A waste heat recovery device for flexographic printing presses

Abstract

This utility model discloses a waste heat recovery device for a flexographic printing press, relating to the field of waste heat recovery technology for printing presses. It includes a base, with a drying chamber fixedly mounted on the upper end of the base, and an observation window fixedly embedded in the front end of the drying chamber. This utility model facilitates the entry of printed materials into the drying chamber via a conveyor roller. Heat is generated by energizing the heating tubes, facilitating the drying of the printed materials. Excess heat in the drying chamber is recovered by an exhaust fan, and after filtration and secondary heating, the heat is returned to the drying chamber through an air duct for reuse. This eliminates the need to exhaust the hot air, resulting in a high heat recovery rate. When the excess hot air is recovered and enters the filter box, the filter plate filters out harmful gases, preventing environmental impact and improving convenience. A sealing gasket tightly adheres to the inner wall of the slot, improving the sealing performance of the filter box and enhancing its effectiveness.

Description

Technical Field

[0001] This utility model relates to the field of waste heat utilization technology for printing presses, and specifically to a waste heat utilization device for flexographic printing presses. Background Technology

[0002] The printing section is the core of a flexographic printing press, and its arrangement directly affects operational performance, print quality, printing speed, and the range of applications. Based on the arrangement of the printing sections, flexographic printing presses can be divided into three categories: stacked, satellite, and modular.

[0003] Flexographic printing presses use fluid inks with high fluidity. The ink is transferred to the image area of ​​the printing plate by the ink fountain roller and the anilox roller, and then the printing pressure is applied by the pressure roller to transfer the ink on the printing plate to the substrate. Finally, the printing process is completed by the drying surface.

[0004] However, a drying oven is usually required to dry the materials during the drying process.

[0005] The existing technology has the following problems:

[0006] In actual use, the existing equipment has a low utilization rate of heat energy in traditional printing press ovens. The hot air flowing out of the oven is directly discharged, which not only pollutes the air, but also wastes a lot of heat. Utility Model Content

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A waste heat recovery device for a flexographic printing press includes a base, a drying box fixedly mounted on the upper end of the base, an observation window fixedly embedded in the front end of the drying box, a recovery mechanism mounted on the upper end of the drying box, and a filter assembly mounted on one side of the recovery mechanism.

[0009] The recycling mechanism includes an exhaust fan. The lower end of the exhaust fan is fixedly connected to the upper left side of the drying chamber. A connecting pipe is fixedly installed on the left side of the exhaust fan, and a connecting duct is fixedly installed on the right side of the exhaust fan. A suction hood is fixedly installed at the top of the connecting pipe. Multiple sets of connecting rods are fixedly installed on the upper exterior of the suction hood. A heating chamber is fixedly installed on the upper right side of the drying chamber. A connecting pipe is fixedly installed on the left side of the heating chamber. A blower is fixedly installed on the right side of the heating chamber, and a blower pipe is fixedly installed on the right side of the exhaust fan.

[0010] Preferably, the top end of the connecting pipe extends to the inside left side of the drying chamber, and the top end of the connecting rod is fixedly connected to the upper left inner wall of the drying chamber.

[0011] Preferably, the top end of the air supply duct extends to the right side inside the drying box and is interconnected.

[0012] Preferably, an installation rack is fixedly connected inside the heating box, and multiple groups of electric heating wires are fixedly arranged inside the installation rack.

[0013] Preferably, the filtering component includes a filter box. The lower end of the filter box is fixedly connected to the middle part of the upper end of the drying box. The front and rear inner walls of the filter box are both fixedly connected with clamping rails. A slot is formed through the upper end surface of the filter box. A filter plate is movably inserted into the clamping rails. A fixing block is fixedly arranged at the upper end of the filter plate. A sealing gasket is fixedly glued to the outer wall of the fixing block. An end plate is fixedly connected to the upper end of the fixing block.

[0014] Preferably, the clamping rail is in a "C" shape. The outside of the filter plate is movably connected to the inside of the slot. The two ends of the filter box are respectively fixedly connected to the tops of a conduit and a second connecting pipe and are interconnected.

[0015] Preferably, the fixing block is matched with the inside of the slot and is movably connected, and the sealing gasket is fitted to the inner wall of the slot.

[0016] Preferably, a housing is fixedly installed at the upper left end of the base. Heating pipes are fixedly installed on both inner walls of the drying box. Multiple groups of equally spaced brackets are fixedly arranged at the lower end of the drying box. A conveying roller is rotatably installed inside the brackets.

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] 1. The present utility model provides a waste heat utilization device for a flexographic printing machine. Through the recovery mechanism, it is convenient for printing materials to enter the drying box through the conveying roller. After the heating pipes are powered on, heat is generated, which is convenient for drying the printed materials. However, through the exhaust fan, the excess heat in the drying box can be recovered, and the heat is filtered and reheated and then sent back into the drying box through the air supply duct for reuse, without discharging the hot air, so that the heat energy recovery utilization rate is high.

[0019] 2. The present utility model provides a waste heat utilization device for a flexographic printing machine. Through the filtering component, when the excess hot air is recovered and enters the filter box, the filter plate can be used to filter harmful gases in the hot air to prevent environmental impact and improve convenience. And the sealing gasket is tightly fitted to the inner wall of the slot, so that the sealing performance of the filter box is improved and the use effect of the filter box is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the waste heat utilization device for the flexographic printing machine of the present utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the waste heat recovery device for flexographic printing presses according to this utility model;

[0022] Figure 3 This is a schematic diagram of the recycling mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the heating box of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the filter assembly of this utility model.

[0025] In the diagram: 1. Base; 2. Drying oven; 3. Observation window; 4. Recycling mechanism; 5. Filter assembly; 6. Outer shell; 7. Heating tube; 8. Support; 9. Conveyor roller; 41. Exhaust fan; 42. Connecting pipe one; 43. Conduit; 44. Exhaust hood; 45. Connecting rod; 46. Connecting pipe two; 47. Heating box; 48. Blower; 49. Air supply duct; 410. Mounting bracket; 411. Heating wire; 51. Filter box; 52. Rail; 53. Slot; 54. Filter plate; 55. Fixing block; 56. Sealing gasket; 57. End plate. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to embodiments:

[0027] like Figures 1-5 As shown, this utility model provides a waste heat recovery device for a flexographic printing machine, including a base 1, a drying box 2 fixedly mounted on the upper end of the base 1, an observation window 3 fixedly embedded in the front end of the drying box 2, a recovery mechanism 4 mounted on the upper end of the drying box 2, and a filter assembly 5 mounted on one side of the recovery mechanism 4.

[0028] The upper left end of the base 1 is fixedly installed with the outer shell 6, the inner walls of both sides of the drying box 2 are fixedly installed with heating tubes 7, and the lower end of the drying box 2 is fixedly provided with multiple sets of equally distributed supports 8, and the inner side of the supports 8 is rotatably installed with conveyor rollers 9.

[0029] In this solution, excess heat is recycled. The absorbed heat is filtered and reheated before being returned to the drying oven 2 for easy reuse, resulting in a high rate of waste heat recovery. Meanwhile, the filter plate 54 absorbs and adsorbs harmful substances with good adsorption effect, realizing the recovery and utilization of waste heat, preventing the loss of heat energy, saving energy and protecting the environment, and reducing costs.

[0030] like Figures 3-4As shown in the figure, the recycling mechanism 4 includes an exhaust fan 41. The lower end of the exhaust fan 41 is fixedly connected to the upper left side of the drying box 2. A connecting pipe 42 is fixedly provided on the left side of the exhaust fan 41 and is connected in a communicating manner. A conduit 43 is fixedly provided on the right side of the exhaust fan 41 and is connected in a communicating manner. The top end of the connecting pipe 42 is fixedly provided with a suction hood 44 connected in a communicating manner. A plurality of connecting rods 45 are fixedly provided on the outer side of the upper end of the suction hood 44. A heating box 47 is fixedly provided on the upper right side of the drying box 2. A connecting pipe 46 is fixedly provided on the left side of the heating box 47 and is connected in a communicating manner. A blower 48 is fixedly provided on the right side of the heating box 47 and is connected in a communicating manner. A air supply pipe 49 is fixedly provided on the right side of the exhaust fan 41 and is connected in a communicating manner.

[0031] The top end of the connecting pipe 42 extends to the left side inside the drying box 2, and the top ends of the connecting rods 45 are fixedly connected to the inner wall of the upper left end of the drying box 2.

[0032] The top end of the air supply pipe 49 extends to the right side inside the drying box 2 and is connected in a communicating manner.

[0033] An installation frame 410 is fixedly connected inside the heating box 47, and a plurality of electric heating wires 411 are fixedly provided inside the installation frame 410.

[0034] In this solution, after the recycled heat enters the heating box 47, the electric heating wires 411 are powered on to work, reheating the heat to increase the temperature of the heat, ensuring that it can meet the requirements for drying the materials again.

[0035] As Figure 5 As shown in the figure, the filtering component 5 includes a filter box 51. The lower end of the filter box 51 is fixedly connected to the middle of the upper end of the drying box 2. Clamping rails 52 are fixedly connected to the front and rear inner walls of the filter box 51. A slot 53 is formed through the upper surface of the filter box 51. A filter plate 54 is movably inserted into the clamping rails 52. A fixing block 55 is fixedly provided at the upper end of the filter plate 54. A sealing gasket 56 is fixedly glued to the outer wall of the fixing block 55. An end plate 57 is fixedly connected to the upper end of the fixing block 55.

[0036] The clamping rails 52 are in a "C" shape. The outside of the filter plate 54 is movably connected to the inside of the slot 53. The two ends of the filter box 51 are respectively fixedly connected to the top ends of the conduit 43 and the connecting pipe 46 and are connected in a communicating manner.

[0037] The fixing block 55 is matched with the inside of the slot 53 and is movably connected, and the sealing gasket 56 is fitted to the inner wall of the slot 53.

[0038] In this design, the sealing gasket 56 is made of a material with high elasticity and good sealing properties. It fits tightly against the inner wall of the slot 53. When the filter plate 54 is inserted into the slot 53, the sealing gasket 56 can completely fill the tiny gap between the fixing block 55 and the slot 53, forming a tight barrier. This not only improves the overall sealing of the filter box 51 and reduces the possibility of hot air leakage, but also further enhances the filtration effect of the filter box 51 on harmful gases in the hot air, significantly improving the performance of the filter box 51. By lifting the end plate 57, the filter plate 54 can be easily pulled out from the rail 52 for cleaning, avoiding blockage.

[0039] The working principle of the waste heat recovery device for this flexographic printing press will be explained in detail below.

[0040] like Figures 1-5 As shown, when using the waste heat recovery device for this flexographic printing press, the device can first be installed in a suitable position. Then, the material can enter the drying chamber 2 through the inlet on the drying chamber 2, and then be conveyed by the conveyor roller 9. Next, the heating tube 7 is turned on. After the heating tube 7 is powered on, it generates heat to facilitate the drying of the printed material. At this time, the exhaust fan 41 can be turned on. The exhaust fan 41 can absorb the excess heat in the drying chamber 2 through the connecting pipe 42 and the suction hood 44. At the same time, the absorbed heat can be discharged into the filter box 51 through the conduit 43. The filter plate 54 in the filter box 51 can be used to remove the heat. The harmful gases are filtered and absorbed. The heat after filtering out the harmful substances enters the heating box 47 through the connecting pipe 46. At this time, the temperature of the heat drops after being transported by the exhaust fan 41 and the filter box 51. At this time, the heating wire 411 in the mounting bracket 410 can be activated. The heating wire 411 generates heat after being energized, which can then heat the cooled heat. Then, the blower 48 is turned on. The blower 48 can send the processed heat back into the drying box 2 through the air supply pipe 49, thus achieving the effect of waste heat recovery and recycling of the heat, effectively improving production efficiency.

[0041] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A waste heat recovery device for a flexographic printing press, comprising a base (1), wherein a drying chamber (2) is fixedly mounted on the upper end of the base (1), characterized in that: An observation window (3) is fixedly embedded at the front end of the drying box (2). A recovery mechanism (4) is provided at the upper end of the drying box (2), and a filtering component (5) is provided on one side of the recovery mechanism (4). The recovery mechanism (4) includes an exhaust fan (41). The lower end of the exhaust fan (41) is fixedly connected to the upper left side of the drying box (2). A first connecting pipe (42) which is connected and communicated is fixedly provided on the left side of the exhaust fan (41). A conduit (43) which is connected and communicated is fixedly provided on the right side of the exhaust fan (41). The top end of the first connecting pipe (42) is fixedly provided with an air suction hood (44) which is connected and communicated. Multiple connecting rods (45) are fixedly provided on the outer side of the upper end of the air suction hood (44). A heating box (47) is fixedly provided on the upper right side of the drying box (2). A second connecting pipe (46) which is connected and communicated is fixedly provided on the left side of the heating box (47). A blower (48) which is connected and communicated is fixedly provided on the right side of the heating box (47). An air supply pipe (49) which is connected and communicated is fixedly provided on the right side of the exhaust fan (41).

2. The waste heat recovery device for a flexographic printing press according to claim 1, characterized in that: The top end of the first connecting pipe (42) extends to the left side inside the drying box (2), and the top ends of the connecting rods (45) are fixedly connected to the inner wall of the upper left end of the drying box (2).

3. The waste heat recovery device for a flexographic printing press according to claim 1, characterized in that: The top end of the air supply pipe (49) extends to the right side inside the drying box (2) and is connected and communicated with each other.

4. The waste heat recovery device for a flexographic printing press according to claim 1, characterized in that: An installation rack (410) is fixedly connected inside the heating box (47), and multiple heating wires (411) are fixedly provided inside the installation rack (410).

5. The waste heat recovery device for a flexographic printing press according to claim 1, characterized in that: The filtering component (5) includes a filter box (51). The lower end of the filter box (51) is fixedly connected to the middle part of the upper end of the drying box (2). Clamping rails (52) are fixedly connected to the front and rear inner walls of the filter box (51). A slot (53) is formed through the upper surface of the filter box (51). A filter plate (54) is movably inserted into the clamping rails (52). A fixing block (55) is fixedly provided at the upper end of the filter plate (54). A sealing gasket (56) is fixedly glued to the outer wall of the fixing block (55). An end plate (57) is fixedly connected to the upper end of the fixing block (55).

6. The waste heat recovery device for a flexographic printing press according to claim 5, characterized in that: The clamping rail (52) is in a "C" shape. The outside of the filter plate (54) is movably connected to the inside of the slot (53). The two ends of the filter box (51) are respectively fixedly connected to the top ends of the conduit (43) and the second connecting pipe (46) and are connected and communicated with each other.

7. The waste heat recovery device for a flexographic printing press according to claim 5, characterized in that: The fixing block (55) is matched with the inside of the slot (53) and is movably connected, and the sealing gasket (56) is fitted to the inner wall of the slot (53).

8. The waste heat recovery device for a flexographic printing press according to claim 1, characterized in that: A housing (6) is fixedly installed at the upper left end of the base (1). Heating tubes (7) are fixedly installed on the inner walls of both sides of the drying box (2). Multiple brackets (8) which are evenly distributed at equal intervals are fixedly provided at the lower end of the drying box (2). A conveying roller (9) is rotatably installed inside the brackets (8).

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