A printing product drying device with tail gas purification function

Abstract

This application belongs to the field of printing equipment technology, and particularly relates to a drying device for printed materials with exhaust gas purification function. The drying device includes a base plate, a hot air blower, a column unit mounted on the base plate and housing the hot air blower, a drying cylinder unit mounted on the column unit for passing through the printing roll, an air inlet duct unit located at one end of the drying cylinder unit and connected to the hot air blower, an air outlet duct unit located at the other end of the drying cylinder unit, and a detachable activated carbon cylinder unit for connecting to the air outlet duct unit. The advantages of this application include at least the following: the drying device is suitable for printing roll materials and has the advantage of easy replacement of the detachable activated carbon cylinder unit, making its online drying with exhaust gas purification function more efficient and practical.

Description

Technical Field

[0001] This application belongs to the field of printing equipment technology, and in particular relates to a drying device for printed materials with exhaust gas purification function. Background Technology

[0002] Common printing equipment includes offset printing presses, digital printing presses, flexographic printing presses, and screen printing presses. These types of printing equipment are generally suitable for continuous printing materials such as roll paper and film, as well as discontinuous printing materials such as paper and leather.

[0003] On the other hand, after the printing process, the aforementioned printing substrate generally needs to undergo a drying process to make the text and images clearer and more stable before it can be rolled up or stacked for retraction.

[0004] The existing drying device mainly consists of a device shell, a hot air blower, and inlet and outlet air ducts, which ultimately allow the hot air to fully and appropriately blow the printing material.

[0005] For example, Chinese utility model patent with authorization announcement number CN 222080377U and authorization announcement date of 2024.11.29 discloses an environmentally friendly printing drying device based on green printing technology. Its main structural components include: drying box, control panel, mounting plate, first turntable, second turntable, air drying pipe, L-shaped plate, air jet pipe, air guide pipe, electric heating wire, and activated carbon layer.

[0006] The drying device in this utility model patent has the following advantages: it can rotate different printed materials sequentially to the position of the air drying tube or electric heating plate for air drying and drying treatment, thereby improving the uniformity of the drying effect.

[0007] However, in actual use, this drying device still has at least the following problems with the relatively poor practicality of its drying function, specifically: First, its drying operation is not suitable for continuous printing operations; Secondly, its activated carbon layer has the function of purifying exhaust gas, but the operation of disassembling and replacing the activated carbon layer itself is relatively difficult, and it is not easy to quickly remove it from the purification chamber in one go. Utility Model Content

[0008] This application provides a drying device for printed materials with exhaust gas purification function. The technical problem to be solved is: how to make the drying device have the dual characteristics of online drying and exhaust gas purification function, which are flexible and efficient.

[0009] The technical solution adopted by this application to solve the above problems is: a drying device for printed materials with exhaust gas purification function, the structure of which includes a base plate and a hot air blower, a column unit disposed on the base plate and equipped with the hot air blower, a drying cylinder unit disposed on the column unit and used to pass through the printing roll, an air inlet duct unit disposed at one end of the drying cylinder unit and connected to the hot air blower, an air outlet duct unit disposed at the other end of the drying cylinder unit, and a detachable activated carbon cylinder unit for connecting the air outlet duct unit.

[0010] A further preferred technical solution is that the column unit includes at least two vertical columns for mounting the hot air blower and the air outlet duct unit, respectively, and a horizontal plate disposed on one of the vertical columns for connecting the air outlet duct unit.

[0011] A further preferred technical solution is that the drying cylinder unit includes a straight cylinder disposed on the column unit, two baffles disposed at two ends of the straight cylinder, a through hole disposed on the baffle and used to pass through the printing roll, and two pipe holes disposed on the straight cylinder or the baffle and used to insert and install the air inlet pipe unit and the air outlet pipe unit, respectively.

[0012] A further preferred technical solution is that the air inlet duct unit includes a hot air pipe with both ends connected to the drying cylinder unit and the hot air blower, and an air inlet pipe with one end set on the hot air blower.

[0013] A further preferred technical solution is that the air outlet duct unit includes a main pipe disposed on the horizontal plate and connected at both ends to the drying cylinder unit and the detachable activated carbon cylinder unit, and an extension pipe disposed on the horizontal plate and connected at one end to the detachable activated carbon cylinder unit.

[0014] A further preferred technical solution is that the detachable activated carbon cylinder unit includes a circular cylinder, an activated carbon block disposed inside the circular cylinder for adsorbing ink, two caps disposed at the ends of the circular cylinder for abutting the main tube and the extension tube respectively, ventilation holes disposed on the caps, and elastic rings disposed on the caps for fitting the main tube or the extension tube.

[0015] A further preferred technical solution is that the column unit further includes an open ring disposed on the vertical column and used to engage and fix the detachable activated carbon cylinder unit.

[0016] A further preferred technical solution is that the air inlet duct unit further includes a reinforcing block disposed on the hot air duct and used to connect the drying cylinder unit.

[0017] A further preferred technical solution is that the column unit is provided with 2-3 of the detachable activated carbon cylinder units, which can be used selectively.

[0018] A further preferred technical solution includes: an inverted U-shaped locking block disposed on the base plate, and a U-shaped return air pipe disposed on the inverted U-shaped locking block and connected upwardly to connect the air inlet duct unit and the air outlet duct unit.

[0019] The beneficial effects of this application include at least the following three points.

[0020] First, this drying device is suitable for printing materials in roll form, and it also has the advantage of a detachable activated carbon cylinder unit that is easy to replace, making its online drying effect with exhaust gas purification function more efficient and practical.

[0021] Secondly, the drying device can flexibly switch between a return air drying type and an exhaust gas drying type.

[0022] Third, the air inlet and outlet duct units in this drying device have relatively high structural strength and are not easy to fall off. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this application.

[0024] Figure 2 This is a schematic diagram of the installation location for this application.

[0025] Figure 3 This is a schematic diagram of the drying cylinder unit in this application.

[0026] Figure 4 This is a schematic diagram of the location and structure of the column unit in this application.

[0027] Figure 5 This is a schematic diagram showing the position and shape of the open annulus in this application.

[0028] Figure 6 This is a schematic diagram of the detachable activated carbon cylinder unit in this application.

[0029] Figure 7 This is a schematic diagram of the shape of the cover in this application.

[0030] Figure 8 This is a schematic diagram illustrating the usage of the U-shaped return air duct in this application.

[0031] Figure 9 This is a schematic diagram of the shape of the inverted U-shaped card block in this application.

[0032] The meanings of the markings in the diagram are as follows.

[0033] a) Printing roll, b) Unwinding roller, c) Printing unit, d) Printing head, e) Rewinding roller; Base plate 11, hot air blower 12; Column unit 1, drying cylinder unit 2, air inlet duct unit 3, air outlet duct unit 4, detachable activated carbon cylinder unit 5, inverted U-shaped clamping block 6, U-shaped return air duct 7; Vertical column 101, horizontal plate 102, open ring 103; Straight cylinder 201, wind baffle 202, through hole 203, pipe hole 204; Hot air duct 301, air inlet duct 302, reinforcing block 303; Main tube 401, extension tube 402; Circular cylinder 501, activated carbon block 502, cover 503, ventilation hole 504, elastic ring 505. Detailed Implementation

[0034] The following description is merely a preferred embodiment of this application and is not intended to limit the scope of this application.

[0035] like Figures 1-9 As shown, a drying device for printed materials with exhaust gas purification function includes a base plate 11 and a hot air blower 12. It also includes a column unit 1 disposed on the base plate 11 and equipped with the hot air blower 12, a drying cylinder unit 2 disposed on the column unit 1 and used to pass through the printing substrate a, an air inlet duct unit 3 disposed at one end of the drying cylinder unit 2 and connected to the hot air blower 12, an air outlet duct unit 4 disposed at the other end of the drying cylinder unit 2, and a detachable activated carbon cylinder unit 5 for connecting the air outlet duct unit 4.

[0036] In this embodiment, the drying device is installed between the printing unit c and the take-up roller e. After the printed text and patterns pass through the drying device normally, a stable printing effect can be obtained, and the product can be wound up.

[0037] The main body of the drying device is made of stainless steel or engineering plastic. The base plate 11 is rectangular in shape, and the hot air blower 12 is a commercially available product that generates heat when powered. The base plate 11, the column unit 1, and the drying cylinder unit 2 are integrally formed. Hot air passes sequentially through the air inlet duct unit 3, the drying cylinder unit 2, the air outlet duct unit 4, and the detachable activated carbon cylinder unit 5. The direction of the hot air can be the same as or opposite to the forward direction of the printing roll a.

[0038] Thus, the drying device combines the advantages of online drying and exhaust gas purification, offering both flexibility and high efficiency.

[0039] Specifically, the drying cylinder unit 2 is fully connected, with the printing roll a entering from one end and exiting from the other end, and the hot air is also connected in the same way. Therefore, the hot air can blow away the printed text and patterns, achieving the effect of online drying.

[0040] In addition, the detachable activated carbon cylinder unit 5 and the air outlet duct unit 4 are connected by snap-fit, adhesive or screw-fit, which allows the former to be replaced simply and efficiently on a regular basis, ensuring that the exhaust gas purification function is flexible and efficient.

[0041] The column unit 1 includes at least two vertical columns 101 for mounting the hot air blower 12 and the air outlet duct unit 4, respectively, and a horizontal plate 102 disposed on one of the vertical columns 101 and used to connect the air outlet duct unit 4.

[0042] In this embodiment, the column unit 1 is integrally formed, the horizontal plate 102 is screwed or welded to the air outlet duct unit 4, and the mounting base plate of the hot air blower 12 is screwed onto the vertical column 101. For details, please refer to the attached document. Figure 1 .

[0043] The drying cylinder unit 2 includes a straight cylinder 201 disposed on the column unit 1, two baffles 202 disposed at two ends of the straight cylinder 201, through holes 203 disposed on the baffles 202 for passing through the printing roll a, and two pipe holes 204 disposed on the straight cylinder 201 or the baffles 202 for inserting and installing the air inlet pipe unit 3 and the air outlet pipe unit 4 respectively.

[0044] In this embodiment, the straight cylinder 201 is a cylindrical or rectangular cylinder, and the through hole 203 is rectangular in shape with its long side in the horizontal direction. Its length and width are larger than the width and thickness of the printing roll a, respectively. The relatively large range of the above dimensions is sufficient and appropriate to avoid harmful friction between the through hole 203 and the printing roll a.

[0045] In addition, the pipe hole 204 is a circular hole, and the distance between the two pipe holes 204 needs to be relatively large, so they can be directly set on the two wind deflectors 202 respectively.

[0046] The orifice 204 can be located above or below the printing substrate a. A small amount of heat dissipation air will be emitted outward through the orifice 203, which does not affect the basic drying effect of the device.

[0047] The air inlet duct unit 3 includes a hot air pipe 301 with both ends connected to the drying cylinder unit 2 and the hot air blower 12, and an air inlet pipe 302 with one end set on the hot air blower 12.

[0048] In this embodiment, the hot air duct 301 and the air inlet duct 302 are located on the upper and lower sides of the hot air blower 12, respectively. Generally, the length of the hot air duct 301 is greater than that of the air inlet duct 302. The former has a relatively complex shape in order to effectively and stably connect to the pipe hole 204, while the latter can be a straight pipe.

[0049] The air outlet duct unit 4 includes a main tube 401 disposed on the horizontal plate 102 and connected at both ends to the drying cylinder unit 2 and the detachable activated carbon cylinder unit 5, and an extension tube 402 disposed on the horizontal plate 102 and connected at one end to the detachable activated carbon cylinder unit 5.

[0050] In this embodiment, the main tube 401 and the extension tube 402 are located on the upper and lower sides of the detachable activated carbon cylinder unit 5, respectively. Generally, the length of the main tube 401 is greater than that of the extension tube 402. The former has a relatively complex shape in order to effectively and stably connect with the tube hole 204, while the latter can be a straight tube.

[0051] The detachable activated carbon cylinder unit 5 includes a circular cylinder 501, an activated carbon block 502 disposed inside the circular cylinder 501 for adsorbing ink, two caps 503 disposed at the ends of the circular cylinder 501 for abutting against the main tube 401 and the extension tube 402 respectively, a ventilation hole 504 disposed on the cap 503, and an elastic ring 505 disposed on the cap 503 for fitting the main tube 401 or the extension tube 402.

[0052] In this embodiment, the activated carbon block 502 is a commercially available product, which can be irregular granular or cylindrical. It needs to fully and appropriately fill the cylindrical body 501 and is mainly used to absorb ink in the drying exhaust gas.

[0053] The cover 503 is screwed to the cylindrical body 501 and integrally formed with the elastic ring 505, the latter being made of ordinary rubber. The inner and outer diameters of the main tube 401 and the extension tube 402 are the same. The inner diameter of the elastic ring 505 is 2-4mm smaller than the outer diameter, and its sleeve length on the main tube 401 and the extension tube 402 is 1.0-1.5cm. This allows the elastic ring 505 to fully clamp the outer ring surface of the main tube 401 and the extension tube 402, preventing a large amount of air leakage at this point. It also allows the detachable activated carbon cylinder unit 5 to be easily and conveniently pulled out and removed laterally between the main tube 401 and the extension tube 402, and pushed in laterally for installation.

[0054] During the assembly and disassembly of the detachable activated carbon cylinder unit 5, the upper and lower elastic rings 505 need to undergo appropriate deformation. The detachable activated carbon cylinder unit 5 can be installed vertically, and there is no restriction on which end is on top. The size of the ventilation hole 504 is relatively small, and it is necessary to prevent the activated carbon block 502 from passing through and falling out.

[0055] The column unit 1 also includes an open ring 103 disposed on the vertical column 101 and used to engage and fix the detachable activated carbon cylinder unit 5.

[0056] In this embodiment, the open ring 103 is directly disposed on the vertical column 101 or the horizontal plate 102, and its central angle is greater than 180°, thereby being used to fully and appropriately clamp the circular cylinder 501 laterally.

[0057] Correspondingly, the axial direction of the open ring 103 is also vertical, and its material is commonly available medium-elasticity rubber. When the cylindrical body 501 is inserted into the open ring 103, the upper and lower elastic rings 505 simultaneously engage the main tube 401 and the extension tube 402 respectively.

[0058] The air inlet duct unit 3 also includes a reinforcing block 303 disposed on the hot air duct 301 and used to connect the drying cylinder unit 2.

[0059] In this embodiment, the hot air duct 301 is more complex in shape and heavier than the air inlet duct 302. Therefore, the reinforcing block 303 is provided to connect the straight cylinder 201 and the hot air duct 301 to prevent the latter from shaking and falling.

[0060] Generally, no reinforcement structure is needed between the air inlet duct 302 and the vertical column 101.

[0061] The column unit 1 is equipped with 2-3 of the detachable activated carbon cylinder units 5, which can be used selectively.

[0062] In this embodiment, the 2-3 detachable activated carbon cylinder units 5 enable online drying operations and even the replacement of activated carbon cylinders without stopping the machine, thus making the drying operation more efficient.

[0063] Correspondingly, the column unit 1 includes 2-3 open rings 103, but only one of them is aligned with the main tube 401 and the extension tube 402 for engaging and fixing the detachable activated carbon cylinder unit 5 in use.

[0064] The structure of the drying device also includes an inverted U-shaped locking block 6 set on the base plate 11, and a U-shaped return air pipe 7 set on the inverted U-shaped locking block 6 and connected upwardly to connect the air inlet pipe unit 3 and the air outlet pipe unit 4.

[0065] In this embodiment, there are 2-3 inverted U-shaped clips 6 with their openings facing downwards. One vertical section is used to connect to the base plate 11, while the other vertical section is not connected to the base plate 11, thus serving as the disassembly and assembly / exit position for the U-shaped return air duct 7.

[0066] Correspondingly, when the horizontal section of the U-shaped return air duct 7 engages with the inverted U-shaped locking block 6, and the two vertical sections engage with the air inlet duct 302 and the extension duct 402 respectively, the drying device can flexibly switch between the return air drying type and the exhaust gas drying type.

[0067] When the drying device is a return air type drying device, the detachable activated carbon cylinder unit 5 does not need to purify the exhaust gas, but it can still adsorb ink, thereby improving the cleanliness of the entire inner surface of the device and recycling the adsorbed ink.

[0068] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of this application. These are non-inventive modifications and are protected by patent law as long as they are within the scope of the claims of this application.

Claims

1. A printing product drying device with tail gas purification function, comprising a bottom plate (11) and a hot air blower (12), characterized in that: It also includes a column unit (1) disposed on the base plate (11) and equipped with the hot air blower (12), a drying cylinder unit (2) disposed on the column unit (1) and used to pass through the printing roll (a), an air inlet duct unit (3) disposed at one end of the drying cylinder unit (2) and connected to the hot air blower (12), an air outlet duct unit (4) disposed at the other end of the drying cylinder unit (2), and a detachable activated carbon cylinder unit (5) used to connect the air outlet duct unit (4).

2. The printed product drying device with tail gas purification function according to claim 1, characterized in that: The column unit (1) includes at least two vertical columns (101) for mounting the hot air blower (12) and the air outlet duct unit (4), respectively, and a horizontal plate (102) disposed on one of the vertical columns (101) for connecting the air outlet duct unit (4).

3. The printing product drying device with tail gas purification function according to claim 1, characterized in that: The drying cylinder unit (2) includes a straight cylinder (201) disposed on the column unit (1), two baffles (202) respectively disposed at two end positions on the straight cylinder (201), a through hole (203) disposed on the baffle (202) for passing through the printing roll (a), and two pipe holes (204) disposed on the straight cylinder (201) or the baffle (202) for inserting and installing the air inlet pipe unit (3) and the air outlet pipe unit (4).

4. The printed product drying device with tail gas purification function according to claim 1, characterized in that: The air inlet duct unit (3) includes a hot air pipe (301) with both ends connected to the drying cylinder unit (2) and the hot air blower (12), and an air inlet pipe (302) with one end set on the hot air blower (12).

5. The printed product drying device with tail gas purification function according to claim 2, characterized in that: The air outlet duct unit (4) includes a main tube (401) disposed on the horizontal plate (102) and connected at both ends to the drying cylinder unit (2) and the detachable activated carbon cylinder unit (5), and an extension tube (402) disposed on the horizontal plate (102) and connected at one end to the detachable activated carbon cylinder unit (5).

6. The printed product drying apparatus with tail gas purification function according to claim 5, characterized in that: The detachable activated carbon cylinder unit (5) includes a cylindrical body (501), an activated carbon block (502) disposed inside the cylindrical body (501) for adsorbing ink, two caps (503) disposed at the end of the cylindrical body (501) for abutting the main tube (401) and the extension tube (402) respectively, a ventilation hole (504) disposed on the cap (503), and an elastic ring (505) disposed on the cap (503) for fitting the main tube (401) or the extension tube (402).

7. The printed product drying device with tail gas purification function according to claim 2, characterized in that: The column unit (1) also includes an open ring (103) disposed on the vertical column (101) and used to engage and fix the detachable activated carbon cylinder unit (5).

8. The printed product drying apparatus with tail gas purification function according to claim 4, characterized in that: The air inlet duct unit (3) also includes a reinforcing block (303) disposed on the hot air duct (301) and used to connect the drying cylinder unit (2).

9. The printed product drying device with tail gas purification function according to claim 1, characterized in that: The column unit (1) is provided with 2-3 of the detachable activated carbon cylinder units (5) that can be used selectively.

10. The printed product drying apparatus having a tail gas purification function according to claim 1, characterized in that: It also includes an inverted U-shaped locking block (6) disposed on the base plate (11), and a U-shaped return air pipe (7) disposed on the inverted U-shaped locking block (6) and connected by an upward sleeve to connect the air inlet duct unit (3) and the air outlet duct unit (4).

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