Dynamic monitoring device and method for VOCs waste gas

Abstract

The invention discloses a VOCs waste gas dynamic monitoring device and method.The VOCs waste gas dynamic monitoring device comprises a monitoring box, a gas inlet fan, a pretreatment box and a monitor are arranged in the monitoring box, a gas inlet pipe is arranged at the gas inlet end of the gas inlet fan, the output end of the gas inlet fan communicates with the gas inlet end of the pretreatment box, and pretreatment liquid is stored in the pretreatment box; a plurality of rotatable pretreatment pipes are arranged in the pretreatment liquid, a plurality of air inlet holes are formed in the pretreatment pipes, the pretreatment pipes are communicated with the output end of the air inlet fan, a plurality of rotatable spraying pipes are arranged above the liquid level of the pretreatment liquid, a plurality of spraying holes are formed in the spraying pipes, and porous adsorption cotton for adsorption is arranged above the pretreatment box; and the exhaust end of the pretreatment box is communicated with the air inlet end of the monitor. Due to the design of pretreatment liquid, a spraying pipe and adsorption cotton in the pretreatment box, gas entering the monitor can be fully pretreated, particulate matter, water and the like in waste gas are effectively removed, damage to monitoring equipment is reduced, and the data monitoring accuracy of the monitor is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of waste gas monitoring, and particularly relates to a VOCs waste gas dynamic monitoring device and method. Background Art

[0002] In industrial production, such as chemical industry, pharmaceutical, printing, electronics and other industries, a large amount of VOCs waste gas will be discharged. These waste gases will not only cause air pollution, forming environmental problems such as acid rain and chemical smog, but also may cause damage to the human respiratory system, nervous system, etc. Long-term exposure to a high-concentration VOCs environment may even cause serious diseases such as cancer.

[0003] In order to effectively control VOCs emissions and achieve continuous improvement of environmental quality, it is particularly important to establish a scientific, efficient and accurate VOCs monitoring system. Currently, most use monitors to suck the waste gas into the monitor through an air pump for analysis and detection. However, in some special environments, in some waste gases, the impurity content is too high. If the waste gas is not pretreated to remove the impurities, the impurity particles will greatly affect the accuracy of the waste gas detection data, and the impurities are also likely to have a certain impact on the monitor equipment, increasing the failure rate of the equipment.

[0004] Therefore, research and improvement are carried out on the existing structure and deficiencies, and a VOCs waste gas dynamic monitoring device and method are provided, in order to achieve a more practical purpose. Summary of the Invention

[0005] Aiming at at least one problem in the prior art, an object of the present invention is to provide a VOCs waste gas dynamic monitoring device and method.

[0006] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0007] A VOCs waste gas dynamic monitoring device includes a monitoring box, in which an intake fan, a pretreatment box and a monitor are provided. An intake pipe is provided at the intake end of the intake fan, and the output end of the intake fan is communicated with the intake end of the pretreatment box. Pretreatment liquid is stored in the pretreatment box. A plurality of rotatable pretreatment pipes are provided in the pretreatment liquid. A plurality of intake holes are provided on the pretreatment pipes, and the pretreatment pipes are communicated with the output end of the intake fan. A plurality of rotatable spray pipes are provided above the liquid level of the pretreatment liquid. A plurality of spray holes are provided on the spray pipes. An adsorbent cotton in a porous shape for adsorption is provided above the pretreatment box, and the exhaust end of the pretreatment box is communicated with the intake end of the monitor.

[0008] Preferably, an air inlet disk fixedly connected and in a volute shape is arranged in the pretreatment box. An air inlet turbine is rotatably connected in the air inlet disk. A diversion pipe is arranged on one side of the air inlet disk and is communicated with the output end of the air inlet fan. A flow equalizing pipe rotatably and sealingly connected is arranged in the middle of the upper end of the air inlet disk. A plurality of through-type adjusting grooves are arranged on the side wall of the flow equalizing pipe. A rotating shaft rotatably connected is arranged between one end of the pretreatment pipe and the adjusting groove. A sealing ring which is used for sealing and has elasticity is arranged in the adjusting groove. The sealing ring is connected and sealed with the pretreatment pipe. An adjusting shaft fixedly connected with the air inlet disk is arranged in the flow equalizing pipe. A first reciprocating thread is arranged on the adjusting shaft. An adjusting ring plate is sleeved on the adjusting shaft. The adjusting ring plate is connected with the first reciprocating thread in a matching manner. A plurality of rotatably connected and telescopic connecting shafts are arranged on the outer side of the adjusting ring plate. The end of the connecting shaft is communicated with the air inlet end of the pretreatment pipe. The air inlet holes are all arranged on the same side of the corresponding pretreatment pipe. A one-way air inlet valve is arranged in the pretreatment pipe.

[0009] Preferably, a driving box fixedly connected is arranged at the bottom of the pretreatment box. A driving groove in a prismatic shape is arranged in the driving box. A driving plate slidably and sealingly connected is arranged in the driving groove. A plurality of first holes are arranged on the side wall of the driving groove. A one-way liquid inlet valve is arranged in the first hole. An air inlet shaft rotatably connected is arranged in the middle of the air inlet disk. The air inlet shaft is connected with the air inlet turbine. One end of the air inlet shaft passes through the driving box and the driving plate. A second reciprocating thread is arranged on the air inlet shaft. The air inlet shaft is connected with the driving plate through the second reciprocating thread. Central grooves communicated with each other are arranged in both the air inlet shaft and the adjusting shaft. The air inlet shaft and the adjusting shaft are rotatably and sealingly connected. A plurality of second holes communicated with the central groove are arranged on the side wall of the air inlet shaft located in the driving box. A one-way liquid outlet valve is arranged in the second hole. A transfer disk rotatably and sealingly connected is arranged at the upper end of the flow equalizing pipe. The adjusting rod is fixedly connected with the transfer disk. A transfer groove is arranged in the transfer disk. A communicating groove communicated with the central groove in the adjusting shaft is arranged between the transfer groove and the central groove in the adjusting shaft. The spray pipe is communicated with the transfer groove.

[0010] Preferably, a first filter screen for filtering is arranged at the water inlet end of the second hole. A scraping plate fixedly connected and used for removing impurities on the surface of the first filter screen is arranged at the bottom of the driving plate. A plurality of sedimentation grooves in an inverted frustum shape are arranged at the bottom of the driving groove. A pressure filtration groove is arranged at the bottom of the pretreatment box. A pressure filtration plate capable of moving up and down is arranged in the pressure filtration groove. The central groove at the bottom of the air inlet shaft is communicated with the pressure filtration groove. A one-way liquid discharge valve is arranged at the bottom of the central groove. A second filter screen is arranged at the communicating part between the central groove and the pressure filtration groove. A sludge discharge groove communicated with the pressure filtration groove is arranged at the bottom of the sedimentation groove. A one-way liquid inlet valve is arranged in the sludge discharge groove. A sealing plate which can be opened and closed and is used for selectively sealing the sludge discharge groove is further arranged in the sludge discharge groove.

[0011] Preferably, a rotatable pressure filter shaft is provided in the pressure filter tank. A third reciprocating thread is provided on the pressure filter shaft, and a reciprocating ring plate is connected to the third reciprocating thread in a matching manner. The pressure filter plate is connected to the reset ring plate. The pressure filter shaft and the bottom of the intake air shaft can be selectively connected. A third hole communicating with the central groove inside the intake air shaft is provided on the pressure filter shaft. The second filter screen is arranged at the inlet of the third hole, and the one-way liquid discharge valve is arranged in the third hole.

[0012] Preferably, the pressure filter plate comprises a plurality of pressure filter sub - plates. The pressure filter sub - plates are fan - shaped. The pressure filter sub - plates are rotatably connected to the reciprocating ring plate, and buffer rubber is provided at the edge of the pressure filter sub - plates. A support plate is provided at the bottom of the reciprocating ring plate, and a first hydraulic rod is provided on the support plate. The end of the first hydraulic rod is rotatably connected to the corresponding pressure filter sub - plate.

[0013] Preferably, a connecting groove for rotation and sealing connection with the intake air shaft is provided at the end of the pressure filter shaft. A pressing groove is provided on the side wall of the connecting groove. A pressing plate is provided in the pressing groove, and a second hydraulic rod for driving the pressing plate to move back and forth is provided in the pressing groove.

[0014] Preferably, a piston plate which is slidably and sealingly connected is provided in the transfer groove. A through - type liquid inlet hole is provided on the piston plate. A connecting hose communicating with the connecting groove is provided on one side of the liquid inlet hole. A return spring for driving the piston plate to automatically return to the initial position is provided in the transfer groove.

[0015] Preferably, a first net plate is fixedly connected in the pretreatment box. The adsorption cotton is fixedly installed at the bottom of the first net plate, and a second net plate is connected to the other end of the adsorption cotton. A plurality of synchronizing rods are fixedly connected to the bottom of the second net plate. One end of the synchronizing rod movably and sealingly passes through the transfer groove and is fixedly connected to the piston plate.

[0016] A method for dynamically monitoring VOCs waste gas, using the above - mentioned VOCs waste gas dynamic monitoring device, comprises the following steps:

[0017] S1 Start the intake air fan, so that the intake pipe sucks and conveys the waste gas into the pretreatment box;

[0018] S2 The waste gas enters the pretreatment box through the intake holes on the pretreatment pipe and contacts the pretreatment liquid in the pretreatment box. Through the rotation of the pretreatment pipe, the waste gas can fully contact the pretreatment liquid, and the impurities in the waste gas are adsorbed and separated;

[0019] S3 The waste gas passing through the pretreatment liquid contacts the pretreatment liquid sprayed out from the spray pipe during the rising process. Through the spraying method, the impurities in the waste gas are further removed;

[0020] Finally, the exhaust gas after spraying passes through the adsorption cotton, and the liquid in the exhaust gas is adsorbed and separated, and at this time, the pretreatment of the exhaust gas is completed;

[0021] After the exhaust gas is pretreated, it enters the monitor, and the gas is analyzed and detected by the monitor.

[0022] Compared with the prior art, the present invention has the following technical effects:

[0023] The design of the pretreatment liquid, the spray pipe and the adsorption cotton in the pretreatment box can fully pretreat the gas entering the monitor, effectively remove the particulate matter, moisture, etc. in the exhaust gas, reduce the damage to the monitoring equipment, improve the accuracy of the monitor for data monitoring, and reduce the failure rate of the equipment.

[0024] Utilize the reaction force generated by the intake air flow passing through the intake hole to drive the flow equalizing pipe to rotate, realizing the rotary intake of the pretreatment pipe. The cooperation of the first reciprocating thread and the adjusting ring plate enables the pretreatment pipe to rotate up and down around the rotation axis during the rotation process, so that the air flow entering through the intake hole on the pretreatment pipe can contact the pretreatment liquid more fully, improving the pretreatment efficiency of the exhaust gas;

[0025] The design of the intake turbine enables the air flow to drive the intake turbine to rotate when passing through the intake disc. Through the rotation of the intake turbine, the intake shaft is driven to rotate, and through the cooperation of the second reciprocating thread, the driving plate can reciprocate periodically. At the same time, under the cooperation of the one-way liquid inlet valve and the one-way liquid outlet valve, the driving box can continuously suck the pretreatment liquid at the bottom of the pretreatment box into the pretreatment box and convey it to the spray pipe through the pretreatment box, so that the pretreatment liquid can be in a spray shape in the pretreatment box. In this way, the gas just separated from the pretreatment liquid can still contact the spray-shaped pretreatment liquid during the rising process, further improving the pretreatment efficiency of the exhaust gas.

[0026] Referring to the following description and the accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the ways in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope thereby.

[0027] Features described and / or illustrated for one embodiment can be used in the same or similar way in one or more other embodiments, combined with the features in other embodiments, or replace the features in other embodiments.

[0028] It should be emphasized that the term "comprising / including" when used herein refers to the presence of features, whole things, steps or components, but does not exclude the presence or addition of one or more other features, whole things, steps or components. Description of the Drawings

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 Schematic three-dimensional structure diagram provided by the present invention.

[0031] Figure 2 Schematic three-dimensional connection structure diagram of the spray pipe, pretreatment pipe and adsorption cotton provided by the present invention.

[0032] Figure 3 Schematic front view sectional connection structure diagram of the pretreatment tank provided by the present invention.

[0033] Figure 4 Schematic front view sectional connection structure diagram of the flow equalizing pipe and the transfer disk provided by the present invention.

[0034] Figure 5 Schematic three-dimensional connection structure diagram of the air inlet disk and the air inlet turbine provided by the present invention.

[0035] Figure 6 Provided by the present invention Figure 3 Enlarged view of part A in

[0036] Figure 7 Schematic connection structure diagram of the filter pressing partition plate and the reset ring plate provided by the present invention.

[0037] Figure 8 Schematic sectional structure diagram of the connection groove and the pressing groove provided by the present invention.

[0038] Description of reference numerals in the figure: 1. Monitoring box; 11. Monitor; 12. Pretreatment box; 121. Filter press tank; 13. Monitoring pipe; 14. Intake fan; 15. Intake pipe; 2. Drive box; 21. First hole; 22. Drive plate; 221. Scraper; 23. Sedimentation tank; 24. Mud discharge tank; 3. Flow equalizing pipe; 31. Pretreatment pipe; 311. Intake hole; 32. Adjusting shaft; 321. Central groove; 33. Adjusting ring plate; 34. First reciprocating thread; 35. Adjusting groove; 36. Sealing ring; 37. Connecting shaft; 4. Intake disk; 41. Diversion pipe; 42. Intake turbine; 43. Intake shaft; 431. Second reciprocating thread; 432. Second hole; 433. First filter screen; 5. Adsorption cotton; 51. First mesh plate; 52. Synchronous rod; 53. Second mesh plate; 6. Adapter plate; 61. Spray pipe; 611. Spray hole; 62. Adapter groove; 63. Piston plate; 64. Return spring; 65. Connecting hose; 7. Filter press shaft; 70. Pressing groove; 701. Second hydraulic rod; 702. Pressing plate; 703. Connecting groove; 71. Third reciprocating thread; 72. Return ring plate; 73. Third hole; 74. Second filter screen; 75. Filter press plate; 751. Filter press sub-plate; 76. First hydraulic rod; 77. Buffer rubber. Detailed implementation mode

[0039] In order to enable those skilled in the art of the present technology to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0040] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can also be another intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be another intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manner.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific implementation manners and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0042] Example 1, please refer toFigure 1 , Figure 2 and Figure 3 , a VOCs waste gas dynamic monitoring device, comprising a monitoring box 1, wherein an intake fan 14, a pretreatment box 12 and a monitor 11 are arranged in the monitoring box 1. An intake pipe 15 is arranged at the intake end of the intake fan 14, and the output end of the intake fan 14 is communicated with the intake end of the pretreatment box 12. Pretreatment liquid is stored in the pretreatment box 12. A plurality of rotatable pretreatment pipes 31 are arranged in the pretreatment liquid. A plurality of intake holes 311 are arranged on the pretreatment pipe 31, and the pretreatment pipe 31 is communicated with the output end of the intake fan 14. A plurality of rotatable spray pipes 61 are arranged above the liquid level of the pretreatment liquid. A plurality of spray holes 611 are arranged on the spray pipe 61. A porous adsorption cotton 5 for adsorption is arranged above the pretreatment box 12, and the exhaust end of the pretreatment box 12 is communicated with the intake end of the monitor 11. A monitoring pipe 13 communicated with the monitor 11 is arranged at the upper end of the pretreatment box 12.

[0043] The design of the pretreatment liquid, the spray pipe 61 and the adsorption cotton 5 in the pretreatment box 12 can fully preprocess the gas entering the monitor 11, effectively remove particulate matters, moisture, etc. in the waste gas, reduce the damage to the monitoring equipment, and improve the accuracy of data monitoring by the monitor 11.

[0044] In this embodiment, please refer to Figure 2 , Figure 3 and Figure 4 , a volute-shaped intake disk 4 fixedly connected is arranged in the pretreatment box 12. A rotatably connected intake turbine 42 is arranged in the intake disk 4. A communicating guide pipe 41 is arranged on one side of the intake disk 4, and the guide pipe 41 is communicated with the output end of the intake fan 14. A rotatably and sealingly connected flow equalizing pipe 3 is arranged in the middle of the upper end of the intake disk 4. A plurality of through adjustment grooves 35 are arranged on the side wall of the flow equalizing pipe 3. A rotating shaft is rotatably connected between one end of the pretreatment pipe 31 and the adjustment groove 35. A sealing and elastic sealing ring 36 is arranged in the adjustment groove 35, and the sealing ring 36 is sealingly connected with the pretreatment pipe 31. An adjustment shaft 32 fixedly connected with the intake disk 4 is arranged in the flow equalizing pipe 3. A first reciprocating thread 34 is arranged on the adjustment shaft 32, and an adjustment ring plate 33 is sleeved on the adjustment shaft 32. The adjustment ring plate 33 is matched and connected with the first reciprocating thread 34. A plurality of rotatably connected and telescopic connecting shafts 37 are arranged on the outer side of the adjustment ring plate 33, and the end of the connecting shaft 37 is communicated with the intake end of the pretreatment pipe 31. The intake holes 311 are all arranged on the same side of the corresponding pretreatment pipe 31. A one-way intake valve is arranged in the pretreatment pipe 31.

[0045] By utilizing the reaction force generated by the intake air flow passing through the intake holes 311, the uniform flow pipe 3 is pushed to rotate, realizing the rotational intake of the pretreatment pipe 31. The cooperation between the first reciprocating thread 34 and the adjusting ring plate 33 enables the pretreatment pipe 31 to rotate around the rotation axis while also being able to move up and down during rotation. As a result, the air flow entering through the intake holes 311 on the pretreatment pipe 31 can come into contact with the pretreatment liquid more fully, improving the pretreatment efficiency of the waste gas.

[0046] In this embodiment, please refer to Figure 3 , Figure 4 and Figure 6 , a drive box 2 is fixedly connected to the bottom of the pretreatment box 12. A prismatic drive groove is provided in the drive box 2, and a driving plate 22 that slides and is hermetically connected is provided in the drive groove. A plurality of first holes 21 are provided on the side wall of the drive groove, and one-way liquid inlet valves are provided in the first holes 21. A rotatably connected intake shaft 43 is provided in the middle of the intake disk 4. The intake shaft 43 is connected to the intake turbine 42, and one end of the intake shaft 43 passes through the drive box 2 and the driving plate 22. A second reciprocating thread 431 is provided on the intake shaft 43, and the intake shaft 43 is connected to the driving plate 22 through the second reciprocating thread 431. Communication grooves 321 that are connected are provided in both the intake shaft 43 and the adjusting shaft 32, and the intake shaft 43 and the adjusting shaft 32 are rotatably and hermetically connected. A plurality of second holes 432 that are connected to the communication groove 321 are provided on the side wall of the intake shaft 43 located in the drive box 2, and one-way liquid outlet valves are provided in the second holes 432. A rotatably and hermetically connected adapter plate 6 is provided at the upper end of the uniform flow pipe 3. The adjusting rod is fixedly connected to the adapter plate 6. An adapter groove 62 is provided in the adapter plate 6, and a communication groove that is connected is provided between the adapter groove 62 and the communication groove 321 in the adjusting shaft 32. The spray pipe 61 is communicated with the adapter groove 62.

[0047] The design of the intake turbine 42 enables the air flow to drive the intake turbine 42 to rotate when passing through the intake disk 4. Through the rotation of the intake turbine 42, the intake shaft 43 is driven to rotate. And through the cooperation of the second reciprocating thread 431, the driving plate 22 can perform periodic reciprocating motion. At the same time, with the cooperation of the one-way liquid inlet valve and the one-way liquid outlet valve, the drive box 2 can continuously suck the pretreatment liquid at the bottom of the pretreatment box 12 into the pretreatment box 12 and convey it to the spray pipe 61 through the pretreatment box 12, enabling the pretreatment liquid to be in a spray shape in the pretreatment box 12. In this way, the gas that has just been separated from the pretreatment liquid can still come into contact with the spray-shaped pretreatment liquid during the upward movement, further improving the pretreatment efficiency of the waste gas.

[0048] In this embodiment, multiple gears can be meshed at the connection between the intake shaft 43 and the intake turbine 42. Through the meshing transmission of different gears, labor can be saved. After the intake turbine 42 rotates a set number of turns, the intake shaft 43 rotates one turn. Such a design can reduce the rotational pressure of the intake turbine 42 and enable the intake shaft 43 to rotate better. Since gear meshing transmission is a prior art, this application will not describe it in detail.

[0049] In this embodiment, please refer to Figure 3 、 Figure 6 , a first filter screen 433 for filtering is provided at the water inlet end of the second hole 432. A scraping plate 221 is fixedly connected to the bottom of the driving plate 22 and is used for removing impurities on the surface of the first filter screen 433. A plurality of inverted frustum-shaped sedimentation tanks 23 are provided at the bottom of the driving groove. A pressure filtration tank 121 is provided at the bottom of the pretreatment tank 12. A pressure filtration plate 75 that can move up and down is provided in the pressure filtration tank 121. The central groove 321 at the bottom of the intake shaft 43 communicates with the pressure filtration tank 121, and a one-way drainage valve is provided at the bottom of the central groove 321. A second filter screen 74 is provided at the connection between the central groove 321 and the pressure filtration tank 121. A sludge discharge groove 24 communicating with the pressure filtration tank 121 is provided at the bottom of the sedimentation tank 23. A one-way liquid inlet valve is provided in the sludge discharge groove 24, and a sealing plate that can be opened and closed and is used for selectively sealing the sludge discharge groove 24 is also provided in the sludge discharge groove 24.

[0050] The design of the sedimentation tank 23 can effectively collect impurities and sediments in the driving groove in the sedimentation tank 23. The design of the pressure filtration plate 75, the pressure filtration tank 121, the second filter screen 74, the sludge discharge groove 24, the one-way liquid inlet valve and the one-way liquid outlet valve can automatically suck the impurity sediments at the bottom of the sedimentation tank 23 into the pressure filtration tank 121 through the up and down movement of the pressure filtration plate 75 and in cooperation with the one-way liquid inlet valve and the one-way liquid outlet valve, and then discharge them through the diversion groove. The design of the second filter screen 74 can effectively prevent the impurity sediments from separating through the diversion groove. After more and more impurity sediments accumulate on the pressure filtration plate 75 due to the continuous up and down movement of the pressure filtration plate 75, the treatment liquid inside the impurity sediments can be fully squeezed and separated by the pressure filtration plate 75. At this time, the automatic separation of the impurity sediments in the driving groove can be realized. The design of the sealing plate can prevent the treatment liquid from entering the pressure filtration tank 121 through the sealing of the sealing plate when not under pressure filtration. While the pressure filtration plate 75 is under pressure filtration, the treatment liquid separated by pressure filtration can also enter the spray pipe 61 through the central groove 321 and flow back into the pretreatment tank 12 through the spray holes 611, effectively reducing the loss of the treatment liquid and lowering the cost.

[0051] In this embodiment, please refer to Figure 6, a rotatable filter press shaft 7 is provided in the filter press tank 121. A third reciprocating thread 71 is provided on the filter press shaft 7, and a reciprocating ring plate is provided on the filter press shaft 7 and is connected in a matching manner with the third reciprocating thread 71. The filter press plate 75 is connected to the reset ring plate 72. The filter press shaft 7 and the bottom of the air inlet shaft 43 can be selectively connected. A third hole 73 communicating with the central groove 321 inside the air inlet shaft 43 is provided on the filter press shaft 7. The second filter screen 74 is arranged at the inlet of the third hole 73, and the one-way drain valve is arranged in the third hole 73. The design of the filter press shaft 7 enables the air inlet shaft 43 to drive the filter press shaft 7 to rotate while rotating. In combination with the third reciprocating thread 71 and the reciprocating ring plate, the automatic periodic up-and-down movement of the filter press plate 75 can be realized. The addition of the third hole 73 enables the treatment liquid to enter the diversion groove through the third hole 73. The design of the third reciprocating thread 71 and the reciprocating ring plate can utilize the characteristics of the third reciprocating thread 71 to realize the automatic periodic reciprocating movement of the filter press plate 75, reducing the cost.

[0052] In this embodiment, please refer to Figure 6 and Figure 7 , the filter press plate 75 includes a plurality of filter press sub-plates 751. The filter press sub-plates 751 are fan-shaped. The filter press sub-plates 751 are rotatably connected to the reciprocating ring plate, and buffer rubbers 77 are provided at the edges of the filter press sub-plates 751. A support plate is provided at the bottom of the reciprocating ring plate, and a first hydraulic rod 76 is provided on the support plate. The end of the first hydraulic rod 76 is rotatably connected to the corresponding filter press sub-plate 751. The design of the first hydraulic rod 76 can realize the rotation of the filter press sub-plate 751 through the telescopic movement of the first hydraulic rod 76. The addition of the buffer rubber 77 enables the filter press sub-plate 751 to rotate better. The rotation of the filter press sub-plate 751 can automatically separate the impurity deposits on the filter press sub-plate 751. The design of the filter press sub-plate 751 enables the impurity deposits on the filter press sub-plate 751 to be automatically separated by the rotation of the filter press sub-plate 751 after the filter press is completed, so that the filter press plate 75 can continuously perform filter press separation.

[0053] In this embodiment, sleeves for sealing and telescoping are provided on both the drive plate 22 and the reciprocating ring plate. The sleeves are respectively fixedly connected to the corresponding air inlet shaft 43 and filter press shaft 7, and the sleeves are used to improve the sealing performance of the reciprocating thread.

[0054] In this embodiment, please refer to Figure 6 and Figure 8, a connecting groove 703 that rotates and is sealedly connected to the air inlet shaft 43 is provided at the end of the filter press shaft 7. A pressing groove 70 is provided on the side wall of the connecting groove 703. A pressing plate 702 is provided in the pressing groove 70, and a second hydraulic rod 701 for driving the pressing plate 702 to move back and forth is provided in the pressing groove 70. The design of the pressing plate 702 and the second hydraulic rod 701 can drive the pressing plate 702 to be in pressing contact with the side wall of the air inlet shaft 43 through the second hydraulic rod 701, thereby realizing the connection and fixation between the filter press shaft 7 and the air inlet shaft 43. When the pressing plate 702 is separated from the air inlet shaft 43, the rotation of the air inlet shaft 43 at this time will not drive the filter press shaft 7 to rotate, thereby realizing the selective connection between the filter press shaft 7 and the air inlet shaft 43.

[0055] In this embodiment, please refer to Figure 3 and Figure 4 , a piston plate 63 that slides and is sealedly connected is provided in the adapter groove 62. A through liquid inlet hole is provided on the piston plate 63. A connection hose 65 that is communicated with the connection groove 703 is provided on one side of the liquid inlet hole. A return spring 64 for driving the piston plate 63 to automatically return to the initial position is provided in the adapter groove 62. A first mesh plate 51 is fixedly connected in the pretreatment tank 12. The adsorption cotton 5 is fixedly installed at the bottom of the first mesh plate 51, and the other end of the adsorption cotton 5 is connected to a second mesh plate 53. A plurality of synchronizing rods 52 fixedly connected are provided at the bottom of the second mesh plate 53. One end of the synchronizing rod 52 movably and sealedly passes through the adapter groove 62 and is fixedly connected to the piston plate 63. The up and down movement of the piston plate 63 can also drive the up and down movement of the second mesh plate 53 through the transmission of the synchronizing rod 52, so that the second mesh plate 53 can periodically press the adsorption cotton 5, and can timely squeeze and separate the moisture of the adsorption cotton 5, so that the adsorption cotton 5 can continuously maintain a good adsorption state.

[0056] When the VOCs waste gas dynamic monitoring device in this embodiment is in use:

[0057] Start the intake air blower 14, suck and divert the gas through the intake pipe 15 into the intake disk 4. The gas entering the intake disk 4 enters the flow equalizing pipe 3 through the intake turbine 42, then enters the pretreatment pipe 31, and enters the pretreatment box 12 through the intake holes 311. Due to the setting of the positions of the intake holes 311, the reaction force generated by the airflow entering the pretreatment box 12 can push the pretreatment pipe 31 to rotate, enabling the pretreatment pipe 31 to rotate while taking in air. In this rotational manner, the contact probability between the waste gas and the pretreatment liquid is fully provided, thereby improving the treatment efficiency of the pretreatment liquid on the waste gas. At the same time, due to the rotation of the flow equalizing pipe 3, the adjusting ring plate 33 can be driven to rotate around the adjusting shaft 32 through the connecting shaft 37. And because of the existence of the first reciprocating thread 34, and the adjusting shaft 32 is fixedly connected to the intake disk 4, the adjusting ring plate 33 can be driven to move up and down periodically through the first reciprocating thread 34, thus enabling the pretreatment pipe 31 to rotate around the adjusting shaft 32 while also being able to rotate around the rotating shaft. Such a design fully improves the contact probability between the waste gas and the pretreatment liquid, thereby enhancing the pretreatment effect on the waste gas;

[0058] When the waste gas passes through the intake disk 4, it can push the intake turbine 42 to rotate. The rotation of the intake turbine 42 can drive the intake shaft 43 to rotate. And due to the existence of the second reciprocating thread 431, the second reciprocating thread 431 can drive the driving plate 22 to move up and down periodically. Cooperating with the first hole 21, the second hole 432, the one-way liquid inlet valve and the one-way liquid outlet valve, the treatment liquid can be automatically pressed through the second hole 432 into the central groove 321, then enter the transfer groove 62 through the connecting hose 65, and spray out through the spray holes 611 on the spray pipe 61, which can spray the waste gas that has just been separated from the pretreatment liquid to a certain extent, further improving the waste gas pretreatment efficiency. The design of the piston plate 63 and the return spring 64 can keep a certain pressure in the transfer groove 62 all the time, enabling the spray holes 611 to continuously spray out the treatment liquid when the driving plate 22 moves upward; the up and down movement of the piston plate 63 is realized, and the up and down movement of the piston plate 63 can also drive the up and down movement of the second mesh plate 53 through the transmission of the synchronizing rod 52, enabling the second mesh plate 53 to periodically press the adsorption cotton 5, and being able to squeeze and separate the moisture of the adsorption cotton 5 in time, so that the adsorption cotton 5 can continuously maintain a good adsorption state;

[0059] The airflow adsorbed by the adsorption cotton 5 can then enter the monitor 11; the gas is analyzed and detected by the monitor 11.

[0060] Meanwhile, with the continuous pressing and feeding of the driving plate 22, the treatment liquid in the pretreatment tank 12 can be continuously sucked into the driving groove. Under the filtration and separation of the first filter screen 433, the automatic filtration and separation of the impurity deposits in the treatment liquid are realized, and they are uniformly collected in the driving groove, ensuring that the treatment liquid outside the driving box 2 always has good adsorption capacity;

[0061] When the impurity deposits in the driving groove accumulate to a certain extent, control the sealing plate to open the sludge discharge groove 24. At the same time, control the second hydraulic rod 701 to make the pressing plate 702 squeeze the air inlet shaft 43, so that the air inlet shaft 43 is connected and fixed to the filter press shaft 7. At this time, the air inlet shaft 43 can drive the filter press shaft 7 to move synchronously. Thus, during the periodic up and down movement of the filter press plate 75, and in cooperation with the one-way liquid inlet valve and the one-way liquid outlet valve, the impurity deposits in the sedimentation tank 23 can be sucked into the filter press tank 121 and filtered and separated by the second filter screen 74. The treatment liquid after being filtered and separated by the second filter screen 74 also enters the transfer groove 62 through the central groove 321, reducing the loss of the treatment liquid;

[0062] When the impurity deposits on the filter press plate 75 accumulate to a certain extent, when the filter press plate 75 moves to the uppermost position at this time, release the fixation of the pressing plate 702 on the air inlet shaft 43. At the same time, control the sealing plate to seal the sludge discharge groove 24. In this way, the normal transportation of the treatment liquid in the driving groove is maintained. And at this time, control the filter press sub-plate 751 to rotate through the first hydraulic rod 76, so that the impurity deposits on the filter press sub-plate 751 can automatically fall to the bottom of the filter press tank 121 as the filter press sub-plate 751 tilts. After the separation is completed, control the filter press sub-plate 751 to automatically recover to form the filter press plate 75 and wait for the next filtration.

[0063] A method for a VOCs waste gas dynamic monitoring device includes the following steps:

[0064] S1 Start the intake fan 14 so that the intake pipe 15 sucks and transports the waste gas into the pretreatment tank 12;

[0065] S2 The waste gas enters the pretreatment tank 12 through the intake holes 311 on the pretreatment pipe 31 and contacts the pretreatment liquid in the pretreatment tank 12. Through the rotation of the pretreatment pipe 31, the waste gas can fully contact the pretreatment liquid, and the impurities in the waste gas are adsorbed and separated;

[0066] S3 The waste gas passing through the pretreatment liquid contacts the pretreatment liquid sprayed out from the spray pipe 61 during the rising process. Through the spraying method, the impurities in the waste gas are further removed;

[0067] S4 The waste gas after spraying finally passes through the adsorption cotton 5, and the liquid in the waste gas is adsorbed and separated. At this time, the pretreatment of the waste gas is completed;

[0068] After the S5 waste gas is pre-treated, it enters the monitor 11, and the monitor 11 analyzes and detects the gas.

[0069] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of" describing a combination shall include the identified elements, components, parts or steps and other elements, components, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combinations of elements, components, parts or steps herein also contemplates embodiments consisting essentially of these elements, components, parts or steps. By using the term "may" herein, it is intended to indicate that any attribute described as "may" included is optional.

[0070] A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step can be divided into separate multiple elements, components, parts or steps. The disclosure of "a" or "an" used to describe an element, component, part or step does not mean to exclude other elements, components, parts or steps.

[0071] It should be understood that the above description is for illustration purposes and not for limitation. Many embodiments and many applications other than the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present application should not be determined with reference to the above description, but should be determined with reference to the appended claims and the full scope of equivalents of these claims. For the sake of completeness, all articles and references including patent applications and published disclosures are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended to abandon such subject matter, nor should the inventor be regarded as not considering such subject matter as part of the disclosed inventive subject matter.

Claims

1. A VOCs waste gas dynamic monitoring device, characterized in that: It includes a monitoring box, in which an intake fan, a pretreatment box and a monitor are provided. An intake pipe is provided at the intake end of the intake fan, and the output end of the intake fan is communicated with the intake end of the pretreatment box. Pretreatment liquid is stored in the pretreatment box. A plurality of rotatable pretreatment pipes are provided in the pretreatment liquid. A plurality of intake holes are provided on the pretreatment pipes, and the pretreatment pipes are communicated with the output end of the intake fan. A plurality of rotatable spray pipes are provided above the liquid level of the pretreatment liquid. A plurality of spray holes are provided on the spray pipes. A porous adsorption cotton for adsorption is provided above the pretreatment box, and the exhaust end of the pretreatment box is communicated with the intake end of the monitor.

2. The VOCs waste gas dynamic monitoring device according to claim 1, wherein: An intake disk fixedly connected and in a volute shape is provided in the pretreatment box. A rotatably connected intake turbine is provided in the intake disk, and a communicating guide pipe is provided on one side of the intake disk. The guide pipe is communicated with the output end of the intake fan. A rotatably and sealingly connected flow equalizing pipe is provided in the middle of the upper end of the intake disk. A plurality of through adjustment grooves are provided on the side wall of the flow equalizing pipe. A rotatably connected rotating shaft is provided between one end of the pretreatment pipe and the adjustment groove. A sealing and elastic sealing ring is provided in the adjustment groove. The sealing ring is connected and sealed with the pretreatment pipe. An adjustment shaft fixedly connected with the intake disk is provided in the flow equalizing pipe. A first reciprocating thread is provided on the adjustment shaft, and an adjustment ring plate is sleeved on the adjustment shaft. The adjustment ring plate is connected in a matching manner with the first reciprocating thread, and a plurality of rotatably connected and telescopic connecting shafts are provided on the outer side of the adjustment ring plate. The end of the connecting shaft is communicated with the intake end of the pretreatment pipe. The intake holes are all provided on the same side of the corresponding pretreatment pipe. A one-way intake valve is provided in the pretreatment pipe.

3. The VOCs waste gas dynamic monitoring device according to claim 2, characterized in that: A driving box fixedly connected is provided at the bottom of the pretreatment box. A prismatic driving groove is provided in the driving box. A slidably and sealingly connected driving plate is provided in the driving groove, and a plurality of first holes are provided on the side wall of the driving groove. A one-way liquid inlet valve is provided in the first hole. A rotatably connected intake shaft is provided in the middle of the intake disk. The intake shaft is connected with the intake turbine, and one end of the intake shaft passes through the driving box and the driving plate. A second reciprocating thread is provided on the intake shaft, and the intake shaft is connected with the driving plate through the second reciprocating thread. Central grooves communicated with each other are provided in both the intake shaft and the adjustment shaft, and the intake shaft and the adjustment shaft are rotatably and sealingly connected. A plurality of second holes communicated with the central groove are provided on the side wall of the intake shaft located in the driving box. A one-way liquid outlet valve is provided in the second hole. A rotatably and sealingly connected transfer disk is provided at the upper end of the flow equalizing pipe. The adjusting rod is fixedly connected with the transfer disk. A transfer groove is provided in the transfer disk. A communicating groove communicated with the central groove in the adjustment shaft is provided between the transfer groove and the central groove in the adjustment shaft. The spray pipe is communicated with the transfer groove.

4. The VOCs waste gas dynamic monitoring device according to claim 3, characterized in that: The second hole water inlet end is provided with a first filter screen for filtering. The bottom of the driving plate is provided with a scraping plate fixedly connected and used for removing impurities on the surface of the first filter screen. The bottom of the driving groove is provided with a plurality of sedimentation tanks in an inverted frustum shape. The bottom of the pretreatment tank is provided with a pressure filtration tank. The pressure filtration tank is provided with a pressure filtration plate that can move up and down. The central groove at the bottom of the air inlet shaft is communicated with the pressure filtration tank, and a one-way liquid discharge valve is arranged at the bottom of the central groove. A second filter screen is arranged at the communication part between the central groove and the pressure filtration tank. The bottom of the sedimentation tank is provided with a sludge discharge tank communicated with the pressure filtration tank. A one-way liquid inlet valve is arranged in the sludge discharge tank, and a sealing plate that can be opened and closed and is used for selectively sealing the sludge discharge tank is also arranged in the sludge discharge tank.

5. The VOCs waste gas dynamic monitoring device according to claim 4, characterized in that: The pressure filtration tank is provided with a rotatable pressure filtration shaft. The pressure filtration shaft is provided with a third reciprocating thread, and a reciprocating ring plate is arranged on the pressure filtration shaft and is connected with the third reciprocating thread in a matching manner. The pressure filtration plate is connected with the reset ring plate. The pressure filtration shaft and the bottom of the air inlet shaft can be selectively connected. The pressure filtration shaft is provided with a third hole communicated with the central groove in the air inlet shaft. The second filter screen is arranged at the inlet of the third hole. The one-way liquid discharge valve is arranged in the third hole.

6. The VOCs waste gas dynamic monitoring device according to claim 5, wherein: The pressure filtration plate comprises a plurality of pressure filtration sub-plates. The pressure filtration sub-plates are fan-shaped. The pressure filtration sub-plates are rotatably connected with the reciprocating ring plate. A buffer rubber is arranged at the edge of the pressure filtration sub-plate. A support plate is arranged at the bottom of the reciprocating ring plate. A first hydraulic rod is arranged on the support plate. The end of the first hydraulic rod is rotatably connected with the corresponding pressure filtration sub-plate.

7. The VOCs waste gas dynamic monitoring device according to claim 5, wherein: The end of the pressure filtration shaft is provided with a connection groove that is rotatably and hermetically connected with the air inlet shaft. A pressing groove is arranged on the side wall of the connection groove. A pressing plate is arranged in the pressing groove. A second hydraulic rod for driving the pressing plate to move back and forth is arranged in the pressing groove.

8. The VOCs waste gas dynamic monitoring device according to claim 3, wherein: A piston plate that slides and is hermetically connected is arranged in the transfer groove. The piston plate is provided with a through liquid inlet hole. A connection hose communicated with the connection groove is arranged on one side of the liquid inlet hole. A return spring for driving the piston plate to automatically return to the initial position is arranged in the transfer groove.

9. The VOCs waste gas dynamic monitoring device according to claim 8, characterized in that: A first net plate is fixedly connected in the pretreatment tank. The adsorption cotton is fixedly installed at the bottom of the first net plate. The other end of the adsorption cotton is provided with a connected second net plate. A plurality of synchronizing rods fixedly connected are arranged at the bottom of the second net plate. One end of the synchronizing rod movably and hermetically passes through the transfer groove and is fixedly connected with the piston plate.

10. A method for dynamically monitoring VOCs waste gas, which uses the VOCs waste gas dynamic monitoring device described in any one of the above claims 1-9, is characterized in that, Including the following steps: S1 Start the air inlet fan so that the air inlet pipe sucks and conveys the waste gas into the pretreatment tank. S2 The waste gas enters the pretreatment tank through the air inlet holes on the pretreatment pipe and contacts the pretreatment liquid in the pretreatment tank. Through the rotation of the pretreatment pipe, the waste gas can fully contact the pretreatment liquid, and the impurities in the waste gas are adsorbed and separated. S3 The waste gas passing through the pretreatment liquid contacts the pretreatment liquid sprayed out from the spray pipe during the rising process. Through the spraying method, the impurities in the waste gas are further removed. S4 The waste gas after spraying finally passes through the adsorption cotton, and the liquid in the waste gas is adsorbed and separated. At this time, the pretreatment of the waste gas is completed. S5 After the pretreatment of the waste gas, it enters the monitor, and the gas is analyzed and detected by the monitor.

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