A multi-channel multi-stage circulation CO elimination system and elimination method

Abstract

A multi-channel multi-stage circulation CO elimination system and elimination method, the system: smoke dust filtration and dehumidification cabin, multi-stage CO elimination cabin and drainage device are connected in sequence; the inside of the smoke dust filtration and dehumidification cabin is provided with a flow equalizing plate, a particle filter and an air dehumidification module from left to right in sequence, and a gas sensor and a first CO sensor are installed on the air inlet side, a second CO sensor is installed on the air outlet side, a first air volume control valve and a first exhaust fan are installed on the upper part of the air outlet side; the multi-stage CO elimination cabin is divided into an air flow circulation cavity and a CO elimination cavity, and a second exhaust fan, a heating assembly and a temperature sensor are installed in the air flow circulation cavity, and a multi-stage CO elimination assembly and a third CO sensor are installed in the CO elimination cavity; the drainage device is provided with a fan. The method: the fan provides a drainage negative pressure, and the air flow is filtered and dried in sequence, and then the CO in the air flow is effectively eliminated by the three elimination methods. The system and method can effectively eliminate CO in the air flow.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of CO elimination, and particularly relates to a multi-channel multi-stage circulating CO elimination system and an elimination method. BACKGROUND

[0002] When blasting operation is performed, a large amount of toxic and harmful gas is generated by the explosion of explosives, and a large amount of particulate dust is also carried, which greatly deteriorates the operation environment and causes poisoning accidents of personnel to occur, seriously restricting the safety production of enterprises. When the explosives explode, the reaction is incomplete, and the toxic and harmful gaseous products generated during blasting are mainly CO gas, which is colorless and odorless, and has extremely strong toxicity and is extremely easy to cause casualties at high concentrations. Especially, the environment for blasting operation is generally small, the relative humidity of the environment is relatively large, and the ventilation condition on site is poor, so high-concentration CO is difficult to be treated, and CO poisoning accidents are extremely easy to occur. The blasting operation site currently mainly adopts a local mechanical ventilation method to dilute high-concentration CO, and when the effect of mechanical ventilation is affected by a series of factors such as the inclination of the roadway, the ventilation distance, the ventilation position and the like, and due to the close density of CO and air, the ventilation cannot guarantee a good dilution effect. In addition, there is also a method of using an elimination solution to absorb CO gas, but this method basically brings potential danger and affects the overall environmental safety. Therefore, it is necessary to provide an elimination system and method capable of efficiently eliminating CO in tunnel air flow, so as to reduce the harm of high-concentration CO to a certain extent and protect the life safety of personnel. SUMMARY

[0003] In view of the problems existing in the prior art, the application provides a multi-channel multi-stage circulating CO elimination system and elimination method, which has a reasonable structure, low resistance and high efficiency, a flexible and controllable CO elimination process, and an ideal CO elimination effect. The system can realize multi-stage elimination of CO toxic and harmful gas in blasting operation, can significantly improve the elimination efficiency, and can ensure the life and health safety of construction personnel by improving the air quality of the construction environment. The method has a simple implementation process, high intelligentization degree, good safety performance, and the ability of continuous CO elimination, can efficiently eliminate CO generated in the blasting process, and can simultaneously remove part of the dust particles in the air flow, which is beneficial to reducing the pollution degree of the environment caused by blasting operation.

[0004] In order to achieve the above purpose, the application provides a multi-channel multi-stage circulating CO elimination system, which comprises a smoke and dust filtering and dehumidifying cabin, and further comprises a multi-stage CO elimination cabin and a drainage device.

[0005] The smoke and dust filtering and dehumidifying cabin, the multi-stage CO elimination cabin and the drainage device are sequentially distributed along the left-right direction.

[0006] The smoke dust filtering and dehumidifying cabin comprises a cabin body one, a flow equalizing plate, a particle filter, an air dehumidifying module, a gas sensor, a first CO sensor, a second CO sensor, a first air volume control valve and a first exhaust fan.

[0007] Opposite left and right ends of the cabin body one are provided with an air inlet one and an air outlet one, the left end upper portion is provided with an air inlet two, and the right end upper portion is provided with an air outlet two, and the air inlet one, the air inlet two and the air outlet two are respectively used as a first air inlet, a second air inlet and a first air outlet of a multi-channel multi-stage circulating CO elimination system.

[0008] The flow equalizing plate, the particle filter and the air dehumidifying module are distributed between the first air inlet and the first air outlet and are sequentially and spacedly installed in the inner cavity of the cabin body one from left to right.

[0009] The particle filter comprises a driven spool, a driving spool, a filter mesh body and a driving motor, the driven spool and the driving spool are oppositely distributed on the top and the bottom of the cabin body one and are rotatably connected with the cabin body one through the rotating shafts of the respective shaft centers, the main body section of the filter mesh body is wound on the outside of the driven spool, and the connecting section is wound on the outside of the driving spool, the driving motor is installed on the outside of the cabin body one, the output shaft of the driving motor is connected with the rotating shaft in the center of the driving spool, and the driving motor is used to drive the driving spool to rotate and drive the filter mesh body to move, and a dust collecting cavity is arranged on the bottom of the cabin body one and corresponds to the position of the particle filter.

[0010] The air dehumidifying module comprises a first dehumidifying unit, a second dehumidifying unit and a third dehumidifying unit, the first dehumidifying unit comprises a bearing mesh body one and desiccant particles one, the size of the outer contour of the bearing mesh body one is matched with the size of the inner cavity of the cabin body one, the longitudinal section of the left and right ends of the bearing mesh body one is zigzag-shaped, the desiccant particles one are filled in the inner space of the bearing mesh body one, the second dehumidifying unit comprises a bearing mesh body two and desiccant particles two, the size of the outer contour of the bearing mesh body two is matched with the size of the inner cavity of the cabin body one, the longitudinal section of the left and right ends of the bearing mesh body two is zigzag-shaped, the particle size of the desiccant particles two is smaller than that of the desiccant particles one, and the desiccant particles two are filled in the inner space of the bearing mesh body two, the third dehumidifying unit comprises a bearing mesh body three and desiccant particles three, the bearing mesh body three is matched with the size of the inner cavity of the cabin body one, the longitudinal section of the left and right ends of the bearing mesh body three is zigzag-shaped, the particle size of the desiccant particles three is smaller than that of the desiccant particles one, and the desiccant particles three are filled in the inner space of the bearing mesh body three, and the first dehumidifying unit, the second dehumidifying unit and the third dehumidifying unit are sequentially fixedly connected through flanges.

[0011] The gas sensor, the first CO sensor and the second CO sensor are installed on the top of the inner cavity of the cabin body one, and the gas sensor and the first CO sensor are located on the left side of the flow equalizing plate, and the second CO sensor is located on the right side of the air dehumidification module;

[0012] The first air volume control valve is installed in the first air outlet for opening or closing the first air outlet; and the first exhaust fan is installed outside the first air outlet;

[0013] The multi-stage CO elimination cabin comprises a cabin body two, a partition plate, a flow guide plate, a second air volume control valve, a heating assembly, a temperature sensor, a second exhaust fan, a multi-stage CO elimination assembly, a third CO sensor and an extension driving mechanism;

[0014] The cabin body two is provided with an air inlet three and an air outlet three at opposite ends thereof, and the air inlet three is connected with the air outlet one of the cabin body one;

[0015] The partition plate is installed on the upper part of the inner cavity of the cabin body two, and divides the inner cavity of the cabin body two into an air flow circulation cavity at the upper part and a CO elimination cavity at the lower part; the front part and the rear part of the partition plate are respectively provided with a front circulation air port and a rear circulation air port;

[0016] A plurality of flow guide plates are installed side by side in the front circulation air port;

[0017] The second air volume control valve is installed in the rear circulation air port for opening or closing the rear circulation air port;

[0018] The heating assembly is installed at the middle section of the air flow circulation cavity;

[0019] The temperature sensor is installed on the heating assembly;

[0020] The second exhaust fan is installed at the right part of the air flow circulation cavity and located between the heating assembly and the rear circulation air port;

[0021] The multi-stage CO elimination assembly is arranged in the CO elimination cavity of the cabin body two and located between the front circulation air port and the rear circulation air port; the multi-stage CO elimination assembly comprises a bottom track, a first elimination piece, a second elimination piece and a rotating elimination piece; the bottom track is installed at the bottom of the CO elimination cavity, and the length direction thereof extends along the left-right direction, and the length direction of the bottom track is provided with a limiting block at both ends thereof;

[0022] The size of the profile of the first and second elimination components is adapted to the size of the inner cavity of the cabin body two; the first elimination component comprises an external net box one and an internal elimination unit one; the bottom of the external net box one is fixedly connected with a sliding block one, and is slidably installed on the left segment of the bottom track through the sliding block one; a plurality of internal elimination unit ones are fixedly and stackingly installed in the inner cavity of the external net box one, and have flow passages one communicating in the left-right direction, and the flow passages one are coated with CO elimination coating; the second elimination component comprises an external net box two and an internal elimination unit two; the bottom of the external net box two is fixedly connected with a sliding block two, and is slidably installed on the right segment of the bottom track through the sliding block two; a plurality of internal elimination unit twos are fixedly and stackingly installed in the inner cavity of the external net box two, and have flow passages two communicating in the left-right direction, and the flow passages two are coated with CO elimination coating;

[0023] The rotating elimination component comprises three rotating assemblies and three pairs of racks; the rotating assembly comprises a blade disc, a rotating shaft, an elimination fan blade and a gear; the blade disc is uniformly provided with a plurality of insertion slots in the circumferential direction; the rotating shaft is fixedly installed at the center of the blade disc; the surfaces of a plurality of elimination fan blades are coated with CO elimination coating, the number of the elimination fan blades corresponds to the number of the insertion slots, and the elimination fan blades are correspondingly inserted into the insertion slots; the gear is coaxially fixedly sleeved on the outside of the rotating shaft and located at the back side of the blade disc; the three rotating assemblies are arranged between the first and second elimination components from top to bottom and are rotatably connected to the inside of the cabin body two through the respective rotating shafts; the three pairs of racks correspond to the three rotating assemblies respectively, each pair of racks is distributed in the left-right direction and in the up-down direction on the outside of the corresponding gear and is engaged with the gear; wherein the left end of the rack on the upper side is fixedly connected with the right end of the external net box one, and the right end extends to the right side of the gear; the right end of the rack on the lower side is fixedly connected with the left end of the external net box two, and the left end extends to the left side of the gear;

[0024] The third CO sensor is installed at the top of the inner cavity of the cabin body two and located at the right side of the second elimination component;

[0025] The telescopic driving mechanism is arranged at the right side of the second elimination component, and comprises a vertical support and a linear electric push rod; the vertical support is fixedly installed at the bottom of the inner cavity of the cabin body two; a plurality of linear electric push rods are horizontally arranged between the second elimination component and the vertical support, and the telescopic end of the linear electric push rod is connected with the right end of the external net box two, and the fixed end of the linear electric push rod is fixedly connected with the vertical support;

[0026] The drainage device comprises a drainage shell, a mounting seat and a fan, a fourth air inlet is formed at the left end of the drainage shell, a fourth air outlet is formed at the right end of the drainage shell, and the fourth air inlet is connected with the third air outlet of the cabin body two; the fan is fixedly installed in the inner cavity of the drainage shell through the mounting seat, and the air outlet section of the fan is penetrated out to the right end of the drainage shell (53) through the fourth air outlet and serves as a second air outlet of the multi-channel multi-stage circulating CO elimination system.

[0027] Further, in order to conveniently adjust the working height, an automatic lifting platform is further included, and the automatic lifting platform comprises a cushioning assembly, a scissor lifting frame and a lifting hydraulic cylinder.

[0028] The scissor lifting frame is arranged below the multi-stage CO elimination cabin, the top end of the scissor lifting frame is connected with the bottom of the multi-stage CO elimination cabin through a plurality of cushioning assemblies, and a plurality of pairs of traveling wheels are arranged at the bottom end of the scissor lifting frame; the lifting hydraulic cylinder is arranged in the interior of the scissor lifting frame and is used for driving the scissor lifting frame to perform lifting action through telescopic action.

[0029] The particle filter further comprises a vibration assembly, the vibration assembly comprises a support frame and a vibrator, the support frame is installed at the left side of the driving drum, the left end of the vibrator is fixedly connected with the right end of the support frame, and the right end of the vibrator is in contact with the filter screen body.

[0030] Further, in order to realize full automation of the CO elimination operation, a controller is further included, and the controller is connected with the gas sensor, the first CO sensor, the second CO sensor, the temperature sensor, the third CO sensor, the first air volume control valve, the first exhaust fan, the driving motor, the vibrator, the second air volume control valve, the heating assembly, the second exhaust fan, the linear electric push rod and the fan.

[0031] Further, in order to make the airflow passing through more fully contact with the surface of the flow channel, so as to effectively improve the CO elimination effect, the cross sections of the flow channel one and the flow channel two are all rectangular and continuously bent; in order to make the airflow more fully contact with the surface of the elimination fan blade, so as to effectively improve the CO elimination effect, the elimination fan blade is continuously sawtooth-shaped, and a plurality of circular holes are formed in the blade body.

[0032] Further, in order to improve the airflow uniformization effect and effectively reduce the cost, the honeycomb structure of the airflow uniformization plate is made of flame-retardant plastic material, and the thickness is 3-6 cm.

[0033] Further, in order to avoid the large particle substances from entering the elimination system to cause blockage or reduce the CO elimination effect, the first air inlet is located at the central area of the left end of the cabin body one, the cross section is square, a stainless steel protective filter screen is assembled in the interior of the first air inlet, the stainless steel protective filter screen is used for preventing the large particle substances from entering the interior of the smoke dust filtering and dehumidifying cabin, and the second air inlet is rectangular.

[0034] Further, in order to ensure that the connection position has good air tightness, a fireproof sealing gasket is arranged around the connection between the first dehumidifying unit and the second dehumidifying unit and around the connection between the second dehumidifying unit and the third dehumidifying unit.

[0035] In the present application, the flow uniformizing plate is arranged in the smoke dust filtering cabin, which can effectively change the speed and direction of the incoming airflow, so that the airflow can flow more uniformly through the particle filtering device and the air dehumidifying module. On the one hand, each part of the filtering screen body and each part of the air dehumidifying module can be fully utilized, so that the dust particles in the airflow can be filtered more efficiently and the airflow can be dried more efficiently. On the other hand, the resistance of the airflow can be effectively reduced, thereby ensuring the elimination efficiency of CO. For the particle filtering device, the winding action of the filtering screen body is performed by the driving drum and the driven drum, which can adjust the different sections of the filtering screen body online. In this way, the unused section of the filtering screen body can be adjusted to the dust removal position in time, thereby effectively ensuring the filtering effect of the dust particles in the airflow. The ash collection chamber is arranged at the bottom of the first cabin corresponding to the position of the particle filtering device, which can facilitate the collection of dust particles falling from the filtering screen body. The air dehumidifying module is composed of three dehumidifying units arranged in sequence, which can effectively ensure the drying effect. The gas sensor and the first CO sensor are arranged at the air inlet side of the smoke dust filtering cabin, which can facilitate the real-time acquisition of the gas concentration data and the CO concentration data one at the air inlet side. In this way, not only can the alarm action be performed in time when the gas concentration exceeds the standard, but also the CO concentration in the airflow at the air inlet side can be known in time, thereby determining whether the current airflow needs to be subjected to CO elimination operation. The second CO sensor is arranged at the air outlet side of the smoke dust filtering cabin, which can facilitate the real-time acquisition of the CO concentration data two at the air outlet side. In this way, the current airflow can be further determined whether to be subjected to CO elimination operation by combining the CO concentration data one at the air inlet side. On the basis of the first air inlet being arranged at the left end of the smoke dust filtering cabin, the second air inlet is also arranged at the upper part of the left end of the smoke dust filtering cabin, which can introduce the airflow through the two air inlets at the same time, thereby facilitating the flow of the incoming air, which can meet the needs of efficient CO elimination. The first air outlet is arranged at the upper part of the right end of the smoke dust filtering cabin, and the first air volume control valve and the first exhaust fan are installed therein, which can facilitate the control of the opening and closing of the first air outlet through the first air volume control valve, and the negative pressure for external drainage can be provided by the first exhaust fan. In this way, when the CO concentration data one and two are both low and do not need to be subjected to CO elimination treatment, the first air volume control valve can be directly opened and the first exhaust fan can be controlled to start, thereby the airflow after filtering and drying can be directly introduced to the outside of the smoke dust filtering cabin, thereby avoiding the waste of CO elimination resources. The multiple-stage CO elimination cabin is separated into the airflow circulation cavity and the CO elimination cavity by the partition plate, and the front circulation air inlet and the rear circulation air inlet are arranged at the front and rear parts of the partition plate, respectively. In this way, the CO elimination cavity can be used as the main cavity for CO elimination operation, and the airflow circulation cavity can be used as the auxiliary cavity to provide a circulation path.The plurality of flow guide plates are installed in the front circulating air port, the second air volume control valve is installed in the rear circulating air port, and the second exhaust fan is installed in the air flow circulating cavity, so that the air flow can circulate through the air flow circulating cavity and the CO elimination cavity when the second air volume control valve is opened and the second exhaust fan is started, and the air flow can pass through the multi-stage CO elimination assembly multiple times through the circulating flow mode when the elimination effect is not ideal after the air flow passes through the CO elimination cavity once, thereby effectively improving the CO elimination effect. The bottom track is arranged at the bottom of the CO elimination cavity, and the first elimination element and the second elimination element are slidably assembled at the left and right parts of the bottom track, respectively, and the rotating elimination element is arranged between the first and second elimination elements, so that the three purification operations of the CO can be realized through the first elimination element, the rotating elimination element and the second elimination element, thereby effectively improving the CO elimination effect and efficiency. On this basis, the three gears on the three rotating assemblies interact with the first and second elimination elements through the three pairs of racks, so that the relative or opposite movement between the first and second elimination elements can drive the three rotating elements to rotate, thereby forming a gas disturbance space with disturbed air flow between the first and second elimination elements through the rotating action, which is conducive to prolonging the time of the air flow passing through the multi-stage CO elimination assembly, thereby facilitating the air flow to fully contact the CO elimination layer coated on each elimination element, facilitating more sufficient catalytic oxidation reaction, and effectively improving the CO elimination effect and efficiency. The telescopic driving mechanism located at the air outlet side is connected with the second elimination element, which can automatically drive the second elimination element to move reciprocally through the linear electric push rod, thereby synchronously driving the first elimination element to move reciprocally and driving the three rotating assemblies in the rotating elimination element to rotate. The third CO sensor is arranged at the air outlet side of the multi-stage CO elimination cabin, which can obtain CO concentration data three in real time, so that the elimination effect of the CO in the current air flow can be judged according to the CO concentration data three, thereby improving the elimination effect in time through the circulating CO elimination operation when the CO elimination effect is poor, to achieve the purpose of effectively eliminating the CO. The heating assembly and the temperature sensor are installed in the air flow circulating cavity, so that the CO elimination coating in each elimination element can be activated and regenerated through the high-temperature air flow generated by the heating assembly when the elimination capacity of the CO elimination coating in each elimination element is weakened, thereby realizing the purpose of repeated use of each elimination element. The fan is installed in the flow guide device, which can provide a flow guide negative pressure through the fan, and the size of the flow guide negative pressure can be controlled through the control of the power of the fan, so that the controllable traction power can be provided for the air flow passing through the smoke dust filtering and dehumidifying cabin and the multi-stage CO elimination cabin, thereby ensuring the continuity, controllability and stability of the CO elimination operation.

[0036] The application realizes negative pressure control through a drainage device, attracts smoke flow into the inside of the elimination system, and then carries out dehumidification treatment through particle filtration, so that the triple purification of the air flow is realized through a primary elimination component, a rotating elimination component and a secondary elimination component, and the continuous CO elimination operation can be realized. The system has reasonable structure, low resistance and high efficiency, flexible and controllable CO elimination process and ideal CO elimination effect, can realize multi-stage elimination of CO toxic and harmful gas in blasting operation, can significantly improve the elimination efficiency, and can ensure the life and health safety of construction personnel by improving the air quality of the construction environment.

[0037] The application also provides a multi-channel multi-stage circulation CO elimination method, which adopts a multi-channel multi-stage circulation CO elimination system and comprises the following steps.

[0038] Step one: assembly of the multi-channel multi-stage circulation CO elimination system and adjustment of the operation position;

[0039] S11: sequentially seal and connect the smoke dust filtration and dehumidification cabin, the multi-stage CO elimination cabin and the drainage device, install an automatic lifting platform at the bottom of the multi-stage CO elimination cabin, and form the multi-channel multi-stage circulation CO elimination system;

[0040] S12: carry out the air flow sealing property test of the multi-channel multi-stage circulation CO elimination system for a set test time, test the air tightness of the whole multi-channel multi-stage circulation CO elimination system, and perform S13 after the air tightness meets the requirements;

[0041] S13: move the multi-channel multi-stage circulation CO elimination system to a designated elimination position in the tunnel where blasting operation is to be performed, and fix the position of the walking wheels to prevent shaking or movement during the elimination operation;

[0042] S14: determine the elimination operation horizontal height according to the cross-sectional height of the tunnel, control the lifting hydraulic cylinder to perform the extension and retraction action, and lift the smoke dust filtration and dehumidification cabin, the multi-stage CO elimination cabin and the drainage device to the predetermined elimination operation horizontal height through the scissor lifting frame;

[0043] Step two: CO elimination operation;

[0044] The first air volume control valve and the second air volume control valve are kept in the closed state, and the second air volume control valve and the second exhaust fan are kept in the closed state; a time is set before the blasting operation starts, the fan is controlled to start working, the drainage negative pressure is provided by using the fan, at the same time, the multiple straight-line electric push rods are synchronously controlled to slowly perform the periodic reciprocating extension and retraction action, the secondary elimination component is driven to reciprocate in the left-right direction, the three rotating assemblies in the rotating elimination component are driven to reciprocate by the pair of matched racks, and the primary elimination component is synchronously driven to reciprocate in the left-right direction, so that the gas disturbance space with a disturbance force weaker than the drainage negative pressure is formed between the primary elimination component and the secondary elimination component.

[0045] Meanwhile, the gas concentration signal of the airflow before dehumidification is collected in real time by the gas sensor and sent to the controller; the CO concentration signal one of the airflow before dehumidification is collected in real time by the first CO sensor and sent to the controller; the controller obtains the gas concentration data and the CO concentration data one of the airflow before dehumidification according to the gas concentration signal and the CO concentration signal one respectively;

[0046] After the blasting operation starts, the airflow enters the smoke dust filtering and dehumidification cabin through the first air inlet under the action of the drainage negative pressure, and passes through the flow uniformizing plate, the particle filter and the air dehumidification module in turn. In this process, the flow uniformizing plate is used to change the speed and direction of the airflow, so that the airflow passes through the particle filter uniformly, and the filter screen body is used to filter the dust particles in the airflow, and the air dehumidification module is used to dry the airflow;

[0047] Meanwhile, the CO concentration signal two of the airflow after dehumidification is collected in real time by the second CO sensor and sent to the controller, and the controller obtains the CO concentration data two of the airflow after dehumidification according to the CO concentration signal two;

[0048] The controller compares the CO concentration data one and the CO concentration data two with the CO processing lower limit threshold value. When the CO concentration data one and the CO concentration data two are both lower than the CO processing lower limit threshold value, it is determined that the current airflow does not need to be subjected to CO elimination treatment, the first air volume control valve is directly controlled to be opened, the first exhaust fan is controlled to start working, and the dry airflow is directly drained to the outside of the smoke dust filtering and dehumidification cabin through the first air outlet by using the negative pressure provided by the first exhaust fan until the CO concentration data one is higher than or equal to the CO processing lower limit threshold value, the first air volume control valve is controlled to be closed, and the first exhaust fan is controlled to be stopped, so that the dry processed airflow continues to pass through the multi-stage CO elimination assembly. In this process, the airflow enters the gas disturbance space through a plurality of flow channels one in the primary elimination piece, changes the flow trajectory under the disturbance of the three rotating assemblies rotating to effectively prolong the time of passing through the gas disturbance space, and then flows out through a plurality of flow channels two in the secondary elimination piece. Synchronously, the CO in the airflow is subjected to three-way catalytic oxidation treatment by using the CO elimination coating on a plurality of flow channels one, the CO elimination coating on a plurality of elimination fan blades and the CO elimination coating on a plurality of flow channels two in turn, so as to realize efficient elimination of CO in the airflow;

[0049] Meanwhile, the third CO sensor collects the CO concentration signal three of the airflow after the CO elimination treatment in real time and sends it to the controller. The controller obtains the CO concentration data three according to the CO concentration signal three and compares the CO concentration data three with the CO safety concentration threshold in real time. When the CO concentration data three is higher than the CO safety concentration threshold, the second air volume control valve is controlled to open, the second exhaust fan is controlled to start working, the power of the fan is controlled to reduce, and the heating assembly is controlled to remain in the state of power off. The second exhaust fan provides negative pressure to guide the airflow in the CO elimination cavity to the airflow circulation cavity through the back circulation air outlet and discharge to the inlet side of the primary elimination component through the multiple guide plates, so that the airflow passes through the multiple-stage CO elimination assembly again to perform the circulating CO elimination operation in the way of airflow circulation. When the CO concentration data three is lower than or equal to the CO safety concentration threshold, the second air volume control valve is controlled to close, the second exhaust fan is controlled to stop, and the power of the fan is controlled to return to the normal elimination operation state. The airflow is discharged to the outside through the second air outlet. When the continuous circulating CO elimination operation lasts for a set cycle time, and the CO concentration data three is still higher than the CO safety concentration threshold, step three is directly performed.

[0050] Step three: elimination performance cycle regeneration

[0051] The fan is controlled to stop, the second air volume control valve is controlled to open, and the heating assembly is controlled to be powered on. The temperature sensor collects the temperature signal of the heating assembly in real time and sends it to the controller. The controller obtains the temperature data according to the temperature signal and compares the temperature data with the activation temperature threshold. When the temperature data is higher than or equal to the activation temperature threshold, the second exhaust fan is controlled to start working. The second exhaust fan provides negative pressure to guide the airflow in the CO elimination cavity to the airflow circulation cavity and heat the airflow by the heating assembly to form high-temperature airflow. The high-temperature airflow is discharged to the inlet side of the primary elimination component through the multiple guide plates. The high-temperature airflow passes through the multiple elimination fan blades on the rotating assembly, the multiple elimination fan blades on the primary elimination component, and the multiple elimination fan blades on the secondary elimination component in sequence. The high-temperature airflow activates the CO elimination coating in the flow channel one, the CO elimination coating on the elimination fan blades, and the CO elimination coating in the flow channel two to regenerate the CO elimination coating in the way of high-temperature airflow circulation. When the continuous activation regeneration process lasts for a set activation time, step two is performed again to continue the CO elimination operation.

[0052] Further, in order to facilitate the dust particles adhered to the filter screen body to be quickly removed by means of vibration, in step two, after the CO elimination operation continues for a set elimination time, the vibrator is controlled to start working for a set time, and the filter section of the filter screen body is vibrated to make the dust particles adhered to the filter screen body fall off by means of vibration and fall into the dust collecting chamber; after the vibrator stops working, the driving motor is controlled to start working to drive the driving drum to rotate for a set angle, and the used filter screen body is wound on the driving drum, and the unused filter screen body is arranged between the driving drum and the driven drum.

[0053] The application proposes a method of using chemical coating catalytic coating, coating the catalytic coating for CO elimination on the surfaces of several flow channels one on the primary elimination element, the surfaces of several flow channels two on the secondary elimination element and the surfaces of multiple elimination fan blades on the rotating assembly, which can effectively improve the elimination effect and efficiency of CO in the airflow by using triple elimination when the airflow passes. At the same time, the linear electric push rod is used to provide driving force for the secondary elimination element during the CO elimination process, and the pair of matched rack and pinion gears are used to drive the primary elimination element to move reciprocally and drive the multiple rotating assemblies to rotate, which can form a gas disturbance space between the primary elimination element and the secondary elimination element, and then it is beneficial to change the direction of the airflow by disturbance, so that the airflow can better contact the CO elimination coating on each position of the flow channel one, the CO elimination coating on each position of the flow channel two and the CO elimination coating on each elimination fan blade, and the time of airflow passing can be effectively prolonged, so the elimination effect of CO in the airflow can be significantly improved. The flow uniformizing plate is used to change the speed and direction of the airflow, which can make the airflow pass through the particle filter and the air dehumidification module uniformly, so that each part of the particle filter and the air dehumidification module can be fully utilized, and the wind resistance can be effectively reduced, which is beneficial to ensure the CO elimination efficiency. For the airflow flowing through the smoke dust filtering and dehumidification cabin, the CO concentration data one at the inlet side and the CO concentration data two at the outlet side are compared with the CO processing lower threshold value, which can facilitate the judgment of whether the current CO concentration in the airflow is high. When the current CO concentration in the airflow is low, the first air volume control valve is directly opened and the first exhaust fan is started, so that the filtered and dried airflow can be directly introduced to the outside of the smoke dust filtering and dehumidification cabin through the first air outlet. This is beneficial to avoid the waste of CO elimination resources, and significantly improves the flexibility and intelligence of the CO elimination operation. For the airflow on the outlet side of the multi-stage CO elimination cabin, the CO concentration data three is compared with the CO safety concentration threshold value, which can effectively monitor the current CO elimination effect. When the CO concentration data three of the airflow passing through the multi-stage CO elimination cabin is high, the airflow can be circulated in the CO elimination cavity and the airflow circulation cavity under the condition that the second air volume control valve is opened and the second exhaust fan is started, so that the circulation type CO elimination operation can be carried out by airflow circulation, which can effectively ensure the elimination effect of CO. When the elimination effect of CO cannot be improved by airflow circulation, the fan is closed and the circulating airflow is heated by the heating assembly to form a high-temperature airflow, which can realize the activation and regeneration of each elimination element, and can realize the effect of desorption of toxic substances on the surface of the flow channel and the surface of the elimination fan blade, and effectively improve the regeneration level of the elimination performance of each elimination element, which achieves the effect of repeated use of the elimination element.

[0054] The method has simple implementation process, high intelligent degree, good safety performance, and the ability of continuous CO elimination, can efficiently eliminate the CO generated in the blasting process, and can simultaneously remove part of dust particles in the gas flow, which is beneficial to reduce the pollution degree of the blasting operation to the environment. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 is a structural schematic diagram of the application;

[0056] Figure 2 is a structural schematic diagram of the filter single net in the filter net body in the application Figure 1 ;

[0057] Figure 3 is a structural schematic diagram of the filter single net in the filter net body in the application Figure 2 ;

[0058] Figure 4 is a structural schematic diagram of the filter single net in the filter net body in the application Figure 3 ;

[0059] Figure 5 is a structural schematic diagram of the external net box one in the application;

[0060] Figure 6 is a structural schematic diagram of the external net box two in the application;

[0061] Figure 7 is a structural schematic diagram of the internal stack of the several internal elimination units one in the external net box one in the application;

[0062] Figure 8 is a structural schematic diagram of the internal stack of the several internal elimination units two in the external net box two in the application;

[0063] Figure 9 is a structural schematic diagram of the several flow channels one in the internal elimination unit one in the application;

[0064] Figure 10 is a structural schematic diagram of the several flow channels two in the internal elimination unit two in the application;

[0065] Figure 11 is a structural schematic diagram of the rotating elimination piece in the application;

[0066] Figure 12 is a structural schematic diagram of the rotating assembly in the application;

[0067] Figure 13 is an assembly schematic diagram of the application in the tunnel;

[0068] Figure 14 is a flow chart of the application.

[0069] In the diagram: 1. Smoke and dust filtration and dehumidification chamber; 2. Multi-stage CO elimination chamber; 3. Airflow diversion device; 4. Chamber 1; 5. First air inlet; 6. Second air inlet; 7. Flow equalization plate; 8. Gas sensor; 9. First CO sensor; 10. First air outlet; 11. Particulate filter; 12. Ash collection chamber; 13. Air dehumidification module; 14. Active drum; 15. Driven drum; 16. Filter screen; 17. First dehumidification unit; 18. Second dehumidification unit; 19. Third dehumidification unit; 20. Second CO sensor; 21. First exhaust fan; 22. First airflow control valve; 23. Chamber 2; 24. Baffle; 25. Airflow circulation chamber; 26. CO elimination chamber; 27. Multi-stage CO elimination assembly; 28. Airflow diversion plate; 29. ​​Second airflow control valve; 30. Heating assembly; 31. Temperature sensor. 32. Second row fan; 33. Third CO sensor; 34. Primary elimination component; 35. Secondary elimination component; 36. Rotary elimination component; 37. External mesh box one; 38. Internal elimination unit one; 39. External mesh box two; 40. Slider one; 41. Slider two; 42. Rotating assembly; 43. Rack; 44. Impeller; 45. Elimination fan blades; 46. Rotating shaft; 47. Gear; 48. Telescopic drive mechanism; 49. Vertical bracket; 50. Linear electric push rod; 51. Fan; 52. Mounting base; 53. Drainage housing; 54. Second air outlet; 55. Automatic lifting platform; 56. Scissor lift frame; 57. Shock absorption assembly; 58. Traveling wheels; 59. Vibration assembly; 60. Support frame; 61. Vibrator; 62. Flow channel one; 63. Flow channel two; 64. Tunnel; 65. Internal elimination unit two. Detailed Implementation

[0070] The invention will now be further described with reference to the accompanying drawings.

[0071] like Figures 1 to 13 As shown, the present invention provides a multi-channel multi-stage circulating CO elimination system, including a dust filtration and dehumidification chamber 1, a multi-stage CO elimination chamber 2, and a diversion device 3;

[0072] The dust filtration and dehumidification chamber 1, the multi-stage CO elimination chamber 2, and the diversion device 3 are distributed sequentially along the left and right directions;

[0073] The dust filtration and dehumidification chamber 1 includes a chamber body 4, a flow equalization plate 7, a particulate filter 11, an air dehumidification module 13, a gas sensor 8, a first CO sensor 9, a second CO sensor 20, a first air volume control valve 22, and a first exhaust fan 21.

[0074] The cabin one 4 has an air inlet one and an air outlet one oppositely arranged at the left and right ends thereof, an air inlet two arranged at the upper left end thereof, and an air outlet two arranged at the upper right end thereof, and the air inlet one, the air inlet two, and the air outlet two are respectively a first air inlet 5, a second air inlet 6, and a first air outlet 10 of a multi-channel multi-stage circulating CO elimination system;

[0075] The flow equalizing plate 7, the particle filter 11, and the air dehumidification module 13 are distributed between the first air inlet and the first air outlet 10 and are sequentially and spacedly arranged in the inner cavity of the cabin one 4 from left to right;

[0076] The particle filter 11 comprises a driven drum 15, a driving drum 14, a filter screen body 16, and a driving motor. The driven drum 15 and the driving drum 14 are oppositely arranged at the top and the bottom of the cabin one 4 and are rotatably connected to the cabin one 4 through the rotating shafts at the respective shaft centers. The main body section of the filter screen body 16 is arranged around the outside of the driven drum 15, and the connecting section thereof is arranged around the outside of the driving drum 14. The driving motor is arranged outside the cabin one 4, and the output shaft thereof is connected to the rotating shaft at the center of the driving drum 14 for driving the driving drum 14 to rotate and moving the filter screen body 16. A downwardly recessed dust collecting chamber 12 is arranged at the bottom of the cabin one 4 corresponding to the position of the particle filter 11.

[0077] As a preferred option, the filter screen body 16 is composed of a plurality of layers of filter single screens sequentially and adjacently arranged, wherein the number of the filter single screens is 2-4 layers, and the pore diameters of the plurality of layers of filter single screens gradually decrease from left to right.

[0078] As a preferred option, the number of the particle filter 11 is 1-4, and the particle filters are sequentially and spacedly arranged.

[0079] The air dehumidification module 13 comprises a first dehumidification unit 17, a second dehumidification unit 18 and a third dehumidification unit 19; the first dehumidification unit 17 comprises a bearing cage one and desiccant particles one, the bearing cage one is adapted to the size of the inner cavity of the cabin one 4 in the four outer contour dimensions, the longitudinal section of the left and right ends is zigzag, the desiccant particles one are filled in the internal space of the bearing cage one; the second dehumidification unit 18 comprises a bearing cage two and desiccant particles two, the bearing cage two is adapted to the size of the inner cavity of the cabin one 4 in the four outer contour dimensions, the longitudinal section of the left and right ends is zigzag, the particle size of the desiccant particles two is smaller than that of the desiccant particles one, and the desiccant particles two are filled in the internal space of the bearing cage two; the third dehumidification unit 19 comprises a bearing cage three and desiccant particles three, the bearing cage three is adapted to the size of the inner cavity of the cabin one 4 in the four outer contour dimensions, the longitudinal section of the left and right ends is zigzag, the particle size of the desiccant particles three is smaller than that of the desiccant particles one, and the desiccant particles three are filled in the internal space of the bearing cage three; the first dehumidification unit 17, the second dehumidification unit 18 and the third dehumidification unit 19 are fixedly connected in sequence by flanges;

[0080] As a preferred, the thickness of the bearing cage one, the bearing cage two and the bearing cage three is 2-4cm; the desiccant particles one, the desiccant particles two and the desiccant particles three are one or both of silica or aluminosilicate, and the particle size of the desiccant particles one is 5-8mm, and the particle size of the desiccant particles two and the desiccant particles three is 3-5mm;

[0081] The gas sensor 8, the first CO sensor 9 and the second CO sensor 20 are all installed at the top of the inner cavity of the cabin one 4, and the gas sensor 8 and the first CO sensor 9 are located on the left side of the flow equalization plate 7, and the second CO sensor 20 is located on the right side of the air dehumidification module 13;

[0082] The first air volume control valve 22 is installed in the first air outlet 10 for opening or closing the first air outlet 10; the first exhaust fan 21 is installed outside the first air outlet 10;

[0083] The multi-stage CO elimination cabin 2 comprises a cabin two 23, a partition plate 24, a drainage plate 28, a second air volume control valve 29, a heating assembly 30, a temperature sensor 31, a second exhaust fan 32, a multi-stage CO elimination assembly 27, a third CO sensor 33 and a telescopic driving mechanism 48;

[0084] The opposite left and right ends of the cabin two 23 are provided with an air inlet three and an air outlet three, and the air inlet three is connected with the air outlet one of the cabin one 4;

[0085] The partition plate 24 is installed in the upper portion of the inner cavity of the cabin 2 3, and divides the inner cavity of the cabin 2 3 into the air flow circulation cavity 25 in the upper portion and the CO elimination cavity 26 in the lower portion; the front portion and the rear portion of the partition plate 24 are respectively provided with the front circulation air port and the rear circulation air port;

[0086] The plurality of drainage plates 28 are installed side by side in the front circulation air port; the upper portion and the lower portion of the flow channel formed between the adjacent two drainage plates 28 are in the shape of a horn;

[0087] The second air volume control valve 29 is installed in the rear circulation air port, and is used for opening or closing the rear circulation air port;

[0088] The heating assembly 30 is installed in the middle segment of the air flow circulation cavity 25; as a preferred, the heating temperature range of the heating assembly 30 is 50-200℃;

[0089] The temperature sensor 31 is installed on the heating assembly 30;

[0090] The second exhaust fan 32 is installed in the right portion of the air flow circulation cavity 25, and is located between the heating assembly 30 and the rear circulation air port;

[0091] The multi-stage CO elimination assembly 27 is arranged in the CO elimination cavity 26 of the cabin 2 3, and is located between the front circulation air port and the rear circulation air port; the multi-stage CO elimination assembly 27 comprises a bottom track, a first elimination part 34, a second elimination part 35 and a rotating elimination part 36; the bottom track is installed on the bottom of the CO elimination cavity 26, the length direction of the bottom track extends along the left-right direction, and the two ends of the length direction of the bottom track are provided with limiting blocks;

[0092] The sizes of the periphery of the first elimination part 34 and the second elimination part 35 are matched with the size of the inner cavity of the cabin 2 3; the first elimination part 34 comprises an external net box 1 37 and an internal elimination unit 1 38; the bottom of the external net box 1 37 is fixedly connected with a sliding block 1 40, and the external net box 1 37 is slidably installed on the left segment of the bottom track through the sliding block 1 40; a plurality of internal elimination units 1 38 are fixedly and stackingly installed in the inner cavity of the external net box 1 37, the internal elimination units 1 38 have flow channels 1 62 which are communicated in the left-right direction, and the flow channels 1 62 are coated with CO elimination coating; the second elimination part 35 comprises an external net box 2 39 and an internal elimination unit 2 65; the bottom of the external net box 2 39 is fixedly connected with a sliding block 2 41, and the external net box 2 39 is slidably installed on the right segment of the bottom track through the sliding block 2 41; a plurality of internal elimination units 2 65 are fixedly and stackingly installed in the inner cavity of the external net box 2 39, the internal elimination units 2 65 have flow channels 2 63 which are communicated in the left-right direction, and the flow channels 2 63 are coated with CO elimination coating;

[0093] As a kind of preferred, the CO elimination coating is prepared by the following method: first, the component to be coated is ultrasonically cleaned with 15% to 25% concentration of strong acid solution, then dried in vacuum drying environment at 50 to 80 DEG C for 12 to 16 hours, then CO catalyst and adhesive solution are mixed to form a suspension with mass ratio of 1.1 to 2:3 to 5, then the component to be coated is placed in the suspension and stirred under certain temperature conditions, and the operation is repeated multiple times to achieve coating of the coating; finally, after coating is completed, the component to be coated is dried at 100 to 150 DEG C for 10 to 16 hours, and then calcined at a temperature of 300 to 450 DEG C for 3 to 5 hours; wherein the main material of the CO catalyst is a transition metal oxide or a composite metal oxide prepared by hydrothermal method or coprecipitation method using one of manganese or cobalt, and the metal oxide is in powder form with a particle size of 0.01 to 0.1 mm.

[0094] The rotating elimination part 36 comprises three rotating assemblies 42 and three pairs of racks 43; the rotating assembly 42 comprises a bladed disc 44, a rotating shaft 46, an elimination vane 45 and a gear 47; the bladed disc 44 is uniformly provided with a plurality of insertion slots in the circumferential direction; the rotating shaft 46 is fixedly installed at the center of the bladed disc 44; the surfaces of a plurality of elimination vanes 45 are coated with a CO elimination coating, the number of which corresponds to the number of the plurality of insertion slots, and each of the plurality of elimination vanes 45 is inserted into a corresponding insertion slot; as a kind of preferred, the number of the insertion slots on the bladed disc 44 is 8 to 16. The gear 47 is coaxially fixedly sleeved on the outside of the rotating shaft 46 and located at the back side of the bladed disc 44; the three rotating assemblies 42 are arranged in the vertical direction and spaced apart from each other between the primary elimination part 34 and the secondary elimination part 35, and are rotatably connected to the inside of the cabin body two 23 through the respective rotating shafts 46; as a kind of preferred, the three rotating assemblies 42 can be staggered in the vertical direction; the three pairs of racks 43 correspond to the three rotating assemblies 42 respectively, and each pair of racks 43 is distributed in a staggered manner on the left and right sides and in a relative manner on the upper and lower sides of the outside of the corresponding gear 47, and is engaged with the gear 47 at the same time; wherein the left end of the upper rack 43 is fixedly connected with the right end of the external net cage one 37, and the right end extends to the right side of the gear 47; the right end of the lower rack 43 is fixedly connected with the left end of the external net cage two 39, and the left end extends to the left side of the gear 47.

[0095] As a kind of preferred, the number of the multi-stage CO elimination assembly 27 is 1 to 3, and is distributed in sequence and at intervals;

[0096] The third CO sensor 33 is installed at the top of the inner cavity of the cabin body two 23 and located at the right side of the secondary elimination part 35;

[0097] The telescopic driving mechanism 48 is arranged at the right side of the secondary elimination element 35, and the telescopic driving mechanism 48 comprises a vertical support 49 and linear electric push rods 50, the vertical support 49 is fixedly installed at the bottom of the inner cavity of the cabin two 23, and a plurality of linear electric push rods 50 are horizontally arranged between the secondary elimination element 35 and the vertical support 49, and the telescopic ends of the linear electric push rods 50 are connected with the right end of the external net cage two 39, and the fixed ends of the linear electric push rods 50 are fixedly connected with the vertical support 49.

[0098] The drainage device 3 comprises a drainage shell 53, a mounting seat 52 and a fan 51, the left end of the drainage shell 53 is provided with an air inlet four, the right end of the drainage shell 53 is provided with an air outlet four, and the air inlet four is connected with the air outlet three of the cabin two 23; the fan 51 is fixedly installed in the inner cavity of the drainage shell 53 through the mounting seat 52, and the air outlet section of the fan 51 is connected with the air outlet four and is connected with the second air outlet 54 of the multi-channel multi-stage circulating CO elimination system.

[0099] As a preferred, the cabin one 4, the cabin two 23 and the drainage shell 53 are all made of corrosion-resistant stainless steel material, and the thickness is 2-3mm.

[0100] In order to conveniently adjust the working height, an automatic lifting platform 55 is further arranged, the automatic lifting platform 55 comprises a damping assembly 57, a scissor lifting frame 56 and a lifting hydraulic cylinder.

[0101] The scissor lifting frame 56 is arranged below the multi-stage CO elimination cabin 2, the top end of the scissor lifting frame 56 is connected with the bottom of the multi-stage CO elimination cabin 2 through a plurality of damping assemblies 57, and a plurality of pairs of walking wheels 58 are arranged at the bottom end of the scissor lifting frame 56; the lifting hydraulic cylinder is arranged in the scissor lifting frame 56, and is used for driving the scissor lifting frame 56 to perform lifting action through telescopic action.

[0102] The particle filter 11 further comprises a vibration assembly 59, the vibration assembly 59 comprises a support frame 60 and a vibrator 61, the support frame 60 is installed at the left side of the main driving drum 14, the left end of the vibrator 61 is fixedly connected with the right end of the support frame 60, and the right end of the vibrator 61 is in contact with the filter screen body 16.

[0103] In order to realize full automation of the CO elimination operation, a controller is further arranged, the controller is connected with the gas sensor 8, the first CO sensor 9, the second CO sensor 20, the temperature sensor 31, the third CO sensor 33, the first air volume control valve 22, the first exhaust fan 21, the driving motor, the vibrator 61, the second air volume control valve 29, the heating assembly 30, the second exhaust fan 32, the linear electric push rod 50 and the fan 51.

[0104] In order to make the gas flow contact with the surface of the flow channel more fully, so as to effectively improve the CO elimination effect, the cross section of the flow channel 62 and the flow channel 63 is rectangular, and is continuously bent; in order to make the gas flow contact with the surface of the elimination fan more fully, so as to effectively improve the CO elimination effect, the elimination fan 45 is continuously sawtooth-shaped, and a plurality of round holes are arranged on the surface of the elimination fan.

[0105] In order to improve the flow effect of the gas flow, and at the same time, effectively reduce the cost, the flow plate 7 is a honeycomb structure, which is made of flame-retardant plastic material, and the thickness is 3-6 cm.

[0106] In order to avoid the large particles into the elimination system, so as to avoid the situation of blocking or reducing the CO elimination effect, the first air inlet 5 is located at the center of the left end of the cabin body 4, and the cross section is square, and a stainless steel protective filter screen is arranged in the first air inlet 5, which is used for preventing the large particles from entering the inside of the smoke filtering and dehumidifying cabin 1; the second air inlet 6 is rectangular.

[0107] In order to ensure that the connection position has good air tightness, the flame-retardant sealing gasket is arranged around the connection between the first dehumidifying unit 17 and the second dehumidifying unit 18, and the connection between the second dehumidifying unit 18 and the third dehumidifying unit 19.

[0108] In the present application, the flow uniformizing plate is arranged in the smoke dust filtering cabin, which can effectively change the speed and direction of the incoming airflow, so that the airflow can flow more uniformly through the particle filtering device and the air dehumidifying module. On the one hand, each part of the filtering screen body and each part of the air dehumidifying module can be fully utilized, so that the dust particles in the airflow can be filtered more efficiently and the airflow can be dried more efficiently. On the other hand, the resistance of the airflow can be effectively reduced, thereby ensuring the elimination efficiency of CO. For the particle filtering device, the winding action of the filtering screen body is performed by the driving drum and the driven drum, which can adjust the different sections of the filtering screen body online. In this way, the unused section of the filtering screen body can be adjusted to the dust removal position in time, thereby effectively ensuring the filtering effect of the dust particles in the airflow. The ash collection chamber is arranged at the bottom of the first cabin corresponding to the position of the particle filtering device, which can facilitate the collection of dust particles falling from the filtering screen body. The air dehumidifying module is composed of three dehumidifying units arranged in sequence, which can effectively ensure the drying effect. The gas sensor and the first CO sensor are arranged at the air inlet side of the smoke dust filtering cabin, which can facilitate the real-time acquisition of the gas concentration data and the CO concentration data one at the air inlet side. In this way, not only can the alarm action be performed in time when the gas concentration exceeds the standard, but also the CO concentration in the airflow at the air inlet side can be known in time, thereby determining whether the current airflow needs to be subjected to CO elimination operation. The second CO sensor is arranged at the air outlet side of the smoke dust filtering cabin, which can facilitate the real-time acquisition of the CO concentration data two at the air outlet side. In this way, the current airflow can be further determined whether to be subjected to CO elimination operation by combining the CO concentration data one at the air inlet side. On the basis of the first air inlet being arranged at the left end of the smoke dust filtering cabin, the second air inlet is also arranged at the upper part of the left end of the smoke dust filtering cabin, which can introduce the airflow through the two air inlets at the same time, thereby facilitating the flow of the incoming air, which can meet the needs of efficient CO elimination. The first air outlet is arranged at the upper part of the right end of the smoke dust filtering cabin, and the first air volume control valve and the first exhaust fan are installed therein, which can facilitate the control of the opening and closing of the first air outlet through the first air volume control valve, and the negative pressure for external drainage can be provided by the first exhaust fan. In this way, when the CO concentration data one and two are both low and do not need to be subjected to CO elimination treatment, the first air volume control valve can be directly opened and the first exhaust fan can be controlled to start, thereby the airflow after filtering and drying can be directly introduced to the outside of the smoke dust filtering cabin, thereby avoiding the waste of CO elimination resources. The multiple-stage CO elimination cabin is separated into the airflow circulation cavity and the CO elimination cavity by the partition plate, and the front circulation air inlet and the rear circulation air inlet are arranged at the front and rear parts of the partition plate, respectively. In this way, the CO elimination cavity can be used as the main cavity for CO elimination operation, and the airflow circulation cavity can be used as the auxiliary cavity to provide a circulation path.The plurality of flow guide plates are installed in the front circulating air port, the second air volume control valve is installed in the rear circulating air port, and the second exhaust fan is installed in the air flow circulating cavity, so that the air flow can circulate through the air flow circulating cavity and the CO elimination cavity when the second air volume control valve is opened and the second exhaust fan is started, and the air flow can pass through the multi-stage CO elimination assembly multiple times through the circulating flow mode when the elimination effect is not ideal after the air flow passes through the CO elimination cavity once, thereby effectively improving the CO elimination effect. The bottom track is arranged at the bottom of the CO elimination cavity, and the first elimination element and the second elimination element are slidably assembled at the left and right parts of the bottom track, respectively, and the rotating elimination element is arranged between the first and second elimination elements, so that the three purification operations of the CO can be realized through the first elimination element, the rotating elimination element and the second elimination element, thereby effectively improving the CO elimination effect and efficiency. On this basis, the three gears on the three rotating assemblies interact with the first and second elimination elements through the three pairs of racks, so that the relative or opposite movement between the first and second elimination elements can drive the three rotating elements to rotate, thereby forming a gas disturbance space with disturbed air flow between the first and second elimination elements through the rotating action, which is conducive to prolonging the time of the air flow passing through the multi-stage CO elimination assembly, thereby facilitating the air flow to fully contact the CO elimination layer coated on each elimination element, facilitating more sufficient catalytic oxidation reaction, and effectively improving the CO elimination effect and efficiency. The telescopic driving mechanism located at the air outlet side is connected with the second elimination element, which can automatically drive the second elimination element to move reciprocally through the linear electric push rod, thereby synchronously driving the first elimination element to move reciprocally and driving the three rotating assemblies in the rotating elimination element to rotate. The third CO sensor is arranged at the air outlet side of the multi-stage CO elimination cabin, which can obtain CO concentration data three in real time, so that the elimination effect of the CO in the current air flow can be judged according to the CO concentration data three, and the elimination effect can be improved in time through the circulating CO elimination operation when the CO elimination effect is poor, so as to effectively eliminate the CO. The heating assembly and the temperature sensor are installed in the air flow circulating cavity, so that the CO elimination coating in each elimination element can be activated and regenerated through the high-temperature air flow generated by the heating assembly when the elimination capacity of the CO elimination coating is weakened, thereby realizing the purpose of repeated use of each elimination element. The fan is installed in the flow guide device, which can provide a flow guide negative pressure through the fan, and the size of the flow guide negative pressure can be controlled through the control of the power of the fan, so that the controllable traction power can be provided for the air flow passing through the smoke dust filtering and dehumidifying cabin and the multi-stage CO elimination cabin, thereby ensuring the continuity, controllability and stability of the CO elimination operation.

[0109] The application realizes negative pressure control through the drainage device, attracts smoke flow into the inside of the elimination system, and then carries out dehumidification treatment through particle filtration, realizes three purification of the air flow through the primary elimination component, the rotating elimination component and the secondary elimination component, and can realize continuous CO elimination operation. The system has reasonable structure, low resistance and high efficiency, flexible and controllable CO elimination process, and ideal CO elimination effect, can realize multi-stage elimination of CO toxic and harmful gas in blasting operation, can significantly improve the elimination efficiency, and can ensure the life and health safety of construction personnel through the way of improving the air quality of construction environment.

[0110] As shown in Figure 14 The application also provides a multi-channel multi-stage circulation CO elimination method, which adopts a multi-channel multi-stage circulation CO elimination system and comprises the following steps.

[0111] Step one: assembly of the multi-channel multi-stage circulation CO elimination system and adjustment of the operation position;

[0112] S11: sequentially seal and connect the smoke dust filtration and dehumidification cabin 1, the multi-stage CO elimination cabin 2 and the drainage device 3, install the automatic lifting platform 55 at the bottom of the multi-stage CO elimination cabin 2, and form the multi-channel multi-stage circulation CO elimination system;

[0113] S12: carry out air flow sealing property test of the multi-channel multi-stage circulation CO elimination system for a set test time, test the air tightness of the whole multi-channel multi-stage circulation CO elimination system, and perform S13 after the air tightness meets the requirements;

[0114] S13: move the multi-channel multi-stage circulation CO elimination system to the designated elimination position in the tunnel 64 where blasting operation is to be carried out, and fix the position of the walking wheel 58 to prevent shaking or movement during the elimination operation;

[0115] S14: determine the elimination operation horizontal height according to the cross-sectional height of the tunnel 64, control the extension and retraction of the lifting hydraulic cylinder, and lift the smoke dust filtration and dehumidification cabin 1, the multi-stage CO elimination cabin 2 and the drainage device 3 to the predetermined elimination operation horizontal height through the scissor lifting frame 56;

[0116] Step two: CO elimination operation;

[0117] The first air volume control valve 22 and the second air volume control valve 29 are kept in the closed state, the second air volume control valve 29 and the second exhaust fan 32 are kept in the closed state; a time is set before the blasting operation starts, the blower 51 is controlled to start working, the blower 51 is used to provide a drainage negative pressure, at the same time, the plurality of linear electric push rods 500 are controlled to slowly and periodically perform reciprocating extension and contraction actions, the secondary elimination part 35 is driven to reciprocate in the left-right direction, the three rotating assemblies 42 in the rotating elimination part 36 are driven to reciprocatingly rotate through the pair of matched racks 43, and the primary elimination part 34 is driven to reciprocate in the left-right direction, so as to form a gas disturbance space between the primary elimination part 34 and the secondary elimination part 35, and the disturbance force in the gas disturbance space is weaker than the drainage negative pressure;

[0118] At the same time, the gas concentration signal in the airflow before dehumidification is collected in real time by the gas sensor 8 and transmitted to the controller, the CO concentration signal one in the airflow before dehumidification is collected in real time by the first CO sensor 9 and transmitted to the controller, and the controller obtains the gas concentration data and the CO concentration data one of the airflow before dehumidification according to the gas concentration signal and the CO concentration signal one respectively.

[0119] After the blasting operation starts, the airflow enters the smoke dust filtering and dehumidifying cabin 1 through the first air inlet 5 under the action of the drainage negative pressure, and then passes through the flow uniformizing plate 7, the particle filter 11 and the air dehumidification module 13, in this process, the flow uniformizing plate 7 is used to change the speed and direction of the airflow, so that the airflow uniformly passes through the particle filter 11, the dust particles in the airflow are filtered by the filter screen body 16, and the airflow is dried by the air dehumidification module 13.

[0120] At the same time, the CO concentration signal two in the airflow after dehumidification is collected in real time by the second CO sensor 20 and transmitted to the controller, and the CO concentration data two of the airflow after dehumidification is obtained by the controller according to the CO concentration signal two.

[0121] The controller compares the CO concentration data one and the CO concentration data two with the CO treatment lower limit threshold value, when both the CO concentration data one and the CO concentration data two are lower than the CO treatment lower limit threshold value, it is determined that the current air flow does not need to be treated for CO elimination, and the first air volume control valve 22 is directly controlled to be opened, and the first exhaust fan 21 is controlled to be started to work, and the negative pressure is provided by the first exhaust fan 21, so that the dry air flow is directly guided to the outside of the smoke dust filtering and dehumidifying cabin 1 through the first air outlet 10, until the CO concentration data one is higher than or equal to the CO treatment lower limit threshold value, the first air volume control valve 22 is controlled to be closed, and the first exhaust fan 21 is controlled to be stopped, so that the dry treated air flow continues to pass through the multi-stage CO elimination assembly 27, in this process, the air flow enters into the gas disturbance space through the plurality of flow channels one 62 in the first-stage elimination component 34, changes the flow trajectory under the disturbance of the three rotating components 42 rotating to effectively prolong the time of passing through the gas disturbance space, and then flows out through the plurality of flow channels two 63 in the second-stage elimination component 35, at the same time, the CO in the air flow is subjected to triple catalytic oxidation treatment by the CO elimination coating on the plurality of flow channels one 62, the CO elimination coating on the plurality of elimination fan blades 45 and the CO elimination coating on the plurality of flow channels two 63 in sequence, so as to realize the efficient elimination of CO in the air flow;

[0122] At the same time, the CO concentration signal three of the air flow after the CO elimination treatment is collected by the third CO sensor 33 in real time and sent to the controller, the controller obtains the CO concentration data three according to the CO concentration signal three, and compares the CO concentration data three with the CO safety concentration threshold value in real time, when the CO concentration data three is higher than the CO safety concentration threshold value, the second air volume control valve 29 is controlled to be opened, the second exhaust fan 32 is controlled to be started to work, the power of the fan 51 is reduced, and the heating assembly 30 is kept in the state of being powered off, the negative pressure is provided by the second exhaust fan 32, so that the air flow in the CO elimination cavity 26 is guided to the air flow circulation cavity 25 through the rear circulation air outlet, and is discharged to the inlet side of the first-stage elimination component 34 through the plurality of guide plates 28, so that the air flow passes through the multi-stage CO elimination assembly 27 again to perform the circulating CO elimination operation by using the air flow circulation, and when the CO concentration data three is lower than or equal to the CO safety concentration threshold value, the second air volume control valve 29 is controlled to be closed, the second exhaust fan 32 is controlled to be stopped, the power of the fan 51 is restored to the normal elimination operation state, and the air flow is discharged to the outside through the second air outlet 54, when the continuous circulating CO elimination operation is performed to the set circulation time, and the CO concentration data three is still higher than the CO safety concentration threshold value, step three is directly performed;

[0123] Step three: elimination performance cycle regeneration;

[0124] The fan 51 is controlled to stop, at the same time, the second air volume control valve 29 is controlled to open, the heating assembly 30 is controlled to be powered on, at the same time, the temperature signal of the heating assembly 30 is collected in real time through the temperature sensor 31 and is sent to the controller, the temperature data is obtained by the controller according to the temperature signal, and the temperature data is compared with the activation temperature threshold value, when the temperature data is higher than or equal to the activation temperature threshold value, the second exhaust fan 32 is controlled to start working, the negative pressure is provided by using the second exhaust fan 32, the airflow in the CO elimination cavity 26 is introduced into the airflow circulation cavity 25, and the airflow is heated by using the heating assembly 30 to form high-temperature airflow, and then the high-temperature airflow is discharged to the inlet side of the primary elimination part 34 through the plurality of guide plates 28, so that the high-temperature airflow passes through the plurality of flow channels one 62 in the primary elimination part 34, the plurality of elimination fan blades 45 on the rotating assembly 42 and the plurality of flow channels two 63 in the secondary elimination part 35 in turn, and the CO elimination coating in the flow channel one 62, the CO elimination coating on the elimination fan blade 45 and the CO elimination coating in the flow channel two 63 are activated by using the high-temperature airflow, so that the activation and regeneration of the CO elimination coating are carried out in the circulation mode of the high-temperature airflow, and the activation and regeneration process is continued until the set activation time is reached, then step two is re-executed, and the CO elimination operation is continued.

[0125] In order to facilitate the dust particles attached to the filter screen body to fall off quickly by vibration, in step two, after the CO elimination operation continues for the set elimination time, the vibrator 61 is controlled to start working for a set time, and the vibration of the filter section of the filter screen body 16 is driven, so that the dust particles attached to the filter screen body 16 fall off by vibration and fall into the dust collecting chamber 12; after the vibrator 61 stops working, the driving motor is controlled to start working to drive the driving drum 14 to rotate by a set angle, so that the used filter screen body 16 is wound on the driving drum 14, and the unused filter screen body 16 is arranged between the driving drum 14 and the driven drum 15.

[0126] As a preferred, in step two, during the working of the fan 51, the rotating speed of the fan 51 is adjusted to adjust the air volume, so that the good CO elimination effect can be maintained.

[0127] The application proposes a method of using chemical coating catalytic coating, coating the catalytic coating for CO elimination on the surfaces of several flow channels one on the primary elimination element, the surfaces of several flow channels two on the secondary elimination element and the surfaces of multiple elimination fan blades on the rotating assembly, which can effectively improve the elimination effect and efficiency of CO in the airflow by using triple elimination when the airflow passes. At the same time, the linear electric push rod is used to provide driving force for the secondary elimination element during the CO elimination process, and the pair of matched rack and pinion gears are used to drive the primary elimination element to move reciprocally and drive the multiple rotating assemblies to rotate, which can form a gas disturbance space between the primary elimination element and the secondary elimination element, and then it is beneficial to change the direction of the airflow by disturbance, so that the airflow can better contact the CO elimination coating on each position of the flow channel one, the CO elimination coating on each position of the flow channel two and the CO elimination coating on each elimination fan blade, and the time of airflow passing can be effectively prolonged, so the elimination effect of CO in the airflow can be significantly improved. The flow uniformizing plate is used to change the speed and direction of the airflow, which can make the airflow pass through the particle filter and the air dehumidification module uniformly, so that each part of the particle filter and the air dehumidification module can be fully utilized, and the wind resistance can be effectively reduced, which is beneficial to ensure the CO elimination efficiency. For the airflow flowing through the smoke dust filtering and dehumidification cabin, the CO concentration data one at the inlet side and the CO concentration data two at the outlet side are compared with the CO processing lower threshold value, which can facilitate the judgment of whether the current CO concentration in the airflow is high. When the current CO concentration in the airflow is low, the first air volume control valve is directly opened and the first exhaust fan is started, so that the filtered and dried airflow can be directly introduced to the outside of the smoke dust filtering and dehumidification cabin through the first air outlet. This is beneficial to avoid the waste of CO elimination resources, and significantly improves the flexibility and intelligence of the CO elimination operation. For the airflow on the outlet side of the multi-stage CO elimination cabin, the CO concentration data three is compared with the CO safety concentration threshold value, which can effectively monitor the current CO elimination effect. When the CO concentration data three of the airflow passing through the multi-stage CO elimination cabin is high, the airflow can be circulated in the CO elimination cavity and the airflow circulation cavity under the condition that the second air volume control valve is opened and the second exhaust fan is started, so that the circulation type CO elimination operation can be carried out by airflow circulation, which can effectively ensure the elimination effect of CO. When the elimination effect of CO cannot be improved by airflow circulation, the fan is closed and the circulating airflow is heated by the heating assembly to form a high-temperature airflow, which can realize the activation and regeneration of each elimination element, and can realize the effect of desorption of toxic substances on the surface of the flow channel and the surface of the elimination fan blade, and effectively improve the regeneration level of the elimination performance of each elimination element, which achieves the effect of repeated use of the elimination element.

[0128] The method has simple implementation process, high intelligent degree, good safety performance, and the ability of continuous CO elimination, can efficiently eliminate the CO generated in the blasting process, and can simultaneously remove part of the dust particles in the gas flow, which is conducive to reducing the pollution degree of the blasting operation to the environment.

Claims

1. A multi-pass multi-stage CO2 removal system comprising a smoke dust filtration dehumidification cabin (1), characterized in that, It also comprises a multi-stage CO elimination cabin (2) and a flow guiding device (3); The smoke filtering and dehumidifying cabin (1), the multi-stage CO elimination cabin (2) and the flow guiding device (3) are sequentially arranged along the left-right direction; The smoke filtering and dehumidifying cabin (1) comprises a cabin body one (4), a flow equalizing plate (7), a particle filter (11), an air dehumidifying module (13), a gas sensor (8), a first CO sensor (9), a second CO sensor (20), a first air volume control valve (22) and a first exhaust fan (21); Opposite left and right ends of the cabin body one (4) are provided with an air inlet one and an air outlet one, the left end upper portion is provided with an air inlet two, and the right end upper portion is provided with an air outlet two, and the air inlet one, the air inlet two and the air outlet two are respectively a first air inlet (5), a second air inlet (6) and a first air outlet (10) of a multi-channel multi-stage circulating CO elimination system; The flow equalizing plate (7), the particle filter (11) and the air dehumidifying module (13) are arranged between the second air inlet (6) and the first air outlet (10) and are sequentially and spacedly installed in the inner cavity of the cabin body one (4) from left to right; The particle filter (11) comprises a driven drum (15), a driving drum (14), a filter screen body (16) and a driving motor, the driven drum (15) and the driving drum (14) are oppositely arranged at the top and the bottom of the cabin body one (4) and are rotatably connected with the cabin body one (4) through the rotating shafts at the respective shaft centers; the main body section of the filter screen body (16) is wound on the outside of the driven drum (15), and the connecting section is wound on the outside of the driving drum (14); the driving motor is installed on the outside of the cabin body one (4), the output shaft of the driving motor is connected with the rotating shaft at the center of the driving drum (14), for driving the driving drum (14) to rotate and driving the filter screen body (16) to move; a downwardly recessed dust collecting chamber (12) is arranged at the bottom of the cabin body one (4) corresponding to the position of the particle filter (11); The air dehumidification module (13) comprises a first dehumidification unit (17), a second dehumidification unit (18) and a third dehumidification unit (19); the first dehumidification unit (17) comprises a bearing cage one and desiccant particles one, the size of the outer contour of the bearing cage one is matched with the size of the inner cavity of the cabin one (4), the longitudinal section of the left and right ends of the bearing cage one is zigzag, and the desiccant particles one are filled in the internal space of the bearing cage one; the second dehumidification unit (18) comprises a bearing cage two and desiccant particles two, the size of the outer contour of the bearing cage two is matched with the size of the inner cavity of the cabin one (4), the longitudinal section of the left and right ends of the bearing cage two is zigzag, the particle size of the desiccant particles two is smaller than that of the desiccant particles one, and the desiccant particles two are filled in the internal space of the bearing cage two; the third dehumidification unit (19) comprises a bearing cage three and desiccant particles three, the size of the outer contour of the bearing cage three is matched with the size of the inner cavity of the cabin one (4), the longitudinal section of the left and right ends of the bearing cage three is zigzag, the particle size of the desiccant particles three is smaller than that of the desiccant particles one, and the desiccant particles three are filled in the internal space of the bearing cage three; the first dehumidification unit (17), the second dehumidification unit (18) and the third dehumidification unit (19) are fixedly connected in sequence through flanges; The gas sensor (8), the first CO sensor (9) and the second CO sensor (20) are all installed at the top of the inner cavity of the cabin one (4), and the gas sensor (8) and the first CO sensor (9) are located on the left side of the flow distribution plate (7), and the second CO sensor (20) is located on the right side of the air dehumidification module (13); The first air volume control valve (22) is installed in the first air outlet (10) and used for opening or closing the first air outlet (10); the first exhaust fan (21) is installed on the outside of the first air outlet (10); The multi-stage CO elimination cabin (2) comprises a cabin two (23), a partition plate (24), a flow guide plate (28), a second air volume control valve (29), a heating assembly (30), a temperature sensor (31), a second exhaust fan (32), a multi-stage CO elimination assembly (27), a third CO sensor (33) and a telescopic driving mechanism (48); Opposite left and right ends of the cabin two (23) are provided with an air inlet three and an air outlet three, and the air inlet three is connected with the air outlet one of the cabin one (4); The partition plate (24) is installed at the upper part of the inner cavity of the cabin two (23) and divides the inner cavity of the cabin two (23) into an air flow circulation cavity (25) located at the upper part and a CO elimination cavity (26) located at the lower part; the front part and the rear part of the partition plate (24) are respectively provided with a front circulation air port and a rear circulation air port; A plurality of flow guide plates (28) are installed side by side in the front circulation air port; The second air volume control valve (29) is installed in the rear circulation air port and used for opening or closing the rear circulation air port; The heating assembly (30) is installed at the middle segment of the air flow circulation cavity (25); The temperature sensor (31) is installed on the heating assembly (30); The second exhaust fan (32) is installed at the right part of the air flow circulation cavity (25) and between the heating assembly (30) and the rear circulation air outlet; The multi-stage CO eliminating assembly (27) is arranged in the CO eliminating cavity (26) of the cabin body two (23) and between the front circulation air outlet and the rear circulation air outlet; the multi-stage CO eliminating assembly (27) comprises a bottom track, a first eliminating part (34), a second eliminating part (35) and a rotating eliminating part (36); the bottom track is installed at the bottom of the CO eliminating cavity (26) and extends along the left-right direction, and the two ends of the bottom track in the length direction are provided with limiting blocks; The first eliminating part (34) and the second eliminating part (35) are matched with the size of the inner cavity of the cabin body two (23) in the outline; the first eliminating part (34) comprises an outer mesh box one (37) and an inner eliminating unit one (38); the bottom of the outer mesh box one (37) is fixedly connected with a sliding block one (40) and is slidably installed on the left segment of the bottom track through the sliding block one (40); a plurality of inner eliminating unit ones (38) are fixedly and stackedly installed in the inner cavity of the outer mesh box one (37) and have flow passages one (62) communicated in the left-right direction in the inner eliminating unit ones (38) and coated with CO eliminating coating in the flow passages one (62); the second eliminating part (35) comprises an outer mesh box two (39) and an inner eliminating unit two (65); the bottom of the outer mesh box two (39) is fixedly connected with a sliding block two (41) and is slidably installed on the right segment of the bottom track through the sliding block two (41); a plurality of inner eliminating unit twos (65) are fixedly and stackedly installed in the inner cavity of the outer mesh box two (39) and have flow passages two (63) communicated in the left-right direction in the inner eliminating unit twos (65) and coated with CO eliminating coating in the flow passages two (63); The rotation eliminating element (36) comprises three rotating assemblies (42) and three pairs of racks (43); the rotating assembly (42) comprises a bladed disc (44), a rotating shaft (46), an eliminating fan blade (45) and a gear (47); the bladed disc (44) is uniformly provided with a plurality of slots in the circumferential direction; the rotating shaft (46) is fixedly installed at the center of the bladed disc (44); the surfaces of a plurality of eliminating fan blades (45) are coated with a CO eliminating coating, the number of the plurality of eliminating fan blades (45) corresponds to the number of the plurality of slots, and the plurality of eliminating fan blades (45) are correspondingly inserted into the corresponding slots; the gear (47) is coaxially fixedly sleeved on the outside of the rotating shaft (46) and located at the back side of the bladed disc (44); the three rotating assemblies (42) are arranged in the first eliminating element (34) and the second eliminating element (35) from top to bottom and rotatably connected to the inside of the cabin two (23) through the respective rotating shafts (46); the three pairs of racks (43) correspond to the three rotating assemblies (42) respectively, each pair of racks (43) is distributed in the left-right staggered manner and the up-down opposite manner on the outside of the corresponding gear (47) and simultaneously engaged with the gear (47); wherein the left end of the rack (43) on the upper side is fixedly connected with the right end of the external net cage one (37), the right end extends to the right side of the gear (47), and the right end of the rack (43) on the lower side is fixedly connected with the left end of the external net cage two (39), and the left end extends to the left side of the gear (47); The third CO sensor (33) is installed at the top of the inner cavity of the cabin two (23) and located at the right side of the second eliminating element (35); The telescopic driving mechanism (48) is arranged at the right side of the second eliminating element (35), the telescopic driving mechanism (48) comprises a vertical support (49) and a linear electric push rod (50), the vertical support (49) is fixedly installed at the bottom of the inner cavity of the cabin two (23), a plurality of linear electric push rods (50) are horizontally arranged between the second eliminating element (35) and the vertical support (49), the telescopic end of the linear electric push rod (50) is connected with the right end of the external net cage two (39), and the fixed end of the linear electric push rod (50) is fixedly connected with the vertical support (49); The drainage device (3) comprises a drainage shell (53), a mounting seat (52) and a fan (51), the left end of the drainage shell (53) is provided with an air inlet four, the right end is provided with an air outlet four, and the air inlet four is connected with the air outlet three of the cabin two (23); the fan (51) is fixedly installed in the inner cavity of the drainage shell (53) through the mounting seat (52), and the air outlet section thereof passes out to the right end of the drainage shell (53) through the air outlet four and serves as a second air outlet (54) of the multi-channel multi-stage circulating CO eliminating system.

2. A multi-pass, multi-stage recycle CO2 removal system according to claim 1, wherein, Further comprising an automatic lifting platform (55), the automatic lifting platform (55) comprises a shock absorbing assembly (57), a scissor lifting frame (56) and a lifting hydraulic cylinder. The scissor lift (56) is arranged below the multi-stage CO elimination cabin (2), the top end of which is connected with the bottom of the multi-stage CO elimination cabin (2) through a plurality of shock absorption assemblies (57), and the bottom end is provided with a plurality of pairs of walking wheels (58); the lifting hydraulic cylinder is arranged in the interior of the scissor lift (56) and is used for driving the scissor lift (56) to perform lifting action through telescopic action.

3. A multi-pass, multi-stage recycle CO2 removal system according to claim 1 or 2, characterized by, The particle filter (11) further comprises a vibration assembly (59), the vibration assembly (59) comprising a support frame (60) and a vibrator (61), the support frame (60) being mounted on the left side of the main driving drum (14), the left end of the vibrator (61) being fixedly connected with the right end of the support frame (60), and the right end of the vibrator (61) being in contact with the filter screen body (16).

4. A multi-pass, multi-stage recycle CO2 removal system according to claim 3, wherein, Further comprising a controller connected with the gas sensor (8), the first CO sensor (9), the second CO sensor (20), the temperature sensor (31), the third CO sensor (33), the first air volume control valve (22), the first exhaust fan (21), the driving motor, the vibrator (61), the second air volume control valve (29), the heating assembly (30), the second exhaust fan (32), the linear electric push rod (50) and the fan (51) respectively.

5. A multi-pass, multi-stage recycle CO2 removal system according to claim 4, wherein, The cross sections of the flow channel one (62) and the flow channel two (63) are all rectangular and continuously bent; the elimination fan blades (45) are continuously sawtooth-shaped, and a plurality of round holes are formed in the blades.

6. A multi-pass, multi-stage recycle CO2 removal system according to claim 5, wherein, The flow equalizing plate (7) is in a honeycomb structure and is made of flame-retardant plastic material, and the thickness is 3-6 cm.

7. A multi-pass, multi-stage recycle CO2 removal system according to claim 6, wherein, The first air inlet (5) is located in the central area of the left end of the cabin one (4) and has a square cross section, and a stainless steel protective filter screen is arranged in the first air inlet (5), which is used for preventing large particles from entering the interior of the smoke dust filtering and dehumidifying cabin (1); the second air inlet (6) is rectangular.

8. A multi-pass, multi-stage recycle CO2 removal system according to claim 7, wherein, Flame-retardant sealing pads are arranged around the connection between the first dehumidifying unit (17) and the second dehumidifying unit (18) and around the connection between the second dehumidifying unit (18) and the third dehumidifying unit (19).

9. A multi-pass multi-stage CO2 removal method using a multi-pass multi-stage CO2 removal system according to any one of claims 1 to 8, characterized in that, The steps include: Step one: assembly and operation position adjustment of the multi-channel multi-stage circulating CO elimination system; S11: sequentially seal and connect the smoke dust filtering and dehumidifying cabin (1), the multi-stage CO elimination cabin (2) and the drainage device (3), install the automatic lifting platform (55) at the bottom of the multi-stage CO elimination cabin (2), and form the multi-channel multi-stage circulating CO elimination system; S12: perform wind flow sealing property test of the multi-channel multi-stage circulating CO elimination system for a set test time, to test the air tightness of the whole multi-channel multi-stage circulating CO elimination system, and perform S13 after the air tightness meets the requirements; S13: move the multi-channel multi-stage circulating CO elimination system to a designated elimination position in the pre-blasting operation tunnel (64), and fix the position of the walking wheels (58), to prevent shaking or movement during the elimination operation. S14: According to the cross-sectional height of the tunnel (64), the elimination operation level height is determined, and the lifting hydraulic cylinder is controlled to extend and retract, and the smoke filtering and dehumidifying cabin (1), the multi-stage CO elimination cabin (2) and the drainage device (3) are lifted to the predetermined elimination operation level height through the scissor lifting frame (56); Step two: CO elimination operation; The first air volume control valve (22) and the second air volume control valve (29) are kept closed, and the second air volume control valve (29) and the second exhaust fan (32) are kept closed; Before the blasting operation starts, set the time, control the fan (51) to start working, use the fan (51) to provide drainage negative pressure, at the same time, control the multiple linear electric push rods (50) to slowly and periodically reciprocate, drive the secondary elimination part (35) to reciprocate in the left and right directions, and through the matched rack (43), drive the three rotating assemblies (42) in the rotating elimination part (36) to reciprocate, and synchronously drive the primary elimination part (34) to reciprocate in the left and right directions, so as to form a gas disturbance space with a disturbance force weaker than the drainage negative pressure between the primary elimination part (34) and the secondary elimination part (35); At the same time, the gas concentration signal in the airflow before dehumidification is collected by the gas sensor (8) in real time and sent to the controller; The CO concentration signal one in the airflow before dehumidification is collected by the first CO sensor (9) in real time and sent to the controller; The controller obtains the gas concentration data and the CO concentration data one of the airflow before dehumidification according to the gas concentration signal and the CO concentration signal one respectively; After the blasting operation starts, the airflow enters the smoke filtering and dehumidifying cabin (1) through the first air inlet (5) under the action of the drainage negative pressure, and then passes through the flow distribution plate (7), the particle filter (11) and the air dehumidification module (13), in this process, the flow distribution plate (7) changes the speed and direction of the airflow, so that the airflow passes through the particle filter (11) uniformly, and the filter screen body (16) filters out the dust particles in the airflow, and the air dehumidification module (13) dries the airflow; At the same time, the CO concentration signal two in the airflow after dehumidification is collected by the second CO sensor (20) in real time and sent to the controller, and the controller obtains the CO concentration data two of the airflow after dehumidification according to the CO concentration signal two; The controller compares the CO concentration data one and the CO concentration data two with the CO processing lower limit threshold value, and when both the CO concentration data one and the CO concentration data two are lower than the CO processing lower limit threshold value, it is determined that the current air flow does not need to be subjected to CO elimination processing, and the first air volume control valve (22) is directly controlled to be opened, and the first exhaust fan (21) is controlled to be started to work, and the negative pressure is provided by the first exhaust fan (21), and the dry air flow is directly introduced to the outside of the smoke dust filtering and dehumidifying cabin (1) through the first air outlet (10), and when the CO concentration data one is higher than or equal to the CO processing lower limit threshold value, the first air volume control valve (22) is controlled to be closed, and the first exhaust fan (21) is controlled to be stopped, and the dry processed air flow continues to pass through the multi-stage CO elimination assembly (27), and in this process, the air flow enters the gas disturbance space through a plurality of flow channels one (62) in the first-stage elimination component (34), changes the flow trajectory under the disturbance of the three rotating assemblies (42) rotating to effectively prolong the time of passing through the gas disturbance space, and then flows out through a plurality of flow channels two (63) in the second-stage elimination component (35), and at the same time, the CO in the air flow is subjected to three-way catalytic oxidation processing by the CO elimination coating on the flow channel one (62), the CO elimination coating on the plurality of elimination fan blades (45) and the CO elimination coating on the flow channel two (63) in sequence, so as to realize high-efficiency elimination of CO in the air flow; At the same time, the CO concentration signal three of the air flow after the CO elimination processing is collected by the third CO sensor (33) in real time and sent to the controller, the CO concentration data three is obtained by the controller according to the CO concentration signal three, and the CO concentration data three is compared with the CO safety concentration threshold value in real time, when the CO concentration data three is higher than the CO safety concentration threshold value, the second air volume control valve (29) is controlled to be opened, the second exhaust fan (32) is controlled to be started to work, the power of the fan (51) is reduced, and the state of the heating assembly (30) being powered off is maintained, the negative pressure is provided by the second exhaust fan (32), the air flow in the CO elimination cavity (26) is introduced to the air flow circulation cavity (25) through the rear circulation air outlet, and is discharged to the inlet side of the first-stage elimination component (34) through a plurality of introduction plates (28), so that the air flow passes through the multi-stage CO elimination assembly (27) again, and the circulating CO elimination operation is performed in the form of air flow circulation, and when the CO concentration data three is lower than or equal to the CO safety concentration threshold value, the second air volume control valve (29) is controlled to be closed, the second exhaust fan (32) is controlled to be stopped, and the power of the fan (51) is restored to the normal elimination operation state, so that the air flow is discharged to the outside through the second air outlet (54), and when the continuous circulating CO elimination operation lasts for a set circulation time, the CO concentration data three is still higher than the CO safety concentration threshold value, and step three is directly executed; Step three: elimination performance cycle regeneration; The fan (51) is stopped, and the second air volume control valve (29) is opened, and the heating assembly (30) is powered on. The temperature signal of the heating assembly (30) is collected in real time by the temperature sensor (31) and sent to the controller. The controller obtains temperature data according to the temperature signal, and compares the temperature data with the activation temperature threshold value. When the temperature data is higher than or equal to the activation temperature threshold value, the second exhaust fan (32) is started to work. The second exhaust fan (32) provides negative pressure, and the airflow in the CO elimination cavity (26) is introduced into the airflow circulation cavity (25). The heating assembly (30) heats the airflow to form a high-temperature airflow, which is discharged to the inlet side of the primary elimination component (34) through the multiple guide plates (28). The high-temperature airflow passes through the flow channel one (62) in the primary elimination component (34), the multiple elimination fan blades (45) on the rotating assembly (42), and the flow channel two (63) in the secondary elimination component (35) in turn. The high-temperature airflow activates the CO elimination coating in the flow channel one (62), the CO elimination coating on the elimination fan blade (45), and the CO elimination coating in the flow channel two (63) to activate and regenerate the CO elimination coating in a circulating manner. After the activation and regeneration process continues for a set activation time, step two is executed again to continue the CO elimination operation.

10. A multi-pass, multi-stage recycle CO2 removal method according to claim 9, wherein, In step two, after the CO elimination operation continues for a set elimination time, the vibrator (61) is started to work for a set time, and the filter section of the filter net body (16) is vibrated to make the dust particles attached to the filter net body (16) fall off and fall into the dust collecting chamber (12). After the vibrator (61) stops working, the driving motor is started to drive the driving drum (14) to rotate by a set angle, and the used filter net body (16) is wound on the driving drum (14), and the unused filter net body (16) is placed between the driving drum (14) and the driven drum (15).

Images