Packaging bag printing equipment and waste gas treatment device thereof

Abstract

The utility model discloses packaging bag printing equipment and a waste gas treatment device thereof. The waste gas treatment device comprises a printing equipment gas inlet, a gas collecting pipeline, a mounting platform, an activated carbon purification gallery, a catalytic oxidation box, a centrifugal fan and an exhaust chimney. Waste gas generated by the printing equipment can be sucked in by the negative pressure suction fan in the air inlet of the printing equipment and enters the activated carbon purification gallery which obliquely extends upwards through the air collecting pipeline, the flow speed of the waste gas is controlled, an inclination angle is formed between the flow direction and the activated carbon filter screen, the waste gas can be fully adsorbed by activated carbon, and the extremely high purification rate is achieved; then the waste gas is sequentially decomposed by the ultraviolet light catalytic decomposition chamber and the oxidative decomposition chamber, organic matters in the waste gas can be decomposed into harmless substances through catalytic oxidation, and finally the treated gas is pumped out by the centrifugal fan and is upwards discharged through the exhaust chimney. Therefore, the printing waste gas can be prevented from causing major threats to the environment and the body health of workshop operators, and the safety of the environment and the operators is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to packaging bag printing equipment and a waste gas treatment device thereof. Background Art

[0002] The printing of packaging bags is a process flow of finished packaging bags. Packaging bag printing equipment is the instrument to realize this process flow. During the printing process of packaging bag printing equipment, some waste gas will be volatilized during the spraying process of organic solvents such as ink. The printing waste gas of these packaging bags contains a large amount of ethanol, butyl acetate, ethyl acetate, propyl acetate, xylene, toluene and other organic gases. This type of organic gas not only has a pungent smell, but is also often a harmful substance. If it is directly allowed to be discharged and retained in the workshop, it will pose a serious threat to the environment and the health of workshop workers, and will cause pollution.

[0003] With the rapid development of the packaging and printing industry, waste gas emissions have become an increasingly concerning environmental issue, and it is necessary to propose a waste gas treatment solution with high treatment efficiency. Utility Model Content

[0004] In view of this, an object of the present invention is to provide a packaging bag with gloves to solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] The utility model firstly provides an exhaust gas treatment device for packaging bag printing equipment, which comprises an air inlet of the printing equipment, an air collecting pipeline, a mounting platform, an activated carbon purification gallery, a catalytic oxidation box, a centrifugal fan and an exhaust chimney.

[0007] Among them, the air inlet of the printing equipment is fixed correspondingly to one side of the printing equipment, and a negative pressure exhaust fan is provided for drawing in the exhaust gas generated by the printing equipment; the air collecting pipeline is connected to the air inlet of the printing equipment; the mounting platform is erected above the air inlet of the printing equipment, and the air collecting pipeline passes through the bottom of the mounting platform to the mounting platform; the activated carbon purification corridor is installed on the mounting platform, and the bottom end is connected to the air collecting pipeline, the activated carbon purification corridor extends upwardly and a plurality of activated carbon filters are arranged inside the activated carbon purification corridor; the catalytic oxidation box is installed on the mounting platform, and the front part of the catalytic oxidation box is connected to the top of the activated carbon purification corridor, and the catalytic oxidation box is provided with an ultraviolet catalytic decomposition chamber and an oxidation decomposition chamber in sequence; the centrifugal fan is connected to the tail of the catalytic oxidation box, and is used to extract the treated gas in the catalytic oxidation box; the exhaust chimney is connected to the centrifugal fan, extends upward, and discharges the gas extracted by the centrifugal fan upward.

[0008] Preferably, an adsorbent collection hopper detachable from the activated carbon purification gallery is provided at the bottom end of the activated carbon purification gallery.

[0009] Preferably, an openable and closable maintenance panel is provided at the bottom of the activated carbon purification gallery.

[0010] Preferably, the catalytic oxidation box is provided with an openable and closable maintenance door.

[0011] Preferably, a staircase is provided on one side of the installation platform.

[0012] Preferably, the cross-section of the activated carbon purification gallery gradually expands from the bottom to the top, and the window area connecting the catalytic oxidation box and the activated carbon purification gallery is larger than the interface area between the gas collecting pipeline and the activated carbon purification gallery.

[0013] Preferably, the catalytic oxidation box is further provided with a biological decomposition chamber, in which a bacterial biofilm for decomposing organic pollutants in the waste gas is arranged.

[0014] The utility model also provides a packaging bag printing device, which includes the exhaust gas treatment device as described above, wherein the printing device includes multiple machine platforms, and the machine platforms of the multiple printing devices are arranged side by side, and are respectively equipped with printing device air inlets and negative pressure exhaust winds, and the air collecting pipelines are respectively connected to the air inlets of each printing device.

[0015] The technical effects achieved by the technical solution of the utility model mainly include:

[0016] A packaging bag printing waste gas treatment device is built, which includes a printing equipment air inlet, a gas collecting pipeline, an installation platform, an activated carbon purification corridor, a catalytic oxidation box, a centrifugal fan and an exhaust chimney. The activated carbon itself has a high-strength adsorption capacity. Multiple activated carbon filters in the activated carbon purification corridor can simultaneously treat a variety of mixed organic waste gases, which is especially suitable for low-concentration and large-volume waste gases, achieving a very high purification rate; the printing waste gas enters the catalytic oxidation box, and passes through the ultraviolet catalytic decomposition chamber and the oxidation decomposition chamber in turn, which can decompose the organic matter in the waste gas into harmless substances through catalytic oxidation, and has the advantages of high efficiency and low energy consumption, especially for volatile organic compounds, phenols, aldehydes and other harmful substances in the printing waste gas. The treated gas is finally extracted by a centrifugal fan and discharged upward through the exhaust chimney, which can avoid the printing waste gas from posing a major threat to the environment and the health of workshop workers, and effectively ensure the safety of the environment and workers.

[0017] Among them, the activated carbon purification corridor extends upward at an angle, the flow rate of the printing waste gas can be controlled to a certain extent, and a certain inclination angle is formed between the flow direction of the printing waste gas and the activated carbon filter, so that the printing waste gas can be more fully adsorbed by the activated carbon.

[0018] The overall structure is built to suit the structure of large packaging bag printing equipment and is easy to use and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the packaging bag printing equipment and the waste gas treatment device provided by the utility model;

[0020] Figure 2 The schematic diagram is a layout diagram of the air inlet and air collecting pipeline of the printing equipment of the packaging bag printing equipment.

[0021] The reference numerals in the above drawings are:

[0022] Printing equipment air inlet 1, gas collecting pipeline 2, installation platform 3, stairs 31, activated carbon purification corridor 4, adsorbent collection hopper 41, catalytic oxidation box 5, ultraviolet catalytic decomposition chamber 51, oxidation decomposition chamber 52, maintenance door 53, centrifugal fan 6, exhaust chimney 7, machine platform 8. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the utility model shown in the accompanying drawings and described according to the accompanying drawings are merely exemplary, and the utility model is not limited to these embodiments.

[0024] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not very relevant are omitted.

[0025] Combination Figure 1 and Figure 2 As shown, for the printing process, since the exhaust gas has the characteristics of large air volume, low concentration, complex composition and no recycling value, based on these characteristics, the embodiment of the utility model first provides an exhaust gas treatment device for packaging bag printing equipment, which includes a printing equipment air inlet 1, an air collecting pipeline 2, an installation platform 3, an activated carbon purification corridor 4, a catalytic oxidation box 5, a centrifugal fan 6 and an exhaust chimney 7.

[0026] The air inlet 1 of the printing equipment is fixed to one side of the printing equipment, and a negative pressure exhaust fan is provided to draw in the waste gas generated by the printing equipment;

[0027] The gas collecting pipeline 2 is connected to the air inlet 1 of the printing equipment;

[0028] The installation platform 3 is erected above the air inlet 1 of the printing equipment, and the air collecting pipeline 2 passes through the bottom of the installation platform 3 to the installation platform 3;

[0029] The activated carbon purification gallery 4 is installed on the installation platform 3, and the bottom end is connected to the gas collecting pipeline 2. The activated carbon purification gallery 4 extends upwardly and is provided with a plurality of activated carbon filters.

[0030] The catalytic oxidation box 5 is installed on the installation platform 3, the front part of the catalytic oxidation box 5 is connected to the top of the activated carbon purification gallery 4, and the catalytic oxidation box 5 is sequentially provided with an ultraviolet catalytic decomposition chamber 51 and an oxidation decomposition chamber 52;

[0031] The centrifugal fan 6 is connected to the rear of the catalytic oxidation box 5 and is used to extract the treated gas in the catalytic oxidation box 5;

[0032] The exhaust chimney 7 is connected to the centrifugal fan 6 and extends upward to discharge the gas extracted by the centrifugal fan 6 upward.

[0033] The operating principle of the waste gas treatment device of the above packaging bag printing equipment is as follows:

[0034] The exhaust gas generated by the printing equipment during printing operation will be sucked in by the negative pressure exhaust fan in the air inlet 1 of the printing equipment arranged on one side thereof, and the sucked-in printing exhaust gas passes through the gas collecting pipeline 2, and is transferred from the pipeline part located below the installation platform 3 to the pipeline part above the installation platform 3. At this point, the printing exhaust gas first enters the activated carbon purification corridor 4, and passes through multiple activated carbon filters. The activated carbon itself has a high-strength adsorption capacity and can simultaneously treat a variety of mixed organic waste gases, and is particularly suitable for low-concentration and high-volume exhaust gases, achieving an extremely high purification rate. It has the advantages of simple construction, low investment, and easy operation. The printing exhaust gas is thereby purified by the activated carbon therein; and the above-mentioned activated carbon purification corridor 4 extends upward at an angle, the flow velocity of the printing exhaust gas is controlled, and a certain inclination angle is formed between the flow direction of the printing exhaust gas and the activated carbon filter, and the printing The waste gas is brushed so that the activated carbon can be more fully adsorbed; thereafter, the printing waste gas enters the catalytic oxidation box 5, and is decomposed in turn by the ultraviolet catalytic decomposition chamber 51 and the oxidation decomposition chamber 52. Catalytic oxidation is a technology that decomposes organic matter in the waste gas into harmless substances through catalytic oxidation. This technology has the advantages of high efficiency and low energy consumption, especially for volatile organic compounds, phenols, aldehydes and other harmful substances in printing waste gas. It has a good treatment effect and is very suitable for application in printing equipment; at this point, the printing waste gas can be fully and effectively treated, and the treated gas in the catalytic oxidation box 5 is extracted through the centrifugal fan 6, and finally the gas extracted by the centrifugal fan 6 is discharged upward through the exhaust chimney 7, which can avoid the printing waste gas from posing a major threat to the environment and the health of workshop workers, and effectively protect the safety of the environment and workers.

[0035] Furthermore, in this embodiment, the bottom end of the activated carbon purification corridor 4 is provided with an adsorbent collection hopper 41 that can be removed from the activated carbon purification corridor 4. As the operation time increases, the residual substances adsorbed by the activated carbon filter will gradually increase. Therefore, by providing an adsorbent collection hopper 41 that can be removed from the activated carbon purification corridor 4 at the bottom end of the activated carbon purification corridor 4, the adsorbent will automatically fall into the adsorbent collection hopper 41, and the operator can regularly pull out the adsorbent collection hopper 41 for cleaning and maintenance, thereby ensuring the efficient operation of the activated carbon purification corridor 4.

[0036] In order to facilitate direct cleaning or disassembly of the activated carbon filter for replacement, an openable and closable maintenance panel is provided at the bottom of the activated carbon purification gallery 4.

[0037] Similarly, the catalytic oxidation box 5 is provided with an openable and closable maintenance door 53, so that the operator can open the maintenance door 53 to maintain the indoor components.

[0038] Since the exhaust chimney 7 is connected to the centrifugal fan 6 and extends upward, the gas extracted by the centrifugal fan 6 is discharged upward, which can further reduce the impact of printing exhaust gas on the surrounding environment and operators. Therefore, it is more convenient to set up the above-mentioned installation platform 3 for erecting the activated carbon purification corridor 4, catalytic oxidation box 5, centrifugal fan 6 and exhaust chimney 7. For installation and subsequent maintenance, a staircase 31 is provided on one side of the installation platform 3.

[0039] In order to further increase the contact area between the printing exhaust gas and the treatment structure and control the flow rate at the treatment structure, the cross-section of the activated carbon purification corridor 4 gradually expands from the bottom to the top, and the window area of ​​the catalytic oxidation box 5 connecting with the activated carbon purification corridor 4 is larger than the interface area between the gas collecting pipeline 2 and the activated carbon purification corridor 4.

[0040] For example, in this embodiment, the catalytic oxidation box 5 is further provided with a biological decomposition chamber, in which a bacterial biofilm for decomposing organic pollutants in the waste gas is arranged. Biological treatment technology is a technology that uses microorganisms to degrade harmful substances into harmless substances. The bacterial biofilm can use pollutants in the waste gas as nutrients for growth and reproduction; it decomposes harmful and odorous substances in the printing waste gas into simple inorganic substances that are non-toxic and harmless, and has the advantages of good treatment effect and low operating costs.

[0041] An embodiment of the utility model also provides a packaging bag printing device, which includes the exhaust gas treatment device as described above, wherein the printing device includes a plurality of machine platforms 8, and the machine platforms 8 of the plurality of printing devices are arranged side by side, and are respectively provided with printing device air inlets 1 and negative pressure exhaust wind, and the air collecting pipelines 2 are respectively connected to the air inlets 1 of each printing device.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0043] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An exhaust gas treatment device for packaging bag printing equipment, characterized in that: It includes: An air inlet (1) for printing equipment, wherein the air inlet (1) for printing equipment is fixed to one side of the printing equipment and is provided with a negative pressure exhaust fan for sucking in waste gas generated by the printing equipment; An air collecting pipeline (2), wherein the air collecting pipeline (2) is connected to an air inlet (1) of the printing device; A mounting platform (3), the mounting platform (3) being mounted above the air inlet (1) of the printing device, the air collecting pipeline (2) passing through the bottom of the mounting platform (3) to the mounting platform (3); an activated carbon purification gallery (4), the activated carbon purification gallery (4) being installed on the installation platform (3), the bottom end of which is connected to the gas collecting pipeline (2), the activated carbon purification gallery (4) extending upwardly in an inclined manner, and a plurality of activated carbon filters being arranged inside the activated carbon purification gallery (4); A catalytic oxidation box (5), the catalytic oxidation box (5) being installed on the installation platform (3), the front of the catalytic oxidation box (5) being connected to the top of the activated carbon purification gallery (4), and the catalytic oxidation box (5) being provided with an ultraviolet catalytic decomposition chamber (51) and an oxidation decomposition chamber (52) in sequence; a centrifugal fan (6), the centrifugal fan (6) being connected to the rear end of the catalytic oxidation box (5) and being used to extract the treated gas in the catalytic oxidation box (5); An exhaust chimney (7) is connected to the centrifugal fan (6), extends upward, and discharges the gas extracted by the centrifugal fan (6) upward.

2. The waste gas treatment device for packaging bag printing equipment according to claim 1, characterized in that: The bottom end of the activated carbon purification gallery (4) is provided with an adsorbent collecting hopper (41) which is detachable from the activated carbon purification gallery (4).

3. The exhaust gas treatment device for packaging bag printing equipment according to claim 1, characterized in that: The bottom of the activated carbon purification gallery (4) is provided with an openable and closable maintenance panel.

4. The exhaust gas treatment device for packaging bag printing equipment according to claim 1, characterized in that: The catalytic oxidation box (5) is provided with an openable and closable maintenance door (53).

5. The exhaust gas treatment device for packaging bag printing equipment according to claim 1, characterized in that: A staircase (31) is provided on one side of the installation platform (3).

6. The waste gas treatment device for packaging bag printing equipment according to claim 1, characterized in that: The cross section of the activated carbon purification gallery (4) gradually expands from the bottom to the top, and the window area of ​​the catalytic oxidation box (5) communicating with the activated carbon purification gallery (4) is larger than the interface area between the gas collecting pipeline (2) and the activated carbon purification gallery (4).

7. The exhaust gas treatment device for packaging bag printing equipment according to claim 1, characterized in that: The catalytic oxidation box (5) is also provided with a biological decomposition chamber, in which a bacterial biofilm for decomposing organic pollutants in the waste gas is arranged.

8. Packaging bag printing equipment, characterized in that: It comprises the waste gas treatment device as described in any one of claims 1 to 7, wherein the printing equipment comprises a plurality of machine platforms (8), the machine platforms (8) of the plurality of printing equipment are arranged side by side, and are respectively provided with printing equipment air inlets (1) and negative pressure exhaust winds, and the air collecting pipelines (2) are respectively connected to the air inlets (1) of each printing equipment.

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