A printing plant VOCs activated carbon adsorption regeneration device

Abstract

The utility model discloses a kind of printing workshop VOCs activated carbon adsorption regeneration device, it is related to waste gas treatment technical field, including adsorption tower upper section and replacement component, the left side of adsorption tower upper section is connected with air inlet pipe above, and the outside lower portion of adsorption tower upper section is provided with regeneration box, the right side of regeneration box is installed with fan one, and the output end of fan one is connected with heating box, the inside of heating box is installed with electric heating wire.The printing workshop VOCs activated carbon adsorption regeneration device, by servo motor drives bidirectional screw rod to rotate, makes mounting block follow screw nut along bidirectional screw rod to move oppositely or in opposite directions, to drive shear fork rod one, shear fork rod two, shear fork rod three and shear fork rod four movement, make sliding block slide in moving frame, along with the sliding of sliding block, moving frame carries out lateral displacement, to move adsorption box one or adsorption box two on bearing frame out of regeneration box, it is convenient to regenerate operation or replacement to adsorbed saturated activated carbon.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically a VOCs activated carbon adsorption and regeneration device for printing workshops. Background Technology

[0002] In the printing industry, the printing process uses a large amount of raw materials containing volatile organic compounds (VOCs), such as inks and thinners. These VOCs evaporate into the air during printing and drying processes, causing environmental pollution and harming the health of workshop workers. Currently, activated carbon adsorption is one of the common methods for treating VOCs in printing workshops. Activated carbon removes VOCs from the waste gas through adsorption. However, to reduce the cost of using activated carbon, it needs to be regenerated.

[0003] Existing activated carbon regeneration devices have low regeneration efficiency, making it difficult to meet the treatment needs of large amounts of VOCs waste gas during continuous production in printing workshops.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed a VOCs activated carbon adsorption and regeneration device for printing workshops. Utility Model Content

[0005] The purpose of this invention is to provide a VOCs activated carbon adsorption and regeneration device for printing workshops to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a VOCs activated carbon adsorption and regeneration device for a printing workshop, comprising an upper section of an adsorption tower and a replacement component. An air inlet pipe is connected to the upper left side of the upper section of the adsorption tower, and a regeneration box is located below the exterior of the upper section of the adsorption tower. A blower is installed on the right side of the regeneration box, and the output end of the blower is connected to a heating box. An electric heating wire is installed inside the heating box, and an air blowing pipe is connected to the left side of the heating box. The replacement component is located on the rear right side of the regeneration box and includes a servo motor, a bidirectional lead screw, a lead screw nut, a mounting block, and four scissor rods (one, two, three, and four). The system comprises a sliding block, a moving frame, a support frame, a first adsorption box, and a second adsorption box. The output end of the servo motor is connected to a bidirectional lead screw, and a lead screw nut is connected to the outside of the bidirectional lead screw. A mounting block is provided outside the lead screw nut, and a scissor bar 1 is hinged to the middle of the mounting block. A scissor bar 3 is hinged to the other end of the first scissor bar, and a scissor bar 2 is hinged to the middle of the first scissor bar. A scissor bar 4 is hinged to one end of the second scissor bar, and a sliding block is hinged to the other end of the fourth scissor bar. A moving frame is slidably connected to the outside of the sliding block, and a support frame is provided on the left side of the moving frame. Adsorption boxes 1 and 2 are respectively fixed in the mounting groove on the surface of the support frame by bolts.

[0007] Furthermore, the lower section of the adsorption tower is fixed through the opening at the bottom of the regeneration box, and an outlet pipe is connected to the lower right side of the lower section of the adsorption tower.

[0008] Furthermore, the regeneration box is externally connected to an exhaust pipe, and a second fan is installed at the other end of the exhaust pipe.

[0009] Furthermore, a condenser is provided at the output end of the second fan, and a gas-liquid separator is provided at the output end of the condenser.

[0010] Furthermore, the liquid outlet of the gas-liquid separator is provided with a liquid storage tank, and valves are installed on the air inlet pipe, air outlet pipe, air blowing pipe and exhaust pipe.

[0011] Furthermore, the bidirectional lead screw and the moving frame are parallel to each other, and the sliding blocks are symmetrically distributed about the transverse central axis of the moving frame.

[0012] Furthermore, the number of lead screw nuts, mounting blocks, and sliding blocks is the same, and the distance between the upper section and the lower section of the adsorption tower is the same as the height of the moving frame.

[0013] Furthermore, scissor bar one and scissor bar four are parallel to each other, and scissor bar two and scissor bar three are parallel to each other.

[0014] This utility model provides a VOCs activated carbon adsorption and regeneration device for a printing workshop, which has the following beneficial effects:

[0015] 1. This utility model uses a servo motor to drive a bidirectional lead screw to rotate, causing the mounting block to follow the lead screw nut and move in opposite directions along the bidirectional lead screw. This, in turn, drives the scissor lift rods one, two, three, and four to move, causing the sliding block to slide within the moving frame. As the sliding block slides, the moving frame undergoes lateral displacement, thereby removing adsorption box one or adsorption box two from the regeneration box on the support frame. This facilitates the regeneration or replacement of saturated activated carbon. While adsorption box one is being removed for regeneration, adsorption box two continues to function, ensuring that the waste gas generated in the printing workshop is always promptly adsorbed and purified, maintaining a stable environmental treatment effect.

[0016] 2. This utility model starts by using a blower to deliver air to a heating box. The air is heated by an electric heating wire inside the heating box, creating high-temperature hot air. This hot air then enters the regeneration box through an air blowing pipe and a porous air distribution plate at the end, where it comes into full contact with the saturated activated carbon. This causes the VOCs adsorbed on the activated carbon to desorb upon heating. The desorbed VOCs mix with the hot air and are then extracted through an exhaust pipe and blower two into a condenser. The condenser cools the mixture, causing the VOCs to condense into a liquid state. The condensed gas-liquid mixture then enters a gas-liquid separator, which separates the liquid VOCs. The recovered liquid is centrally stored in a storage tank, facilitating safe and standardized subsequent disposal, reducing environmental pollution risks, and meeting environmental protection requirements. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a VOCs activated carbon adsorption and regeneration device for a printing workshop according to the present invention.

[0018] Figure 2 This is a top view cross-sectional structural diagram of the regeneration box of a VOCs activated carbon adsorption and regeneration device for a printing workshop according to this utility model.

[0019] Figure 3 This is a three-dimensional structural diagram of the support frame of a VOCs activated carbon adsorption and regeneration device for a printing workshop according to the present invention.

[0020] In the diagram: 1. Upper section of adsorption tower; 2. Inlet pipe; 3. Regeneration box; 4. Lower section of adsorption tower; 5. Outlet pipe; 6. Fan 1; 7. Heating box; 8. Heating wire; 9. Air blowing pipe; 10. Exhaust pipe; 11. Fan 2; 12. Condenser; 13. Gas-liquid separator; 14. Storage tank; 15. Valve; 16. Replacement component; 1601. Servo motor; 1602. Two-way lead screw; 1603. Lead screw nut; 1604. Mounting block; 1605. Scissor lift 1; 1606. Scissor lift 2; 1607. Scissor lift 3; 1608. Scissor lift 4; 1609. Sliding block; 1610. Moving frame; 1611. Support frame; 1612. Adsorption box 1; 1613. Adsorption box 2. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] like Figures 1 to 3As shown in the figure, a VOCs activated carbon adsorption and regeneration device for a printing workshop includes an upper section 1 of an adsorption tower and a replacement component 16. The replacement component 16 is arranged on the right rear end of a regeneration box 3, and the replacement component 16 includes a servo motor 1601, a bidirectional screw rod 1602, a screw rod nut 1603, a mounting block 1604, a first scissor rod 1605, a second scissor rod 1606, a third scissor rod 1607, a fourth scissor rod 1608, a sliding block 1609, a moving frame 1610, a carrier 1611, a first adsorption box 1612 and a second adsorption box 1613. The output end of the servo motor 1601 is connected to the bidirectional screw rod 1602, and the external of the bidirectional screw rod 1602 is connected with the screw rod nut 1603. The external of the screw rod nut 1603 is provided with the mounting block 1604, and the middle of the mounting block 1604 is hinged with the first scissor rod 1605. The other end of the first scissor rod 1605 is hinged with the third scissor rod 1607, and the middle of the first scissor rod 1605 is hinged with the second scissor rod 1606. One end of the second scissor rod 1606 is hinged with the fourth scissor rod 1608, and the other end of the fourth scissor rod 1608 is hinged with the sliding block 1609. The external of the sliding block 1609 is slidably connected with the moving frame 1610, and the left side of the moving frame 1610 is provided with the carrier 1611. The first adsorption box 1612 and the second adsorption box 1613 are respectively fixed in the mounting grooves on the surface of the carrier 1611 through bolts. The bidirectional screw rod 1602 and the moving frame 1610 are parallel to each other, and the sliding blocks 1609 are symmetrically distributed about the horizontal central axis of the moving frame 1610. The screw rod nut 1603, the mounting block 1604 and the sliding block 1609 are provided in the same number. The distance between the upper section 1 of the adsorption tower and the lower section 4 of the adsorption tower is the same as the height of the moving frame 1610. The first scissor rod 1605 and the fourth scissor rod 1608 are parallel to each other, and the second scissor rod 1606 and the third scissor rod 1607 are parallel to each other.

[0023] The specific operation is as follows. The servo motor 1601 drives the bidirectional screw rod 1602 to rotate, so that the mounting block 1604 moves towards or away from each other along the bidirectional screw rod 1602 following the screw rod nut 1603, thereby driving the first scissor rod 1605, the second scissor rod 1606, the third scissor rod 1607 and the fourth scissor rod 1608 to move, making the sliding block 1609 slide in the moving frame 1610. As the sliding block 1609 slides, the moving frame 1610 undergoes a lateral displacement, thereby moving the first adsorption box 1612 or the second adsorption box 1613 on the carrier 1611 out of the regeneration box 3, facilitating the regeneration operation or replacement of the activated carbon with saturated adsorption. During the process of the first adsorption box 1612 being removed for regeneration treatment, the second adsorption box 1613 continuously plays a role, ensuring that the waste gas generated in the printing workshop can always be adsorbed and purified in a timely manner, maintaining a stable environmental protection treatment effect.

[0024] As Figure 1As shown, an air inlet pipe 2 is connected to the upper left side of the upper section 1 of the adsorption tower, and a regeneration box 3 is installed at the lower outside of the upper section 1 of the adsorption tower. The lower section 4 of the adsorption tower is fixed through the opening at the bottom of the regeneration box 3, and an air outlet pipe 5 is connected to the lower right side of the lower section 4 of the adsorption tower. A blower 6 is installed on the right side of the regeneration box 3, and a heating box 7 is connected to the output end of the blower 6. An electric heating wire 8 is installed inside the heating box 7, and an air blowing pipe 9 is connected to the left side of the heating box 7. An exhaust pipe 10 is connected to the outside of the regeneration box 3, and a blower 11 is installed at the other end of the exhaust pipe 10. A condenser 12 is installed at the output end of the blower 11, and a gas-liquid separator 13 is installed at the output end of the condenser 12. A liquid storage tank 14 is installed at the liquid outlet end of the gas-liquid separator 13. Valves 15 are installed on the air inlet pipe 2, the air outlet pipe 5, the air blowing pipe 9, and the exhaust pipe 10.

[0025] The specific operation is as follows: Start the fan 6 to deliver air to the heating box 7. The heating box 7 is heated by the electric heating wire 8, forming high-temperature hot air. The high-temperature hot air enters the regeneration box 3 through the air blowing pipe 9 and the porous air distribution plate at the end, and comes into full contact with the adsorbed activated carbon. This causes the VOCs adsorbed on the activated carbon to desorb due to heat. The desorbed VOCs and hot air are mixed and then extracted through the exhaust pipe 10 and the fan 11 into the condenser 12. The condenser 12 cools the mixed gas, causing the VOCs to condense into a liquid state. The condensed gas-liquid mixture enters the gas-liquid separator 13, which separates the liquid VOCs. The recovered liquid is centrally stored in the storage tank 14, which facilitates safe and standardized subsequent disposal, reduces the risk of environmental pollution, and meets environmental protection requirements.

[0026] In summary, the VOCs activated carbon adsorption and regeneration device for the printing workshop is designed as follows: the upper section 1 of the adsorption tower, the regeneration box 3, and the lower section 4 of the adsorption tower are integrated into one unit. Silicone sealing rings are installed on the side of the upper section 1 and the lower section 4 near the moving frame 1610. The VOCs-containing waste gas generated in the printing workshop is controlled by valve 15 on the inlet pipe 2 and enters the regeneration box 3 from the upper left side of the upper section 1. At this time, the second adsorption box 1613 inside the support frame 1611 is in operation, and the activated carbon inside performs adsorption. The waste gas passes through the upper section 1, the regeneration box 3, and the lower section 4 of the adsorption tower sequentially from top to bottom. When passing through the second adsorption box 1613, the activated carbon effectively adsorbs the VOCs in the waste gas. The purified gas after adsorption treatment is discharged through the outlet pipe 5 on the lower right side of the lower section 4 of the adsorption tower.

[0027] When the activated carbon in adsorption box 1613 is saturated, close valves 15 on inlet pipe 2 and outlet pipe 5, start servo motor 1601, which drives bidirectional lead screw 1602 to rotate, causing mounting block 1604 to move in opposite directions along the outside of bidirectional lead screw 1602, following lead screw nut 1603. Scissor lift 1605, scissor lift 2, scissor lift 3, and scissor lift 4 move accordingly, causing sliding block 16... 09 slides within the moving frame 1610. As the sliding block 1609 slides, the moving frame 1610 moves horizontally to the left, thereby moving the second adsorption box 1613 on the support frame 1611 out from between the upper section 1 and the lower section 4 of the adsorption tower and into the regeneration box 3. This allows the first adsorption box 1612 containing activated carbon to be sent to the working position between the upper section 1 and the lower section 4 of the adsorption tower. The valves 15 on the inlet pipe 2 and the outlet pipe 5 are opened to continue the waste gas adsorption work.

[0028] Simultaneously, fan 6 is activated, sending air into heating box 7. The air is heated by the electric heating wire 8 inside heating box 7, forming high-temperature hot air. This hot air then enters regeneration box 3 through air blowing pipe 9 and the porous air distribution plate at the end, fully contacting the saturated activated carbon. This causes the VOCs adsorbed on the activated carbon to desorb upon heating. The desorbed VOCs mix with the hot air and are then extracted through exhaust pipe 10 and fan 11 into condenser 12. The condenser 12 cools the mixture, causing the VOCs to condense into a liquid state. The condensed gas-liquid mixture enters gas-liquid separator 13, which separates the liquid VOCs. The recovered liquid is centrally stored in storage tank 14 for subsequent processing. The separated gas can then be discharged or further treated. Through this alternating process, effective adsorption and treatment of VOCs in the printing workshop's exhaust gas, efficient regeneration of activated carbon, and convenient replacement are achieved, ensuring the continuous and stable operation of the device.

[0029] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A VOCs activated carbon adsorption and regeneration device for a printing workshop, comprising an upper section of an adsorption tower (1) and a replacement assembly (16), characterized in that, An air inlet pipe (2) is connected to the upper left side of the upper section (1) of the adsorption tower, and a regeneration box (3) is provided on the lower outside of the upper section (1) of the adsorption tower. A blower (6) is installed on the right side of the regeneration box (3), and a heating box (7) is connected to the output end of the blower (6). An electric heating wire (8) is installed inside the heating box (7), and an air blowing pipe (9) is connected to the left side of the heating box (7). The replacement component (16) is located on the right side of the rear end of the regeneration box (3), and the replacement component (16) is located on the right side of the rear end of the regeneration box (3). The replacement component (16) includes a servo motor (1601), a bidirectional lead screw (1602), a lead screw nut (1603), a mounting block (1604), scissor lift one (1605), scissor lift two (1606), scissor lift three (1607), scissor lift four (1608), a sliding block (1609), a moving frame (1610), a support frame (1611), a suction box one (1612), and a suction box two (1613). The servo motor (1601) The output end is connected to a bidirectional lead screw (1602), and a lead screw nut (1603) is connected to the outside of the bidirectional lead screw (1602). A mounting block (1604) is provided on the outside of the lead screw nut (1603), and a scissor bar one (1605) is hinged to the middle of the mounting block (1604). A scissor bar three (1607) is hinged to the other end of the scissor bar one (1605), and a scissor bar two (1606) is hinged to the middle of the scissor bar one (1605). One end of the scissor bar two (1606) is hinged to the scissor bar four (1608), and the other end of the scissor bar four (1608) is hinged to the sliding block (1609). The sliding block (1609) is slidably connected to the outside of the sliding frame (1610), and a support frame (1611) is provided on the left side of the moving frame (1610). The mounting groove on the surface of the support frame (1611) is fixed with the adsorption box one (1612) and the adsorption box two (1613) respectively by bolts.

2. The activated carbon adsorption and regeneration device for VOCs in a printing workshop according to claim 1, characterized in that, The bottom opening of the regeneration box (3) is through which the lower section (4) of the adsorption tower is fixed, and the lower right side of the lower section (4) of the adsorption tower is connected to the gas outlet pipe (5).

3. The activated carbon adsorption and regeneration device for VOCs in a printing workshop according to claim 1, characterized in that, The regeneration box (3) is externally connected to an exhaust pipe (10), and a second fan (11) is provided at the other end of the exhaust pipe (10).

4. The activated carbon adsorption and regeneration device for VOCs in a printing workshop according to claim 3, characterized in that, The output end of the second fan (11) is equipped with a condenser (12), and the output end of the condenser (12) is equipped with a gas-liquid separator (13).

5. The activated carbon adsorption and regeneration device for VOCs in a printing workshop according to claim 4, characterized in that, The liquid outlet of the gas-liquid separator (13) is provided with a liquid storage tank (14), and valves (15) are installed on the air inlet pipe (2), air outlet pipe (5), air blowing pipe (9) and exhaust pipe (10).

6. The activated carbon adsorption and regeneration device for VOCs in a printing workshop according to claim 1, characterized in that, The bidirectional lead screw (1602) and the moving frame (1610) are parallel to each other, and the sliding blocks (1609) are symmetrically distributed about the transverse central axis of the moving frame (1610).

7. The activated carbon adsorption and regeneration device for VOCs in a printing workshop according to claim 2, characterized in that, The number of screw nut (1603), mounting block (1604) and sliding block (1609) is the same, and the distance between the upper section (1) and lower section (4) of the adsorption tower is the same as the height of the moving frame (1610).

8. The activated carbon adsorption and regeneration device for VOCs in a printing workshop according to claim 1, characterized in that, The first scissor bar (1605) and the fourth scissor bar (1608) are parallel to each other, and the second scissor bar (1606) and the third scissor bar (1607) are parallel to each other.

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