Printing waste gas collecting device

Abstract

The utility model relates to the technical field of waste gas collection, and discloses a printing waste gas collection device which comprises a drying box used for containing a packaging material; an adsorption part for adsorbing waste gas is arranged in the waste gas collection box; the fresh air conveying pipe communicates with the drying box and the waste gas collecting box, and hot air flow used for heating and drying the printing ink on the packaging material is introduced into the fresh air conveying pipe; and the waste gas conveying pipe communicates with the drying box and the waste gas collecting box, and a closed gas circulation loop is formed by the waste gas conveying pipe and the fresh air conveying pipe and used for reusing airflow heat. The printing ink drying device has the effect of conveniently collecting waste gas generated by printing ink drying.

Description

Technical Field

[0001] This application relates to the technical field of waste gas collection, and in particular to a printing waste gas collection device. Background Art

[0002] Packaging bags are convenient containers for encapsulating various commodities. They are made of a variety of materials such as plastics, papers, fabrics, and metal foils. During the production process of these materials, brand logos, product information, and decorative patterns are usually printed on their surfaces to enhance the recognition and attractiveness of the commodities.

[0003] During the printing process, ink is applied to the surface of the packaging bag material. To accelerate the drying speed of the ink, a drying oven is usually used to heat-treat the ink on the material surface.

[0004] However, a large amount of waste gas is generated during the drying process of the ink due to the volatilization of organic solvents. These waste gases not only pollute the environment but also pose a threat to the health of operators. Utility Model Content

[0005] To facilitate the collection of waste gas generated by drying ink, this application provides a printing waste gas collection device.

[0006] A printing waste gas collection device provided by this application adopts the following technical solutions:

[0007] A printing waste gas collection device includes:

[0008] A drying oven for placing packaging materials;

[0009] A waste gas collection box with adsorbents inside for adsorbing waste gas;

[0010] A fresh air delivery pipe connecting the drying oven and the waste gas collection box, and a hot air flow for heating and drying the ink on the packaging material is introduced into the fresh air delivery pipe;

[0011] A waste gas delivery pipe connecting the drying oven and the waste gas collection box, and the waste gas delivery pipe and the fresh air delivery pipe form a closed gas circulation loop for recycling the heat of the air flow.

[0012] Optionally, the waste gas collection box includes:

[0013] A box body with an opening on the side wall for inserting the adsorbent;

[0014] A multi-functional cover plate for sealing and covering the opening to prevent waste gas leakage when the adsorbent is working; and for providing support to the adsorbent when moving the adsorbent to facilitate the insertion and removal of the adsorbent.

[0015] A support frame, the multifunctional cover plate is rotationally engaged with the support frame, and the support frame is slidably engaged with the box body along the axial direction of the opening, so as to facilitate the rotation of the multifunctional cover plate and the loading and unloading of the adsorbent.

[0016] Optionally, a flow guiding member is installed between the adsorbent and the outlet end of the waste gas delivery pipe, for expanding the contact range between the adsorbent and the waste gas.

[0017] Optionally, the flow guiding member includes:

[0018] A first flow guiding block, installed inside the waste gas collection box near the adsorbent;

[0019] A second flow guiding block, installed on the first flow guiding block, a plurality of flow guiding holes penetrating the first flow guiding block are formed on the second flow guiding block, and the second flow guiding block is inserted and engaged with the outlet end of the waste gas delivery pipe, so as to facilitate the waste gas to enter the inside of the flow guiding holes.

[0020] Optionally, a plurality of adsorbents are arranged along the direction from the outlet end of the waste gas delivery pipe to the fresh air delivery pipe, and a space for the waste gas to diffuse and flow is left between adjacent two adsorbents.

[0021] Optionally, a blocking member is provided on the inner wall of the drying box, the blocking member is located between the outlet end of the fresh air delivery pipe and the inlet end of the waste gas delivery pipe, and the blocking member divides the inner area of the drying box into a hot air flow gathering area, a normal drying area and a waste gas gathering area along the gas flow direction.

[0022] Optionally, the blocking member is arranged in a wavy shape, for guiding the air flow to the packaging material.

[0023] Optionally, a handle for facilitating the movement of the staff is provided on the support frame.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The hot air flow is transported into the drying box through the fresh air delivery pipe, and the ink is quickly dried by using its temperature difference and gas flow characteristics. During the drying process, the hot air flow carries the waste gas generated by drying the ink and flows into the waste gas collection box. The waste gas collection box is responsible for adsorbing and collecting the waste gas in the hot air flow. After that, the hot air flow flows into the fresh air delivery pipe again and is mixed with the fresh air in the fresh air delivery pipe, realizing the reuse of heat, thereby saving energy consumption;

[0026] 2. Inside the drying box, during the flow of the hot air flow, the contact time and contact area between the hot air flow and the packaging material are increased through the action of the blocking member, which further improves the drying effect on the ink on the packaging material;

[0027] 3. When the waste gas enters the interior of the box body, the diversion holes on the first diversion block and the second diversion block disperse the waste gas, thereby increasing the contact area between the waste gas and the adsorption member, and improving the utilization rate of the adsorption member. At the same time, there is a gap between adjacent adsorption members for the diffusion of waste gas, which further improves the efficiency of the adsorption member;

[0028] 4. When the adsorption member is working, the staff can push the handle on the support frame to drive the support frame to drive the multifunctional cover plate to move towards the box body. The multifunctional cover plate then flips, fits against the side wall of the box body, and is hermetically connected to the box body, effectively preventing the waste gas from leaking from the opening.

[0029] When it is necessary to load and unload the limiting member, the staff can pull the handle on the support frame to drive the support frame to drive the multifunctional cover plate to move away from the box body. Then rotate the multifunctional cover plate so that its bottom abuts against the top of the support frame, and the support frame provides support for the multifunctional cover plate. During the loading and unloading process, the limiting member is placed on the multifunctional cover plate for transition, which facilitates the handling of the limiting member, thereby improving the convenience of loading and unloading the limiting member. Description of the Drawings

[0030] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0031] Figure 2 is the schematic diagram showing the relative positions of the blocking member and the drying box in the embodiment of the present application.

[0032] Figure 3 is the schematic diagram showing the multifunctional cover plate sealing the opening of the box body in the embodiment of the present application.

[0033] Figure 4 is the schematic diagram showing the state of the multifunctional cover plate when loading and unloading the limiting member in the embodiment of the present application.

[0034] Figure 5 is the schematic diagram showing the structure of the diversion member in the embodiment of the present application.

[0035] Description of the Reference Numerals:

[0036] 1, drying box; 2, waste gas collection box; 21, box body; 211, opening; 22, multifunctional cover plate; 23, support frame; 231, handle; 3, fresh air delivery pipe; 4, waste gas delivery pipe; 5, diversion member; 51, first diversion block; 52, second diversion block; 53, diversion hole; 6, blocking member; 61, hot air aggregation area; 62, normal drying area; 63, waste gas aggregation area; 7, adsorption member. Detailed Embodiment

[0037] The following will further describe the present application in detail in combination with the attached Figures 1 - 5 drawings.

[0038] An embodiment of the present application discloses a printing waste gas collection device.

[0039] A printing waste gas collection device includes a drying box 1, a waste gas collection box 2, a fresh air delivery pipe 3, and a waste gas delivery pipe 4. The fresh air delivery pipe 3 connects the drying box 1 and the waste gas collection box 2, and a hot air flow for heating and drying the ink on the packaging material is introduced into the fresh air delivery pipe 3. The waste gas delivery pipe 4 connects the drying box 1 and the waste gas collection box 2, and the waste gas delivery pipe 4 and the fresh air delivery pipe 3 form a closed gas circulation loop for recycling the heat of the air flow.

[0040] The hot air flow is delivered to the inside of the drying box 1 through the fresh air delivery pipe 3, and the ink is quickly dried by using the temperature difference and gas flow of the hot air flow. The hot air flow carries the waste gas generated by drying the ink and flows into the waste gas collection box 2. The waste gas in the hot air flow is adsorbed and collected by the waste gas collection box 2. Then, the hot air flow flows back into the fresh air delivery pipe 3 again to be mixed with the fresh air in the fresh air delivery pipe 3 for reuse, saving energy consumption.

[0041] A number of support rods are provided inside the drying box 1 along the direction from the feeding end to the discharging end of the drying box 1 for placing the packaging material. The packaging material enters the inside of the drying box 1 from the feeding end of the drying box 1 and exits the drying box 1 from the discharging end of the drying box 1. During the movement of the packaging material, the packaging material is supported by the number of support rods to improve the placement stability of the packaging material.

[0042] A blocking member 6 is also fixedly installed at the top position of the inner wall of the drying box 1. The blocking member 6 divides the top area of the drying box 1 into a hot air flow gathering area 61, a normal drying area 62, and a waste gas gathering area 63. The hot air flow gathering area 61 is located near the feeding end of the drying box 1, and the waste gas gathering area is located near the discharging end of the drying box 1.

[0043] After the hot air flow inside the fresh air delivery pipe 3 flows into the inside of the drying box 1, the hot air flow gathers inside the hot air flow gathering area 61. The gathered hot air flow wraps the packaging material that has just entered the inside of the drying box 1, thereby increasing the contact area and contact time between the ink and the hot air flow, and thus improving the effect of heating and drying the ink.

[0044] The limiting member installed at the top position of the inner wall of the drying box 1 further reduces the cross-sectional range of the gas flow, reduces the distance between the maximum flow height of the hot air flow and the packaging material, thereby facilitating the contact between the hot air flow and the ink on the packaging material and improving the drying and heating effect.

[0045] In an embodiment of the present application, one side of the limiting member close to the packaging material is arranged in a wavy shape along the direction from the feeding end to the discharging end of the drying box 1. During the flow of the hot air current, the wavy limiting member deflects the hot air current onto the packaging material, thereby further improving the heating and drying effect of the ink on the packaging material.

[0046] The exhaust gas gathering area 63 gathers the exhaust gas, thereby facilitating the rapid extraction of the exhaust gas to the exhaust gas collection box 2.

[0047] The exhaust gas collection box 2 includes a box body 21, a multi-functional cover plate 22, and a support frame 23.

[0048] A number of openings 211 are provided on the side wall of the box body 21 along the direction from the air outlet end of the exhaust gas delivery pipe 4 to the fresh air delivery pipe 3. A number of adsorption members 7 corresponding to the openings 211 are installed inside the box body 21. The adsorption members 7 are inserted into the inner wall of the box body 21 through the opposite openings 211, thereby improving the convenience of loading and unloading the adsorption members 7.

[0049] A gap for facilitating gas diffusion is left between two adjacent adsorption members 7. When the air current flows along the direction from the air outlet end of the exhaust gas delivery pipe 4 to the fresh air delivery pipe 3, the contact area between the adsorption members 7 and the air current is enlarged, thereby improving the utilization rate of the adsorption members 7.

[0050] In an embodiment of the present application, the adsorption member 7 includes an adsorption box and activated carbon. A number of air vents for gas flow are provided on the adsorption box, and the activated carbon is placed inside the adsorption box to adsorb the organic solvents in the exhaust gas in the air current flowing through the adsorption box.

[0051] A flow guiding member 5 for expanding the contact range between the adsorption member 7 and the exhaust gas is further installed between the adsorption member 7 and the air outlet end of the exhaust gas delivery pipe 4.

[0052] The flow guiding member 5 includes a first flow guiding block 51 and a second flow guiding block 52. The first flow guiding block 51 is fixedly installed inside the exhaust gas collection box 2 close to the adsorption member 7. The second flow guiding block 52 and the first flow guiding block 51 are integrally formed. A number of flow guiding holes 53 penetrating the first flow guiding block 51 are provided on the second flow guiding block 52, and the second flow guiding block 52 is inserted and matched with the air outlet end of the exhaust gas delivery pipe 4 so that the exhaust gas enters the interior of the flow guiding holes 53, and the exhaust gas is dispersed through the number of flow guiding holes 53, thereby facilitating the improvement of the utilization rate of the adsorption member 7.

[0053] The multi-functional cover plate 22 is used to hermetically cover the openings 211 when the adsorption member 7 is working to prevent the leakage of the exhaust gas; when the adsorption member 7 is moved, it is used to provide support for the adsorption member 7 to facilitate the insertion and removal of the adsorption member 7.

[0054] The support frame 23 is located at the bottom of the box body 21, and the support frame 23 is slidably engaged with the box body 21 along the axis direction of the opening 211. In order to facilitate the staff to move the support frame 23, a handle 231 is also installed on the support frame 23.

[0055] The multi-functional cover plate 22 is rotationally engaged with the support frame 23. When it is necessary to cover the opening 211, the support frame 23 is pushed through the handle 231, so that the support frame 23 drives the multi-functional cover plate 22 to move towards the box body 21, causing the multi-functional cover plate 22 to flip, making the multi-functional cover plate 22 fit against the side wall of the box body 21, and making the multi-functional cover plate 22 be hermetically connected to the box body 21, thereby reducing the possibility of waste gas leakage from the opening 211.

[0056] When it is necessary to load and unload the limiting member, the staff pulls the support frame 23 through the handle 231, so that the support frame 23 drives the multi-functional cover plate 22 to move away from the box body 21, and rotates the multi-functional cover plate 22 so that the bottom of the multi-functional cover plate 22 abuts against the top of the support frame 23, and the support frame 23 supports the multi-functional cover plate 22.

[0057] The limiting member is placed on the multi-functional cover plate 22 during the loading and unloading process for transition, so as to facilitate the handling of the limiting member and improve the convenience of loading and unloading the limiting member.

[0058] The implementation principle of the printing waste gas collection device in the embodiment of the present application is as follows: The hot air flow is transported to the inside of the drying box 1 through the fresh air delivery pipe 3, and the ink is quickly dried by using its temperature difference and gas flow characteristics. During the drying process, the hot air flow carries the waste gas generated by drying the ink and flows into the waste gas collection box 2. The waste gas collection box 2 is responsible for adsorbing and collecting the waste gas in the hot air flow. After that, the hot air flow flows into the fresh air delivery pipe 3 again and is mixed with the fresh air in the fresh air delivery pipe 3 to realize the repeated utilization of heat, thereby saving energy consumption.

[0059] Inside the drying box 1, during the flow of the hot air flow, the contact time and contact area between the hot air flow and the packaging material are increased through the action of the blocking member 6, which further improves the drying effect of the ink on the packaging material.

[0060] When the waste gas enters the inside of the box body 21, the diversion holes 53 on the first diversion block 51 and the second diversion block 52 disperse the waste gas, thereby increasing the contact area between the waste gas and the adsorbent 7 and improving the utilization rate of the adsorbent 7. At the same time, there are gaps between adjacent adsorbents 7 for the diffusion of waste gas, which further enhances the efficiency of the adsorbent 7.

[0061] When the adsorbing member 7 is working, the staff can push the handle 231 on the support frame 23 to make the support frame 23 drive the multifunctional cover plate 22 to move toward the box body 21. The multifunctional cover plate 22 then flips over, fits against the side wall of the box body 21, and is hermetically connected to the box body 21, effectively preventing waste gas from leaking from the opening 211.

[0062] When it is necessary to load and unload the limiting member, the staff can pull the handle 231 on the support frame 23 to make the support frame 23 drive the multifunctional cover plate 22 to move away from the box body 21. Then rotate the multifunctional cover plate 22 so that its bottom abuts against the top of the support frame 23, and the support frame 23 provides support for the multifunctional cover plate 22. During the loading and unloading process, the limiting member is placed on the multifunctional cover plate 22 for transition, which facilitates the handling of the limiting member and thus improves the convenience of loading and unloading the limiting member.

[0063] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A printing waste gas collection device, characterized in that: Comprising: A drying oven (1) for placing packaging materials; An exhaust gas collection box (2) with an adsorbent (7) for adsorbing exhaust gas inside; A fresh air delivery pipe (3) connecting the drying oven (1) and the exhaust gas collection box (2), and a hot air stream for heating and drying the ink on the packaging materials is introduced into the fresh air delivery pipe (3); An exhaust gas delivery pipe (4) connecting the drying oven (1) and the exhaust gas collection box (2), and the exhaust gas delivery pipe (4) and the fresh air delivery pipe (3) form a closed gas circulation loop for recycling the heat of the air flow.

2. The printing exhaust gas collection device according to claim 1, characterized in that: The exhaust gas collection box (2) includes: A box body (21) with an opening (211) on the side wall for inserting the adsorbent (7); A multi-functional cover plate (22) for sealing and covering the opening (211) to prevent exhaust gas leakage when the adsorbent (7) is working; when moving the adsorbent (7), it provides support for the adsorbent (7) to facilitate the insertion and removal of the adsorbent (7); A support frame (23), the multi-functional cover plate (22) is rotationally matched with the support frame (23), and the support frame (23) is slidably matched with the box body (21) along the axis direction of the opening (211) to facilitate the rotation of the multi-functional cover plate (22) and the loading and unloading of the adsorbent (7).

3. The printing exhaust gas collection device according to claim 1, characterized in that: A flow guiding member (5) is installed between the adsorbent (7) and the outlet end of the exhaust gas delivery pipe (4) to expand the contact range between the adsorbent (7) and the exhaust gas.

4. The printing exhaust gas collection device according to claim 3, characterized in that: The flow guiding member (5) includes: A first flow guiding block (51) installed inside the exhaust gas collection box (2) near the adsorbent (7); A second flow guiding block (52) installed on the first flow guiding block (51), and a number of flow guiding holes (53) penetrating the first flow guiding block (51) are provided on the second flow guiding block (52), and the second flow guiding block (52) is inserted and matched with the outlet end of the exhaust gas delivery pipe (4) to facilitate the exhaust gas to enter the inside of the flow guiding holes (53).

5. The printing exhaust gas collection device according to claim 1, characterized in that: A number of the adsorbents (7) are arranged along the direction from the outlet end of the exhaust gas delivery pipe (4) to the fresh air delivery pipe (3), and a space for the exhaust gas to diffuse and flow is left between adjacent two adsorbents (7).

6. The printing exhaust gas collection device according to claim 1, characterized in that: A blocking member (6) is provided on the inner wall of the drying oven (1), the blocking member (6) is located between the outlet end of the fresh air delivery pipe (3) and the inlet end of the exhaust gas delivery pipe (4), and the blocking member (6) divides the inner area of the drying oven (1) into a hot air stream gathering area (61), a normal drying area (62) and an exhaust gas gathering area (63) along the gas flow direction.

7. A printing waste gas collection device according to claim 6, characterized in that: The blocking member (6) is arranged in a wavy shape for guiding the air flow to the packaging material.

8. A printing waste gas collection device according to claim 2, characterized in that: A handle (231) facilitating the movement of the staff is provided on the support frame (23).

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