Waste gas purification device for double-screw extruder

Abstract

The invention discloses a waste gas purification device for a twin-screw extruder, and relates to the technical field of extruder waste gas treatment.The waste gas purification device comprises a purification box, a gas inlet is fixedly connected to the lower portion of one side of the purification box, a gas outlet is fixedly connected to the upper portion of the side, away from the gas inlet, of the purification box, and a main switch is electrically connected to the side, close to the gas inlet, of the purification box; the sealing plates in the linkage frame can be sequentially and rotationally opened, so that waste gas can be in contact with the activated carbon adsorption plates at different positions, the problem that in the prior art, a central area is saturated, and an edge area is not fully utilized is solved, and it is ensured that all areas of the activated carbon adsorption plates can be used in a balanced mode; the waste gas can be uniformly contacted with different areas of the activated carbon adsorption plate, so that activated carbon particles in each area can be fully utilized, the condition that the activated carbon adsorption plate has to be wholly replaced due to saturation of a central area is avoided, and the service life of the activated carbon adsorption plate is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment of extruders, in particular to a waste gas purification device for a twin-screw extruder. Background Art

[0002] An extruder is a device that converts solid plastic into a uniform melt by rotating the screw in the barrel and extrude it continuously under pressure. During the processing of plastic and rubber polymer materials, especially during the melt extrusion process, the extruder will generate waste gas, which contains a variety of harmful substances, mainly including volatile organic compounds (VOCs), particulate matter and other harmful gases, such as non-methane total hydrocarbons, benzene, toluene, ethylbenzene, styrene and xylene. Therefore, it is necessary to use a waste gas purification device to filter and purify the waste gas generated by the extruder to protect the air environment;

[0003] In the process of filtering and purifying exhaust gas in the existing exhaust gas purification device, the exhaust gas will contact with the activated carbon plate arranged inside the exhaust gas purification device, and the activated carbon plate will adsorb harmful substances in the exhaust gas to achieve exhaust gas purification and filtration. However, the contact area between the exhaust gas and the activated carbon plate is irregular, resulting in that the central area of ​​the activated carbon plate is saturated after long-term use, and the harmful substances in the exhaust gas cannot be absorbed, while the edge area cannot be fully utilized, which not only reduces the overall utilization efficiency of the activated carbon plate, but also makes the exhaust gas purification device have to be replaced as a whole due to the saturation of the central area even if the activated carbon particles in the edge area still have good adsorption performance after a long-term operation, which increases the replacement frequency and replacement cost of the activated carbon plate, and also increases the operating cost of the entire exhaust gas purification device. Moreover, as the central area of ​​the activated carbon plate gradually becomes saturated, its adsorption capacity for harmful substances in the exhaust gas will be greatly reduced, resulting in a significant reduction in the purification effect, and it cannot meet the increasingly stringent environmental emission standards, posing a potential threat to the environment and human health.

[0004] Therefore, the present invention proposes an exhaust gas purification device for a twin-screw extruder to solve the above problems. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides an exhaust gas purification device for a twin-screw extruder, which can effectively solve the problems in the prior art.

[0007] (II) Technical solution

[0008] To achieve the above object, the object of the present invention can be achieved by the following technical solutions:

[0009] A waste gas purification device for a twin-screw extruder comprises a purification box, an air inlet is fixedly connected to the lower side of one side of the purification box, an air outlet is fixedly connected to the upper side of the purification box away from the air inlet, a main switch is electrically connected to the side of the purification box close to the air inlet, a mounting shell is fixedly connected to the side wall of the purification box, a water pipe is fixedly connected through the inside of the purification box, a nozzle is fixedly connected to the water pipe at equal intervals, and also comprises an activated carbon full utilization mechanism and an activated carbon status detection mechanism, the activated carbon full utilization mechanism comprises a linkage frame, the linkage frame is fixedly connected to the purification box, partitions are equidistantly penetrated and slidably connected to the upper end surface of the linkage frame, a frame is fixedly connected between the upper ends of the partitions, activated carbon adsorption plates are fixedly connected to the inside of the frame at equal intervals, the activated carbon full utilization mechanism is used to make the waste gas evenly contact various parts of the activated carbon adsorption plate, and the activated carbon status detection mechanism is used to detect the usage status of the activated carbon adsorption plate.

[0010] As a further solution of the present invention: connecting shafts are equidistantly penetrated and rotatably connected on the linkage frame, the connecting shafts are located inside the linkage frame and are fixedly connected to sealing plates on their outer surfaces, the connecting shafts are penetrated and rotatably connected to the purification box at one end away from the linkage frame, and the connecting shafts are located in the mounting shell at one end away from the linkage frame.

[0011] As a further solution of the present invention: the outer surface of the connecting shaft is provided with an arc groove, the outer surface of the connecting shaft is sleeved with a ring, the ring is slidably connected to the outer surface of the connecting shaft through the arc groove, the lower end of the ring is fixedly connected to a vertical plate, the lower end of the vertical plate is slidably connected to a support column, the support column is fixedly connected to the side wall of the purification box, the outer surface of the support column is sleeved with a first spring, and the first spring is fixedly connected between the vertical plate and the purification box.

[0012] As a further solution of the present invention: the vertical plate is fixedly connected to a fixed column on one side away from the purification box, and the fixed column is fitted with a cam on one end away from the vertical plate. A rotating shaft is passed through and fixedly connected between the cams, and the rotating shaft is passed through and rotatably connected to the mounting shell, and the cams are distributed in a circular staggered manner with respect to each other.

[0013] As a further solution of the present invention: one end of the rotating shaft is fixedly connected to a linkage plate, and the outer surface of the linkage plate is annularly and equidistantly provided with limit grooves and grooves, and the limit grooves and grooves are alternately distributed. A disk is provided on one side of the linkage plate, and the disk and the limit grooves are adapted to each other. A connecting plate is fixedly connected to a connecting plate on a side close to the mounting shell, and a shift rod is fixedly connected to a side of the connecting plate away from the mounting shell, and the shift rod is adapted to the groove. A driving motor is fixedly connected to a support frame on the driving motor, and the support frame is fixedly connected to the side wall of the mounting shell.

[0014] As a further solution of the present invention: the activated carbon condition detection mechanism includes symmetrically arranged lifting columns, the lifting columns are fixedly connected to the lower end surface of the frame, the lifting columns are slidably connected to the linkage frame, cavities are opened on both sides of the linkage frame, and the lower ends of the lifting columns are located in the cavities.

[0015] As a further solution of the present invention: the outer surface of the lifting column is sleeved with a second spring, the upper end of the second spring is fixedly connected to the lower end surface of the frame, and the lower end of the second spring is fixedly connected to the upper end surface of the linkage frame.

[0016] As a further solution of the present invention: hollow columns are fixedly connected on both sides of the linkage frame, the hollow columns are communicated with the cavity, the hollow columns are penetrated and fixedly connected to the purification box, and the ends of the hollow columns away from the linkage frame are penetrated and slidably connected with a push rod.

[0017] As a further solution of the present invention: a button is provided on the side of the push rod away from the hollow column, the button is fixedly connected with a mounting bracket, the mounting bracket is fixedly connected to the side wall of the purification box, the mounting bracket is fixedly connected with a display light on the side away from the button, and the display light is electrically connected to the button.

[0018] As a further solution of the present invention: one of the top rods is fixedly connected to a connecting block on its outer surface, the lower end of the connecting block is rotatably connected to a connecting rod, the connecting rod is rotatably connected to a shift plate at one end away from the connecting block, the shift plate is attached to the surface of the main switch, vertical rails are provided on both sides of the shift plate, the vertical rails are fixedly connected to the side walls of the purification box, and the shift plate is slidably connected between the two vertical rails.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention provides an exhaust gas purification device for a twin-screw extruder, which has the following beneficial effects:

[0021] 1. Through the activated carbon full utilization mechanism, the sealing plates inside the linkage frame can be rotated and opened in sequence, so that the exhaust gas can contact the activated carbon adsorption plates at different positions respectively, thereby avoiding the problem of saturation of the central area and underutilization of the edge area in the traditional technology, ensuring that each area of ​​the activated carbon adsorption plate can be used evenly, improving the overall utilization efficiency, and because the exhaust gas can be evenly contacted with different areas of the activated carbon adsorption plate, the activated carbon particles in each area can be fully utilized, avoiding the situation that the activated carbon adsorption plate has to be replaced as a whole due to saturation of the central area, thereby extending the service life of the activated carbon adsorption plate, and the full utilization of the activated carbon adsorption plate can improve the purification effect of the exhaust gas, help reduce the emission of harmful substances in the exhaust gas, thereby reducing pollution to the environment and potential threats to human health;

[0022] Among them, through the cooperation of the set first spring and the cam, the sealing plate can be automatically driven to flip over after contacting the activated carbon adsorption plate in one of the areas, so as to seal the activated carbon adsorption plate in that area, so as to prevent the subsequent exhaust gas from contacting the activated carbon adsorption plate in other areas again when contacting the activated carbon adsorption plate in this area, thereby ensuring that the amount of exhaust gas filtered and purified by the activated carbon adsorption plates in each area is the same, maximizing the use of the adsorption capacity of the activated carbon adsorption plate to maintain the operation of the entire exhaust gas purification device, ensuring that harmful substances in the exhaust gas are effectively removed, and meeting environmental emission standards.

[0023] 2. Through the provided linkage plate, limit groove, groove, disc, connecting plate and lever, the rotating shaft can be intermittently rotated to realize the intermittent opening of the sealing plate inside the linkage frame, so that the exhaust gas and the activated carbon adsorption plate can be more fully mixed with the spray liquid in the purification box before contacting. It can not only remove some harmful substances in the exhaust gas in advance and reduce the burden of the activated carbon adsorption plate, thereby improving the overall exhaust gas treatment effect, but also the concentration and type of harmful substances in the exhaust gas pretreated by the spray liquid will change, which helps the activated carbon adsorption plate to more effectively adsorb the remaining harmful substances. At the same time, the spray liquid helps to adjust the humidity and temperature of the exhaust gas, further improving the adsorption efficiency of the activated carbon;

[0024] Among them, the disc and limit groove are set, which can prevent the rotating shaft from being affected by external factors and causing gaps in the sealing plate during the mixing process of the exhaust gas and the spray liquid, thereby ensuring that the exhaust gas will not contact the activated carbon adsorption plate in advance through the gap, thereby not only extending its service life and reducing the burden on the activated carbon adsorption plate, avoiding its premature saturation or failure, but also reducing the risk of failure caused by external factors, ensuring that the exhaust gas purification device can operate normally at critical moments to meet production or environmental protection requirements.

[0025] 3. Through the set activated carbon condition detection mechanism, during the process of exhaust gas purification and filtration by the activated carbon adsorption plate, as the weight of the activated carbon adsorption plate will increase significantly after long-term use (adsorbing pollutants), the push rod can be pushed out from the inside of the hollow column, the button can be pressed, the display light can be turned on to work, and the staff can be reminded in time that the activated carbon adsorption plate is close to or has reached saturation. This not only avoids unnecessary maintenance and replacement operations of the activated carbon adsorption plate, saves time and labor costs, but also improves maintenance efficiency. Moreover, real-time monitoring can ensure the working status of the activated carbon adsorption plate, which can ensure the purification effect of the purification box on the exhaust gas, reduce the content of harmful substances in the discharged exhaust gas, and protect the environment and human health.

[0026] 4. Through the setting of the connecting block, connecting rod, vertical rail and dial plate, after the activated carbon adsorption plate is saturated, the dial plate can be automatically pushed to turn the main switch to shut down and stop the operation of the purification box. This not only avoids the decline in purification effect due to the failure of activated carbon, ensures the continuous and stable operation of the exhaust gas purification box, protects the environment and human health, but also improves the safety of the purification box. After the activated carbon adsorption plate is saturated, if the purification box continues to operate, it will lead to poor exhaust gas treatment effect and even cause safety accidents. The automatic shutdown function can avoid this situation and ensure the safe operation of the purification box. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

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

[0029] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure of the middle A area;

[0030] Figure 3 For the present invention Figure 1 Schematic diagram of the enlarged structure of the middle B area;

[0031] Figure 4 This is a schematic diagram of the internal structure of the purification box of the present invention;

[0032] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure of the middle C area;

[0033] Figure 6 It is a schematic diagram of the connection structure between the linkage frame and the frame of the present invention;

[0034] Figure 7 This is a schematic diagram of the internal structure of the installation shell of the present invention;

[0035] Figure 8 It is a schematic diagram of the connection structure between the linkage frame and the hollow column of the present invention.

[0036] In the figure: 1. Purification box; 2. Air inlet; 3. Air outlet; 4. Mounting shell;

[0037] 501, support frame; 502, drive motor; 503, disc; 504, connecting plate; 505, lever; 506, linkage plate; 507, rotating shaft; 508, limiting groove; 509, groove; 510, linkage frame; 511, partition; 512, frame; 513, activated carbon adsorption plate; 514, cam; 515, fixing column; 516, vertical plate; 517, supporting column; 518, first spring; 519, ring; 520, connecting shaft; 521, arc groove; 522, sealing plate;

[0038] 601, hollow column; 602, top rod; 603, connecting block; 604, mounting frame; 605, display light; 606, connecting rod; 607, vertical rail; 608, dial plate; 609, lifting column; 610, second spring; 611, cavity; 612, button;

[0039] 7. Main switch; 8. Water pipe; 9. Shower head. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] An exhaust gas purification device for a twin-screw extruder in this embodiment, such as Figure 1 - Figure 8 As shown, it includes a purification box 1, an air inlet 2 is fixedly connected to the lower side of the purification box 1, an air outlet 3 is fixedly connected to the upper side of the purification box 1 away from the air inlet 2, a main switch 7 is electrically connected to the side of the purification box 1 close to the air inlet 2, a mounting shell 4 is fixedly connected to the side wall of the purification box 1, a water pipe 8 is fixedly connected to the inside of the purification box 1, and a nozzle 9 is fixedly connected to the water pipe 8 at an equal distance, and also includes an activated carbon full utilization mechanism and an activated carbon condition detection mechanism, the activated carbon full utilization mechanism includes a linkage frame 510, the linkage frame 510 is fixedly connected to the purification box 1, and the upper end surface of the linkage frame 510 is equidistantly penetrated and slidably connected with a partition 511, a frame 512 is fixedly connected between the upper ends of the partition 511, and an activated carbon adsorption plate 513 is fixedly connected to the inside of the frame 512 at an equal distance, and the activated carbon full utilization mechanism is used to make the exhaust gas evenly contact various parts of the activated carbon adsorption plate 513.

[0042] In this embodiment, Figure 5 and Figure 6 As shown, connecting shafts 520 are equidistantly passed through and rotatably connected on the linkage frame 510, and sealing plates 522 are fixedly connected to the inner and outer surfaces of the connecting shafts 520 located inside the linkage frame 510. The end of the connecting shaft 520 away from the linkage frame 510 is passed through and rotatably connected to the purification box 1, and the end of the connecting shaft 520 away from the linkage frame 510 is located in the mounting shell 4. When the connecting shaft 520 rotates on the linkage frame 510, it can drive the sealing plate 522 to move synchronously from a horizontal state to a vertical state, so that the exhaust gas can contact the upper activated carbon adsorption plate 513 through the linkage frame 510 to purify and filter the exhaust gas. When the sealing plate 522 is in a horizontal state, the exhaust gas will be blocked below the linkage frame 510 to prevent the exhaust gas from contacting the activated carbon adsorption plate 513 in advance.

[0043] In this embodiment, Figure 5 As shown, the outer surface of the connecting shaft 520 is provided with an arc groove 521, and the outer surface of the connecting shaft 520 is sleeved with a ring 519, and the ring 519 is slidably connected to the outer surface of the connecting shaft 520 through the arc groove 521. The lower end of the ring 519 is fixedly connected to the vertical plate 516, and the lower end of the vertical plate 516 is penetrated and slidably connected to the support column 517, and the support column 517 is fixedly connected to the side wall of the purification box 1. The outer surface of the support column 517 is sleeved with a first spring 518, and the first spring 518 is fixedly connected between the vertical plate 516 and the purification box 1. When the vertical plate 51 When the force is applied to the surface of the support column 517 and slides toward the purification box 1, the ring 519 is driven to slide on the outer surface of the connecting shaft 520, and the first spring 518 sleeved on the outer surface of the support column 517 is squeezed. When the ring 519 slides, the connecting shaft 520 can be driven to rotate through the arc groove 521. After the force applied to the vertical plate 516 disappears, the rebound force of the first spring 518 can push the vertical plate 516 to drive the ring 519 to move in the opposite direction, so that the ring 519 drives the arc groove 521 to drive the connecting shaft 520 to rotate in the opposite direction.

[0044] In this embodiment, Figure 5 and Figure 7 As shown, the vertical plate 516 is fixedly connected to the side away from the purification box 1 with a fixed column 515, and the fixed column 515 is fitted with a cam 514 at one end away from the vertical plate 516. The cams 514 are fixedly connected with a rotating shaft 507, and the rotating shaft 507 is rotatably connected to the mounting shell 4. The cams 514 are distributed in a circular staggered manner with respect to each other. When the rotating shaft 507 rotates, the cams 514 are staggered with each other, so that the cams 514 can be driven to push the fixed column 515 to move in turn through the staggered distribution of the cams 514.

[0045] In this embodiment, Figure 2As shown, one end of the rotating shaft 507 is fixedly connected to a linkage plate 506, and a limiting groove 508 and a groove 509 are equidistantly arranged in an annular manner on the outer surface of the linkage plate 506, and the limiting groove 508 and the groove 509 are alternately distributed. A disk 503 is arranged on one side of the linkage plate 506, and the disk 503 and the limiting groove 508 are adapted to each other. A connecting plate 504 is fixedly connected to the side of the disk 503 close to the mounting shell 4, and a lever 505 is fixedly connected to the side of the connecting plate 504 away from the mounting shell 4, and the lever 505 and the groove 509 are adapted to each other. A driving motor 502 is fixedly connected to the side of the disk 503 away from the mounting shell 4, and a support frame 501 is fixedly connected to the driving motor 502. The support frame 501 It is fixedly connected to the side wall of the mounting shell 4. When the driving motor 502 drives the disc 503 to rotate, the disc 503 can drive the lever 505 to rotate synchronously through the provided connecting plate 504, and make the disc 503 and the lever 505 contact the linkage plate 506 in turn. When the disc 503 contacts the limiting groove 508 opened on the side wall of the linkage plate 506, the linkage plate 506 can be limited. When the lever 505 contacts the groove 509 opened on the side wall of the linkage plate 506 and slides in the groove 509, the lever 505 will drive the rotating shaft 507 to rotate through the linkage plate 506, so that the rotating shaft 507 can realize intermittent rotation.

[0046] In the prior art, the contact area between the exhaust gas and the activated carbon plate presents irregularity, which leads to that after long-term use, the central area of ​​the activated carbon plate has become saturated and cannot absorb harmful substances in the exhaust gas, while the edge area cannot be fully utilized, which not only reduces the overall utilization efficiency of the activated carbon plate, but also makes the exhaust gas purification device have to be replaced as a whole due to the saturation of the central area even if the activated carbon particles in the edge area still have good adsorption performance after a long-term operation, thereby increasing the replacement frequency and replacement cost of the activated carbon plate, and also increasing the operating cost of the entire exhaust gas purification device. Moreover, as the central area of ​​the activated carbon plate gradually becomes saturated, its adsorption capacity for harmful substances in the exhaust gas will be greatly reduced, resulting in a significant reduction in the purification effect, which cannot meet the increasingly stringent environmental emission standards and poses a potential threat to the environment and human health. Compared with the prior art, it can be replaced in sequence. The sealing plate 522 inside the linkage frame 510 is rotated to open, so that the exhaust gas can contact the activated carbon adsorption plates 513 at different positions respectively, thereby not only avoiding the problem of saturation of the central area and underutilization of the edge area in traditional technology, ensuring that each area of ​​the activated carbon adsorption plate 513 can be used evenly, thereby improving the overall utilization efficiency, and because the exhaust gas can evenly contact different areas of the activated carbon adsorption plate 513, the activated carbon particles in each area can be fully utilized, avoiding the situation where the activated carbon adsorption plate 513 has to be replaced as a whole due to saturation of the central area, thereby extending the service life of the activated carbon adsorption plate 513, and the full utilization of the activated carbon adsorption plate 513 can enhance the purification effect of the exhaust gas, help reduce the emission of harmful substances in the exhaust gas, thereby reducing pollution to the environment and potential threats to human health.

[0047] In other aspects, this embodiment also provides an activated carbon condition detection mechanism for detecting the use condition of the activated carbon adsorption plate 513, such as Figure 1 , Figure 3 , Figure 6 and Figure 8 As shown, the activated carbon condition detection mechanism includes symmetrically arranged lifting columns 609, which are fixedly connected to the lower end surface of the frame 512, and the lifting columns 609 are slidably connected to the linkage frame 510. Cavities 611 are opened on both sides of the linkage frame 510, and the lower ends of the lifting columns 609 are located in the cavities 611.

[0048] In this embodiment, Figure 6As shown, the outer surface of the lifting column 609 is sleeved with a second spring 610, the upper end of the second spring 610 is fixedly connected to the lower end surface of the frame 512, and the lower end of the second spring 610 is fixedly connected to the upper end surface of the linkage frame 510. The second spring 610 can provide a supporting force for the frame 512 to prevent the lifting column 609 from automatically sliding into the linkage frame 510 due to other factors (such as equipment vibration) when the weight of the activated carbon adsorption plate 513 in the frame 512 does not change.

[0049] In this embodiment, Figure 8 As shown, hollow columns 601 are fixedly connected on both sides of the linkage frame 510, and the hollow columns 601 are connected to the cavity 611. The hollow columns 601 are fixedly connected to the purification box 1, and the ends of the hollow columns 601 away from the linkage frame 510 are slidably connected with the push rod 602. When the air in the cavity 611 is squeezed, the air will enter the interior of the hollow column 601 and push the push rod 602 out of the interior of the hollow column 601.

[0050] In this embodiment, Figure 8 As shown, a button 612 is provided on the side of the push rod 602 away from the hollow column 601, and a mounting bracket 604 is fixedly connected to the button 612. The mounting bracket 604 is fixedly connected to the side wall of the purification box 1, and a display light 605 is fixedly connected to the side of the mounting bracket 604 away from the button 612. The display light 605 is electrically connected to the button 612. When the push rod 602 slides out from the inside of the hollow column 601, the distance between the push rod 602 and the button 612 will gradually shorten until the push rod 602 is pressed on the hollow column 601, turning on the display light 605 to work.

[0051] In this embodiment, Figure 3 As shown, a connecting block 603 is fixedly connected to the outer surface of one of the push rods 602, and a connecting rod 606 is rotatably connected to the lower end of the connecting block 603. A dial plate 608 is rotatably connected to the end of the connecting rod 606 away from the connecting block 603. The dial plate 608 is attached to the surface of the main switch 7. Vertical rails 607 are arranged on both sides of the dial plate 608. The vertical rails 607 are fixedly connected to the side walls of the purification box 1. The dial plate 608 is slidably connected between the two vertical rails 607. When the push rod 602 moves horizontally, the push rod 602 will push the connecting block 603 to drive the upper end of the connecting rod 606 to move horizontally synchronously, so that the connecting rod 606 pulls the dial plate 608 away from the end of the connecting block 603 to slide upward between the vertical rails 607, and the main switch 7 attached to the dial plate 608 is turned off, thereby stopping the operation of the purification box 1.

[0052] In the prior art, in order to ensure the filtering and purification effect of the activated carbon board, the staff needs to clean and replace the activated carbon board regularly. However, before the staff repairs the activated carbon board, they cannot intuitively understand the usage degree of the activated carbon board in the exhaust gas purification equipment, which leads to the need for the staff to replace or clean it without a definite basis. This not only increases unnecessary maintenance costs, but also causes waste or premature replacement of the activated carbon board, thereby reducing maintenance efficiency. In addition, the filtering and purification effect of the activated carbon board directly affects the quality of exhaust gas emissions. If the activated carbon board is saturated or invalid, but the staff fails to discover and replace it in time, the purification effect of the exhaust gas purification equipment will be greatly reduced, so that the discharged exhaust gas still contains excessive harmful substances, which is different from the prior art. Compared with the technology, during the process of exhaust gas purification and filtration on the activated carbon adsorption plate 513, as the weight of the activated carbon adsorption plate 513 will increase significantly after long-term use (pollutants are adsorbed), the top rod 602 is pushed out from the inside of the hollow column 601, the button 612 is pressed, and the display light 605 is turned on to work, which promptly reminds the staff that the activated carbon adsorption plate 513 is close to or has reached the saturation state, which not only avoids unnecessary maintenance and replacement operations of the activated carbon adsorption plate 513, saves time and labor costs, but also improves maintenance efficiency, and real-time monitoring can ensure the working status of the activated carbon adsorption plate 513, which can ensure the purification effect of the purification box 1 on the exhaust gas, reduce the content of harmful substances in the discharged exhaust gas, and protect the environment and human health.

[0053] The working process and principle involved in the overall content of the above embodiment are as follows:

[0054] When the staff needs to purify and filter the waste gas generated by the twin-screw extruder, the gas is discharged into the purification box 1 through the air inlet 2 opened on the side wall of the purification box 1, and then the water pipe 8 connected through the inside of the purification box 1 is connected to the external spray liquid storage box, and the spray liquid inside the storage box is sprayed out from the nozzle 9 through the water pipe 8 and mixed with the waste gas entering the purification box 1. This can not only remove some harmful substances in the waste gas in advance and reduce the burden on the activated carbon adsorption plate 513, thereby improving the overall waste gas treatment effect, but also the concentration and type of harmful substances in the waste gas pretreated by the spray liquid will change, which helps the activated carbon adsorption plate 513 to more effectively adsorb the remaining harmful substances. At the same time, the spray liquid helps to adjust the humidity and temperature of the waste gas, further improving the adsorption efficiency of the activated carbon;

[0055] During the process of mixing the spray liquid and the exhaust gas, the staff simultaneously turns on the driving motor 502 connected to the side wall of the support frame 501 to drive the disc 503 to rotate. During the rotation of the disc 503, the disc 503 will slide in accordance with the limiting groove 508 opened on the side wall of the linkage frame 510, and at the same time, the linkage plate 506 is limited by the limiting groove 508 to prevent the linkage plate 506 from rotating due to external factors. When the disc 503 slides out of the limiting groove 508, the disc 503 connected to the limiting groove 508 is The connecting plate 504 will drive the lever 505 to rotate and slide into the groove 509 provided on the side wall of the linkage plate 506. As the lever 505 continues to rotate, the lever 505 will slide in the groove 509 and move the linkage plate 506 through the groove 509, driving the shaft 507 to rotate ninety degrees on the mounting shell 4. During the rotation of the shaft 507, the shaft 507 will drive the cam 514 connected to the outer surface to rotate synchronously. Since the cam 514 is distributed in an annular staggered manner, the shaft 507 drives the cam 514 to rotate synchronously. During the rotation process, the cam 514 will push one of the fixed columns 515 in turn to drive the vertical plate 516 to slide on the outer surface of the support column 517, and squeeze the first spring 518 connected between the vertical plate 516 and the purification box 1. At this time, as the vertical plate 516 slides on the outer surface of the support column 517 toward the purification box 1, the vertical plate 516 will drive the ring 519 connected to the upper end to slide synchronously with the outer surface of the connecting shaft 520. Since the outer surface of the connecting shaft 520 is provided with an arc groove 521, the ring 519 is horizontally connected to the purification box 1. During the movement, the arc groove 521 will drive the connecting shaft 520 to rotate synchronously, so that the connecting shaft 520 drives the sealing plate 522 to rotate inside the linkage frame 510 from horizontal to vertical. After the sealing plate 522 rotates to the vertical state, the exhaust gas inside the purification box 1 will follow the opened sealing plate 522, pass through the linkage frame 510 and contact the activated carbon adsorption plate 513 in one area set above the linkage frame 510, and pass through the activated carbon adsorption plate 513 to achieve purification and filtration;

[0056] When the cam 514 rotates away from the fixed column 515, the rebound force of the first spring 518 connected between the vertical plate 516 and the purification box 1 will push the vertical plate 516 to slide in the opposite direction on the outer surface of the support column 517. At this time, the vertical plate 516 will drive the ring 519 to move synchronously in the opposite direction on the outer surface of the connecting shaft 520, and through the arc groove 521 provided on the outer surface of the connecting shaft 520, the connecting shaft 520 is driven to rotate in the opposite direction, so that the sealing plate 522 connected to the outer surface of the connecting shaft 520 moves from the vertical state to the horizontal state again, and the channel inside the linkage frame 510 is sealed to prevent the subsequent exhaust gas from contacting the activated carbon adsorption plate 513 in other areas again when contacting the activated carbon adsorption plate 513 in the area, thereby ensuring that the amount of exhaust gas filtered and purified by the activated carbon adsorption plate 513 in each area is the same, maximizing the use of the adsorption capacity of the activated carbon adsorption plate 513 to maintain the operation of the entire exhaust gas purification device, ensuring that harmful substances in the exhaust gas are effectively removed to meet environmental protection emission standards;

[0057] As the subsequent rotating shaft 507 continues to rotate intermittently, the cam 514 connected to the outer surface of the rotating shaft 507 will push the fixed column 515 in turn, drive the vertical plate 516 to slide on the outer surface of the supporting column 517, and drive the sealing plate 522 inside the linkage frame 510 to open in turn through the ring 519, the connecting shaft 520 and the arc groove 521, so that the exhaust gas in the purification box 1 can contact with the activated carbon adsorption plate 513 in different areas, thereby avoiding the problem of saturation of the central area and underutilization of the edge area in the traditional technology, and ensuring that each activated carbon adsorption plate 513 is fully utilized. Each area can be used evenly, which improves the overall utilization efficiency. Moreover, since the exhaust gas can evenly contact different areas of the activated carbon adsorption plate 513, the activated carbon particles in each area can be fully utilized, avoiding the situation where the activated carbon adsorption plate 513 has to be replaced as a whole due to saturation of the central area, thereby extending the service life of the activated carbon adsorption plate 513. Moreover, the full utilization of the activated carbon adsorption plate 513 can improve the purification effect of the exhaust gas, help reduce the emission of harmful substances in the exhaust gas, thereby reducing pollution to the environment and potential threats to human health.

[0058] After the activated carbon adsorption plate 513 connected to the frame 512 has been working for a long time, the impurities filtered out on the activated carbon adsorption plate 513 will significantly increase the weight of the activated carbon adsorption plate 513 and the frame 512 themselves. At this time, the activated carbon adsorption plate 513 will automatically squeeze the second spring 610 below, pushing the partition plate 511 and the lifting column 609 connected to the lower end face to slide into the linkage frame 510. As the lifting column 609 descends, the lifting column 609 will slide into the cavity 611 opened in the linkage frame 510, squeezing the air in the cavity 611. Since the cavity 611 and the hollow column 601 are connected, when the air in the cavity 611 is squeezed, the air will flow from the cavity 611 to the inside of the hollow column 601, pushing the sliding connection of the top rod 602 running through the inside of the hollow column 601 to slide out of the hollow column 601. In the process of the push rod 602 sliding out from the inside of the hollow column 601, the distance between the push rod 602 and the button 612 will gradually shorten until the push rod 602 and the button 612 are in contact and the button 612 is pressed. Since the button 612 is electrically connected to the display light 605 connected to the mounting frame 604, after the button 612 is pressed, the display light 605 will be turned on synchronously to work, and the staff will be reminded in time that the activated carbon adsorption plate 513 has approached or reached the saturation state, which not only avoids unnecessary maintenance and replacement operations of the activated carbon adsorption plate 513, saves time and labor costs, and improves maintenance efficiency, but also real-time monitoring can ensure the working state of the activated carbon adsorption plate 513, and can ensure the purification effect of the purification box 1 on the exhaust gas, reduce the content of harmful substances in the exhaust gas discharged, and protect the environment and human health;

[0059] When the push rod 602 slides out of the hollow column 601 to press the button 612, the connecting block 603 connected to the outer surface of the push rod 602 will move horizontally synchronously. Since the lower end of the connecting block 603 is rotatably connected to the connecting rod 606, the end of the connecting rod 606 away from the connecting block 603 is rotatably connected to the side wall of the dial plate 608, and the dial plate 608 is vertically slidably connected between the two vertical plates 516, during the horizontal movement of the connecting block 603, the connecting block 603 will pull the dial plate 608 to slide upward synchronously between the two vertical rails 607 through the connecting rod 606, The main switch 7 that the dial plate 608 is in contact with is turned on to close the main switch 7 connected to the side wall of the purification box 1, and the operation of the purification box 1 is stopped. This not only avoids the decline in purification effect due to the failure of the activated carbon, ensures the continuous and stable operation of the exhaust gas purification box 1, and protects the environment and human health, but also improves the safety of the purification box 1. After the activated carbon adsorption plate 513 is saturated, if the purification box 1 continues to operate, it will lead to poor exhaust gas treatment effect and even cause a safety accident. The automatic shutdown function can avoid this situation and ensure the safe operation of the purification box 1.

[0060] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An exhaust gas purification device for a twin-screw extruder, comprising a purification box (1), an air inlet (2) fixedly connected to the lower side of one side of the purification box (1), an air outlet (3) fixedly connected to the upper side of the purification box (1) away from the air inlet (2), a main switch (7) electrically connected to the side of the purification box (1) close to the air inlet (2), a mounting shell (4) fixedly connected to the side wall of the purification box (1), a water pipe (8) fixedly connected to the inside of the purification box (1), and nozzles (9) fixedly connected to the water pipe (8) at equal intervals, characterized in that: It also includes an activated carbon full utilization agency and an activated carbon condition detection agency; The activated carbon full utilization mechanism comprises a linkage frame (510), the linkage frame (510) is fixedly connected in the purification box (1), a partition (511) is equidistantly penetrated and slidably connected to the upper end surface of the linkage frame (510), a frame (512) is fixedly connected between the upper ends of the partitions (511), and an activated carbon adsorption plate (513) is equidistantly fixedly connected inside the frame (512), and the activated carbon full utilization mechanism is used to make the exhaust gas evenly contact various parts of the activated carbon adsorption plate (513); The activated carbon condition detection mechanism is used to detect the use condition of the activated carbon adsorption plate (513).

2. The exhaust gas purification device for a twin-screw extruder according to claim 1, characterized in that: The linkage frame (510) is equidistantly penetrated by connecting shafts (520) for rotational connection; the connecting shafts (520) are located inside the linkage frame (510) and are fixedly connected to sealing plates (522) on their outer surfaces; one end of the connecting shaft (520) away from the linkage frame (510) is penetrated by connecting shafts (520) for rotational connection to the purification box (1); and one end of the connecting shaft (520) away from the linkage frame (510) is located inside the mounting shell (4).

3. The exhaust gas purification device for a twin-screw extruder according to claim 2, characterized in that: The outer surface of the connecting shaft (520) is provided with an arc groove (521), and the outer surface of the connecting shaft (520) is sleeved with a ring (519). The ring (519) is slidably connected to the outer surface of the connecting shaft (520) through the arc groove (521). The lower end of the ring (519) is fixedly connected to a vertical plate (516), and the lower end of the vertical plate (516) is slidably connected to a support column (517). The support column (517) is fixedly connected to the side wall of the purification box (1). The outer surface of the support column (517) is sleeved with a first spring (518), and the first spring (518) is fixedly connected between the vertical plate (516) and the purification box (1).

4. The exhaust gas purification device for a twin-screw extruder according to claim 3, characterized in that: The vertical plate (516) is fixedly connected to a fixed column (515) on one side away from the purification box (1), and the fixed column (515) is fitted with a cam (514) on one end away from the vertical plate (516). A rotating shaft (507) is passed through and fixedly connected between the cams (514), and the rotating shaft (507) is passed through and rotatably connected to the mounting shell (4). The cams (514) are distributed in a circular staggered manner relative to each other.

5. The exhaust gas purification device for a twin-screw extruder according to claim 4, characterized in that: One end of the rotating shaft (507) is fixedly connected to a linkage plate (506); the outer surface of the linkage plate (506) is provided with a ring-shaped limit groove (508) and a groove (509) at equal intervals; the limit groove (508) and the groove (509) are alternately distributed; a disk (503) is provided on one side of the linkage plate (506); the disk (503) and the limit groove (508) are matched; and the disk (503) is fixedly connected to the side close to the mounting shell (4). A connecting plate (504) is fixedly connected thereto; a lever (505) is fixedly connected to the side of the connecting plate (504) away from the mounting shell (4); the lever (505) and the groove (509) are matched; a driving motor (502) is fixedly connected to the side of the disc (503) away from the mounting shell (4); a support frame (501) is fixedly connected to the driving motor (502); and the support frame (501) is fixedly connected to the side wall of the mounting shell (4).

6. The exhaust gas purification device for a twin-screw extruder according to claim 1, characterized in that: The activated carbon condition detection mechanism comprises symmetrically arranged lifting columns (609), wherein the lifting columns (609) are fixedly connected to the lower end surface of the frame (512), and the lifting columns (609) are slidably connected to the linkage frame (510), and cavities (611) are provided on both sides of the linkage frame (510), and the lower ends of the lifting columns (609) are located in the cavities (611).

7. The exhaust gas purification device for a twin-screw extruder according to claim 6, characterized in that: The outer surface of the lifting column (609) is sleeved with a second spring (610), the upper end of the second spring (610) is fixedly connected to the lower end surface of the frame (512), and the lower end of the second spring (610) is fixedly connected to the upper end surface of the linkage frame (510).

8. The exhaust gas purification device for a twin-screw extruder according to claim 7, characterized in that: Hollow columns (601) are fixedly connected to both sides of the linkage frame (510), and the hollow columns (601) are connected to the cavity (611). The hollow columns (601) are fixedly connected to the purification box (1), and the ends of the hollow columns (601) away from the linkage frame (510) are slidably connected to the top rod (602).

9. The exhaust gas purification device for a twin-screw extruder according to claim 8, characterized in that: A button (612) is provided on the side of the push rod (602) away from the hollow column (601), and a mounting frame (604) is fixedly connected to the button (612). The mounting frame (604) is fixedly connected to the side wall of the purification box (1), and a display light (605) is fixedly connected to the side of the mounting frame (604) away from the button (612), and the display light (605) is electrically connected to the button (612).

10. The exhaust gas purification device for a twin-screw extruder according to claim 9, characterized in that: The outer surface of one of the top rods (602) is fixedly connected to a connecting block (603), the lower end of the connecting block (603) is rotatably connected to a connecting rod (606), the end of the connecting rod (606) away from the connecting block (603) is rotatably connected to a dial plate (608), the dial plate (608) is attached to the surface of the main switch (7), vertical rails (607) are arranged on both sides of the dial plate (608), the vertical rails (607) are fixedly connected to the side walls of the purification box (1), and the dial plate (608) is slidably connected between the two vertical rails (607).

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