Printing machine waste gas treatment device

Abstract

The utility model discloses a waste gas treatment device for a printing machine, which relates to the technical field of printing machines and comprises a treatment box, an air suction pipe is fixedly connected to the bottom of the treatment box, an air suction cover is fixedly mounted at one end of the air suction pipe, and a first connecting pipe is fixedly mounted at the top of the treatment box. And the treatment box is fixedly connected with a dry filter through a first connecting pipe. By arranging the treatment box, the dry filter and the activated carbon adsorption box, waste gas of the printing machine is pumped into the treatment box through the air blower and subjected to chemical reaction through the filler absorption layer from bottom to top, and unpurified waste gas rises to the nozzle area and is sprayed by spraying liquid conveyed by the water pump, so that part of pollutants are dissolved and cooled; after pretreatment, particles and water vapor are precisely removed from the waste gas through a dry filter, then the waste gas enters an activated carbon adsorption box, residual non-water-soluble organic matter is efficiently adsorbed by activated carbon, and deep purification is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing machine technical field especially relates to a printing machine waste gas treatment device. BACKGROUND

[0002] Although water-based ink is more environmentally friendly than solvent-based ink in the printing process, it still emits volatile organic compounds VOCs and low-concentration odor substances, especially in the drying link, the evaporation of water will bring out organic additives such as alcohol and ether, forming waste gas with complex composition, concentration fluctuation and large gas volume. If such waste gas is directly discharged, it not only pollutes the environment, but also may affect the air quality of the workplace and the surrounding residents' life. With the increasingly stringent environmental regulations and the increasing demand for sustainable development of enterprises, it is particularly urgent to develop a high-efficiency, stable and suitable treatment device for the characteristics of water-based ink printing machine waste gas.

[0003] After searching, the utility model patent with authorization announcement No. CN221137266U relates to a printing machine waste gas treatment equipment online device in the printing machine technical field. The utility model discloses a base, the base is provided with a printing machine, the base is provided with a control mechanism, a suction mechanism and a filtering mechanism;The control mechanism includes a fixed component and a switch component, the fixed component includes a plurality of first supporting legs fixedly installed on the top of the base, the top of the first supporting leg is fixedly connected with the printing machine, and two first reinforcing plates are fixedly installed on the side of the first supporting leg close to each other, and the left side of the printing machine is fixedly installed with a control box. The utility model discloses a printing machine waste gas treatment equipment online device that can quickly replace or clean the filter screen by setting control mechanism, suction mechanism and filtering mechanism.

[0004] The comparison file adopts the simple two-stage filtration of impurity filter screen and activated carbon filter screen, which is only suitable for removing solid particulate matter and adsorbing part of organic waste gas. For water-soluble VOCs, such as alcohol, ketone or high-concentration complex waste gas, the treatment effect is limited, and the treatment efficiency is low. In view of this, the present application further proposes a printing machine waste gas treatment device based on the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a printing machine waste gas treatment device to solve the shortcomings in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A printing machine exhaust treatment device, including treatment box, treatment box bottom fixed connection has suction pipe, suction pipe one end fixed installation has suction cover, treatment box top fixed installation has first connecting pipe, treatment box through first connecting pipe fixed connection has dry filter, dry filter end fixed installation has second connecting pipe, dry filter through second connecting pipe fixed connection has activated carbon adsorption tank, activated carbon adsorption tank top fixed installation has third connecting pipe, third connecting pipe one end fixed connection has air blower, air blower air outlet fixed installation has exhaust pipe;

[0008] The water tank is internally connected with a water pump through a pipeline, the output end of the water pump is fixedly connected with a main pipe, a branch pipe is connected to the main pipe, one end of the branch pipe penetrates through the treatment box and extends into the treatment box, a plurality of water spraying pipes are fixedly installed on the branch pipe, a plurality of nozzles are fixedly installed below the water spraying pipes, and a filler absorption layer is fixedly installed in the treatment box.

[0009] Further, the filter pipe is fixedly installed at the bottom of the treatment box, one end of the filter pipe is fixedly connected with a filter box, and a recovery pipe is fixedly installed between the filter box and the water tank.

[0010] Further, the treatment box comprises a first box body, a second box body and a third box body from bottom to top, the number of branch pipes is at least two, and the filler absorption layer is correspondingly arranged below each group of nozzles.

[0011] Further, the filler absorption layer is composed of porous inert filler.

[0012] Further, a positioning ring is fixedly installed in the third box body, and a plurality of inclined plates in annular array are fixedly installed in the positioning ring.

[0013] Further, the bottom of the first box body is inclined downward and arranged towards the filter pipe.

[0014] Further, connecting ears are welded to the outer sides of the first box body, the second box body and the third box body, a screw rod is arranged between the connecting ears, and nuts are threadedly connected to the upper and lower ends of the screw rod.

[0015] Further, protrusions are fixedly installed at the upper and lower ends of the second box body, recesses matched with the protrusions are arranged on the first box body and the third box body.

[0016] Further, a conical cover is fixedly installed at the top end of the exhaust pipe.

[0017] The printing machine exhaust treatment device has the advantages that:

[0018] 1.The utility model discloses a handle waste gas of printing machine through setting processing box, dry filter, activated carbon adsorption box, the waste gas of printing machine is under the power of air -blower, first through the suction pipe is drawn into processing box, and the waste gas flows from below to top, first passes through the filler absorption layer, and the chemical reaction is generated with it, and the waste gas that is not completely purified rises to the nozzle place, and the spray liquid in the water tank is transported to the main pipe through the water pump, and the spray liquid flows to the water spray pipe from the branch pipe and is finally sprayed from the nozzle, and the spray liquid carries out the preliminary contact and washing with the waste gas, can effectively dissolve part water -soluble pollutant and reduce the waste gas temperature, and the waste gas after the pretreatment is discharged from the first connecting pipe at the top of processing box, and then enters the dry filter, and the extremely fine particulate matters and the water vapor that can remain in the waste gas are further filtered precisely here, and after this, the waste gas enters the activated carbon adsorption box through the second connecting pipe, and the activated carbon in it carries out the high -efficient adsorption to the volatile organic compound that remains in the waste gas, non -water -soluble, with its huge specific surface area and strong adsorption performance, realizes the depth purification of waste gas.

[0019] 2.The utility model discloses a handle waste gas through setting positioning ring, inclined plate, and when the waste gas after the pretreatment of spraying and filler absorption rises to the third box body, the waste gas will pass through multiple inclined plates in the positioning ring, and these inclined plates in annular array guide the airflow to produce cyclone, utilize the centrifugal force effect to separate the tiny liquid drops and residual particulate matters effectively carried in the airflow, thereby realize the demisting and drying of the airflow, ensure that the gas entering the subsequent processing unit is relatively clean and dry.

[0020] 3.The utility model discloses a handle waste liquid through setting filter box, and the waste liquid falls to the bottom of processing box under the action of gravity, and as the bottom of first box body is inclined downward and faces the filter pipe, the waste liquid can be collected and flow into the filter box smoothly, and after the purification treatment of filter box, the clean liquid is returned to the water tank through the recovery pipe, thereby realizing the recycling of spray liquid.

[0021] 4.The utility model discloses a handle waste gas through setting first box body, second box body, third box body, and the setting of processing box being divided into first box body, second box body, third box body facilitates the installation and dismounting of internal devices, and the convex and the groove ensure the sealing of the connection between the three, and the assembly only needs to insert the screw rod into the connecting lug, and then fix the screw rod on the upper and lower ends of the nut. DRAWINGS

[0022] Figure 1 It is the overall structure schematic diagram of a kind of printing machine waste gas treatment device proposed in the utility model;

[0023] Figure 2 It is the processing box internal structure schematic diagram of a kind of printing machine waste gas treatment device proposed in the utility model;

[0024] Figure 3 It is the branch pipe schematic diagram of a kind of printing machine waste gas treatment device proposed in the utility model;

[0025] Figure 4 A second box body schematic view of the printing machine waste gas treatment device is provided in the utility model.

[0026] Figure 5 A swash plate schematic view of the printing machine waste gas treatment device is provided in the utility model.

[0027] Figure 6 A third box body schematic view of the printing machine waste gas treatment device is provided in the utility model. Figure 1 A local enlarged schematic view of A in the utility model.

[0028] In the drawing: 1, treatment box; 2, suction pipe; 3, suction cover; 4, first connecting pipe; 5, dry filter; 6, second connecting pipe; 7, activated carbon adsorption box; 8, third connecting pipe; 9, air blower; 10, exhaust pipe; 11, water tank; 12, water pump; 13, main pipe; 14, branch pipe; 15, water spraying pipe; 16, nozzle; 17, filler absorption layer; 18, filter pipe; 19, filter box; 20, recovery pipe; 21, first box body; 22, second box body; 23, third box body; 24, positioning ring; 25, swash plate; 26, connecting lug; 27, screw rod; 28, nut; 29, protrusion; 30, recess; 31, conical cover. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0030] With reference to Figures 1-3 A printing machine waste gas treatment device, including treatment box 1, treatment box 1 bottom fixedly connected with suction pipe 2, suction pipe 2 one end fixedly installed with suction cover 3, treatment box 1 top fixedly installed with first connecting pipe 4, treatment box 1 is fixedly connected with dry filter 5 through first connecting pipe 4, dry filter 5 tail end fixedly installed with second connecting pipe 6, dry filter 5 is fixedly connected with activated carbon adsorption box 7 through second connecting pipe 6, activated carbon adsorption box 7 top fixedly installed with third connecting pipe 8, third connecting pipe 8 one end fixedly connected with air blower 9, air blower 9 gas outlet fixedly installed with exhaust pipe 10;

[0031] The processing box 1 is provided with a water tank 11, the water tank 11 is internally connected with a water pump 12 through a pipeline, the output end of the water pump 12 is fixedly connected with a main pipe 13, the main pipe 13 is connected with a branch pipe 14, one end of the branch pipe 14 penetrates the processing box 1 and extends to the inside, a plurality of water spraying pipes 15 are fixedly installed on the branch pipe 14, a plurality of nozzles 16 are fixedly installed below the water spraying pipes 15, and a filler absorption layer 17 is fixedly installed in the processing box 1.

[0032] The exhaust gas generated by the printing machine is first sucked into the processing box 1 through the suction pipe 2 under the power of the air blower 9, the exhaust gas flows from bottom to top, first passes through the filler absorption layer 17, and chemical reactions are generated, the exhaust gas that is not completely purified rises to the nozzle 16, the spraying liquid in the water tank 11 is transported to the main pipe 13 through the water pump 12, the spraying liquid flows from the branch pipe 14 to the water spraying pipe 15 and is finally sprayed out from the nozzle 16, the spraying liquid preliminarily contacts and washes the exhaust gas, can effectively dissolve part of the water-soluble pollutants and reduce the exhaust gas temperature, the exhaust gas after the pretreatment is discharged from the first connecting pipe 4 at the top of the processing box 1, then enters the dry filter 5, at this place, the extremely fine particulate matters and water vapor possibly remaining in the exhaust gas are further precisely filtered, thereafter, the exhaust gas enters the activated carbon adsorption box 7 through the second connecting pipe 6, the activated carbon in the activated carbon adsorption box 7 realizes high-efficiency adsorption of the non-water-soluble volatile organic compounds remaining in the exhaust gas by virtue of the huge specific surface area and strong adsorption performance, and deep purification of the exhaust gas is realized, finally, the clean gas completely meeting the emission standard is discharged into the atmosphere through the exhaust pipe 10 under the suction action of the air blower 9.

[0033] With reference to Figures 1-2 , specifically: the processing box 1 is fixedly installed with a filter pipe 18 at the bottom, one end of the filter pipe 18 is fixedly connected with a filter box 19, and a recovery pipe 20 is fixedly installed between the filter box 19 and the water tank 11.

[0034] The waste liquid generated in the pretreatment stage falls to the bottom of the processing box 1 under the action of gravity, the waste liquid is collected and smoothly flows into the filter box 19 due to the fact that the bottom of the first box body 21 is inclined downward and faces the filter pipe 18, and the clean liquid is returned to the water tank 11 through the recovery pipe 20 after the purification treatment of the filter box 19, so that the recycling of the spraying liquid is realized.

[0035] With reference to Figure 2 , specifically: the processing box 1 comprises a first box body 21, a second box body 22 and a third box body 23 from bottom to top, the number of the branch pipes 14 is at least two, and the filler absorption layer 17 is correspondingly arranged below each group of nozzles 16.

[0036] With reference to Figure 2 , specifically: the filler absorption layer 17 is composed of porous inert fillers.

[0037] With reference to Figure 5 Specifically, the third box body 23 is internally fixedly installed with a positioning ring 24, and the positioning ring 24 is internally fixedly installed with a plurality of inclined plates 25 arranged in a ring array;

[0038] When the waste gas pre-processed through spraying and filler absorption rises to the third box body 23, the waste gas will pass through the plurality of inclined plates 25 inside the positioning ring 24, and the inclined plates 25 arranged in a ring array guide the airflow to generate a cyclone, and the centrifugal force acting on the airflow effectively separates the tiny liquid droplets and residual particulate matters entrained in the airflow, thereby realizing the demisting and drying of the airflow and ensuring that the gas entering the subsequent processing unit is relatively clean and dry.

[0039] With reference to Figure 2 Specifically, the bottom of the first box body 21 is arranged to be inclined downward and toward the filter pipe 18.

[0040] With reference to Figure 1 、 Figure 6 Specifically, the first box body 21, the second box body 22, and the third box body 23 are all welded with connecting lugs 26, the connecting lugs 26 are provided with a screw rod 27 penetrating therebetween, and the screw rod 27 is threadedly connected with nuts 28 at both ends thereof.

[0041] With reference to Figure 4 Specifically, the second box body 22 is fixedly installed with protrusions 29 at both ends thereof, and the first box body 21 and the third box body 23 are both provided with grooves 30 matched with the protrusions 29;

[0042] The division of the processing box 1 into the first box body 21, the second box body 22, and the third box body 23 facilitates the installation and dismounting of the internal devices, and meanwhile, the protrusions 29 and the grooves 30 ensure the sealing connection among the three, and the assembly only needs to insert the screw rod 27 into the connecting lugs 26 and then fix the screw rod 27 at both ends thereof from the nuts 28.

[0043] With reference to Figure 1 Specifically, the exhaust pipe 10 is fixedly installed with a conical cover 31 at the top end thereof, which effectively prevents rainwater from flowing backward and assists the diffusion of the gas.

[0044] Working principle: the exhaust gas generated by the printing machine is first sucked into the treatment box 1 through the suction pipe 2 under the power of the air blower 9, and the exhaust gas flows from bottom to top, first passes through the filler absorption layer 17 and reacts chemically with it, the exhaust gas that is not completely purified rises to the nozzle 16, the water tank 11 is connected to the main pipe 13 through the water pump 12, the spray liquid in the water tank 11 is transported to the water spray pipe 15 through the branch pipe 14 and finally sprayed out from the nozzle 16, the spray liquid is preliminarily contacted and washed with the exhaust gas, can effectively dissolve part of the water-soluble pollutants and reduce the exhaust gas temperature, the exhaust gas after pretreatment is discharged from the first connecting pipe 4 at the top of the treatment box 1, and then enters the dry filter 5, where the extremely fine particles and water vapor that may be left in the exhaust gas are further precisely filtered, and then the exhaust gas enters the activated carbon adsorption box 7 through the second connecting pipe 6, and the activated carbon in the activated carbon adsorption box 7 has a large specific surface area and strong adsorption performance, and can effectively adsorb the residual non-water-soluble volatile organic compounds in the exhaust gas, so as to realize deep purification of the exhaust gas;

[0045] The waste liquid generated in the pretreatment stage falls to the bottom of the treatment box 1 under the action of gravity, and since the bottom of the first box body 21 is inclined downward and towards the filter pipe 18, the waste liquid can be collected and smoothly flow into the filter box 19, and after purification treatment in the filter box 19, the clean liquid is returned to the water tank 11 through the recovery pipe 20, realizing the recycling of the spray liquid;

[0046] When the exhaust gas after spray and filler absorption pretreatment rises to the third box body 23, the exhaust gas will pass through a plurality of inclined plates 25 inside the positioning ring 24, and these annular arrayed inclined plates 25 guide the airflow to generate a cyclone, and utilize the centrifugal force to effectively separate the tiny liquid droplets and residual particles carried in the airflow, so as to realize the demisting and drying of the airflow, and ensure that the gas entering the subsequent treatment unit is relatively clean and dry;

[0047] Finally, under the suction action of the air blower 9, the clean gas that fully meets the emission standard is discharged into the atmosphere through the exhaust pipe 10, and the conical cover 31 at the top end of the exhaust pipe 10 can effectively prevent rainwater from flowing back and assist gas diffusion;

[0048] The treatment box 1 is divided into the first box body 21, the second box body 22 and the third box body 23, which facilitates the installation and disassembly of the internal devices, and the convex 29 and the groove 30 ensure the sealing connection between the three, and the assembly only needs to insert the screw rod 27 into the connecting lug 26 and then fix the upper and lower ends of the screw rod 27 through the nut 28.

[0049] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

[0050] In the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

Claims

1. A printing press exhaust treatment device, characterized in that, The utility model provides a kind of air purification device, including processing box (1), the bottom of processing box (1) is fixedly connected with suction pipe (2), one end of suction pipe (2) is fixedly installed with suction hood (3), the top of processing box (1) is fixedly installed with first connecting pipe (4), processing box (1) is fixedly connected with dry filter (5) by first connecting pipe (4), the distal end of dry filter (5) is fixedly installed with second connecting pipe (6), dry filter (5) is fixedly connected with activated carbon adsorption box (7) by second connecting pipe (6), the top of activated carbon adsorption box (7) is fixedly installed with third connecting pipe (8), one end of third connecting pipe (8) is fixedly connected with air blower (9), the air outlet of air blower (9) is fixedly installed with exhaust pipe (10); The side of processing box (1) is provided with a water tank (11), the water tank (11) is connected with a water pump (12) by a pipeline inside, the output end of the water pump (12) is fixedly connected with a main pipe (13), the main pipe (13) is connected with a branch pipe (14), one end of the branch pipe (14) penetrates the processing box (1) and extends to the inside, a plurality of water spray pipes (15) are fixedly installed on the branch pipe (14), a plurality of nozzles (16) are fixedly installed below the water spray pipes (15), and a filler absorption layer (17) is fixedly installed inside the processing box (1).

2. A printing press exhaust treatment apparatus according to claim 1, wherein The bottom of the processing box (1) is fixedly installed with a filter pipe (18), one end of the filter pipe (18) is fixedly connected with a filter box (19), and a recovery pipe (20) is fixedly installed between the filter box (19) and the water tank (11).

3. A printing press exhaust treatment apparatus according to claim 2, wherein The processing box (1) comprises a first box body (21), a second box body (22) and a third box body (23) from bottom to top, the number of the branch pipes (14) is at least two, and the filler absorption layer (17) is correspondingly arranged below each group of nozzles (16).

4. A printing press exhaust treatment apparatus as in claim 1, wherein, The filler absorption layer (17) is composed of porous inert filler.

5. A printing press exhaust treatment apparatus as in claim 3, wherein, The third box body (23) is fixedly installed with a positioning ring (24) inside, and a plurality of inclined plates (25) in annular array are fixedly installed inside the positioning ring (24).

6. A printing press exhaust treatment apparatus as in claim 3, wherein, The bottom of the first box body (21) is arranged to be inclined downward and towards the filter pipe (18).

7. A printing press exhaust treatment apparatus as in claim 3, wherein, The first box body (21), the second box body (22) and the third box body (23) are all welded with connecting ears (26) outside, a screw rod (27) is arranged between the connecting ears (26), and nuts (28) are threadedly connected to the upper and lower ends of the screw rod (27).

8. A printing press exhaust treatment apparatus as in claim 3, wherein, The second box body (22) is fixedly installed with protrusions (29) at the upper and lower ends, and the first box body (21) and the third box body (23) are both provided with grooves (30) matched with the protrusions (29).

9. A printing press exhaust treatment apparatus as in claim 1, wherein, The top end of the exhaust pipe (10) is fixedly installed with a conical cover (31).

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