provided on the inner side of the adsorption shell 32.

[0052] In this embodiment, the corrugated pipe is made of corrosion-resistant rubber to meet the acid mist collection requirements at different locations; the filter screen inside the adsorption shell 32 can filter impurities and ensure the acid mist intake efficiency.

[0053] In an optional embodiment, the spray chamber 4 is a square shell. Both ends of the upper part of the spray chamber 4 are provided with through holes. One through hole is connected to the condensation shell 21, and the other through hole is connected to the discharge mechanism 8. The lower part of the spray chamber 4 is a solution pool.

[0054] In this embodiment, a solution pool is provided in the lower half of the spray chamber 4 so that the sprayed solution can be collected and the scattered solution can be centrally processed.

[0055] In an optional embodiment, the opposing spray mechanism 5 includes an upper spray mechanism 51 and a lower spray mechanism 52. The upper spray mechanism 51 sprays solution downward from above the spray chamber 4, and the lower spray mechanism 52 sprays solution upward from below the spray chamber 4. The upper spray mechanism 51 is disposed above the spray chamber 4 and includes an upper connecting pipe 511 and an upper nozzle assembly 512. The upper nozzle assembly 512 is disposed at the upper end of the inner side of the spray chamber 4 and is connected to the upper connecting pipe 511. The input end is connected to the pump body inside the storage tank 6. The lower spray mechanism 52 includes a lower connecting pipe 521 and a lower nozzle group 522. The lower connecting pipe 521 is located at the lower end of the spray tank 4, and the lower nozzle group 522 is located above the solution pool of the spray tank 4. One end of the lower connecting pipe 521 is connected to the lower nozzle group 522, and the other end is connected to the pump body inside the storage tank 6. The spray ends of the upper spray mechanism 51 and the lower spray mechanism 52 are located at the upper and lower ends of the through hole position of the spray tank 4, respectively, and the spray ends of the upper spray mechanism 51 and the lower spray mechanism 52 are staggered.

[0056] In this embodiment, the upper spray mechanism 51 and the lower spray mechanism 52 are provided with several sets of nozzles that are staggered and evenly distributed at the upper and lower ends of the spray chamber 4 channel, so that the atomized solution can fully combine with the acid mist.

[0057] In an optional embodiment, the neutralization mechanism 7 includes a mixing cylinder 71, an input component 72, a stirring mechanism 73, and a dispensing cylinder 74. The mixing cylinder 71 is a cylindrical shell with a discharge valve 711 on its end face. The surface of the mixing cylinder 71 is connected to the input component 72, and the input end of the input component 72 is connected to a pump body and is located inside the spray chamber 4. The stirring mechanism 73 is rotatably located inside the mixing cylinder 71. A pH meter is located inside the mixing cylinder 71 and is connected to the control unit 10. The dispensing cylinder 74 is connected above the mixing cylinder 71, and the mixing cylinder 71 is connected to the storage chamber 6 through a pipe.

[0058] In this embodiment, the solution inside the mixing tank 71 is detected by a pH meter, and an alkaline neutralizing agent is promptly added to the inside of the mixing tank 71. The mixture is then uniformly mixed by the stirring mechanism 73, so that the acidic substances can be quickly neutralized and removed.

[0059] In an optional embodiment, an exhaust gas detection mechanism is provided inside the upward exhaust pipe 83. The upward exhaust pipe 83 is connected to the return pipe 9. A control column 831 is rotatably provided on the inner side of the upper end of the upward exhaust pipe 83. The control column 831 is cylindrical and has a long strip hole that runs through it from top to bottom on its outer surface.

[0060] A laboratory spray-type acid mist removal method includes the following steps:

[0061] S1: First, the motor is started by the control unit 10 to drive the exhaust fan blades 82 to rotate, so that the adsorption component 3 generates suction. The acid mist is collected by moving the adsorption component 3 and enters the condensation shell 21.

[0062] S2: The pump inside the heat sink 222 is started by the control unit 10, so that the coolant inside the cooling component 22 circulates along the condensation pipe 221 and the return channel 2221 and completes heat dissipation. When the acid mist passes through the condensation pipe 221, the temperature drops, causing the large molecular droplets in the acid mist to condense and drip down along the condensation pipe 221 to the collection box 23 below for collection.

[0063] S3: Untreated acid mist enters the spray chamber 4. The pump transports the alkaline solution stored in the storage chamber 6 to the upper spray mechanism 51 and the lower spray mechanism 52, so that the upper nozzle group 512 and the lower nozzle group 522 form a water curtain of opposing sprays, so that the acid mist comes into contact with the alkaline water mist for neutralization.

[0064] S4: The sprayed solution enters the lower end of the spray chamber 4 and is drawn into the mixing cylinder 71 through the input component 72. The pH detector transmits the data inside the mixing cylinder 71 to the control unit 10. After the solution becomes acidic, an alkaline solution is added to the inside of the delivery cylinder 74 and the motor is started to drive the stirring mechanism 73 to rotate, so that the solution in the mixing cylinder 71 can be mixed evenly. The solution in the mixing cylinder 71 is transported to the storage chamber 6 through the pump to realize the recycling of the solution. When the solution needs to be replaced, it is discharged from the discharge valve 711 of the mixing cylinder 71.

[0065] S5: The airflow neutralized by the spray chamber 4 is pushed into the upward discharge pipe 83 by the exhaust fan blade 82. After passing the test of the exhaust gas detection mechanism inside the upward discharge pipe 83, the airflow is discharged from the upper end of the upward discharge pipe 83. If it fails the test, the control unit 10 controls the motor to drive the control column 831 to rotate and close the upward discharge pipe 83. The airflow enters the return pipe 9 and then re-enters the condenser shell 21.

[0066] In this embodiment, the exhaust gas detection mechanism is an acid gas sensor; the diameter of the control column 831 is adapted to the inner diameter of the upward exhaust pipe 83, which can quickly realize the switching of the pipeline on and off, and ensure that the unqualified exhaust gas flows back smoothly.

[0067] When in use, first place the adsorption shell 32 near the area where acid mist is generated in the laboratory, so that the horn-shaped suction inlet is aimed at the source of acid mist. Set the relevant parameters on the touch screen of the control unit 10. After the device is started, the exhaust fan blade 82 rotates to generate suction. The acid mist enters the condensation shell 21 after being filtered by the filter screen of the adsorption shell 32. The coolant in the cooling component 22 circulates, causing the large molecular droplets in the acid mist to condense and drip into the collection box 23. The uncondensed acid mist enters the spray chamber 4. The upper spray mechanism 51 and the lower spray mechanism 52 start at the same time, spraying atomized alkaline solution to form a counter-current water curtain. After the acid mist and alkaline solution are fully neutralized, the solution flows into the solution pool at the lower end of the spray chamber 4. After filtration, it is sent from the input component 72 to the mixing cylinder 71.

[0068] The pH meter in the mixing tank 71 monitors the acidity and alkalinity of the solution in real time. If the solution is acidic, the control unit 10 controls the dispensing cylinder 74 to add alkaline neutralizing agent. The stirring mechanism 73 rotates and stirs to mix the solution evenly until it reaches the slightly alkaline range. Then the solution is sent back to the storage tank 6 for recycling.

[0069] The neutralized airflow enters the upward discharge pipe 83 and is tested by the exhaust gas testing agency. If it passes the test, it is discharged directly; otherwise, it re-enters the condensate shell 21 through the return pipe 9 for further treatment. During use, the operator can view the device's operating status in real time through the touch screen of the control unit 10, periodically clean the condensate in the collection tank 23, and replenish the solution in the storage chamber 6 and the alkaline neutralizing agent in the dosing cylinder 74.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0071] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0072] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laboratory spray-type acid mist removal device, comprising a housing (1), characterized in that: A condensing mechanism (2) is provided inside the shell (1). The condensing mechanism (2) is used to cool acid mist. An adsorption component (3) is connected to the end face of the condensing mechanism (2). A spray chamber (4) is connected to the end of the condensing mechanism (2) away from the adsorption component (3). A counter-spraying mechanism (5) is provided inside the spray chamber (4). A storage chamber (6) is connected to the outside of the counter-spraying mechanism (5). The storage chamber (6) is fixed inside the shell (1). A neutralization mechanism (7) is provided inside the shell (1). The input end of the neutralization mechanism (7) is connected to the spray chamber (4). The output end of the neutralization mechanism (7) is connected to the storage chamber (6). The neutralization mechanism (7) is used to neutralize the solution input from the spray chamber (4). The spray chamber (4) is connected to a discharge mechanism (8) at one end. A return pipe (9) is provided at the upper end of the discharge mechanism (8). The return pipe (9) is connected to the adsorption component (3). The upper end of the housing (1) is provided with a control unit (10), which is connected to the condensation mechanism (2), the spray mechanism (5), the neutralization mechanism (7) and the discharge mechanism (8).

2. The laboratory spray-type acid mist removal device according to claim 1, characterized in that: The condensation mechanism (2) includes a condensation shell (21), a cooling component (22) and a collection box (23). The end face of the condensation shell (21) is connected to the adsorption component (3). The cooling component (22) is located inside the condensation shell (21). The collection box (23) is fixed and connected to the lower end of the condensation shell (21). The lower end of the collection box (23) is provided with an outlet.

3. The laboratory spray-type acid mist removal device according to claim 2, characterized in that: The cooling assembly (22) includes a condensing pipe (221) and a heat sink (222). The condensing pipe (221) is an S-shaped pipe. The condensing pipes (221) are arranged in an array and their two ends are connected to each other through pipes. The surface of the condensing pipe (221) is provided with an anti-corrosion coating. The pipes at both ends of the condensing pipe (221) are divided into an input pipe and an output pipe, both of which are connected to the heat sink (222). Heat sink fins are provided on the outside of the heat sink (222). A return channel (2221) is provided on the inside of the heat sink (222). One end of the return channel (2221) is connected to the output end of the condensing pipe (221), and the other end is connected to the input end of the condensing pipe (221) through a pump body.

4. A laboratory spray-type acid mist removal device according to claim 2, characterized in that: The adsorption assembly (3) includes a cover shell (31) and an adsorption shell (32). The cover shell (31) is connected to the condensation shell (21). The adsorption shell (32) is connected to the cover shell (31) through a corrugated pipe. The adsorption shell (32) is used to move and change the position of acid mist intake. A filter screen is provided on the inner side of the adsorption shell (32).

5. A laboratory spray-type acid mist removal device according to claim 2, characterized in that: The spray chamber (4) is a square shell. Both ends of the upper part of the spray chamber (4) are provided with through holes. One end of the through hole is connected to the condensation shell (21), and the other end of the through hole is connected to the discharge mechanism (8). The lower part of the spray chamber (4) is a solution pool.

6. A laboratory spray-type acid mist removal device according to claim 5, characterized in that: The opposing spraying mechanism (5) includes an upper spraying mechanism (51) and a lower spraying mechanism (52). The upper spraying mechanism (51) is used to spray the solution downward from above the spraying chamber (4), and the lower spraying mechanism (52) is used to spray the solution upward from below the spraying chamber (4). The upper spraying mechanism (51) is located above the spraying chamber (4). The upper spraying mechanism (51) includes an upper connecting pipe (511) and an upper nozzle group (512). The upper nozzle group (512) is located at the upper end of the inner side of the spraying chamber (4). The upper nozzle group (512) is connected to the upper connecting pipe (511). The input end of the upper connecting pipe (511) is connected to the pump body inside the storage chamber (6). The lower spraying mechanism (52) includes a lower connecting pipe (521) and a lower nozzle group (522). The lower connecting pipe (521) is located at the lower end of the spray chamber (4), and the lower nozzle group (522) is located above the solution pool of the spray chamber (4). One end of the lower connecting pipe (521) is connected to the lower nozzle group (522), and the other end is connected to the pump body inside the storage tank (6). The spray ends of the upper spray mechanism (51) and the lower spray mechanism (52) are located at the upper and lower ends of the through hole of the spray chamber (4), respectively, and the spray ends of the upper spray mechanism (51) and the lower spray mechanism (52) are staggered.

7. A laboratory spray-type acid mist removal device according to claim 1, characterized in that: The neutralization mechanism (7) includes a mixing cylinder (71), an input component (72), a stirring mechanism (73), and a dispensing cylinder (74). The mixing cylinder (71) is a cylindrical shell. A discharge valve (711) is provided on the end face of the mixing cylinder (71). The surface of the mixing cylinder (71) is connected to the input component (72). The input end of the input component (72) is connected to a pump body and the input end is located inside the spray chamber (4). The stirring mechanism (73) is rotatably located inside the mixing cylinder (71). A pH detector is provided inside the mixing cylinder (71) and connected to the control unit (10). The dispensing cylinder (74) is connected above the mixing cylinder (71). The mixing cylinder (71) is connected to the storage chamber (6) through a pipe.

8. A laboratory spray-type acid mist removal device according to claim 1, characterized in that: The discharge mechanism (8) includes a discharge pipe (81), a discharge fan blade (82), and an upward discharge pipe (83). The input end of the discharge pipe (81) is connected to the spray chamber (4), the discharge fan blade (82) is located inside the discharge pipe (81), and the end of the discharge pipe (81) away from the spray chamber (4) is inclined and connected to the upward discharge pipe (81).

9. A laboratory spray-type acid mist removal device according to claim 8, characterized in that: The exhaust pipe (83) is equipped with an exhaust gas detection mechanism on its inner side. The exhaust pipe (83) is connected to the return pipe (9). A control column (831) is rotatably installed on the inner side of the upper end of the exhaust pipe (83). The control column (831) is cylindrical and has a long strip hole that runs through it from top to bottom on its outer surface.

10. A laboratory spray-type acid mist removal method, utilizing the laboratory spray-type acid mist removal device according to any one of claims 1-9, comprising the following steps: S1: First, the motor is started by the control unit (10) to drive the exhaust fan blades (82) to rotate, so that the adsorption component (3) generates suction. The acid mist is collected by moving the adsorption component (3) and the acid mist enters the condensation shell (21). S2: The pump body inside the heat sink (222) is started by the control unit (10), so that the coolant inside the cooling component (22) circulates along the condenser pipe (221) and the return channel (2221) and completes heat dissipation. When the acid mist passes through the condenser pipe (221), the temperature decreases, causing the large molecular droplets in the acid mist to condense and drip down along the condenser pipe (221) to the collection box (23) below for collection. S3: Untreated acid mist enters the spray chamber (4), and the pump delivers the alkaline solution stored in the storage chamber (6) to the upper spray mechanism (51) and the lower spray mechanism (52), so that the upper nozzle group (512) and the lower nozzle group (522) form a water curtain of opposing sprays, so that the acid mist comes into contact with the alkaline water mist for neutralization. S4: The sprayed solution enters the lower end of the spray chamber (4) and is drawn into the mixing cylinder (71) through the input component (72). The pH detector transmits the data inside the mixing cylinder (71) to the control unit (10). After the solution becomes acidic, an alkaline solution is added to the inside of the delivery cylinder (74) and the motor is started to drive the stirring mechanism (73) to rotate, so that the solution in the mixing cylinder (71) can be mixed evenly. The solution in the mixing cylinder (71) is transported to the storage tank (6) through the pump body to realize the recycling of the solution. When the solution needs to be replaced, it is discharged from the discharge valve (711) of the mixing cylinder (71). S5: The airflow after being neutralized by the spray chamber (4) is pushed into the upward discharge pipe (83) by the exhaust fan blade (82). After passing the test of the exhaust gas detection mechanism inside the upward discharge pipe (83), the airflow is discharged from the upper end of the upward discharge pipe (83). If it fails the test, the control unit (10) controls the motor to drive the control column (831) to rotate and close the upward discharge pipe (83). The airflow enters the return pipe (9) and then re-enters the condenser shell (21).

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