Intaglio printing waste gas recovery system

Abstract

The utility model provides an intaglio printing waste gas recovery system, and relates to the technical field of waste gas recovery. A dust removal box is fixed to the upper end of the bottom frame, a dust collection hopper is installed at the lower end of the dust removal box, a discharging hopper is welded to the lower end of the dust collection hopper, side plates are welded to the left side and the right side of the discharging hopper correspondingly, two clamping frames are installed on the side plates through bolts, a first hydraulic rod is installed between the two clamping frames, and clamping plates are fixed to the lower ends of the two clamping frames correspondingly. According to the utility model, impurities in waste gas are filtered through the filter cartridge, the motor II is operated to enable the rotating rod to rotate, the cam on the rotating rod ejects the convex seat, and the connecting arm reciprocates under the action of the tension spring, so that the framework shakes up and down, and the impurities in the filter cartridge can be shaken off into the discharge hopper below; a collecting bag is clamped at the lower end of the discharging hopper by shrinking a first hydraulic rod, impurities are collected through the collecting bag, the impurities of the filter cartridge are conveniently cleaned, and maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas recovery, in particular to a gravure printing waste gas recovery system. Background Art

[0002] The oven of a gravure printing machine is composed of a housing, a supporting roller, a blowing port and an exhaust pipe. The substrate (film) enters from the bottom inlet of the oven, is blown by high-temperature air to achieve the purpose of drying, and then exits from the oven outlet. Under the action of the turning guide roller and the supporting roller, the substrate completes the printing of each color on the entire printing line. Due to the relatively high speed of the printing machine, even when the oven is under negative pressure, due to the high-speed movement of the substrate (film) and the friction with the air, waste gas will be carried out of the oven by the printing film under the action of friction, and volatilizing into the workshop will affect the production environment. Therefore, a gravure printing waste gas recovery device is designed.

[0003] When the existing waste gas recovery device recovers the gravure printing waste gas, it usually uses a filter screen or an activated carbon layer to preliminarily filter the waste gas. The impurities on the filter screen and the activated carbon layer are inconvenient to clean, and the filter screen and the activated carbon layer need to be replaced frequently, resulting in high costs and troublesome maintenance. Summary of the Invention

[0004] This application relates to a gravure printing waste gas recovery system to solve the problems that when the existing waste gas recovery device recovers the gravure printing waste gas, it usually uses a filter screen or an activated carbon layer to preliminarily filter the waste gas, the impurities on the filter screen and the activated carbon layer are inconvenient to clean, the filter screen and the activated carbon layer need to be replaced frequently, resulting in high costs and troublesome maintenance.

[0005] This application provides a gravure printing waste gas recovery system, which specifically includes: a chassis;

[0006] A dust removal box is fixed at the upper end of the chassis. A dust collection hopper is installed at the lower end of the dust removal box. A discharge hopper is welded at the lower end of the dust collection hopper. Side plates are welded on both the left and right sides of the discharge hopper. Two groups of clamping brackets are installed on the side plates through bolts. A first hydraulic rod is installed between the two groups of clamping brackets. Clamping plates are fixed at the lower ends of the two groups of clamping brackets. An air inlet pipe is arranged at the right end of the dust removal box. An air inlet valve is installed on the air inlet pipe. A cooling cylinder is connected to the air inlet valve. An end cover is installed at the right end of the cooling cylinder through bolts. An isolation cylinder is fixed inside the cooling cylinder. A cover plate is fixed on the isolation cylinder. An annular spray rack is fixed inside the isolation cylinder. A liquid inlet pipe is connected to the annular spray rack. A connector is connected to the liquid inlet pipe. A first solenoid valve is installed on the connector. A filter is connected to the first solenoid valve. The liquid inlet end of the filter is connected to a conduit, and the conduit is connected to an external coolant supply device.

[0007] In at least some embodiments,

[0008] A cylinder is connected to the end cover. A fixed disk is fixed inside the cylinder. Through holes are provided on the fixed disk. A first motor is installed on the fixed disk by bolts. A fan blade is installed on the output shaft of the first motor. A connecting pipe is installed on the cylinder and is connected to the exhaust pipe of the gravure printing machine.

[0009] In at least some embodiments,

[0010] A top frame and a skeleton are fixed inside the dust removal box. A filter cartridge is installed at the lower end of the skeleton by bolts. A bottom plate is installed at the lower end of the filter cartridge by bolts. A shaking component is installed at the lower end of the top frame.

[0011] In at least some embodiments,

[0012] The shaking component includes a first support plate, a first partition plate, a second support plate, and a second partition plate. The upper end of the first support plate is installed at the lower end of the top frame by bolts. There are six groups of the first support plates. The first partition plate is installed at the lower ends of the six groups of first support plates by bolts. There are four groups of the second support plates. The upper ends of the four groups of second support plates are installed at the lower end of the first partition plate by bolts. The second partition plate is installed at the lower ends of the four groups of second support plates by bolts.

[0013] In at least some embodiments,

[0014] A second motor is installed at the lower end of the top frame by bolts. A pulley is installed on the output shaft of the second motor. A first bearing seat is installed on the top frame. A pulley is installed on the first bearing seat through a bearing. A belt is connected between the two pulleys. And a sprocket is installed on the rotating shaft of the pulley. A second bearing seat is installed at the upper end of the first partition plate by bolts. A first transmission column is installed on the second bearing seat. A sprocket and a bevel gear are installed on the first transmission column. A transmission chain is connected between the two sprockets. And a second transmission column is installed on the first partition plate by bolts. Bevel gears are installed at both the upper and lower ends of the second transmission column. The bevel gear at the upper end of the second transmission column meshes with the bevel gear on the first transmission column.

[0015] In at least some embodiments,

[0016] Two third bearing seats are installed at the lower end of the first partition plate by bolts. A rotating rod is installed between the two third bearing seats. A bevel gear is installed on the rotating rod. The bevel gear on the rotating rod meshes with the bevel gear at the lower end of the second transmission column. And cams are fixed at both the left and right ends of the rotating rod. Two fourth bearing seats are installed on the second partition plate by bolts. Connecting arms are installed on the two fourth bearing seats. A raised seat is fixed on the connecting arm. The raised seat contacts the cam.

[0017] In at least some embodiments,

[0018] A tension spring is installed between the connecting arm and the first partition plate. A chute is provided on the connecting arm, and two groups of sleeves are fixed on the second partition plate. Suspension rods slide in the two groups of sleeves. The upper ends of the suspension rods are connected to the chute on the connecting arm, and the lower ends of the two groups of suspension rods are connected to the skeleton.

[0019] In at least some embodiments,

[0020] The left side of the dust removal box is installed with a purification box through bolts, and the upper end of the dust removal box is installed with a first blower through bolts. The left end of the purification box is installed with a second blower through bolts. The air outlet end of the first blower is connected to the upper end of the purification box. A fixed plate is fixed at the lower end of the purification box. A liquid collecting hopper is installed on the fixed plate. A discharge pipe is installed at the lower end of the liquid collecting hopper, and a second solenoid valve is installed on the discharge pipe.

[0021] In at least some embodiments,

[0022] A cylinder base is installed inside the purification box through bolts. An installation plate is installed at the lower end of the cylinder base through bolts. A first slider and a second slider slide at the lower end of the installation plate. Tooth plates are fixed on both the first slider and the second slider. A central rod is installed in the cylinder base through a bearing. A gear is installed on the central rod. The gear on the central rod meshes with the tooth plates on the first slider and the second slider. A second hydraulic rod is installed on the installation plate. The piston rod of the second hydraulic rod is connected to the first slider. A rotating plate is fixed at the lower end of the central rod, and a spray head is installed on the rotating plate.

[0023] The utility model discloses a gravure printing waste gas recovery system, including the following steps:

[0024] 1), When the gravure printing machine is in use, the waste gas generated enters the interior of the dust removal box through the intake pipe. The first motor is operated to make the fan blades rotate, accelerating the transmission of the waste gas;

[0025] 2), Coolant is provided to the annular spray rack through a conduit, and the waste gas is cooled by the coolant;

[0026] 3), The cooled waste gas enters the interior of the dust removal box. The impurities in the waste gas are filtered through the filter cartridge. The second motor is operated to make the rotating rod rotate. The cam on the rotating rod pushes the convex seat, and under the action of the tension spring, the connecting arm reciprocates, realizing the up and down shaking of the skeleton, and being able to shake the impurities in the filter cartridge into the lower discharge hopper. The collection bag is clamped at the lower end of the discharge hopper by retracting the first hydraulic rod, and the impurities are collected through the collection bag;

[0027] 4) The waste gas filtered by the filter cartridge is blown into the purification box by the first fan, and the purification liquid is sprayed through the nozzle. The purification liquid is mixed and purified with the harmful substances in the waste gas in the purification box. The telescopic second hydraulic rod can rotate the rotating plate to make the purification liquid fully mix with the waste gas. The purified gas is discharged through the second fan, and the purification liquid is collected through the liquid collecting hopper.

[0028] The utility model provides a gravure printing waste gas recovery system, which has the following beneficial effects:

[0029] In the utility model, a top frame and a framework are fixed inside the dust removal box. The lower end of the framework is installed with a filter cartridge through bolts, and the lower end of the filter cartridge is installed with a bottom plate through bolts. The lower end of the top frame is installed with a shaking component. During use, the impurities in the waste gas are filtered by the filter cartridge. The second motor is operated to rotate the rotating rod. The cam on the rotating rod pushes the convex seat, and under the action of the tension spring, the connecting arm reciprocates, realizing the up and down shaking of the framework, and the impurities in the filter cartridge can be shaken off into the lower discharge hopper. The collecting bag is clamped at the lower end of the discharge hopper by retracting the first hydraulic rod, and the impurities are collected through the collecting bag, which is convenient for cleaning the impurities in the filter cartridge and easy to maintain.

[0030] In addition, in the utility model, the cooling liquid is provided to the annular spray rack through the conduit, the waste gas is cooled by the cooling liquid, the purification liquid is sprayed through the nozzle, and the purification liquid is mixed and purified with the harmful substances in the waste gas in the purification box, improving the purification effect and preventing the waste gas from polluting the environment. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.

[0032] The drawings in the following description only relate to some embodiments of the present utility model and do not limit the present utility model.

[0033] In the drawings:

[0034] Figure 1 is the overall structural schematic diagram of the gravure printing waste gas recovery equipment of the embodiment of the present utility model;

[0035] Figure 2 is the structural schematic diagram after the cooling cylinder of the gravure printing waste gas recovery equipment of the embodiment of the present utility model is disassembled;

[0036] Figure 3 is the gravure printing waste gas recovery equipment of the embodiment of the present utility model Figure 2 The enlarged structural schematic diagram at A therein;

[0037] Figure 4 is the gravure printing waste gas recovery equipment of the embodiment of the present utility model Figure 2Schematic diagram of the enlarged structure at B;

[0038] Figure 5 Schematic diagram of the structure of the connector of the gravure waste gas recovery equipment in the embodiment of the present utility model;

[0039] Figure 6 Schematic diagram of the structure of the framework of the gravure waste gas recovery equipment in the embodiment of the present utility model;

[0040] Figure 7 Schematic diagram of the structure of the shaking component of the gravure waste gas recovery equipment in the embodiment of the present utility model;

[0041] Figure 8 is the gravure waste gas recovery equipment in the embodiment of the present utility model Figure 7 Schematic diagram of the enlarged structure at C;

[0042] Figure 9 Schematic diagram of the structure of the discharge hopper of the gravure waste gas recovery equipment in the embodiment of the present utility model;

[0043] Figure 10 Schematic diagram of the internal structure of the purification box of the gravure waste gas recovery equipment in the embodiment of the present utility model;

[0044] Figure 11 Schematic diagram of the structure of the mounting plate of the gravure waste gas recovery equipment in the embodiment of the present utility model.

[0045] List of reference numerals

[0046] 1. Chassis; 11. Dust removal box; 111. Top frame; 112. Framework; 113. Filter cartridge; 114. Bottom plate; 12. Dust collection hopper; 121. Discharge hopper; 1211. Side plate; 1212. Clamping frame; 1213. First hydraulic rod; 1214. Clamping plate; 13. Inlet pipe; 131. Inlet valve; 132. Cooling cylinder; 1321. Isolation cylinder; 1322. Cover plate; 1323. Ring spray rack; 1324. Liquid inlet pipe; 1325. Connector; 1326. First solenoid valve; 1327. Filter; 1328. Duct; 133. End cover; 134. Cylinder body; 1341. Fixed disk; 1342. First motor; 1343. Fan blade; 135. Connecting pipe;

[0047] 2. Shaking component; 21. First support plate; 211. Second motor; 212. First bearing seat; 213. Second bearing seat; 2131. First transmission column; 2132. Second transmission column; 22. First partition; 221. Second bearing seat; 222. Rotating rod; 223. Cam; 23. Second support plate; 24. Second partition; 241. Fourth bearing seat; 242. Connecting arm; 2421. Protrusion seat; 243. Sleeve; 2431. Suspension rod;

[0048] 3. First fan

[0049] 4. Purification box; 41. Second fan; 42. Fixed plate; 43. Liquid collecting hopper; 431. Discharge pipe; 432. Second solenoid valve; 44. Cylinder base; 441. Mounting plate; 442. First slider; 443. Second slider; 444. Central rod; 445. Second hydraulic rod; 45. Rotating plate; 451. Sprinkler head Detailed implementation manners

[0050] For the purposes, technical solutions and advantages of the embodiments of the present utility model to be more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings of the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model

[0051] Please refer to Figures 1 to 11 :

[0052] Embodiment 1

[0053] The present utility model provides a gravure printing waste gas recovery system, including: chassis 1

[0054] A dust removal box 11 is fixed at the upper end of the chassis 1. A dust collecting hopper 12 is installed at the lower end of the dust removal box 11. A discharge hopper 121 is welded at the lower end of the dust collecting hopper 12. Side plates 1211 are welded on both the left and right sides of the discharge hopper 121. Two groups of clamping brackets 1212 are installed on the side plates 1211 through bolts. A first hydraulic rod 1213 is installed between the two groups of clamping brackets 1212. And clamping plates 1214 are fixed at the lower ends of the two groups of clamping brackets 1212. An air inlet pipe 13 is provided at the right end of the dust removal box 11. An air inlet valve 131 is installed on the air inlet pipe 13. A cooling cylinder 132 is connected to the air inlet valve 131. An end cover 133 is installed at the right end of the cooling cylinder 132 through bolts. An isolation cylinder 1321 is fixed inside the cooling cylinder 132. A cover plate 1322 is fixed on the isolation cylinder 1321. An annular spray rack 1323 is fixed inside the isolation cylinder 1321. A liquid inlet pipe 1324 is connected to the annular spray rack 1323. A connector 1325 is connected to the liquid inlet pipe 1324. A first solenoid valve 1326 is installed on the connector 1325. A filter 1327 is connected to the first solenoid valve 1326. The liquid inlet end of the filter 1327 is connected to a conduit 1328. The conduit 1328 is connected to an external coolant supply device

[0055] A cylinder body 134 is connected to the end cover 133. A fixed disk 1341 is fixed inside the cylinder body 134. Through holes are provided on the fixed disk 1341. A first motor 1342 is installed on the fixed disk 1341 by bolts. A fan blade 1343 is installed on the output shaft of the first motor 1342. A connecting pipe 135 is installed on the cylinder body 134. The connecting pipe 135 is connected to the exhaust pipe of the gravure printing machine. A top frame 111 and a framework 112 are fixed inside the dust removal box 11. A filter cartridge 113 is installed at the lower end of the framework 112 by bolts. A bottom plate 114 is installed at the lower end of the filter cartridge 113 by bolts. A shaking component 2 is installed at the lower end of the top frame 111.

[0056] Embodiment 2, on the basis of Embodiment 1,

[0057] The jitter component 2 includes a first support plate 21, a first partition plate 22, a second support plate 23, and a second partition plate 24. The upper end of the first support plate 21 is installed at the lower end of the top frame 111 by bolts. There are six groups of the first support plates 21. The first partition plate 22 is installed at the lower ends of the six groups of first support plates 21 by bolts. There are four groups of the second support plates 23. The upper ends of the four groups of second support plates 23 are installed at the lower end of the first partition plate 22 by bolts. The second partition plate 24 is installed at the lower ends of the four groups of second support plates 23 by bolts. A second motor 211 is installed at the lower end of the top frame 111 by bolts. A pulley is installed on the output shaft of the second motor 211. A first bearing seat 212 is installed on the top frame 111. A pulley is installed on the first bearing seat 212 through a bearing. A belt is connected between the two pulleys. And a sprocket is installed on the rotating shaft of the pulley. A second bearing seat 213 is installed at the upper end of the first partition plate 22 by bolts. A first transmission column 2131 is installed on the second bearing seat 213. A sprocket and a bevel gear are installed on the first transmission column 2131. A transmission chain is connected between the two sprockets. And a second transmission column 2132 is installed on the first partition plate 22 by bolts. Bevel gears are installed at both the upper and lower ends of the second transmission column 2132. The bevel gear at the upper end of the second transmission column 2132 meshes with the bevel gear on the first transmission column 2131. Two third bearing seats 221 are installed at the lower end of the first partition plate 22 by bolts. A rotating rod 222 is installed between the two third bearing seats 221. A bevel gear is installed on the rotating rod 222. The bevel gear on the rotating rod 222 meshes with the bevel gear at the lower end of the second transmission column 2132. And cams 223 are fixed at both the left and right ends of the rotating rod 222. Two fourth bearing seats 241 are installed on the second partition plate 24 by bolts. Connecting arms 242 are installed on the two fourth bearing seats 241. A protruding seat 2421 is fixed on the connecting arm 242. The protruding seat 2421 contacts the cam 223. A tension spring is installed between the connecting arm 242 and the first partition plate 22. A chute is provided on the connecting arm 242. Two sleeves 243 are fixed on the second partition plate 24. Suspension rods 2431 slide in the two sleeves 243. The upper ends of the two suspension rods 2431 are connected to the chute on the connecting arm 242. The lower ends of the two suspension rods 2431 are connected to the skeleton 112. Its function is: impurities in the waste gas are filtered by the filter cartridge 113. The second motor 211 is operated to rotate the rotating rod 222. The cam 223 on the rotating rod 222 pushes the protruding seat 2421, and under the action of the tension spring, the connecting arm 242 reciprocates, realizing the up and down jitter of the skeleton 112, and being able to shake off the impurities in the filter cartridge 113 into the lower discharge hopper 121.

[0058] Example 3, on the basis of Example 1 and Example 2,

[0059] On the left side of the dust removal box 11, a purification box 4 is installed by bolts, and on the upper end of the dust removal box 11, a first fan 3 is installed by bolts. On the left end of the purification box 4, a second fan 41 is installed by bolts. The air outlet end of the first fan 3 is connected to the upper end of the purification box 4. A fixed plate 42 is fixed at the lower end of the purification box 4. A liquid collecting hopper 43 is installed on the fixed plate 42. A discharge pipe 431 is installed at the lower end of the liquid collecting hopper 43. A second solenoid valve 432 is installed on the discharge pipe 431. Inside the purification box 4, a cylinder base 44 is installed by bolts. At the lower end of the cylinder base 44, a mounting plate 441 is installed by bolts. A first slider 442 and a second slider 443 slide at the lower end of the mounting plate 441. Tooth plates are fixed on both the first slider 442 and the second slider 443. Inside the cylinder base 44, a central rod 444 is installed through a bearing. A gear is installed on the central rod 444. The gear on the central rod 444 meshes with the tooth plates on the first slider 442 and the second slider 443. A second hydraulic rod 445 is installed on the mounting plate 441. The piston rod of the second hydraulic rod 445 is connected to the first slider 442. A rotating plate 45 is fixed at the lower end of the central rod 444. A spray head 451 is installed on the rotating plate 45. Its function is: The waste gas filtered by the filter cartridge 113 is blown into the purification box 4 by the first fan 3, and the purification liquid is sprayed through the spray head 451. The purification liquid is mixed with the harmful substances in the waste gas in the purification box 4 for purification. The telescopic second hydraulic rod 445 can make the rotating plate 45 rotate, so that the purification liquid is fully mixed with the waste gas. The purified gas is discharged through the second fan 41, and the purification liquid is collected through the liquid collecting hopper 43.

[0060] The present application discloses a gravure printing waste gas recovery system, and its use includes the following steps:

[0061] 1), The waste gas generated when the gravure printing machine is in use enters the interior of the dust removal box 11 through the intake pipe 13. The first motor 1342 is operated to make the fan blade 1343 rotate, accelerating the transmission of the waste gas;

[0062] 2), Coolant is provided to the annular spray rack 1323 through the conduit 1328, and the waste gas is cooled by the coolant;

[0063] 3), The cooled waste gas enters the interior of the dust removal box 11. The impurities in the waste gas are filtered by the filter cartridge 113. The second motor 211 is operated to make the rotating rod 222 rotate. The cam 223 on the rotating rod 222 pushes the convex seat 2421, and under the action of the tension spring, the connecting arm 242 reciprocates, realizing the up and down shaking of the skeleton 112, and the impurities in the filter cartridge 113 can be shaken off into the lower discharge hopper 121. The collection bag is clamped at the lower end of the discharge hopper 121 by retracting the first hydraulic rod 1213, and the impurities are collected through the collection bag;

[0064] 4), The waste gas filtered by the filter cartridge 113 is blown into the purification box 4 by the first fan 3, and the purification liquid is sprayed through the nozzle 451. The purification liquid is mixed with the harmful substances in the waste gas in the purification box 4 for purification. The telescopic second hydraulic rod 445 can rotate the rotating plate 45 to make the purification liquid fully mix with the waste gas. The purified gas is discharged through the second fan 41, and the purification liquid is collected through the liquid collecting hopper 43.

[0065] The working principle of this embodiment: When in use, the waste gas generated by the gravure printing machine enters the dust removal box 11 through the air inlet pipe 13. The first motor 1342 is operated to make the fan blades 1343 rotate, accelerating the transmission of the waste gas. The coolant is supplied to the annular spray rack 1323 through the conduit 1328, and the waste gas is cooled by the coolant. The cooled waste gas enters the dust removal box 11, and the impurities in the waste gas are filtered by the filter cartridge 113. The second motor 211 is operated to make the rotating rod 222 rotate. The cam 223 on the rotating rod 222 pushes the convex seat 2421, and under the action of the tension spring, the connecting arm 242 reciprocates, realizing the up and down shaking of the framework 112, and the impurities in the filter cartridge 113 can be shaken off into the lower discharge hopper 121. The collection bag is clamped at the lower end of the discharge hopper 121 by retracting the first hydraulic rod 1213, and the impurities are collected through the collection bag. The waste gas filtered by the filter cartridge 113 is blown into the purification box 4 by the first fan 3, and the purification liquid is sprayed through the nozzle 451. The purification liquid is mixed with the harmful substances in the waste gas in the purification box 4 for purification. The telescopic second hydraulic rod 445 can rotate the rotating plate 45 to make the purification liquid fully mix with the waste gas. The purified gas is discharged through the second fan 41, and the purification liquid is collected through the liquid collecting hopper 43.

[0066] In this article, the following points need to be noted:

[0067] 1. The attached drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0068] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0069] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure.

Claims

1. A gravure printing waste gas recovery system, comprising: The chassis (1) is characterized in that: A dust box (11) is fixed to the upper end of the base frame (1), a dust collecting hopper (12) is installed at the lower end of the dust collecting hopper (11), a discharge hopper (121) is welded to the lower end of the dust collecting hopper (12), side plates (1211) are welded to the left and right sides of the discharge hopper (121), two groups of clamping frames (1212) are installed on the side plates (1211) by bolts, a No. 1 hydraulic rod (1213) is installed between the two groups of clamping frames (1212), and the two groups of clamping frames (1212) are connected to the upper and lower ends of the dust collecting hopper (1212). A clamping plate (1214) is fixed at the lower end of each of the dust removal boxes (11); an air intake pipe (13) is arranged at the right end of the dust removal box (11); an air intake valve (131) is installed on the air intake pipe (13); a cooling cylinder (132) is connected to the air intake valve (131); an end cover (133) is installed at the right end of the cooling cylinder (132) by bolts; an isolation cylinder (1321) is fixed inside the cooling cylinder (132); a cover plate (1322) is fixed on the isolation cylinder (1321); and the isolation cylinder (1321) An annular spray rack (1323) is fixed inside the annular spray rack (1323), a liquid inlet pipe (1324) is connected to the annular spray rack (1323), a connector (1325) is connected to the liquid inlet pipe (1324), a No. 1 solenoid valve (1326) is installed on the connector (1325), a filter (1327) is connected to the No. 1 solenoid valve (1326), a liquid inlet end of the filter (1327) is connected to a conduit (1328), and the conduit (1328) is connected to an external coolant supply device The end cover (133) is connected with a cylinder (134), a fixed disk (1341) is fixed inside the cylinder (134), a through hole is provided on the fixed disk (1341), a No. 1 motor (1342) is installed on the fixed disk (1341) by bolts, a fan (1343) is installed on the output shaft of the No. 1 motor (1342), a connecting pipe (135) is installed on the cylinder (134), and the connecting pipe (135) is connected with the exhaust pipe of the gravure printing machine.

2. The gravure printing waste gas recovery system according to claim 1, characterized in that: A top frame (111) and a frame (112) are fixed inside the dust removal box (11); a filter cartridge (113) is installed at the lower end of the frame (112) via bolts; a bottom plate (114) is installed at the lower end of the filter cartridge (113) via bolts; and a shaking component (2) is installed at the lower end of the top frame (111).

3. The gravure printing waste gas recovery system according to claim 2, characterized in that: The shaking component (2) comprises a No. 1 support plate (21), a first partition plate (22), a No. 2 support plate (23) and a second partition plate (24); the upper end of the No. 1 support plate (21) is mounted on the lower end of the top frame (111) by bolts; six groups of the No. 1 support plates (21) are provided; the first partition plate (22) is mounted on the lower ends of the six groups of the No. 1 support plates (21) by bolts; four groups of the No. 2 support plates (23) are provided; the upper ends of the four groups of the No. 2 support plates (23) are mounted on the lower ends of the first partition plate (22) by bolts; and the second partition plate (24) is mounted on the lower ends of the four groups of the No. 2 support plates (23) by bolts.

4. The gravure printing waste gas recovery system according to claim 3, characterized in that: A No. 2 motor (211) is mounted on the lower end of the top frame (111) by bolts, a pulley is mounted on the output shaft of the No. 2 motor (211), a No. 1 bearing seat (212) is mounted on the top frame (111), a pulley is mounted on the No. 1 bearing seat (212) via a bearing, a belt is connected between the two sets of pulleys, and a sprocket is mounted on the rotating shaft of the pulley, a No. 2 bearing seat (213) is mounted on the upper end of the first partition plate (22) by bolts, a No. 1 transmission column (2131) is mounted on the No. 2 bearing seat (213), a sprocket and a bevel gear are mounted on the No. 1 transmission column (2131), a transmission chain is connected between the two sets of sprockets, and a No. 2 transmission column (2132) is mounted on the first partition plate (22) by bolts, bevel gears are mounted on the upper and lower ends of the No. 2 transmission column (2132), and the bevel gear on the upper end of the No. 2 transmission column (2132) meshes with the bevel gear on the No. 1 transmission column (2131).

5. The gravure printing waste gas recovery system according to claim 4, characterized in that: Two groups of No. 3 bearing seats (221) are installed at the lower end of the first partition plate (22) by bolts, a rotating rod (222) is installed between the two groups of No. 3 bearing seats (221), a bevel gear is installed on the rotating rod (222), the bevel gear on the rotating rod (222) is meshed with the bevel gear at the lower end of the No. 2 transmission column (2132), and cams (223) are fixed to the left and right ends of the rotating rod (222), and two groups of No. 4 bearing seats (241) are installed on the second partition plate (24) by bolts, connecting arms (242) are installed on the two groups of No. 4 bearing seats (241), a protruding seat (2421) is fixed on the connecting arm (242), and the protruding seat (2421) contacts the cam (223).

6. The gravure printing waste gas recovery system according to claim 5, characterized in that: A tension spring is installed between the connecting arm (242) and the first partition (22), a slide groove is arranged on the connecting arm (242), two groups of sleeves (243) are fixed on the second partition (24), a suspension rod (2431) slides inside the two groups of sleeves (243), the upper end of the suspension rod (2431) is connected to the slide groove on the connecting arm (242), and the lower ends of the two groups of suspension rods (2431) are connected to the frame (112).

7. The gravure printing waste gas recovery system according to claim 2, characterized in that: The left side of the dust removal box (11) is installed with a purification box (4) by bolts, and the upper end of the dust removal box (11) is installed with a first fan (3) by bolts, and the left end of the purification box (4) is installed with a second fan (41) by bolts, the air outlet end of the first fan (3) is connected to the upper end of the purification box (4), the lower end of the purification box (4) is fixed with a fixing plate (42), a liquid collecting hopper (43) is installed on the fixing plate (42), a discharge pipe (431) is installed at the lower end of the liquid collecting hopper (43), and a No. 2 solenoid valve (432) is installed on the discharge pipe (431).

8. The gravure printing waste gas recovery system according to claim 7, characterized in that: A cartridge seat (44) is installed inside the purification box (4) by bolts, and a mounting plate (441) is installed at the lower end of the cartridge seat (44) by bolts. A first slider (442) and a second slider (443) are slidably mounted at the lower end of the mounting plate (441), and tooth plates are fixed on the first slider (442) and the second slider (443). A center rod (444) is installed inside the cartridge seat (44) by bearings, and a gear is installed on the center rod (444). The gear on the center rod (444) meshes with the tooth plates on the first slider (442) and the second slider (443). A No. 2 hydraulic rod (445) is installed on the mounting plate (441), and the piston rod of the No. 2 hydraulic rod (445) is connected to the first slider (442). A rotating plate (45) is fixed at the lower end of the center rod (444), and a nozzle (451) is installed on the rotating plate (45).

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