Ethylene oxide sterilizer exhaust treatment device and method for paper plastic bags

Abstract

This invention relates to the field of sterilization waste gas treatment technology in paper-plastic bag production, specifically disclosing a waste gas treatment device and method for an ethylene oxide sterilizer used in paper-plastic bag production. The device includes a base, a support frame fixedly installed at the top center of the base, a main treatment mechanism fixedly installed on the inner side of the support frame, and a fixing frame fixedly installed in a ring arrangement on the outer side of the top of the base. A secondary treatment mechanism is fixedly installed on the top of the fixing frame. The bottom output end of the main treatment mechanism is connected to the bottom of the secondary treatment mechanism. After the main treatment is completed, the waste gas enters the secondary treatment tank. A liquid pump is started, and the solution forms a water mist through the spray nozzles of the ring pipe for further waste gas treatment. When changing the solution, a bidirectional water pump and a solenoid valve cooperate to transfer the solution and discharge the waste liquid. The three sets of secondary treatment tanks work together: one discharges waste liquid, one supplies solution, and one treats waste gas, ensuring continuous treatment and greatly improving waste gas treatment efficiency.

Description

Technical Field

[0001] This invention relates to the field of sterilization waste gas treatment technology in paper-plastic bag production, and in particular to a waste gas treatment device and method for ethylene oxide sterilizers used in paper-plastic bag production. Background Technology

[0002] An ethylene oxide sterilizer for paper-plastic bags is a device specifically designed for sterilizing items packaged in paper-plastic bags. Ethylene oxide is a highly efficient sterilizing agent that can effectively kill various microorganisms, including bacterial spores. The working principle of the ethylene oxide sterilizer is to place the paper-plastic bags containing the items to be sterilized into the sealed chamber of the sterilizer, then inject a certain amount of ethylene oxide gas, and control conditions such as temperature, humidity, and pressure to allow the ethylene oxide gas to fully penetrate into the interior of the paper-plastic bags and interact with the microorganisms, thereby achieving the purpose of sterilization.

[0003] Ethylene oxide is a toxic, flammable, and explosive gas. If ethylene oxide leaks during sterilization, it can harm human health and the environment. Short-term exposure to high concentrations of ethylene oxide may cause symptoms such as headache, nausea, and vomiting. Long-term exposure can cause significant harm to the human body. Furthermore, if residual ethylene oxide on items is not fully released and discharged after sterilization, the residual ethylene oxide may also have adverse effects on the human body when these items are used. Therefore, waste gas treatment devices are usually required to treat the waste gas during application.

[0004] Chinese patent CN116785910A discloses an ethylene oxide sterilizer exhaust gas treatment system and method, which includes a collection box, a primary treatment tank on one side above the collection box, and a secondary treatment tank on the other side above the collection box. The lower ends of the secondary treatment tank and the primary treatment tank are fixedly connected to the collection box by support legs. The lower end of the primary treatment tank away from the secondary treatment tank has an air inlet, and a pressure pump is installed on the air inlet. A gate valve body is connected to the output pipe of the pressure pump. The present invention can treat the exhaust gas introduced during operation by setting the primary treatment tank. By setting the intermittently opening conical sealing plate and gate valve plate, intermittent air intake and exhaust can be carried out during operation, which can effectively increase the contact time between the gas and the liquid in the primary treatment tank, increase the reaction time of ethylene oxide and water, and make the reaction more complete.

[0005] While the aforementioned device exhibits certain processing capabilities during practical application, it has revealed several problems. Regarding the processing tank, its internal stirring structure is quite simple, failing to achieve efficient staggered stirring in specific application scenarios. Its stirring mechanism merely involves the interaction of a rotating shaft and fan blades, which is insufficient to break up air bubbles into smaller ones. This results in a very limited overall contact area between air and solution. Furthermore, after the exhaust gas rises, there is no function to re-introduce air, preventing rapid circulation and treatment of the exhaust gas during operation. Additionally, the exhaust gas treatment device relies solely on a single processing tank. When the concentration in the tank reaches its upper limit, the solution must be drained, the water replaced, and treatment resumes. This results in periods of downtime, negatively impacting processing efficiency. Therefore, this device has certain shortcomings and requires improvement. Summary of the Invention

[0006] The purpose of this invention is to provide a device and method for treating exhaust gas from an ethylene oxide sterilizer for paper and plastic bags, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides an ethylene oxide sterilizer exhaust gas treatment device for paper and plastic bags, comprising a base, a support frame fixedly installed at the top center of the base, a main treatment mechanism fixedly installed on the inner side of the support frame, a fixing frame fixedly installed in a ring arrangement on the outer side of the top of the base, a secondary treatment mechanism fixedly installed on the top of the fixing frame, and the bottom output end of the main treatment mechanism and the bottom of the secondary treatment mechanism being connected.

[0008] The main treatment unit includes a main treatment tank, which is fixedly installed inside the support frame. A drive assembly is fixedly installed inside the main treatment tank, and a stirring assembly is fixedly installed at the bottom of the drive assembly. An aeration assembly is fixedly installed at the lower end of the main treatment tank, and a bidirectional water pump is fixedly installed at the bottom of the main treatment tank. A connecting pipe is fixedly installed at the output end of the bidirectional water pump, and the outer end of the connecting pipe is connected to the bottom of each auxiliary treatment unit. The input end of the bidirectional water pump is connected to the inside of the main treatment tank.

[0009] Furthermore, the drive assembly includes a main cover, which is fixedly installed on the top of the main treatment tank. A first motor is fixedly installed on the top of the main cover. An internal gear ring is fixedly installed through the output end of the first motor through the main cover. An external gear ring is rotatably connected to the bottom of the main cover. Two transmission gears are rotatably connected to one side of the bottom of the main cover. The two transmission gears are meshed with each other. One of the two transmission gears is meshed with the internal gear ring, and the other transmission gear is meshed with the external gear ring. An exhaust pipe is fixedly installed on one side of the top of the main cover.

[0010] Furthermore, the stirring assembly includes a main rotating shaft, which is fixedly installed at the bottom of the internal gear ring, and a first stirring mesh plate is fixedly installed at equal intervals on the outer surface of the main rotating shaft.

[0011] Furthermore, the stirring assembly also includes an outer rail, which is fixedly installed at the upper and lower ends inside the main processing tank. A slide is rotatably connected to the inner side of the outer rail. A second stirring mesh plate is fixedly installed at equal intervals at both the upper and lower ends inside the slide. A connecting rod is fixedly installed at equal intervals on the top of the slide. The top of the connecting rod is fixedly connected to the bottom of the outer toothed ring.

[0012] Furthermore, the aeration assembly includes an air pump, which is fixedly installed in the middle of one side of the main treatment tank. The input end of the air pump is connected to the upper interior of the main treatment tank. An outer ring pipe is fixedly installed at the bottom of the air pump. The input end of the outer ring pipe is connected to the output end of the air pump. Inclined pipes are fixedly installed at equal intervals at the top of the outer ring pipe. An inner ring pipe is fixedly installed through the end of the inclined pipe and penetrates the main treatment tank. The inner ring pipe is located at the bottom of the main treatment tank. Aeration pipes are fixedly installed at equal intervals at the top of the inner ring pipe.

[0013] Furthermore, aeration pipes are fixedly installed at equal intervals on the inner side of the aeration pipe, and all aeration pipes are inclined downwards towards the inward direction.

[0014] Furthermore, the secondary treatment mechanism includes secondary treatment tanks, all of which are fixedly installed on the top of the mounting frame. A stirring rack is movably installed inside each secondary treatment tank. A spraying mechanism is fixedly installed at the upper part of the interior of each secondary treatment tank. A solenoid valve is fixedly installed at the bottom of each secondary treatment tank, with its input end connected to the output end of each connecting pipe. A drain valve is fixedly installed on one side of the bottom of each secondary treatment tank. The drain valve at the bottom of the secondary treatment tank can be connected to an external water treatment pipeline. After the waste liquid is discharged, a new solution can be pumped to the top of the secondary treatment tank through the drain valve using an external pump. A supply pipeline can also be opened at the top of the secondary treatment tank to facilitate the addition of new solution. The methods for adding the solution are existing technologies and will not be elaborated here.

[0015] Furthermore, the stirring rack includes a secondary cover, which is fixedly installed on the top of the secondary treatment tank. A second motor is fixedly installed on the top of the secondary cover, and a secondary rotating shaft is fixedly installed through the output end of the second motor through the secondary cover. A stirring mesh frame is fixedly installed at equal intervals on the outer surface of the secondary rotating shaft. A solenoid valve is also fixedly installed at equal intervals on the upper outer side of the secondary treatment tank. An exhaust gas inlet pipe is fixedly installed on the outer end of the solenoid valve on the upper side of the secondary treatment tank. The input end of the exhaust gas inlet pipe is connected to the upper end of the main treatment tank. An exhaust gas discharge pipe is fixedly installed on one side of the top of the secondary cover. The exhaust gas discharge pipe can be connected to an external combustion chamber or other combustion equipment, through which the exhaust gas can be further treated.

[0016] Furthermore, the spraying mechanism includes a liquid pump, which is fixedly installed on the outer middle of the auxiliary treatment tank. The input end of the liquid pump is connected to the inner bottom of the auxiliary treatment tank, and the output end of the liquid pump is fixedly installed through the upper part of the inner side of the auxiliary treatment tank. Spray nozzles are fixedly installed at equal intervals on the inner side of the annular pipe.

[0017] A method for using an ethylene oxide sterilizer exhaust gas treatment device for paper-plastic bags includes the following steps:

[0018] Step 1: Connect the main treatment unit to the exhaust gas source. Use the exhaust gas pipe to connect this device to the exhaust gas discharge pipeline of the ethylene oxide sterilizer. The exhaust gas enters the main treatment tank through the exhaust gas pipe.

[0019] Step 2: The waste gas in the main treatment tank circulates and bubbles form. Start the air pump to draw the air from the upper part of the main treatment tank to the bottom outer ring pipe. The air is then discharged to the inner ring pipe through the outer ring pipe and the inclined pipe. With the help of the aeration pipe and aeration tube on the ring pipe, the waste gas is evenly formed into tiny bubbles and integrated into the main treatment tank. The air pump is continuously started to circulate the waste gas from the top of the tank to the bottom, promoting full contact between the waste gas and the treatment solution and improving the treatment effect.

[0020] Step 3: Stirring and bubble breaking in the main treatment tank. The stirring and driving components work together. The first motor drives the inner gear ring, main shaft and first stirring screen to rotate in the same direction. At the same time, the inner gear ring drives the outer gear ring through the transmission gear, so that the outer gear ring and the slide rotate in the opposite direction, which drives the second stirring screen to rotate in the opposite direction. The first stirring screen and the second stirring screen vigorously stir in opposite directions, breaking up the bubbles, so that the waste gas can contact the reaction solution more evenly, improving the reaction efficiency and waste gas treatment effect.

[0021] Step 4: The exhaust gas after the main treatment enters the auxiliary treatment tank. After the main treatment mechanism finishes its treatment, the solenoid valve at the top of the auxiliary treatment tank is opened, and the exhaust gas in the main treatment tank is discharged to the auxiliary treatment tank through the exhaust gas inlet pipe.

[0022] Step 5: Spraying and further treatment of the solution in the auxiliary treatment tank. Start the liquid pump to draw the solution in the auxiliary treatment tank into the ring pipe, and discharge it through the spray nozzle to form water mist, so that the mist solution reacts with the waste gas for a longer period of time, and further treats the waste gas.

[0023] Step Six: Solution Replacement and Continuous Operation of Sub-treatment Tanks. If the solution needs to be replaced during equipment use, turn on the bidirectional water pump and the corresponding solenoid valve to discharge the solution in the main treatment tank to the sub-treatment tank and discharge the waste liquid. The three sets of sub-treatment tanks work together: one group discharges waste liquid, one group supplies solution, and one group treats waste gas, ensuring that the equipment can continuously and uninterruptedly treat waste gas and improve treatment efficiency.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] Firstly, this invention includes a main treatment mechanism. The waste gas pipe is connected to the waste gas discharge pipe of the ethylene oxide sterilizer, through which the waste gas enters the main treatment tank. The air pump is started to draw the waste gas from the top of the tank to the bottom outer ring pipe, through the inclined pipe to the inner ring pipe, and then evenly discharged into the tank by the aeration pipe and aeration tube, forming micro bubbles. This cycle repeats, allowing the waste gas to be fully treated in the main treatment tank, improving the overall treatment effect, and ensuring that the waste gas and the treatment liquid are in full contact and react.

[0026] Secondly, in this invention, the stirring component and the driving component work together. When the first motor is started, the inner gear ring drives the main rotating shaft and the first stirring screen to rotate. At the same time, the inner gear ring causes the outer gear ring to rotate in the opposite direction through the transmission gear, thereby causing the second stirring screen to rotate in the opposite direction. The two components violently stir in opposite directions, breaking up the bubbles and making the waste gas contact the reaction solution more evenly, accelerating the reaction and improving the treatment effect and efficiency.

[0027] Thirdly, in this invention, a secondary treatment mechanism is provided. After the main treatment is completed, the waste gas enters the secondary treatment tank. The liquid pump is started, and the solution forms water mist through the spray nozzle of the ring pipe for further treatment of the waste gas. When the solution is replaced, the bidirectional water pump and the solenoid valve work together to transfer the solution and discharge the waste liquid. The three sets of secondary treatment tanks work together, one to discharge waste liquid, one to supply solution, and one to treat waste gas, ensuring continuous treatment and greatly improving the waste gas treatment efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure viewed from below in this invention;

[0030] Figure 3 This is a schematic diagram of the overall split-state structure in this invention;

[0031] Figure 4 This is a schematic diagram of the overall structure of the main processing tank in this invention;

[0032] Figure 5 This is a schematic diagram of the internal structure of the main processing tank and the stirring assembly in this invention;

[0033] Figure 6 This is a schematic diagram of the internal structure of the main processing tank in this invention;

[0034] Figure 7 This is a schematic diagram of the stirring component and driving component in this invention;

[0035] Figure 8 This is a schematic diagram of the separated state structure of the stirring component and the driving component in this invention;

[0036] Figure 9 This is a schematic diagram of the structure of the stirring rack in this invention.

[0037] In the diagram: 1. Base; 2. Support frame; 3. Main processing mechanism; 31. Main processing tank; 32. Drive assembly; 321. Main cover; 322. First motor; 323. Internal gear ring; 324. External gear ring; 325. Transmission gear; 33. Mixing assembly; 331. Main shaft; 332. First mixing screen; 333. Outer rail; 334. Slide; 335. Second mixing screen; 336. Connecting rod; 34. Aeration assembly; 341. Air pump; 342. Outer ring pipe; 343. Inclined... Pipe; 344, Inner ring pipe; 345, Aeration pipe; 346, Aeration pipe; 35, Two-way water pump; 36, Connecting pipe; 37, Exhaust gas pipe; 4, Fixing frame; 5, Secondary treatment mechanism; 51, Secondary treatment tank; 52, Stirring frame; 521, Secondary cover; 522, Secondary motor; 523, Secondary rotating shaft; 524, Stirring mesh frame; 525, Exhaust gas inlet pipe; 53, Spraying mechanism; 531, Liquid pump; 532, Ring pipe; 533, Spray nozzle; 54, Solenoid valve; 55, Drain valve. Detailed Implementation

[0038] Example

[0039] Please see Figures 1-9 In this embodiment of the invention, a method for using an ethylene oxide sterilizer exhaust gas treatment device for paper and plastic bags includes a base 1, a support frame 2 fixedly installed in the middle of the top of the base 1, a main treatment mechanism 3 fixedly installed on the inner side of the support frame 2, a fixing frame 4 fixedly installed in a ring arrangement on the outer side of the top of the base 1, a secondary treatment mechanism 5 fixedly installed on the top of the fixing frame 4, and the bottom output end of the main treatment mechanism 3 and the bottom of the secondary treatment mechanism 5 connected.

[0040] The main treatment unit 3 includes a main treatment tank 31, which is fixedly installed inside the support frame 2. A drive assembly 32 is fixedly installed inside the main treatment tank 31, and a stirring assembly 33 is fixedly installed at the bottom of the drive assembly 32. An aeration assembly 34 is fixedly installed at the lower end of the main treatment tank 31. A bidirectional water pump 35 is fixedly installed at the bottom of the main treatment tank 31, and a connecting pipe 36 is fixedly installed at the output end of the bidirectional water pump 35. The outer end of the connecting pipe 36 is connected to the bottom of each auxiliary treatment unit 5, and the input end of the bidirectional water pump 35 is connected to the interior of the main treatment tank 31. The support frame 2 at the top center of the base 1 stably supports the main treatment unit 3. The main treatment tank 31 inside is equipped with the drive assembly 32, the stirring assembly 33, and the aeration assembly 34. The system achieves efficient preliminary treatment of waste gas. The drive component 32 provides power to the stirring component 33, enabling it to stir fully and promote the contact and reaction between the waste gas and the treatment liquid. The aeration component 34 further improves the dispersion uniformity of the waste gas. The bidirectional water pump 35 at the bottom of the main treatment tank 31 is connected to the bottom of the annularly arranged auxiliary treatment mechanism 5 through the connecting pipe 36, realizing flexible transport of the solution. It can transport the solution from the main treatment tank 31 to the auxiliary treatment mechanism 5, and can also operate in reverse, ensuring the continuity and efficiency of the treatment process. This design makes the waste gas treatment more comprehensive and in-depth, improves the treatment efficiency and effect, reduces the treatment cost, enhances the stability and reliability of the device, and can better meet the needs of ethylene oxide sterilizer waste gas treatment.

[0041] Please see Figure 5-7The drive assembly 32 includes a main cover 321, which is fixedly mounted on the top of the main treatment tank 31. A first motor 322 is fixedly mounted on the top of the main cover 321. An internal gear ring 323 is fixedly mounted through the output end of the first motor 322 through the main cover 321. An external gear ring 324 is rotatably connected to the bottom of the main cover 321. Two transmission gears 325 are rotatably connected to one side of the bottom of the main cover 321. The two transmission gears 325 are meshed with each other. One of the two transmission gears 325 meshes with the internal gear ring 323, and the other transmission gear 325 meshes with the external gear ring 324. An exhaust pipe 37 is fixedly mounted on one side of the top of the main cover 321. The main cover 321 on the top of the main treatment tank 31 provides a stable mounting base, ensuring the stable operation of each component. The first motor 322 mounted on the main cover 321 provides the entire drive system with... A powerful and stable power source, the first motor 322, has its output end connected to the inner gear ring 323 through the main cover 321, enabling efficient power transmission. The outer gear ring 324 rotatably connected to the bottom of the main cover 321, along with two meshing transmission gears 325, forms an ingenious transmission structure. One transmission gear 325 meshes with the inner gear ring 323, and the other meshes with the outer gear ring 324. This design achieves reasonable power distribution and conversion, allowing the inner gear ring 323 and the outer gear ring 324 to rotate in different directions, thus providing diverse power modes for subsequent operations such as stirring. In addition, the exhaust pipe 37 fixedly installed on one side of the top of the main cover 321 ensures that the exhaust gas can smoothly enter the treatment system, providing an effective channel for the initial stage of the entire treatment process. This allows the exhaust gas to enter the treatment process in a timely and orderly manner, improving the working efficiency and treatment effect of the entire treatment device.

[0042] Please see Figure 3 , Figure 7 and Figure 8The stirring assembly 33 includes a main rotating shaft 331, which is fixedly installed at the bottom of an inner gear ring 323. First stirring screens 332 are fixedly installed at equal intervals on the outer surface of the main rotating shaft 331. The stirring assembly 33 also includes an outer rail 333, which is fixedly installed at both the upper and lower ends inside the main treatment tank 31. A slide 334 is rotatably connected to the inner side of the outer rail 333. Second stirring screens 335 are fixedly installed at equal intervals at both the upper and lower ends of the slide 334. Connecting rods 336 are fixedly installed at equal intervals on the top of the slide 334. The top of the connecting rods 336 is fixedly connected to the bottom of the outer gear ring 324. The main rotating shaft 331 fixedly installed at the bottom of the inner gear ring 323 provides stable support for the first stirring screens 332. The first stirring screens 332, evenly distributed on the outer surface of the main rotating shaft 331, can perform preliminary stirring of the treatment liquid during rotation. The outer rail 333 and the slide 334 rotatably connected to its inner side... The design of the frame 334 is ingenious. The second stirring screen 335, which is fixedly installed at equal intervals at both the upper and lower ends of the slide 334, further enhances the stirring effect. The top of the slide 334 is fixedly connected to the bottom of the outer toothed ring 324 by the connecting rod 336, so that the rotation of the outer toothed ring 324 can drive the slide 334 and the second stirring screen 335 on it to rotate. Since the rotation directions of the outer toothed ring 324 and the inner toothed ring 323 are opposite, the first stirring screen 332 and the second stirring screen 335 can rotate in opposite directions, thereby forming a more complex and intense stirring flow field. This bidirectional and multi-level stirring method can greatly improve the uniformity and thoroughness of stirring, so that the waste gas and the treatment liquid can be more fully mixed and contacted, accelerating the reaction process and improving the efficiency and quality of waste gas treatment. It is of great significance for both promoting the chemical reaction and achieving a more uniform material distribution.

[0043] Please see Figures 1-3 and Figure 8The aeration assembly 34 includes an air pump 341, which is fixedly installed in the middle of one side of the main treatment tank 31. The input end of the air pump 341 is connected to the upper interior of the main treatment tank 31. An outer ring pipe 342 is fixedly installed at the bottom of the air pump 341, and the input end of the outer ring pipe 342 is connected to the output end of the air pump 341. Inclined pipes 343 are fixedly installed at equal intervals at the top of the outer ring pipe 342. An inner ring pipe 344 is fixedly installed through the end of the inclined pipe 343 and is located at the bottom of the main treatment tank 31. Aeration pipes 345 are fixedly installed at equal intervals at the top of the inner ring pipe 344, and aeration pipes 346 are fixedly installed at equal intervals on the inner side of the aeration pipes 345. All aeration pipes 346 are inclined downwards towards the inward direction. The air pump 341 is fixedly installed in the middle of one side of the main treatment tank 31 in a reasonable and stable position. The input end of the air pump 341 is connected to the interior of the main treatment tank 31. The upper end is connected, which can effectively extract gas from the upper part of the tank. The outer ring pipe 342 at the bottom of the air pump 341 is connected to the output end of the air pump 341 to realize gas transmission. The inclined pipes 343 at equal intervals at the top of the outer ring pipe 342 guide the gas to the inner ring pipe 344. This layout is uniform and reasonable. The aeration pipes 345 installed at equal intervals and the aeration pipes 346 with downward inclination on the inner side of the inner ring pipe 344 at the bottom of the main treatment tank 31 can evenly disperse the gas into the treatment liquid at a specific angle and direction. This design makes the gas form micro bubbles, increases the contact area between the gas and the treatment liquid, and promotes the dissolution and reaction of the gas in the solution. The inclined setting of the aeration pipe 346 also helps to form convection, further enhancing the mixing effect of gas and solution, improving aeration efficiency and quality, thus creating more favorable conditions for the treatment of waste gas, accelerating the treatment process, and improving the treatment effect.

[0044] Please see Figures 1-3 and Figure 9The secondary treatment unit 5 includes a secondary treatment tank 51, which is fixedly installed on the top of the mounting frame 4. A stirring frame 52 is movably installed inside the secondary treatment tank 51. A spraying mechanism 53 is fixedly installed at the upper part of the internal structure of the secondary treatment tank 51. A solenoid valve 54 is fixedly installed at the bottom of the secondary treatment tank 51. The input end of the solenoid valve 54 is connected to the output end of each connecting pipe 36. A drain valve 55 is fixedly installed on one side of the bottom of the secondary treatment tank 51. The drain valve 55 at the bottom of the secondary treatment tank 51 can be connected to an external water treatment pipeline. After the waste liquid is discharged, a new solution can be pumped to the top of the secondary treatment tank 51 through the drain valve 55 using an external pump 531. A supply pipeline can also be opened at the top of the secondary treatment tank 51 for easy addition of new solution. The methods for adding the solution are existing technologies and will not be elaborated here. Tank 51 is securely installed by the fixing frame 4. The internally movable stirring frame 52 can promote further mixing and reaction between the treatment liquid and the waste gas. The spray mechanism 53 at the upper end of the interior can make the treatment liquid contact the waste gas more evenly, enhancing the treatment effect. The solenoid valve 54 at the bottom is connected to the connecting pipe 36, realizing effective connection with the main treatment mechanism 3, which facilitates the flow and control of the solution. The drain valve 55 is set to facilitate the discharge of waste liquid and can be connected to the external water treatment pipeline to realize the orderly discharge of waste liquid. The drain valve 55 can also add new solution through the external liquid pump 531. The liquid supply pipeline opened at the top also provides convenience for adding new solution, ensuring timely replenishment and renewal of solution during the treatment process, thereby maintaining the continuous and efficient working state of the auxiliary treatment mechanism 5 and improving the comprehensive treatment capacity and stability of the entire waste gas treatment device.

[0045] Please see Figures 1-3 and Figure 8The mixing rack 52 includes a secondary cover 521, which is fixedly installed on the top of the secondary treatment tank 51. A second motor 522 is fixedly installed on the top of the secondary cover 521. The output end of the second motor 522 passes through the secondary cover 521 and is fixedly installed with a secondary rotating shaft 523. A mixing mesh frame 524 is fixedly installed at equal intervals on the outer surface of the secondary rotating shaft 523. Solenoid valves 54 are also fixedly installed at equal intervals on the upper outer side of the secondary treatment tank 51. An exhaust gas inlet pipe 525 is fixedly installed on the outer end of the solenoid valves 54 at the upper end of the secondary treatment tank 51. The input end of the sub-cover 525 is connected to the upper end of the main treatment tank 31. An exhaust pipe is fixedly installed on one side of the top of the sub-cover 521. The exhaust pipe can be connected to an external combustion chamber or other combustion equipment, through which the exhaust gas can be further treated. The spraying mechanism 53 includes a liquid pump 531, which is fixedly installed in the middle of the outer side of the sub-treatment tank 51. The input end of the liquid pump 531 is connected to the inner bottom of the sub-treatment tank 51. The output end of the liquid pump 531 passes through the interior of the sub-treatment tank 51 and is fixedly installed with an annular ring at the upper end. The inner side of the annular pipe 532 is fixedly equipped with spray nozzles 533 at equal intervals. The sub-cover 521 on the top of the sub-treatment tank 51 provides a stable installation position for the second motor 522. The second motor 522 drives the sub-shaft 523 and the stirring mesh frame 524 with equal intervals on the outer surface to rotate, which can effectively stir the solution and waste gas and enhance the treatment effect. The solenoid valve 54 and the waste gas inlet pipe 525 on the upper outer side of the sub-treatment tank 51 realize the waste gas communication with the main treatment tank 31, ensuring that the waste gas can smoothly enter the sub-treatment tank. The sub-cover 521 The exhaust pipe on one side of the top can be connected to an external combustion device for further treatment of the treated exhaust gas, which improves the treatment level and environmental friendliness of the exhaust gas. In the spraying mechanism 53, the liquid pump 531 in the middle draws the solution at the bottom of the auxiliary treatment tank 51 to the annular pipe 532 at the upper end of the inside, and sprays it out through the spray nozzles 533 at equal intervals on the inner side, so that the solution forms water mist, increases the contact area with the exhaust gas, and improves the treatment efficiency. The overall design is ingenious, and the components work together to enable the auxiliary treatment tank 51 to play an excellent role in exhaust gas treatment.

[0046] A method for using an ethylene oxide sterilizer exhaust gas treatment device for paper-plastic bags includes the following steps:

[0047] Step 1: Connect the main treatment unit 3 to the exhaust gas source. Use the exhaust gas pipe 37 to connect this device to the exhaust gas discharge pipe of the ethylene oxide sterilizer. The exhaust gas enters the main treatment tank 31 through the exhaust gas pipe 37.

[0048] Step 2: Waste gas circulation and bubble formation within the main treatment tank 31. The air pump 341 is activated to draw air from the upper part of the main treatment tank 31 to the bottom outer ring pipe 342. From there, the air is discharged through the outer ring pipe 342 and inclined pipe 343 to the inner ring pipe 344. With the help of the aeration pipes 345 and 346 on the ring pipe, the waste gas is evenly formed into tiny bubbles that integrate into the main treatment tank 31. The air pump 341 is continuously activated to circulate the waste gas from the top of the tank to the bottom, promoting full contact between the waste gas and the treatment solution and improving the treatment effect. Specifically, the main treatment mechanism 3 is carefully designed so that during actual application, the device can be connected to the waste gas discharge pipe of the ethylene oxide sterilizer via the waste gas pipe 37. At this time, the waste gas can enter the main treatment tank 31 through the waste gas pipe 37. During this process, the air pump 341 is activated... 41. The air pump 341 can draw air from the upper part of the main treatment tank 31 to the outer ring pipe 342 at the bottom, and then discharge it through the outer ring pipe 342 and the inclined pipe 343, thereby discharging the waste gas into the inner ring pipe 344. With the cooperation of the aeration pipes 345 and 346 evenly spaced on the ring pipe, the waste gas can be evenly discharged into the main treatment tank 31, so that the waste gas can evenly form micro bubbles and integrate into the main treatment tank 31. By continuously starting the air pump 341, the waste gas at the top of the main treatment tank 31 can be circulated to the bottom of the main treatment tank 31. In this way, the waste gas can be circulated and treated, so that the waste gas inside the main treatment tank 31 can be circulated and treated repeatedly, thereby significantly improving the overall treatment effect of the device.

[0049] Step 3: Stirring and agitation of air bubbles in the main processing tank 31. The stirring assembly 33 and the drive assembly 32 work together. The first motor 322 drives the internal gear ring 323, the main shaft 331, and the first stirring screen 332 to rotate clockwise. Simultaneously, the internal gear ring 323 drives the external gear ring 324 via the transmission gear 325, causing the external gear ring 324 and the slide 334 to rotate counter-clockwise, which in turn drives the second stirring screen 335 to rotate counter-clockwise. The first stirring screen 332 and the second stirring screen 335 violently agitate in opposite directions, agitating the air bubbles and thus... The waste gas contacts the reaction solution more evenly, improving reaction efficiency and waste gas treatment effect. Specifically, this is achieved through the clever arrangement of the stirring component 33 and the driving component 32 working together. During the aeration process, the device can be operated by starting the first motor 322. The first motor 322 can directly drive the internal gear ring 323 to rotate, which in turn drives the main shaft 331 to rotate, and the main shaft 331 to rotate, which in turn drives the first stirring screen 332 to rotate. During this process, the internal gear ring 323 drives two transmission components... The driving gear 325 engages in transmission, thereby driving the external gear ring 324. Through the transmission of the two gears 325, the external gear ring 324 and the internal gear ring 323 rotate in opposite directions. The internal gear ring 323 drives the shaft to rotate the first stirring screen plate 332 in the forward direction, while the external gear ring 324 and the slide 334 inside the drive rail 333 rotate in the reverse direction, causing the second stirring screen plate 335 to also rotate in the reverse direction. Both the first stirring screen plate 332 and the second stirring screen plate 335 rotate in opposite directions. The movement causes the second stirring screen 335 and the first stirring screen 332 to work together to agitate and disperse the bubbles; the vigorous agitation of the first stirring screen 332 and the second stirring screen 335 can cause the bubbles to be evenly dispersed and to quickly form uniform and tiny bubbles, so that the waste gas can contact the reaction solution more evenly, thereby greatly improving the reaction efficiency of the waste gas and the reaction solution, significantly improving the overall treatment effect of the equipment on the waste gas, and maximizing the reaction rate of the waste gas and the solution.

[0050] Step 4: The exhaust gas after the main treatment enters the auxiliary treatment tank 51. After the main treatment mechanism 3 finishes processing, the solenoid valve 54 at the upper end of the auxiliary treatment tank 51 is opened, and the exhaust gas in the main treatment tank 31 is discharged to the auxiliary treatment tank 51 through the exhaust gas inlet pipe 525.

[0051] Step 5: Spraying and further treatment of the solution in the auxiliary treatment tank 51. Start the liquid pump 531 to pump the solution in the auxiliary treatment tank 51 to the annular pipe 532, and discharge it through the spray nozzle 533 to form water mist, so that the mist solution reacts with the waste gas for a longer time and further treats the waste gas.

[0052] Step Six: Solution Replacement and Continuous Operation of Sub-treatment Tank 51. If solution replacement is required during equipment use, activate the bidirectional water pump 35 and the corresponding solenoid valve 54 to discharge the solution from the main treatment tank 31 to the sub-treatment tank 51, thus discharging waste liquid. The three sets of sub-treatment tanks 51 work collaboratively: one discharges waste liquid, one supplies solution, and one treats waste gas, ensuring continuous and uninterrupted waste gas treatment and improving treatment efficiency. Specifically, by rationally configuring the sub-treatment mechanism 5, the solenoid valve 54 at the top of the sub-treatment tank 51 can be opened after the main treatment mechanism 3 has finished processing. At this time, the waste gas can be discharged through the waste gas inlet pipe 525. The exhaust gas inside the treatment tank 31 is discharged into the auxiliary treatment tank 51. During this period, by starting the liquid pump 531, the liquid pump 531 can pump the solution inside the auxiliary treatment tank 51 to the annular pipe 532, and discharge it through the various spray nozzles 533 inside the annular pipe 532, causing the solution to form a water mist that diffuses inside the auxiliary treatment tank 51. At this time, the mist-like solution can react with the solution for a longer period of time. In this process, the exhaust gas can be further treated, thereby improving the overall exhaust gas treatment effect of this device. Furthermore, if it is necessary to replace the solution during the use of this equipment, the bidirectional water can be turned on. Pump 35; at this time, opening the solenoid valve 54 at the lower end of one of the auxiliary treatment tanks 51 will allow the bidirectional water pump 35 to pump the solution inside the main treatment tank 31 to the auxiliary treatment tank 51; at this time, simply opening the drain valve 55 will discharge the waste liquid; during this period, the solenoid valve 54 at the bottom of another set of auxiliary treatment tanks 51 can be opened, and the solution in the auxiliary treatment tanks 51 of other units can be pumped to the main treatment tank 31 by the bidirectional water pump 35; since the auxiliary treatment tanks 51 are set up in three sets, during use, one set can be used to store and discharge the solution after the reaction is completed, while during the discharge process, the other set can be used The solution is supplied to the main treatment tank 31, while the remaining tank is in a state of further treating the waste gas. After the solution supply is completed, new solution can be introduced into the auxiliary treatment tank 51 for later use. During this period, after the auxiliary treatment tank 51 has completed further treatment of the solution, it can act as a waste liquid tank, and the solution can be replenished in time after the new solution is supplied into the main treatment tank 31. It can be seen that the design of the three auxiliary treatment mechanisms 5 in this device can enable the equipment to treat the waste gas continuously and uninterruptedly, which significantly improves the overall treatment efficiency of the waste gas of the ethylene oxide sterilizer for paper and plastic bags.

Claims

1. A waste gas treatment device for an ethylene oxide sterilizer used for paper-plastic bags, characterized in that, Includes a base (1), a support frame (2) is fixedly installed in the middle of the top of the base (1), a main processing mechanism (3) is fixedly installed on the inner side of the support frame (2), a fixed frame (4) is fixedly installed in a ring on the outer side of the top of the base (1), a secondary processing mechanism (5) is fixedly installed on the top of the fixed frame (4), and the bottom output end of the main processing mechanism (3) is connected to the bottom of the secondary processing mechanism (5); The main treatment unit (3) includes a main treatment tank (31), which is fixedly installed on the inside of the support frame (2). A drive assembly (32) is fixedly installed inside the main treatment tank (31). A stirring assembly (33) is fixedly installed at the bottom of the drive assembly (32). An aeration assembly (34) is fixedly installed at the lower end of the main treatment tank (31). A bidirectional water pump (35) is fixedly installed at the bottom of the main treatment tank (31). A connecting pipe (36) is fixedly installed at the output end of the bidirectional water pump (35). The outer end of the connecting pipe (36) is connected to the bottom of each auxiliary treatment unit (5). The input end of the bidirectional water pump (35) is connected to the inside of the main treatment tank (31). The sub-processing mechanism (5) includes a sub-processing tank (51), which is fixedly installed on the top of the fixed frame (4). A stirring rack (52) is movably installed inside the sub-processing tank (51). A spraying mechanism (53) is fixedly installed at the upper end of the sub-processing tank (51). A solenoid valve (54) is fixedly installed at the bottom of the sub-processing tank (51). The input end of the solenoid valve (54) is connected to the output end of each connecting pipe (36). A drain valve (55) is fixedly installed on one side of the bottom of the sub-processing tank (51). The stirring rack (52) includes a sub-cover (521), which is fixedly installed on the top of the sub-treatment tank (51). A second motor (522) is fixedly installed on the top of the sub-cover (521). The output end of the second motor (522) passes through the sub-cover (521) and is fixedly installed with a sub-rotating shaft (523). A stirring mesh frame (524) is fixedly installed at equal intervals on the outer surface of the sub-rotating shaft (523). A solenoid valve (54) is also fixedly installed at equal intervals on the upper outer side of the sub-treatment tank (51). An exhaust gas inlet pipe (525) is fixedly installed on the outer end of the solenoid valve (54) at the upper end of the sub-treatment tank (51). The input end of the exhaust gas inlet pipe (525) is connected to the upper end of the main treatment tank (31). An exhaust gas discharge pipe is fixedly installed on one side of the top of the sub-cover (521). The spraying mechanism (53) includes a liquid pump (531), which is fixedly installed on the outer middle of the sub-treatment tank (51). The input end of the liquid pump (531) is connected to the inner bottom of the sub-treatment tank (51). The output end of the liquid pump (531) passes through the inner upper end of the sub-treatment tank (51) and is fixedly installed with an annular pipe (532). Spray nozzles (533) are fixedly installed at equal intervals on the inner side of the annular pipe (532).

2. The waste gas treatment device for an ethylene oxide sterilizer for paper-plastic bags according to claim 1, characterized in that, The drive assembly (32) includes a main cover (321), which is fixedly installed on the top of the main treatment tank (31). A first motor (322) is fixedly installed on the top of the main cover (321). An internal gear ring (323) is fixedly installed through the main cover (321) at the output end of the first motor (322). An external gear ring (324) is rotatably connected to the bottom of the main cover (321). Two transmission gears (325) are rotatably connected to one side of the bottom of the main cover (321). The two transmission gears (325) are meshed with each other. One of the two transmission gears (325) meshes with the internal gear ring (323), and the other transmission gear (325) meshes with the external gear ring (324). An exhaust pipe (37) is fixedly installed on one side of the top of the main cover (321).

3. The waste gas treatment device for an ethylene oxide sterilizer for paper-plastic bags according to claim 2, characterized in that, The stirring assembly (33) includes a main rotating shaft (331), which is fixedly installed at the bottom of the internal gear ring (323), and the outer surface of the main rotating shaft (331) is fixedly installed with first stirring mesh plates (332) at equal intervals.

4. The waste gas treatment device for an ethylene oxide sterilizer for paper-plastic bags according to claim 3, characterized in that, The stirring assembly (33) also includes an outer rail (333), which is fixedly installed at both ends inside the main processing tank (31). A slide (334) is rotatably connected to the inner side of the outer rail (333). A second stirring mesh plate (335) is fixedly installed at equal intervals at both ends inside the slide (334). A connecting rod (336) is fixedly installed at equal intervals on the top of the slide (334). The top of the connecting rod (336) is fixedly connected to the bottom of the outer toothed ring (324).

5. The waste gas treatment device for an ethylene oxide sterilizer for paper-plastic bags according to claim 4, characterized in that, The aeration assembly (34) includes an air pump (341), which is fixedly installed in the middle of one side of the main treatment tank (31). The input end of the air pump (341) is connected to the upper inside of the main treatment tank (31). An outer ring pipe (342) is fixedly installed at the bottom of the air pump (341). The input end of the outer ring pipe (342) is connected to the output end of the air pump (341). Inclined pipes (343) are fixedly installed at equal intervals at the top of the outer ring pipe (342). An inner ring pipe (344) is fixedly installed through the main treatment tank (31) at the end of the inclined pipe (343). The inner ring pipe (344) is located at the bottom inside the main treatment tank (31). Aeration pipes (345) are fixedly installed at equal intervals at the top of the inner ring pipe (344).

6. The waste gas treatment device for an ethylene oxide sterilizer for paper-plastic bags according to claim 5, characterized in that, Aeration pipes (346) are fixedly installed at equal intervals on the inner side of the aeration pipe (345), and the aeration pipes (346) are all inclined downwards towards the inner side.

7. A method of using an ethylene oxide sterilizer exhaust gas treatment device for paper-plastic bags, comprising the ethylene oxide sterilizer exhaust gas treatment device for paper-plastic bags as described in claim 6, characterized in that... Includes the following steps: Step 1: The main treatment unit (3) is connected to the exhaust gas source. The exhaust gas pipe (37) is used to connect this device to the exhaust gas discharge pipe of the ethylene oxide sterilizer. The exhaust gas enters the main treatment tank (31) through the exhaust gas pipe (37). Step 2: Waste gas circulation and bubble formation in the main treatment tank (31). Start the air pump (341) to draw the air from the upper part of the main treatment tank (31) to the bottom outer ring pipe (342), and then discharge it to the inner ring pipe (344) through the outer ring pipe (342) and inclined pipe (343). With the help of the aeration pipe (345) and aeration pipe (346) on the ring pipe, the waste gas is evenly formed into tiny bubbles and integrated into the main treatment tank (31). Continue to start the air pump (341) to realize the circulation of waste gas from the top of the tank to the bottom, promote the full contact between waste gas and treatment solution and improve the treatment effect. Step 3: Stirring and bubble dispersing in the main treatment tank (31). The stirring assembly (33) and the drive assembly (32) work together to start the first motor (322) to drive the inner gear ring (323), the main shaft (331) and the first stirring screen (332) to rotate in the forward direction. At the same time, the inner gear ring (323) drives the outer gear ring (324) through the transmission gear (325), so that the outer gear ring (324) and the slide (334) rotate in the reverse direction, driving the second stirring screen (335) to rotate in the reverse direction. The first stirring screen (332) and the second stirring screen (335) stir violently in opposite directions, dispersing the bubbles, so that the waste gas can contact the reaction solution more evenly, improving the reaction efficiency and waste gas treatment effect. Step 4: The exhaust gas after the main treatment enters the auxiliary treatment tank (51). After the main treatment mechanism (3) finishes processing, the solenoid valve (54) at the top of the auxiliary treatment tank (51) is opened, and the exhaust gas in the main treatment tank (31) is discharged to the auxiliary treatment tank (51) through the exhaust gas inlet pipe (525). Step 5: Spraying and further treatment of the solution in the auxiliary treatment tank (51). Start the liquid pump (531) to pump the solution in the auxiliary treatment tank (51) to the ring pipe (532) and discharge it through the spray nozzle (533) to form water mist, so that the mist solution reacts with the waste gas for a longer period of time and further treats the waste gas. Step 6: Solution replacement and continuous operation of the auxiliary treatment tank (51). If the solution needs to be replaced during equipment use, turn on the bidirectional water pump (35) and the corresponding solenoid valve (54) to discharge the solution in the main treatment tank (31) to the auxiliary treatment tank (51) and discharge the waste liquid. The three sets of auxiliary treatment tanks (51) work together, one set discharges waste liquid, one set supplies solution, and one set treats waste gas to ensure that the equipment can continuously and uninterruptedly treat waste gas and improve treatment efficiency.

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