Air purifying device with humidifying function for printing room of press

Abstract

The invention relates to the technical field of press printing equipment, in particular to an air purification device with a humidifying function for a press printing room, which comprises a unit shell, and a mixing cavity, a primary filter screen, a cooling coil, an adsorption plate, a heating coil, a humidifying component, a fan and a medium filter screen are sequentially arranged in the unit shell along the airflow direction. The two sides of the adsorption plate are in sliding fit with the inner side wall of the unit shell, a check block is fixedly connected to the inner bottom wall of the unit shell, a telescopic plate is fixedly connected to the side wall of the check block, a wedge-shaped block is fixedly connected to the telescopic plate, the bottom of the adsorption plate makes contact with the inclined face of the wedge-shaped block, a control assembly is arranged on the wedge-shaped block, and a plurality of first springs are fixedly connected to the wedge-shaped block. The other end of each first spring is fixedly connected with the side wall of the corresponding check block, and an air injection assembly is arranged on the unit shell. According to the air purifier, the adsorption plate is cleaned in the unit shell, so that the time for replacing the adsorption plate after shutdown is saved, continuous air purification is ensured, and meanwhile, the input cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of printing equipment technology for publishing houses, and specifically to an air purification device with humidification function for use in the printing room of a publishing house. Background Technology

[0002] During the printing process, publishing houses use a variety of chemical substances such as ink, thinner, and cleaning agents. When these substances evaporate, they release volatile organic compounds (VOCs), such as benzene, toluene, and xylene. At the same time, the operation of printing equipment also generates particulate matter such as paper dust and toner. These pollutants not only harm the health of employees, but excessive dust accumulation in the air may also adhere to the surface of printed materials, affecting printing quality, and may even pose safety hazards if the dust reaches a certain concentration. Existing Trane air handling units include an intake mixing section, a filtration section, an activated carbon filtration section, a heat and humidity treatment section, a humidification and dehumidification section, a fan section, a noise reduction and airflow equalization section, and a control and monitoring section. By proportionally drawing in and mixing fresh air and indoor return air, they balance energy consumption and indoor air freshness. The mixed air first passes through a pre-filter to intercept hair, dust, and other particles, providing initial protection for subsequent processing stages. Then, the air flows through cooling coils, where the low-temperature coil surface lowers the air temperature below the dew point, achieving forced cooling and dehumidification, where excess moisture condenses. Finally, clean steam is injected into the dry air through an electrode-type or electric heating humidifier to increase humidity. The target humidity is achieved through a precise "reheating" process using an electric heating section or a hot water heating section to compensate for any overly cold air after cooling and dehumidification, maintaining a constant temperature and humidity. The air, now at the target temperature and humidity, passes through an activated carbon filter section, effectively adsorbing volatile organic compounds, odors, and other gaseous pollutants. After all treatment, the air is drawn in by a high-efficiency centrifugal fan, which provides the necessary power to overcome subsequent resistance and ultimately deliver the air into the room. Before being delivered, the air undergoes final purification through a medium-efficiency or even high-efficiency filter section to capture fine particulate matter, ensuring the safety of the delivered air in terms of microorganisms and particulate matter levels. Finally, the air, treated to an ideal state, is evenly distributed to the controlled space through an air delivery duct system.

[0003] The entire process is monitored and intelligently controlled in real time by Trane's Tracer control system. Data is collected by sensors throughout the system, precisely directing all components, including valves, fans, and humidifiers, to work in unison. This ensures a stable, safe, and comfortable air environment in the printing room, maintaining constant temperature, humidity, cleanliness, and freshness. However, the humidity in the printing room typically needs to be maintained between 50% and 60% RH to prevent excessive humidity from causing paper to absorb water and deform, and excessive humidity from causing static electricity and paper curling, which can negatively impact printing efficiency. After entering the air handling unit, the air is filtered through a pre-filter. The pre-filtered air then... Activated carbon adsorbs water molecules and organic molecules from the air. Due to the high humidity requirements in printing rooms, the water content in the air is relatively high. However, the adsorption capacity of activated carbon is limited. When the pore structure inside the activated carbon is filled with molecules, the activated carbon will reach saturation and lose its ability to continue adsorbing. Once the adsorption amount reaches the critical point of its own weight, the purification effect will drop sharply until it reaches zero, and it may even become a secondary source of pollution. This is because the adsorbed pollutants may be re-desorbed and released when the temperature or airflow changes. Replacing activated carbon requires shutting down the machine for replacement. The material costs consumed during replacement, as well as the labor and time costs incurred by shutting down the machine for replacement, are considerable investments, thus reducing the efficiency of air purification.

[0004] Therefore, this invention proposes an air purification device with humidification function for use in the printing room of a publishing house to solve the above problems. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides an air purification device for a publishing house's printing room with a humidification function. By cleaning the adsorption plates inside the unit's casing, it saves time spent replacing the adsorption plates during downtime, ensuring continuous air purification while reducing investment costs.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: An air purification device for a publishing house printing room with humidification function includes a unit housing. Return air inlets and supply air inlets are respectively opened on both sides of the unit housing along its length. Inside the unit housing, along the airflow direction, a mixing chamber, a primary filter, a cooling coil, an adsorption plate, a heating coil, a humidification component, a fan, and a medium-efficiency filter are arranged sequentially. A fresh air inlet is connected to the top of the mixing chamber. The heating coil is signal-connected to a controller. The two sides of the adsorption plate are slidably engaged with the corresponding inner walls of the unit housing. A humidification component is fixedly connected to the bottom wall of the unit housing between the cooling coil and the adsorption plate. The unit has a stop between the plates. A telescopic plate is fixedly connected to the side wall of the stop near the adsorption plate. A wedge block located below the adsorption plate is fixedly connected to the side of the telescopic plate away from the stop. The bottom of the adsorption plate contacts the inclined surface of the wedge block. The inclined surface of the wedge block is higher on the side near the telescopic plate than on the other side. Several first springs are fixedly connected to the side wall of the wedge block near the stop. The other end of each first spring is fixedly connected to the side wall of the stop. The wedge block is equipped with a control component for triggering the movement of the heating coil to heat the adsorption plate based on the vertical position of the adsorption plate. The unit housing is equipped with an air jet component for cleaning the adsorption plate, triggered by the movement of the wedge block.

[0007] The technical principle of the above solution is as follows: Fresh air and return air from the printing room are mixed in a proportional manner through a mixing chamber to balance energy consumption and air freshness; then, a primary filter intercepts hair, large dust particles, etc., providing initial protection for subsequent processing; the air temperature is lowered to below the dew point by a low-temperature coil, achieving cooling and dehumidification; then, an adsorption plate adsorbs water molecules, organic compound molecules, and odors; a heating coil compensates for the undercooled air after cooling and dehumidification by "reheating," adjusting the air temperature to the target temperature; and water vapor is injected into the dried air through a humidification component box, raising the air humidity to the range required by the printing room; finally, a fan powers the transport of the treated air to the medium-efficiency filter. After fine particles (such as toner) in the air are captured by a medium-efficiency filter, the air is finally delivered into the printing room through the air outlet. When the activated carbon adsorbent on the adsorption plate is saturated or nearly saturated, the weight of the adsorption plate increases and applies downward pressure to the inclined surface of the wedge block. The inclined surface of the wedge block decomposes the downward pressure into a lateral thrust, pushing the wedge block closer to the stop block and squeezing the first spring to store energy. During the movement of the wedge block, the jet assembly is triggered to jet air onto the side of the adsorption plate, causing the molecules on the adsorption plate to fall off. At the same time, the movement of the wedge block moves the heating coil closer to the adsorption plate, causing the water molecules on the adsorption plate to evaporate and fall off. Meanwhile, the temperature of the adsorption plate increases, reducing its adsorption force, which in turn helps the organic molecules fall off.

[0008] The above solution offers the following advantages: Compared to existing adsorption plate replacement methods, this solution utilizes the weight change of the adsorption plate after it becomes saturated to drive the jet assembly, causing molecules on the adsorption plate to detach and enter the collection chamber, thus cleaning the adsorption plate without requiring shutdown for replacement and avoiding reduced purification efficiency due to downtime. Simultaneously, the weight change of the adsorption plate brings the heating coil closer to the adsorption plate, increasing its temperature and reducing its adsorption force, which helps organic molecules detach. Water molecules also evaporate, further improving the detachment efficiency of molecules on the adsorption plate. By utilizing the temperature of the jet assembly and heating coil, the adsorption plate is cleaned within the air purifier unit, not only improving the purification efficiency of the air purifier unit (without requiring shutdown for replacement) but also saving the labor and time costs associated with replacing the adsorption plate.

[0009] Furthermore, the control assembly includes a connecting plate, which is fixedly connected to the side of the wedge block away from the telescopic plate. The side of the connecting plate away from the wedge block is fixedly connected to the bottom of the heating coil sidewall. The bottom of both the wedge block and the connecting plate slides against the bottom wall of the unit housing.

[0010] Beneficial effects: The wedge block and connecting plate drive the heating coil closer to the adsorption plate, causing water molecules on the adsorption plate to evaporate and detach from the adsorption plate. At the same time, the temperature of the adsorption plate increases, reducing its adsorption force, which in turn helps organic molecules to fall off.

[0011] Furthermore, the jet assembly includes an air pump, which is fixedly connected to the outer wall of the unit housing. The side wall of the unit housing has an opening corresponding to the adsorption plate, which communicates with the air pump. A second spring is fixedly connected to the switch interface on the side wall of the air pump, and a start button is fixedly connected to the other end of the second spring. The start button is designed with an arc structure. The second spring and the start button pass through the side wall of the unit housing. The start button is located within the movement trajectory of the wedge block. The start button extends into the unit housing and contacts the side wall of the wedge block. The other side of the inner side wall of the unit housing is connected to a collection chamber corresponding to the adsorption plate.

[0012] Beneficial effects: When the molecules adsorbed on the adsorption plate reach saturation, the weight of the adsorption plate increases and it decreases, which applies a pushing force to the wedge block. The wedge block moves towards the stop block and presses the start button within its movement trajectory. The start button compresses the second spring and starts the air pump. The positive pressure generated by the air pump is applied to the adsorption plate through the port, blowing the molecules off the adsorption plate and allowing them to enter the collection chamber, thereby cleaning the adsorption plate.

[0013] Furthermore, a one-way valve is installed inside the inlet.

[0014] Beneficial effect: The one-way valve design keeps the port closed when the air pump is not running (the start button is not triggered), preventing air from leaking out of the unit casing through the port.

[0015] Furthermore, a door panel is hinged to the side wall of the collection chamber, and a torsion spring is provided at the hinge point between the door panel and the collection chamber.

[0016] Beneficial effects: When the air pump generates positive pressure through the cooperation of the door panel and the torsion spring, it applies a pushing force to the door panel to squeeze the torsion spring, opening the collection chamber and ensuring that the detached molecules enter the collection chamber. After the air pump is turned off, the elastic deformation of the torsion spring causes the door panel to close, preventing the molecules in the collection chamber from re-entering the unit casing.

[0017] Furthermore, a limiting plate is provided on the side of the heating coil away from the adsorption plate, and the bottom of the limiting plate is fixedly connected to the bottom wall of the unit casing.

[0018] Beneficial effect: The design of the limiting plate prevents the first spring from rebounding with excessive force, which would cause the inclined surface of the wedge block to be unable to be located below the adsorption plate (initial position), making the adsorption plate stuck on the right-angle side of the wedge block, and thus preventing the adsorption plate from being triggered for the next cleaning.

[0019] Furthermore, the bottom of the collection chamber is connected to an exhaust port, and a cap is detachably connected to the exhaust port.

[0020] Beneficial effect: Staff can periodically collect the discharged molecules through the exhaust port, providing collection capacity for the next cleaning of the adsorption plate.

[0021] Furthermore, the humidification component includes a humidifier, which is signal-connected to the controller. The humidifier is connected to a delivery pipe, and a diffusion net is fixedly connected to the other end of the delivery pipe. Several nozzles are fixedly connected to the diffusion net, and all nozzles are connected to the delivery pipe.

[0022] Beneficial effects: The humidifier generates water vapor, which is then transported to the diffuser through a delivery pipe and evenly dispersed into the airflow through multiple nozzles, ensuring uniform humidification.

[0023] Furthermore, a temperature sensor is installed inside the mixing chamber, and the temperature sensor is connected to the controller signal.

[0024] Beneficial effects: By monitoring the temperature of the fresh air and return air mixture in real time through a temperature sensor, the controller can automatically adjust the heating power of the heating coil based on the difference between the temperature of the mixing chamber and the target temperature (e.g., increase the heating power when the temperature is too low and decrease it when the temperature is too high), thus achieving precise pre-adjustment of the air temperature.

[0025] Furthermore, a humidity sensor corresponding to the humidifier is installed on the inner wall of the unit casing, and the humidity sensor is connected to the controller signal.

[0026] Beneficial effects: Real-time feedback from the humidity sensor avoids over- or under-humidification, ensuring that the humidity of the air sent into the printing room remains stable within the process requirements. This effectively prevents paper from becoming brittle due to excessively low humidity and static electricity buildup, or misregistration due to excessively high humidity.

[0027] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] Figure 1 This is an overall isometric view of an embodiment of the air purification device for a publishing house printing room with humidification function according to the present invention; Figure 2 This is a side sectional view of the outer casing of an embodiment of the air purification device for a publishing house printing room with humidification function according to the present invention; Figure 3 This is a side sectional view of the adsorption plate of an embodiment of the air purification device for a publishing house printing room with humidification function according to the present invention; Figure 4 This is a front sectional view of the adsorption plate of an embodiment of the air purification device for a publishing house printing room with humidification function according to the present invention; Figure 5 This is an appendix to an embodiment of the air purification device for a publishing house printing room with humidification function according to the present invention. Figure 4 -Detailed drawing at point A.

[0029] The reference numerals in the accompanying drawings of the instruction manual include: 1. Unit casing; 2. Return air inlet; 3. Fresh air inlet; 4. Mixing chamber; 5. Primary filter; 6. Cooling coil; 7. Adsorption plate; 8. Heating coil; 9. Limiting plate; 10. Humidifier; 11. Delivery pipe; 12. Diffuser; 13. Fan; 14. Medium-efficiency filter; 15. Air outlet; 16. Wedge block; 17. Start button; 18. Telescopic plate; 19. First spring; 20. Stop block; 21. Connecting plate; 22. Air pump; 23. Through port; 24. Collection chamber; 25. Door panel; 26. Exhaust port; 27. Cap; 28. Second spring. Detailed Implementation

[0030] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] The following detailed description illustrates the specific implementation method: Example 1:

[0034] As attached Figure 1 and attached Figure 2 The following describes an air purification device for a publishing house's printing room with humidification function. It includes a unit housing 1, with return air inlets 2 and supply air inlets 15 on both sides along its length. Inside the housing 1, along the airflow direction, are arranged a mixing chamber 4, a primary filter 5, a cooling coil 6, an adsorption plate 7, a heating coil 8, a humidification assembly, a fan 13, and a medium-efficiency filter 14. A fresh air inlet 3 connects to the top of the mixing chamber 4. The condensing coil 6 is preferably a Trane CWSA chilled water coil, and the heating coil 8 is preferably a Trane HCE hot water heating coil 8. The adsorption plate 7 is made of activated carbon. The heating coil 8 is connected to a controller, preferably a Siemens Desigo CC. The fan 13 is preferably an EBM-Papst. The humidification assembly includes a humidifier 10, preferably a Carel humidifier. Humid electrode humidifier 10 is connected to the controller signal. The humidifier 10 is connected to a delivery pipe 11. The other end of the delivery pipe 11 is fixedly connected to a diffusion net 12. Several nozzles are fixedly connected to the diffusion net 12. All nozzles are connected to the delivery pipe 11. Due to the specific humidity requirements of the printing room (50%-60% RH), the air at return air vent 2 has a high water molecule content. However, the adsorption capacity of the adsorption plate 7 is limited (activated carbon adsorption capacity is limited). When the adsorption plate 7 is saturated, the pores of the activated carbon on it are filled, and it can no longer adsorb air. At this point, the adsorption plate 7 needs to be replaced. The current replacement method is to shut down the unit for replacement. During shutdown, the air purification unit cannot treat the air in the printing room, which reduces purification efficiency. Furthermore, replacing the adsorption plate 7 incurs labor and time costs. To improve the working efficiency of the air purification unit, as shown in the attached... Figure 2 and attached Figure 3 As shown, the adsorption plate 7 is slidably fitted to the inner wall of the unit housing 1 via grooves and rails on both sides (restricting the adsorption plate 7 to only vertical movement). A stop block 20 is welded to the bottom inner wall of the unit housing 1, located between the cooling coil 6 and the adsorption plate 7. The stop block 20 has a right-angled triangular cross-section (the inclined surface of the right-angled triangle guides the air). A telescopic plate 18 is welded to the side wall of the stop block 20 near the adsorption plate 7. A wedge-shaped block 16 is welded to the side of the telescopic plate 18 away from the stop block 20, located below the adsorption plate 7. The bottom of the adsorption plate 7 contacts the inclined surface of the wedge block 16. The inclined surface of the wedge block 16 is higher on the side near the telescopic plate 18 than on the other side. A [missing information - likely a design element] is welded to the side of the wedge block 16 near the stop block 20. A plurality of first springs 19 are provided, the other end of each first spring 19 being welded to the side wall of the stop block 20. The wedge block 16 is provided with a control component for triggering the movement of the heating coil 8 to heat the adsorption plate 7 based on the vertical position of the adsorption plate 7. The control component includes a connecting plate 21, which is welded to the side of the wedge block 16 away from the telescopic plate 18. The side of the connecting plate 21 away from the wedge block 16 is welded to the bottom of the side wall of the heating coil 8. The bottom of the wedge block 16 and the connecting plate 21 are slidably engaged with the bottom wall of the unit housing 1 through a T-shaped slide rail and a T-shaped slide groove. The inclined surface of the wedge block 16 and the bottom of the adsorption plate 7 are both provided with a polytetrafluoroethylene coating to reduce the movement resistance between the adsorption plate 7 and the wedge block 16. The unit housing 1 is equipped with an air jet assembly for cleaning the adsorption plate 7, triggered by the movement of a wedge block 16. The air jet assembly includes an air pump 22, preferably a FEST0 ESBF model. The air pump 22 is welded to the outer wall of the unit housing 1. The side wall of the unit housing 1 has an opening 23 corresponding to the adsorption plate 7, which communicates with the air pump 22. A one-way valve is installed in the opening 23 (to prevent air from escaping through the opening 23 when the air pump 22 is not running). A second spring 28 is welded to the switch interface on the side wall of the air pump 22, and a start button 17 is welded to the other end of the second spring 28 (in conjunction with the attached...). Figure 5The start button 17 is designed with an arc structure. The second spring 28 and the start button 17 pass through the side wall of the unit housing 1. The start button 17 is located within the movement trajectory of the wedge block 16. The start button 17 extends into the unit housing 1 and contacts the side wall of the wedge block 16. The movement of the wedge block 16 compresses the start button 17 and the second spring 28, and the second spring 28 presses the switch interface of the air pump 22 to start the air pump 22. The other side of the inner side wall of the unit housing 1 is connected to a collection chamber 24 corresponding to the adsorption plate 7. In order to prevent the first spring 19 from rebounding and causing the wedge block 16 to rebound excessively, so that the adsorption plate 7 is stuck at the side wall of the wedge block 16, as shown in the attached figure. Figure 3 As shown, a limiting plate 9 is provided on the side of the heating coil 8 away from the adsorption plate 7, and the bottom of the limiting plate 9 is welded to the bottom wall of the inner wall of the unit housing 1. To prevent molecules detached from the adsorption plate 7 from becoming free inside the unit casing 1 and ultimately re-adsorbing onto the adsorption plate 7, a combination of adsorption... Figure 1 and attached Figure 4 A door panel 25 is hinged to the side wall of the collection chamber 24. A torsion spring is provided at the hinge point between the door panel 25 and the collection chamber 24. The door panel 25 is opened by the positive pressure thrust of the air pump 22 through the cooperation of the torsion spring and the door panel 25. After the positive pressure of the air pump 22 disappears, the door panel 25 closes to prevent the molecules that have been detached from being adsorbed onto the adsorption plate 7 again. An exhaust port 26 is connected to the bottom of the collection chamber 24. A cap 27 is detachably connected to the exhaust port 26 to facilitate the staff to discharge the collected organic compound molecules through the exhaust port 26.

[0035] The specific implementation process is as follows: When the air in the printing room of the publishing house enters the unit casing 1 through the return air inlet 2, it is first mixed with the fresh air introduced by the fresh air inlet 3 in a certain proportion in the mixing chamber 4. Then the mixed air flows through the adsorption plate 7, and the activated carbon in the adsorption plate 7 adsorbs water molecules in the air in the printing room, as well as gaseous pollutant molecules such as VOCs and odors generated during the printing process. Since the humidity in the printing room is usually required to be controlled at 50%-60%RH, too high humidity will cause the paper to absorb water and deform, and the ink to dry slowly. Too low humidity will cause serious static electricity, paper curling and adsorption, affecting the printing speed and causing misregistration. In workshops with serious static electricity, it will also cause great damage to the printing equipment and easily cause malfunctions. When the air from the printing room enters the unit casing 1 through the return air vent 2 (with its own humidity of 55-65%RH), it is mixed with the fresh air introduced from the fresh air vent 3 in a proportionate manner in the mixing chamber 4. The mixed air then flows through the primary filter 5, which intercepts impurities such as hair and large dust particles, providing initial protection for subsequent processing. Next, the air enters the cooling coil 6 area, where the air temperature is lowered below the dew point by the surface of the low-temperature coil, achieving cooling. The cooled air continues to pass through the adsorption plate 7, where the activated carbon in the adsorption plate 7 adsorbs water molecules in the air as well as gaseous pollutants such as VOCs (volatile organic compounds) and odors that are volatilized during the printing process. The air then flows through the heating coil 8, which "reheats" the cooled air to compensate for the overcooled air and precisely adjusts the air temperature to the target range. It then enters the humidification component area, where the humidifier 10 is started under the control of the controller. The water vapor generated is transmitted to the diffuser 12 through the delivery pipe 11, and then evenly dispersed into the airflow through multiple nozzles on the diffuser 12. The air with the temperature and humidity regulated is then transported to the medium-efficiency filter 14 by the power of the fan 13 to further capture the fine particles (such as toner) remaining in the air. Finally, the clean air after filtration and purification is sent into the printing room through the air outlet 15 to provide a stable and suitable temperature, humidity and cleanliness environment for the printing process. During the continuous air purification process, the air humidity requirement in the printing room (50%-60%RH) results in a high water molecule content in the air. As the water molecules and some pollutant molecules adsorbed on the adsorption plate 7 gradually increase until saturation, the weight of the adsorption plate 7 continuously increases and applies downward pressure to the inclined surface of the wedge block 16 below. The inclined surface of the wedge block 16 decomposes the vertical pressure into a lateral thrust, pushing the wedge block 16 towards the stop block 20. At the same time, it compresses the first spring 19 to store power. During the movement of the wedge block 16, the side wall of the wedge block 16 contacts and presses the start button 17 located within the movement trajectory. The start button 17 compresses the second spring 28 and triggers the air pump 22 to start. The positive pressure generated by the air pump 22 acts on the surface of the adsorption plate 7 through the port 23, blowing off the saturated water molecules and pollutant molecules on the adsorption plate 7. At this time, the door panel 25 of the collection chamber 24 opens under the action of the positive pressure thrust, overcoming the torsion spring force. The detached water molecules and pollutant molecules enter the collection chamber 24 with the airflow to clean the adsorption plate 7. As the wedge block 16 approaches the stop block 20, it drives the heating coil 8 to approach the adsorption plate 7 through the connecting plate 21. The heating coil 8 heats the adsorption plate 7, raising its temperature and evaporating the water molecules on the adsorption plate 7, thus improving the cleaning efficiency of the adsorption plate 7. At the same time, it reduces the adsorption force of the activated carbon, accelerates the shedding of water molecules and pollutant molecules, and further improves the cleaning efficiency. After the water molecules and pollutant molecules on the adsorption plate 7 are removed, its weight is reduced. The elastic force of the first spring 19 pushes the wedge block 16 to move in the opposite direction and reset. After the wedge block 16 disengages from the start button 17, the second spring 28 drives the start button 17 to rebound and shut down the air pump 22 (the one-way valve in the port 23 ensures that air will not leak out of the unit housing 1 when the air pump 22 is not started). The door plate 25 closes automatically under the action of the torsion spring to prevent pollutants in the collection chamber 24 from flowing back. The heating coil 8 returns to its initial position under the action of the wedge block 16. The limiting plate 9 prevents the wedge block 16 from rebounding too much and causing the adsorption plate 7 to get stuck on the right-angle side of the wedge block 16. The staff can periodically open the cap 27 on the exhaust port 26 at the bottom of the collection chamber 24 to discharge the collected molecules and ensure the continuous and stable operation of the device. The entire process can be completed without stopping the machine, ensuring the continuity of air purification.

[0036] A comparison was made between the air purification device with humidification function used in the publishing house's printing room according to Example 1 and the Trane air handling unit. The specific experiments are as follows: Experimental Objective: To compare and evaluate the performance differences between the air purification device with humidification function for a publishing house printing room described in Example 1 and the Trane air handling unit in actual operation; to focus on the performance of the two devices in terms of air purification efficiency (including volatile organic compounds VOCs and particulate matter removal rate), operational continuity (downtime), maintenance costs (material and labor consumption), and energy consumption, so as to verify the advantages of the device in Example 1 in automatically cleaning the adsorption plate and avoiding downtime for replacement, and to provide data support for the selection of air purification equipment for publishing house printing rooms.

[0037] Experimental steps: 1. Experimental Environment Setup: The apparatus of Example 1 and a Trane air handling unit were installed in two separate simulated printing chambers (each with a volume of 100 m³) in publishing houses. The same initial environmental conditions were maintained in the simulated chambers: temperature 25°C and humidity 50%. VOCs (represented by toluene) and particulate matter (PM2.5) generated during the printing process were simulated using a standard ink evaporation source and a paper dust generator.

[0038] 2. Monitoring of operating parameters: Both sets of devices operate simultaneously for 30 consecutive days. Air samples are collected from the simulated chamber at fixed times each day (e.g., 10:00 AM). VOC concentration is measured using a gas chromatograph, particulate matter concentration is measured using a laser particle counter, and energy consumption data is recorded (read from the electricity meter).

[0039] 3. Maintenance event log: Record the number of shutdowns required for the Trane unit due to activated carbon saturation, the replacement time, and the material consumption; record the number of times the automatic cleaning of the adsorption plate of the device in Example 1 was triggered, the cleaning duration, and the sewage discharge status of the collection chamber.

[0040] 4. Data processing: Calculate the daily purification efficiency (purification efficiency = (initial concentration - current concentration) / initial concentration × 100%), and calculate the total downtime, maintenance costs and energy consumption.

[0041] Experimental data: Experimental conclusion: Through a 30-day continuous operation experiment, the device in Example 1 was comparable to the Trane air handling unit in terms of air purification efficiency (VOCs and particulate matter removal rate), both maintaining a high level of purification. However, the device in Example 1 significantly outperformed the Trane unit in terms of operational continuity and maintenance costs: the device in Example 1 automatically triggered a cleaning mechanism based on changes in the weight of the adsorption plates, achieving zero downtime, while the Trane unit experienced a cumulative downtime of 8 hours due to activated carbon replacement, affecting the continuity of air purification; at the same time, the device in Example 1 did not require replacement of the adsorption plates, only periodic sludge removal, reducing material costs and labor input. Energy consumption was similar for both. Therefore, the device in Example 1 is more suitable for publishing houses and printing rooms requiring continuous air purification, improving operational economy and efficiency while ensuring purification effectiveness.

[0042] Example 2:

[0043] As attached Figure 2 As shown, the difference from Example 1 is that the optimal temperature and humidity range of the printing workshop is usually maintained between 23°C and 26°C, and the relative humidity is maintained between 50% and 60%. Such environmental conditions are conducive to the smooth progress of the printing process and can effectively ensure the quality of the printed products. If the temperature is too high, the ink may dry too quickly, causing the surface of the printed products to form a skin or stick, affecting the appearance and quality of the printed products, and may also cause the paper to curl and deform, affecting the flatness of the printing. On the other hand, if the humidity is too high, the paper will absorb water and deform, and the ink will dry slowly. If the humidity is too low, static electricity will occur. In workshops with severe static electricity, it will also cause great damage to the printing equipment and easily cause malfunctions. Therefore, in order to accurately control the temperature and humidity of the printing room, a temperature sensor is installed in the mixing chamber 4. The preferred model of the temperature sensor is Siemens QFAQFA2060. The temperature sensor is connected to the controller signal. A humidity sensor corresponding to the humidifier 10 is installed on the inner wall of the unit housing 1. The preferred model of the humidity sensor is Honeywell H700. The humidity sensor is connected to the controller signal.

[0044] The specific implementation process is as follows: When the air from the printing room enters the unit casing 1 through the return air vent 2, it is first mixed with the fresh air introduced from the fresh air vent 3 in a proportional manner in the mixing chamber 4 to balance energy consumption and air freshness. At this time, the temperature sensor in the mixing chamber 4 monitors the temperature of the mixed air in real time and transmits the data to the controller. When the air flows through the heating coil 8, the controller adjusts the heating power of the heating coil 8 according to the data fed back by the temperature sensor in the mixing chamber 4 to "reheat" the cooled air and accurately adjust the air temperature to the target range. Subsequently, the air enters the humidification component area, and the humidity sensor monitors the humidity of the humidified air in real time and feeds the data back to the controller. The controller dynamically adjusts the water spray volume of the humidifier 10 according to the target humidity (such as the 50%-60% humidity required by the printing room) to ensure that the air humidity meets the requirements of the printing process and to ensure a stable and suitable temperature and humidity working environment for the printing process.

[0045] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An air purification device for a publishing house printing room with humidification function, comprising a unit housing (1), with return air inlets (2) and supply air inlets (15) respectively opened on both sides along the length direction of the unit housing (1), and a mixing chamber (4), a primary filter (5), a cooling coil (6), an adsorption plate (7), a heating coil (8), a humidification component, a fan (13), and a medium-efficiency filter (14) arranged sequentially along the airflow direction inside the unit housing (1), the top of the mixing chamber (4) being connected to a fresh air inlet (3), and the heating coil (8) being signal-connected to a controller, characterized in that: The adsorption plate (7) is slidably fitted to the inner wall of the corresponding unit housing (1) on both sides. A stop (20) is fixedly connected to the bottom wall of the unit housing (1) between the cooling coil (6) and the adsorption plate (7). A telescopic plate (18) is fixedly connected to the side wall of the stop (20) near the adsorption plate (7). A wedge block (16) is fixedly connected to the side of the telescopic plate (18) away from the stop (20) below the adsorption plate (7). The bottom of the adsorption plate (7) contacts the inclined surface of the wedge block (16). 16) The side of the inclined plane near the telescopic plate (18) is higher than the other side. Several first springs (19) are fixedly connected to the side of the wedge block (16) near the baffle. The other end of each first spring (19) is fixedly connected to the side wall of the baffle (20). The wedge block (16) is provided with a control component for triggering the movement of the heating coil (8) to heat the adsorption plate (7) based on the vertical position of the adsorption plate (7). The unit housing (1) is provided with a jet assembly for cleaning the adsorption plate (7) triggered by the movement of the wedge block (16).

2. The air purification device for a publishing house printing room with humidification function according to claim 1, characterized in that: The control assembly includes a connecting plate (21), which is fixedly connected to the wedge block (16) on the side away from the telescopic plate (18). The side of the connecting plate (21) away from the wedge block (16) is fixedly connected to the bottom of the side wall of the heating coil (8). The bottom of the wedge block (16) and the connecting plate (21) are both slidably engaged with the bottom wall of the unit housing (1).

3. The air purification device for a publishing house printing room with humidification function according to claim 1, characterized in that: The jet assembly includes an air pump (22), which is fixedly connected to the outer wall of the unit housing (1). The side wall of the unit housing (1) has an opening (23) corresponding to the adsorption plate (7), which is connected to the air pump (22). A second spring (28) is fixedly connected to the switch interface on the side wall of the air pump (22). A start button (17) is fixedly connected to the other end of the second spring (28). The start button (17) is designed as an arc structure. The second spring (28) and the start button (17) pass through the side wall of the unit housing (1). The start button (17) is located within the movement trajectory of the wedge block (16). The start button (17) extends into the unit housing (1) and contacts the side wall of the wedge block (16). The other side of the inner side wall of the unit housing (1) is connected to a collection chamber (24) corresponding to the adsorption plate (7).

4. The air purification device for a publishing house printing room with humidification function according to claim 3, characterized in that: A one-way valve is installed inside the inlet (23).

5. The air purification device for a publishing house printing room with humidification function according to claim 4, characterized in that: A door panel (25) is hinged to the side wall of the collection chamber (24), and a torsion spring is provided at the hinge point between the door panel (25) and the collection chamber (24).

6. The air purification device for a publishing house printing room with humidification function according to claim 5, characterized in that; A limiting plate (9) is provided on the side of the heating coil (8) away from the adsorption plate (7), and the bottom of the limiting plate (9) is fixedly connected to the bottom wall of the unit casing (1).

7. The air purification device for a publishing house printing room with humidification function according to claim 6, characterized in that: The bottom of the collection chamber (24) is connected to an exhaust port (26), and a cap (27) is detachably connected to the exhaust port (26).

8. The air purification device for a publishing house printing room with humidification function according to claim 1, characterized in that: The humidification assembly includes a humidifier (10), which is connected to the controller via a signal. The humidifier (10) is connected to a delivery pipe (11), and a diffusion net (12) is fixedly connected to the other end of the delivery pipe (11). Several nozzles are fixedly connected to the diffusion net (12), and all nozzles are connected to the delivery pipe (11).

9. The air purification device for a publishing house printing room with humidification function according to claim 1, characterized in that: A temperature sensor is installed inside the mixing chamber (4), and the temperature sensor is connected to the controller signal.

10. The air purification device for a publishing house printing room with humidification function according to claim 1, characterized in that: The inner wall of the unit casing (1) is equipped with a humidity sensor corresponding to the humidifier (10), and the humidity sensor is connected to the controller signal.

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